Quantum GIS API Documentation  1.7.4
src/gui/qgsmapoverviewcanvas.h
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00001 /***************************************************************************
00002                            qgsmapoverviewcanvas.h
00003                       Map canvas subclassed for overview
00004                               -------------------
00005     begin                : 09/14/2005
00006     copyright            : (C) 2005 by Martin Dobias
00007     email                : won.der at centrum.sk
00008  ***************************************************************************/
00009 
00010 /***************************************************************************
00011  *                                                                         *
00012  *   This program is free software; you can redistribute it and/or modify  *
00013  *   it under the terms of the GNU General Public License as published by  *
00014  *   the Free Software Foundation; either version 2 of the License, or     *
00015  *   (at your option) any later version.                                   *
00016  *                                                                         *
00017  ***************************************************************************/
00018 /* $Id$ */
00019 
00020 #ifndef QGSMAPOVERVIEWCANVAS_H
00021 #define QGSMAPOVERVIEWCANVAS_H
00022 
00023 
00024 #include <QMouseEvent>
00025 #include <QWheelEvent>
00026 #include <QWidget>
00027 #include <QStringList>
00028 #include <QPixmap>
00029 
00030 class QgsMapCanvas;
00031 class QgsMapRenderer;
00032 class QgsPanningWidget; // defined in .cpp
00033 class QgsRectangle;
00034 
00038 class GUI_EXPORT QgsMapOverviewCanvas : public QWidget
00039 {
00040     Q_OBJECT
00041 
00042   public:
00043     QgsMapOverviewCanvas( QWidget * parent = 0, QgsMapCanvas* mapCanvas = NULL );
00044 
00045     ~QgsMapOverviewCanvas();
00046 
00048     void drawExtentRect();
00049 
00051     void refresh();
00052 
00054     void setBackgroundColor( const QColor& color );
00055 
00057     void setLayerSet( const QStringList& layerSet );
00058 
00059     QStringList& layerSet();
00060 
00061     void enableAntiAliasing( bool flag ) { mAntiAliasing = flag; }
00062 
00063     void updateFullExtent( const QgsRectangle& rect );
00064 
00065   public slots:
00066 
00067     void hasCrsTransformEnabled( bool flag );
00068 
00069     void destinationSrsChanged();
00070 
00071   protected:
00072 
00074     void paintEvent( QPaintEvent * pe );
00075 
00077     void resizeEvent( QResizeEvent * e );
00078 
00080     void mouseMoveEvent( QMouseEvent * e );
00081 
00083     void mousePressEvent( QMouseEvent * e );
00084 
00086     void mouseReleaseEvent( QMouseEvent * e );
00087 
00089     void updatePanningWidget( const QPoint& pos );
00090 
00092     QgsPanningWidget* mPanningWidget;
00093 
00095     QPoint mPanningCursorOffset;
00096 
00098     QgsMapCanvas* mMapCanvas;
00099 
00101     QgsMapRenderer* mMapRenderer;
00102 
00104     QPixmap mPixmap;
00105 
00107     QColor mBgColor;
00108 
00110     bool mAntiAliasing;
00111 
00113     QSize mNewSize;
00114 };
00115 
00116 #endif
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