del images

- Added direct pattern jump input field (Ctrl+J behavior without hotkey)

- Implemented Composite Score: 35% match, 55% excl match, 10% brightness

- Added 'Prefer darkness' toggle to invert brightness score

- Added checkmarks to 'Prefer darkness' and 'Toggle free-draw' menus

- Added dynamic Darkness/Brightness text parsing to UI and CSV export

.gitignore

@@ -156,3 +156,6 @@ uv/
 *.merge_file_*
 .git/modules/
 .git/worktrees/
+
+# ICRA specific
+images/

README.md

@@ -1,24 +1,29 @@
 <div style="display:flex; gap:16px; align-items:center;">
   <img src="app/assets/logo.png" alt="ICRA" width="140"/>
   <div>
-    <strong>Interactive Color Range Analyzer</strong> is being reimagined with a <em>PySide6</em> user interface.<br/>
+    <strong>Interactive Color Range Analyzer (ICRA)</strong><br/>
-    This branch focuses on building a native desktop shell with modern window controls before porting the colour-analysis features.
+    A fully-featured, PySide6-powered desktop application for precise color matching, image analysis, and statistics generation.
   </div>
 </div>
 
-## Current prototype
+## Features
-- Custom frameless window with minimise / maximise / close controls that hook into Windows natively
+- **High-Performance Image Processing:** Native, vectorized NumPy operations for lightning-fast HSV conversion and color matching.
-- Dark themed layout and basic image preview powered by Qt
+- **Batch Folder Processing:** Load a folder of images and instantly export an aggregated `icra_stats.csv` with localized formatting (dot or comma decimals depending on your language).
-- “Open image” workflow that displays the selected asset scaled to the viewport
+- **Eyedropper Tool:** Quickly pick target matching colors directly from the image canvas.
-
+- **Advanced Selection:** Support for exclusion zones (rectangles and free-draw polygons) overlaid on the image, all dynamically rendered via `QGraphicsView`.
-> ⚠️ Legacy Tk features (sliders, exclusions, folder navigation, stats) are not wired up yet. The goal here is to validate the PySide6 shell first.
+- **Modern UI & UX:** 
+  - Drag-and-drop support for files and folders.
+  - Custom dark and light themes with native-feeling borderless titlebars and a categorized menu bar.
+  - Window size and position persistence between launches.
+  - Keyboard shortcuts for rapid workflow.
+- **Configurable:** Uses `config.toml` to drive everything from overlay matching colors to default sliders and application language (`en`/`de`).
 
 ## Requirements
 - Python 3.11+
 - [uv](https://github.com/astral-sh/uv) for dependency management
-- Windows 10/11 recommended (PySide6 build included; Linux/macOS should work but are untested in this branch)
+- Works across Windows, macOS, and Linux (requires PySide6 and numpy)
 
-## Setup with uv (PowerShell example)
+## Setup with uv
 ```bash
 git clone https://git.lukasmahler.de/lm/ICRA.git
 cd ICRA
@@ -28,24 +33,25 @@ uv pip install .
 uv run icra
 ```
 
-The app launches directly as a PySide6 GUI—no browser or local web server involved. Use the “Open Image…” button to load a file and test resizing/snap behaviour.
+## Running the Test Suite
+The core image processing logic and UI data models are rigorously tested using `pytest`.
+```bash
+uv run pytest tests/ -v
+```
 
-## Roadmap (branch scope)
+## Project Layout
-1. Port hue/saturation/value controls to Qt widgets
-2. Re-implement exclusion drawing using QPainter overlays
-3. Integrate existing image-processing logic (`app/logic`) with the new UI
-
-## Project layout
 ```
 app/
   assets/        # Shared branding
-  gui/, logic/   # Legacy Tk code kept for reference
+  lang/          # Localization strings (TOML format)
-  qt/            # New PySide6 implementation (main_window, app bootstrap)
+  logic/         # Configuration loading and application constants
-config.toml      # Historical defaults (unused in the prototype)
+  qt/            # PySide6 implementation (main_window, custom UI widgets, vectorized image processing)
+tests/           # Pytest unit tests
+config.toml      # Configurable overlay colors, slider defaults
 main.py          # Entry point -> PySide6 launcher
 ```
 
-## Development notes
+## Development Notes
+- The legacy `Tkinter` codebase has been completely removed in favor of `PySide6`. 
 - Quick syntax check: `uv run python -m compileall app main.py`
-- Uploaded images are not persisted; the preview uses Qt pixmaps only.
+- Contributions welcome!
-- Contributions welcome—please target this branch with PySide6-specific improvements.

app/__init__.py

@@ -2,14 +2,8 @@
 
 from __future__ import annotations
 
-try:  # Legacy Tk support remains optional
-    from .app import ICRAApp, start_app as start_tk_app  # type: ignore[attr-defined]
-except Exception:  # pragma: no cover
-    ICRAApp = None  # type: ignore[assignment]
-    start_tk_app = None  # type: ignore[assignment]
-
 from .qt import create_application as create_qt_app, run as run_qt_app
 
 start_app = run_qt_app
 
-__all__ = ["ICRAApp", "start_tk_app", "create_qt_app", "run_qt_app", "start_app"]
+__all__ = ["create_qt_app", "run_qt_app", "start_app"]

app/app.py

@@ -1,176 +0,0 @@
-"""Application composition root."""
-
-from __future__ import annotations
-
-import ctypes
-import platform
-import tkinter as tk
-from importlib import resources
-
-from .gui import ColorPickerMixin, ExclusionMixin, ThemeMixin, UIBuilderMixin
-from .i18n import I18nMixin
-from .logic import DEFAULTS, LANGUAGE, RESET_EXCLUSIONS_ON_IMAGE_CHANGE, ImageProcessingMixin, ResetMixin
-
-
-class ICRAApp(
-    I18nMixin,
-    ThemeMixin,
-    UIBuilderMixin,
-    ImageProcessingMixin,
-    ExclusionMixin,
-    ColorPickerMixin,
-    ResetMixin,
-):
-    """Tkinter based application for isolating configurable colour ranges."""
-
-    def __init__(self, root: tk.Tk):
-        self.root = root
-        self.init_i18n(LANGUAGE)
-        self.root.title(self._t("app.title"))
-        self._setup_window()
-
-        # Theme and styling
-        self.init_theme()
-
-        # Tkinter state variables
-        self.DEFAULTS = DEFAULTS.copy()
-        self.hue_min = tk.DoubleVar(value=self.DEFAULTS["hue_min"])
-        self.hue_max = tk.DoubleVar(value=self.DEFAULTS["hue_max"])
-        self.sat_min = tk.DoubleVar(value=self.DEFAULTS["sat_min"])
-        self.val_min = tk.DoubleVar(value=self.DEFAULTS["val_min"])
-        self.val_max = tk.DoubleVar(value=self.DEFAULTS["val_max"])
-        self.alpha = tk.IntVar(value=self.DEFAULTS["alpha"])
-        self.ref_hue = None
-
-        # Debounce for heavy preview updates
-        self.update_delay_ms = 400
-        self._update_job = None
-
-        # Exclusion rectangles (preview coordinates)
-        self.exclude_shapes: list[dict[str, object]] = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self.exclude_mode = "rect"
-        self.reset_exclusions_on_switch = RESET_EXCLUSIONS_ON_IMAGE_CHANGE
-        self._exclude_mask = None
-        self._exclude_mask_dirty = True
-        self._exclude_mask_px = None
-        self._exclude_canvas_ids: list[int] = []
-        self._current_stroke: list[tuple[int, int]] | None = None
-        self.free_draw_width = 14
-        self.pick_mode = False
-
-        # Image references
-        self.image_path = None
-        self.orig_img = None
-        self.preview_img = None
-        self.preview_tk = None
-        self.overlay_tk = None
-        self.image_paths = []
-        self.current_image_index = -1
-
-        # Build UI
-        self.setup_ui()
-        self._init_copy_menu()
-        self.bring_to_front()
-
-    def _setup_window(self) -> None:
-        screen_width = self.root.winfo_screenwidth()
-        screen_height = self.root.winfo_screenheight()
-        default_width = int(screen_width * 0.8)
-        default_height = int(screen_height * 0.8)
-        default_x = (screen_width - default_width) // 2
-        default_y = (screen_height - default_height) // 4
-        self._window_geometry = f"{default_width}x{default_height}+{default_x}+{default_y}"
-        self._is_maximized = True
-        self._use_overrideredirect = True
-        self.root.geometry(f"{screen_width}x{screen_height}+0+0")
-        self.root.configure(bg="#f2f2f7")
-        try:
-            self.root.overrideredirect(True)
-        except Exception:
-            try:
-                self.root.attributes("-type", "splash")
-            except Exception:
-                pass
-        self._window_icon_ref = None
-        self._apply_window_icon()
-        self._init_window_chrome()
-
-    def _ensure_taskbar_entry(self) -> None:
-        """Force the borderless window to show up in the Windows taskbar."""
-        try:
-            if platform.system() != "Windows":
-                return
-            hwnd = self.root.winfo_id()
-            if not hwnd:
-                self.root.after(50, self._ensure_taskbar_entry)
-                return
-
-            GWL_EXSTYLE = -20
-            WS_EX_TOOLWINDOW = 0x00000080
-            WS_EX_APPWINDOW = 0x00040000
-            SWP_NOSIZE = 0x0001
-            SWP_NOMOVE = 0x0002
-            SWP_NOZORDER = 0x0004
-            SWP_FRAMECHANGED = 0x0020
-
-            user32 = ctypes.windll.user32  # type: ignore[attr-defined]
-            shell32 = ctypes.windll.shell32  # type: ignore[attr-defined]
-
-            style = user32.GetWindowLongW(hwnd, GWL_EXSTYLE)
-            new_style = (style & ~WS_EX_TOOLWINDOW) | WS_EX_APPWINDOW
-            if new_style != style:
-                user32.SetWindowLongW(hwnd, GWL_EXSTYLE, new_style)
-                user32.SetWindowPos(
-                    hwnd,
-                    0,
-                    0,
-                    0,
-                    0,
-                    0,
-                    SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED,
-                )
-
-            app_id = ctypes.c_wchar_p("ICRA.App")
-            shell32.SetCurrentProcessExplicitAppUserModelID(app_id)
-        except Exception:
-            pass
-
-    def _apply_window_icon(self) -> None:
-        try:
-            icon_resource = resources.files("app.assets").joinpath("logo.png")
-            with resources.as_file(icon_resource) as icon_path:
-                icon = tk.PhotoImage(file=str(icon_path))
-            self.root.iconphoto(False, icon)
-            self._window_icon_ref = icon
-        except Exception:
-            self._window_icon_ref = None
-
-    def _init_window_chrome(self) -> None:
-        """Configure a borderless window while retaining a taskbar entry."""
-        try:
-            self.root.bind("<Map>", self._restore_borderless)
-            self.root.after(0, self._restore_borderless)
-            self.root.after(0, self._ensure_taskbar_entry)
-        except Exception:
-            pass
-
-    def _restore_borderless(self, _event=None) -> None:
-        try:
-            if self._use_overrideredirect:
-                self.root.overrideredirect(True)
-            self._ensure_taskbar_entry()
-        except Exception:
-            pass
-
-
-def start_app() -> None:
-    """Entry point used by the CLI script."""
-    root = tk.Tk()
-    app = ICRAApp(root)
-    root.mainloop()
-
-
-__all__ = ["ICRAApp", "start_app"]

app/gui/__init__.py

@@ -1,13 +0,0 @@
-"""GUI-related mixins and helpers for the application."""
-
-from .color_picker import ColorPickerMixin
-from .exclusions import ExclusionMixin
-from .theme import ThemeMixin
-from .ui import UIBuilderMixin
-
-__all__ = [
-    "ColorPickerMixin",
-    "ExclusionMixin",
-    "ThemeMixin",
-    "UIBuilderMixin",
-]

app/gui/color_picker.py

@@ -1,158 +0,0 @@
-"""Color selection utilities."""
-
-from __future__ import annotations
-
-import colorsys
-
-from tkinter import colorchooser, messagebox
-
-
-class ColorPickerMixin:
-    """Handles colour selection from dialogs and mouse clicks."""
-
-    ref_hue: float | None
-    hue_span: float = 45.0  # degrees around the picked hue
-    selected_colour: tuple[int, int, int] | None = None
-
-    def choose_color(self):
-        title = self._t("dialog.choose_colour_title") if hasattr(self, "_t") else "Choose colour"
-        rgb, hex_colour = colorchooser.askcolor(title=title)
-        if rgb is None:
-            return
-        r, g, b = (int(round(channel)) for channel in rgb)
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(r, g, b)
-        label = hex_colour or f"RGB({r}, {g}, {b})"
-        message = self._t(
-            "status.color_selected",
-            label=label,
-            hue=hue_deg,
-            saturation=sat_pct,
-            value=val_pct,
-        )
-        self.status.config(text=message)
-        self._update_selected_colour(r, g, b)
-
-    def apply_sample_colour(self, hex_colour: str, name: str | None = None) -> None:
-        """Apply a predefined colour preset."""
-        rgb = self._parse_hex_colour(hex_colour)
-        if rgb is None:
-            return
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(*rgb)
-        if self.pick_mode:
-            self.pick_mode = False
-        label = name or hex_colour.upper()
-        message = self._t(
-            "status.sample_colour",
-            label=label,
-            hex_code=hex_colour,
-            hue=hue_deg,
-            saturation=sat_pct,
-            value=val_pct,
-        )
-        self.status.config(text=message)
-        self._update_selected_colour(*rgb)
-
-    def enable_pick_mode(self):
-        if self.preview_img is None:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.load_image_first"),
-            )
-            return
-        self.pick_mode = True
-        self.status.config(text=self._t("status.pick_mode_ready"))
-
-    def disable_pick_mode(self, event=None):
-        if self.pick_mode:
-            self.pick_mode = False
-            self.status.config(text=self._t("status.pick_mode_ended"))
-
-    def on_canvas_click(self, event):
-        if not self.pick_mode or self.preview_img is None:
-            return
-        x = int(event.x)
-        y = int(event.y)
-        if x < 0 or y < 0 or x >= self.preview_img.width or y >= self.preview_img.height:
-            return
-        r, g, b, a = self.preview_img.getpixel((x, y))
-        if a == 0:
-            return
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(r, g, b)
-        self.disable_pick_mode()
-        self.status.config(
-            text=self._t(
-                "status.pick_mode_from_image",
-                hue=hue_deg,
-                saturation=sat_pct,
-                value=val_pct,
-            )
-        )
-        self._update_selected_colour(r, g, b)
-
-    def _apply_rgb_selection(self, r: int, g: int, b: int) -> tuple[float, float, float]:
-        """Update slider ranges based on an RGB colour and return HSV summary."""
-        h, s, v = colorsys.rgb_to_hsv(r / 255.0, g / 255.0, b / 255.0)
-        hue_deg = (h * 360.0) % 360.0
-        self.ref_hue = hue_deg
-        self._set_slider_targets(hue_deg, s, v)
-        self.update_preview()
-        return hue_deg, s * 100.0, v * 100.0
-
-    def _update_selected_colour(self, r: int, g: int, b: int) -> None:
-        self.selected_colour = (r, g, b)
-        hex_colour = f"#{r:02x}{g:02x}{b:02x}"
-        if hasattr(self, "current_colour_sw"):
-            try:
-                self.current_colour_sw.configure(background=hex_colour)
-            except Exception:
-                pass
-        if hasattr(self, "current_colour_label"):
-            try:
-                self.current_colour_label.configure(text=f"({hex_colour})")
-            except Exception:
-                pass
-
-    def _set_slider_targets(self, hue_deg: float, saturation: float, value: float) -> None:
-        span = getattr(self, "hue_span", 45.0)
-        self.hue_min.set((hue_deg - span) % 360)
-        self.hue_max.set((hue_deg + span) % 360)
-
-        sat_pct = saturation * 100.0
-        sat_margin = 35.0
-        sat_min = max(0.0, min(100.0, sat_pct - sat_margin))
-        if saturation <= 0.05:
-            sat_min = 0.0
-        self.sat_min.set(sat_min)
-
-        v_pct = value * 100.0
-        val_margin = 35.0
-        val_min = max(0.0, v_pct - val_margin)
-        val_max = min(100.0, v_pct + val_margin)
-        if value <= 0.15:
-            val_max = min(45.0, max(val_max, 25.0))
-        if value >= 0.85:
-            val_min = max(55.0, min(val_min, 80.0))
-        if val_max <= val_min:
-            val_max = min(100.0, val_min + 10.0)
-        self.val_min.set(val_min)
-        self.val_max.set(val_max)
-
-    @staticmethod
-    def _parse_hex_colour(hex_colour: str | None) -> tuple[int, int, int] | None:
-        if not hex_colour:
-            return None
-        value = hex_colour.strip().lstrip("#")
-        if len(value) == 3:
-            value = "".join(ch * 2 for ch in value)
-        if len(value) != 6:
-            return None
-        try:
-            r = int(value[0:2], 16)
-            g = int(value[2:4], 16)
-            b = int(value[4:6], 16)
-        except ValueError:
-            return None
-        return r, g, b
-
-
-__all__ = ["ColorPickerMixin"]

