/
qgsmarkersymbollayerv2.cpp
1392 lines (1210 loc) · 42.6 KB
/
qgsmarkersymbollayerv2.cpp
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/***************************************************************************
qgsmarkersymbollayerv2.cpp
---------------------
begin : November 2009
copyright : (C) 2009 by Martin Dobias
email : wonder dot sk at gmail dot com
***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "qgsmarkersymbollayerv2.h"
#include "qgssymbollayerv2utils.h"
#include "qgsdxfexport.h"
#include "qgsdxfpaintdevice.h"
#include "qgsexpression.h"
#include "qgsrendercontext.h"
#include "qgslogger.h"
#include "qgssvgcache.h"
#include <QPainter>
#include <QSvgRenderer>
#include <QFileInfo>
#include <QDir>
#include <QDomDocument>
#include <QDomElement>
#include <cmath>
//////
QgsSimpleMarkerSymbolLayerV2::QgsSimpleMarkerSymbolLayerV2( QString name, QColor color, QColor borderColor, double size, double angle, QgsSymbolV2::ScaleMethod scaleMethod )
: mOutlineWidth( 0 ), mOutlineWidthUnit( QgsSymbolV2::MM )
{
mName = name;
mColor = color;
mBorderColor = borderColor;
mSize = size;
mAngle = angle;
mOffset = QPointF( 0, 0 );
mScaleMethod = scaleMethod;
mSizeUnit = QgsSymbolV2::MM;
mOffsetUnit = QgsSymbolV2::MM;
}
QgsSymbolLayerV2* QgsSimpleMarkerSymbolLayerV2::create( const QgsStringMap& props )
{
QString name = DEFAULT_SIMPLEMARKER_NAME;
QColor color = DEFAULT_SIMPLEMARKER_COLOR;
QColor borderColor = DEFAULT_SIMPLEMARKER_BORDERCOLOR;
double size = DEFAULT_SIMPLEMARKER_SIZE;
double angle = DEFAULT_SIMPLEMARKER_ANGLE;
QgsSymbolV2::ScaleMethod scaleMethod = DEFAULT_SCALE_METHOD;
if ( props.contains( "name" ) )
name = props["name"];
if ( props.contains( "color" ) )
color = QgsSymbolLayerV2Utils::decodeColor( props["color"] );
if ( props.contains( "color_border" ) )
borderColor = QgsSymbolLayerV2Utils::decodeColor( props["color_border"] );
if ( props.contains( "size" ) )
size = props["size"].toDouble();
if ( props.contains( "angle" ) )
angle = props["angle"].toDouble();
if ( props.contains( "scale_method" ) )
scaleMethod = QgsSymbolLayerV2Utils::decodeScaleMethod( props["scale_method"] );
QgsSimpleMarkerSymbolLayerV2* m = new QgsSimpleMarkerSymbolLayerV2( name, color, borderColor, size, angle, scaleMethod );
if ( props.contains( "offset" ) )
m->setOffset( QgsSymbolLayerV2Utils::decodePoint( props["offset"] ) );
if ( props.contains( "offset_unit" ) )
m->setOffsetUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["offset_unit"] ) );
if ( props.contains( "size_unit" ) )
m->setSizeUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["size_unit"] ) );
if ( props.contains( "outline_width" ) )
{
m->setOutlineWidth( props["outline_width"].toDouble() );
}
if ( props.contains( "outline_width_unit" ) )
{
m->setOutlineWidthUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["outline_width_unit"] ) );
}
//data defined properties
if ( props.contains( "name_expression" ) )
{
m->setDataDefinedProperty( "name", props["name_expression"] );
}
if ( props.contains( "color_expression" ) )
{
m->setDataDefinedProperty( "color", props["color_expression"] );
}
if ( props.contains( "color_border_expression" ) )
{
m->setDataDefinedProperty( "color_border", props["color_border_expression"] );
}
if ( props.contains( "outline_width_expression" ) )
{
m->setDataDefinedProperty( "outline_width", props["outline_width_expression"] );
}
if ( props.contains( "size_expression" ) )
{
m->setDataDefinedProperty( "size", props["size_expression"] );
}
if ( props.contains( "angle_expression" ) )
{
m->setDataDefinedProperty( "angle", props["angle_expression"] );
}
if ( props.contains( "offset_expression" ) )
{
m->setDataDefinedProperty( "offset", props["offset_expression"] );
}
return m;
}
QString QgsSimpleMarkerSymbolLayerV2::layerType() const
{
return "SimpleMarker";
}
void QgsSimpleMarkerSymbolLayerV2::startRender( QgsSymbolV2RenderContext& context )
{
QColor brushColor = mColor;
QColor penColor = mBorderColor;
brushColor.setAlphaF( mColor.alphaF() * context.alpha() );
