qt: generate macOS icon assets, commit resizing and creation script

Author: kwvg

contrib/devtools/gen_macos_icons.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env python3
+# Copyright (c) 2026 The Dash Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import os
+import platform
+import shutil
+import subprocess
+import sys
+import tempfile
+
+# Assuming 1024x1024 canvas, the squircle content area is ~864x864 with
+# ~80px transparent padding on each side
+CONTENT_RATIO = 864 / 1024
+
+DIR_ROOT = os.path.normpath(os.path.join(os.path.dirname(__file__), "..", ".."))
+DIR_SRC = os.path.join(DIR_ROOT, "src", "qt", "res", "src")
+DIR_OUT = os.path.join(DIR_ROOT, "src", "qt", "res", "icons")
+
+# Icon Composer exports to runtime icon map
+ICONS = [
+    ("macos_devnet.png", "dash_macos_devnet.png"),
+    ("macos_mainnet.png", "dash_macos_mainnet.png"),
+    ("macos_regtest.png", "dash_macos_regtest.png"),
+    ("macos_testnet.png", "dash_macos_testnet.png"),
+]
+
+# Canvas to filename mapping for bundle icon
+ICNS_MAP = [
+    (16, "icon_16x16.png"),
+    (32, "icon_16x16@2x.png"),
+    (32, "icon_32x32.png"),
+    (64, "icon_32x32@2x.png"),
+    (128, "icon_128x128.png"),
+    (256, "icon_128x128@2x.png"),
+    (256, "icon_256x256.png"),
+    (512, "icon_256x256@2x.png"),
+    (512, "icon_512x512.png"),
+    (1024, "icon_512x512@2x.png"),
+]
+
+
+def sips_resample_padded(src, dst, canvas_size):
+    content_size = max(round(canvas_size * CONTENT_RATIO), 1)
+    subprocess.check_call(
+        ["sips", "-z", str(content_size), str(content_size), "-p", str(canvas_size), str(canvas_size), src, "--out", dst],
+        stdout=subprocess.DEVNULL,
+    )
+
+
+def generate_icns(tmpdir):
+    iconset = os.path.join(tmpdir, "dash.iconset")
+    os.makedirs(iconset)
+
+    src_main = os.path.join(DIR_SRC, ICONS[1][0])
+    for canvas_px, filename in ICNS_MAP:
+        sips_resample_padded(src_main, os.path.join(iconset, filename), canvas_px)
+
+    icns_out = os.path.join(DIR_OUT, "dash.icns")
+    subprocess.check_call(["iconutil", "-c", "icns", iconset, "-o", icns_out])
+    print(f"Created: {icns_out}")
+
+
+def main():
+    if platform.system() != "Darwin":
+        sys.exit("Error: This script requires macOS (needs sips, iconutil).")
+    for tool in ("sips", "iconutil"):
+        if shutil.which(tool) is None:
+            sys.exit(f"Error: '{tool}' not found. Install Xcode command-line tools.")
+    for src_name, _ in ICONS:
+        src = os.path.join(DIR_SRC, src_name)
+        if not os.path.isfile(src):
+            sys.exit(f"Error: Source image not found: {src}")
+
+    os.makedirs(DIR_OUT, exist_ok=True)
+
+    # Generate bundle icon
+    with tempfile.TemporaryDirectory(prefix="dash_icons_") as tmpdir:
+        generate_icns(tmpdir)
+
+    # Generate runtime icons
+    for src_name, dst_name in ICONS:
+        src = os.path.join(DIR_SRC, src_name)
+        dst = os.path.join(DIR_OUT, dst_name)
+        sips_resample_padded(src, dst, 256)
+        print(f"Created: {dst}")
+
+
+if __name__ == "__main__":
+    main()

src/Makefile.qt.include

@@ -216,6 +216,10 @@ QT_RES_ICONS = \
   qt/res/icons/connect4_16.png \
   qt/res/icons/dash.ico \
   qt/res/icons/dash.png \
+  qt/res/icons/dash_macos_devnet.png \
+  qt/res/icons/dash_macos_mainnet.png \
+  qt/res/icons/dash_macos_regtest.png \
+  qt/res/icons/dash_macos_testnet.png \
   qt/res/icons/dash_testnet.ico \
   qt/res/icons/editcopy.png \
   qt/res/icons/editpaste.png \

src/qt/dash.qrc

@@ -1,6 +1,10 @@
 <!DOCTYPE RCC><RCC version="1.0">
     <qresource prefix="/icons">
         <file alias="dash">res/icons/dash.png</file>
+        <file alias="dash_macos_devnet">res/icons/dash_macos_devnet.png</file>
+        <file alias="dash_macos_mainnet">res/icons/dash_macos_mainnet.png</file>
+        <file alias="dash_macos_regtest">res/icons/dash_macos_regtest.png</file>
+        <file alias="dash_macos_testnet">res/icons/dash_macos_testnet.png</file>
         <file alias="warning">res/icons/warning.png</file>
         <file alias="address-book">res/icons/address-book.png</file>
         <file alias="connect_1">res/icons/connect1_16.png</file>