app/gui/exclusions.py

@@ -1,207 +0,0 @@
-"""Mouse handlers for exclusion shapes."""
-
-from __future__ import annotations
-
-
-class ExclusionMixin:
-    """Manage exclusion shapes (rectangles and freehand strokes) on the preview canvas."""
-
-    def _exclude_start(self, event):
-        if self.preview_img is None:
-            return
-        mode = getattr(self, "exclude_mode", "rect")
-        x = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y = max(0, min(self.preview_img.height - 1, int(event.y)))
-        if mode == "free":
-            self._current_stroke = [(x, y)]
-            preview_id = getattr(self, "_stroke_preview_id", None)
-            if preview_id:
-                try:
-                    self.canvas_orig.delete(preview_id)
-                except Exception:
-                    pass
-            accent = self._exclusion_preview_colour()
-            self._stroke_preview_id = self.canvas_orig.create_line(
-                x,
-                y,
-                x,
-                y,
-                fill=accent,
-                width=2,
-                smooth=True,
-                capstyle="round",
-                joinstyle="round",
-            )
-            self._rubber_start = None
-            return
-        self._rubber_start = (x, y)
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-        accent = self._exclusion_preview_colour()
-        self._rubber_id = self.canvas_orig.create_rectangle(x, y, x, y, outline=accent, width=2)
-
-    def _exclude_drag(self, event):
-        mode = getattr(self, "exclude_mode", "rect")
-        if mode == "free":
-            stroke = getattr(self, "_current_stroke", None)
-            if not stroke:
-                return
-            x = max(0, min(self.preview_img.width - 1, int(event.x)))
-            y = max(0, min(self.preview_img.height - 1, int(event.y)))
-            if stroke[-1] != (x, y):
-                stroke.append((x, y))
-                preview_id = getattr(self, "_stroke_preview_id", None)
-                if preview_id:
-                    coords = [coord for point in stroke for coord in point]
-                    self.canvas_orig.coords(preview_id, *coords)
-            return
-        if not self._rubber_start:
-            return
-        x0, y0 = self._rubber_start
-        x1 = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y1 = max(0, min(self.preview_img.height - 1, int(event.y)))
-        self.canvas_orig.coords(self._rubber_id, x0, y0, x1, y1)
-
-    def _exclude_end(self, event):
-        mode = getattr(self, "exclude_mode", "rect")
-        if mode == "free":
-            stroke = getattr(self, "_current_stroke", None)
-            if stroke and len(stroke) > 2:
-                polygon = self._close_polygon(self._compress_stroke(stroke))
-                if len(polygon) >= 3:
-                    shape = {
-                        "kind": "polygon",
-                        "points": polygon,
-                    }
-                    self.exclude_shapes.append(shape)
-                    stamper = getattr(self, "_stamp_shape_on_mask", None)
-                    if callable(stamper):
-                        stamper(shape)
-                    else:
-                        self._exclude_mask_dirty = True
-            self._current_stroke = None
-            preview_id = getattr(self, "_stroke_preview_id", None)
-            if preview_id:
-                try:
-                    self.canvas_orig.delete(preview_id)
-                except Exception:
-                    pass
-            self._stroke_preview_id = None
-            self.update_preview()
-            return
-        if not self._rubber_start:
-            return
-        x0, y0 = self._rubber_start
-        x1 = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y1 = max(0, min(self.preview_img.height - 1, int(event.y)))
-        rx0, rx1 = sorted((x0, x1))
-        ry0, ry1 = sorted((y0, y1))
-        if (rx1 - rx0) > 0 and (ry1 - ry0) > 0:
-            shape = {"kind": "rect", "coords": (rx0, ry0, rx1, ry1)}
-            self.exclude_shapes.append(shape)
-            stamper = getattr(self, "_stamp_shape_on_mask", None)
-            if callable(stamper):
-                stamper(shape)
-            else:
-                self._exclude_mask_dirty = True
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-        self._rubber_start = None
-        self._rubber_id = None
-        self.update_preview()
-
-    def clear_excludes(self):
-        self.exclude_shapes = []
-        self._rubber_start = None
-        self._current_stroke = None
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-            self._rubber_id = None
-        if self._stroke_preview_id:
-            try:
-                self.canvas_orig.delete(self._stroke_preview_id)
-            except Exception:
-                pass
-            self._stroke_preview_id = None
-        for item in getattr(self, "_exclude_canvas_ids", []):
-            try:
-                self.canvas_orig.delete(item)
-            except Exception:
-                pass
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.update_preview()
-
-    def undo_exclude(self):
-        if not getattr(self, "exclude_shapes", None):
-            return
-        self.exclude_shapes.pop()
-        self._exclude_mask_dirty = True
-        self.update_preview()
-
-    def toggle_exclusion_mode(self):
-        current = getattr(self, "exclude_mode", "rect")
-        next_mode = "free" if current == "rect" else "rect"
-        self.exclude_mode = next_mode
-        self._current_stroke = None
-        if next_mode == "free":
-            if self._rubber_id:
-                try:
-                    self.canvas_orig.delete(self._rubber_id)
-                except Exception:
-                    pass
-                self._rubber_id = None
-            self._rubber_start = None
-        else:
-            if self._stroke_preview_id:
-                try:
-                    self.canvas_orig.delete(self._stroke_preview_id)
-                except Exception:
-                    pass
-                self._stroke_preview_id = None
-            self._rubber_id = None
-        message_key = "status.free_draw_enabled" if next_mode == "free" else "status.free_draw_disabled"
-        if hasattr(self, "status"):
-            try:
-                self.status.config(text=self._t(message_key))
-            except Exception:
-                pass
-
-    @staticmethod
-    def _compress_stroke(points: list[tuple[int, int]]) -> list[tuple[int, int]]:
-        """Reduce duplicate points without altering the drawn path too much."""
-        if not points:
-            return []
-        compressed: list[tuple[int, int]] = [points[0]]
-        for point in points[1:]:
-            if point != compressed[-1]:
-                compressed.append(point)
-        return compressed
-
-    def _exclusion_preview_colour(self) -> str:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        return "#ffd700" if is_dark else "#c56217"
-
-    @staticmethod
-    def _close_polygon(points: list[tuple[int, int]]) -> list[tuple[int, int]]:
-        """Ensure the polygon is closed by repeating the start if necessary."""
-        if len(points) < 3:
-            return points
-        closed = list(points)
-        if closed[0] != closed[-1]:
-            closed.append(closed[0])
-        return closed
-
-
-__all__ = ["ExclusionMixin"]

app/gui/theme.py

@@ -1,106 +0,0 @@
-"""Theme and window helpers."""
-
-from __future__ import annotations
-
-import platform
-from tkinter import ttk
-
-try:
-    import winreg
-except Exception:  # pragma: no cover - platform-specific
-    winreg = None  # type: ignore
-
-
-class ThemeMixin:
-    """Provides theme handling utilities for the main application."""
-
-    theme: str
-    style: ttk.Style
-    scale_style: str
-
-    def init_theme(self) -> None:
-        """Initialise ttk style handling and apply the detected theme."""
-        self.style = ttk.Style()
-        self.style.theme_use("clam")
-
-        self.theme = "light"
-        self.apply_theme(self.detect_system_theme())
-
-    def apply_theme(self, mode: str) -> None:
-        """Apply light/dark theme including widget palette."""
-        mode = (mode or "light").lower()
-        self.theme = "dark" if mode == "dark" else "light"
-
-        self.scale_style = "Horizontal.TScale"
-
-        if self.theme == "dark":
-            bg, fg = "#0f0f10", "#f1f1f1"
-            status_fg = "#f5f5f5"
-            highlight_fg = "#f2c744"
-        else:
-            bg, fg = "#ffffff", "#202020"
-            status_fg = "#1c1c1c"
-            highlight_fg = "#c56217"
-        self.root.configure(bg=bg)  # type: ignore[attr-defined]
-
-        s = self.style
-        s.configure("TFrame", background=bg)
-        s.configure("TLabel", background=bg, foreground=fg, font=("Segoe UI", 10))
-        s.configure(
-            "TButton", padding=8, relief="flat", background="#e0e0e0", foreground=fg, font=("Segoe UI", 10)
-        )
-        s.map("TButton", background=[("active", "#d0d0d0")])
-
-        button_refresher = getattr(self, "_refresh_toolbar_buttons_theme", None)
-        if callable(button_refresher):
-            button_refresher()
-
-        nav_refresher = getattr(self, "_refresh_navigation_buttons_theme", None)
-        if callable(nav_refresher):
-            nav_refresher()
-
-        status_refresher = getattr(self, "_refresh_status_palette", None)
-        if callable(status_refresher) and hasattr(self, "status"):
-            status_refresher(status_fg)
-
-        accent_refresher = getattr(self, "_refresh_accent_labels", None)
-        if callable(accent_refresher) and hasattr(self, "filename_label"):
-            accent_refresher(highlight_fg)
-
-        canvas_refresher = getattr(self, "_refresh_canvas_backgrounds", None)
-        if callable(canvas_refresher):
-            canvas_refresher()
-
-    def detect_system_theme(self) -> str:
-        """Best-effort detection of the OS theme preference."""
-        try:
-            if platform.system() == "Windows" and winreg is not None:
-                key = winreg.OpenKey(
-                    winreg.HKEY_CURRENT_USER,
-                    r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize",
-                )
-                value, _ = winreg.QueryValueEx(key, "AppsUseLightTheme")
-                return "light" if int(value) == 1 else "dark"
-        except Exception:
-            pass
-        return "light"
-
-    def bring_to_front(self) -> None:
-        """Try to focus the window and raise it to the foreground."""
-        try:
-            self.root.lift()
-            self.root.focus_force()
-            self.root.attributes("-topmost", True)
-            self.root.update()
-            self.root.attributes("-topmost", False)
-        except Exception:
-            pass
-
-    def toggle_theme(self) -> None:
-        """Toggle between light and dark themes."""
-        next_mode = "dark" if self.theme == "light" else "light"
-        self.apply_theme(next_mode)
-        self.update_preview()  # type: ignore[attr-defined]
-
-
-__all__ = ["ThemeMixin"]

