Force enable fractional-scale-v1 experimental option

Telegram/SourceFiles/core/sandbox.cpp

@@ -21,6 +21,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/local_url_handlers.h"
 #include "core/update_checker.h"
 #include "core/deadlock_detector.h"
+#include "base/options.h"
 #include "base/timer.h"
 #include "base/concurrent_timer.h"
 #include "base/invoke_queued.h"
@@ -37,6 +38,22 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Core {
 namespace {
 
+base::options::toggle OptionForceWaylandFractionalScaling({
+	.id = kOptionForceWaylandFractionalScaling,
+	.name = "Force enable fractional-scale-v1",
+	.description = "Enable fractional-scale-v1 on Wayland without "
+		"precise High DPI scaling. "
+		"Requires Qt with Desktop App Toolkit patches.",
+	.scope = [] {
+#ifdef DESKTOP_APP_QT_PATCHED
+		return Platform::IsWayland();
+#else // DESKTOP_APP_QT_PATCHED
+		return false;
+#endif // !DESKTOP_APP_QT_PATCHED
+	},
+	.restartRequired = true,
+});
+
 QChar _toHex(ushort v) {
 	v = v & 0x000F;
 	return QChar::fromLatin1((v >= 10) ? ('a' + (v - 10)) : ('0' + v));
@@ -77,12 +94,17 @@ QString _escapeFrom7bit(const QString &str) {
 
 } // namespace
 
+const char kOptionForceWaylandFractionalScaling[] = "force-wayland-fractional-scaling";
+
 bool Sandbox::QuitOnStartRequested = false;
 
 Sandbox::Sandbox(int &argc, char **argv)
 : QApplication(argc, argv)
 , _mainThreadId(QThread::currentThreadId()) {
 	setQuitOnLastWindowClosed(false);
+	if (OptionForceWaylandFractionalScaling.value()) {
+		setProperty("_q_force_wayland_fractional_scale", true);
+	}
 }
 
 int Sandbox::start() {

Telegram/SourceFiles/core/sandbox.h

@@ -19,6 +19,8 @@ class QLockFile;
 
 namespace Core {
 
+extern const char kOptionForceWaylandFractionalScaling[];
+
 class UpdateChecker;
 class Application;
 

Telegram/SourceFiles/settings/settings_experimental.cpp

@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/chat/chat_style_radius.h"
 #include "base/options.h"
 #include "core/application.h"
+#include "core/sandbox.h"
 #include "core/launcher.h"
 #include "chat_helpers/tabbed_panel.h"
 #include "dialogs/dialogs_widget.h"
@@ -142,6 +143,7 @@ void SetupExperimental(
 	addToggle(ChatHelpers::kOptionTabbedPanelShowOnClick);
 	addToggle(Dialogs::kOptionForumHideChatsList);
 	addToggle(Core::kOptionFractionalScalingEnabled);
+	addToggle(Core::kOptionForceWaylandFractionalScaling);
 	addToggle(Window::kOptionViewProfileInChatsListContextMenu);
 	addToggle(Info::Profile::kOptionShowPeerIdBelowAbout);
 	addToggle(Ui::GL::kOptionAllowLinuxNvidiaOpenGL);

Telegram/build/docker/centos_env/Dockerfile

@@ -54,7 +54,7 @@ FROM builder AS patches
 RUN git init patches \
 	&& cd patches \
 	&& git remote add origin {{ GIT }}/desktop-app/patches.git \
-	&& git fetch --depth=1 origin c80c0d530200e3f27a9a39b4f230919529e73bd2 \
+	&& git fetch --depth=1 origin 90a7f1b55da69c99699e6b6776268184c20387f8 \
 	&& git reset --hard FETCH_HEAD \
 	&& rm -rf .git
 
@@ -758,8 +758,7 @@ RUN git clone -b {{ QT_TAG }} --depth=1 {{ GIT }}/qt/qt5.git qt_{{ QT }} \
 	&& cd qtbase \
 	&& find ../../patches/qtbase_{{ QT }} -type f -print0 | sort -z | xargs -r0 git apply \
 	&& cd ../qtwayland \
-	&& git fetch origin aae65c885d8e38d8abc2959cded7b5e9e5fc88b3 \
+	&& find ../../patches/qtwayland_{{ QT }} -type f -print0 | sort -z | xargs -r0 git apply \
-	&& git cherry-pick -n FETCH_HEAD \
 	&& cd .. \
 	&& ./configure -prefix "{{ QT_PREFIX }}" \
 		CMAKE_BUILD_TYPE=None \

Telegram/lib_ui

@@ -1 +1 @@
-Subproject commit d6133525dc1649745ac94698c02e533ecc6f0281
+Subproject commit 69c8353746dbb36808b8349eff0cac0f057fa2f4

snap/snapcraft.yaml

@@ -489,8 +489,7 @@ parts:
       git fetch origin v6.5.3
       git checkout FETCH_HEAD
       cd ../qtwayland
-      git fetch origin aae65c885d8e38d8abc2959cded7b5e9e5fc88b3
+      find $CRAFT_STAGE/patches/qtwayland_${QT} -type f -print0 | sort -z | xargs -r0 git apply
-      git cherry-pick -n FETCH_HEAD
       sed -i 's/qMin(version, 8)/qMin(version, 7)/' src/client/qwaylandinputdevice.cpp
       cd ..
     override-build: |