Update CS2 data source

Point the pattern fetcher to the ByMykel raw GitHub URL now that the old endpoint returns 404.

README.md

@@ -13,11 +13,13 @@
 - Theme toggle (light/dark) with rounded toolbar buttons and accent-aware highlights
 - Folder support with wrap-around previous/next navigation
 - Quick overlay export (PNG) with configurable defaults and language settings via `config.toml`
+- Integrated CS2 pattern fetcher to download weapon skin artwork for reference
 
 ## Requirements
 - Python 3.11+ (3.10 works with `tomli`)
 - [uv](https://github.com/astral-sh/uv) for dependency management
 - Tkinter (install separately on some Linux distros)
+- Internet access if you plan to use the CS2 pattern fetcher subtool
 
 ## Setup with uv (Windows PowerShell)
 ```bash
@@ -37,7 +39,8 @@ On macOS/Linux activate with `source .venv/bin/activate` instead.
 3. Fine‑tune sliders; watch the overlay update on the right.
 4. Toggle freehand mode (`△`) or stick with rectangles and mark areas to exclude (right mouse drag).
 5. Move through folder images with `⬅️` / `➡️`; exclusions stay put unless you opt into automatic resets.
-6. Save an overlay (`💾`) when ready.
+6. Fetch CS2 pattern images (`⭳`) whenever you need additional references.
+7. Save an overlay (`💾`) when ready.
 
 ## Project Layout
 ```
@@ -45,6 +48,7 @@ app/
   app.py          # main app assembly
   gui/            # UI, theme, picker mixins
   logic/          # image ops, defaults, config helpers
+  tools/          # auxiliary tools (e.g., CS2 pattern fetcher)
   lang/           # localisation TOML files
 config.toml       # optional defaults
 main.py           # entry point

app/app.py

@@ -56,6 +56,7 @@ class ICRAApp(
         self._exclude_canvas_ids: list[int] = []
         self._current_stroke: list[tuple[int, int]] | None = None
         self.free_draw_width = 14
+        self._cs2_tool_window = None
         self.pick_mode = False
 
         # Image references

app/gui/ui.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import colorsys
 import tkinter as tk
 import tkinter.font as tkfont
-from tkinter import ttk
+from tkinter import messagebox, ttk
 
 
 class UIBuilderMixin:
@@ -26,6 +26,7 @@ class UIBuilderMixin:
             ("🧹", 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.cs2_tool"), self.open_cs2_pattern_tool),
             ("🌓", self._t("toolbar.toggle_theme"), self.toggle_theme),
         ]
         self._toolbar_buttons: list[dict[str, object]] = []
@@ -522,6 +523,18 @@ class UIBuilderMixin:
                 activeforeground=palette["fg"],
             )
 
+    def open_cs2_pattern_tool(self) -> None:
+        try:
+            from app.tools import open_cs2_pattern_tool as _open_cs2_pattern_tool
+        except Exception as exc:  # noqa: BLE001
+            messagebox.showerror(
+                self._t("dialog.error_title"),
+                self._t("cs2.launch_error").format(error=str(exc)),
+                parent=getattr(self, "root", None),
+            )
+            return
+        _open_cs2_pattern_tool(self)
+
     def _canvas_background_colour(self) -> str:
         return "#0f0f10" if getattr(self, "theme", "light") == "dark" else "#ffffff"
 

app/lang/de.toml

@@ -7,6 +7,7 @@
 "toolbar.save_overlay" = "Overlay speichern"
 "toolbar.clear_excludes" = "Ausschlüsse löschen"
 "toolbar.toggle_free_draw" = "Freihandmodus umschalten"
+"toolbar.cs2_tool" = "Bilder abrufen"
 "toolbar.undo_exclude" = "Letzten Ausschluss entfernen"
 "toolbar.reset_sliders" = "Slider zurücksetzen"
 "toolbar.toggle_theme" = "Theme umschalten"
@@ -59,3 +60,20 @@
 "dialog.no_image_loaded" = "Kein Bild geladen."
 "dialog.no_preview_available" = "Keine Preview vorhanden."
 "dialog.overlay_saved" = "Overlay gespeichert: {path}"
+"cs2.title" = "CS2 Muster Downloader"
+"cs2.status_loading" = "Waffendaten werden geladen..."
+"cs2.status_ready" = "Daten geladen. Waffe und Muster auswählen."
+"cs2.status_error" = "CS2-Daten konnten nicht geladen werden: {error}"
+"cs2.status_empty" = "Keine Waffen in der Datenquelle verfügbar."
+"cs2.weapon_label" = "Waffe"
+"cs2.pattern_label" = "Muster"
+"cs2.output_label" = "Speichern unter"
+"cs2.browse_button" = "Durchsuchen..."
+"cs2.refresh_button" = "Liste aktualisieren"
+"cs2.download_button" = "Bild herunterladen"
+"cs2.no_weapon" = "Bitte zuerst eine Waffe wählen."
+"cs2.no_pattern" = "Bitte ein Muster zum Download auswählen."
+"cs2.pattern_missing" = "Musterdaten fehlen. Bitte neu laden."
+"cs2.download_error" = "Muster konnte nicht geladen werden: {error}"
+"cs2.download_success" = "Bild gespeichert unter {path}"
+"cs2.launch_error" = "Werkzeug konnte nicht geöffnet werden: {error}"