app/gui/ui.py

@@ -1,731 +0,0 @@
-"""UI helpers and reusable Tk callbacks."""
-
-from __future__ import annotations
-
-import colorsys
-import tkinter as tk
-import tkinter.font as tkfont
-from tkinter import ttk
-
-
-class UIBuilderMixin:
-    """Constructs the Tkinter UI and common widgets."""
-
-    def setup_ui(self) -> None:
-        self._create_titlebar()
-
-        toolbar = ttk.Frame(self.root)
-        toolbar.pack(fill=tk.X, padx=12, pady=(4, 2))
-        buttons = [
-            ("🖼", self._t("toolbar.open_image"), self.load_image),
-            ("📂", self._t("toolbar.open_folder"), self.load_folder),
-            ("🎨", self._t("toolbar.choose_color"), self.choose_color),
-            ("🖱", self._t("toolbar.pick_from_image"), self.enable_pick_mode),
-            ("💾", self._t("toolbar.save_overlay"), self.save_overlay),
-            ("△", self._t("toolbar.toggle_free_draw"), self.toggle_exclusion_mode),
-            ("🧹", self._t("toolbar.clear_excludes"), self.clear_excludes),
-            ("↩", self._t("toolbar.undo_exclude"), self.undo_exclude),
-            ("🔄", self._t("toolbar.reset_sliders"), self.reset_sliders),
-            ("🌓", self._t("toolbar.toggle_theme"), self.toggle_theme),
-        ]
-        self._toolbar_buttons: list[dict[str, object]] = []
-        self._nav_buttons: list[tk.Button] = []
-
-        buttons_frame = ttk.Frame(toolbar)
-        buttons_frame.pack(side=tk.LEFT)
-        for icon, label, command in buttons:
-            self._add_toolbar_button(buttons_frame, icon, label, command)
-
-        status_container = ttk.Frame(toolbar)
-        status_container.pack(side=tk.RIGHT, expand=True, fill=tk.X)
-        self.status = ttk.Label(
-            status_container,
-            text=self._t("status.no_file"),
-            anchor="e",
-            foreground="#efefef",
-        )
-        self.status.pack(fill=tk.X)
-        self._attach_copy_menu(self.status)
-        self.status_default_text = self.status.cget("text")
-        self._status_palette = {"fg": self.status.cget("foreground")}
-
-        palette_frame = ttk.Frame(self.root)
-        palette_frame.pack(fill=tk.X, padx=12, pady=(6, 8))
-        default_colour = self._default_colour_hex()
-
-        current_frame = ttk.Frame(palette_frame)
-        current_frame.pack(side=tk.LEFT, padx=(0, 16))
-        ttk.Label(current_frame, text=self._t("palette.current")).pack(side=tk.LEFT, padx=(0, 6))
-        self.current_colour_sw = tk.Canvas(
-            current_frame,
-            width=24,
-            height=24,
-            highlightthickness=0,
-            background=default_colour,
-            bd=0,
-        )
-        self.current_colour_sw.pack(side=tk.LEFT, pady=2)
-        self.current_colour_label = ttk.Label(current_frame, text=f"({default_colour})")
-        self.current_colour_label.pack(side=tk.LEFT, padx=(6, 0))
-
-        ttk.Label(palette_frame, text=self._t("palette.more")).pack(side=tk.LEFT, padx=(0, 8))
-        swatch_container = ttk.Frame(palette_frame)
-        swatch_container.pack(side=tk.LEFT)
-        for name, hex_code in self._preset_colours():
-            self._add_palette_swatch(swatch_container, name, hex_code)
-
-        sliders_frame = ttk.Frame(self.root)
-        sliders_frame.pack(fill=tk.X, padx=12, pady=4)
-        sliders = [
-            (self._t("sliders.hue_min"), self.hue_min, 0, 360),
-            (self._t("sliders.hue_max"), self.hue_max, 0, 360),
-            (self._t("sliders.sat_min"), self.sat_min, 0, 100),
-            (self._t("sliders.val_min"), self.val_min, 0, 100),
-            (self._t("sliders.val_max"), self.val_max, 0, 100),
-            (self._t("sliders.alpha"), self.alpha, 0, 255),
-        ]
-        for index, (label, variable, minimum, maximum) in enumerate(sliders):
-            self.add_slider_with_value(sliders_frame, label, variable, minimum, maximum, column=index)
-            sliders_frame.grid_columnconfigure(index, weight=1)
-
-        main = ttk.Frame(self.root)
-        main.pack(fill=tk.BOTH, expand=True, padx=12, pady=12)
-
-        left_column = ttk.Frame(main)
-        left_column.pack(side=tk.LEFT, fill=tk.BOTH, expand=True, padx=(0, 6))
-        left_column.grid_columnconfigure(1, weight=1)
-        left_column.grid_rowconfigure(0, weight=1)
-
-        self._create_navigation_button(left_column, "◀", self.show_previous_image, column=0)
-
-        self.canvas_orig = tk.Canvas(
-            left_column,
-            bg=self._canvas_background_colour(),
-            highlightthickness=0,
-            relief="flat",
-        )
-        self.canvas_orig.grid(row=0, column=1, sticky="nsew")
-        self.canvas_orig.bind("<Button-1>", self.on_canvas_click)
-        self.canvas_orig.bind("<ButtonPress-3>", self._exclude_start)
-        self.canvas_orig.bind("<B3-Motion>", self._exclude_drag)
-        self.canvas_orig.bind("<ButtonRelease-3>", self._exclude_end)
-
-        right_column = ttk.Frame(main)
-        right_column.pack(side=tk.RIGHT, fill=tk.BOTH, expand=True, padx=(6, 0))
-        right_column.grid_columnconfigure(0, weight=1)
-        right_column.grid_rowconfigure(0, weight=1)
-
-        self.canvas_overlay = tk.Canvas(
-            right_column,
-            bg=self._canvas_background_colour(),
-            highlightthickness=0,
-            relief="flat",
-        )
-        self.canvas_overlay.grid(row=0, column=0, sticky="nsew")
-        self._create_navigation_button(right_column, "▶", self.show_next_image, column=1)
-
-
-        info_frame = ttk.Frame(self.root)
-        info_frame.pack(fill=tk.X, padx=12, pady=(0, 12))
-        self.filename_label = ttk.Label(
-            info_frame,
-            text="—",
-            font=("Segoe UI", 10, "bold"),
-            anchor="center",
-            justify="center",
-        )
-        self.filename_label.pack(anchor="center")
-        self._attach_copy_menu(self.filename_label)
-
-        self.ratio_label = ttk.Label(
-            info_frame,
-            text=self._t("stats.placeholder"),
-            font=("Segoe UI", 10, "bold"),
-            anchor="center",
-            justify="center",
-        )
-        self.ratio_label.pack(anchor="center", pady=(4, 0))
-        self._attach_copy_menu(self.ratio_label)
-
-        self.root.bind("<Escape>", self.disable_pick_mode)
-        self.root.bind("<ButtonPress-1>", self._maybe_focus_window)
-
-    def add_slider_with_value(self, parent, text, var, minimum, maximum, column=0):
-        cell = ttk.Frame(parent)
-        cell.grid(row=0, column=column, sticky="we", padx=6)
-        header = ttk.Frame(cell)
-        header.pack(fill="x")
-        name_lbl = ttk.Label(header, text=text)
-        name_lbl.pack(side="left")
-        self._attach_copy_menu(name_lbl)
-        val_lbl = ttk.Label(header, text=f"{float(var.get()):.0f}")
-        val_lbl.pack(side="right")
-        self._attach_copy_menu(val_lbl)
-        style_name = getattr(self, "scale_style", "Horizontal.TScale")
-        ttk.Scale(
-            cell,
-            from_=minimum,
-            to=maximum,
-            orient="horizontal",
-            variable=var,
-            style=style_name,
-            command=self.on_slider_change,
-        ).pack(fill="x", pady=(2, 8))
-
-        def on_var_change(*_):
-            val_lbl.config(text=f"{float(var.get()):.0f}")
-
-        try:
-            var.trace_add("write", on_var_change)
-        except Exception:
-            var.trace("w", lambda *_: on_var_change())  # type: ignore[attr-defined]
-
-    def on_slider_change(self, *_):
-        if self._update_job is not None:
-            try:
-                self.root.after_cancel(self._update_job)
-            except Exception:
-                pass
-        self._update_job = self.root.after(self.update_delay_ms, self.update_preview)
-
-    def _preset_colours(self):
-        return [
-            (self._t("palette.swatch.red"), "#ff3b30"),
-            (self._t("palette.swatch.orange"), "#ff9500"),
-            (self._t("palette.swatch.yellow"), "#ffd60a"),
-            (self._t("palette.swatch.green"), "#34c759"),
-            (self._t("palette.swatch.teal"), "#5ac8fa"),
-            (self._t("palette.swatch.blue"), "#0a84ff"),
-            (self._t("palette.swatch.violet"), "#af52de"),
-            (self._t("palette.swatch.magenta"), "#ff2d55"),
-            (self._t("palette.swatch.white"), "#ffffff"),
-            (self._t("palette.swatch.grey"), "#8e8e93"),
-            (self._t("palette.swatch.black"), "#000000"),
-        ]
-
-    def _add_palette_swatch(self, parent, name: str, hex_code: str) -> None:
-        swatch = tk.Canvas(
-            parent,
-            width=24,
-            height=24,
-            highlightthickness=0,
-            background=hex_code,
-            bd=0,
-            relief="flat",
-            takefocus=1,
-            cursor="hand2",
-        )
-        swatch.pack(side=tk.LEFT, padx=4, pady=2)
-
-        def trigger(_event=None, colour=hex_code, label=name):
-            self.apply_sample_colour(colour, label)
-
-        swatch.bind("<Button-1>", trigger)
-        swatch.bind("<space>", trigger)
-        swatch.bind("<Return>", trigger)
-        swatch.bind("<Enter>", lambda _e: swatch.configure(cursor="hand2"))
-        swatch.bind("<Leave>", lambda _e: swatch.configure(cursor="arrow"))
-
-    def _add_toolbar_button(self, parent, icon: str, label: str, command) -> None:
-        font = tkfont.Font(root=self.root, family="Segoe UI", size=9)
-        padding_x = 12
-        gap = font.measure("  ")
-        icon_width = font.measure(icon) or font.measure("  ")
-        label_width = font.measure(label)
-        width = padding_x * 2 + icon_width + gap + label_width
-        height = 28
-        radius = 9
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else "#f2f2f7"
-        canvas = tk.Canvas(
-            parent,
-            width=width,
-            height=height,
-            bd=0,
-            highlightthickness=0,
-            bg=bg,
-            relief="flat",
-            cursor="hand2",
-            takefocus=1,
-        )
-        canvas.pack(side=tk.LEFT, padx=4, pady=1)
-
-        palette = self._toolbar_palette()
-        rect_id = self._create_round_rect(
-            canvas,
-            1,
-            1,
-            width - 1,
-            height - 1,
-            radius,
-            fill=palette["normal"],
-            outline=palette["outline"],
-            width=1,
-        )
-        icon_id = canvas.create_text(
-            padding_x,
-            height / 2,
-            text=icon,
-            font=font,
-            fill=palette["text"],
-            anchor="w",
-        )
-        label_id = canvas.create_text(
-            padding_x + icon_width + gap,
-            height / 2,
-            text=label,
-            font=font,
-            fill=palette["text"],
-            anchor="w",
-        )
-
-        button_data = {
-            "canvas": canvas,
-            "rect": rect_id,
-            "text_ids": (icon_id, label_id),
-            "command": command,
-            "palette": palette.copy(),
-            "dimensions": (width, height, radius),
-        }
-        self._toolbar_buttons.append(button_data)
-
-        def set_fill(state: str) -> None:
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, fill=pal[state])  # type: ignore[index]
-
-        def execute():
-            command()
-
-        def on_press(_event=None):
-            set_fill("active")
-
-        def on_release(event=None):
-            if event is not None and (
-                event.x < 0 or event.y < 0 or event.x > width or event.y > height
-            ):
-                set_fill("normal")
-                return
-            set_fill("hover")
-            self.root.after_idle(execute)
-
-        def on_enter(_event):
-            set_fill("hover")
-
-        def on_leave(_event):
-            set_fill("normal")
-
-        def on_focus_in(_event):
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, outline=pal["outline_focus"])  # type: ignore[index]
-
-        def on_focus_out(_event):
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, outline=pal["outline"])  # type: ignore[index]
-
-        def invoke_keyboard(_event=None):
-            set_fill("active")
-            canvas.after(120, lambda: set_fill("hover"))
-            self.root.after_idle(execute)
-
-        canvas.bind("<ButtonPress-1>", on_press)
-        canvas.bind("<ButtonRelease-1>", on_release)
-        canvas.bind("<Enter>", on_enter)
-        canvas.bind("<Leave>", on_leave)
-        canvas.bind("<FocusIn>", on_focus_in)
-        canvas.bind("<FocusOut>", on_focus_out)
-        canvas.bind("<space>", invoke_keyboard)
-        canvas.bind("<Return>", invoke_keyboard)
-
-    @staticmethod
-    def _create_round_rect(canvas: tk.Canvas, x1, y1, x2, y2, radius, **kwargs):
-        points = [
-            x1 + radius,
-            y1,
-            x2 - radius,
-            y1,
-            x2,
-            y1,
-            x2,
-            y1 + radius,
-            x2,
-            y2 - radius,
-            x2,
-            y2,
-            x2 - radius,
-            y2,
-            x1 + radius,
-            y2,
-            x1,
-            y2,
-            x1,
-            y2 - radius,
-            x1,
-            y1 + radius,
-            x1,
-            y1,
-        ]
-        return canvas.create_polygon(points, smooth=True, splinesteps=24, **kwargs)
-
-    def _create_navigation_button(self, container, symbol: str, command, *, column: int) -> None:
-        palette = self._navigation_palette()
-        bg = palette["bg"]
-        fg = palette["fg"]
-        container.grid_rowconfigure(0, weight=1)
-        btn = tk.Button(
-            container,
-            text=symbol,
-            command=command,
-            font=("Segoe UI", 26, "bold"),
-            relief="flat",
-            borderwidth=0,
-            background=bg,
-            activebackground=bg,
-            highlightthickness=0,
-            fg=fg,
-            activeforeground=fg,
-            cursor="hand2",
-            width=2,
-        )
-        btn.grid(row=0, column=column, sticky="ns", padx=6)
-        self._nav_buttons.append(btn)
-
-    def _create_titlebar(self) -> None:
-        bar_bg = "#1f1f1f"
-        title_bar = tk.Frame(self.root, bg=bar_bg, relief="flat", height=34)
-        title_bar.pack(fill=tk.X, side=tk.TOP)
-        title_bar.pack_propagate(False)
-
-        logo = None
-        try:
-            from PIL import Image, ImageTk  # type: ignore
-            from importlib import resources
-
-            logo_resource = resources.files("app.assets").joinpath("logo.png")
-            with resources.as_file(logo_resource) as logo_path:
-                image = Image.open(logo_path).convert("RGBA")
-                image.thumbnail((26, 26))
-                logo = ImageTk.PhotoImage(image)
-        except Exception:
-            logo = None
-
-        if logo is not None:
-            logo_label = tk.Label(title_bar, image=logo, bg=bar_bg)
-            logo_label.image = logo  # keep reference
-            logo_label.pack(side=tk.LEFT, padx=(10, 6), pady=4)
-
-        title_label = tk.Label(
-            title_bar,
-            text=self._t("app.title"),
-            bg=bar_bg,
-            fg="#f5f5f5",
-            font=("Segoe UI", 11, "bold"),
-            anchor="w",
-        )
-        title_label.pack(side=tk.LEFT, padx=6)
-
-        btn_kwargs = {
-            "bg": bar_bg,
-            "fg": "#f5f5f5",
-            "activebackground": "#3a3a40",
-            "activeforeground": "#ffffff",
-            "borderwidth": 0,
-            "highlightthickness": 0,
-            "relief": "flat",
-            "font": ("Segoe UI", 10, "bold"),
-            "cursor": "hand2",
-            "width": 3,
-        }
-
-        close_btn = tk.Button(title_bar, text="✕", command=self._close_app, **btn_kwargs)
-        close_btn.pack(side=tk.RIGHT, padx=6, pady=4)
-        close_btn.bind("<Enter>", lambda _e: close_btn.configure(bg="#cf212f"))
-        close_btn.bind("<Leave>", lambda _e: close_btn.configure(bg=bar_bg))
-
-        max_btn = tk.Button(title_bar, text="❐", command=self._toggle_maximize_window, **btn_kwargs)
-        max_btn.pack(side=tk.RIGHT, padx=0, pady=4)
-        max_btn.bind("<Enter>", lambda _e: max_btn.configure(bg="#2c2c32"))
-        max_btn.bind("<Leave>", lambda _e: max_btn.configure(bg=bar_bg))
-        self._max_button = max_btn
-
-        min_btn = tk.Button(title_bar, text="—", command=self._minimize_window, **btn_kwargs)
-        min_btn.pack(side=tk.RIGHT, padx=0, pady=4)
-        min_btn.bind("<Enter>", lambda _e: min_btn.configure(bg="#2c2c32"))
-        min_btn.bind("<Leave>", lambda _e: min_btn.configure(bg=bar_bg))
-
-        for widget in (title_bar, title_label):
-            widget.bind("<ButtonPress-1>", self._start_window_drag)
-            widget.bind("<B1-Motion>", self._perform_window_drag)
-            widget.bind("<Double-Button-1>", lambda _e: self._toggle_maximize_window())
-
-        self._update_maximize_button()
-
-    def _close_app(self) -> None:
-        try:
-            self.root.destroy()
-        except Exception:
-            pass
-
-    def _start_window_drag(self, event) -> None:
-        if getattr(self, "_is_maximized", False):
-            cursor_x, cursor_y = event.x_root, event.y_root
-            self._toggle_maximize_window(force_state=False)
-            self.root.update_idletasks()
-            new_x = self.root.winfo_rootx()
-            new_y = self.root.winfo_rooty()
-            self._drag_offset = (cursor_x - new_x, cursor_y - new_y)
-            return
-        self._drag_offset = (event.x_root - self.root.winfo_rootx(), event.y_root - self.root.winfo_rooty())
-
-    def _perform_window_drag(self, event) -> None:
-        offset = getattr(self, "_drag_offset", None)
-        if offset is None:
-            return
-        x = event.x_root - offset[0]
-        y = event.y_root - offset[1]
-        self.root.geometry(f"+{x}+{y}")
-        if not getattr(self, "_is_maximized", False):
-            self._remember_window_geometry()
-
-    def _remember_window_geometry(self) -> None:
-        try:
-            self._window_geometry = self.root.geometry()
-        except Exception:
-            pass
-
-    def _monitor_work_area(self) -> tuple[int, int, int, int] | None:
-        try:
-            import ctypes
-            from ctypes import wintypes
-
-            user32 = ctypes.windll.user32  # type: ignore[attr-defined]
-            root_x = self.root.winfo_rootx()
-            root_y = self.root.winfo_rooty()
-            width = max(self.root.winfo_width(), 1)
-            height = max(self.root.winfo_height(), 1)
-            center_x = root_x + width // 2
-            center_y = root_y + height // 2
-
-            class MONITORINFO(ctypes.Structure):
-                _fields_ = [
-                    ("cbSize", wintypes.DWORD),
-                    ("rcMonitor", wintypes.RECT),
-                    ("rcWork", wintypes.RECT),
-                    ("dwFlags", wintypes.DWORD),
-                ]
-
-            monitor = user32.MonitorFromPoint(
-                wintypes.POINT(center_x, center_y), 2  # MONITOR_DEFAULTTONEAREST
-            )
-            info = MONITORINFO()
-            info.cbSize = ctypes.sizeof(MONITORINFO)
-            if not user32.GetMonitorInfoW(monitor, ctypes.byref(info)):
-                return None
-            work = info.rcWork
-            return work.left, work.top, work.right, work.bottom
-        except Exception:
-            return None
-
-    def _maximize_window(self) -> None:
-        self._remember_window_geometry()
-        work_area = self._monitor_work_area()
-        if work_area is None:
-            screen_width = self.root.winfo_screenwidth()
-            screen_height = self.root.winfo_screenheight()
-            left = 0
-            top = 0
-            width = screen_width
-            height = screen_height
-        else:
-            left, top, right, bottom = work_area
-            width = max(1, right - left)
-            height = max(1, bottom - top)
-        self.root.geometry(f"{width}x{height}+{left}+{top}")
-        self._is_maximized = True
-        self._update_maximize_button()
-
-    def _restore_window(self) -> None:
-        geometry = getattr(self, "_window_geometry", None)
-        if not geometry:
-            screen_width = self.root.winfo_screenwidth()
-            screen_height = self.root.winfo_screenheight()
-            width = int(screen_width * 0.8)
-            height = int(screen_height * 0.8)
-            x = (screen_width - width) // 2
-            y = (screen_height - height) // 4
-            geometry = f"{width}x{height}+{x}+{y}"
-        self.root.geometry(geometry)
-        self._is_maximized = False
-        self._update_maximize_button()
-
-    def _toggle_maximize_window(self, force_state: bool | None = None) -> None:
-        desired = force_state if force_state is not None else not getattr(self, "_is_maximized", False)
-        if desired:
-            self._maximize_window()
-        else:
-            self._restore_window()
-
-    def _minimize_window(self) -> None:
-        try:
-            self._remember_window_geometry()
-            use_or = getattr(self, "_use_overrideredirect", False)
-            if use_or and hasattr(self.root, "overrideredirect"):
-                try:
-                    self.root.overrideredirect(False)
-                except Exception:
-                    pass
-            self.root.iconify()
-            if use_or:
-                restorer = getattr(self, "_restore_borderless", None)
-                if callable(restorer):
-                    self.root.after(120, restorer)
-                elif hasattr(self.root, "overrideredirect"):
-                    self.root.after(120, lambda: self.root.overrideredirect(True))  # type: ignore[arg-type]
-        except Exception:
-            pass
-
-    def _update_maximize_button(self) -> None:
-        button = getattr(self, "_max_button", None)
-        if button is None:
-            return
-        symbol = "❐" if getattr(self, "_is_maximized", False) else "□"
-        button.configure(text=symbol)
-
-    def _maybe_focus_window(self, _event) -> None:
-        try:
-            self.root.focus_set()
-        except Exception:
-            pass
-
-    def _toolbar_palette(self) -> dict[str, str]:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        if is_dark:
-            return {
-                "normal": "#2f2f35",
-                "hover": "#3a3a40",
-                "active": "#1f1f25",
-                "outline": "#4d4d50",
-                "outline_focus": "#7c7c88",
-                "text": "#f1f1f5",
-            }
-        return {
-            "normal": "#ffffff",
-            "hover": "#ededf4",
-            "active": "#dcdce6",
-            "outline": "#d0d0d8",
-            "outline_focus": "#a9a9b2",
-            "text": "#1f1f1f",
-        }
-
-    def _navigation_palette(self) -> dict[str, str]:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        default_bg = "#0f0f10" if is_dark else "#ededf2"
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else default_bg
-        fg = "#f5f5f5" if is_dark else "#1f1f1f"
-        return {"bg": bg, "fg": fg}
-
-    def _refresh_toolbar_buttons_theme(self) -> None:
-        if not getattr(self, "_toolbar_buttons", None):
-            return
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else "#f2f2f7"
-        palette = self._toolbar_palette()
-        for data in self._toolbar_buttons:
-            canvas = data["canvas"]  # type: ignore[index]
-            rect_id = data["rect"]  # type: ignore[index]
-            text_ids = data["text_ids"]  # type: ignore[index]
-            data["palette"] = palette.copy()
-            canvas.configure(bg=bg)
-            canvas.itemconfigure(rect_id, fill=palette["normal"], outline=palette["outline"])
-            for text_id in text_ids:
-                canvas.itemconfigure(text_id, fill=palette["text"])
-
-    def _refresh_navigation_buttons_theme(self) -> None:
-        if not getattr(self, "_nav_buttons", None):
-            return
-        palette = self._navigation_palette()
-        for btn in self._nav_buttons:
-            btn.configure(
-                background=palette["bg"],
-                activebackground=palette["bg"],
-                fg=palette["fg"],
-                activeforeground=palette["fg"],
-            )
-
-    def _canvas_background_colour(self) -> str:
-        return "#0f0f10" if getattr(self, "theme", "light") == "dark" else "#ffffff"
-
-    def _refresh_canvas_backgrounds(self) -> None:
-        bg = self._canvas_background_colour()
-        for attr in ("canvas_orig", "canvas_overlay"):
-            canvas = getattr(self, attr, None)
-            if canvas is not None:
-                try:
-                    canvas.configure(bg=bg)
-                except Exception:
-                    pass
-
-    def _refresh_status_palette(self, fg: str) -> None:
-        self.status.configure(foreground=fg)
-        self._status_palette["fg"] = fg
-
-    def _refresh_accent_labels(self, colour: str) -> None:
-        try:
-            self.filename_label.configure(foreground=colour)
-            self.ratio_label.configure(foreground=colour)
-        except Exception:
-            pass
-
-    def _default_colour_hex(self) -> str:
-        defaults = getattr(self, "DEFAULTS", {})
-        hue_min = float(defaults.get("hue_min", 0.0))
-        hue_max = float(defaults.get("hue_max", hue_min))
-        if hue_min <= hue_max:
-            hue = (hue_min + hue_max) / 2.0
-        else:
-            span = ((hue_max + 360.0) - hue_min) / 2.0
-            hue = (hue_min + span) % 360.0
-
-        sat_min = float(defaults.get("sat_min", 0.0))
-        saturation = (sat_min + 100.0) / 2.0
-
-        val_min = float(defaults.get("val_min", 0.0))
-        val_max = float(defaults.get("val_max", 100.0))
-        value = (val_min + val_max) / 2.0
-
-        r, g, b = colorsys.hsv_to_rgb(hue / 360.0, saturation / 100.0, value / 100.0)
-        return f"#{int(r * 255):02x}{int(g * 255):02x}{int(b * 255):02x}"
-
-    def _init_copy_menu(self):
-        self._copy_target = None
-        self.copy_menu = tk.Menu(self.root, tearoff=0)
-        label = self._t("menu.copy") if hasattr(self, "_t") else "Copy"
-        self.copy_menu.add_command(label=label, command=self._copy_current_label)
-
-    def _attach_copy_menu(self, widget):
-        widget.bind("<Button-3>", lambda event, w=widget: self._show_copy_menu(event, w))
-        widget.bind("<Control-c>", lambda event, w=widget: self._copy_widget_text(w))
-
-    def _show_copy_menu(self, event, widget):
-        self._copy_target = widget
-        try:
-            self.copy_menu.tk_popup(event.x_root, event.y_root)
-        finally:
-            self.copy_menu.grab_release()
-
-    def _copy_current_label(self):
-        if self._copy_target is not None:
-            self._copy_widget_text(self._copy_target)
-
-    def _copy_widget_text(self, widget):
-        try:
-            text = widget.cget("text")
-        except Exception:
-            text = ""
-        if not text:
-            return
-        try:
-            self.root.clipboard_clear()
-            self.root.clipboard_append(text)
-        except Exception:
-            pass
-
-
-__all__ = ["UIBuilderMixin"]

app/lang/de.toml

@@ -10,6 +10,8 @@
 "toolbar.undo_exclude" = "Letzten Ausschluss entfernen"
 "toolbar.reset_sliders" = "Slider zurücksetzen"
 "toolbar.toggle_theme" = "Theme umschalten"
+"toolbar.open_app_folder" = "Programmordner öffnen"
+"toolbar.prefer_dark" = "Dunkelheit bevorzugen"
 "status.no_file" = "Keine Datei geladen."
 "status.defaults_restored" = "Standardwerte aktiv."
 "status.free_draw_enabled" = "Freihand-Ausschluss aktiviert."
@@ -17,7 +19,7 @@
 "status.loaded" = "Geladen: {name} — {dimensions}{position}"
 "status.filename_label" = "{name} — {dimensions}{position}"
 "status.color_selected" = "Farbe gewählt: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.sample_colour" = "Beispielfarbe gewählt: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.sample_color" = "Beispielfarbe gewählt: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
 "status.pick_mode_ready" = "Pick-Modus: Klicke links ins Bild, um Farbe zu wählen (Esc beendet)"
 "status.pick_mode_ended" = "Pick-Modus beendet."
 "status.pick_mode_from_image" = "Farbe vom Bild gewählt: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
@@ -41,7 +43,9 @@
 "sliders.val_max" = "Helligkeit Max (%)"
 "sliders.alpha" = "Overlay Alpha"
 "stats.placeholder" = "Markierungen (mit Ausschlüssen): —"
-"stats.summary" = "Markierungen (mit Ausschlüssen): {with_pct:.2f}%    |    Markierungen (ohne Ausschlüsse): {without_pct:.2f}%    |    Ausgeschlossen: {excluded_pct:.2f}% der Pixel, davon {excluded_match_pct:.2f}% markiert"
+"stats.summary" = "Score: {score:.2f}%    |    Markierungen (m. Ausschl.): {with_pct:.2f}%    |    Markierungen: {without_pct:.2f}%    |    {brightness_label}: {brightness:.1f}%    |    Ausgeschlossen: {excluded_pct:.2f}%"
+"stats.brightness_label" = "Helligkeit"
+"stats.darkness_label" = "Dunkelheit"
 "menu.copy" = "Kopieren"
 "dialog.info_title" = "Info"
 "dialog.error_title" = "Fehler"
@@ -49,7 +53,7 @@
 "dialog.open_image_title" = "Bild wählen"
 "dialog.open_folder_title" = "Ordner mit Bildern wählen"
 "dialog.save_overlay_title" = "Overlay speichern als"
-"dialog.choose_colour_title" = "Farbe wählen"
+"dialog.choose_color_title" = "Farbe wählen"
 "dialog.images_filter" = "Bilder"
 "dialog.folder_not_found" = "Der Ordner wurde nicht gefunden."
 "dialog.folder_empty" = "Keine unterstützten Bilder im Ordner gefunden."
@@ -59,4 +63,28 @@
 "dialog.no_image_loaded" = "Kein Bild geladen."
 "dialog.no_preview_available" = "Keine Preview vorhanden."
 "dialog.overlay_saved" = "Overlay gespeichert: {path}"
+"dialog.json_filter" = "JSON-Dateien (*.json)"
+"dialog.export_settings_title" = "Einstellungen als JSON exportieren"
+"dialog.import_settings_title" = "Einstellungen aus JSON importieren"
+"status.settings_exported" = "Einstellungen exportiert: {path}"
+"status.settings_imported" = "Einstellungen importiert."
+"toolbar.export_settings" = "Einstellungen exportieren (JSON)"
+"toolbar.import_settings" = "Einstellungen importieren (JSON)"
+"dialog.export_stats_title" = "Ordner-Statistiken exportieren (CSV)"
+"dialog.csv_filter" = "CSV-Dateien (*.csv)"
 "status.drag_drop" = "Bild oder Ordner hier ablegen."
+"status.exporting" = "Statistiken werden exportiert... ({current}/{total})"
+"status.export_done" = "Export abgeschlossen: {path}"
+"toolbar.export_folder" = "Ordner-Statistik"
+"menu.file" = "Datei"
+"menu.edit" = "Bearbeiten"
+"menu.view" = "Ansicht"
+"menu.tools" = "Werkzeuge"
+
+"toolbar.pull_patterns" = "Muster-Bilder herunterladen"
+"dialog.puller_title" = "Muster-Bilder herunterladen"
+"dialog.puller_instruction" = "CSGOSkins.gg Artikel-URL einfügen:"
+"dialog.puller_start" = "Download starten"
+"dialog.puller_cancel" = "Abbrechen"
+"dialog.puller_invalid_url" = "Ungültiges URL-Format."
+"dialog.puller_success" = "Alle Muster erfolgreich heruntergeladen!"

