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172 lines
4.5 KiB
172 lines
4.5 KiB
/* ============================================================
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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 : 2005-01-18
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* Description : a widget class to edit perspective.
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*
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* Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
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* Copyright (C) 2006-2007 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
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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 PERSPECTIVEWIDGET_H
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#define PERSPECTIVEWIDGET_H
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// Qt includes.
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#include <qwidget.h>
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#include <qpoint.h>
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#include <qpointarray.h>
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#include <qcolor.h>
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#include <qrect.h>
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// Digikam includes.
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#include "dimg.h"
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// Local includes.
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#include "matrix.h"
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class QPixmap;
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namespace Digikam
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{
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class ImageIface;
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}
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namespace DigikamPerspectiveImagesPlugin
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{
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class PerspectiveWidget : public QWidget
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{
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Q_OBJECT
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public:
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PerspectiveWidget(int width, int height, QWidget *parent=0);
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~PerspectiveWidget();
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QRect getTargetSize(void);
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QPoint getTopLeftCorner(void);
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QPoint getTopRightCorner(void);
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QPoint getBottomLeftCorner(void);
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QPoint getBottomRightCorner(void);
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void reset(void);
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float getAngleTopLeft(void);
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float getAngleTopRight(void);
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float getAngleBottomLeft(void);
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float getAngleBottomRight(void);
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void applyPerspectiveAdjustment(void);
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Digikam::ImageIface* imageIface();
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public slots:
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void slotToggleAntiAliasing(bool a);
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void slotToggleDrawWhileMoving(bool draw);
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void slotToggleDrawGrid(bool grid);
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void slotChangeGuideColor(const QColor &color);
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void slotChangeGuideSize(int size);
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signals:
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void signalPerspectiveChanged( QRect newSize, float topLeftAngle, float topRightAngle,
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float bottomLeftAngle, float bottomRightAngle );
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protected:
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void paintEvent( QPaintEvent *e );
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void resizeEvent( QResizeEvent * e );
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void mousePressEvent ( QMouseEvent * e );
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void mouseReleaseEvent ( QMouseEvent * e );
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void mouseMoveEvent ( QMouseEvent * e );
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private: // Widget methods.
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void updatePixmap(void);
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void transformAffine(Digikam::DImg *orgImage, Digikam::DImg *destImage,
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const Matrix &matrix, Digikam::DColor background);
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QPoint buildPerspective(QPoint orignTopLeft, QPoint orignBottomRight,
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QPoint transTopLeft, QPoint transTopRight,
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QPoint transBottomLeft, QPoint transBottomRight,
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Digikam::DImg *orgImage=0, Digikam::DImg *destImage=0,
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Digikam::DColor background=Digikam::DColor());
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private:
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enum ResizingMode
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{
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ResizingNone = 0,
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ResizingTopLeft,
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ResizingTopRight,
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ResizingBottomLeft,
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ResizingBottomRight
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};
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bool m_antiAlias;
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bool m_drawWhileMoving;
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bool m_drawGrid;
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uint *m_data;
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int m_w;
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int m_h;
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int m_origW;
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int m_origH;
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int m_currentResizing;
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int m_guideSize;
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QRect m_rect;
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// Tranformed center area for mouse position control.
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QPoint m_transformedCenter;
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// Draggable local region selection corners.
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QRect m_topLeftCorner;
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QRect m_topRightCorner;
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QRect m_bottomLeftCorner;
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QRect m_bottomRightCorner;
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QPoint m_topLeftPoint;
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QPoint m_topRightPoint;
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QPoint m_bottomLeftPoint;
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QPoint m_bottomRightPoint;
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QPoint m_spot;
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QColor m_guideColor;
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// 60 points will be stored to compute a grid of 15x15 lines.
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QPointArray m_grid;
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QPixmap *m_pixmap;
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Digikam::ImageIface *m_iface;
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Digikam::DImg m_previewImage;
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};
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} // NameSpace DigikamPerspectiveImagesPlugin
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#endif /* PERSPECTIVEWIDGET_H */
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