#3147 icon: add script to generate image formats and sizes

Signed-off-by: Patrizio Bekerle <[email protected]>

icons/README.md

@@ -0,0 +1,11 @@
+# Icons
+
+To generate icons for the whole applications, run the following command:
+
+```bash
+# Generate all icons
+./generate-icons.sh
+```
+
+It uses `icon.svg` and `icon-dark.svg` as the source files and generates the
+icons in the `icons` folder, for `src/images` and the snaps.

icons/generate-icons.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+# Exit on any error
+set -e
+
+# Configuration
+SRC_IMAGES_DIR="../src/images"
+INPUT_SVG="icon.svg"
+INPUT_DARK_SVG="icon-dark.svg"
+SIZES_APP=(16 24 32 48 64 96 128 256 512)
+APP_NAME="QOwnNotes"
+
+# Check if input file exists
+if [ ! -f "$INPUT_SVG" ]; then
+    echo "Error: Input file '$INPUT_SVG' not found!"
+    exit 1
+fi
+
+#Check if dark input file exists
+if [ ! -f "$INPUT_DARK_SVG" ]; then
+    echo "Error: Input file '$INPUT_DARK_SVG' not found!"
+    exit 1
+fi
+
+# Function to convert images
+convert_icon() {
+    local size=$1
+    local output_file=$2
+    local input_file=$3
+
+    # Use fallback to $INPUT_SVG if no local input file is provided
+    if [ -z "$input_file" ]; then
+        input_file=$INPUT_SVG
+    fi
+
+    echo "Converting to ${size}x${size} -> ${output_file}"
+#    magick "$input_file" -resize "${size}x${size}" "$output_file"
+    rsvg-convert -w "$size" -h "$size" "$input_file" -o "$output_file"
+}
+
+# Generate all sizes
+convert_icon 128 "icon.png"
+convert_icon 16 "icon.icns"
+convert_icon 48 "icon.ico"
+convert_icon 800 "icon-800.png"
+convert_icon 512 "../snap/gui/QOwnNotes.png"
+convert_icon 512 "../build-systems/github/snap.qt6/gui/QOwnNotes.png"
+convert_icon 512 "../build-systems/snap/snapcraft/snap/gui/QOwnNotes.png"
+
+# Generate app icons
+for size in "${SIZES_APP[@]}"; do
+    convert_icon ${size} "${SRC_IMAGES_DIR}/icons/${size}x${size}/apps/${APP_NAME}.png"
+done
+
+# Copy to src/images
+echo "Copying to src/images"
+cp icon.png ${SRC_IMAGES_DIR}/icon.png
+cp ${INPUT_DARK_SVG} ${SRC_IMAGES_DIR}/icon-dark.svg
+convert_icon 128 ${SRC_IMAGES_DIR}/icon-dark.png ${INPUT_DARK_SVG}
+
+echo "Icon conversion complete!"

justfile

@@ -160,6 +160,11 @@ fix-settings-ui-file:
 process-trace:
     sudo lurk --attach `procs QOwnNotes | fzf --height 40% --layout reverse | awk '{print $1}'`
 
+# Generate the icons for the whole project based on icons/icon.svg and icons/icon-dark.svg
+[group('icons')]
+generate-icons:
+    cd icons &&./generate-icons.sh
+
 # Format all justfiles
 [group('linter')]
 just-format:

shell.nix

@@ -25,6 +25,7 @@
       findutils
       gnused
       ripgrep
+      librsvg
     ];
 
     buildInputs = with pkgs; with qt6; [