1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: Music Player now playing widget.

    15 *

    16 */

    17 

    18 #include <QPainter>

    19 #include <QImage>

    20 #include <QGraphicsView>

    21 

    22 #include "mpsnapshotwidget.h"

    23 #include "mptrace.h"

    24 

    25 /*!

    26     \class MpSnapshotWidget

    27     \brief Custom HB widget that grabs a snapshot of the graphics view.

    28 

    29     This widget grabs a snapshot of the graphics view so it can be drawn as 

    30     a decoy for transitios or fast ui response simulation.

    31 */

    32 

    33 

    34 /*!

    35  Constructs the snapshot widget.

    36  */

    37 MpSnapshotWidget::MpSnapshotWidget( QGraphicsItem *parent )

    38     : HbWidget(parent),

    39       mSnapshot(0)

    40 {

    41     TX_ENTRY_ARGS( " Parent=" << (void *)parent )

    42     setFlag( QGraphicsItem::ItemHasNoContents, false );

    43     TX_EXIT

    44 }

    45 

    46 /*!

    47  Destructs the snapshot widget.

    48  */

    49 MpSnapshotWidget::~MpSnapshotWidget()

    50 {

    51     TX_ENTRY

    52     if (mSnapshot)

    53      delete mSnapshot;

    54     TX_EXIT

    55 }

    56 

    57 /*!

    58  Takes a snapshot of an \a item within \a graphicsView, also sets its position

    59   and geometry so it can be used as a decoy for that itme.

    60  */

    61 void MpSnapshotWidget::capture(QGraphicsView *graphicsView, QGraphicsItem *item)

    62 {

    63     TX_ENTRY

    64     if (mSnapshot){

    65         delete mSnapshot;

    66         mSnapshot = 0;

    67     }

    68     setGeometry(QRect(QPoint(0,0),item->sceneBoundingRect().toRect().size()));

    69     setPos(item->sceneBoundingRect().toRect().topLeft());

    70     mSnapshot = new QImage(

    71             item->sceneBoundingRect().toRect().size() , 

    72             QImage::Format_ARGB32_Premultiplied);

    73     QPainter p( mSnapshot);

    74     graphicsView->render( &p, rect(), item->sceneBoundingRect().toRect());

    75     TX_EXIT

    76 }

    77 

    78 /*!

    79     \reimp

    80  */

    81 void MpSnapshotWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

    82 {

    83     TX_ENTRY

    84     Q_UNUSED(widget)

    85     Q_UNUSED(option)

    86     if (mSnapshot) {

    87         painter->drawImage( rect(), *mSnapshot );

    88     }

    89     TX_EXIT

    90 }