Revive Pointer Lock feature

This change fixes several issues:
- Accepting mouse lock permission from modal dialog was not working on
Linux. XCB needs some time to activate the parent window after accepting
the dialog and we expected to have immediate active focus.
- Implementation of RenderWidgetHostViewBase::IsMouseLocked() was
missing.
- Fixed event.movementX/movementY by disabling ConsolidatedMovementXY
feature. Calculate movement properties in WebEngine instead of blink.

Task-number: QTBUG-83294
Change-Id: Ic03d05c1026a113cf5e8d22544fc508d9f285876
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 0af26314a..c4d6200b7 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -286,6 +286,7 @@ RenderWidgetHostViewQt::RenderWidgetHostViewQt(content::RenderWidgetHost *widget
     , m_adapterClient(0)
     , m_imeInProgress(false)
     , m_receivedEmptyImeEvent(false)
+    , m_isMouseLocked(false)
     , m_imState(0)
     , m_anchorPositionWithinSelection(-1)
     , m_cursorPositionWithinSelection(-1)
@@ -448,6 +449,11 @@ bool RenderWidgetHostViewQt::HasFocus()
     return m_delegate->hasKeyboardFocus();
 }
 
+bool RenderWidgetHostViewQt::IsMouseLocked()
+{
+    return m_isMouseLocked;
+}
+
 bool RenderWidgetHostViewQt::IsSurfaceAvailableForCopy()
 {
     if (m_enableViz)
@@ -520,6 +526,7 @@ bool RenderWidgetHostViewQt::LockMouse(bool)
 {
     m_previousMousePosition = QCursor::pos();
     m_delegate->lockMouse();
+    m_isMouseLocked = true;
     qApp->setOverrideCursor(Qt::BlankCursor);
     return true;
 }
@@ -528,6 +535,7 @@ void RenderWidgetHostViewQt::UnlockMouse()
 {
     m_delegate->unlockMouse();
     qApp->restoreOverrideCursor();
+    m_isMouseLocked = false;
     host()->LostMouseLock();
 }
 
@@ -1784,6 +1792,8 @@ void RenderWidgetHostViewQt::handleFocusEvent(QFocusEvent *ev)
         else if (ev->reason() == Qt::BacktabFocusReason)
             viewHost->SetInitialFocus(true);
         ev->accept();
+
+        m_adapterClient->webContentsAdapter()->handlePendingMouseLockPermission();
     } else if (ev->lostFocus()) {
         host()->SetActive(false);
         host()->LostFocus();