void QgsEllipseSymbolLayerV2::renderPoint( QPointF point, QgsSymbolV2RenderContext& context )
{
bool ok;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH ) )
{
context.setOriginalValueVariable( mOutlineWidth );
double width = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH, context, mOutlineWidth ).toDouble();
width = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), width, mOutlineWidthUnit, mOutlineWidthMapUnitScale );
mPen.setWidthF( width );
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_STYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenStyle( mOutlineStyle ) );
QString styleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_STYLE, context, QVariant(), &ok ).toString();
if ( ok )
{
Qt::PenStyle style = QgsSymbolLayerV2Utils::decodePenStyle( styleString );
mPen.setStyle( style );
}
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOIN_STYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenJoinStyle( mPenJoinStyle ) );
QString style = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOIN_STYLE, context, QVariant(), &ok ).toString();
if ( ok )
{
mPen.setJoinStyle( QgsSymbolLayerV2Utils::decodePenJoinStyle( style ) );
}
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( mColor ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
mBrush.setColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) );
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( mOutlineColor ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
mPen.setColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) );
}
double scaledWidth = mSymbolWidth;
double scaledHeight = mSymbolHeight;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) || hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT ) || hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME ) )
{
QString symbolName = mSymbolName;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME ) )
{
context.setOriginalValueVariable( mSymbolName );
symbolName = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME, context, mSymbolName ).toString();
}
preparePath( symbolName, context, &scaledWidth, &scaledHeight, context.feature() );
}
//offset and rotation
bool hasDataDefinedRotation = false;
QPointF offset;
double angle = 0;
calculateOffsetAndRotation( context, scaledWidth, scaledHeight, hasDataDefinedRotation, offset, angle );
QPainter* p = context.renderContext().painter();
if ( !p )
{
return;
}
QMatrix transform;
transform.translate( point.x() + offset.x(), point.y() + offset.y() );
if ( !qgsDoubleNear( angle, 0.0 ) )
{
transform.rotate( angle );
}
p->setPen( mPen );
p->setBrush( mBrush );
p->drawPath( transform.map( mPainterPath ) );
}
void QgsEllipseSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
bool ok;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH ) )
{
double width = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH, context.feature(), mOutlineWidth ).toDouble();
width *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit, mOutlineWidthMapUnitScale );
mPen.setWidthF( width );
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_STYLE ) )
{
QString styleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_STYLE, context.feature(), QVariant(), &ok ).toString();
if ( ok )
{
Qt::PenStyle style = QgsSymbolLayerV2Utils::decodePenStyle( styleString );
mPen.setStyle( style );
}
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR ) )
{
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR, context.feature(), QVariant(), &ok ).toString();
if ( ok )
mBrush.setColor( QColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) ) );
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR ) )
{
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR, context.feature(), QVariant(), &ok ).toString();
if ( ok )
mPen.setColor( QColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) ) );
}
double scaledWidth = mSymbolWidth;
double scaledHeight = mSymbolHeight;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) || hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT ) || hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME ) )
{
QString symbolName = mSymbolName;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME ) )