app/lang/en.toml

@@ -2,7 +2,7 @@
 "app.title" = "Interactive Color Range Analyzer"
 "toolbar.open_image" = "Open image"
 "toolbar.open_folder" = "Open folder"
-"toolbar.choose_color" = "Choose colour"
+"toolbar.choose_color" = "Choose color"
 "toolbar.pick_from_image" = "Pick from image"
 "toolbar.save_overlay" = "Save overlay"
 "toolbar.clear_excludes" = "Clear exclusions"
@@ -10,19 +10,21 @@
 "toolbar.undo_exclude" = "Undo last exclusion"
 "toolbar.reset_sliders" = "Reset sliders"
 "toolbar.toggle_theme" = "Toggle theme"
+"toolbar.open_app_folder" = "Open application folder"
+"toolbar.prefer_dark" = "Prefer darkness"
 "status.no_file" = "No file loaded."
 "status.defaults_restored" = "Defaults restored."
 "status.free_draw_enabled" = "Free-draw exclusion mode enabled."
 "status.free_draw_disabled" = "Rectangle exclusion mode enabled."
 "status.loaded" = "Loaded: {name} — {dimensions}{position}"
 "status.filename_label" = "{name} — {dimensions}{position}"
-"status.color_selected" = "Colour chosen: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.color_selected" = "Color chosen: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.sample_colour" = "Sample colour applied: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.sample_color" = "Sample color applied: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.pick_mode_ready" = "Pick mode: Click the left image to choose a colour (Esc exits)"
+"status.pick_mode_ready" = "Pick mode: Click the left image to choose a color (Esc exits)"
 "status.pick_mode_ended" = "Pick mode ended."
-"status.pick_mode_from_image" = "Colour picked from image: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.pick_mode_from_image" = "Color picked from image: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"palette.current" = "Colour:"
+"palette.current" = "Color:"
-"palette.more" = "More colours:"
+"palette.more" = "More colors:"
 "palette.swatch.red" = "Red"
 "palette.swatch.orange" = "Orange"
 "palette.swatch.yellow" = "Yellow"
@@ -41,7 +43,9 @@
 "sliders.val_max" = "Value max (%)"
 "sliders.alpha" = "Overlay alpha"
 "stats.placeholder" = "Matches (with exclusions): —"
-"stats.summary" = "Matches (with exclusions): {with_pct:.2f}%    |    Matches (without exclusions): {without_pct:.2f}%    |    Excluded: {excluded_pct:.2f}% of pixels, {excluded_match_pct:.2f}% marked"
+"stats.summary" = "Score: {score:.2f}%    |    Matches (w/ excl.): {with_pct:.2f}%    |    Matches: {without_pct:.2f}%    |    {brightness_label}: {brightness:.1f}%    |    Excluded: {excluded_pct:.2f}%"
+"stats.brightness_label" = "Brightness"
+"stats.darkness_label" = "Darkness"
 "menu.copy" = "Copy"
 "dialog.info_title" = "Info"
 "dialog.error_title" = "Error"
@@ -49,7 +53,7 @@
 "dialog.open_image_title" = "Select image"
 "dialog.open_folder_title" = "Select folder"
 "dialog.save_overlay_title" = "Save overlay as"
-"dialog.choose_colour_title" = "Choose colour"
+"dialog.choose_color_title" = "Choose color"
 "dialog.images_filter" = "Images"
 "dialog.folder_not_found" = "The folder could not be found."
 "dialog.folder_empty" = "No supported images were found in the folder."
@@ -59,4 +63,28 @@
 "dialog.no_image_loaded" = "No image loaded."
 "dialog.no_preview_available" = "No preview available."
 "dialog.overlay_saved" = "Overlay saved: {path}"
+"dialog.json_filter" = "JSON Files (*.json)"
+"dialog.export_settings_title" = "Export settings to JSON"
+"dialog.import_settings_title" = "Import settings from JSON"
+"status.settings_exported" = "Settings exported: {path}"
+"status.settings_imported" = "Settings imported."
+"toolbar.export_settings" = "Export settings (JSON)"
+"toolbar.import_settings" = "Import settings (JSON)"
+"dialog.export_stats_title" = "Export Folder Statistics (CSV)"
+"dialog.csv_filter" = "CSV Files (*.csv)"
 "status.drag_drop" = "Drop an image or folder here to open it."
+"status.exporting" = "Exporting statistics... ({current}/{total})"
+"status.export_done" = "Export complete: {path}"
+"toolbar.export_folder" = "Export Folder Stats"
+"menu.file" = "File"
+"menu.edit" = "Edit"
+"menu.view" = "View"
+"menu.tools" = "Tools"
+
+"toolbar.pull_patterns" = "Pull Pattern Images"
+"dialog.puller_title" = "Pull Pattern Images"
+"dialog.puller_instruction" = "Paste a CSGOSkins.gg item URL:"
+"dialog.puller_start" = "Start Download"
+"dialog.puller_cancel" = "Cancel"
+"dialog.puller_invalid_url" = "Invalid URL format."
+"dialog.puller_success" = "All patterns downloaded successfully!"

app/logic/__init__.py

@@ -1,25 +1,23 @@
-"""Logic utilities and mixins for processing and configuration."""
+"""Logic utilities and configuration constants."""
 
 from .constants import (
     BASE_DIR,
     DEFAULTS,
     IMAGES_DIR,
     LANGUAGE,
+    OVERLAY_COLOR,
     PREVIEW_MAX_SIZE,
     RESET_EXCLUSIONS_ON_IMAGE_CHANGE,
     SUPPORTED_IMAGE_EXTENSIONS,
 )
-from .image_processing import ImageProcessingMixin
-from .reset import ResetMixin
 
 __all__ = [
     "BASE_DIR",
     "DEFAULTS",
     "IMAGES_DIR",
     "LANGUAGE",
+    "OVERLAY_COLOR",
     "PREVIEW_MAX_SIZE",
     "RESET_EXCLUSIONS_ON_IMAGE_CHANGE",
     "SUPPORTED_IMAGE_EXTENSIONS",
-    "ImageProcessingMixin",
-    "ResetMixin",
 ]

app/logic/constants.py

@@ -94,7 +94,7 @@ def _extract_language(data: dict[str, Any]) -> str:
 
 _CONFIG_DATA = _load_config_data()
 
-_OPTION_DEFAULTS = {"reset_exclusions_on_image_change": False}
+_OPTION_DEFAULTS = {"reset_exclusions_on_image_change": False, "overlay_color": "#ff0000"}
 
 
 def _extract_options(data: dict[str, Any]) -> dict[str, Any]:
@@ -105,6 +105,9 @@ def _extract_options(data: dict[str, Any]) -> dict[str, Any]:
     value = section.get("reset_exclusions_on_image_change")
     if isinstance(value, bool):
         result["reset_exclusions_on_image_change"] = value
+    color = section.get("overlay_color")
+    if isinstance(color, str) and color.startswith("#") and len(color) in (7, 9):
+        result["overlay_color"] = color
     return result
 
 
@@ -112,3 +115,4 @@ DEFAULTS = {**_DEFAULTS_BASE, **_extract_default_overrides(_CONFIG_DATA)}
 LANGUAGE = _extract_language(_CONFIG_DATA)
 OPTIONS = {**_OPTION_DEFAULTS, **_extract_options(_CONFIG_DATA)}
 RESET_EXCLUSIONS_ON_IMAGE_CHANGE = OPTIONS["reset_exclusions_on_image_change"]
+OVERLAY_COLOR = OPTIONS["overlay_color"]

app/logic/image_processing.py

@@ -1,485 +0,0 @@
-"""Image loading, processing, and statistics logic."""
-
-from __future__ import annotations
-
-import colorsys
-from pathlib import Path
-from typing import Iterable, Sequence, Tuple
-
-from tkinter import filedialog, messagebox
-
-from PIL import Image, ImageDraw, ImageTk
-
-from .constants import IMAGES_DIR, PREVIEW_MAX_SIZE, SUPPORTED_IMAGE_EXTENSIONS
-
-
-class ImageProcessingMixin:
-    """Handles all image related operations."""
-
-    image_path: Path | None
-    orig_img: Image.Image | None
-    preview_img: Image.Image | None
-    preview_tk: ImageTk.PhotoImage | None
-    overlay_tk: ImageTk.PhotoImage | None
-
-    image_paths: list[Path]
-    current_image_index: int
-
-    def load_image(self) -> None:
-        default_dir = IMAGES_DIR if IMAGES_DIR.exists() else Path.cwd()
-        path = filedialog.askopenfilename(
-            title=self._t("dialog.open_image_title"),
-            filetypes=[(self._t("dialog.images_filter"), "*.webp *.png *.jpg *.jpeg *.bmp")],
-            initialdir=str(default_dir),
-        )
-        if not path:
-            return
-        self._set_image_collection([Path(path)], 0)
-
-    def load_folder(self) -> None:
-        default_dir = IMAGES_DIR if IMAGES_DIR.exists() else Path.cwd()
-        directory = filedialog.askdirectory(
-            title=self._t("dialog.open_folder_title"),
-            initialdir=str(default_dir),
-        )
-        if not directory:
-            return
-        folder = Path(directory)
-        if not folder.exists():
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.folder_not_found"),
-            )
-            return
-        image_files = sorted(
-            (
-                path
-                for path in folder.iterdir()
-                if path.suffix.lower() in SUPPORTED_IMAGE_EXTENSIONS and path.is_file()
-            ),
-            key=lambda item: item.name.lower(),
-        )
-        if not image_files:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.folder_empty"),
-            )
-            return
-        self._set_image_collection(image_files, 0)
-
-    def show_next_image(self, event=None) -> None:
-        if not getattr(self, "image_paths", None):
-            return
-        if not self.image_paths:
-            return
-        current = getattr(self, "current_image_index", -1)
-        next_index = (current + 1) % len(self.image_paths)
-        self._display_image_by_index(next_index)
-
-    def show_previous_image(self, event=None) -> None:
-        if not getattr(self, "image_paths", None):
-            return
-        if not self.image_paths:
-            return
-        current = getattr(self, "current_image_index", -1)
-        prev_index = (current - 1) % len(self.image_paths)
-        self._display_image_by_index(prev_index)
-
-    def _set_image_collection(self, paths: Sequence[Path], start_index: int) -> None:
-        self.image_paths = list(paths)
-        if not self.image_paths:
-            return
-        self.exclude_shapes = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.current_image_index = -1
-        self._display_image_by_index(max(0, start_index))
-
-    def _display_image_by_index(self, index: int) -> None:
-        if not self.image_paths:
-            return
-        if index < 0 or index >= len(self.image_paths):
-            return
-        path = self.image_paths[index]
-        if not path.exists():
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.file_missing", path=path),
-            )
-            return
-        try:
-            image = Image.open(path).convert("RGBA")
-        except Exception as exc:
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.image_open_failed", error=exc),
-            )
-            return
-
-        self.image_path = path
-        self.orig_img = image
-        if getattr(self, "reset_exclusions_on_switch", False):
-            self.exclude_shapes = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.pick_mode = False
-
-        self.prepare_preview()
-        self.update_preview()
-
-        dimensions = f"{self.orig_img.width}x{self.orig_img.height}"
-        suffix = f" [{index + 1}/{len(self.image_paths)}]" if len(self.image_paths) > 1 else ""
-        status_text = self._t("status.loaded", name=path.name, dimensions=dimensions, position=suffix)
-        self.status.config(text=status_text)
-        self.status_default_text = status_text
-        if hasattr(self, "filename_label"):
-            filename_text = self._t(
-                "status.filename_label",
-                name=path.name,
-                dimensions=dimensions,
-                position=suffix,
-            )
-            self.filename_label.config(text=filename_text)
-
-        self.current_image_index = index
-
-    def save_overlay(self) -> None:
-        if self.orig_img is None:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.no_image_loaded"),
-            )
-            return
-        if self.preview_img is None:
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.no_preview_available"),
-            )
-            return
-
-        overlay = self._build_overlay_image(
-            self.orig_img,
-            tuple(self.exclude_shapes),
-            alpha=int(self.alpha.get()),
-            scale_from_preview=self.preview_img.size,
-            is_match_fn=self.matches_target_color,
-        )
-        merged = Image.alpha_composite(self.orig_img.convert("RGBA"), overlay)
-
-        out_path = filedialog.asksaveasfilename(
-            defaultextension=".png",
-            filetypes=[("PNG", "*.png")],
-            title=self._t("dialog.save_overlay_title"),
-        )
-        if not out_path:
-            return
-        merged.save(out_path)
-        messagebox.showinfo(
-            self._t("dialog.saved_title"),
-            self._t("dialog.overlay_saved", path=out_path),
-        )
-
-    def prepare_preview(self) -> None:
-        if self.orig_img is None:
-            return
-        width, height = self.orig_img.size
-        max_w, max_h = PREVIEW_MAX_SIZE
-        scale = min(max_w / width, max_h / height)
-        if scale <= 0:
-            scale = 1.0
-        size = (max(1, int(width * scale)), max(1, int(height * scale)))
-        self.preview_img = self.orig_img.resize(size, Image.LANCZOS)
-        self.preview_tk = ImageTk.PhotoImage(self.preview_img)
-        self.canvas_orig.delete("all")
-        self.canvas_orig.config(width=size[0], height=size[1])
-        self.canvas_overlay.config(width=size[0], height=size[1])
-        self.canvas_orig.create_image(0, 0, anchor="nw", image=self.preview_tk)
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        if getattr(self, "exclude_shapes", None):
-            self._ensure_exclude_mask()
-
-    def update_preview(self) -> None:
-        if self.preview_img is None:
-            return
-        self._ensure_exclude_mask()
-        merged = self.create_overlay_preview()
-        if merged is None:
-            return
-        self.overlay_tk = ImageTk.PhotoImage(merged)
-        self.canvas_overlay.delete("all")
-        self.canvas_overlay.create_image(0, 0, anchor="nw", image=self.overlay_tk)
-
-        self.canvas_orig.delete("all")
-        self.canvas_orig.create_image(0, 0, anchor="nw", image=self.preview_tk)
-        self._render_exclusion_overlays()
-
-        stats = self.compute_stats_preview()
-        if stats:
-            matches_all, total_all = stats["all"]
-            matches_keep, total_keep = stats["keep"]
-            matches_ex, total_ex = stats["excl"]
-            r_with = (matches_keep / total_keep * 100) if total_keep else 0.0
-            r_no = (matches_all / total_all * 100) if total_all else 0.0
-            excl_share = (total_ex / total_all * 100) if total_all else 0.0
-            excl_match = (matches_ex / total_ex * 100) if total_ex else 0.0
-            self.ratio_label.config(
-                text=self._t(
-                    "stats.summary",
-                    with_pct=r_with,
-                    without_pct=r_no,
-                    excluded_pct=excl_share,
-                    excluded_match_pct=excl_match,
-                )
-            )
-
-        refresher = getattr(self, "_refresh_canvas_backgrounds", None)
-        if callable(refresher):
-            refresher()
-        else:
-            bg = "#0f0f10" if self.theme == "dark" else "#ffffff"
-            self.canvas_orig.configure(bg=bg)
-            self.canvas_overlay.configure(bg=bg)
-
-    def create_overlay_preview(self) -> Image.Image | None:
-        if self.preview_img is None:
-            return None
-        self._ensure_exclude_mask()
-        base = self.preview_img.convert("RGBA")
-        overlay = Image.new("RGBA", base.size, (0, 0, 0, 0))
-        draw = ImageDraw.Draw(overlay)
-        pixels = base.load()
-        mask_px = self._exclude_mask_px
-        width, height = base.size
-        alpha = int(self.alpha.get())
-        for y in range(height):
-            for x in range(width):
-                if mask_px is not None and mask_px[x, y]:
-                    continue
-                r, g, b, a = pixels[x, y]
-                if a == 0:
-                    continue
-                if self.matches_target_color(r, g, b):
-                    draw.point((x, y), fill=(255, 0, 0, alpha))
-        merged = Image.alpha_composite(base, overlay)
-        outline = ImageDraw.Draw(merged)
-        accent_dark = (255, 215, 0, 200)
-        accent_light = (197, 98, 23, 200)
-        accent = accent_dark if getattr(self, "theme", "light") == "dark" else accent_light
-        for shape in getattr(self, "exclude_shapes", []):
-            if shape.get("kind") == "rect":
-                x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                outline.rectangle([x0, y0, x1, y1], outline=accent, width=3)
-            elif shape.get("kind") == "polygon":
-                points = shape.get("points", [])
-                if len(points) < 2:
-                    continue
-                path = points if points[0] == points[-1] else points + [points[0]]
-                outline.line(path, fill=accent, width=2, joint="round")
-        return merged
-
-    def compute_stats_preview(self):
-        if self.preview_img is None:
-            return None
-        self._ensure_exclude_mask()
-        px = self.preview_img.convert("RGBA").load()
-        mask_px = self._exclude_mask_px
-        width, height = self.preview_img.size
-        matches_all = total_all = 0
-        matches_keep = total_keep = 0
-        matches_excl = total_excl = 0
-        for y in range(height):
-            for x in range(width):
-                r, g, b, a = px[x, y]
-                if a == 0:
-                    continue
-                excluded = bool(mask_px and mask_px[x, y])
-                total_all += 1
-                if self.matches_target_color(r, g, b):
-                    matches_all += 1
-                if not excluded:
-                    total_keep += 1
-                    if self.matches_target_color(r, g, b):
-                        matches_keep += 1
-                else:
-                    total_excl += 1
-                    if self.matches_target_color(r, g, b):
-                        matches_excl += 1
-        return {
-            "all": (matches_all, total_all),
-            "keep": (matches_keep, total_keep),
-            "excl": (matches_excl, total_excl),
-        }
-
-    def matches_target_color(self, r, g, b) -> bool:
-        h, s, v = colorsys.rgb_to_hsv(r / 255.0, g / 255.0, b / 255.0)
-        hue = h * 360.0
-        hmin = float(self.hue_min.get())
-        hmax = float(self.hue_max.get())
-        smin = float(self.sat_min.get()) / 100.0
-        vmin = float(self.val_min.get()) / 100.0
-        vmax = float(self.val_max.get()) / 100.0
-        if hmin <= hmax:
-            hue_ok = hmin <= hue <= hmax
-        else:
-            hue_ok = (hue >= hmin) or (hue <= hmax)
-        return hue_ok and (s >= smin) and (v >= vmin) and (v <= vmax)
-
-    def _is_excluded(self, x: int, y: int) -> bool:
-        self._ensure_exclude_mask()
-        if self._exclude_mask_px is None:
-            return False
-        try:
-            return bool(self._exclude_mask_px[x, y])
-        except Exception:
-            return False
-
-    @classmethod
-    def _build_overlay_image(
-        cls,
-        image: Image.Image,
-        shapes: Iterable[dict[str, object]],
-        *,
-        alpha: int,
-        scale_from_preview: Tuple[int, int],
-        is_match_fn,
-    ) -> Image.Image:
-        overlay = Image.new("RGBA", image.size, (0, 0, 0, 0))
-        draw = ImageDraw.Draw(overlay)
-        pixels = image.load()
-        width, height = image.size
-        mask = cls._build_exclude_mask_for_size(tuple(shapes), scale_from_preview, image.size)
-        mask_px = mask.load() if mask else None
-        for y in range(height):
-            for x in range(width):
-                if mask_px is not None and mask_px[x, y]:
-                    continue
-                r, g, b, a = pixels[x, y]
-                if a == 0:
-                    continue
-                if is_match_fn(r, g, b):
-                    draw.point((x, y), fill=(255, 0, 0, alpha))
-        return overlay
-
-    @classmethod
-    def _build_exclude_mask_for_size(
-        cls,
-        shapes: Iterable[dict[str, object]],
-        preview_size: Tuple[int, int],
-        target_size: Tuple[int, int],
-    ) -> Image.Image | None:
-        if not preview_size or not target_size or preview_size[0] == 0 or preview_size[1] == 0:
-            return None
-        mask = Image.new("L", target_size, 0)
-        draw = ImageDraw.Draw(mask)
-        scale_x = target_size[0] / preview_size[0]
-        scale_y = target_size[1] / preview_size[1]
-        for shape in shapes:
-            kind = shape.get("kind")
-            cls._draw_shape_on_mask(draw, shape, scale_x=scale_x, scale_y=scale_y)
-        return mask
-
-    def _ensure_exclude_mask(self) -> None:
-        if self.preview_img is None:
-            return
-        size = self.preview_img.size
-        if (
-            self._exclude_mask is None
-            or self._exclude_mask.size != size
-            or getattr(self, "_exclude_mask_dirty", False)
-        ):
-            self._exclude_mask = Image.new("L", size, 0)
-            draw = ImageDraw.Draw(self._exclude_mask)
-            for shape in getattr(self, "exclude_shapes", []):
-                self._draw_shape_on_mask(draw, shape, scale_x=1.0, scale_y=1.0)
-            self._exclude_mask_px = self._exclude_mask.load()
-            self._exclude_mask_dirty = False
-        elif self._exclude_mask_px is None:
-            self._exclude_mask_px = self._exclude_mask.load()
-
-    def _stamp_shape_on_mask(self, shape: dict[str, object]) -> None:
-        if self.preview_img is None:
-            return
-        if self._exclude_mask is None or self._exclude_mask.size != self.preview_img.size:
-            self._exclude_mask_dirty = True
-            return
-        draw = ImageDraw.Draw(self._exclude_mask)
-        self._draw_shape_on_mask(draw, shape, scale_x=1.0, scale_y=1.0)
-        self._exclude_mask_px = self._exclude_mask.load()
-
-    @staticmethod
-    def _draw_shape_on_mask(
-        draw: ImageDraw.ImageDraw,
-        shape: dict[str, object],
-        *,
-        scale_x: float,
-        scale_y: float,
-    ) -> None:
-        kind = shape.get("kind")
-        if kind == "rect":
-            x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-            draw.rectangle(
-                [
-                    x0 * scale_x,
-                    y0 * scale_y,
-                    x1 * scale_x,
-                    y1 * scale_y,
-                ],
-                fill=255,
-            )
-        elif kind == "polygon":
-            points = shape.get("points")
-            if not points or len(points) < 2:
-                return
-            scaled = [(px * scale_x, py * scale_y) for px, py in points]  # type: ignore[misc]
-            draw.polygon(scaled, fill=255)
-
-    def _render_exclusion_overlays(self) -> None:
-        if not hasattr(self, "canvas_orig"):
-            return
-        for item in getattr(self, "_exclude_canvas_ids", []):
-            try:
-                self.canvas_orig.delete(item)
-            except Exception:
-                pass
-        self._exclude_canvas_ids = []
-        accent_dark = "#ffd700"
-        accent_light = "#c56217"
-        accent = accent_dark if getattr(self, "theme", "light") == "dark" else accent_light
-        for shape in getattr(self, "exclude_shapes", []):
-            kind = shape.get("kind")
-            if kind == "rect":
-                x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                item = self.canvas_orig.create_rectangle(
-                    x0, y0, x1, y1, outline=accent, width=3
-                )
-                self._exclude_canvas_ids.append(item)
-            elif kind == "polygon":
-                points = shape.get("points")
-                if not points or len(points) < 2:
-                    continue
-                closed = points if points[0] == points[-1] else points + [points[0]]  # type: ignore[operator]
-                coords = [coord for point in closed for coord in point]  # type: ignore[misc]
-                item = self.canvas_orig.create_line(
-                    *coords,
-                    fill=accent,
-                    width=2,
-                    smooth=True,
-                    capstyle="round",
-                    joinstyle="round",
-                )
-                self._exclude_canvas_ids.append(item)
-
-
-__all__ = ["ImageProcessingMixin"]

