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Diffstat (limited to 'digikam/imageplugins/perspective/perspectivewidget.h')
| -rw-r--r-- | digikam/imageplugins/perspective/perspectivewidget.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/digikam/imageplugins/perspective/perspectivewidget.h b/digikam/imageplugins/perspective/perspectivewidget.h new file mode 100644 index 0000000..0fb5126 --- /dev/null +++ b/digikam/imageplugins/perspective/perspectivewidget.h @@ -0,0 +1,171 @@ +/* ============================================================ + * + * 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 + +// Qt includes. + +#include <qwidget.h> +#include <qpoint.h> +#include <qpointarray.h> +#include <qcolor.h> +#include <qrect.h> + +// Digikam includes. + +#include "dimg.h" + +// Local includes. + +#include "matrix.h" + +class QPixmap; + +namespace Digikam +{ +class ImageIface; +} + +namespace DigikamPerspectiveImagesPlugin +{ + +class PerspectiveWidget : public QWidget +{ +Q_OBJECT + +public: + + PerspectiveWidget(int width, int height, QWidget *parent=0); + ~PerspectiveWidget(); + + QRect getTargetSize(void); + QPoint getTopLeftCorner(void); + QPoint getTopRightCorner(void); + QPoint getBottomLeftCorner(void); + QPoint 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 QColor &color); + void slotChangeGuideSize(int size); + +signals: + + void signalPerspectiveChanged( QRect newSize, float topLeftAngle, float topRightAngle, + float bottomLeftAngle, float bottomRightAngle ); + +protected: + + void paintEvent( QPaintEvent *e ); + void resizeEvent( QResizeEvent * e ); + void mousePressEvent ( QMouseEvent * e ); + void mouseReleaseEvent ( QMouseEvent * e ); + void mouseMoveEvent ( QMouseEvent * e ); + +private: // Widget methods. + + void updatePixmap(void); + + void transformAffine(Digikam::DImg *orgImage, Digikam::DImg *destImage, + const Matrix &matrix, Digikam::DColor background); + + QPoint buildPerspective(QPoint orignTopLeft, QPoint orignBottomRight, + QPoint transTopLeft, QPoint transTopRight, + QPoint transBottomLeft, QPoint 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; + + QRect m_rect; + + // Tranformed center area for mouse position control. + + QPoint m_transformedCenter; + + // Draggable local region selection corners. + + QRect m_topLeftCorner; + QRect m_topRightCorner; + QRect m_bottomLeftCorner; + QRect m_bottomRightCorner; + + QPoint m_topLeftPoint; + QPoint m_topRightPoint; + QPoint m_bottomLeftPoint; + QPoint m_bottomRightPoint; + QPoint m_spot; + + QColor m_guideColor; + + // 60 points will be stored to compute a grid of 15x15 lines. + QPointArray m_grid; + + QPixmap *m_pixmap; + + Digikam::ImageIface *m_iface; + Digikam::DImg m_previewImage; +}; + +} // NameSpace DigikamPerspectiveImagesPlugin + +#endif /* PERSPECTIVEWIDGET_H */ |