QGIS API Documentation 3.41.0-Master (d5b93354e9c)
Loading...
Searching...
No Matches
qgssnaptogridcanvasitem.h
Go to the documentation of this file.
1/***************************************************************************
2 qgssnaptogridcanvasitem.h
3 ----------------------
4 begin : August 2018
5 copyright : (C) Matthias Kuhn
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSSNAPTOGRIDCANVASITEM_H
17#define QGSSNAPTOGRIDCANVASITEM_H
18
19#include <QObject>
20#include <QPen>
21
23#include "qgsmapcanvasitem.h"
25
26#ifdef SIP_RUN
27//%ModuleHeaderCode
28// For ConvertToSubClassCode.
30//%End
31#endif
32
40#ifndef SIP_RUN
41class GUI_EXPORT QgsSnapToGridCanvasItem : public QObject, public QgsMapCanvasItem
42{
43#else
44class GUI_EXPORT QgsSnapToGridCanvasItem : public QgsMapCanvasItem
45{
46#endif
47
48 Q_OBJECT
49
50#ifdef SIP_RUN
52 if ( dynamic_cast<QgsSnapToGridCanvasItem *>( sipCpp ) )
53 {
54 sipType = sipType_QgsSnapToGridCanvasItem;
55 // We need to tweak the pointer as sip believes it is single inheritance
56 // from QgsMapCanvasItem, but the raw address of QgsSnapToGridCanvasItem (sipCpp)
57 // is actually a QObject
58 *sipCppRet = dynamic_cast<QgsSnapToGridCanvasItem *>( sipCpp );
59 }
60 else
61 sipType = nullptr;
63#endif
64
65 public:
70
71 void paint( QPainter *painter ) override;
72
78 QgsPointXY point() const;
79
85 void setPoint( const QgsPointXY &point );
86
91 double precision() const;
92
97 void setPrecision( double precision );
98
105
111 void setCrs( const QgsCoordinateReferenceSystem &crs );
112
116 bool enabled() const;
117
121 void setEnabled( bool enabled );
122
123 private slots:
124 void updateMapCanvasCrs();
125
126 void updateZoomFactor();
127
128 private:
129 QPen mGridPen = QPen( QColor( 127, 127, 127, 150 ) );
130 QPen mCurrentPointPen = QPen( QColor( 200, 200, 200, 150 ) );
131
132 bool mEnabled = true;
133 bool mAvailableByZoomFactor = false;
134
135 double mPrecision = 0.0;
136 QgsCoordinateTransform mTransform;
137 QgsPointXY mPoint;
138};
139
140#endif // QGSSNAPTOGRIDCANVASITEM_H
This class represents a coordinate reference system (CRS).
Class for doing transforms between two map coordinate systems.
An abstract class for items that can be placed on the map canvas.
Map canvas is a class for displaying all GIS data types on a canvas.
A class to represent a 2D point.
Definition qgspointxy.h:60
Shows a grid on the map canvas given a spatial resolution.
#define SIP_CONVERT_TO_SUBCLASS_CODE(code)
Definition qgis_sip.h:191
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53
#define SIP_END
Definition qgis_sip.h:208
const QgsCoordinateReferenceSystem & crs
int precision