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/* ============================================================
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*
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* This file is a part of digiKam project
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* http://www.digikam.org
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*
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* Date : 2004-08-22
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* Description : a generic widget to display a panel to choose
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* a rectangular image area.
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*
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* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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#ifndef PANICONWIDGET_H
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#define PANICONWIDGET_H
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// TQt includes.
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#include <tqwidget.h>
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#include <tqrect.h>
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#include <tqimage.h>
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// Local includes.
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#include "dimg.h"
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namespace Digikam
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{
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class ImagePanIconWidget;
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class PanIconWidgetPriv;
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class PanIconWidget : public TQWidget
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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PanIconWidget(TQWidget *parent=0, WFlags flags=TQt::WDestructiveClose);
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~PanIconWidget();
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void setImage(int previewWidth, int previewHeight, const TQImage& image);
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void setImage(int previewWidth, int previewHeight, const DImg& image);
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void setRegionSelection(const TQRect& regionSelection);
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TQRect getRegionSelection();
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void setCenterSelection();
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void setCursorToLocalRegionSelectionCenter();
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void setMouseFocus();
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signals:
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// Used with ImagePreview widget.
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// Emit when selection have been moved with mouse. 'targetDone' booleen
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// value is used for indicate if the mouse have been released.
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void signalSelectionMoved(const TQRect& rect, bool targetDone );
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void signalSelectionTakeFocus();
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void signalHiden();
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public slots:
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void slotZoomFactorChanged(double);
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protected:
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void hideEvent(TQHideEvent*);
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void paintEvent(TQPaintEvent*);
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void mousePressEvent(TQMouseEvent*);
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void mouseReleaseEvent(TQMouseEvent*);
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void mouseMoveEvent(TQMouseEvent*);
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void timerEvent(TQTimerEvent*);
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/** Recalculate the target selection position and emit 'signalSelectionMoved'.*/
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void regionSelectionMoved(bool targetDone);
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virtual void updatePixmap();
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protected:
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bool m_flicker;
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int m_timerID;
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int m_width;
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int m_height;
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int m_zoomedOrgWidth;
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int m_zoomedOrgHeight;
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int m_orgWidth;
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int m_orgHeight;
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double m_zoomFactor;
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TQRect m_rect;
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TQRect m_localRegionSelection; // Thumbnail size selection.
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TQPixmap *m_pixmap;
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private:
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PanIconWidgetPriv* d;
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};
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} // NameSpace Digikam
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#endif /* PANICONWIDGET_H */
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