penColor.setAlphaF( mBorderColor.alphaF() * context.alpha() );
mBrush = QBrush( brushColor );
mPen = QPen( penColor );
mPen.setWidthF( mOutlineWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit ) );
QColor selBrushColor = context.renderContext().selectionColor();
QColor selPenColor = selBrushColor == mColor ? selBrushColor : mBorderColor;
if ( context.alpha() < 1 )
{
selBrushColor.setAlphaF( context.alpha() );
selPenColor.setAlphaF( context.alpha() );
}
mSelBrush = QBrush( selBrushColor );
mSelPen = QPen( selPenColor );
mSelPen.setWidthF( mOutlineWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit ) );
bool hasDataDefinedRotation = context.renderHints() & QgsSymbolV2::DataDefinedRotation || dataDefinedProperty( "angle" );
bool hasDataDefinedSize = context.renderHints() & QgsSymbolV2::DataDefinedSizeScale || dataDefinedProperty( "size" );
// use caching only when:
// - size, rotation, shape, color, border color is not data-defined
// - drawing to screen (not printer)
mUsingCache = !hasDataDefinedRotation && !hasDataDefinedSize && !context.renderContext().forceVectorOutput()
&& !dataDefinedProperty( "name" ) && !dataDefinedProperty( "color" ) && !dataDefinedProperty( "color_border" ) && !dataDefinedProperty( "outline_width" ) &&
!dataDefinedProperty( "size" );
// use either QPolygonF or QPainterPath for drawing
// TODO: find out whether drawing directly doesn't bring overhead - if not, use it for all shapes
if ( !prepareShape() ) // drawing as a polygon
{
if ( preparePath() ) // drawing as a painter path
{
// some markers can't be drawn as a polygon (circle, cross)
// For these set the selected border color to the selected color
if ( mName != "circle" )
mSelPen.setColor( selBrushColor );
}
else
{
QgsDebugMsg( "unknown symbol" );
return;
}
}
QMatrix transform;
// scale the shape (if the size is not going to be modified)
if ( !hasDataDefinedSize )
{
double scaledSize = mSize * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mSizeUnit );
if ( mUsingCache )
scaledSize *= context.renderContext().rasterScaleFactor();
double half = scaledSize / 2.0;
transform.scale( half, half );
}
// rotate if the rotation is not going to be changed during the rendering
if ( !hasDataDefinedRotation && mAngle != 0 )
{
transform.rotate( mAngle );
}
if ( !mPolygon.isEmpty() )
mPolygon = transform.map( mPolygon );
else
mPath = transform.map( mPath );
if ( mUsingCache )
{
if ( !prepareCache( context ) )
{
mUsingCache = false;
}
}
else
{
mCache = QImage();
mSelCache = QImage();
}
prepareExpressions( context.layer() );
}
bool QgsSimpleMarkerSymbolLayerV2::prepareCache( QgsSymbolV2RenderContext& context )
{
double scaledSize = mSize * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mSizeUnit );
// calculate necessary image size for the cache
double pw = (( mPen.widthF() == 0 ? 1 : mPen.widthF() ) + 1 ) / 2 * 2; // make even (round up); handle cosmetic pen
int imageSize = (( int ) scaledSize + pw ) / 2 * 2 + 1; // make image width, height odd; account for pen width
double center = imageSize / 2.0;
if ( imageSize > mMaximumCacheWidth )
{
return false;
}
mCache = QImage( QSize( imageSize, imageSize ), QImage::Format_ARGB32_Premultiplied );
mCache.fill( 0 );
QPainter p;
p.begin( &mCache );
p.setRenderHint( QPainter::Antialiasing );
p.setBrush( mBrush );
p.setPen( mPen );
p.translate( QPointF( center, center ) );
drawMarker( &p, context );
p.end();
// Construct the selected version of the Cache
QColor selColor = context.renderContext().selectionColor();
mSelCache = QImage( QSize( imageSize, imageSize ), QImage::Format_ARGB32_Premultiplied );
mSelCache.fill( 0 );
p.begin( &mSelCache );
p.setRenderHint( QPainter::Antialiasing );
p.setBrush( mSelBrush );
p.setPen( mSelPen );
p.translate( QPointF( center, center ) );
drawMarker( &p, context );
p.end();
// Check that the selected version is different. If not, then re-render,
// filling the background with the selection color and using the normal
// colors for the symbol .. could be ugly!