app/logic/reset.py

@@ -1,36 +0,0 @@
-"""Utility mixin for restoring default slider values."""
-
-from __future__ import annotations
-
-
-class ResetMixin:
-    def reset_sliders(self):
-        self.hue_min.set(self.DEFAULTS["hue_min"])
-        self.hue_max.set(self.DEFAULTS["hue_max"])
-        self.sat_min.set(self.DEFAULTS["sat_min"])
-        self.val_min.set(self.DEFAULTS["val_min"])
-        self.val_max.set(self.DEFAULTS["val_max"])
-        self.alpha.set(self.DEFAULTS["alpha"])
-        self.update_preview()
-        try:
-            default_hex = self._default_colour_hex()  # type: ignore[attr-defined]
-        except Exception:
-            default_hex = None
-        if default_hex and hasattr(self, "_parse_hex_colour") and hasattr(self, "_update_selected_colour"):
-            try:
-                rgb = self._parse_hex_colour(default_hex)  # type: ignore[attr-defined]
-            except Exception:
-                rgb = None
-            if rgb:
-                try:
-                    self._update_selected_colour(*rgb)  # type: ignore[arg-type,attr-defined]
-                except Exception:
-                    pass
-        default_text = getattr(self, "status_default_text", None)
-        if default_text is None:
-            default_text = self._t("status.defaults_restored") if hasattr(self, "_t") else "Defaults restored."
-        if hasattr(self, "status"):
-            self.status.config(text=default_text)
-
-
-__all__ = ["ResetMixin"]

app/qt/app.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import sys
 from pathlib import Path
 
-from PySide6 import QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtWidgets
 
 from app.logic import DEFAULTS, LANGUAGE, RESET_EXCLUSIONS_ON_IMAGE_CHANGE
 from .main_window import MainWindow
@@ -46,16 +46,21 @@ def create_application() -> QtWidgets.QApplication:
 def run() -> int:
     """Run the PySide6 GUI."""
     app = create_application()
+    from app.logic import OVERLAY_COLOR
     window = MainWindow(
         language=LANGUAGE,
         defaults=DEFAULTS.copy(),
         reset_exclusions=RESET_EXCLUSIONS_ON_IMAGE_CHANGE,
+        overlay_color=OVERLAY_COLOR,
     )
-    primary_screen = app.primaryScreen()
+
-    if primary_screen is not None:
+    # Respect saved geometry from QSettings; fall back to maximised on first launch
-        geometry = primary_screen.availableGeometry()
+    settings = QtCore.QSettings("ICRA", "MainWindow")
-        window.setGeometry(geometry)
+    if settings.value("geometry"):
-        window.showMaximized()
+        window.show()
     else:
+        primary_screen = app.primaryScreen()
+        if primary_screen is not None:
+            window.setGeometry(primary_screen.availableGeometry())
         window.showMaximized()
     return app.exec()

app/qt/image_processor.py

@@ -22,6 +22,20 @@ class Stats:
     total_keep: int = 0
     matches_excl: int = 0
     total_excl: int = 0
+    brightness_score: float = 0.0
+    prefer_dark: bool = False
+
+    @property
+    def effective_brightness(self) -> float:
+        """Returns inverted brightness when prefer_dark is on."""
+        return (100.0 - self.brightness_score) if self.prefer_dark else self.brightness_score
+
+    @property
+    def composite_score(self) -> float:
+        """Weighted composite: 35% match_all + 55% match_keep + 10% brightness."""
+        pct_all = (self.matches_all / self.total_all * 100) if self.total_all else 0.0
+        pct_keep = (self.matches_keep / self.total_keep * 100) if self.total_keep else 0.0
+        return 0.35 * pct_all + 0.55 * pct_keep + 0.10 * self.effective_brightness
 
     def summary(self, translate) -> str:
         if self.total_all == 0:
@@ -29,13 +43,15 @@ class Stats:
         with_pct = (self.matches_keep / self.total_keep * 100) if self.total_keep else 0.0
         without_pct = (self.matches_all / self.total_all * 100) if self.total_all else 0.0
         excluded_pct = (self.total_excl / self.total_all * 100) if self.total_all else 0.0
-        excluded_match_pct = (self.matches_excl / self.total_excl * 100) if self.total_excl else 0.0
+        brightness_label = translate("stats.darkness_label") if self.prefer_dark else translate("stats.brightness_label")
         return translate(
             "stats.summary",
+            score=self.composite_score,
             with_pct=with_pct,
             without_pct=without_pct,
+            brightness_label=brightness_label,
+            brightness=self.effective_brightness,
             excluded_pct=excluded_pct,
-            excluded_match_pct=excluded_match_pct,
         )
 
 
@@ -55,7 +71,8 @@ def _rgb_to_hsv_numpy(arr: np.ndarray) -> np.ndarray:
     v = cmax
 
     # Saturation
-    s = np.where(cmax > 0, delta / cmax, 0.0)
+    s = np.zeros_like(r)
+    np.divide(delta, cmax, out=s, where=cmax > 0)
 
     # Hue
     h = np.zeros_like(r)
@@ -80,6 +97,11 @@ class QtImageProcessor:
         self.current_index: int = -1
         self.stats = Stats()
 
+        # Overlay tint color
+        self.overlay_r = 255
+        self.overlay_g = 0
+        self.overlay_b = 0
+
         self.defaults: Dict[str, int] = {
             "hue_min": 0,
             "hue_max": 360,
@@ -98,6 +120,12 @@ class QtImageProcessor:
         self.exclude_shapes: list[dict[str, object]] = []
         self.reset_exclusions_on_switch: bool = False
 
+        # Mask caching
+        self._cached_mask: np.ndarray | None = None
+        self._cached_mask_size: Tuple[int, int] | None = None
+        self.exclude_ref_size: Tuple[int, int] | None = None
+        self.prefer_dark: bool = False
+
     def set_defaults(self, defaults: dict) -> None:
         for key in self.defaults:
             if key in defaults:
@@ -163,7 +191,7 @@ class QtImageProcessor:
         self.preview_img = self.orig_img.resize(size, Image.LANCZOS)
 
     def _rebuild_overlay(self) -> None:
-        """Build colour-match overlay using vectorized NumPy operations."""
+        """Build color-match overlay using vectorized NumPy operations."""
         if self.preview_img is None:
             self.overlay_img = None
             self.stats = Stats()
@@ -210,9 +238,15 @@ class QtImageProcessor:
         matches_excl = int(excl_match[visible].sum())
         total_excl   = int((visible & excl_mask).sum())
 
+        # Brightness: mean Value (0-100) of ALL non-excluded visible pixels
+        keep_visible = visible & ~excl_mask
+        brightness = float(val[keep_visible].mean()) if keep_visible.any() else 0.0
+
         # Build overlay image
         overlay_arr = np.zeros((base.height, base.width, 4), dtype=np.uint8)
-        overlay_arr[keep_match, 0] = 255
+        overlay_arr[keep_match, 0] = self.overlay_r
+        overlay_arr[keep_match, 1] = self.overlay_g
+        overlay_arr[keep_match, 2] = self.overlay_b
         overlay_arr[keep_match, 3] = int(self.alpha)
 
         self.overlay_img = Image.fromarray(overlay_arr, "RGBA")
@@ -223,6 +257,58 @@ class QtImageProcessor:
             total_keep=total_keep,
             matches_excl=matches_excl,
             total_excl=total_excl,
+            brightness_score=brightness,
+            prefer_dark=self.prefer_dark,
+        )
+
+    def get_stats_headless(self, image: Image.Image) -> Stats:
+        """Calculate color-match statistics natively without building UI elements or scaling."""
+        base = image.convert("RGBA")
+        arr = np.asarray(base, dtype=np.float32)
+
+        rgb = arr[..., :3] / 255.0
+        alpha_ch = arr[..., 3]                     
+
+        hsv = _rgb_to_hsv_numpy(rgb)               
+
+        hue = hsv[..., 0]
+        sat = hsv[..., 1]
+        val = hsv[..., 2]
+
+        hue_min = float(self.hue_min)
+        hue_max = float(self.hue_max)
+        if hue_min <= hue_max:
+            hue_ok = (hue >= hue_min) & (hue <= hue_max)
+        else:
+            hue_ok = (hue >= hue_min) | (hue <= hue_max)
+
+        match_mask = (
+            hue_ok
+            & (sat >= float(self.sat_min))
+            & (val >= float(self.val_min))
+            & (val <= float(self.val_max))
+            & (alpha_ch > 0)
+        )
+
+        excl_mask = self._build_exclusion_mask_numpy(base.size)  
+
+        keep_match = match_mask & ~excl_mask
+        excl_match = match_mask & excl_mask
+        visible = alpha_ch > 0
+
+        matches_keep_count = int(keep_match[visible].sum())
+        keep_visible = visible & ~excl_mask
+        brightness = float(val[keep_visible].mean()) if keep_visible.any() else 0.0
+
+        return Stats(
+            matches_all=int(match_mask[visible].sum()),
+            total_all=int(visible.sum()),
+            matches_keep=matches_keep_count,
+            total_keep=int((visible & ~excl_mask).sum()),
+            matches_excl=int(excl_match[visible].sum()),
+            total_excl=int((visible & excl_mask).sum()),
+            brightness_score=brightness,
+            prefer_dark=self.prefer_dark,
         )
 
     # helpers ----------------------------------------------------------------
@@ -239,7 +325,7 @@ class QtImageProcessor:
         val_ok = self.val_min <= v * 100.0 <= self.val_max
         return hue_ok and sat_ok and val_ok
 
-    def pick_colour(self, x: int, y: int) -> Tuple[float, float, float] | None:
+    def pick_color(self, x: int, y: int) -> Tuple[float, float, float] | None:
         """Return (hue°, sat%, val%) of the preview pixel at (x, y), or None."""
         if self.preview_img is None:
             return None
@@ -259,8 +345,10 @@ class QtImageProcessor:
         return self._to_pixmap(self.preview_img)
 
     def overlay_pixmap(self) -> QtGui.QPixmap:
-        if self.preview_img is None or self.overlay_img is None:
+        if self.preview_img is None:
             return QtGui.QPixmap()
+        if self.overlay_img is None:
+            return self.preview_pixmap()
         merged = Image.alpha_composite(self.preview_img.convert("RGBA"), self.overlay_img)
         return self._to_pixmap(merged)
 
@@ -274,7 +362,7 @@ class QtImageProcessor:
 
