QGIS API Documentation 3.27.0-Master (95e00c50d2)
qgsmapoverviewcanvas.h
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1/***************************************************************************
2 qgsmapoverviewcanvas.h
3 Map canvas subclassed for overview
4 -------------------
5 begin : 09/14/2005
6 copyright : (C) 2005 by Martin Dobias
7 email : won.der at centrum.sk
8 ***************************************************************************/
9
10/***************************************************************************
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 ***************************************************************************/
18
19#ifndef QGSMAPOVERVIEWCANVAS_H
20#define QGSMAPOVERVIEWCANVAS_H
21
22#include <QWidget>
23#include <QPixmap>
24
25class QMouseEvent;
26class QgsMapCanvas;
27class QgsPanningWidget; // defined in .cpp
28class QgsRectangle;
29
31#include "qgsmapsettings.h"
32#include "qgis_gui.h"
33
38class GUI_EXPORT QgsMapOverviewCanvas : public QWidget
39{
40 Q_OBJECT
41
42 public:
43 QgsMapOverviewCanvas( QWidget *parent SIP_TRANSFERTHIS = nullptr, QgsMapCanvas *mapCanvas = nullptr );
44
46 void refresh();
47
49 void setBackgroundColor( const QColor &color );
50
52 void setLayers( const QList<QgsMapLayer *> &layers );
53
55 QList<QgsMapLayer *> layers() const;
56
57 void enableAntiAliasing( bool flag )
58 {
59 mSettings.setFlag( Qgis::MapSettingsFlag::Antialiasing, flag );
61 }
62
63 void updateFullExtent();
64
65 protected slots:
66 void mapRenderingFinished();
67
71 void layerRepaintRequested( bool deferred = false );
72
73 protected:
74
76 void drawExtentRect();
77
79 void destinationCrsChanged();
80
82 void transformContextChanged();
83
85 void paintEvent( QPaintEvent *pe ) override;
86
88 void showEvent( QShowEvent *e ) override;
89
91 void resizeEvent( QResizeEvent *e ) override;
92
94 void mouseMoveEvent( QMouseEvent *e ) override;
95
97 void mousePressEvent( QMouseEvent *e ) override;
98
100 void mouseReleaseEvent( QMouseEvent *e ) override;
101
103 void wheelEvent( QWheelEvent *e ) override;
104
106 void updatePanningWidget( QPoint pos );
107
109 QgsPanningWidget *mPanningWidget = nullptr;
110
113
115 QgsMapCanvas *mMapCanvas = nullptr;
116
118 QPixmap mPixmap;
119
122
124 QgsMapRendererQImageJob *mJob = nullptr;
125};
126
127
128#ifndef SIP_RUN
129
131// Widget that serves as rectangle showing current extent in overview
132class QgsPanningWidget : public QWidget
133{
134 Q_OBJECT
135
136 QPolygon mPoly;
137
138 public:
139 explicit QgsPanningWidget( QWidget *parent );
140
141 void setPolygon( const QPolygon &p );
142
143 void paintEvent( QPaintEvent *pe ) override;
144
145};
147
148#endif
149
150#endif
@ Antialiasing
Enable anti-aliasing for map rendering.
@ HighQualityImageTransforms
Enable high quality image transformations, which results in better appearance of scaled or rotated ra...
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:90
A widget that displays an overview map.
QPoint mPanningCursorOffset
position of cursor inside panning widget
QPixmap mPixmap
pixmap where the map is stored
void enableAntiAliasing(bool flag)
QgsMapSettings mSettings
map settings used for rendering of the overview map
Intermediate base class adding functionality that allows client to query the rendered image.
The QgsMapSettings class contains configuration for rendering of the map.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53