x11/panelwindow: fix multi monitor

Previously attached panels to the virtual desktop geometry instead of
the screen geometry.

src/core/proxywindow.cpp

@@ -140,6 +140,8 @@ void ProxyWindowBase::completeWindow() {
 	if (this->mScreen != nullptr && this->window->screen() != this->mScreen) {
 		if (this->window->isVisible()) this->window->setVisible(false);
 		this->window->setScreen(this->mScreen);
+	} else if (this->mScreen == nullptr) {
+		this->mScreen = this->window->screen();
 	}
 
 	this->setWidth(this->mWidth);
@@ -259,7 +261,6 @@ void ProxyWindowBase::setScreen(QuickshellScreenInfo* screen) {
 	}
 
 	if (this->window == nullptr) {
-		this->mScreen = qscreen;
 		emit this->screenChanged();
 	} else {
 		auto reshow = this->isVisibleDirect();
@@ -267,6 +268,9 @@ void ProxyWindowBase::setScreen(QuickshellScreenInfo* screen) {
 		if (this->window != nullptr) this->window->setScreen(qscreen);
 		if (reshow) this->setVisibleDirect(true);
 	}
+
+	if (qscreen) this->mScreen = qscreen;
+	else this->mScreen = this->window->screen();
 }
 
 void ProxyWindowBase::onScreenDestroyed() { this->mScreen = nullptr; }

src/x11/panel_window.cpp

@@ -88,10 +88,13 @@ void XPanelWindow::connectWindow() {
 
 	this->window->installEventFilter(&this->eventFilter);
 	this->connectScreen();
-	// clang-format off
-	QObject::connect(this->window, &QQuickWindow::screenChanged, this, &XPanelWindow::connectScreen);
-	QObject::connect(this->window, &QQuickWindow::visibleChanged, this, &XPanelWindow::updatePanelStack);
-	// clang-format on
+
+	QObject::connect(
+	    this->window,
+	    &QQuickWindow::visibleChanged,
+	    this,
+	    &XPanelWindow::updatePanelStack
+	);
 
 	// qt overwrites _NET_WM_STATE, so we have to use the qt api
 	// QXcbWindow::WindowType::Dock in qplatformwindow_p.h
@@ -129,6 +132,11 @@ void XPanelWindow::setHeight(qint32 height) {
 	}
 }
 
+void XPanelWindow::setScreen(QuickshellScreenInfo* screen) {
+	this->ProxyWindowBase::setScreen(screen);
+	this->connectScreen();
+}
+
 Anchors XPanelWindow::anchors() const { return this->mAnchors; }
 
 void XPanelWindow::setAnchors(Anchors anchors) {
@@ -210,7 +218,7 @@ void XPanelWindow::connectScreen() {
 		QObject::disconnect(this->mTrackedScreen, nullptr, this, nullptr);
 	}
 
-	this->mTrackedScreen = this->window->screen();
+	this->mTrackedScreen = this->mScreen;
 
 	if (this->mTrackedScreen != nullptr) {
 		QObject::connect(
@@ -220,12 +228,15 @@ void XPanelWindow::connectScreen() {
 		    &XPanelWindow::updateDimensions
 		);
 	}
+
+	this->updateDimensions();
 }
 
 void XPanelWindow::updateDimensions() {
-	if (this->window == nullptr || this->window->handle() == nullptr) return;
+	if (this->window == nullptr || this->window->handle() == nullptr || this->mScreen == nullptr)
+		return;
 
-	auto screenGeometry = this->window->screen()->virtualGeometry();
+	auto screenGeometry = this->mScreen->geometry();
 
 	if (this->mExclusionMode != ExclusionMode::Ignore) {
 		for (auto* panel: XPanelStack::instance()->panels(this)) {
@@ -235,6 +246,8 @@ void XPanelWindow::updateDimensions() {
 			// we only care about windows in the same layer
 			if (panel->mAboveWindows != this->mAboveWindows) continue;
 
+			if (panel->mScreen != this->mScreen) continue;
+
 			int side = -1;
 			quint32 exclusiveZone = 0;
 			panel->getExclusion(side, exclusiveZone);

src/x11/panel_window.hpp

@@ -49,6 +49,8 @@ public:
 	void setWidth(qint32 width) override;
 	void setHeight(qint32 height) override;
 
+	void setScreen(QuickshellScreenInfo* screen) override;
+
 	[[nodiscard]] Anchors anchors() const;
 	void setAnchors(Anchors anchors);
 
@@ -77,11 +79,11 @@ signals:
 
 private slots:
 	void xInit();
-	void connectScreen();
 	void updateDimensions();
 	void updatePanelStack();
 
 private:
+	void connectScreen();
 	void getExclusion(int& side, quint32& exclusiveZone);
 	void updateStrut();
 	void updateAboveWindows();