{
symbolName = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME, context.feature(), mSymbolName ).toString();
}
preparePath( symbolName, context, &scaledWidth, &scaledHeight, context.feature() );
}
//offset
double offsetX = 0;
double offsetY = 0;
markerOffset( context, scaledWidth, scaledHeight, mSymbolWidthUnit, mSymbolHeightUnit, offsetX, offsetY, mSymbolWidthMapUnitScale, mSymbolHeightMapUnitScale );
QPointF off( offsetX, offsetY );
QPainter* p = context.renderContext().painter();
if ( !p )
{
return;
}
//priority for rotation: 1. data defined symbol level, 2. symbol layer rotation (mAngle)
double rotation = 0.0;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_ROTATION ) )
{
rotation = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_ROTATION, context.feature(), mAngle ).toDouble() + mLineAngle;
}
else if ( !qgsDoubleNear( mAngle + mLineAngle, 0.0 ) )
{
rotation = mAngle + mLineAngle;
}
if ( rotation )
off = _rotatedOffset( off, rotation );
QMatrix transform;
transform.translate( point.x() + off.x(), point.y() + off.y() );
if ( !qgsDoubleNear( rotation, 0.0 ) )
{
transform.rotate( rotation );
}
p->setPen( mPen );
p->setBrush( mBrush );
p->drawPath( transform.map( mPainterPath ) );
}
void QgsEllipseSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QgsExpression* outlineWidthExpression = expression( "outline_width" );
QgsExpression* fillColorExpression = expression( "fill_color" );
QgsExpression* outlineColorExpression = expression( "outline_color" );
QgsExpression* widthExpression = expression( "width" );
QgsExpression* heightExpression = expression( "height" );
QgsExpression* symbolNameExpression = expression( "symbol_name" );
QgsExpression* rotationExpression = expression( "rotation" );
if ( outlineWidthExpression )
{
double width = outlineWidthExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
width *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOutlineWidthUnit );
mPen.setWidthF( width );
}
if ( fillColorExpression )
{
QString colorString = fillColorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
mBrush.setColor( QColor( colorString ) );
}
if ( outlineColorExpression )
{
QString colorString = outlineColorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
mPen.setColor( QColor( colorString ) );
}
if ( widthExpression || heightExpression || symbolNameExpression )
{
QString symbolName = mSymbolName;
if ( symbolNameExpression )
{
symbolName = symbolNameExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
}
preparePath( symbolName, context, context.feature() );
}
QPainter* p = context.renderContext().painter();
if ( !p )
{
return;
}
//priority for rotation: 1. data defined symbol level, 2. symbol layer rotation (mAngle)
double rotation = 0.0;
if ( rotationExpression )
{
rotation = rotationExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
else if ( !qgsDoubleNear( mAngle, 0.0 ) )
{
rotation = mAngle;
}
QMatrix transform;
transform.translate( point.x(), point.y() );
if ( !qgsDoubleNear( rotation, 0.0 ) )
{
transform.rotate( rotation );
}
p->setPen( mPen );
p->setBrush( mBrush );
p->drawPath( transform.map( mPainterPath ) );
}
void QgsMarkerLineSymbolLayerV2::stopRender( QgsSymbolV2RenderContext& context )
{
mMarker->stopRender( context.renderContext() );
}
void QgsMarkerLineSymbolLayerV2::renderPolylineVertex( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
if ( points.isEmpty() )
return;
QgsRenderContext& rc = context.renderContext();
double origAngle = mMarker->angle();
double angle;
int i, maxCount;
bool isRing = false;
if ( mPlacement == FirstVertex )
{
i = 0;
maxCount = 1;
}
else if ( mPlacement == LastVertex )
{
i = points.count() - 1;
maxCount = points.count();
}
else
{
i = 0;
maxCount = points.count();
if ( points.first() == points.last() )
isRing = true;
}
for ( ; i < maxCount; ++i )
{
const QPointF& pt = points[i];
// rotate marker (if desired)
if ( mRotateMarker )
{
if ( i == 0 )
{
if ( !isRing )
{
// use first segment's angle
const QPointF& nextPt = points[i+1];
if ( pt == nextPt )
continue;
angle = MyLine( pt, nextPt ).angle();
}
else
{
// closed ring: use average angle between first and last segment