app/lang/en.toml

@@ -7,6 +7,7 @@
 "toolbar.save_overlay" = "Save overlay"
 "toolbar.clear_excludes" = "Clear exclusions"
 "toolbar.toggle_free_draw" = "Toggle free-draw"
+"toolbar.cs2_tool" = "Fetch Images"
 "toolbar.undo_exclude" = "Undo last exclusion"
 "toolbar.reset_sliders" = "Reset sliders"
 "toolbar.toggle_theme" = "Toggle theme"
@@ -59,3 +60,20 @@
 "dialog.no_image_loaded" = "No image loaded."
 "dialog.no_preview_available" = "No preview available."
 "dialog.overlay_saved" = "Overlay saved: {path}"
+"cs2.title" = "CS2 Pattern Fetcher"
+"cs2.status_loading" = "Loading weapon data..."
+"cs2.status_ready" = "Weapon data loaded. Choose a weapon and pattern."
+"cs2.status_error" = "Could not load CS2 data: {error}"
+"cs2.status_empty" = "No weapons available from the data source."
+"cs2.weapon_label" = "Weapon"
+"cs2.pattern_label" = "Pattern"
+"cs2.output_label" = "Download to"
+"cs2.browse_button" = "Browse..."
+"cs2.refresh_button" = "Refresh list"
+"cs2.download_button" = "Download image"
+"cs2.no_weapon" = "Select a weapon first."
+"cs2.no_pattern" = "Select a pattern to download."
+"cs2.pattern_missing" = "Pattern data is missing. Try refreshing."
+"cs2.download_error" = "Unable to download pattern: {error}"
+"cs2.download_success" = "Saved image to {path}"
+"cs2.launch_error" = "Pattern tool could not be opened: {error}"

app/tools/__init__.py

@@ -0,0 +1,8 @@
+"""Auxiliary tooling for the ICRA application."""
+
+from __future__ import annotations
+
+from .cs2_patterns import open_cs2_pattern_tool
+
+__all__ = ["open_cs2_pattern_tool"]
+

