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qgsmarkersymbollayerv2.cpp
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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 "qgsrendercontext.h"
#include "qgsapplication.h"
#include "qgslogger.h"
#include "qgsproject.h"
#include "qgssvgcache.h"
#include <QPainter>
#include <QSvgRenderer>
#include <QFileInfo>
#include <QDir>
#include <QDomDocument>
#include <QDomElement>
#include <cmath>
// MSVC compiler doesn't have defined M_PI in math.h
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#define DEG2RAD(x) ((x)*M_PI/180)
static QPointF _rotatedOffset( const QPointF& offset, double angle )
{
angle = DEG2RAD( angle );
double c = cos( angle ), s = sin( angle );
return QPointF( offset.x() * c - offset.y() * s, offset.x() * s + offset.y() * c );
}
//////
QgsSimpleMarkerSymbolLayerV2::QgsSimpleMarkerSymbolLayerV2( QString name, QColor color, QColor borderColor, double size, double angle, QgsSymbolV2::ScaleMethod scaleMethod )
{
mName = name;
mColor = color;
mBorderColor = borderColor;
mSize = size;
mAngle = angle;
mOffset = QPointF( 0, 0 );
mScaleMethod = scaleMethod;
}
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"] ) );
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( context.outputLineWidth( mPen.widthF() ) );
QColor selBrushColor = context.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( context.outputLineWidth( mPen.widthF() ) );
bool hasDataDefinedRotation = context.renderHints() & QgsSymbolV2::DataDefinedRotation;
bool hasDataDefinedSize = context.renderHints() & QgsSymbolV2::DataDefinedSizeScale;
// use caching only when:
// - the size and rotation is not data-defined
// - drawing to screen (not printer)
mUsingCache = !hasDataDefinedRotation && !hasDataDefinedSize && !context.renderContext().forceVectorOutput();
// 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 = context.outputLineWidth( mSize );
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 )
{
prepareCache( context );
}
else
{
mCache = QImage();
mSelCache = QImage();
}
}
void QgsSimpleMarkerSymbolLayerV2::prepareCache( QgsSymbolV2RenderContext& context )
{
double scaledSize = context.outputPixelSize( mSize );
// 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 = (( double ) imageSize / 2 ) + 0.5; // add 1/2 pixel for proper rounding when the figure's coordinates are added
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.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();
}
}
void QgsSimpleMarkerSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
}
bool QgsSimpleMarkerSymbolLayerV2::prepareShape()
{
mPolygon.clear();
if ( mName == "square" || mName == "rectangle" )
{
mPolygon = QPolygonF( QRectF( QPointF( -1, -1 ), QPointF( 1, 1 ) ) );
return true;
}
else if ( mName == "diamond" )
{
mPolygon << QPointF( -1, 0 ) << QPointF( 0, 1 )
<< QPointF( 1, 0 ) << QPointF( 0, -1 );
return true;
}
else if ( mName == "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 ( mName == "triangle" )
{
mPolygon << QPointF( -1, 1 ) << QPointF( 1, 1 ) << QPointF( 0, -1 );
return true;
}
else if ( mName == "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 ( mName == "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 ( mName == "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 ( mName == "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 ( mName == "filled_arrowhead" )
{
mPolygon << QPointF( 0, 0 ) << QPointF( -1, 1 ) << QPointF( -1, -1 );
return true;
}
return false;
}
bool QgsSimpleMarkerSymbolLayerV2::preparePath()
{
mPath = QPainterPath();
if ( mName == "circle" )
{
mPath.addEllipse( QRectF( -1, -1, 2, 2 ) ); // x,y,w,h
return true;
}
else if ( mName == "cross" )
{
mPath.moveTo( -1, 0 );
