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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2005-01-18
* Description : a widget class to edit perspective.
*
* Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
* Copyright (C) 2006-2007 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
*
* 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 PERSPECTIVEWIDGET_H
#define PERSPECTIVEWIDGET_H
// TQt includes.
#include <tqwidget.h>
#include <tqpoint.h>
#include <tqpointarray.h>
#include <tqcolor.h>
#include <tqrect.h>
// Digikam includes.
#include "dimg.h"
// Local includes.
#include "matrix.h"
class TQPixmap;
namespace Digikam
{
class ImageIface;
}
namespace DigikamPerspectiveImagesPlugin
{
class PerspectiveWidget : public TQWidget
{
TQ_OBJECT
public:
PerspectiveWidget(int width, int height, TQWidget *parent=0);
~PerspectiveWidget();
TQRect getTargetSize(void);
TQPoint getTopLeftCorner(void);
TQPoint getTopRightCorner(void);
TQPoint getBottomLeftCorner(void);
TQPoint getBottomRightCorner(void);
void reset(void);
float getAngleTopLeft(void);
float getAngleTopRight(void);
float getAngleBottomLeft(void);
float getAngleBottomRight(void);
void applyPerspectiveAdjustment(void);
Digikam::ImageIface* imageIface();
public slots:
void slotToggleAntiAliasing(bool a);
void slotToggleDrawWhileMoving(bool draw);
void slotToggleDrawGrid(bool grid);
void slotChangeGuideColor(const TQColor &color);
void slotChangeGuideSize(int size);
signals:
void signalPerspectiveChanged( TQRect newSize, float topLeftAngle, float topRightAngle,
float bottomLeftAngle, float bottomRightAngle );
protected:
void paintEvent( TQPaintEvent *e );
void resizeEvent( TQResizeEvent * e );
void mousePressEvent ( TQMouseEvent * e );
void mouseReleaseEvent ( TQMouseEvent * e );
void mouseMoveEvent ( TQMouseEvent * e );
private: // Widget methods.
void updatePixmap(void);
void transformAffine(Digikam::DImg *orgImage, Digikam::DImg *destImage,
const Matrix &matrix, Digikam::DColor background);
TQPoint buildPerspective(TQPoint orignTopLeft, TQPoint orignBottomRight,
TQPoint transTopLeft, TQPoint transTopRight,
TQPoint transBottomLeft, TQPoint transBottomRight,
Digikam::DImg *orgImage=0, Digikam::DImg *destImage=0,
Digikam::DColor background=Digikam::DColor());
private:
enum ResizingMode
{
ResizingNone = 0,
ResizingTopLeft,
ResizingTopRight,
ResizingBottomLeft,
ResizingBottomRight
};
bool m_antiAlias;
bool m_drawWhileMoving;
bool m_drawGrid;
uint *m_data;
int m_w;
int m_h;
int m_origW;
int m_origH;
int m_currentResizing;
int m_guideSize;
TQRect m_rect;
// Tranformed center area for mouse position control.
TQPoint m_transformedCenter;
// Draggable local region selection corners.
TQRect m_topLeftCorner;
TQRect m_topRightCorner;
TQRect m_bottomLeftCorner;
TQRect m_bottomRightCorner;
TQPoint m_topLeftPoint;
TQPoint m_topRightPoint;
TQPoint m_bottomLeftPoint;
TQPoint m_bottomRightPoint;
TQPoint m_spot;
TQColor m_guideColor;
// 60 points will be stored to compute a grid of 15x15 lines.
TQPointArray m_grid;
TQPixmap *m_pixmap;
Digikam::ImageIface *m_iface;
Digikam::DImg m_previewImage;
};
} // NameSpace DigikamPerspectiveImagesPlugin
#endif /* PERSPECTIVEWIDGET_H */
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