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:   ?Description

    15 *

    16 */

    17 #ifndef GLXZOOMCONTROL_H

    18 #define GLXZOOMCONTROL_H

    19 #include <hbscrollarea.h>

    20 

    21 class GlxMediaModel;

    22 class QAbstractItemModel;

    23 class HbIconItem;

    24 class GlxImageDecoderWrapper;

    25 class GlxZoomControl : public HbScrollArea

    26 {

    27 Q_OBJECT

    28 

    29 public:

    30 	GlxZoomControl(QGraphicsItem *parent = NULL);

    31 	~GlxZoomControl();

    32 	void setModel (QAbstractItemModel *model);

    33     void indexChanged (int index);

    34 	void setWindowSize (QSize windowSize);

    35 signals:

    36 	void hideFullScreenUi();

    37 public slots:

    38 	void zoomImage(int zoomFactor);

    39 	void decodedImageAvailable();

    40 	void initialZoomFactor(int initZoomFactor);

    41 private:

    42 	void initializeZoomControl(int zoomFactor);

    43 	void resetZoomControl();

    44 	void updateItemPosition();

    45 	void calculatePanOffset();

    46 	void checkandAdjustImageBoundaries(QPointF &finalPos, QPointF undefferedPos);

    47 

    48 private:

    49 	QGraphicsPixmapItem *mZoomItem;

    50 	QGraphicsWidget *mZoomWidget;

    51 	GlxImageDecoderWrapper* mImageDecoder;

    52 	HbIconItem *mBlackBackgroundItem;

    53 	QSizeF mCurrentSize;

    54 	QSizeF mItemSize;

    55 	GlxMediaModel *mModel; //not owned

    56 	int mInitialZoomFactor;

    57 	int mCurrentZoomFactor;

    58 	bool mIsControlActivated;

    59 	bool mIsItemChanged;

    60 	QSize mWindowSize;

    61 	QPointF mPanOffset;

    62 };

    63 #endif //GLXZOOMCONTROL_h