mPath.lineTo( 1, 0 ); // horizontal
mPath.moveTo( 0, -1 );
mPath.lineTo( 0, 1 ); // vertical
return true;
}
else if ( mName == "x" || mName == "cross2" )
{
mPath.moveTo( -1, -1 );
mPath.lineTo( 1, 1 );
mPath.moveTo( 1, -1 );
mPath.lineTo( -1, 1 );
return true;
}
else if ( mName == "line" )
{
mPath.moveTo( 0, -1 );
mPath.lineTo( 0, 1 ); // vertical line
return true;
}
else if ( mName == "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 )
{
QgsRenderContext& rc = context.renderContext();
QPainter* p = rc.painter();
if ( !p )
{
return;
}
QPointF off( context.outputLineWidth( mOffset.x() ), context.outputLineWidth( mOffset.y() ) );
if ( mAngle )
off = _rotatedOffset( off, mAngle );
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;
bool hasDataDefinedRotation = context.renderHints() & QgsSymbolV2::DataDefinedRotation;
bool hasDataDefinedSize = context.renderHints() & QgsSymbolV2::DataDefinedSizeScale;
// move to the desired position
transform.translate( point.x() + off.x(), point.y() + off.y() );
// resize if necessary
if ( hasDataDefinedSize )
{
double scaledSize = context.outputLineWidth( mSize );
switch ( mScaleMethod )
{
case QgsSymbolV2::ScaleArea:
scaledSize = sqrt( scaledSize );
break;
case QgsSymbolV2::ScaleDiameter:
break;
}
double half = scaledSize / 2.0;
transform.scale( half, half );
}
// rotate if necessary
if ( mAngle != 0 && hasDataDefinedRotation )
{
transform.rotate( mAngle );
}
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["angle"] = QString::number( mAngle );
map["offset"] = QgsSymbolLayerV2Utils::encodePoint( mOffset );
map["scale_method"] = QgsSymbolLayerV2Utils::encodeScaleMethod( mScaleMethod );
return map;
}
QgsSymbolLayerV2* QgsSimpleMarkerSymbolLayerV2::clone() const
{
QgsSimpleMarkerSymbolLayerV2* m = new QgsSimpleMarkerSymbolLayerV2( mName, mColor, mBorderColor, mSize, mAngle, mScaleMethod );
m->setOffset( mOffset );
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 );
}
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 );
}
}
//////////
QgsSvgMarkerSymbolLayerV2::QgsSvgMarkerSymbolLayerV2( QString name, double size, double angle )
{
mPath = symbolNameToPath( name );
mSize = size;
mAngle = angle;
mOffset = QPointF( 0, 0 );
mOutlineWidth = 1.0;
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( "offset" ) )
m->setOffset( QgsSymbolLayerV2Utils::decodePoint( props["offset"] ) );
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() );
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 );
}
void QgsSvgMarkerSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
}
void QgsSvgMarkerSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QPainter* p = context.renderContext().painter();
if ( !p )
{
return;
}
p->save();
QPointF outputOffset = QPointF( context.outputLineWidth( mOffset.x() ), context.outputLineWidth( mOffset.y() ) );
if ( mAngle )
outputOffset = _rotatedOffset( outputOffset, mAngle );
p->translate( point + outputOffset );
int size = ( int )( context.outputLineWidth( mSize ) );
if ( size < 1 ) //don't render symbols with size below one pixel
{
return;
}
bool rotated = !doubleNear( mAngle, 0 );
bool drawOnScreen = doubleNear( context.renderContext().rasterScaleFactor(), 1.0, 0.1 );
if ( rotated )
p->rotate( mAngle );
if ( drawOnScreen && !rotated )
{
const QImage& img = QgsSvgCache::instance()->svgAsImage( mPath, size, mFillColor, mOutlineColor, mOutlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor() );
//consider transparency
if ( !doubleNear( context.alpha(), 1.0 ) )
{
QImage transparentImage = img.copy();
QgsSymbolLayerV2Utils::multiplyImageOpacity( &transparentImage, context.alpha() );
p->drawImage( -transparentImage.width() / 2.0, -transparentImage.height() / 2.0, transparentImage );
}
else
{
