Make palette swatches borderless

README.md

@@ -15,16 +15,16 @@ ICRS is a small Tkinter tool for analysing colour ranges in images. You load a p
 - [uv](https://github.com/astral-sh/uv) for dependency management
 - Tkinter (install separately on some Linux distros)
 
-## Setup with uv
+## Setup with uv (Windows PowerShell)
-```bash
+```powershell
 git clone https://git.lukasmahler.de/lm/ICRS.git
 cd ICRS
 uv venv
-source .venv/bin/activate         # Windows: .venv\Scripts\activate
+.\.venv\Scripts\Activate
-uv pip install .                  # install ICRS and dependencies
+uv pip install .
-uv run icrs                       # launches the GUI
+uv run icrs
 ```
-The launcher copies Tcl/Tk resources into the virtualenv on first run, so no manual environment tweaks are needed.
+The launcher copies Tcl/Tk resources into the virtualenv on first run, so no manual environment tweaks are needed. On macOS/Linux replace the activate step with `source .venv/bin/activate`.
 
 ## Workflow
 1. Load an image (`📂`) or a folder (`📁`).

app/gui/ui.py

@@ -169,18 +169,16 @@ class UIBuilderMixin:
     def _add_palette_swatch(self, parent, name: str, hex_code: str) -> None:
         swatch = tk.Canvas(
             parent,
-            width=26,
+            width=24,
-            height=26,
+            height=24,
-            highlightthickness=1,
+            highlightthickness=0,
-            highlightbackground="#b1b1b6",
+            background=hex_code,
-            background="#ffffff",
             bd=0,
             relief="flat",
             takefocus=1,
             cursor="hand2",
         )
         swatch.pack(side=tk.LEFT, padx=4, pady=2)
-        swatch.create_rectangle(3, 3, 23, 23, outline="#4a4a4a", fill=hex_code)
 
         def trigger(_event=None, colour=hex_code, label=name):
             self.apply_sample_colour(colour, label)
@@ -188,8 +186,8 @@ class UIBuilderMixin:
         swatch.bind("<Button-1>", trigger)
         swatch.bind("<space>", trigger)
         swatch.bind("<Return>", trigger)
-        swatch.bind("<Enter>", lambda _e: swatch.configure(highlightbackground="#71717a"))
+        swatch.bind("<Enter>", lambda _e: swatch.configure(highlightthickness=1, highlightbackground="#71717a"))
-        swatch.bind("<Leave>", lambda _e: swatch.configure(highlightbackground="#b1b1b6"))
+        swatch.bind("<Leave>", lambda _e: swatch.configure(highlightthickness=0))
 
     def _add_toolbar_button(self, parent, text: str, command) -> None:
         font = tkfont.Font(root=self.root, family="Segoe UI", size=9)