--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/Charms/ExternalEventCharm.cpp Fri Aug 06 17:23:08 2010 -0400
@@ -0,0 +1,119 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as published by
+* the Free Software Foundation, version 2.1 of the License.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program. If not,
+* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".
+*
+* Description:
+*/
+
+#include "ExternalEventCharm.h"
+
+namespace GVA {
+
+const QString ExternalEventCharm::s_mouseClick = "MouseClick";
+static const int KLongPressThreshold = 30;
+
+inline QGraphicsScene *ExternalEventCharm::scene() {
+ QGraphicsObject *item = static_cast<QGraphicsObject*>(m_object);
+ return item->scene();
+}
+
+ExternalEventCharm::ExternalEventCharm(QGraphicsObject *object)
+ : ObjectCharm(object),
+ m_pressed(false)
+{
+}
+
+bool ExternalEventCharm::eventFilter(QObject *object, QEvent *event) {
+ checkForExternalEvent(this, event);
+
+ switch (event->type()) {
+ case QEvent::Show:
+ {
+ scene()->installEventFilter(this);
+ break;
+ }
+ case QEvent::Hide:
+ {
+ scene()->removeEventFilter(this);
+ break;
+ }
+ default: break;
+ }
+
+ // standard event processing
+ return object->eventFilter(object, event);
+}
+
+void ExternalEventCharm::checkForExternalEvent(QObject * o, QEvent * e)
+{
+ Q_UNUSED(o);
+ bool emitClick = false;
+
+ switch (e->type()) {
+ case QEvent::GraphicsSceneMousePress: {
+ QGraphicsSceneMouseEvent * me = static_cast<QGraphicsSceneMouseEvent*>(e);
+ m_pressPos = me->scenePos();
+ m_pressed = true;
+ break;
+ }
+ case QEvent::GraphicsSceneMouseRelease: {
+ // See if we need to send a mouse-click signal.
+ // TODO: When gesture handling is implemented this should be replaced.
+ if(m_pressed) {
+ QGraphicsSceneMouseEvent * me = static_cast<QGraphicsSceneMouseEvent*>(e);
+ QPointF diff = m_pressPos - me->scenePos();
+ if(diff.manhattanLength() < KLongPressThreshold) {
+ emitClick = true;
+ }
+ m_pressed = false;
+ }
+ break;
+ }
+ case QEvent::GraphicsSceneMouseDoubleClick:
+ m_pressed = false;
+ break;
+ default:
+ // Ignore other events.
+ return;
+ }
+
+ QGraphicsSceneMouseEvent * me = static_cast<QGraphicsSceneMouseEvent*>(e);
+ QGraphicsObject *item = static_cast<QGraphicsObject*>(m_object);
+ QRectF itemGeometry = item->sceneBoundingRect();
+
+ if (!itemGeometry.contains(me->scenePos())) {
+ if(emitClick)
+ emit externalMouseEvent(me, s_mouseClick, "");
+ else
+ emitExternalEvent(e);
+ }
+}
+
+void ExternalEventCharm::emitExternalEvent(QEvent * e)
+{
+ QString description;
+
+ QDebug stream(&description);
+ stream << e;
+
+ QString name = description;
+ name.truncate(name.indexOf('('));
+
+ emit externalMouseEvent(e, name, description.trimmed());
+}
+
+
+} // end GVA namepace