app/tools/cs2_patterns.py

@@ -0,0 +1,742 @@
+"""CS2 skin pattern fetching subtool."""
+
+from __future__ import annotations
+
+import json
+import threading
+from importlib import resources
+from pathlib import Path
+from typing import Any, Iterable, Optional
+
+import tkinter as tk
+import tkinter.font as tkfont
+from tkinter import filedialog, messagebox, ttk
+
+import requests
+from PIL import Image, ImageTk
+from urllib.parse import urlparse
+
+from app.logic import IMAGES_DIR
+
+
+class CS2PatternFetcher:
+    """Fetch CS2 skin metadata and download pattern images."""
+
+    DATA_URL = "https://raw.githubusercontent.com/ByMykel/CSGO-API/main/public/api/en/skins.json"
+
+    def __init__(self, cache_dir: Path | None = None):
+        self.cache_dir = cache_dir or Path.home() / ".icra"
+        self.cache_path = self.cache_dir / "cs2_skins.json"
+        self._data: list[dict[str, Any]] | None = None
+        self._session: requests.Session | None = None
+
+    def ensure_data(self, *, force_refresh: bool = False) -> list[dict[str, Any]]:
+        if not force_refresh and self._data is not None:
+            return self._data
+        if not force_refresh:
+            cached = self._load_cache()
+            if cached is not None:
+                self._data = cached
+                return cached
+        data = self._download()
+        self._data = data
+        self._write_cache(data)
+        return data
+
+    def list_weapons(self) -> list[str]:
+        data = self.ensure_data()
+        weapons = {self._weapon_name(item) for item in data}
+        return sorted(filter(None, weapons))
+
+    def list_patterns(self, weapon: str) -> list[str]:
+        data = self.ensure_data()
+        patterns = {
+            self._pattern_name(item)
+            for item in data
+            if self._weapon_name(item) == weapon
+        }
+        return sorted(filter(None, patterns))
+
+    def find_entry(self, weapon: str, pattern: str) -> Optional[dict[str, Any]]:
+        data = self.ensure_data()
+        for item in data:
+            if self._weapon_name(item) == weapon and self._pattern_name(item) == pattern:
+                return item
+        return None
+
+    def download_pattern_image(
+        self,
+        entry: dict[str, Any],
+        target_dir: Path,
+    ) -> Path:
+        image_url = self._image_url(entry)
+        if not image_url:
+            raise ValueError("Selected pattern does not provide an image URL.")
+
+        target_dir.mkdir(parents=True, exist_ok=True)
+        weapon_slug = self._slugify(self._weapon_name(entry))
+        pattern_slug = self._slugify(self._pattern_name(entry))
+        suffix = self._infer_suffix(image_url)
+        filename = f"{weapon_slug}__{pattern_slug}{suffix}"
+        destination = target_dir / filename
+        counter = 1
+        while destination.exists():
+            destination = target_dir / f"{weapon_slug}__{pattern_slug}_{counter}{suffix}"
+            counter += 1
+
+        session = self._session or requests.Session()
+        response = session.get(image_url, timeout=30)
+        response.raise_for_status()
+        destination.write_bytes(response.content)
+        return destination
+
+    # Internal helpers -------------------------------------------------
+
+    def _load_cache(self) -> list[dict[str, Any]] | None:
+        try:
+            if self.cache_path.exists():
+                return json.loads(self.cache_path.read_text(encoding="utf-8"))
+        except (OSError, json.JSONDecodeError):
+            return None
+        return None
+
+    def _write_cache(self, data: Iterable[dict[str, Any]]) -> None:
+        try:
+            self.cache_dir.mkdir(parents=True, exist_ok=True)
+            self.cache_path.write_text(json.dumps(list(data)), encoding="utf-8")
+        except OSError:
+            pass
+
+    def _download(self) -> list[dict[str, Any]]:
+        self._session = self._session or requests.Session()
+        response = self._session.get(self.DATA_URL, timeout=30)
+        response.raise_for_status()
+        payload = response.json()
+        if isinstance(payload, dict):
+            # some mirrors wrap the payload in a top-level dict
+            payload = payload.get("skins") or payload.get("data") or []
+        if not isinstance(payload, list):
+            raise ValueError("Unexpected CS2 skin data format.")
+        return payload
+
+    @staticmethod
+    def _weapon_name(entry: dict[str, Any]) -> str:
+        weapon = entry.get("weapon")
+        if isinstance(weapon, dict):
+            for key in ("name", "value", "english", "label"):
+                if weapon.get(key):
+                    return str(weapon[key])
+        if weapon:
