Deps: Patch Qt fusion style

Stop the checkboxes having such bright outlines, it looks terrible.

scripts/deps/build-dependencies-linux-cross.sh

@@ -396,6 +396,7 @@ if [ "$SKIP_QT" != true ]; then
 	rm -fr "qtbase-everywhere-src-$QT"
 	tar xf "qtbase-everywhere-src-$QT.tar.xz"
 	cd "qtbase-everywhere-src-$QT"
+	patch -p1 < "$SCRIPTDIR/qtbase-fusion-style.patch"
 	mkdir build
 	cd build
 	../configure -prefix "$INSTALLDIR" -extprefix "$INSTALLDIR" -qt-host-path "$HOSTDIR" -release -dbus runtime -fontconfig -qt-doubleconversion -ssl -openssl-runtime -opengl desktop -qpa xcb,wayland -xkbcommon -xcb -gtk -- -DCMAKE_TOOLCHAIN_FILE="$TOOLCHAINFILE" -DQT_GENERATE_SBOM=OFF -DFEATURE_cups=OFF -DFEATURE_dbus=ON -DFEATURE_dbus_linked=OFF -DFEATURE_icu=OFF -DFEATURE_sql=OFF -DFEATURE_system_png=ON -DFEATURE_system_jpeg=ON -DFEATURE_system_zlib=ON -DFEATURE_system_freetype=ON -DFEATURE_system_harfbuzz=ON

scripts/deps/build-dependencies-linux.sh

@@ -331,6 +331,7 @@ if [ "$SKIP_QT" != true ]; then
 	tar xf "qtbase-everywhere-src-$QT.tar.xz"
 	cd "qtbase-everywhere-src-$QT"
 	patch -p1 < "$SCRIPTDIR/qtbase-disable-pcre2-jit.patch"
+	patch -p1 < "$SCRIPTDIR/qtbase-fusion-style.patch"
 	mkdir build
 	cd build
 	../configure -prefix "$INSTALLDIR" -release -dbus-linked -fontconfig -qt-doubleconversion -ssl -openssl-runtime -opengl desktop -qpa xcb,wayland -xkbcommon -xcb -gtk -- -DQT_GENERATE_SBOM=OFF -DFEATURE_cups=OFF -DFEATURE_dbus=ON -DFEATURE_icu=OFF -DFEATURE_sql=OFF -DFEATURE_system_png=ON -DFEATURE_system_jpeg=ON -DFEATURE_system_zlib=ON -DFEATURE_system_freetype=ON -DFEATURE_system_harfbuzz=ON

scripts/deps/build-dependencies-mac.sh

@@ -269,6 +269,9 @@ rm -fr "qtbase-everywhere-src-$QT"
 tar xf "qtbase-everywhere-src-$QT.tar.xz"
 cd "qtbase-everywhere-src-$QT"
 
+# Stop checkboxes in Fusion theme having such bright outlines.
+patch -p1 < "$SCRIPTDIR/qtbase-fusion-style.patch"
+
 # since we don't have a direct reference to QtSvg, it doesn't deployed directly from the main binary
 # (only indirectly from iconengines), and the libqsvg.dylib imageformat plugin does not get deployed.
 # We could run macdeployqt twice, but that's even more janky than patching it.

scripts/deps/build-dependencies-windows-arm64.bat

@@ -193,6 +193,10 @@ echo Building Qt base...
 rmdir /S /Q "qtbase-everywhere-src-%QT%"
 %SEVENZIP% x "qtbase-everywhere-src-%QT%.zip" || goto error
 cd "qtbase-everywhere-src-%QT%" || goto error
+
+rem Stop checkboxes in Fusion theme having such bright outlines.
+%PATCH% -p1 < "%SCRIPTDIR%\qtbase-fusion-style.patch" || goto error
+
 cmake -B build %ARM64TOOLCHAIN% -DFEATURE_sql=OFF -DCMAKE_INSTALL_PREFIX="%INSTALLDIR%" -DQT_HOST_PATH="%X64INSTALLDIR%" %FORCEPDB% -DQT_GENERATE_SBOM=OFF -DINPUT_ssl=yes -DINPUT_openssl=no -DFEATURE_system_png=ON -DFEATURE_system_jpeg=ON -DFEATURE_system_zlib=ON -DFEATURE_system_freetype=ON -DFEATURE_system_harfbuzz=ON %QTBUILDSPEC% || goto error
 cmake --build build --parallel || goto error
 ninja -C build install || goto error

scripts/deps/build-dependencies-windows-x64.bat

@@ -194,6 +194,9 @@ cd "qtbase-everywhere-src-%QT%" || goto error
 rem Disable the PCRE2 JIT, it doesn't properly verify AVX2 support.
 %PATCH% -p1 < "%SCRIPTDIR%\qtbase-disable-pcre2-jit.patch" || goto error
 
+rem Stop checkboxes in Fusion theme having such bright outlines.
+%PATCH% -p1 < "%SCRIPTDIR%\qtbase-fusion-style.patch" || goto error
+
 cmake -B build -DFEATURE_sql=OFF -DCMAKE_INSTALL_PREFIX="%INSTALLDIR%" %FORCEPDB% -DQT_GENERATE_SBOM=OFF -DINPUT_ssl=yes -DINPUT_openssl=no -DFEATURE_system_png=ON -DFEATURE_system_jpeg=ON -DFEATURE_system_zlib=ON -DFEATURE_system_freetype=ON -DFEATURE_system_harfbuzz=ON %QTBUILDSPEC% || goto error
 cmake --build build --parallel || goto error
 ninja -C build install || goto error

scripts/deps/qtbase-fusion-style.patch

@@ -0,0 +1,19 @@
+--- qtbase/src/widgets/styles/qfusionstyle.cpp	2025-09-03 17:32:08
++++ qtbase/src/widgets/styles/qfusionstyle.cpp	2025-09-03 17:56:20
+@@ -588,11 +588,12 @@
+ 
+             painter->setBrush((state & State_Sunken) ? QBrush(pressedColor) : gradient);
+ 
+-            if (option->state & State_HasFocus && option->state & State_KeyboardFocusChange)
++            if (option->state & State_HasFocus && option->state & State_KeyboardFocusChange) {
+                 painter->setPen(highlightedOutline);
+-            else
+-                painter->setPen(colorScheme() == Qt::ColorScheme::Dark ? outline.lighter(240)
+-                                                                       : outline.lighter(110));
++            } else {
++                const bool isDark = (option->palette.windowText().color().value() > option->palette.window().color().value());
++                painter->setPen(isDark ? outline.lighter(155) : outline.lighter(110));
++            }
+             painter->drawRect(rect);
+ 
+             QColor checkMarkColor = option->palette.text().color().darker(120);