if ( mSelCache == mCache )
{
p.begin( &mSelCache );
p.setRenderHint( QPainter::Antialiasing );
p.fillRect( 0, 0, imageSize, imageSize, selColor );
p.setBrush( mBrush );
p.setPen( mPen );
p.translate( QPointF( center, center ) );
drawMarker( &p, context );
p.end();
}
return true;
}
void QgsSimpleMarkerSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
}
bool QgsSimpleMarkerSymbolLayerV2::prepareShape( QString name )
{
mPolygon.clear();
if ( name.isNull() )
{
name = mName;
}
if ( name == "square" || name == "rectangle" )
{
mPolygon = QPolygonF( QRectF( QPointF( -1, -1 ), QPointF( 1, 1 ) ) );
return true;
}
else if ( name == "diamond" )
{
mPolygon << QPointF( -1, 0 ) << QPointF( 0, 1 )
<< QPointF( 1, 0 ) << QPointF( 0, -1 );
return true;
}
else if ( name == "pentagon" )
{
mPolygon << QPointF( sin( DEG2RAD( 288.0 ) ), - cos( DEG2RAD( 288.0 ) ) )
<< QPointF( sin( DEG2RAD( 216.0 ) ), - cos( DEG2RAD( 216.0 ) ) )
<< QPointF( sin( DEG2RAD( 144.0 ) ), - cos( DEG2RAD( 144.0 ) ) )
<< QPointF( sin( DEG2RAD( 72.0 ) ), - cos( DEG2RAD( 72.0 ) ) )
<< QPointF( 0, -1 );
return true;
}
else if ( name == "triangle" )
{
mPolygon << QPointF( -1, 1 ) << QPointF( 1, 1 ) << QPointF( 0, -1 );
return true;
}
else if ( name == "equilateral_triangle" )
{
mPolygon << QPointF( sin( DEG2RAD( 240.0 ) ), - cos( DEG2RAD( 240.0 ) ) )
<< QPointF( sin( DEG2RAD( 120.0 ) ), - cos( DEG2RAD( 120.0 ) ) )
<< QPointF( 0, -1 );
return true;
}
else if ( name == "star" )
{
double sixth = 1.0 / 3;
mPolygon << QPointF( 0, -1 )
<< QPointF( -sixth, -sixth )
<< QPointF( -1, -sixth )
<< QPointF( -sixth, 0 )
<< QPointF( -1, 1 )
<< QPointF( 0, + sixth )
<< QPointF( 1, 1 )
<< QPointF( + sixth, 0 )
<< QPointF( 1, -sixth )
<< QPointF( + sixth, -sixth );
return true;
}
else if ( name == "regular_star" )
{
double inner_r = cos( DEG2RAD( 72.0 ) ) / cos( DEG2RAD( 36.0 ) );
mPolygon << QPointF( inner_r * sin( DEG2RAD( 324.0 ) ), - inner_r * cos( DEG2RAD( 324.0 ) ) ) // 324
<< QPointF( sin( DEG2RAD( 288.0 ) ) , - cos( DEG2RAD( 288 ) ) ) // 288
<< QPointF( inner_r * sin( DEG2RAD( 252.0 ) ), - inner_r * cos( DEG2RAD( 252.0 ) ) ) // 252