+            return str(weapon)
+        return str(entry.get("weapon_name") or entry.get("weaponId") or "Unknown")
+
+    @staticmethod
+    def _pattern_name(entry: dict[str, Any]) -> str:
+        pattern = entry.get("pattern")
+        if isinstance(pattern, dict):
+            for key in ("name", "value", "english", "label"):
+                if pattern.get(key):
+                    return str(pattern[key])
+        if pattern:
+            return str(pattern)
+        return str(entry.get("name") or entry.get("skin") or entry.get("title") or "Pattern")
+
+    @staticmethod
+    def _image_url(entry: dict[str, Any]) -> Optional[str]:
+        for key in ("image", "image_url", "url"):
+            value = entry.get(key)
+            if isinstance(value, str) and value.startswith("http"):
+                return value
+        media = entry.get("media")
+        if isinstance(media, dict):
+            for key in ("image", "large", "icon"):
+                value = media.get(key)
+                if isinstance(value, str) and value.startswith("http"):
+                    return value
+        return None
+
+    @staticmethod
+    def _slugify(text: str | None) -> str:
+        if not text:
+            return "item"
+        cleaned = "".join(ch.lower() if ch.isalnum() else "-" for ch in text)
+        cleaned = "-".join(filter(None, cleaned.split("-")))
+        return cleaned or "item"
+
+    @staticmethod
+    def _infer_suffix(url: str) -> str:
+        parsed = urlparse(url)
+        path = Path(parsed.path)
+        suffix = path.suffix.lower()
+        if suffix in {".png", ".jpg", ".jpeg", ".webp"}:
+            return suffix
+        return ".png"
+
+
+class CS2PatternTool(tk.Toplevel):
+    """Tkinter UI wrapper around CS2PatternFetcher."""
+
+    def __init__(self, app) -> None:
+        super().__init__(app.root)
+        self.app = app
+        self.fetcher = CS2PatternFetcher()
+        self.theme = getattr(self.app, "theme", "light")
+        self.title(self._t("cs2.title"))
+        self.geometry("560x380")
+        self.minsize(540, 340)
+        self.resizable(True, True)
+        self._drag_offset: tuple[int, int] | None = None
+        self._setup_window()
+        self.body = ttk.Frame(self.container, style="CS2.TFrame")
+        self.body.pack(fill=tk.BOTH, expand=True, padx=18, pady=(14, 18))
+        self._toolbar_buttons: list[dict[str, Any]] = []
+
+        self.weapons_var = tk.StringVar()
+        self.patterns_var = tk.StringVar()
+        self.directory_var = tk.StringVar(value=str(IMAGES_DIR.resolve()))
+        self.status_var = tk.StringVar(value=self._t("cs2.status_loading"))
+
+        self._init_styles()
+        self._init_widgets()
+        self._data_loaded = False
+        self._load_thread: Optional[threading.Thread] = None
+        self._start_loading()
+
+        self.protocol("WM_DELETE_WINDOW", self._on_close)
+        self._bring_to_front()
+        self._center_window()
+
+    # UI construction --------------------------------------------------
+
+    def _init_widgets(self) -> None:
+        frame = self.body
+
+        toolbar = tk.Frame(frame, bg=self._background_colour(), bd=0, highlightthickness=0)
+        toolbar.pack(fill=tk.X, pady=(0, 16))
+        self._toolbar_frame = toolbar
+        for icon, label, command in self._toolbar_button_defs():
+            self._add_toolbar_button(toolbar, icon, label, command)
+
+        top = ttk.Frame(frame, style="CS2.TFrame")
+        top.pack(fill=tk.X, pady=(0, 12))
+        ttk.Label(top, text=self._t("cs2.weapon_label"), style="CS2.TLabel").grid(row=0, column=0, sticky="w")
+        self.weapon_combo = ttk.Combobox(
+            top, textvariable=self.weapons_var, state="disabled", style="CS2.TCombobox"
+        )
+        self.weapon_combo.grid(row=1, column=0, sticky="we", padx=(0, 12))
+        self.weapon_combo.bind("<<ComboboxSelected>>", self._on_weapon_selected)
+
+        ttk.Label(top, text=self._t("cs2.pattern_label"), style="CS2.TLabel").grid(
+            row=0, column=1, sticky="w"
+        )
+        self.pattern_combo = ttk.Combobox(
+            top, textvariable=self.patterns_var, state="disabled", style="CS2.TCombobox"
+        )
+        self.pattern_combo.grid(row=1, column=1, sticky="we")
+        self.pattern_combo.bind("<<ComboboxSelected>>", self._on_pattern_selected)
+        top.columnconfigure(0, weight=1)
+        top.columnconfigure(1, weight=1)
+
+        dir_frame = ttk.Frame(frame, style="CS2.TFrame")
+        dir_frame.pack(fill=tk.X, pady=(0, 12))
+        ttk.Label(dir_frame, text=self._t("cs2.output_label"), style="CS2.TLabel").grid(
+            row=0, column=0, sticky="w"
+        )
