mpviewplugins/mpcollectionviewplugin/src/mpsnapshotwidget.cpp
branchRCL_3
changeset 52 14979e23cb5e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpviewplugins/mpcollectionviewplugin/src/mpsnapshotwidget.cpp	Tue Aug 31 15:12:29 2010 +0300
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Music Player now playing widget.
+*
+*/
+
+#include <QPainter>
+#include <QImage>
+#include <QGraphicsView>
+
+#include "mpsnapshotwidget.h"
+#include "mptrace.h"
+
+/*!
+    \class MpSnapshotWidget
+    \brief Custom HB widget that grabs a snapshot of the graphics view.
+
+    This widget grabs a snapshot of the graphics view so it can be drawn as 
+    a decoy for transitios or fast ui response simulation.
+*/
+
+
+/*!
+ Constructs the snapshot widget.
+ */
+MpSnapshotWidget::MpSnapshotWidget( QGraphicsItem *parent )
+    : HbWidget(parent),
+      mSnapshot(0)
+{
+    TX_ENTRY_ARGS( " Parent=" << (void *)parent )
+    setFlag( QGraphicsItem::ItemHasNoContents, false );
+    TX_EXIT
+}
+
+/*!
+ Destructs the snapshot widget.
+ */
+MpSnapshotWidget::~MpSnapshotWidget()
+{
+    TX_ENTRY
+    if (mSnapshot)
+     delete mSnapshot;
+    TX_EXIT
+}
+
+/*!
+ Takes a snapshot of an \a item within \a graphicsView, also sets its position
+  and geometry so it can be used as a decoy for that itme.
+ */
+void MpSnapshotWidget::capture(QGraphicsView *graphicsView, QGraphicsItem *item)
+{
+    TX_ENTRY
+    if (mSnapshot){
+        delete mSnapshot;
+        mSnapshot = 0;
+    }
+    setGeometry(QRect(QPoint(0,0),item->sceneBoundingRect().toRect().size()));
+    setPos(item->sceneBoundingRect().toRect().topLeft());
+    mSnapshot = new QImage(
+            item->sceneBoundingRect().toRect().size() , 
+            QImage::Format_ARGB32_Premultiplied);
+    QPainter p( mSnapshot);
+    graphicsView->render( &p, rect(), item->sceneBoundingRect().toRect());
+    TX_EXIT
+}
+
+/*!
+    \reimp
+ */
+void MpSnapshotWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    TX_ENTRY
+    Q_UNUSED(widget)
+    Q_UNUSED(option)
+    if (mSnapshot) {
+        painter->drawImage( rect(), *mSnapshot );
+    }
+    TX_EXIT
+}