feat: support touch move window

Change-Id: I62743bb492f90c7fa15096abca6d39792794e849

Author: zccrs

src/common/mainwindow.cpp

@@ -2502,6 +2502,10 @@ void MainWindow::delayedMouseReleaseHandler()
 
 void MainWindow::mouseMoveEvent(QMouseEvent *ev)
 {
+    if (_mouseMoved) {
+        return Utility::updateMousePointForWindowMove(this->winId(), ev->globalPos() * devicePixelRatio());
+    }
+
     _mouseMoved = true;
 
     if (windowState() == Qt::WindowNoState || isMaximized()) {

src/common/utility.h

@@ -59,6 +59,11 @@ class Utility
     static xcb_atom_t internAtom(const char *name);
     static void startWindowSystemMove(quint32 WId);
     static void cancelWindowMoveResize(quint32 WId);
+
+    // 在触摸屏下移动窗口时，调用 startWindowSystemMove后，窗管无法grab触摸屏的touch update事件
+    // 导致窗口无法移动。此处跟deepin-wm配合，使用其它方式通知窗管鼠标位置更新了
+    static void updateMousePointForWindowMove(quint32 WId, const QPoint &globalPos);
+
     static void setFrameExtents(quint32 WId, const QMargins &margins);
     static void setRectangles(quint32 WId, const QRegion &region, bool onlyInput = true);
     static void setRectangles(quint32 WId, const QVector<xcb_rectangle_t> &rectangles, bool onlyInput = true);

src/common/utility_x11.cpp

@@ -87,6 +87,27 @@ void Utility::cancelWindowMoveResize(quint32 WId)
     sendMoveResizeMessage(WId, _NET_WM_MOVERESIZE_CANCEL);
 }
 
+void Utility::updateMousePointForWindowMove(quint32 WId, const QPoint &globalPos)
+{
+    xcb_client_message_event_t xev;
+
+    xev.response_type = XCB_CLIENT_MESSAGE;
+    xev.type = internAtom("_DEEPIN_MOVE_UPDATE");
+    xev.window = WId;
+    xev.format = 32;
+    xev.data.data32[0] = globalPos.x();
+    xev.data.data32[1] = globalPos.y();
+    xev.data.data32[2] = 0;
+    xev.data.data32[3] = 0;
+    xev.data.data32[4] = 0;
+
+    xcb_send_event(QX11Info::connection(), false, QX11Info::appRootWindow(),
+                   XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY,
+                   (const char *)&xev);
+
+    xcb_flush(QX11Info::connection());
+}
+
 void Utility::setFrameExtents(quint32 WId, const QMargins &margins)
 {
     xcb_atom_t frameExtents = internAtom("_GTK_FRAME_EXTENTS");