<< QPointF( sin( DEG2RAD( 216.0 ) ) , - cos( DEG2RAD( 216.0 ) ) ) // 216
<< QPointF( 0, inner_r ) // 180
<< QPointF( sin( DEG2RAD( 144.0 ) ) , - cos( DEG2RAD( 144.0 ) ) ) // 144
<< QPointF( inner_r * sin( DEG2RAD( 108.0 ) ), - inner_r * cos( DEG2RAD( 108.0 ) ) ) // 108
<< QPointF( sin( DEG2RAD( 72.0 ) ) , - cos( DEG2RAD( 72.0 ) ) ) // 72
<< QPointF( inner_r * sin( DEG2RAD( 36.0 ) ), - inner_r * cos( DEG2RAD( 36.0 ) ) ) // 36
<< QPointF( 0, -1 ); // 0
return true;
}
else if ( name == "arrow" )
{
mPolygon
<< QPointF( 0, -1 )
<< QPointF( 0.5, -0.5 )
<< QPointF( 0.25, -0.25 )
<< QPointF( 0.25, 1 )
<< QPointF( -0.25, 1 )
<< QPointF( -0.25, -0.5 )
<< QPointF( -0.5, -0.5 );
return true;
}
else if ( name == "filled_arrowhead" )
{
mPolygon << QPointF( 0, 0 ) << QPointF( -1, 1 ) << QPointF( -1, -1 );
return true;
}
return false;
}
bool QgsSimpleMarkerSymbolLayerV2::preparePath( QString name )
{
mPath = QPainterPath();
if ( name.isNull() )
{
name = mName;
}
if ( name == "circle" )
{
mPath.addEllipse( QRectF( -1, -1, 2, 2 ) ); // x,y,w,h
return true;
}
else if ( name == "cross" )
{
mPath.moveTo( -1, 0 );
mPath.lineTo( 1, 0 ); // horizontal
mPath.moveTo( 0, -1 );
mPath.lineTo( 0, 1 ); // vertical
return true;
}
else if ( name == "x" || name == "cross2" )
{
mPath.moveTo( -1, -1 );
mPath.lineTo( 1, 1 );
mPath.moveTo( 1, -1 );
mPath.lineTo( -1, 1 );
return true;
}
else if ( name == "line" )
{
mPath.moveTo( 0, -1 );
mPath.lineTo( 0, 1 ); // vertical line
return true;
}
else if ( name == "arrowhead" )
{
mPath.moveTo( 0, 0 );
mPath.lineTo( -1, -1 );
mPath.moveTo( 0, 0 );
mPath.lineTo( -1, 1 );
return true;
}
return false;
}
void QgsSimpleMarkerSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QPainter *p = context.renderContext().painter();
if ( !p )
{
return;
}
//offset
double offsetX = 0;
double offsetY = 0;
markerOffset( context, offsetX, offsetY );
QPointF off( offsetX, offsetY );
//angle
double angle = mAngle;
QgsExpression* angleExpression = expression( "angle" );
if ( angleExpression )
{
angle = angleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
if ( angle )
off = _rotatedOffset( off, angle );
//data defined shape?