const QPointF& prevPt = points[points.count() - 2];
const QPointF& nextPt = points[1];
if ( prevPt == pt || nextPt == pt )
continue;
angle = _averageAngle( prevPt, pt, nextPt );
}
}
else if ( i == points.count() - 1 )
{
if ( !isRing )
{
// use last segment's angle
const QPointF& prevPt = points[i-1];
if ( pt == prevPt )
continue;
angle = MyLine( prevPt, pt ).angle();
}
else
{
// don't draw the last marker - it has been drawn already
continue;
}
}
else
{
// use average angle
const QPointF& prevPt = points[i-1];
const QPointF& nextPt = points[i+1];
if ( prevPt == pt || nextPt == pt )
continue;
angle = _averageAngle( prevPt, pt, nextPt );
}
mMarker->setAngle( origAngle + angle * 180 / M_PI );
}
mMarker->renderPoint( points.at( i ), rc, -1, context.selected() );
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsMarkerLineSymbolLayerV2::renderPolylineInterval( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
if ( points.isEmpty() )
return;
QPointF lastPt = points[0];
double lengthLeft = 0; // how much is left until next marker
bool first = mOffsetAlongLine ? false : true; //only draw marker at first vertex when no offset along line is set
QgsRenderContext& rc = context.renderContext();
double interval = mInterval;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_INTERVAL ) )
{
context.setOriginalValueVariable( mInterval );
interval = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_INTERVAL, context, mInterval ).toDouble();
}
if ( interval <= 0 )
{
interval = 0.1;
}
double offsetAlongLine = mOffsetAlongLine;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE ) )
{
context.setOriginalValueVariable( mOffsetAlongLine );
offsetAlongLine = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE, context, mOffsetAlongLine ).toDouble();
}
double painterUnitInterval = QgsSymbolLayerV2Utils::convertToPainterUnits( rc, interval, mIntervalUnit, mIntervalMapUnitScale );
lengthLeft = painterUnitInterval - QgsSymbolLayerV2Utils::convertToPainterUnits( rc, offsetAlongLine, mIntervalUnit, mIntervalMapUnitScale );
for ( int i = 1; i < points.count(); ++i )
{
const QPointF& pt = points[i];
if ( lastPt == pt ) // must not be equal!
continue;
// for each line, find out dx and dy, and length
MyLine l( lastPt, pt );
QPointF diff = l.diffForInterval( painterUnitInterval );
// if there's some length left from previous line
// use only the rest for the first point in new line segment
double c = 1 - lengthLeft / painterUnitInterval;
lengthLeft += l.length();
// rotate marker (if desired)
if ( mRotateMarker )
{
mMarker->setLineAngle( l.angle() * 180 / M_PI );
}
// draw first marker
if ( first )
{
mMarker->renderPoint( lastPt, context.feature(), rc, -1, context.selected() );
first = false;
}
// while we're not at the end of line segment, draw!
while ( lengthLeft > painterUnitInterval )
{
// "c" is 1 for regular point or in interval (0,1] for begin of line segment
lastPt += c * diff;
lengthLeft -= painterUnitInterval;
mMarker->renderPoint( lastPt, context.feature(), rc, -1, context.selected() );
c = 1; // reset c (if wasn't 1 already)
}
lastPt = pt;
}
}
void QgsArrowSymbolLayer::stopRender( QgsSymbolV2RenderContext& context )
{
mSymbol->stopRender( context.renderContext() );
}
void QgsSimpleLineSymbolLayerV2::applyDataDefinedSymbology( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen, double& offset )
{
//data defined properties
double scaledWidth = 0;
QgsExpression* strokeWidthExpression = expression( "width" );
if ( strokeWidthExpression )
{
scaledWidth = strokeWidthExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble()
* QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mWidthUnit );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale )
{
scaledWidth = mWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mWidthUnit );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
}
//color
QgsExpression* strokeColorExpression = expression( "color" );
if ( strokeColorExpression )
{
pen.setColor( QgsSymbolLayerV2Utils::decodeColor( strokeColorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
}
//offset
offset = mOffset;
QgsExpression* lineOffsetExpression = expression( "offset" );