p->drawImage( -img.width() / 2.0, -img.height() / 2.0, img );
}
}
else
{
p->setOpacity( context.alpha( ) );
const QPicture& pct = QgsSvgCache::instance()->svgAsPicture( mPath, size, mFillColor, mOutlineColor, mOutlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor() );
p->drawPicture( 0, 0, pct );
}
if ( context.selected() )
{
QPen pen( context.selectionColor() );
pen.setWidth( context.outputLineWidth( 1.0 ) );
p->setPen( pen );
p->setBrush( Qt::NoBrush );
double sizePixel = context.outputLineWidth( mSize );
p->drawRect( QRectF( -sizePixel / 2.0, -sizePixel / 2.0, sizePixel, sizePixel ) );
}
p->restore();
}
QgsStringMap QgsSvgMarkerSymbolLayerV2::properties() const
{
QgsStringMap map;
map["name"] = symbolPathToName( mPath );
map["size"] = QString::number( mSize );
map["angle"] = QString::number( mAngle );
map["offset"] = QgsSymbolLayerV2Utils::encodePoint( mOffset );
map["fill"] = mFillColor.name();
map["outline"] = mOutlineColor.name();
map["outline-width"] = QString::number( mOutlineWidth );
return map;
}
QgsSymbolLayerV2* QgsSvgMarkerSymbolLayerV2::clone() const
{
QgsSvgMarkerSymbolLayerV2* m = new QgsSvgMarkerSymbolLayerV2( mPath, mSize, mAngle );
m->setFillColor( mFillColor );
m->setOutlineColor( mOutlineColor );
m->setOutlineWidth( mOutlineWidth );
m->setOffset( mOffset );
return m;
}
void QgsSvgMarkerSymbolLayerV2::writeSldMarker( QDomDocument &doc, QDomElement &element, QgsStringMap props ) const
{
// <Graphic>
QDomElement graphicElem = doc.createElement( "se:Graphic" );
element.appendChild( graphicElem );
QgsSymbolLayerV2Utils::externalGraphicToSld( doc, graphicElem, mPath, "image/svg+xml", mFillColor, 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 );
}
QgsSymbolLayerV2* QgsSvgMarkerSymbolLayerV2::createFromSld( QDomElement &element )
{
QgsDebugMsg( "Entered." );
QDomElement graphicElem = element.firstChildElement( "Graphic" );
if ( graphicElem.isNull() )
return NULL;
QString path, mimeType;
QColor fillColor;
double size;
if ( !QgsSymbolLayerV2Utils::externalGraphicFromSld( graphicElem, path, mimeType, fillColor, size ) )
return NULL;
if ( mimeType != "image/svg+xml" )
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 );
QgsSvgMarkerSymbolLayerV2* m = new QgsSvgMarkerSymbolLayerV2( path, size );
m->setFillColor( fillColor );
//m->setOutlineColor( outlineColor );
//m->setOutlineWidth( outlineWidth );
m->setAngle( angle );
m->setOffset( offset );
return m;
}
QStringList QgsSvgMarkerSymbolLayerV2::listSvgFiles()
{
// copied from QgsMarkerCatalogue - TODO: unify
QStringList list;
QStringList svgPaths = QgsApplication::svgPaths();
for ( int i = 0; i < svgPaths.size(); i++ )
{
QDir dir( svgPaths[i] );
foreach ( QString item, dir.entryList( QDir::Dirs | QDir::NoDotAndDotDot ) )
{
svgPaths.insert( i + 1, dir.path() + "/" + item );
}
foreach ( QString item, dir.entryList( QStringList( "*.svg" ), QDir::Files ) )
{
// TODO test if it is correct SVG
list.append( dir.path() + "/" + item );
}
}
return list;
}
// Stripped down version of listSvgFiles() for specified directory
QStringList QgsSvgMarkerSymbolLayerV2::listSvgFilesAt( QString directory )
{
// TODO anything that applies for the listSvgFiles() applies this also
QStringList list;
QStringList svgPaths;
svgPaths.append( directory );
for ( int i = 0; i < svgPaths.size(); i++ )
{
QDir dir( svgPaths[i] );
foreach ( QString item, dir.entryList( QDir::Dirs | QDir::NoDotAndDotDot ) )
{
svgPaths.insert( i + 1, dir.path() + "/" + item );
}
foreach ( QString item, dir.entryList( QStringList( "*.svg" ), QDir::Files ) )
{
list.append( dir.path() + "/" + item );
}
}
return list;
}
QString QgsSvgMarkerSymbolLayerV2::symbolNameToPath( QString name )
{
// copied from QgsSymbol::setNamedPointSymbol - TODO: unify
// we might have a full path...
