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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-08-17
* Description : a widget to draw an image clip region.
*
* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option)
* any later version.
*
* 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 General Public License for more details.
*
* ============================================================ */
#ifndef IMAGEREGIONWIDGET_H
#define IMAGEREGIONWIDGET_H
// TQt includes.
#include <tqrect.h>
// Local includes.
#include "previewwidget.h"
#include "dimg.h"
#include "digikam_export.h"
namespace Digikam
{
class ImageRegionWidgetPriv;
class DIGIKAM_EXPORT ImageRegionWidget : public PreviewWidget
{
Q_OBJECT
public:
enum SeparateViewMode
{
SeparateViewHorizontal=0,
SeparateViewVertical,
SeparateViewNone,
SeparateViewDuplicateVert,
SeparateViewDuplicateHorz
};
public:
ImageRegionWidget(int wp, int hp, TQWidget *parent=0, bool scrollBar=true);
~ImageRegionWidget();
void setContentsPosition(int x, int y, bool targetDone);
void setCenterContentsPosition();
/** To get image region including original or/and target area depending of separate view mode.
The region is given using not scaled image unit.*/
TQRect getImageRegion();
/** To get target image region area to render */
TQRect getImageRegionToRender();
/** To get target image region image to use for render operations */
DImg getImageRegionImage();
void updatePreviewImage(DImg *img);
void backupPixmapRegion();
void restorePixmapRegion();
void setHighLightPoints(const TQPointArray& pointsList);
void drawSeparateView();
public slots:
void slotSeparateViewToggled(int mode);
private slots:
void slotZoomFactorChanged();
private:
void updatePixmap(DImg& img);
TQRect getLocalTargetImageRegion();
TQRect getLocalImageRegionToRender();
void viewportPaintExtraData();
int previewWidth();
int previewHeight();
bool previewIsNull();
void resetPreview();
void setContentsSize();
void resizeEvent(TQResizeEvent *);
void contentsWheelEvent(TQWheelEvent *);
inline void paintPreview(TQPixmap *pix, int sx, int sy, int sw, int sh);
private:
ImageRegionWidgetPriv* d;
};
} // NameSpace Digikam
#endif /* IMAGEREGIONWIDGET_H */
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