From 520a67e50ed7717518d3072f8568de00b791f20a Mon Sep 17 00:00:00 2001
From: "Bradley T. Hughes" <bradley.hughes@nokia.com>
Date: Wed, 29 Apr 2009 15:44:08 +0200
Subject: Use a widget attribute to keep track of whether or not TouchBegin has
 been accepted

---
 src/corelib/global/qnamespace.h     |  1 +
 src/gui/kernel/qapplication.cpp     |  1 +
 src/gui/kernel/qapplication_p.h     |  1 -
 src/gui/kernel/qapplication_win.cpp | 12 +++++-------
 4 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index b73a873..15da2d6 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -486,6 +486,7 @@ public:
         WA_TranslucentBackground = 120,
 
         WA_AcceptTouchEvents = 121,
+        WA_AcceptedTouchBeginEvent = 122,
 
         // Add new attributes before this line
         WA_AttributeCount
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 4e61f66..bc9b827 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -4013,6 +4013,7 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
             res = widget->testAttribute(Qt::WA_AcceptTouchEvents)
                   && d->notify_helper(widget, touchEvent);
             eventAccepted = touchEvent->isAccepted();
+            widget->setAttribute(Qt::WA_AcceptedTouchBeginEvent, res && eventAccepted);
             touchEvent->spont = false;
             if (res && eventAccepted) {
                 // the first widget to accept the TouchBegin gets an implicit grab.
diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index 91857ec..ce7110d 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -429,7 +429,6 @@ public:
 #endif
 
     QPointer<QWidget> currentMultitouchWidget;
-    bool currentMultitouchWidgetAcceptedTouchBegin;
     static void updateTouchPointsForWidget(QWidget *widget, QTouchEvent *touchEvent);
 
 #if defined(Q_WS_WIN)
diff --git a/src/gui/kernel/qapplication_win.cpp b/src/gui/kernel/qapplication_win.cpp
index 7e07104..f1fb0a4 100644
--- a/src/gui/kernel/qapplication_win.cpp
+++ b/src/gui/kernel/qapplication_win.cpp
@@ -4000,7 +4000,6 @@ void QApplicationPrivate::initializeMultitouch()
     CloseTouchInputHandle = static_cast<qt_CloseTouchInputHandlePtr>(library.resolve("CloseTouchInputHandle"));
 
     currentMultitouchWidget = 0;
-    currentMultitouchWidgetAcceptedTouchBegin = false;
     touchInputIDToTouchPointID.clear();
     allTouchPoints.clear();
     currentTouchPoints.clear();
@@ -4106,7 +4105,7 @@ bool QApplicationPrivate::translateTouchEvent(const MSG &msg)
             currentMultitouchWidget = child;
             // if the TouchBegin handler recurses, we assume that means the event
             // has been implicitly accepted and continue to send touch events
-            currentMultitouchWidgetAcceptedTouchBegin = true;
+            currentMultitouchWidget->setAttribute(Qt::WA_AcceptedTouchBeginEvent);
         }
     }
 
@@ -4133,11 +4132,10 @@ bool QApplicationPrivate::translateTouchEvent(const MSG &msg)
         updateTouchPointsForWidget(widget, &touchEvent);
 
         if (sendTouchBegin) {
-            bool res = QApplication::sendSpontaneousEvent(widget, &touchEvent);
-            qt_tabletChokeMouse
-                = currentMultitouchWidgetAcceptedTouchBegin
-                = (res && touchEvent.isAccepted());
-        } else if (currentMultitouchWidgetAcceptedTouchBegin) {
+            bool res = QApplication::sendSpontaneousEvent(widget, &touchEvent)
+                       && touchEvent.isAccepted();
+            qt_tabletChokeMouse = res;
+        } else if (widget->testAttribute(Qt::WA_AcceptedTouchBeginEvent)) {
             (void) QApplication::sendSpontaneousEvent(widget, &touchEvent);
             qt_tabletChokeMouse = true;
         } else {
-- 
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