if ( lineOffsetExpression )
{
offset = lineOffsetExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
//dash dot vector
QgsExpression* dashPatternExpression = expression( "customdash" );
if ( dashPatternExpression )
{
QVector<qreal> dashVector;
QStringList dashList = dashPatternExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString().split( ";" );
QStringList::const_iterator dashIt = dashList.constBegin();
for ( ; dashIt != dashList.constEnd(); ++dashIt )
{
dashVector.push_back( dashIt->toDouble() * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mCustomDashPatternUnit ) / mPen.widthF() );
}
pen.setDashPattern( dashVector );
}
//join style
QgsExpression* joinStyleExpression = expression( "joinstyle" );
if ( joinStyleExpression )
{
QString joinStyleString = joinStyleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
pen.setJoinStyle( QgsSymbolLayerV2Utils::decodePenJoinStyle( joinStyleString ) );
}
//cap style
QgsExpression* capStyleExpression = expression( "capstyle" );
if ( capStyleExpression )
{
QString capStyleString = capStyleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
pen.setCapStyle( QgsSymbolLayerV2Utils::decodePenCapStyle( capStyleString ) );
}
}
void QgsSimpleLineSymbolLayerV2::applySizeScale( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen )
{
double scaledWidth = mWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mWidthUnit, mWidthMapUnitScale );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
}
void QgsSvgMarkerSymbolLayerV2::startRender( QgsSymbolV2RenderContext& context )
{
mOrigSize = mSize; // save in case the size would be data defined
Q_UNUSED( context );
prepareExpressions( context.layer(), context.renderContext().rendererScale() );
}
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();
//offset
double offsetX = 0;
double offsetY = 0;
markerOffset( context, offsetX, offsetY );
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;
QgsExpression* outlineExpression = expression( "outline" );
if ( outlineExpression )
{
outlineColor = QgsSymbolLayerV2Utils::decodeColor( outlineExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() );
}
bool fitsInCache = true;
bool usePict = true;
double hwRatio = 1.0;
if ( drawOnScreen && !rotated )
{
usePict = false;
const QImage& img = QgsSvgCache::instance()->svgAsImage( path, size, fillColor, outlineColor, outlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor(), fitsInCache );
if ( fitsInCache && img.width() > 1 )
{
//consider transparency
if ( !qgsDoubleNear( context.alpha(), 1.0 ) )
{
QImage transparentImage = img.copy();
QgsSymbolLayerV2Utils::multiplyImageOpacity( &transparentImage, context.alpha() );
p->drawImage( -transparentImage.width() / 2.0, -transparentImage.height() / 2.0, transparentImage );
hwRatio = ( double )transparentImage.height() / ( double )transparentImage.width();
}
else
{
p->drawImage( -img.width() / 2.0, -img.height() / 2.0, img );
hwRatio = ( double )img.height() / ( double )img.width();
}
}
}
if ( usePict || !fitsInCache )
{
p->setOpacity( context.alpha() );
const QPicture& pct = QgsSvgCache::instance()->svgAsPicture( path, size, fillColor, outlineColor, outlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor(), context.renderContext().forceVectorOutput() );
if ( pct.width() > 1 )
{
p->drawPicture( 0, 0, pct );
hwRatio = ( double )pct.height() / ( double )pct.width();
}
}
if ( context.selected() )
{
QPen pen( context.renderContext().selectionColor() );
double penWidth = QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), QgsSymbolV2::MM );
if ( penWidth > size / 20 )
{
// keep the pen width from covering symbol
penWidth = size / 20;
}
double penOffset = penWidth / 2;
pen.setWidth( penWidth );
p->setPen( pen );
p->setBrush( Qt::NoBrush );
double wSize = size + penOffset;
double hSize = size * hwRatio + penOffset;
p->drawRect( QRectF( -wSize / 2.0, -hSize / 2.0, wSize, hSize ) );
}
p->restore();
}
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;
if ( mAngleExpression )
{
angle = mAngleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
if ( angle )
off = _rotatedOffset( off, angle );
//data defined shape?