     # exclusions -------------------------------------------------------------
 
-    def set_exclusions(self, shapes: list[dict[str, object]]) -> None:
+    def set_exclusions(self, shapes: list[dict[str, object]], ref_size: Tuple[int, int] | None = None) -> None:
         copied: list[dict[str, object]] = []
         for shape in shapes:
             kind = shape.get("kind")
@@ -285,30 +373,69 @@ class QtImageProcessor:
                 pts = shape.get("points", [])
                 copied.append({"kind": "polygon", "points": [(int(x), int(y)) for x, y in pts]})
         self.exclude_shapes = copied
+        
+        if ref_size:
+            self.exclude_ref_size = ref_size
+        elif self.preview_img:
+            self.exclude_ref_size = self.preview_img.size
+        else:
+            self.exclude_ref_size = None
+            
+        self._cached_mask = None  # Invalidate cache
+        self._cached_mask_size = None
         self._rebuild_overlay()
 
     def _build_exclusion_mask(self, size: Tuple[int, int]) -> Image.Image | None:
         if not self.exclude_shapes:
             return None
+        
+        target_w, target_h = size
+        ref_w, ref_h = self.exclude_ref_size or size
+        sx = target_w / ref_w if ref_w > 0 else 1.0
+        sy = target_h / ref_h if ref_h > 0 else 1.0
+
         mask = Image.new("L", size, 0)
         draw = ImageDraw.Draw(mask)
         for shape in self.exclude_shapes:
             kind = shape.get("kind")
             if kind == "rect":
                 x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                draw.rectangle([x0, y0, x1, y1], fill=255)
+                draw.rectangle([x0 * sx, y0 * sy, x1 * sx, y1 * sy], fill=255)
             elif kind == "polygon":
                 points = shape.get("points", [])
                 if len(points) >= 3:
-                    draw.polygon(points, fill=255)
+                    scaled_pts = [(int(x * sx), int(y * sy)) for x, y in points]
+                    draw.polygon(scaled_pts, fill=255)
         return mask
 
+    def set_overlay_color(self, hex_code: str) -> None:
+        """Set the RGB channels for the match overlay from a hex string."""
+        if not hex_code.startswith("#") or len(hex_code) not in (7, 9):
+            return
+        try:
+            self.overlay_r = int(hex_code[1:3], 16)
+            self.overlay_g = int(hex_code[3:5], 16)
+            self.overlay_b = int(hex_code[5:7], 16)
+            if self.preview_img:
+                self._rebuild_overlay()
+        except ValueError:
+            pass
+
     def _build_exclusion_mask_numpy(self, size: Tuple[int, int]) -> np.ndarray:
         """Return a boolean (H, W) mask — True where pixels are excluded."""
+        if self._cached_mask is not None and self._cached_mask_size == size:
+            return self._cached_mask
+
         w, h = size
         if not self.exclude_shapes:
-            return np.zeros((h, w), dtype=bool)
+            mask = np.zeros((h, w), dtype=bool)
-        pil_mask = self._build_exclusion_mask(size)
+        else:
-        if pil_mask is None:
+            pil_mask = self._build_exclusion_mask(size)
-            return np.zeros((h, w), dtype=bool)
+            if pil_mask is None:
-        return np.asarray(pil_mask, dtype=bool)
+                mask = np.zeros((h, w), dtype=bool)
+            else:
+                mask = np.asarray(pil_mask, dtype=bool)
+
+        self._cached_mask = mask
+        self._cached_mask_size = size
+        return mask

app/qt/main_window.py

@@ -1,19 +1,29 @@
 """Main PySide6 window emulating the legacy Tk interface with translations and themes."""
 
 from __future__ import annotations
-
+import re
+import os
+import time
+import urllib.request
+import urllib.error
+import csv
+import json
+import concurrent.futures
 from pathlib import Path
 from typing import Callable, Dict, List, Tuple
 
+from PIL import Image
 from PySide6 import QtCore, QtGui, QtWidgets
 
 from app.i18n import I18nMixin
 from app.logic import SUPPORTED_IMAGE_EXTENSIONS
 from .image_processor import QtImageProcessor
+from .pattern_puller import PatternPullerDialog
 
-DEFAULT_COLOUR = "#763e92"
+DEFAULT_COLOR = "#763e92"
+DEFAULT_OVERLAY_HEX = "#ff0000"
 
-PRESET_COLOURS: List[Tuple[str, str]] = [
+PRESET_COLORS: List[Tuple[str, str]] = [
     ("palette.swatch.red", "#ff3b30"),
     ("palette.swatch.orange", "#ff9500"),
     ("palette.swatch.yellow", "#ffd60a"),
@@ -64,41 +74,8 @@ THEMES: Dict[str, Dict[str, str]] = {
 }
 
 
-class ToolbarButton(QtWidgets.QPushButton):
-    """Rounded toolbar button inspired by the legacy design."""
 
-    def __init__(self, icon_text: str, label: str, callback: Callable[[], None], parent: QtWidgets.QWidget | None = None):
+class ColorSwatch(QtWidgets.QPushButton):
-        text = f"{icon_text}  {label}"
-        super().__init__(text, parent)
-        self.setCursor(QtCore.Qt.PointingHandCursor)
-        self.setFixedHeight(32)
-        metrics = QtGui.QFontMetrics(self.font())
-        width = metrics.horizontalAdvance(text) + 28
-        self.setMinimumWidth(width)
-        self.clicked.connect(callback)
-
-    def apply_theme(self, colours: Dict[str, str]) -> None:
-        self.setStyleSheet(
-            f"""
-            QPushButton {{
-                padding: 8px 16px;
-                border-radius: 10px;
-                border: 1px solid {colours['border']};
-                background-color: rgba(255, 255, 255, 0.04);
-                color: {colours['text']};
-                font-weight: 600;
-            }}
-            QPushButton:hover {{
-                background-color: rgba(255, 255, 255, 0.12);
-            }}
-            QPushButton:pressed {{
-                background-color: rgba(255, 255, 255, 0.18);
-            }}
-            """
-        )
-
-
-class ColourSwatch(QtWidgets.QPushButton):
     """Clickable palette swatch."""
 
     def __init__(self, name: str, hex_code: str, callback: Callable[[str, str], None], parent: QtWidgets.QWidget | None = None):
@@ -108,10 +85,10 @@ class ColourSwatch(QtWidgets.QPushButton):
         self.callback = callback
         self.setCursor(QtCore.Qt.PointingHandCursor)
         self.setFixedSize(28, 28)
-        self._apply_colour(hex_code)
+        self._apply_color(hex_code)
         self.clicked.connect(lambda: callback(hex_code, self.name_key))
 
-    def _apply_colour(self, hex_code: str) -> None:
+    def _apply_color(self, hex_code: str) -> None:
         self.setStyleSheet(
             f"""
             QPushButton {{
@@ -125,16 +102,16 @@ class ColourSwatch(QtWidgets.QPushButton):
             """
         )
 
-    def apply_theme(self, colours: Dict[str, str]) -> None:
+    def apply_theme(self, colors: Dict[str, str]) -> None:
         self.setStyleSheet(
             f"""
             QPushButton {{
                 background-color: {self.hex_code};
-                border: 2px solid {colours['border']};
+                border: 2px solid {colors['border']};
                 border-radius: 6px;
             }}
             QPushButton:hover {{
-                border-color: {colours['accent']};
+                border-color: {colors['accent']};
             }}
             """
         )
@@ -194,22 +171,22 @@ class SliderControl(QtWidgets.QWidget):
         self.slider.blockSignals(False)
         self.value_edit.setText(str(value))
 
-    def apply_theme(self, colours: Dict[str, str]) -> None:
+    def apply_theme(self, colors: Dict[str, str]) -> None:
-        self.title_label.setStyleSheet(f"color: {colours['text_muted']}; font-weight: 500;")
+        self.title_label.setStyleSheet(f"color: {colors['text_muted']}; font-weight: 500;")
         self.value_edit.setStyleSheet(
-            f"color: {colours['text_dim']}; background: transparent; "
+            f"color: {colors['text_dim']}; background: transparent; "
-            f"border: 1px solid {colours['border']}; border-radius: 4px; padding: 0 2px;"
+            f"border: 1px solid {colors['border']}; border-radius: 4px; padding: 0 2px;"
         )
         self.slider.setStyleSheet(
             f"""
             QSlider::groove:horizontal {{
-                border: 1px solid {colours['border']};
+                border: 1px solid {colors['border']};
                 height: 6px;
                 background: rgba(255,255,255,0.14);
                 border-radius: 4px;
             }}
             QSlider::handle:horizontal {{
-                background: {colours['accent_secondary']};
+                background: {colors['accent_secondary']};
                 border: 1px solid rgba(255,255,255,0.2);
                 width: 14px;
                 margin: -5px 0;
@@ -271,8 +248,8 @@ class CanvasView(QtWidgets.QGraphicsView):
     def set_mode(self, mode: str) -> None:
         self.mode = mode
 
-    def set_accent(self, colour: str) -> None:
+    def set_accent(self, color: str) -> None:
-        self._accent = QtGui.QColor(colour)
+        self._accent = QtGui.QColor(color)
         self._redraw_shapes()
 
     def undo_last(self) -> None:
@@ -399,7 +376,7 @@ class CanvasView(QtWidgets.QGraphicsView):
 
 
 class OverlayCanvas(QtWidgets.QGraphicsView):
-    """Read-only QGraphicsView for displaying the colour-match overlay."""
+    """Read-only QGraphicsView for displaying the color-match overlay."""
 
     def __init__(self, parent: QtWidgets.QWidget | None = None) -> None:
         super().__init__(parent)
@@ -488,17 +465,17 @@ class TitleBar(QtWidgets.QWidget):
         )
         return btn
 
-    def apply_theme(self, colours: Dict[str, str]) -> None:
+    def apply_theme(self, colors: Dict[str, str]) -> None:
         palette = self.palette()
-        palette.setColor(QtGui.QPalette.Window, QtGui.QColor(colours["titlebar_bg"]))
+        palette.setColor(QtGui.QPalette.Window, QtGui.QColor(colors["titlebar_bg"]))
         self.setPalette(palette)
-        self.title_label.setStyleSheet(f"color: {colours['text']}; font-weight: 600;")
+        self.title_label.setStyleSheet(f"color: {colors['text']}; font-weight: 600;")
-        hover_bg = "#d0342c" if colours["titlebar_bg"] != "#e9ebf5" else "#e6675a"
+        hover_bg = "#d0342c" if colors["titlebar_bg"] != "#e9ebf5" else "#e6675a"
         self.close_btn.setStyleSheet(
             f"""
             QPushButton {{
                 background-color: transparent;
-                color: {colours['text']};
+                color: {colors['text']};
                 border: none;
                 padding: 4px 10px;
             }}
@@ -513,7 +490,7 @@ class TitleBar(QtWidgets.QWidget):
                 f"""
                 QPushButton {{
                     background-color: transparent;
-                    color: {colours['text']};
+                    color: {colors['text']};
                     border: none;
                     padding: 4px 10px;
                 }}
@@ -538,7 +515,7 @@ class TitleBar(QtWidgets.QWidget):
 class MainWindow(QtWidgets.QMainWindow, I18nMixin):
     """Main application window containing all controls."""
 
-    def __init__(self, language: str, defaults: dict, reset_exclusions: bool) -> None:
+    def __init__(self, language: str, defaults: dict, reset_exclusions: bool, overlay_color: str | None = None) -> None:
         super().__init__()
         self.init_i18n(language)
         self.setWindowTitle(self._t("app.title"))
@@ -560,12 +537,15 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self.processor = QtImageProcessor()
         self.processor.set_defaults(defaults)
         self.processor.reset_exclusions_on_switch = reset_exclusions
+        # Always use red for the overlay regardless of the target color
+        self.processor.set_overlay_color(DEFAULT_OVERLAY_HEX)
 
         self.content_layout = QtWidgets.QVBoxLayout(self.content)
-        self.content_layout.setContentsMargins(24, 24, 24, 24)
+        self.content_layout.setContentsMargins(24, 0, 24, 24)
         self.content_layout.setSpacing(18)
 
-        self.content_layout.addLayout(self._build_toolbar())
+        self.content_layout.addWidget(self._build_menu_bar())
+        
         self.content_layout.addLayout(self._build_palette())
         self.content_layout.addLayout(self._build_sliders())
         self.content_layout.addWidget(self._build_previews(), 1)
@@ -576,7 +556,7 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
 
         self._is_maximised = False
         self._current_image_path: Path | None = None
-        self._current_colour = DEFAULT_COLOUR
+        self._current_color = DEFAULT_COLOR
         self._toolbar_actions: Dict[str, Callable[[], None]] = {}
         self._register_default_actions()
 
@@ -587,7 +567,7 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self.image_view.pixel_clicked.connect(self._on_pixel_picked)
 
         self._sync_sliders_from_processor()
-        self._update_colour_display(DEFAULT_COLOUR, self._t("palette.current"))
+        self._update_color_display(DEFAULT_COLOR, self._t("palette.current"))
 
         self.current_theme = "dark"
         self._apply_theme(self.current_theme)
@@ -598,6 +578,12 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         # Keyboard shortcuts
         self._setup_shortcuts()
 
+        # Slider debounce timer
+        self._slider_timer = QtCore.QTimer(self)
+        self._slider_timer.setSingleShot(True)
+        self._slider_timer.setInterval(80)
+        self._slider_timer.timeout.connect(self._refresh_overlay_only)
+
         # Restore window geometry
         self._settings = QtCore.QSettings("ICRA", "MainWindow")
         geometry = self._settings.value("geometry")
@@ -626,33 +612,55 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
 
     # UI builders ------------------------------------------------------------
 
-    def _build_toolbar(self) -> QtWidgets.QHBoxLayout:
+    def _build_menu_bar(self) -> QtWidgets.QMenuBar:
-        layout = QtWidgets.QHBoxLayout()
+        self.menu_bar = QtWidgets.QMenuBar(self)
-        layout.setSpacing(12)
 
-        buttons = [
+        # File Menu
-            ("open_image", "🖼", "toolbar.open_image"),
+        file_menu = self.menu_bar.addMenu(self._t("menu.file"))
-            ("open_folder", "📂", "toolbar.open_folder"),
+        file_menu.addAction("🖼 " + self._t("toolbar.open_image"), lambda: self._invoke_action("open_image"), "Ctrl+O")
-            ("choose_color", "🎨", "toolbar.choose_color"),
+        file_menu.addSeparator()
-            ("pick_from_image", "🖱", "toolbar.pick_from_image"),
+        file_menu.addAction("📂 " + self._t("toolbar.open_folder"), lambda: self._invoke_action("open_folder"), "Ctrl+Shift+O")
-            ("save_overlay", "💾", "toolbar.save_overlay"),
+        file_menu.addAction("📊 " + self._t("toolbar.export_folder"), lambda: self._invoke_action("export_folder"))
-            ("toggle_free_draw", "△", "toolbar.toggle_free_draw"),
+        file_menu.addSeparator()
-            ("clear_excludes", "🧹", "toolbar.clear_excludes"),
+        file_menu.addAction("📤 " + self._t("toolbar.export_settings"), lambda: self._invoke_action("export_settings"), "Ctrl+E")
-            ("undo_exclude", "↩", "toolbar.undo_exclude"),
+        file_menu.addAction("📥 " + self._t("toolbar.import_settings"), lambda: self._invoke_action("import_settings"), "Ctrl+I")
-            ("reset_sliders", "🔄", "toolbar.reset_sliders"),
+        file_menu.addSeparator()
-            ("toggle_theme", "🌓", "toolbar.toggle_theme"),
+        file_menu.addAction("💾 " + self._t("toolbar.save_overlay"), lambda: self._invoke_action("save_overlay"), "Ctrl+S")
-        ]
-        self._toolbar_buttons: Dict[str, ToolbarButton] = {}
-        for key, icon_txt, text_key in buttons:
-            label = self._t(text_key)
-            button = ToolbarButton(icon_txt, label, lambda _checked=False, k=key: self._invoke_action(k))
-            layout.addWidget(button)
-            self._toolbar_buttons[key] = button
 
-        layout.addStretch(1)
+        # Edit Menu
+        edit_menu = self.menu_bar.addMenu(self._t("menu.edit"))
+        edit_menu.addAction("↩ " + self._t("toolbar.undo_exclude"), lambda: self._invoke_action("undo_exclude"), "Ctrl+Z")
+        edit_menu.addAction("🧹 " + self._t("toolbar.clear_excludes"), lambda: self._invoke_action("clear_excludes"))
+        edit_menu.addSeparator()
+        edit_menu.addAction("🔄 " + self._t("toolbar.reset_sliders"), lambda: self._invoke_action("reset_sliders"), "Ctrl+R")
+
+        # Tools Menu
+        tools_menu = self.menu_bar.addMenu(self._t("menu.tools"))
+        tools_menu.addAction("🎨 " + self._t("toolbar.choose_color"), lambda: self._invoke_action("choose_color"))
+        tools_menu.addAction("🖱 " + self._t("toolbar.pick_from_image"), lambda: self._invoke_action("pick_from_image"))
+        self.free_draw_action = QtGui.QAction("△ " + self._t("toolbar.toggle_free_draw"), self)
+        self.free_draw_action.setCheckable(True)
+        self.free_draw_action.setChecked(False)
+        self.free_draw_action.triggered.connect(lambda: self._invoke_action("toggle_free_draw"))
+        tools_menu.addAction(self.free_draw_action)
+        tools_menu.addSeparator()
+        tools_menu.addAction("📥 " + self._t("toolbar.pull_patterns"), lambda: self._invoke_action("pull_patterns"))
+
+        # View Menu
+        view_menu = self.menu_bar.addMenu(self._t("menu.view"))
+        view_menu.addAction("🌓 " + self._t("toolbar.toggle_theme"), lambda: self._invoke_action("toggle_theme"))
+        self.prefer_dark_action = QtGui.QAction("🌑 " + self._t("toolbar.prefer_dark"), self)
+        self.prefer_dark_action.setCheckable(True)
+        self.prefer_dark_action.setChecked(False)
+        self.prefer_dark_action.triggered.connect(lambda: self._invoke_action("toggle_prefer_dark"))
+        view_menu.addAction(self.prefer_dark_action)
+        view_menu.addSeparator()
+        view_menu.addAction("📁 " + self._t("toolbar.open_app_folder"), lambda: self._invoke_action("open_app_folder"))
+
+        # Status label logic remains but moved to palette layout or kept minimal
+        # We will add it to the palette layout so that it stays on top
         self.status_label = QtWidgets.QLabel(self._t("status.no_file"))
-        layout.addWidget(self.status_label, 0, QtCore.Qt.AlignRight)
+        return self.menu_bar
-        return layout
 
     def _build_palette(self) -> QtWidgets.QHBoxLayout:
         layout = QtWidgets.QHBoxLayout()
@@ -664,13 +672,13 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self.current_label = QtWidgets.QLabel(self._t("palette.current"))
         current_group.addWidget(self.current_label)
 
-        self.current_colour_swatch = QtWidgets.QLabel()
+        self.current_color_swatch = QtWidgets.QLabel()
-        self.current_colour_swatch.setFixedSize(28, 28)
+        self.current_color_swatch.setFixedSize(28, 28)
-        self.current_colour_swatch.setStyleSheet(f"background-color: {DEFAULT_COLOUR}; border-radius: 6px;")
+        self.current_color_swatch.setStyleSheet(f"background-color: {DEFAULT_COLOR}; border-radius: 6px;")
-        current_group.addWidget(self.current_colour_swatch)
+        current_group.addWidget(self.current_color_swatch)
 
