Relay mouse event synthesization information

Make platform plugins, like the windows one, able to indicate
if a mouse event is synthesized from a touch event by the OS.
This will be valuable information for the Quick2 event handlers.

No new member variables are added to QMouseEvent. Instead, the enum
value is encoded in the caps member, there are plenty of bits
available in it.

This introduces Qt::MouseEventSource and QMouseEvent::source() as
public APIs.

Change-Id: If087a0bafb33a6cd7891bd07b84871358f6aba69
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

1 files changed, 12 insertions, 8 deletions

diff --git a/src/gui/kernel/qwindowsysteminterface.cpp b/src/gui/kernel/qwindowsysteminterface.cpp
index d62330083e..5ee9bce540 100644
--- a/src/gui/kernel/qwindowsysteminterface.cpp
+++ b/src/gui/kernel/qwindowsysteminterface.cpp
@@ -161,31 +161,35 @@ void QWindowSystemInterface::handleCloseEvent(QWindow *tlw, bool *accepted)
 \a w == 0 means that the event is in global coords only, \a local will be ignored in this case
 
 */
-void QWindowSystemInterface::handleMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
+void QWindowSystemInterface::handleMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b,
+                                              Qt::KeyboardModifiers mods, Qt::MouseEventSource source)
 {
     unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
-    handleMouseEvent(w, time, local, global, b, mods);
+    handleMouseEvent(w, time, local, global, b, mods, source);
 }
 
-void QWindowSystemInterface::handleMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
+void QWindowSystemInterface::handleMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b,
+                                              Qt::KeyboardModifiers mods, Qt::MouseEventSource source)
 {
     QWindowSystemInterfacePrivate::MouseEvent * e =
-            new QWindowSystemInterfacePrivate::MouseEvent(w, timestamp, local, global, b, mods);
+        new QWindowSystemInterfacePrivate::MouseEvent(w, timestamp, local, global, b, mods, source);
     QWindowSystemInterfacePrivate::handleWindowSystemEvent(e);
 }
 
-void QWindowSystemInterface::handleFrameStrutMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
+void QWindowSystemInterface::handleFrameStrutMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b,
+                                                        Qt::KeyboardModifiers mods, Qt::MouseEventSource source)
 {
     const unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
-    handleFrameStrutMouseEvent(w, time, local, global, b, mods);
+    handleFrameStrutMouseEvent(w, time, local, global, b, mods, source);
 }
 
-void QWindowSystemInterface::handleFrameStrutMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
+void QWindowSystemInterface::handleFrameStrutMouseEvent(QWindow *w, ulong timestamp, const QPointF & local, const QPointF & global, Qt::MouseButtons b,
+                                                        Qt::KeyboardModifiers mods, Qt::MouseEventSource source)
 {
     QWindowSystemInterfacePrivate::MouseEvent * e =
             new QWindowSystemInterfacePrivate::MouseEvent(w, timestamp,
                                                           QWindowSystemInterfacePrivate::FrameStrutMouse,
-                                                          local, global, b, mods);
+                                                          local, global, b, mods, source);
     QWindowSystemInterfacePrivate::handleWindowSystemEvent(e);
 }