if ( mNameExpression )
{
QString name = mNameExpression->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 || mAngleExpression;
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 ) );
}
}
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(), context.renderContext().rendererScale() );
mAngleExpression = expression( "angle" );
mNameExpression = expression( "name" );
QgsMarkerSymbolLayerV2::startRender( context );
}
bool QgsEllipseSymbolLayerV2::writeDxf( QgsDxfExport& e, double mmMapUnitScaleFactor, const QString& layerName, QgsSymbolV2RenderContext &context, QPointF shift ) const
{
//width
double symbolWidth = mSymbolWidth;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) ) //1. priority: data defined setting on symbol layer le
{
context.setOriginalValueVariable( mSymbolWidth );
symbolWidth = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH, context, mSymbolWidth ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
symbolWidth = mSize;
}
if ( mSymbolWidthUnit == QgsSymbolV2::MM )
{
symbolWidth *= mmMapUnitScaleFactor;
}
//height
double symbolHeight = mSymbolHeight;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT ) ) //1. priority: data defined setting on symbol layer level
{
context.setOriginalValueVariable( mSymbolHeight );
symbolHeight = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT, context, mSymbolHeight ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
symbolHeight = mSize;
}
if ( mSymbolHeightUnit == QgsSymbolV2::MM )
{
symbolHeight *= mmMapUnitScaleFactor;
}
//outline width
double outlineWidth = mOutlineWidth;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH ) )
{
context.setOriginalValueVariable( mOutlineWidth );
outlineWidth = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_WIDTH, context, mOutlineWidth ).toDouble();
}
if ( mOutlineWidthUnit == QgsSymbolV2::MM )
{
outlineWidth *= outlineWidth;
}
//fill color
bool ok;
QColor fc = mColor;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( mColor ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_FILL_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
fc = QgsSymbolLayerV2Utils::decodeColor( colorString );
}
//outline color
QColor oc = mOutlineColor;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( mOutlineColor ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OUTLINE_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
oc = QgsSymbolLayerV2Utils::decodeColor( colorString );
}
//symbol name
QString symbolName = mSymbolName;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME ) )
{
context.setOriginalValueVariable( mSymbolName );
symbolName = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_SYMBOL_NAME, context, mSymbolName ).toString();
}
//offset
double offsetX = 0;
double offsetY = 0;
markerOffset( context, offsetX, offsetY );
QPointF off( offsetX, offsetY );
//priority for rotation: 1. data defined symbol level, 2. symbol layer rotation (mAngle)
double rotation = 0.0;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_ROTATION ) )
{
context.setOriginalValueVariable( mAngle );
rotation = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_ROTATION, context, mAngle ).toDouble() + mLineAngle;
}
else if ( !qgsDoubleNear( mAngle + mLineAngle, 0.0 ) )
{
rotation = mAngle + mLineAngle;
}
rotation = -rotation; //rotation in Qt is counterclockwise
if ( rotation )
off = _rotatedOffset( off, rotation );
QTransform t;
t.translate( shift.x() + offsetX, shift.y() + offsetY );
if ( !qgsDoubleNear( rotation, 0.0 ) )
t.rotate( rotation );
double halfWidth = symbolWidth / 2.0;
double halfHeight = symbolHeight / 2.0;
if ( symbolName == "circle" )
{
if ( qgsDoubleNear( halfWidth, halfHeight ) )
{
QgsPointV2 pt( t.map( QPointF( 0, 0 ) ) );
e.writeFilledCircle( layerName, oc, pt, halfWidth );
}
else
{
QgsPointSequenceV2 line;
double stepsize = 2 * M_PI / 40;
for ( int i = 0; i < 39; ++i )
{
double angle = stepsize * i;
double x = halfWidth * cos( angle );
double y = halfHeight * sin( angle );
line << QgsPointV2( t.map( QPointF( x, y ) ) );
}
//close ellipse with first point
line << line.at( 0 );