QgsExpression* nameExpression = expression( "name" );
if ( nameExpression )
{
QString name = nameExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
if ( !prepareShape( name ) ) // drawing as a polygon
{
preparePath( name ); // drawing as a painter path
}
}
if ( mUsingCache )
{
// we will use cached image
QImage &img = context.selected() ? mSelCache : mCache;
double s = img.width() / context.renderContext().rasterScaleFactor();
p->drawImage( QRectF( point.x() - s / 2.0 + off.x(),
point.y() - s / 2.0 + off.y(),
s, s ), img );
}
else
{
QMatrix transform;
// move to the desired position
transform.translate( point.x() + off.x(), point.y() + off.y() );
QgsExpression *sizeExpression = expression( "size" );
bool hasDataDefinedSize = context.renderHints() & QgsSymbolV2::DataDefinedSizeScale || sizeExpression;
// resize if necessary
if ( hasDataDefinedSize )
{
double scaledSize = mSize;
if ( sizeExpression )
{
scaledSize = sizeExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
scaledSize *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mSizeUnit );
switch ( mScaleMethod )
{
case QgsSymbolV2::ScaleArea:
scaledSize = sqrt( scaledSize );
break;
case QgsSymbolV2::ScaleDiameter:
break;
}
double half = scaledSize / 2.0;
transform.scale( half, half );
}
bool hasDataDefinedRotation = context.renderHints() & QgsSymbolV2::DataDefinedRotation || angleExpression;
if ( angle != 0 && hasDataDefinedRotation )
transform.rotate( angle );
QgsExpression* colorExpression = expression( "color" );
QgsExpression* colorBorderExpression = expression( "color_border" );
QgsExpression* outlineWidthExpression = expression( "outline_width" );
if ( colorExpression )
{
mBrush.setColor( QgsSymbolLayerV2Utils::decodeColor( colorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
}
if ( colorBorderExpression )
{
mPen.setColor( QgsSymbolLayerV2Utils::decodeColor( colorBorderExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
mSelPen.setColor( QgsSymbolLayerV2Utils::decodeColor( colorBorderExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
}
if ( outlineWidthExpression )
{
double outlineWidth = outlineWidthExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
mPen.setWidthF( outlineWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit ) );
mSelPen.setWidthF( outlineWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit ) );
}
p->setBrush( context.selected() ? mSelBrush : mBrush );
p->setPen( context.selected() ? mSelPen : mPen );
if ( !mPolygon.isEmpty() )
p->drawPolygon( transform.map( mPolygon ) );
else
p->drawPath( transform.map( mPath ) );
}
}
QgsStringMap QgsSimpleMarkerSymbolLayerV2::properties() const
{
QgsStringMap map;
map["name"] = mName;
map["color"] = QgsSymbolLayerV2Utils::encodeColor( mColor );
map["color_border"] = QgsSymbolLayerV2Utils::encodeColor( mBorderColor );
map["size"] = QString::number( mSize );
map["size_unit"] = QgsSymbolLayerV2Utils::encodeOutputUnit( mSizeUnit );
map["angle"] = QString::number( mAngle );
map["offset"] = QgsSymbolLayerV2Utils::encodePoint( mOffset );
map["offset_unit"] = QgsSymbolLayerV2Utils::encodeOutputUnit( mOffsetUnit );
map["scale_method"] = QgsSymbolLayerV2Utils::encodeScaleMethod( mScaleMethod );
map["outline_width"] = QString::number( mOutlineWidth );
map["outline_width_unit"] = QgsSymbolLayerV2Utils::encodeOutputUnit( mOutlineWidthUnit );
//data define properties
saveDataDefinedProperties( map );
return map;
}
QgsSymbolLayerV2* QgsSimpleMarkerSymbolLayerV2::clone() const
{
QgsSimpleMarkerSymbolLayerV2* m = new QgsSimpleMarkerSymbolLayerV2( mName, mColor, mBorderColor, mSize, mAngle, mScaleMethod );