-        self.current_colour_label = QtWidgets.QLabel(f"({DEFAULT_COLOUR})")
+        self.current_color_label = QtWidgets.QLabel(f"({DEFAULT_COLOR})")
-        current_group.addWidget(self.current_colour_label)
+        current_group.addWidget(self.current_color_label)
         layout.addLayout(current_group)
 
         self.more_label = QtWidgets.QLabel(self._t("palette.more"))
@@ -678,13 +686,15 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
 
         swatch_container = QtWidgets.QHBoxLayout()
         swatch_container.setSpacing(8)
-        self.swatch_buttons: List[ColourSwatch] = []
+        self.swatch_buttons: List[ColorSwatch] = []
-        for name_key, hex_code in PRESET_COLOURS:
+        for name_key, hex_code in PRESET_COLORS:
-            swatch = ColourSwatch(self._t(name_key), hex_code, self._update_colour_display)
+            swatch = ColorSwatch(self._t(name_key), hex_code, self._update_color_display)
             swatch_container.addWidget(swatch)
             self.swatch_buttons.append(swatch)
         layout.addLayout(swatch_container)
+        
         layout.addStretch(1)
+        layout.addWidget(self.status_label, 0, QtCore.Qt.AlignRight)
         return layout
 
     def _build_sliders(self) -> QtWidgets.QHBoxLayout:
@@ -739,9 +749,38 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         layout.setSpacing(8)
         layout.setContentsMargins(0, 0, 0, 0)
 
-        self.filename_label = QtWidgets.QLabel("—")
+        # Status row container
-        self.filename_label.setAlignment(QtCore.Qt.AlignCenter)
+        status_row_layout = QtWidgets.QHBoxLayout()
-        layout.addWidget(self.filename_label)
+        status_row_layout.setSpacing(4)
+        status_row_layout.setAlignment(QtCore.Qt.AlignCenter)
+        
+        self.filename_prefix_label = QtWidgets.QLabel(self._t("status.loaded", name="", dimensions="", position="").split("{name}")[0])
+        self.filename_prefix_label.setStyleSheet("color: " + THEMES["dark"]["text_muted"] + "; font-weight: 500;")
+        status_row_layout.addWidget(self.filename_prefix_label)
+
+        self.pattern_input = QtWidgets.QLineEdit("—")
+        self.pattern_input.setAlignment(QtCore.Qt.AlignCenter)
+        self.pattern_input.setFixedWidth(100)
+        self.pattern_input.setStyleSheet(
+            "QLineEdit {"
+            "  background: rgba(255, 255, 255, 0.05);"
+            "  border: 1px solid rgba(255, 255, 255, 0.1);"
+            "  border-radius: 4px;"
+            "  color: " + THEMES["dark"]["text"] + ";"
+            "  font-weight: 600;"
+            "}"
+            "QLineEdit:focus {"
+            "  border: 1px solid " + THEMES["dark"]["accent"] + ";"
+            "}"
+        )
+        self.pattern_input.returnPressed.connect(self._jump_to_pattern)
+        status_row_layout.addWidget(self.pattern_input)
+        
+        self.filename_suffix_label = QtWidgets.QLabel("")
+        self.filename_suffix_label.setStyleSheet("color: " + THEMES["dark"]["text"] + "; font-weight: 600;")
+        status_row_layout.addWidget(self.filename_suffix_label)
+        
+        layout.addLayout(status_row_layout)
 
         self.ratio_label = QtWidgets.QLabel(self._t("stats.placeholder"))
         self.ratio_label.setAlignment(QtCore.Qt.AlignCenter)
@@ -754,16 +793,22 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self._toolbar_actions = {
             "open_image": self.open_image,
             "open_folder": self.open_folder,
-            "choose_color": self.choose_colour,
+            "export_folder": self.export_folder,
+            "choose_color": self.choose_color,
             "pick_from_image": self.pick_from_image,
             "save_overlay": self.save_overlay,
+            "export_settings": self.export_settings,
+            "import_settings": self.import_settings,
             "toggle_free_draw": self.toggle_free_draw,
             "clear_excludes": self.clear_exclusions,
             "undo_exclude": self.undo_exclusion,
             "reset_sliders": self._reset_sliders,
             "toggle_theme": self.toggle_theme,
+            "toggle_prefer_dark": self.toggle_prefer_dark,
+            "open_app_folder": self.open_app_folder,
             "show_previous_image": self.show_previous_image,
             "show_next_image": self.show_next_image,
+            "pull_patterns": self.open_pattern_puller,
         }
 
     def _invoke_action(self, key: str) -> None:
@@ -771,11 +816,47 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         if action:
             action()
 
+    def _jump_to_pattern(self) -> None:
+        if not self.processor.preview_paths:
+            return
+            
+        target_text = self.pattern_input.text().strip()
+        if not target_text:
+            # Restore current text if empty
+            if self._current_image_path:
+                self.pattern_input.setText(self._current_image_path.stem)
+            return
+            
+        # Try to find exactly this name or stem
+        target_stem_lower = target_text.lower()
+        found_idx = -1
+        
+        for i, path in enumerate(self.processor.preview_paths):
+            if path.stem.lower() == target_stem_lower or path.name.lower() == target_stem_lower:
+                found_idx = i
+                break
+                
+        if found_idx != -1:
+            # Found it, jump!
+            self.processor.current_index = found_idx
+            try:
+                loaded_path = self.processor._load_image_at_current()
+                self._current_image_path = loaded_path
+                self._refresh_views()
+            except Exception as e:
+                QtWidgets.QMessageBox.warning(self, self._t("dialog.error_title"), str(e))
+        else:
+            # Not found, just restore text
+            if self._current_image_path:
+                self.pattern_input.setText(self._current_image_path.stem)
+            QtWidgets.QMessageBox.information(self, self._t("dialog.info_title"), f"Pattern '{target_text}' not found in current folder.")
+
     # Image handling ---------------------------------------------------------
 
     def open_image(self) -> None:
         filters = "Images (*.png *.jpg *.jpeg *.bmp *.webp)"
-        path_str, _ = QtWidgets.QFileDialog.getOpenFileName(self, self._t("dialog.open_image_title"), "", filters)
+        default_dir = str(Path("images").absolute()) if Path("images").exists() else ""
+        path_str, _ = QtWidgets.QFileDialog.getOpenFileName(self, self._t("dialog.open_image_title"), default_dir, filters)
         if not path_str:
             return
         path = Path(path_str)
@@ -791,7 +872,8 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self._refresh_views()
 
     def open_folder(self) -> None:
-        directory = QtWidgets.QFileDialog.getExistingDirectory(self, self._t("dialog.open_folder_title"))
+        default_dir = str(Path("images").absolute()) if Path("images").exists() else ""
+        directory = QtWidgets.QFileDialog.getExistingDirectory(self, self._t("dialog.open_folder_title"), default_dir)
         if not directory:
             return
         folder = Path(directory)
@@ -810,6 +892,185 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self._current_image_path = loaded_path
         self._refresh_views()
 
+    def export_settings(self) -> None:
+        item_name = ""
+        if self._current_image_path:
+            # Try to get folder name first, otherwise file name
+            if self._current_image_path.parent.name and self._current_image_path.parent.name != "images":
+                item_name = self._current_image_path.parent.name
+            else:
+                item_name = self._current_image_path.stem
+        
+        default_filename = f"icra_settings_{item_name}.json" if item_name else "icra_settings.json"
+        
+        default_dir = str(Path("images").absolute()) if Path("images").exists() else ""
+        path_str, _ = QtWidgets.QFileDialog.getSaveFileName(
+            self, 
+            self._t("dialog.export_settings_title"),
+            str(Path(default_dir) / default_filename),
+            self._t("dialog.json_filter")
+        )
+        if not path_str:
+            return
+            
+        settings = {
+            "hue_min": self.processor.hue_min,
+            "hue_max": self.processor.hue_max,
+            "sat_min": self.processor.sat_min,
+            "val_min": self.processor.val_min,
+            "val_max": self.processor.val_max,
+            "alpha": self.processor.alpha,
+            "current_color": self._current_color,
+            "exclude_ref_size": self.processor.exclude_ref_size,
+            "shapes": self.image_view.shapes
+        }
+        
+        try:
+            with open(path_str, "w", encoding="utf-8") as f:
+                json.dump(settings, f, indent=4)
+            self.status_label.setText(self._t("status.settings_exported", path=Path(path_str).name))
+        except Exception as e:
+            QtWidgets.QMessageBox.warning(self, self._t("dialog.error_title"), str(e))
+
+    def import_settings(self) -> None:
+        default_dir = str(Path("images").absolute()) if Path("images").exists() else ""
+        path_str, _ = QtWidgets.QFileDialog.getOpenFileName(
+            self,
+            self._t("dialog.import_settings_title"),
+            default_dir,
+            self._t("dialog.json_filter")
+        )
+        if not path_str:
+            return
+            
+        try:
+            with open(path_str, "r", encoding="utf-8") as f:
+                settings = json.load(f)
+            
+            # 1. Apply color (UI ONLY)
+            if "current_color" in settings:
+                self._current_color = settings["current_color"]
+                # Specifically NOT setting processor color to keep it RED
+                self._update_color_display(self._current_color, self._t("palette.current"))
+            
+            # 2. Apply slider values
+            keys = ["hue_min", "hue_max", "sat_min", "val_min", "val_max", "alpha"]
+            for key in keys:
+                if key in settings:
+                    setattr(self.processor, key, settings[key])
+            
+            # 3. Apply shapes and reference size
+            ref_size = None
+            if "exclude_ref_size" in settings and settings["exclude_ref_size"]:
+                ref_size = tuple(settings["exclude_ref_size"])
+            
+            if "shapes" in settings:
+                self.image_view.set_shapes(settings["shapes"])
+                self.processor.set_exclusions(settings["shapes"], ref_size=ref_size)
+            else:
+                # Force rebuild even if no shapes to pick up sliders/color
+                if self.processor.preview_img:
+                    self.processor._rebuild_overlay()
+            
+            self._sync_sliders_from_processor()
+            self._refresh_views()
+            self.status_label.setText(self._t("status.settings_imported"))
+            
+        except Exception as e:
+            QtWidgets.QMessageBox.warning(self, self._t("dialog.error_title"), str(e))
+
+    def export_folder(self) -> None:
+        if not self.processor.preview_paths:
+            QtWidgets.QMessageBox.information(self, self._t("dialog.info_title"), self._t("dialog.no_image_loaded"))
+            return
+
+        folder_path = self.processor.preview_paths[0].parent
+        default_filename = f"icra_stats_{folder_path.name}.csv"
+        
+        csv_path, _ = QtWidgets.QFileDialog.getSaveFileName(
+            self,
+            self._t("dialog.export_stats_title"),
+            str(folder_path / default_filename),
+            self._t("dialog.csv_filter")
+        )
+        if not csv_path:
+            return
+
+        total = len(self.processor.preview_paths)
+        
+        # Hardcoded to EU format as requested: ; delimiter, , decimal
+        delimiter = ";"
+        decimal = ","
+
+        brightness_col = "Darkness Score" if self.processor.prefer_dark else "Brightness Score"
+        headers = [
+            "Filename",
+            "Color",
+            "Matching Pixels",
+            "Matching Pixels w/ Exclusions",
+            "Excluded Pixels",
+            brightness_col,
+            "Composite Score"
+        ]
+        rows = [headers]
+
+        def process_image(img_path):
+            try:
+                img = Image.open(img_path)
+                s = self.processor.get_stats_headless(img)
+                
+                pct_all = (s.matches_all / s.total_all * 100) if s.total_all else 0.0
+                pct_keep = (s.matches_keep / s.total_keep * 100) if s.total_keep else 0.0
+                pct_excl = (s.total_excl / s.total_all * 100) if s.total_all else 0.0
+
+                pct_all_str = f"{pct_all:.2f}".replace(".", decimal)
+                pct_keep_str = f"{pct_keep:.2f}".replace(".", decimal)
+                pct_excl_str = f"{pct_excl:.2f}".replace(".", decimal)
+                brightness_str = f"{s.effective_brightness:.2f}".replace(".", decimal)
+                composite_str = f"{s.composite_score:.2f}".replace(".", decimal)
+
+                img.close()
+                return [
+                    img_path.name,
+                    self._current_color,
+                    pct_all_str,
+                    pct_keep_str,
+                    pct_excl_str,
+                    brightness_str,
+                    composite_str
+                ]
+            except Exception:
+                return [img_path.name, self._current_color, "Error", "Error", "Error", "Error", "Error"]
+
+        results = [None] * total
+        with concurrent.futures.ThreadPoolExecutor() as executor:
+            future_to_idx = {executor.submit(process_image, p): i for i, p in enumerate(self.processor.preview_paths)}
+            done_count = 0
+            for future in concurrent.futures.as_completed(future_to_idx):
+                idx = future_to_idx[future]
+                results[idx] = future.result()
+                done_count += 1
+                if done_count % 10 == 0 or done_count == total:
+                    self.status_label.setText(self._t("status.exporting", current=str(done_count), total=str(total)))
+                    QtWidgets.QApplication.processEvents()
+        
+        rows.extend(results)
+
+        # Compute max width per column for alignment, plus extra space so it's not cramped
+        col_widths = [max(len(str(item)) for item in col) + 4 for col in zip(*rows)]
+
+        # Excel on Windows prefers utf-8-sig (with BOM) to identify the encoding correctly.
+        with open(csv_path, mode="w", newline="", encoding="utf-8-sig") as f:
+            for row in rows:
+                # Manual formatting to support both alignment for text editors AND valid CSV for Excel.
+                # We pad the strings but keep the delimiter clean.
+                padded_cells = [f"{str(item):>{width}}" for item, width in zip(row, col_widths)]
+                f.write(delimiter.join(padded_cells) + "\n")
+
+        # Restore overlay state for currently viewed image
+        self.processor._rebuild_overlay()
+        self.status_label.setText(self._t("status.export_done", path=csv_path))
+
     def show_previous_image(self) -> None:
         if not self.processor.preview_paths:
             QtWidgets.QMessageBox.information(self, self._t("dialog.info_title"), self._t("dialog.no_image_loaded"))
@@ -838,17 +1099,19 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
 
     # Helpers ----------------------------------------------------------------
 
-    def _update_colour_display(self, hex_code: str, label: str) -> None:
+    def _update_color_display(self, hex_code: str, label: str) -> None:
-        self._current_colour = hex_code
+        self._current_color = hex_code
-        self.current_colour_swatch.setStyleSheet(f"background-color: {hex_code}; border-radius: 6px;")
+        self.current_color_swatch.setStyleSheet(f"background-color: {hex_code}; border-radius: 6px;")
-        self.current_colour_label.setText(f"({hex_code})")
+        self.current_color_label.setText(f"({hex_code})")
-        self.status_label.setText(f"{label}: {hex_code}")
+        # Do NOT call self.processor.set_overlay_color here to keep overlay RED
+        if label:
+            self.status_label.setText(f"{label}: {hex_code}")
 
     def _on_slider_change(self, key: str, value: int) -> None:
         self.processor.set_threshold(key, value)
         label = self._slider_title(key)
         self.status_label.setText(f"{label}: {value}")
-        self._refresh_overlay_only()
+        self._slider_timer.start()
 
     def _reset_sliders(self) -> None:
         for _, attr, _, _ in SLIDER_SPECS:
@@ -904,7 +1167,7 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self.status_label.setText(self._t("status.pick_mode_ended"))
 
     def _on_pixel_picked(self, x: int, y: int) -> None:
-        result = self.processor.pick_colour(x, y)
+        result = self.processor.pick_color(x, y)
         if result is None:
             self._exit_pick_mode()
             return
@@ -927,21 +1190,24 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
                 ctrl.set_value(value)
             self.processor.set_threshold(attr, value)
 
-        # Update colour swatch to the picked pixel colour
+        # Update color swatch to the picked pixel color
         h_norm = hue / 360.0
         s_norm = sat / 100.0
         v_norm = val / 100.0
         import colorsys
         r, g, b = colorsys.hsv_to_rgb(h_norm, s_norm, v_norm)
         hex_code = "#{:02x}{:02x}{:02x}".format(int(r * 255), int(g * 255), int(b * 255))
-        self._update_colour_display(hex_code, "")
+        self._update_color_display(hex_code, "")
 
         self.status_label.setText(
             self._t("status.pick_mode_from_image", hue=hue, saturation=sat, value=val)
         )
-        self._exit_pick_mode()
         self._refresh_overlay_only()
 
+    def open_pattern_puller(self) -> None:
+        dialog = PatternPullerDialog(self.language, parent=self)
+        dialog.exec()
+
     # Drag-and-drop ----------------------------------------------------------
 
     def dragEnterEvent(self, event: QtGui.QDragEnterEvent) -> None:
@@ -988,12 +1254,12 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self._settings.setValue("geometry", self.saveGeometry())
         super().closeEvent(event)
 
-    def choose_colour(self) -> None:
+    def choose_color(self) -> None:
-        colour = QtWidgets.QColorDialog.getColor(parent=self, title=self._t("dialog.choose_colour_title"))
+        color = QtWidgets.QColorDialog.getColor(parent=self, title=self._t("dialog.choose_color_title"))
-        if not colour.isValid():
+        if not color.isValid():
             return
-        hex_code = colour.name()
+        hex_code = color.name()
-        self._update_colour_display(hex_code, self._t("dialog.choose_colour_title"))
+        self._update_color_display(hex_code, self._t("dialog.choose_color_title"))
 
     def save_overlay(self) -> None:
         pixmap = self.processor.overlay_pixmap()
@@ -1016,9 +1282,17 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
     def toggle_free_draw(self) -> None:
         self.exclude_mode = "free" if self.exclude_mode == "rect" else "rect"
         self.image_view.set_mode(self.exclude_mode)
+        self.free_draw_action.setChecked(self.exclude_mode == "free")
         message_key = "status.free_draw_enabled" if self.exclude_mode == "free" else "status.free_draw_disabled"
         self.status_label.setText(self._t(message_key))
 
+    def toggle_prefer_dark(self) -> None:
+        self.processor.prefer_dark = not self.processor.prefer_dark
+        self.prefer_dark_action.setChecked(self.processor.prefer_dark)
+        if self.processor.preview_img:
+            self.processor._rebuild_overlay()
+            self._refresh_overlay_only()
+
     def clear_exclusions(self) -> None:
         self.image_view.clear_shapes()
         self.processor.set_exclusions([])
@@ -1033,35 +1307,84 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         self.current_theme = "light" if self.current_theme == "dark" else "dark"
         self._apply_theme(self.current_theme)
 
