splitViewInterface.h

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//==============================================
//  copyright            : (C) 2003-2005 by Will Stokes
//==============================================
//  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 of the License, or  
//  (at your option) any later version.         
//==============================================
 
#ifndef GUI_EDITING_SPLITVIEWINTERFACE_H
#define GUI_EDITING_SPLITVIEWINTERFACE_H
 
//--------------------
//forward declarations
//--------------------
 
#include <qwidget.h>
#include <qimage.h>
//Added by qt3to4:
#include <QPaintEvent>
#include <QResizeEvent>
#include <QMouseEvent>
 
typedef enum
{  
  SPLIT_VIEW,
  ORIGINAL_IMAGE,
  ADJUSTED_IMAGE,
  INV_SPLIT_VIEW,
} PREVIEW_MODE;
 
typedef enum
{  
  DRAG_SPLIT,
  NO_EFFECT_ON_SPLIT
} PREVIEW_MOUSE_MODE;
 
//=====================================
//=====================================
class SplitViewInterface : public QWidget
{
Q_OBJECT
 
public:
  SplitViewInterface(QWidget *parent=0, 
                     const char* name=0);
  
  void setPreviewMode( PREVIEW_MODE mode, bool forceDrawLabel=false );
  
  virtual QSize sizeHint() const = 0;
  virtual QSize minimumSizeHint() const;
 
  //sets both orig and adjusted images and repaints
  void setImages( QImage origImage, QImage adjustedImage );
 
  void setAdjustedImage( QImage adjustedImage );
 
  QImage& getOrigImage();
  //----------------------
protected:
  void paintEvent( QPaintEvent *e);
  void mousePressEvent( QMouseEvent *e);
  void mouseReleaseEvent( QMouseEvent *);
  void mouseMoveEvent( QMouseEvent *e);
 
  virtual void resizeEvent( QResizeEvent * ) = 0;
  //----------------------
private:
  double displayToWorld( int coordinate );
  
  int worldToDisplay( double coordinate );
 
  bool nearSplitPoint( QPoint p );
  
  PREVIEW_MODE previewMode;  
  
  bool forceDrawLabel;
  
  QString originalString;
  QString adjustedString;
  
  QFont textFont;
 
  double dragOffset;
 
  PREVIEW_MOUSE_MODE mouseMode;
 
  PREVIEW_MOUSE_MODE currentMouseShape;
  
  QImage origImage;
  
  QImage adjustedImage;
  //----------------------
};
//======================
 
#endif //GUI_EDITING_SPLITVIEWINTERFACE_H