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequenceV2() << line, layerName, "SOLID", fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( line, layerName, "CONTINUOUS", oc, outlineWidth );
}
}
else if ( symbolName == "rectangle" )
{
QgsPointSequenceV2 p;
p << QgsPointV2( t.map( QPointF( -halfWidth, -halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( halfWidth, -halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( halfWidth, halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( -halfWidth, halfHeight ) ) );
p << p[0];
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequenceV2() << p, layerName, "SOLID", fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( p, layerName, "CONTINUOUS", oc, outlineWidth );
return true;
}
else if ( symbolName == "cross" && mPen.style() != Qt::NoPen )
{
e.writePolyline( QgsPointSequenceV2()
<< QgsPointV2( t.map( QPointF( -halfWidth, 0 ) ) )
<< QgsPointV2( t.map( QPointF( halfWidth, 0 ) ) ),
layerName, "CONTINUOUS", oc, outlineWidth );
e.writePolyline( QgsPointSequenceV2()
<< QgsPointV2( t.map( QPointF( 0, halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( 0, -halfHeight ) ) ),
layerName, "CONTINUOUS", oc, outlineWidth );
return true;
}
else if ( symbolName == "triangle" )
{
QgsPointSequenceV2 p;
p << QgsPointV2( t.map( QPointF( -halfWidth, -halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( halfWidth, -halfHeight ) ) )
<< QgsPointV2( t.map( QPointF( 0, halfHeight ) ) );
p << p[0];
if ( mBrush.style() != Qt::NoBrush )
e.writePolygon( QgsRingSequenceV2() << p, layerName, "SOLID", fc );
if ( mPen.style() != Qt::NoPen )
e.writePolyline( p, layerName, "CONTINUOUS", oc, outlineWidth );
return true;
}
return false; //soon...
}
void QgsSimpleLineSymbolLayerV2::applyDataDefinedSymbology( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen, double& offset )
{
if ( !hasDataDefinedProperties() )
return; // shortcut
//data defined properties
bool hasStrokeWidthExpression = false;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) )
{
context.setOriginalValueVariable( mWidth );
double scaledWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(),
evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH, context, mWidth ).toDouble(),
mWidthUnit, mWidthMapUnitScale );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
hasStrokeWidthExpression = true;
}
//color
bool ok;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( pen.color() ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
pen.setColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) );
}
//offset
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( mOffset );
offset = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET, context, offset ).toDouble();
}
//dash dot vector
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_CUSTOMDASH ) )
{
double scaledWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), mWidth, mWidthUnit, mWidthMapUnitScale );
double dashWidthDiv = mPen.widthF();
if ( hasStrokeWidthExpression )
{
dashWidthDiv = pen.widthF();
scaledWidth = pen.widthF();
}
//fix dash pattern width in Qt 4.8
QStringList versionSplit = QString( qVersion() ).split( '.' );
if ( versionSplit.size() > 1
&& versionSplit.at( 1 ).toInt() >= 8
&& ( scaledWidth * context.renderContext().rasterScaleFactor() ) < 1.0 )
{
dashWidthDiv = 1.0;
}
QVector<qreal> dashVector;
QStringList dashList = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_CUSTOMDASH, context, QVariant(), &ok ).toString().split( ';' );
if ( ok )
{
QStringList::const_iterator dashIt = dashList.constBegin();
for ( ; dashIt != dashList.constEnd(); ++dashIt )
{
dashVector.push_back( QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), dashIt->toDouble(), mCustomDashPatternUnit, mCustomDashPatternMapUnitScale ) / dashWidthDiv );
}
pen.setDashPattern( dashVector );
}
}
//line style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_LINE_STYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenStyle( pen.style() ) );
QString lineStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_LINE_STYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setStyle( QgsSymbolLayerV2Utils::decodePenStyle( lineStyleString ) );
