Split system drag to a separate method in PiP

Telegram/SourceFiles/media/view/media_view_pip.cpp

@@ -706,8 +706,23 @@ void PipPanel::mouseMoveEvent(QMouseEvent *e) {
 	if (!_dragState
 		&& (point - _pressPoint).manhattanLength() > distance
 		&& !_dragDisabled) {
+		_dragState = _pressState;
+		updateDecorations();
+		_dragStartGeometry = geometry().marginsRemoved(_padding);
+	}
+	if (_dragState) {
 		if (Platform::IsWayland()) {
-			const auto stateEdges = RectPartToQtEdges(*_pressState);
+			startSystemDrag();
+		} else {
+			processDrag(point);
+		}
+	}
+}
+
+void PipPanel::startSystemDrag() {
+	Expects(_dragState.has_value());
+
+	const auto stateEdges = RectPartToQtEdges(*_dragState);
 	if (stateEdges) {
 		if (!Platform::StartSystemResize(windowHandle(), stateEdges)) {
 #if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) || defined DESKTOP_APP_QT_PATCHED
@@ -721,15 +736,6 @@ void PipPanel::mouseMoveEvent(QMouseEvent *e) {
 #endif // Qt >= 5.15 || DESKTOP_APP_QT_PATCHED
 		}
 	}
-			return;
-		}
-		_dragState = _pressState;
-		updateDecorations();
-		_dragStartGeometry = geometry().marginsRemoved(_padding);
-	}
-	if (_dragState) {
-		processDrag(point);
-	}
 }
 
 void PipPanel::processDrag(QPoint point) {
@@ -783,6 +789,9 @@ void PipPanel::finishDrag(QPoint point) {
 	const auto position = pos();
 	const auto clamped = [&] {
 		auto result = position;
+		if (Platform::IsWayland()) {
+			return result;
+		}
 		if (result.x() > screen.x() + screen.width() - inner.width()) {
 			result.setX(screen.x() + screen.width() - inner.width());
 		}

Telegram/SourceFiles/media/view/media_view_pip.h

@@ -83,6 +83,7 @@ private:
 	void setPositionOnScreen(Position position, QRect available);
 
 	QScreen *myScreen() const;
+	void startSystemDrag();
 	void processDrag(QPoint point);
 	void finishDrag(QPoint point);
 	void updatePositionAnimated();