kpixmapregionselectorwidget.h

/* This file is part of the KDE libraries
    Copyright (C) 2004 Antonio Larrosa <larrosa@kde.org
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/
 
#ifndef __KPIXMAPREGIONSELECTORWIDGET_H__
#define __KPIXMAPREGIONSELECTORWIDGET_H__
#include <tqvbox.h>
#include <tqpixmap.h>
#include <tqrect.h>
#include <tqlabel.h>
#include <kimageeffect.h>
 
class TDEPopupMenu;
 
#include <tdelibs_export.h>

class TDEUI_EXPORT KPixmapRegionSelectorWidget : public TQWidget
{
   TQ_OBJECT
public:
   KPixmapRegionSelectorWidget( TQWidget *parent = 0L, const char *name=0L);

   ~KPixmapRegionSelectorWidget();

   void setPixmap( const TQPixmap &pixmap );

   TQPixmap pixmap() const { return m_unzoomedPixmap; }

   void setSelectedRegion(const TQRect &rect);

   TQRect selectedRegion() const;

   TQRect unzoomedSelectedRegion() const;

   void resetSelection();

   TQImage selectedImage() const;

   void setSelectionAspectRatio(int width, int height);

   void setFreeSelectionAspectRatio();
 
   void setMaximumWidgetSize( int width, int height );

   void rotate(KImageEffect::RotateDirection direction);
 
public slots:
   void rotateClockwise();
   void rotateCounterclockwise();
 
protected:
   virtual TDEPopupMenu *createPopupMenu();
 
private:
   bool eventFilter(TQObject *obj, TQEvent *ev);

   void updatePixmap();
 
   TQRect calcSelectionRectangle( const TQPoint &startPoint, const TQPoint & endPoint );
 
   enum CursorState { None=0, Resizing, Moving };
   CursorState m_state;
 
   TQPixmap m_unzoomedPixmap;
   TQPixmap m_originalPixmap;
   TQPixmap m_linedPixmap;
   TQRect   m_selectedRegion;
   TQLabel *m_label;
 
   TQPoint m_tempFirstClick;
   double m_forcedAspectRatio;
 
   int m_maxWidth, m_maxHeight;
   double m_zoomFactor;
};
 
#endif