+        entry = ttk.Entry(dir_frame, textvariable=self.directory_var, style="CS2.TEntry")
+        entry.grid(row=1, column=0, sticky="we", padx=(0, 8))
+        dir_frame.columnconfigure(0, weight=1)
+
+        status_label = ttk.Label(frame, textvariable=self.status_var, anchor="w", justify="left", style="CS2.TLabel")
+        status_label.pack(fill=tk.X)
+        self._refresh_toolbar_buttons_theme()
+
+    def _setup_window(self) -> None:
+        self.overrideredirect(True)
+        border_colour = "#27272b" if self.theme == "dark" else "#d0d0d8"
+        self.configure(bg=border_colour)
+        self.container = tk.Frame(self, bg=self._background_colour(), bd=0, highlightthickness=0)
+        self.container.pack(fill=tk.BOTH, expand=True, padx=2, pady=2)
+        self._create_titlebar()
+
+    def _create_titlebar(self) -> None:
+        bar_bg = "#1f1f1f" if self.theme == "dark" else "#2f2f35"
+        title_bar = tk.Frame(self.container, bg=bar_bg, relief="flat", height=34)
+        title_bar.pack(fill=tk.X, side=tk.TOP)
+        title_bar.pack_propagate(False)
+
+        logo = None
+        try:
+            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:  # noqa: BLE001
+            logo = None
+
+        if logo is not None:
+            logo_label = tk.Label(title_bar, image=logo, bg=bar_bg)
+            logo_label.image = logo
+            logo_label.pack(side=tk.LEFT, padx=(10, 6), pady=4)
+        else:
+            logo_label = None
+
+        title_label = tk.Label(
+            title_bar,
+            text=self._t("cs2.title"),
+            bg=bar_bg,
+            fg="#f5f5f5",
+            font=("Segoe UI", 11, "bold"),
+            anchor="w",
+        )
+        title_label.pack(side=tk.LEFT, padx=6)
+
+        close_btn = tk.Button(
+            title_bar,
+            text="✕",
+            command=self._on_close,
+            bg=bar_bg,
+            fg="#f5f5f5",
+            activebackground="#ff3b30",
+            activeforeground="#ffffff",
+            borderwidth=0,
+            highlightthickness=0,
+            relief="flat",
+            font=("Segoe UI", 10, "bold"),
+            cursor="hand2",
+            width=3,
+        )
+        close_btn.pack(side=tk.RIGHT, padx=8, 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))
+
+        bind_targets = [title_bar, title_label]
+        if logo_label is not None:
+            bind_targets.append(logo_label)
+        for widget in bind_targets:
+            widget.bind("<ButtonPress-1>", self._start_window_drag)
+            widget.bind("<B1-Motion>", self._perform_window_drag)
+
+    def _bring_to_front(self) -> None:
+        try:
+            self.transient(self.app.root)
+            self.lift()
+            self.focus_force()
+        except Exception:  # noqa: BLE001
+            pass
+
+    def _center_window(self) -> None:
+        try:
+            self.update_idletasks()
+            root = self.app.root
+            root.update_idletasks()
+            width = self.winfo_width()
+            height = self.winfo_height()
+            root_width = root.winfo_width()
+            root_height = root.winfo_height()
+            root_x = root.winfo_rootx()
+            root_y = root.winfo_rooty()
+            x = root_x + (root_width - width) // 2
+            y = root_y + (root_height - height) // 2
+            self.geometry(f"{width}x{height}+{x}+{y}")
+        except Exception:  # noqa: BLE001
+            pass
+
+    def _init_styles(self) -> None:
+        style = ttk.Style(self)
+        try:
+            style.theme_use("clam")
+        except Exception:  # noqa: BLE001
+            pass
+        base_bg = self._background_colour()
+        fg = "#f5f5f5" if self.theme == "dark" else "#202020"
+        field_bg = "#1f1f25" if self.theme == "dark" else "#f5f5f8"
+        border = "#4d4d50" if self.theme == "dark" else "#b8b8c0"
+
+        style.configure("CS2.TFrame", background=base_bg)
+        style.configure("CS2.TLabel", background=base_bg, foreground=fg, font=("Segoe UI", 10))
+
+        style.configure(
+            "CS2.TEntry",
+            fieldbackground=field_bg,
+            foreground=fg,
+            insertcolor=fg,
+            bordercolor=border,
+            lightcolor=border,
+            darkcolor=border,
+            relief="flat",
+            padding=6,
+        )
+        style.map("CS2.TEntry", fieldbackground=[("disabled", field_bg)], foreground=[("disabled", fg)])
+
+        style.configure(
+            "CS2.TCombobox",
+            fieldbackground=field_bg,
+            foreground=fg,
+            background=field_bg,
+            bordercolor=border,
+            arrowcolor=fg,
+            relief="flat",
+            padding=4,
