From f0a5fd33091a989e48a3329c40224cdad42fa355 Mon Sep 17 00:00:00 2001
From: Frederik Gladhorn <frederik.gladhorn@nokia.com>
Date: Wed, 22 Sep 2010 15:08:29 +0200
Subject: Gesture events will be delivered to QGraphicsItems

Refactoring gestures to have a working event delivery
to QGraphicsItem needs the recognizers to accept
graphics mouse events.
---
 gestures.pro                       |  4 ++-
 qdeclarativegesturearea.cpp        |  7 ++--
 qdeclarativegesturerecognizers.cpp | 66 ++++++++++++++++++++++----------------
 3 files changed, 47 insertions(+), 30 deletions(-)

diff --git a/gestures.pro b/gestures.pro
index 2da157d..0efabbe 100644
--- a/gestures.pro
+++ b/gestures.pro
@@ -15,7 +15,9 @@ HEADERS += qdeclarativegesturearea_p.h \
            qdeclarativegesturerecognizers_p.h
 
 QTDIR_build:DESTDIR = $$QT_BUILD_TREE/imports/$$TARGETPATH
-else:DESTDIR = .
+
+#else:DESTDIR = .
+
 target.path = $$[QT_INSTALL_IMPORTS]/$$TARGETPATH
 
 qmldir.files += $$PWD/qmldir
diff --git a/qdeclarativegesturearea.cpp b/qdeclarativegesturearea.cpp
index c5f621f..fafc574 100644
--- a/qdeclarativegesturearea.cpp
+++ b/qdeclarativegesturearea.cpp
@@ -197,6 +197,8 @@ QDeclarativeGestureArea::QDeclarativeGestureArea(QDeclarativeItem *parent) :
 {
     setAcceptedMouseButtons(Qt::LeftButton);
     setAcceptTouchEvents(true);
+
+    //qDebug() << "create plugin gesture area";
 }
 
 QDeclarativeGestureArea::~QDeclarativeGestureArea()
@@ -218,8 +220,9 @@ bool QDeclarativeGestureArea::sceneEvent(QEvent *event)
     case QEvent::GraphicsSceneMousePress:
     case QEvent::MouseButtonPress:
     case QEvent::TouchBegin:
-        event->accept();
-        return true;
+        break;
+        //event->accept();
+        //return true;
     case QEvent::Gesture:
         return d->gestureEvent(static_cast<QGestureEvent *>(event));
     default:
diff --git a/qdeclarativegesturerecognizers.cpp b/qdeclarativegesturerecognizers.cpp
index d8486a0..9d9aeaf 100644
--- a/qdeclarativegesturerecognizers.cpp
+++ b/qdeclarativegesturerecognizers.cpp
@@ -72,8 +72,6 @@ QGesture *QPanGestureRecognizer::create(QObject *target)
 #else
         static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
 #endif
-    } else if (target) {
-        return 0;
     }
     return new QPanGesture;
 }
@@ -280,12 +278,8 @@ QPinchGestureRecognizer::QPinchGestureRecognizer()
 
 QGesture *QPinchGestureRecognizer::create(QObject *target)
 {
-    if (target) {
-        if (target->isWidgetType())
-            static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
-        else
-            return 0;
-    }
+    if (target && target->isWidgetType())
+        static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
     return new QPinchGesture;
 }
 
@@ -481,12 +475,8 @@ QSwipeGestureRecognizer::QSwipeGestureRecognizer()
 
 QGesture *QSwipeGestureRecognizer::create(QObject *target)
 {
-    if (target) {
-        if (target->isWidgetType())
-            static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
-        else
-            return 0;
-    }
+    if (target && target->isWidgetType())
+        static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
     return new QSwipeGesture;
 }
 
@@ -715,23 +705,28 @@ QTapGestureRecognizer::QTapGestureRecognizer()
 
 QGesture *QTapGestureRecognizer::create(QObject *target)
 {
-    if (target) {
-        if (target->isWidgetType())
-            static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
-        else
-            return 0;
-    }
+    if (target && target->isWidgetType())
+        static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
     return new QTapGesture;
 }
 
 QGestureRecognizer::Result QTapGestureRecognizer::recognize(QGesture *state,
-                                                            QObject *,
+                                                            QObject * target,
                                                             QEvent *event)
 {
+//    if (target) {
+//        qDebug() << "QTapGestureRecognizer::recognize";
+//        target->dumpObjectInfo();
+//    }
+
     QTapGesture *q = static_cast<QTapGesture *>(state);
 
     QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
 
+#ifndef QT_NO_GRAPHICSVIEW
+    const QGraphicsSceneMouseEvent *gsme = static_cast<const QGraphicsSceneMouseEvent *>(event);
+#endif
+
     switch (event->type()) {
     case QEvent::TouchBegin: {
 
@@ -759,6 +754,21 @@ QGestureRecognizer::Result QTapGestureRecognizer::recognize(QGesture *state,
         break;
     }
 
+
+#ifndef QT_NO_GRAPHICSVIEW
+    case QEvent::GraphicsSceneMousePress:
+        qDebug() << "GraphicsSceneMousePress in tap rec.";
+        if (!q->property("gotTouched").toBool()) {
+            if (!(gsme->modifiers() & Qt::ControlModifier)) {
+                state->setProperty("position", gsme->screenPos());
+                state->setHotSpot(gsme->screenPos());
+                event->accept();
+                return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
+            }
+        }
+        return QGestureRecognizer::Ignore;
+#endif
+
     case QEvent::MouseButtonPress:
         if (!q->property("gotTouched").toBool()) {
             QMouseEvent *ev = static_cast<QMouseEvent *>(event);
@@ -771,9 +781,15 @@ QGestureRecognizer::Result QTapGestureRecognizer::recognize(QGesture *state,
         }
         return QGestureRecognizer::Ignore;
 
+#ifndef QT_NO_GRAPHICSVIEW
+    case QEvent::GraphicsSceneMouseMove:
+#endif
     case QEvent::MouseMove:
         return QGestureRecognizer::Ignore;
 
+#ifndef QT_NO_GRAPHICSVIEW
+    case QEvent::GraphicsSceneMouseRelease:
+#endif
     case QEvent::MouseButtonRelease:
         if (!q->property("gotTouched").toBool()) {
             if (state->state() == Qt::GestureStarted) {
@@ -820,12 +836,8 @@ QTapAndHoldGestureRecognizer::QTapAndHoldGestureRecognizer()
 
 QGesture *QTapAndHoldGestureRecognizer::create(QObject *target)
 {
-    if (target) {
-        if (target->isWidgetType())
-            static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
-        else
-            return 0;
-    }
+    if (target && target->isWidgetType())
+        static_cast<QWidget *>(target)->setAttribute(Qt::WA_AcceptTouchEvents);
     return new QTapAndHoldGesture;
 }
 
-- 
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