Quantum GIS API Documentation
1.7.4
|
00001 /*************************************************************************** 00002 qgsvertexmarker.cpp - canvas item which shows a simple vertex marker 00003 --------------------- 00004 begin : February 2006 00005 copyright : (C) 2006 by Martin Dobias 00006 email : wonder.sk at gmail dot com 00007 *************************************************************************** 00008 * * 00009 * This program is free software; you can redistribute it and/or modify * 00010 * it under the terms of the GNU General Public License as published by * 00011 * the Free Software Foundation; either version 2 of the License, or * 00012 * (at your option) any later version. * 00013 * * 00014 ***************************************************************************/ 00015 /* $Id$ */ 00016 00017 #include <QPainter> 00018 00019 #include "qgsvertexmarker.h" 00020 00021 00022 QgsVertexMarker::QgsVertexMarker( QgsMapCanvas* mapCanvas ) 00023 : QgsMapCanvasItem( mapCanvas ) 00024 { 00025 mIconSize = 10; 00026 mIconType = ICON_X; 00027 mColor = QColor( 255, 0, 0 ); 00028 mPenWidth = 1; 00029 } 00030 00031 void QgsVertexMarker::setIconType( int type ) 00032 { 00033 mIconType = type; 00034 } 00035 00036 void QgsVertexMarker::setIconSize( int iconSize ) 00037 { 00038 mIconSize = iconSize; 00039 } 00040 00041 void QgsVertexMarker::setCenter( const QgsPoint& point ) 00042 { 00043 mCenter = point; 00044 QPointF pt = toCanvasCoordinates( mCenter ); 00045 setPos( pt ); 00046 } 00047 00048 void QgsVertexMarker::setColor( const QColor& color ) 00049 { 00050 mColor = color; 00051 } 00052 00053 void QgsVertexMarker::setPenWidth( int width ) 00054 { 00055 mPenWidth = width; 00056 } 00057 00058 void QgsVertexMarker::paint( QPainter* p ) 00059 { 00060 qreal s = ( mIconSize - 1 ) / 2; 00061 00062 QPen pen( mColor ); 00063 pen.setWidth( mPenWidth ); 00064 p->setPen( pen ); 00065 00066 switch ( mIconType ) 00067 { 00068 case ICON_NONE: 00069 break; 00070 00071 case ICON_CROSS: 00072 p->drawLine( QLineF( -s, 0, s, 0 ) ); 00073 p->drawLine( QLineF( 0, -s, 0, s ) ); 00074 break; 00075 00076 case ICON_X: 00077 p->drawLine( QLineF( -s, -s, s, s ) ); 00078 p->drawLine( QLineF( -s, s, s, -s ) ); 00079 break; 00080 00081 case ICON_BOX: 00082 p->drawLine( QLineF( -s, -s, s, -s ) ); 00083 p->drawLine( QLineF( s, -s, s, s ) ); 00084 p->drawLine( QLineF( s, s, -s, s ) ); 00085 p->drawLine( QLineF( -s, s, -s, -s ) ); 00086 break; 00087 } 00088 } 00089 00090 00091 QRectF QgsVertexMarker::boundingRect() const 00092 { 00093 qreal s = qreal( mIconSize + mPenWidth ) / 2.0; 00094 return QRectF( -s, -s, 2.0*s, 2.0*s ); 00095 } 00096 00097 void QgsVertexMarker::updatePosition() 00098 { 00099 setCenter( mCenter ); 00100 }