if ( QFile( name ).exists() )
return QFileInfo( name ).canonicalFilePath();
// SVG symbol not found - probably a relative path was used
QStringList svgPaths = QgsApplication::svgPaths();
for ( int i = 0; i < svgPaths.size(); i++ )
{
QgsDebugMsg( "SvgPath: " + svgPaths[i] );
QFileInfo myInfo( name );
QString myFileName = myInfo.fileName(); // foo.svg
QString myLowestDir = myInfo.dir().dirName();
QString myLocalPath = svgPaths[i] + "/" + myLowestDir + "/" + myFileName;
QgsDebugMsg( "Alternative svg path: " + myLocalPath );
if ( QFile( myLocalPath ).exists() )
{
QgsDebugMsg( "Svg found in alternative path" );
return QFileInfo( myLocalPath ).canonicalFilePath();
}
else if ( myInfo.isRelative() )
{
QFileInfo pfi( QgsProject::instance()->fileName() );
QString alternatePath = pfi.canonicalPath() + QDir::separator() + name;
if ( pfi.exists() && QFile( alternatePath ).exists() )
{
QgsDebugMsg( "Svg found in alternative path" );
return QFileInfo( alternatePath ).canonicalFilePath();
}
else
{
QgsDebugMsg( "Svg not found in project path" );
}
}
else
{
//couldnt find the file, no happy ending :-(
QgsDebugMsg( "Computed alternate path but no svg there either" );
}
}
return QString();
}
QString QgsSvgMarkerSymbolLayerV2::symbolPathToName( QString path )
{
// copied from QgsSymbol::writeXML
QFileInfo fi( path );
if ( !fi.exists() )
return path;
path = fi.canonicalFilePath();
QStringList svgPaths = QgsApplication::svgPaths();
bool isInSvgPathes = false;
for ( int i = 0; i < svgPaths.size(); i++ )
{
QString dir = QFileInfo( svgPaths[i] ).canonicalFilePath();
if ( !dir.isEmpty() && path.startsWith( dir ) )
{
path = path.mid( dir.size() );
isInSvgPathes = true;
break;
}
}
if ( isInSvgPathes )
return path;
return QgsProject::instance()->writePath( path );
}
//////////
QgsFontMarkerSymbolLayerV2::QgsFontMarkerSymbolLayerV2( QString fontFamily, QChar chr, double pointSize, QColor color, double angle )
{
mFontFamily = fontFamily;
mChr = chr;
mColor = color;
mAngle = angle;
mSize = pointSize;
mOffset = QPointF( 0, 0 );
}
QgsSymbolLayerV2* QgsFontMarkerSymbolLayerV2::create( const QgsStringMap& props )
{
QString fontFamily = DEFAULT_FONTMARKER_FONT;
QChar chr = DEFAULT_FONTMARKER_CHR;
double pointSize = DEFAULT_FONTMARKER_SIZE;
QColor color = DEFAULT_FONTMARKER_COLOR;
double angle = DEFAULT_FONTMARKER_ANGLE;
if ( props.contains( "font" ) )
fontFamily = props["font"];
if ( props.contains( "chr" ) && props["chr"].length() > 0 )
chr = props["chr"].at( 0 );
if ( props.contains( "size" ) )
pointSize = props["size"].toDouble();
if ( props.contains( "color" ) )
color = QgsSymbolLayerV2Utils::decodeColor( props["color"] );
if ( props.contains( "angle" ) )
angle = props["angle"].toDouble();
QgsFontMarkerSymbolLayerV2* m = new QgsFontMarkerSymbolLayerV2( fontFamily, chr, pointSize, color, angle );
if ( props.contains( "offset" ) )
m->setOffset( QgsSymbolLayerV2Utils::decodePoint( props["offset"] ) );
return m;
}
QString QgsFontMarkerSymbolLayerV2::layerType() const
{
return "FontMarker";
}
void QgsFontMarkerSymbolLayerV2::startRender( QgsSymbolV2RenderContext& context )
{
mFont = QFont( mFontFamily );
mFont.setPixelSize( context.outputLineWidth( mSize ) );
QFontMetrics fm( mFont );
mChrOffset = QPointF( fm.width( mChr ) / 2, -fm.ascent() / 2 );
mOrigSize = mSize; // save in case the size would be data defined
}
void QgsFontMarkerSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
Q_UNUSED( context );
}
void QgsFontMarkerSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QPainter* p = context.renderContext().painter();
QColor penColor = context.selected() ? context.selectionColor() : mColor;
penColor.setAlphaF( context.alpha() );
p->setPen( penColor );
p->setFont( mFont );
p->save();
QPointF outputOffset = QPointF( context.outputLineWidth( mOffset.x() ), context.outputLineWidth( mOffset.y() ) );
if ( mAngle )
outputOffset = _rotatedOffset( outputOffset, mAngle );
p->translate( point + outputOffset );
if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale )
{
double s = mSize / mOrigSize;
p->scale( s, s );
}
if ( mAngle != 0 )
p->rotate( mAngle );
p->drawText( -mChrOffset, mChr );
p->restore();
}