m->setOffset( mOffset );
m->setSizeUnit( mSizeUnit );
m->setOffsetUnit( mOffsetUnit );
m->setOutlineWidth( mOutlineWidth );
m->setOutlineWidthUnit( mOutlineWidthUnit );
copyDataDefinedProperties( m );
return m;
}
void QgsSimpleMarkerSymbolLayerV2::writeSldMarker( QDomDocument &doc, QDomElement &element, QgsStringMap props ) const
{
// <Graphic>
QDomElement graphicElem = doc.createElement( "se:Graphic" );
element.appendChild( graphicElem );
QgsSymbolLayerV2Utils::wellKnownMarkerToSld( doc, graphicElem, mName, mColor, mBorderColor, -1, mSize );
// <Rotation>
QString angleFunc;
bool ok;
double angle = props.value( "angle", "0" ).toDouble( &ok );
if ( !ok )
{
angleFunc = QString( "%1 + %2" ).arg( props.value( "angle", "0" ) ).arg( mAngle );
}
else if ( angle + mAngle != 0 )
{
angleFunc = QString::number( angle + mAngle );
}
QgsSymbolLayerV2Utils::createRotationElement( doc, graphicElem, angleFunc );
// <Displacement>
QgsSymbolLayerV2Utils::createDisplacementElement( doc, graphicElem, mOffset );
}
QString QgsSimpleMarkerSymbolLayerV2::ogrFeatureStyle( double mmScaleFactor, double mapUnitScaleFactor ) const
{
Q_UNUSED( mmScaleFactor );
Q_UNUSED( mapUnitScaleFactor );
#if 0
QString ogrType = "3"; //default is circle
if ( mName == "square" )
{
ogrType = "5";
}
else if ( mName == "triangle" )
{
ogrType = "7";
}
else if ( mName == "star" )
{
ogrType = "9";
}
else if ( mName == "circle" )
{
ogrType = "3";
}
else if ( mName == "cross" )
{
ogrType = "0";
}
else if ( mName == "x" || mName == "cross2" )
{
ogrType = "1";
}
else if ( mName == "line" )
{
ogrType = "10";
}
QString ogrString;
ogrString.append( "SYMBOL(" );
ogrString.append( "id:" );
ogrString.append( "\"" );
ogrString.append( "ogr-sym-" );
ogrString.append( ogrType );
ogrString.append( "\"" );
ogrString.append( ",c:" );
ogrString.append( mColor.name() );
ogrString.append( ",o:" );
ogrString.append( mBorderColor.name() );
ogrString.append( QString( ",s:%1mm" ).arg( mSize ) );
ogrString.append( ")" );
return ogrString;
#endif //0
QString ogrString;
ogrString.append( "PEN(" );
ogrString.append( "c:" );
ogrString.append( mColor.name() );
ogrString.append( ",w:" );
ogrString.append( QString::number( mSize ) );
ogrString.append( "mm" );
ogrString.append( ")" );
return ogrString;
}
QgsSymbolLayerV2* QgsSimpleMarkerSymbolLayerV2::createFromSld( QDomElement &element )
{
QgsDebugMsg( "Entered." );
QDomElement graphicElem = element.firstChildElement( "Graphic" );
if ( graphicElem.isNull() )
return NULL;
QString name = "square";
QColor color, borderColor;
double borderWidth, size;
if ( !QgsSymbolLayerV2Utils::wellKnownMarkerFromSld( graphicElem, name, color, borderColor, borderWidth, size ) )
return NULL;
double angle = 0.0;
QString angleFunc;
if ( QgsSymbolLayerV2Utils::rotationFromSldElement( graphicElem, angleFunc ) )
{
bool ok;
double d = angleFunc.toDouble( &ok );
if ( ok )
angle = d;
}
QPointF offset;
QgsSymbolLayerV2Utils::displacementFromSldElement( graphicElem, offset );
QgsMarkerSymbolLayerV2 *m = new QgsSimpleMarkerSymbolLayerV2( name, color, borderColor, size );
m->setAngle( angle );
m->setOffset( offset );
return m;
}
void QgsSimpleMarkerSymbolLayerV2::drawMarker( QPainter* p, QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
if ( mPolygon.count() != 0 )
{
p->drawPolygon( mPolygon );
}
else
{
p->drawPath( mPath );
}
}
void QgsSimpleMarkerSymbolLayerV2::writeDxf( QgsDxfExport& e, double mmMapUnitScaleFactor, const QString& layerName, const QgsSymbolV2RenderContext* context, const QgsFeature* f, const QPointF& offset ) const
{
//data defined size?