+        )
+        style.map(
+            "CS2.TCombobox",
+            fieldbackground=[("readonly", field_bg)],
+            foreground=[("readonly", fg)],
+            background=[("readonly", field_bg)],
+        )
+
+        self.container.configure(bg=base_bg)
+        self.body.configure(style="CS2.TFrame")
+
+    # Data loading -----------------------------------------------------
+
+    def _start_loading(self) -> None:
+        if self._load_thread and self._load_thread.is_alive():
+            return
+        self.status_var.set(self._t("cs2.status_loading"))
+        self.weapon_combo.configure(state="disabled", values=[])
+        self.pattern_combo.configure(state="disabled", values=[])
+        self._load_thread = threading.Thread(target=self._load_data, daemon=True)
+        self._load_thread.start()
+
+    def _load_data(self, force_refresh: bool = False) -> None:
+        try:
+            weapons = self.fetcher.list_weapons() if not force_refresh else None
+            if force_refresh:
+                self.fetcher.ensure_data(force_refresh=True)
+                weapons = self.fetcher.list_weapons()
+        except Exception as exc:  # noqa: BLE001
+            self.after(0, lambda err=exc: self._on_load_failed(err))
+            return
+        self.after(0, lambda items=weapons: self._on_data_ready(items or []))
+
+    def _on_data_ready(self, weapons: list[str]) -> None:
+        if not weapons:
+            self.status_var.set(self._t("cs2.status_empty"))
+            return
+        self.weapon_combo.configure(state="readonly", values=weapons)
+        self.weapon_combo.set(weapons[0])
+        self._populate_patterns(weapons[0])
+        self.status_var.set(self._t("cs2.status_ready"))
+        self._data_loaded = True
+
+    def _on_load_failed(self, exc: Exception) -> None:
+        self.status_var.set(
+            self._t("cs2.status_error").format(error=str(exc))
+        )
+        messagebox.showerror(
+            self._t("dialog.error_title"),
+            self._t("cs2.status_error").format(error=str(exc)),
+            parent=self,
+        )
+
+    def _refresh_data(self) -> None:
+        self._start_loading()
+        thread = threading.Thread(
+            target=self._load_data, kwargs={"force_refresh": True}, daemon=True
+        )
+        thread.start()
+
+    def _populate_patterns(self, weapon: str) -> None:
+        try:
+            patterns = self.fetcher.list_patterns(weapon)
+        except Exception as exc:  # noqa: BLE001
+            self.status_var.set(
+                self._t("cs2.status_error").format(error=str(exc))
+            )
+            return
+        self.pattern_combo.configure(state="readonly", values=patterns)
+        if patterns:
+            self.pattern_combo.set(patterns[0])
+        else:
+            self.pattern_combo.set("")
+
+    # Event handlers ---------------------------------------------------
+
+    def _on_weapon_selected(self, event=None) -> None:  # noqa: ANN001
+        weapon = self.weapons_var.get()
+        if weapon:
+            self._populate_patterns(weapon)
+
+    def _on_pattern_selected(self, event=None) -> None:  # noqa: ANN001
+        return
+
+    def _browse_directory(self) -> None:
+        directory = filedialog.askdirectory(parent=self, mustexist=True)
+        if directory:
+            self.directory_var.set(directory)
+
+    def _download_selected(self) -> None:
+        weapon = self.weapons_var.get()
+        pattern = self.patterns_var.get()
+        if not weapon:
+            messagebox.showinfo(
+                self._t("dialog.info_title"), self._t("cs2.no_weapon"), parent=self
+            )
+            return
+        if not pattern:
+            messagebox.showinfo(
+                self._t("dialog.info_title"), self._t("cs2.no_pattern"), parent=self
+            )
+            return
+        target_dir = Path(self.directory_var.get()).expanduser()
+        entry = self.fetcher.find_entry(weapon, pattern)
+        if entry is None:
+            messagebox.showerror(
+                self._t("dialog.error_title"),
+                self._t("cs2.pattern_missing"),
+                parent=self,
+            )
+            return
+        try:
+            path = self.fetcher.download_pattern_image(entry, target_dir)
+        except requests.RequestException as exc:
+            messagebox.showerror(
+                self._t("dialog.error_title"),
+                self._t("cs2.download_error").format(error=str(exc)),
+                parent=self,
+            )
+            return
+        except Exception as exc:  # noqa: BLE001
+            messagebox.showerror(
+                self._t("dialog.error_title"),