}
//join style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOINSTYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenJoinStyle( pen.joinStyle() ) );
QString joinStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOINSTYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setJoinStyle( QgsSymbolLayerV2Utils::decodePenJoinStyle( joinStyleString ) );
}
//cap style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_CAPSTYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenCapStyle( pen.capStyle() ) );
QString capStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_CAPSTYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setCapStyle( QgsSymbolLayerV2Utils::decodePenCapStyle( capStyleString ) );
}
}
void QgsSimpleLineSymbolLayerV2::applyDataDefinedSymbology( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen, double& offset )
{
if ( mDataDefinedProperties.isEmpty() )
return; // shortcut
//data defined properties
QgsExpression* strokeWidthExpression = expression( "width" );
if ( strokeWidthExpression )
{
double scaledWidth = strokeWidthExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble()
* QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mWidthUnit, mWidthMapUnitScale );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
}
//color
QgsExpression* strokeColorExpression = expression( "color" );
if ( strokeColorExpression )
{
pen.setColor( QgsSymbolLayerV2Utils::decodeColor( strokeColorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
}
//offset
QgsExpression* lineOffsetExpression = expression( "offset" );
if ( lineOffsetExpression )
{
offset = lineOffsetExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
//dash dot vector
QgsExpression* dashPatternExpression = expression( "customdash" );
if ( dashPatternExpression )
{
double scaledWidth = mWidth * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mWidthUnit, mWidthMapUnitScale );
double dashWidthDiv = mPen.widthF();
if ( strokeWidthExpression )
{
dashWidthDiv = pen.widthF();
scaledWidth = pen.widthF();
}
//fix dash pattern width in Qt 4.8
QStringList versionSplit = QString( qVersion() ).split( "." );
if ( versionSplit.size() > 1
&& versionSplit.at( 1 ).toInt() >= 8
&& ( scaledWidth * context.renderContext().rasterScaleFactor() ) < 1.0 )
{
dashWidthDiv = 1.0;
}
QVector<qreal> dashVector;
QStringList dashList = dashPatternExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString().split( ";" );
QStringList::const_iterator dashIt = dashList.constBegin();
for ( ; dashIt != dashList.constEnd(); ++dashIt )
{
dashVector.push_back( dashIt->toDouble() * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mCustomDashPatternUnit, mCustomDashPatternMapUnitScale ) / dashWidthDiv );
}
pen.setDashPattern( dashVector );
}
//join style
QgsExpression* joinStyleExpression = expression( "joinstyle" );
if ( joinStyleExpression )
{
QString joinStyleString = joinStyleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
pen.setJoinStyle( QgsSymbolLayerV2Utils::decodePenJoinStyle( joinStyleString ) );
}
//cap style
QgsExpression* capStyleExpression = expression( "capstyle" );
if ( capStyleExpression )
{
QString capStyleString = capStyleExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
pen.setCapStyle( QgsSymbolLayerV2Utils::decodePenCapStyle( capStyleString ) );
}
}
void QgsMarkerLineSymbolLayerV2::renderPolyline( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
double offset = mOffset;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( mOffset );
offset = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET, context, mOffset ).toDouble();
}
Placement placement = mPlacement;
bool ok;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_PLACEMENT ) )
{
QString placementString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_PLACEMENT, context, QVariant(), &ok ).toString();
if ( ok )
{
if ( placementString.compare( "vertex", Qt::CaseInsensitive ) == 0 )
{
placement = Vertex;
}
else if ( placementString.compare( "lastvertex", Qt::CaseInsensitive ) == 0 )
