/usr/include/qgis/qgsmapoverviewcanvas.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
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qgsmapoverviewcanvas.h
Map canvas subclassed for overview
-------------------
begin : 09/14/2005
copyright : (C) 2005 by Martin Dobias
email : won.der at centrum.sk
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
/* $Id$ */
#ifndef QGSMAPOVERVIEWCANVAS_H
#define QGSMAPOVERVIEWCANVAS_H
#include <QMouseEvent>
#include <QWheelEvent>
#include <QWidget>
#include <QStringList>
#include <QPixmap>
class QgsMapCanvas;
class QgsMapRenderer;
class QgsPanningWidget; // defined in .cpp
class QgsRectangle;
/** \ingroup gui
* A widget that displays an overview map.
*/
class GUI_EXPORT QgsMapOverviewCanvas : public QWidget
{
Q_OBJECT
public:
QgsMapOverviewCanvas( QWidget * parent = 0, QgsMapCanvas* mapCanvas = NULL );
~QgsMapOverviewCanvas();
//! used for overview canvas to reflect changed extent in main map canvas
void drawExtentRect();
//! renders overview and updates panning widget
void refresh();
//! changes background color
void setBackgroundColor( const QColor& color );
//! updates layer set for overview
void setLayerSet( const QStringList& layerSet );
QStringList& layerSet();
void enableAntiAliasing( bool flag ) { mAntiAliasing = flag; }
void updateFullExtent( const QgsRectangle& rect );
public slots:
void hasCrsTransformEnabled( bool flag );
void destinationSrsChanged();
protected:
//! Overridden paint event
void paintEvent( QPaintEvent * pe );
//! Overridden resize event
void resizeEvent( QResizeEvent * e );
//! Overridden mouse move event
void mouseMoveEvent( QMouseEvent * e );
//! Overridden mouse press event
void mousePressEvent( QMouseEvent * e );
//! Overridden mouse release event
void mouseReleaseEvent( QMouseEvent * e );
//! called when panning to reflect mouse movement
void updatePanningWidget( const QPoint& pos );
//! widget for panning map in overview
QgsPanningWidget* mPanningWidget;
//! position of cursor inside panning widget
QPoint mPanningCursorOffset;
//! main map canvas - used to get/set extent
QgsMapCanvas* mMapCanvas;
//! for rendering overview
QgsMapRenderer* mMapRenderer;
//! pixmap where the map is stored
QPixmap mPixmap;
//! background color
QColor mBgColor;
//! indicates whether antialiasing will be used for rendering
bool mAntiAliasing;
//! resized canvas size
QSize mNewSize;
};
#endif
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