+                self._t("cs2.download_error").format(error=str(exc)),
+                parent=self,
+            )
+            return
+        messagebox.showinfo(
+            self._t("dialog.saved_title"),
+            self._t("cs2.download_success").format(path=path),
+            parent=self,
+        )
+
+    def _start_window_drag(self, event) -> None:  # noqa: ANN001
+        self._drag_offset = (
+            event.x_root - self.winfo_rootx(),
+            event.y_root - self.winfo_rooty(),
+        )
+
+    def _perform_window_drag(self, event) -> None:  # noqa: ANN001
+        offset = getattr(self, "_drag_offset", None)
+        if offset is None:
+            return
+        x = event.x_root - offset[0]
+        y = event.y_root - offset[1]
+        self.geometry(f"+{x}+{y}")
+
+    def _toolbar_button_defs(self) -> list[tuple[str, str, Any]]:
+        return [
+            ("🔄", self._t("cs2.refresh_button"), self._refresh_data),
+            ("⭳", self._t("cs2.download_button"), self._download_selected),
+            ("📁", self._t("cs2.browse_button"), self._browse_directory),
+        ]
+
+    def _toolbar_palette(self) -> dict[str, str]:
+        if getattr(self, "theme", "light") == "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 _add_toolbar_button(self, parent, icon: str, label: str, command) -> None:
+        font = tkfont.Font(root=self, 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._background_colour()
+        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(),
+        }
+        self._toolbar_buttons.append(button_data)
+
+        def set_fill(state: str) -> None:
+            pal = button_data["palette"]
+            canvas.itemconfigure(rect_id, fill=pal[state])
+
+        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")
+            canvas.after_idle(execute)
+
+        def on_enter(_event):
+            set_fill("hover")
+
+        def on_leave(_event):
+            set_fill("normal")
+
+        def on_focus_in(_event):
+            pal = button_data["palette"]
+            canvas.itemconfigure(rect_id, outline=pal["outline_focus"])
+
+        def on_focus_out(_event):
+            pal = button_data["palette"]
+            canvas.itemconfigure(rect_id, outline=pal["outline"])
+
+        def invoke_keyboard(_event=None):
+            set_fill("active")
+            canvas.after(120, lambda: set_fill("hover"))
+            canvas.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)
+
+    def _refresh_toolbar_buttons_theme(self) -> None:
+        if not self._toolbar_buttons:
+            return
+        palette = self._toolbar_palette()
+        bg = self._background_colour()
+        if hasattr(self, "_toolbar_frame") and self._toolbar_frame is not None:
+            try:
+                self._toolbar_frame.configure(bg=bg)
+            except Exception:  # noqa: BLE001
+                pass
+        for data in self._toolbar_buttons:
+            canvas = data["canvas"]
+            rect = data["rect"]
+            text_ids = data["text_ids"]
+            data["palette"] = palette.copy()
+            canvas.configure(bg=bg)
+            canvas.itemconfigure(rect, fill=palette["normal"], outline=palette["outline"])
+            for text_id in text_ids:
+                canvas.itemconfigure(text_id, fill=palette["text"])
+
+    @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 _background_colour(self) -> str:
+        return "#0f0f10" if getattr(self, "theme", "light") == "dark" else "#ffffff"
+
+    def _t(self, key: str) -> str:
+        translator = getattr(self.app, "translator", None)
+        if translator is not None:
+            return translator.translate(key)
+        if hasattr(self.app, "_t"):
+            return self.app._t(key)  # type: ignore[attr-defined]
+        return key
+
+    def _on_close(self) -> None:
+        if hasattr(self.app, "_cs2_tool_window"):
+            self.app._cs2_tool_window = None  # type: ignore[attr-defined]
+        self.destroy()
+
+
+def open_cs2_pattern_tool(app) -> CS2PatternTool:
+    """Launch (or focus) the CS2 pattern tool."""
+    existing = getattr(app, "_cs2_tool_window", None)
+    if existing is not None and isinstance(existing, tk.Toplevel):
+        try:
+            if existing.winfo_exists():
+                existing.lift()
+                existing.focus_force()
+                return existing
+        except Exception:  # noqa: BLE001
+            pass
+    window = CS2PatternTool(app)
+    app._cs2_tool_window = window  # type: ignore[attr-defined]
+    return window

pyproject.toml

@@ -8,6 +8,7 @@ license = "MIT"
 requires-python = ">=3.10"
 dependencies = [
     "pillow>=10.0.0",
+    "requests>=2.31.0",
 ]
 
 [project.scripts]