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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-08-22
* Description : a generic widget to display a panel to choose
* a rectangular image area.
*
* 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 PANICONWIDGET_H
#define PANICONWIDGET_H
// TQt includes.
#include <tqwidget.h>
#include <tqrect.h>
#include <tqimage.h>
// Local includes.
#include "dimg.h"
namespace Digikam
{
class ImagePanIconWidget;
class PanIconWidgetPriv;
class PanIconWidget : public TQWidget
{
TQ_OBJECT
public:
PanIconWidget(TQWidget *parent=0, WFlags flags=TQt::WDestructiveClose);
~PanIconWidget();
void setImage(int previewWidth, int previewHeight, const TQImage& image);
void setImage(int previewWidth, int previewHeight, const DImg& image);
void setRegionSelection(const TQRect& regionSelection);
TQRect getRegionSelection();
void setCenterSelection();
void setCursorToLocalRegionSelectionCenter();
void setMouseFocus();
signals:
// Used with ImagePreview widget.
// Emit when selection have been moved with mouse. 'targetDone' booleen
// value is used for indicate if the mouse have been released.
void signalSelectionMoved(const TQRect& rect, bool targetDone );
void signalSelectionTakeFocus();
void signalHiden();
public slots:
void slotZoomFactorChanged(double);
protected:
void hideEvent(TQHideEvent*);
void paintEvent(TQPaintEvent*);
void mousePressEvent(TQMouseEvent*);
void mouseReleaseEvent(TQMouseEvent*);
void mouseMoveEvent(TQMouseEvent*);
void timerEvent(TQTimerEvent*);
/** Recalculate the target selection position and emit 'signalSelectionMoved'.*/
void regionSelectionMoved(bool targetDone);
virtual void updatePixmap();
protected:
bool m_flicker;
int m_timerID;
int m_width;
int m_height;
int m_zoomedOrgWidth;
int m_zoomedOrgHeight;
int m_orgWidth;
int m_orgHeight;
double m_zoomFactor;
TQRect m_rect;
TQRect m_localRegionSelection; // Thumbnail size selection.
TQPixmap *m_pixmap;
private:
PanIconWidgetPriv* d;
};
} // NameSpace Digikam
#endif /* PANICONWIDGET_H */
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