double size = mSize;
QgsExpression *sizeExpression = expression( "size" );
bool hasDataDefinedSize = false;
if ( context )
{
hasDataDefinedSize = context->renderHints() & QgsSymbolV2::DataDefinedSizeScale || sizeExpression;
}
//data defined size
if ( hasDataDefinedSize )
{
if ( sizeExpression )
{
size = sizeExpression->evaluate( const_cast<QgsFeature*>( context->feature() ) ).toDouble();
}
size *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( context->renderContext(), mSizeUnit );
switch ( mScaleMethod )
{
case QgsSymbolV2::ScaleArea:
size = sqrt( size );
break;
case QgsSymbolV2::ScaleDiameter:
break;
}
}
if ( mSizeUnit == QgsSymbolV2::MM )
{
size *= mmMapUnitScaleFactor;
}
double halfSize = size / 2.0;
int colorIndex = QgsDxfExport::closestColorMatch( mBrush.color().rgb() );
//data defined size
//data defined color, rotation, offset
if ( mName == "circle" )
{
e.writeGroup( 0, "CIRCLE" );
e.writeGroup( 8, layerName );
e.writeGroup( 62, colorIndex );
e.writeGroup( 10, halfSize + offset.x() );
e.writeGroup( 20, halfSize + offset.y() );
e.writeGroup( 30, 0.0 );
e.writeGroup( 40, halfSize );
}
else if ( mName == "square" || mName == "rectangle" )
{
QgsPoint pt1( 0.0 + offset.x(), 0.0 + offset.y() );
QgsPoint pt2( size + offset.x(), 0.0 + offset.y() );
QgsPoint pt3( 0.0 + offset.x(), size + offset.y() );
QgsPoint pt4( size + offset.x(), size + offset.y() );
e.writeSolid( layerName, colorIndex, pt1, pt2, pt3, pt4 );
}
else if ( mName == "diamond" )
{
QgsPoint pt1( 0.0 + offset.x(), halfSize + offset.y() );
QgsPoint pt2( halfSize + offset.x(), 0.0 + offset.y() );
QgsPoint pt3( halfSize + offset.x(), size + offset.y() );
QgsPoint pt4( size + offset.x(), halfSize + offset.y() );
e.writeSolid( layerName, colorIndex, pt1, pt2, pt3, pt4 );
}
}
//////////
QgsSvgMarkerSymbolLayerV2::QgsSvgMarkerSymbolLayerV2( QString name, double size, double angle )
{
mPath = QgsSymbolLayerV2Utils::symbolNameToPath( name );
mSize = size;
mAngle = angle;
mOffset = QPointF( 0, 0 );
mOutlineWidth = 1.0;
mOutlineWidthUnit = QgsSymbolV2::MM;
mFillColor = QColor( Qt::black );
mOutlineColor = QColor( Qt::black );
}
QgsSymbolLayerV2* QgsSvgMarkerSymbolLayerV2::create( const QgsStringMap& props )
{
QString name = DEFAULT_SVGMARKER_NAME;
double size = DEFAULT_SVGMARKER_SIZE;
double angle = DEFAULT_SVGMARKER_ANGLE;
if ( props.contains( "name" ) )
name = props["name"];
if ( props.contains( "size" ) )
size = props["size"].toDouble();
if ( props.contains( "angle" ) )
angle = props["angle"].toDouble();
QgsSvgMarkerSymbolLayerV2* m = new QgsSvgMarkerSymbolLayerV2( name, size, angle );
//we only check the svg default parameters if necessary, since it could be expensive
if ( !props.contains( "fill" ) && !props.contains( "outline" ) && !props.contains( "outline-width" ) )
{
QColor fillColor, outlineColor;
double outlineWidth;
bool hasFillParam, hasOutlineParam, hasOutlineWidthParam;
QgsSvgCache::instance()->containsParams( name, hasFillParam, fillColor, hasOutlineParam, outlineColor, hasOutlineWidthParam, outlineWidth );
if ( hasFillParam )
{
m->setFillColor( fillColor );
}
if ( hasOutlineParam )
{
m->setOutlineColor( outlineColor );
}
if ( hasOutlineWidthParam )
{
m->setOutlineWidth( outlineWidth );
}
}
if ( props.contains( "size_unit" ) )
m->setSizeUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["size_unit"] ) );
if ( props.contains( "offset" ) )
m->setOffset( QgsSymbolLayerV2Utils::decodePoint( props["offset"] ) );
if ( props.contains( "offset_unit" ) )
m->setOffsetUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["offset_unit"] ) );
if ( props.contains( "fill" ) )
m->setFillColor( QColor( props["fill"] ) );
if ( props.contains( "outline" ) )
m->setOutlineColor( QColor( props["outline"] ) );
if ( props.contains( "outline-width" ) )
m->setOutlineWidth( props["outline-width"].toDouble() );
if ( props.contains( "outline_width_unit" ) )
m->setOutlineWidthUnit( QgsSymbolLayerV2Utils::decodeOutputUnit( props["outline_width_unit"] ) );
//data defined properties
