qgsmapoverviewcanvas.h

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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.                                   *
 *                                                                         *
 ***************************************************************************/

#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;

class GUI_EXPORT QgsMapOverviewCanvas : public QWidget
{
    Q_OBJECT

  public:
    QgsMapOverviewCanvas( QWidget * parent = 0, QgsMapCanvas* mapCanvas = NULL );

    ~QgsMapOverviewCanvas();

    void drawExtentRect();

    void refresh();

    void setBackgroundColor( const QColor& color );

    void setLayerSet( const QStringList& layerSet );

    QStringList& layerSet();

    void enableAntiAliasing( bool flag ) { mAntiAliasing = flag; }

    void updateFullExtent();

  public slots:

    void hasCrsTransformEnabled( bool flag );

    void destinationSrsChanged();

  protected:

    void paintEvent( QPaintEvent * pe );

    void resizeEvent( QResizeEvent * e );

    void mouseMoveEvent( QMouseEvent * e );

    void mousePressEvent( QMouseEvent * e );

    void mouseReleaseEvent( QMouseEvent * e );

    void updatePanningWidget( const QPoint& pos );

    QgsPanningWidget* mPanningWidget;

    QPoint mPanningCursorOffset;

    QgsMapCanvas* mMapCanvas;

    QgsMapRenderer* mMapRenderer;

    QPixmap mPixmap;

    QColor mBgColor;

    bool mAntiAliasing;

    QSize mNewSize;
};

#endif