+    def open_app_folder(self) -> None:
+        path = os.getcwd()
+        QtGui.QDesktopServices.openUrl(QtCore.QUrl.fromLocalFile(path))
+
     def _apply_theme(self, mode: str) -> None:
-        colours = THEMES[mode]
+        colors = THEMES[mode]
-        self.content.setStyleSheet(f"background-color: {colours['window_bg']};")
+        self.content.setStyleSheet(f"background-color: {colors['window_bg']};")
         self.image_view.setStyleSheet(
-            f"background-color: {colours['panel_bg']}; border: 1px solid {colours['border']}; border-radius: 12px;"
+            f"background-color: {colors['panel_bg']}; border: 1px solid {colors['border']}; border-radius: 12px;"
         )
-        self.image_view.set_accent(colours["highlight"])
+        self.image_view.set_accent(colors["highlight"])
         self.overlay_view.setStyleSheet(
-            f"background-color: {colours['panel_bg']}; border: 1px solid {colours['border']}; border-radius: 12px;"
+            f"background-color: {colors['panel_bg']}; border: 1px solid {colors['border']}; border-radius: 12px;"
         )
 
-        self.status_label.setStyleSheet(f"color: {colours['text_muted']}; font-weight: 500;")
+        self.status_label.setStyleSheet(f"color: {colors['text_muted']}; font-weight: 500;")
-        self.current_label.setStyleSheet(f"color: {colours['text_muted']}; font-weight: 500;")
+        self.current_label.setStyleSheet(f"color: {colors['text_muted']}; font-weight: 500;")
-        self.current_colour_label.setStyleSheet(f"color: {colours['text_dim']};")
+        self.current_color_label.setStyleSheet(f"color: {colors['text_dim']};")
-        self.more_label.setStyleSheet(f"color: {colours['text_muted']}; font-weight: 500;")
+        self.more_label.setStyleSheet(f"color: {colors['text_muted']}; font-weight: 500;")
-        self.filename_label.setStyleSheet(f"color: {colours['text']}; font-weight: 600;")
+        self.filename_prefix_label.setStyleSheet(f"color: {colors['text_muted']}; font-weight: 500;")
-        self.ratio_label.setStyleSheet(f"color: {colours['highlight']}; font-weight: 600;")
+        self.filename_suffix_label.setStyleSheet(f"color: {colors['text']}; font-weight: 600;")
+        self.pattern_input.setStyleSheet(
+            f"QLineEdit {{"
+            f"  background: rgba(255, 255, 255, 0.05);"
+            f"  border: 1px solid {colors['border']};"
+            f"  border-radius: 4px;"
+            f"  color: {colors['text']};"
+            f"  font-weight: 600;"
+            f"}}"
+            f"QLineEdit:focus {{"
+            f"  border: 1px solid {colors['accent']};"
+            f"}}"
+        )
+        self.ratio_label.setStyleSheet(f"color: {colors['highlight']}; font-weight: 600;")
+
+        # Style MenuBar
+        self.menu_bar.setStyleSheet(
+            f"""
+            QMenuBar {{
+                background-color: {colors['window_bg']};
+                color: {colors['text']};
+                font-weight: 500;
+                font-size: 13px;
+                border-bottom: 1px solid {colors['border']};
+            }}
+            QMenuBar::item {{
+                spacing: 8px;
+                padding: 6px 12px;
+                background: transparent;
+                border-radius: 4px;
+            }}
+            QMenuBar::item:selected {{
+                background: rgba(128, 128, 128, 0.2);
+            }}
+            QMenu {{
+                background-color: {colors['panel_bg']};
+                color: {colors['text']};
+                border: 1px solid {colors['border']};
+            }}
+            QMenu::item {{
+                padding: 6px 24px;
+            }}
+            QMenu::item:selected {{
+                background-color: {colors['highlight']};
+                color: #ffffff;
+            }}
+            """
+        )
 
-        for button in self._toolbar_buttons.values():
-            button.apply_theme(colours)
         for swatch in self.swatch_buttons:
-            swatch.apply_theme(colours)
+            swatch.apply_theme(colors)
         for control in self._slider_controls.values():
-            control.apply_theme(colours)
+            control.apply_theme(colors)
 
         self._style_nav_button(self.prev_button)
         self._style_nav_button(self.next_button)
 
-        self.title_bar.apply_theme(colours)
+        self.title_bar.apply_theme(colors)
 
     def _sync_sliders_from_processor(self) -> None:
         for _, attr, _, _ in SLIDER_SPECS:
@@ -1076,11 +1399,11 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
         return key
 
     def _style_nav_button(self, button: QtWidgets.QToolButton) -> None:
-        colours = THEMES[self.current_theme]
+        colors = THEMES[self.current_theme]
         button.setStyleSheet(
-            f"QToolButton {{ border-radius: 19px; background-color: {colours['panel_bg']}; "
+            f"QToolButton {{ border-radius: 19px; background-color: {colors['panel_bg']}; "
-            f"border: 1px solid {colours['border']}; color: {colours['text']}; }}"
+            f"border: 1px solid {colors['border']}; color: {colors['text']}; }}"
-            f"QToolButton:hover {{ background-color: {colours['accent_secondary']}; color: white; }}"
+            f"QToolButton:hover {{ background-color: {colors['accent_secondary']}; color: white; }}"
         )
         button.setIconSize(QtCore.QSize(20, 20))
         if button is getattr(self, "prev_button", None):
@@ -1106,12 +1429,22 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
             total = len(self.processor.preview_paths)
             position = f" [{self.processor.current_index + 1}/{total}]" if total > 1 else ""
             dimensions = f"{width}×{height}"
+            
+            # Status label for top right layout
             self.status_label.setText(
                 self._t("status.loaded", name=self._current_image_path.name, dimensions=dimensions, position=position)
             )
-            self.filename_label.setText(
+            
-                self._t("status.filename_label", name=self._current_image_path.name, dimensions=dimensions, position=position)
+            # Pattern input
-            )
+            self.pattern_input.setText(self._current_image_path.stem)
+            
+            # Update suffix label
+            suffix_text = f"{self._current_image_path.suffix} — {dimensions}{position}"
+            self.filename_suffix_label.setText(suffix_text)
+            
+            # Update prefix translation correctly
+            prefix = self._t("status.loaded", name="X", dimensions="Y", position="Z").split("X")[0]
+            self.filename_prefix_label.setText(prefix)
         self.ratio_label.setText(self.processor.stats.summary(self._t))
 
     def _refresh_overlay_only(self) -> None:
@@ -1133,8 +1466,8 @@ class MainWindow(QtWidgets.QMainWindow, I18nMixin):
             return pixmap
         result = QtGui.QPixmap(pixmap)
         painter = QtGui.QPainter(result)
-        colour = QtGui.QColor(THEMES[self.current_theme]["highlight"])
+        color = QtGui.QColor(THEMES[self.current_theme]["highlight"])
-        pen = QtGui.QPen(colour)
+        pen = QtGui.QPen(color)
         pen.setWidth(3)
         pen.setCosmetic(True)
         pen.setCapStyle(QtCore.Qt.RoundCap)

app/qt/pattern_puller.py

@@ -0,0 +1,177 @@
+"""Dialog and worker thread for batch downloading CSGOSkins patterns."""
+
+from __future__ import annotations
+
+import re
+import time
+import urllib.request
+import urllib.error
+from pathlib import Path
+
+from PySide6 import QtCore, QtWidgets, QtGui
+
+from app.i18n import I18nMixin
+import concurrent.futures
+
+class PatternDownloadWorker(QtCore.QThread):
+    progress = QtCore.Signal(int, int)  # current, total
+    status = QtCore.Signal(str)         # textual update
+    finished = QtCore.Signal(bool)      # True if Success, False if Interrupted/Error
+    error = QtCore.Signal(str)          # Error message
+
+    def __init__(self, slug: str, save_dir: Path, parent: QtCore.QObject | None = None) -> None:
+        super().__init__(parent)
+        self.slug = slug
+        self.save_dir = save_dir
+        self.total_seeds = 1000
+
+    def _download_seed(self, seed: int) -> tuple[bool, str | None]:
+        url = f"https://cdn.csgoskins.gg/public/images/patterns/v1/{self.slug}/{seed}.png"
+        filename = self.save_dir / f"{seed}.png"
+
+        if filename.exists():
+            return True, None
+
+        try:
+            req = urllib.request.Request(url, headers={'User-Agent': 'Mozilla/5.0 ICRA/1.0'})
+            with urllib.request.urlopen(req, timeout=10) as response:
+                with open(filename, 'wb') as f:
+                    f.write(response.read())
+            return True, None
+        except urllib.error.HTTPError as e:
+            return False, f"HTTP {e.code}"
+        except Exception as e:
+            return False, f"Network error: {e}"
+
+    def run(self) -> None:
+        self.save_dir.mkdir(parents=True, exist_ok=True)
+        completed = 0
+
+        # Validate seed 1 synchronously first to avoid spawning 1000 threads for invalid slugs
+        success, error_msg = self._download_seed(1)
+        if not success and error_msg in ("HTTP 403", "HTTP 404"):
+            self.error.emit(f"Failed to fetch seed 1. Does '{self.slug}' have patterns?")
+            self.finished.emit(False)
+            return
+        
+        completed += 1
+        self.progress.emit(completed, self.total_seeds)
+
+        # Download the rest concurrently
+        with concurrent.futures.ThreadPoolExecutor(max_workers=20) as executor:
+            future_to_seed = {executor.submit(self._download_seed, seed): seed for seed in range(2, self.total_seeds + 1)}
+            
+            for future in concurrent.futures.as_completed(future_to_seed):
+                if self.isInterruptionRequested():
+                    self.status.emit("Download cancelled. Waiting for threads to finish...")
+                    executor.shutdown(wait=False, cancel_futures=True)
+                    self.finished.emit(False)
+                    return
+
+                seed = future_to_seed[future]
+                completed += 1
+                success, error = future.result()
+                
+                if success:
+                    self.status.emit(f"Downloaded seed {seed}/{self.total_seeds}")
+                else:
+                    self.status.emit(f"Skipped seed {seed} ({error})")
+                
+                self.progress.emit(completed, self.total_seeds)
+
+        self.status.emit("Download complete!")
+        self.finished.emit(True)
+
+
+class PatternPullerDialog(QtWidgets.QDialog, I18nMixin):
+    """Dialog for extracting patterns from CSGOSkins.gg URLs."""
+
+    def __init__(self, language: str, parent: QtWidgets.QWidget | None = None) -> None:
+        super().__init__(parent)
+        self.init_i18n(language)
+        self.setWindowTitle(self._t("dialog.puller_title", default="Pull Pattern Images"))
+        self.setMinimumWidth(450)
+        self._worker: PatternDownloadWorker | None = None
+        self._build_ui()
+
+    def _build_ui(self) -> None:
+        layout = QtWidgets.QVBoxLayout(self)
+        layout.setSpacing(12)
+
+        instruction_label = QtWidgets.QLabel(self._t("dialog.puller_instruction", default="Paste a CSGOSkins.gg item URL:"))
+        layout.addWidget(instruction_label)
+
+        self.url_input = QtWidgets.QLineEdit()
+        self.url_input.setPlaceholderText("https://csgoskins.gg/items/glock-18-trace-lock")
+        layout.addWidget(self.url_input)
+
+        self.status_label = QtWidgets.QLabel("")
+        self.status_label.setStyleSheet("color: palette(window-text); font-style: italic;")
+        layout.addWidget(self.status_label)
+
+        self.progress_bar = QtWidgets.QProgressBar()
+        self.progress_bar.setRange(0, 1000)
+        self.progress_bar.setValue(0)
+        layout.addWidget(self.progress_bar)
+
+        button_layout = QtWidgets.QHBoxLayout()
+        self.start_btn = QtWidgets.QPushButton(self._t("dialog.puller_start", default="Start Download"))
+        self.cancel_btn = QtWidgets.QPushButton(self._t("dialog.puller_cancel", default="Cancel"))
+        
+        self.start_btn.clicked.connect(self._on_start_clicked)
+        self.cancel_btn.clicked.connect(self._on_cancel_clicked)
+
+        button_layout.addWidget(self.start_btn)
+        button_layout.addWidget(self.cancel_btn)
+        layout.addLayout(button_layout)
+
+    def _extract_slug(self, url: str) -> str | None:
+        # Match https://csgoskins.gg/items/SLUG
+        match = re.search(r"csgoskins\.gg/items/([^/?#]+)", url)
+        if match:
+            return match.group(1).lower()
+        return None
+
+    def _on_start_clicked(self) -> None:
+        url = self.url_input.text().strip()
+        slug = self._extract_slug(url)
+        
+        if not slug:
+            QtWidgets.QMessageBox.warning(self, "Error", self._t("dialog.puller_invalid_url", default="Invalid URL format."))
+            return
+
+        save_dir = Path("images") / slug
+
+        self.start_btn.setEnabled(False)
+        self.url_input.setEnabled(False)
+        self.progress_bar.setValue(0)
+        self.status_label.setText("Starting download...")
+
+        self._worker = PatternDownloadWorker(slug=slug, save_dir=save_dir, parent=self)
+        self._worker.progress.connect(self._on_progress)
+        self._worker.status.connect(self.status_label.setText)
+        self._worker.error.connect(self._on_error)
+        self._worker.finished.connect(self._on_finished)
+        self._worker.start()
+
+    def _on_cancel_clicked(self) -> None:
+        if self._worker and self._worker.isRunning():
+            self._worker.requestInterruption()
+            self.cancel_btn.setEnabled(False)
+            self.status_label.setText("Cancelling...")
+        else:
+            self.reject() # Close dialog if not downloading
+
+    def _on_progress(self, current: int, total: int) -> None:
+        self.progress_bar.setValue(current)
+
+    def _on_error(self, message: str) -> None:
+        QtWidgets.QMessageBox.warning(self, "Error", message)
+
+    def _on_finished(self, success: bool) -> None:
+        self.start_btn.setEnabled(True)
+        self.url_input.setEnabled(True)
+        self.cancel_btn.setEnabled(True)
+        self._worker = None
+        if success:
+            QtWidgets.QMessageBox.information(self, "Done", self._t("dialog.puller_success", default="All patterns downloaded successfully!"))

config.toml

@@ -5,6 +5,8 @@ language = "en"
 [options]
 # Set to true to clear exclusion shapes whenever the image changes.
 reset_exclusions_on_image_change = false
+# Hex color code for the match overlay (e.g. "#ff0000" for Red, "#00ff00" for Green)
+overlay_color = "#ff0000"
 
 [defaults]
 # Override any of the following keys to tweak the initial slider values:

pyproject.toml

@@ -23,3 +23,8 @@ include = ["app"]
 
 [tool.setuptools.package-data]
 "app" = ["assets/logo.png", "lang/*.toml"]
+
+[dependency-groups]
+dev = [
+    "pytest>=9.0.2",
+]

tests/test_image_processor.py

@@ -0,0 +1,123 @@
+import numpy as np
+import pytest
+from PIL import Image
+
+from app.qt.image_processor import Stats, _rgb_to_hsv_numpy, QtImageProcessor
+
+
+def test_stats_summary():
+    s = Stats(
+        matches_all=50, total_all=100,
+        matches_keep=40, total_keep=80,
+        matches_excl=10, total_excl=20
+    )
+    
+    # Mock translator
+    def mock_t(key, **kwargs):
+        if key == "stats.placeholder":
+            return "Placeholder"
+        return f"{kwargs['with_pct']:.1f} {kwargs['without_pct']:.1f} {kwargs['excluded_pct']:.1f} {kwargs['excluded_match_pct']:.1f}"
+
+    res = s.summary(mock_t)
+    # with_pct: 40/80 = 50.0
+    # without_pct: 50/100 = 50.0
+    # excluded_pct: 20/100 = 20.0
+    # excluded_match_pct: 10/20 = 50.0
+    assert res == "50.0 50.0 20.0 50.0"
+
+def test_stats_empty():
+    s = Stats()
+    assert s.summary(lambda k, **kw: "Empty") == "Empty"
+
+
+def test_rgb_to_hsv_numpy():
+    # Test red
+    arr = np.array([[[1.0, 0.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 100.0, 100.0])
+
+    # Test green
+    arr = np.array([[[0.0, 1.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [120.0, 100.0, 100.0])
+
+    # Test blue
+    arr = np.array([[[0.0, 0.0, 1.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [240.0, 100.0, 100.0])
+
+    # Test white
+    arr = np.array([[[1.0, 1.0, 1.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 0.0, 100.0])
+
+    # Test black
+    arr = np.array([[[0.0, 0.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 0.0, 0.0])
+
+
+def test_qt_processor_matches_legacy():
+    proc = QtImageProcessor()
+    proc.hue_min = 350
+    proc.hue_max = 10
+    proc.sat_min = 50
+    proc.val_min = 50
+    proc.val_max = 100
+
+    # Red wraps around 360, so H=0 -> ok
+    assert proc._matches(255, 0, 0) is True
+    # Green H=120 -> fail
+    assert proc._matches(0, 255, 0) is False
+    # Dark red S=100, V=25 -> fail because val_min=50
+    assert proc._matches(64, 0, 0) is False
+
+def test_set_overlay_color():
+    proc = QtImageProcessor()
+    # default red
+    assert proc.overlay_r == 255
+    assert proc.overlay_g == 0
+    assert proc.overlay_b == 0
+
+    proc.set_overlay_color("#00ff00")
+    assert proc.overlay_r == 0
+    assert proc.overlay_g == 255
+    assert proc.overlay_b == 0
+
+    # invalid hex does nothing
+    proc.set_overlay_color("blue")
+    assert proc.overlay_r == 0
+
+def test_coordinate_scaling():
+    proc = QtImageProcessor()
+    
+    # Create a 200x200 image where everything is red
+    red_img_small = Image.new("RGBA", (200, 200), (255, 0, 0, 255))
+    proc.orig_img = red_img_small # satisfy preview logic
+    proc.preview_img = red_img_small 
+    
+    # All red. Thresholds cover all red.
+    proc.hue_min = 0
+    proc.hue_max = 360
+    proc.sat_min = 10
+    proc.val_min = 10
+    
+    # Exclude the right half (100-200)
+    proc.set_exclusions([{"kind": "rect", "coords": (100, 0, 200, 200)}])
+    
+    # Verify small stats
+    s_small = proc.get_stats_headless(red_img_small)
+    # total=40000, keep=20000, excl=20000
+    assert s_small.total_all == 40000
+    assert s_small.total_keep == 20000
+    assert s_small.total_excl == 20000
+    
+    # Now check on a 1000x1000 image (5x scale)
+    red_img_large = Image.new("RGBA", (1000, 1000), (255, 0, 0, 255))
+    s_large = proc.get_stats_headless(red_img_large)
+    
+    # total=1,000,000. If scaling works, keep=500,000, excl=500,000.
+    # If scaling FAILED, the mask is still 100x200 (20,000 px) -> excl=20,000.
+    assert s_large.total_all == 1000000
+    assert s_large.total_keep == 500000
+    assert s_large.total_excl == 500000