Add adwaita-qt to Linux for gtk style support

Being set in the environment as QT_STYLE_OVERRIDE=adwaita or
QT_STYLE_OVERRIDE=adwaita-dark, in order to get the theme.

Users with high resolution screens might also need to set
QT_AUTO_SCREEN_SCALE_FACTOR=1 in order to see the icons.

Author: afbjorklund

.github/workflows/linux.yml

@@ -32,6 +32,11 @@ jobs:
           sudo cp -pr squashfs-root/usr/lib/* /usr/lib/
           rm -rf squashfs-root
           chmod -x linuxdeployqt-continuous-x86_64.AppImage
+      - name: cache adwaita-qt
+        uses: actions/cache@v3
+        with:
+          path: adwaita-qt-1.4.2.tar.gz
+          key: adwaita-qt-1.4.2.tar.gz
       - name: build
         run: |
           make build-linux

.github/workflows/tag-and-release.yml

@@ -37,6 +37,11 @@ jobs:
           sudo cp -pr squashfs-root/usr/lib/* /usr/lib/
           rm -rf squashfs-root
           chmod -x linuxdeployqt-continuous-x86_64.AppImage
+      - name: cache adwaita-qt
+        uses: actions/cache@v3
+        with:
+          path: adwaita-qt-1.4.2.tar.gz
+          key: adwaita-qt-1.4.2.tar.gz
       - name: build
         run: |
           make build-linux

GNUmakefile

@@ -17,8 +17,9 @@ build-linux: ## Build minikube-gui for Linux
 	qmake
 	make -f Makefile
 	scripts/build-linux.sh
+	scripts/build-adwaita.sh
 	export VERSION=$(subst v,,$(VERSION)) && \
-	(cd ./bin && linuxdeployqt usr/share/applications/minikube-gui.desktop -verbose=1 -appimage)
+	(cd ./bin && linuxdeployqt usr/share/applications/minikube-gui.desktop -verbose=1 -appimage -executable=usr/plugins/styles/adwaita.so)
 	mv ./bin/*.AppImage ./minikube-gui-linux.AppImage
 	tar -czvf minikube-gui-linux.tar.gz -C ./bin .
 

scripts/build-adwaita.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+ADWAITAQT_VERSION=1.4.2
+
+sudo -n apt-get update ||:
+sudo -n apt-get install -y cmake make pkg-config libx11-dev xcb libx11-xcb-dev libxkbcommon-dev sassc ||:
+
+test -r adwaita-qt-${ADWAITAQT_VERSION}.tar.gz || \
+curl -RLOJ https://github.com/FedoraQt/adwaita-qt/archive/refs/tags/${ADWAITAQT_VERSION}.tar.gz
+mkdir -p bin
+cd bin
+tar xzf ../adwaita-qt-${ADWAITAQT_VERSION}.tar.gz
+cd adwaita-qt-${ADWAITAQT_VERSION}
+patch -p1 <<EOF
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index de9249e..9558d77 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,6 +1,6 @@
+ project(Adwaita)
+ 
+-cmake_minimum_required(VERSION 3.17)
++cmake_minimum_required(VERSION 3.16)
+ 
+ set(ADWAITAQT_VERSION_MAJOR 1)
+ set(ADWAITAQT_VERSION "1.4.2")
+@@ -13,7 +13,7 @@ if (USE_QT6)
+     set(CMAKE_CXX_STANDARD_REQUIRED ON)
+     set(ADWAITAQT_SUFFIX "6")
+ else()
+-    set(QT_MIN_VERSION "5.15.2")
++    set(QT_MIN_VERSION "5.12.8")
+     set(CMAKE_CXX_STANDARD 11)
+     set(CMAKE_CXX_STANDARD_REQUIRED ON)
+     set(ADWAITAQT_SUFFIX "")
+EOF
+mkdir -p build
+cd build
+cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DQT_PLUGINS_DIR=/usr/plugins -DCMAKE_BUILD_TYPE=RelWithDebInfo
+make -j2 VERBOSE=1
+cd ..
+mkdir dest
+make -C build -s install DESTDIR=$PWD/dest
+make -C build -s clean
+cd ..
+set -x
+mkdir -p usr/lib
+cp adwaita-qt-${ADWAITAQT_VERSION}/dest/usr/lib/*/libadwaitaqt.so.1 usr/lib
+cp adwaita-qt-${ADWAITAQT_VERSION}/dest/usr/lib/*/libadwaitaqtpriv.so.1 usr/lib
+mkdir -p usr/plugins/styles
+cp adwaita-qt-${ADWAITAQT_VERSION}/dest/usr/plugins/styles/adwaita.so usr/plugins/styles
+set +x
+rm -r adwaita-qt-${ADWAITAQT_VERSION}
+cd ..