if ( props.contains( "size_expression" ) )
{
m->setDataDefinedProperty( "size", props["size_expression"] );
}
if ( props.contains( "outline-width_expression" ) )
{
m->setDataDefinedProperty( "outline-width", props["outline-width_expression"] );
}
if ( props.contains( "angle_expression" ) )
{
m->setDataDefinedProperty( "angle", props["angle_expression"] );
}
if ( props.contains( "offset_expression" ) )
{
m->setDataDefinedProperty( "offset", props["offset_expression"] );
}
if ( props.contains( "name_expression" ) )
{
m->setDataDefinedProperty( "name", props["name_expression"] );
}
if ( props.contains( "fill_expression" ) )
{
m->setDataDefinedProperty( "fill", props["fill_expression"] );
}
if ( props.contains( "outline_expression" ) )
{
m->setDataDefinedProperty( "outline", props["outline_expression"] );
}
return m;
}
void QgsSvgMarkerSymbolLayerV2::setPath( QString path )
{
mPath = path;
QColor fillColor, outlineColor;
double outlineWidth;
bool hasFillParam, hasOutlineParam, hasOutlineWidthParam;
QgsSvgCache::instance()->containsParams( path, hasFillParam, fillColor, hasOutlineParam, outlineColor, hasOutlineWidthParam, outlineWidth );
if ( hasFillParam )
{
setFillColor( fillColor );
}
if ( hasOutlineParam )
{
setOutlineColor( outlineColor );
}
if ( hasOutlineWidthParam )
{
setOutlineWidth( outlineWidth );
}
}
QString QgsSvgMarkerSymbolLayerV2::layerType() const
{
return "SvgMarker";
}
void QgsSvgMarkerSymbolLayerV2::startRender( QgsSymbolV2RenderContext& context )
{
mOrigSize = mSize; // save in case the size would be data defined
Q_UNUSED( context );
prepareExpressions( context.layer() );
}
void QgsSvgMarkerSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
}
void QgsSvgMarkerSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QPainter *p = context.renderContext().painter();
if ( !p )
return;
double size = mSize;
QgsExpression* sizeExpression = expression( "size" );
bool hasDataDefinedSize = context.renderHints() & QgsSymbolV2::DataDefinedSizeScale || sizeExpression;
if ( sizeExpression )
{
size = sizeExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
size *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mSizeUnit );
if ( hasDataDefinedSize )
{
switch ( mScaleMethod )
{
case QgsSymbolV2::ScaleArea:
size = sqrt( size );
break;
case QgsSymbolV2::ScaleDiameter:
break;
}
}
//don't render symbols with size below one or above 10,000 pixels
if (( int )size < 1 || 10000.0 < size )
{
return;
}
p->save();
QPointF offset = mOffset;
QgsExpression* offsetExpression = expression( "offset" );
if ( offsetExpression )
{
QString offsetString = offsetExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
offset = QgsSymbolLayerV2Utils::decodePoint( offsetString );
}
double offsetX = offset.x() * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOffsetUnit );
double offsetY = offset.y() * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOffsetUnit );
QPointF outputOffset( offsetX, offsetY );
double angle = mAngle;
QgsExpression* angleExpression = expression( "angle" );
if ( angleExpression )
{
angle = angleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
if ( angle )
outputOffset = _rotatedOffset( outputOffset, angle );
p->translate( point + outputOffset );
bool rotated = !qgsDoubleNear( angle, 0 );
bool drawOnScreen = qgsDoubleNear( context.renderContext().rasterScaleFactor(), 1.0, 0.1 );
if ( rotated )
p->rotate( angle );
QString path = mPath;
QgsExpression* nameExpression = expression( "name" );
if ( nameExpression )
{
path = nameExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
}
double outlineWidth = mOutlineWidth;
QgsExpression* outlineWidthExpression = expression( "outline_width" );
if ( outlineWidthExpression )
{
outlineWidth = outlineWidthExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
QColor fillColor = mFillColor;
QgsExpression* fillExpression = expression( "fill" );
if ( fillExpression )
{
fillColor = QgsSymbolLayerV2Utils::decodeColor( fillExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() );
}
QColor outlineColor = mOutlineColor;