{
placement = LastVertex;
}
else if ( placementString.compare( "firstvertex", Qt::CaseInsensitive ) == 0 )
{
placement = FirstVertex;
}
else if ( placementString.compare( "centerpoint", Qt::CaseInsensitive ) == 0 )
{
placement = CentralPoint;
}
else if ( placementString.compare( "curvepoint", Qt::CaseInsensitive ) == 0 )
{
placement = CurvePoint;
}
else
{
placement = Interval;
}
}
}
if ( offset == 0 )
{
if ( placement == Interval )
renderPolylineInterval( points, context );
else if ( placement == CentralPoint )
renderPolylineCentral( points, context );
else
renderPolylineVertex( points, context, placement );
}
else
{
context.renderContext().setGeometry( 0 ); //always use segmented geometry with offset
QList<QPolygonF> mline = ::offsetLine( points, QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), offset, mOffsetUnit, mOffsetMapUnitScale ), context.feature() ? context.feature()->constGeometry()->type() : QGis::Line );
for ( int part = 0; part < mline.count(); ++part )
{
const QPolygonF &points2 = mline[ part ];
if ( placement == Interval )
renderPolylineInterval( points2, context );
else if ( placement == CentralPoint )
renderPolylineCentral( points2, context );
else
renderPolylineVertex( points2, context, placement );
}
}
}
QColor QgsSimpleLineSymbolLayerV2::dxfColor( const QgsSymbolV2RenderContext& context ) const
{
QgsExpression* strokeColorExpression = expression( "color" );
if ( strokeColorExpression )
{
return ( QgsSymbolLayerV2Utils::decodeColor( strokeColorExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString() ) );
}
return mColor;
}
void QgsMarkerLineSymbolLayerV2::renderPolylineVertex( const QPolygonF& points, QgsSymbolV2RenderContext& context, Placement placement )
{
if ( points.isEmpty() )
return;
QgsRenderContext& rc = context.renderContext();
double origAngle = mMarker->angle();
int i, maxCount;
bool isRing = false;
double offsetAlongLine = mOffsetAlongLine;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE ) )
{
context.setOriginalValueVariable( mOffsetAlongLine );
offsetAlongLine = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE, context, mOffsetAlongLine ).toDouble();
}
if ( offsetAlongLine != 0 )
{
//scale offset along line
offsetAlongLine = QgsSymbolLayerV2Utils::convertToPainterUnits( rc, offsetAlongLine, mOffsetAlongLineUnit, mOffsetAlongLineMapUnitScale );
}
if ( offsetAlongLine == 0 && context.renderContext().geometry()
&& context.renderContext().geometry()->hasCurvedSegments() && ( placement == Vertex || placement == CurvePoint ) )
{
const QgsCoordinateTransform* ct = context.renderContext().coordinateTransform();
const QgsMapToPixel& mtp = context.renderContext().mapToPixel();
QgsVertexId vId;
QgsPointV2 vPoint;
double x, y, z;
QPointF mapPoint;
while ( context.renderContext().geometry()->nextVertex( vId, vPoint ) )
{
if (( placement == Vertex && vId.type == QgsVertexId::SegmentVertex )
|| ( placement == CurvePoint && vId.type == QgsVertexId::CurveVertex ) )
{
//transform
x = vPoint.x(), y = vPoint.y(); z = vPoint.z();
if ( ct )
{
ct->transformInPlace( x, y, z );
}
mapPoint.setX( x ); mapPoint.setY( y );
mtp.transformInPlace( mapPoint.rx(), mapPoint.ry() );
if ( mRotateMarker )
{
double angle = context.renderContext().geometry()->vertexAngle( vId );
mMarker->setAngle( angle * 180 / M_PI );
}
mMarker->renderPoint( mapPoint, context.feature(), rc, -1, context.selected() );
}
}
return;
}
if ( placement == FirstVertex )
{
i = 0;
maxCount = 1;
}
else if ( placement == LastVertex )
{
i = points.count() - 1;
maxCount = points.count();
}
else if ( placement == Vertex )
{
i = 0;
maxCount = points.count();
if ( points.first() == points.last() )
isRing = true;
}
else
{
return;
}
if ( offsetAlongLine > 0 && ( placement == FirstVertex || placement == LastVertex ) )
{
double distance;
distance = placement == FirstVertex ? offsetAlongLine : -offsetAlongLine;
renderOffsetVertexAlongLine( points, i, distance, context );
// restore original rotation
mMarker->setAngle( origAngle );
return;
}
for ( ; i < maxCount; ++i )
{
if ( isRing && placement == Vertex && i == points.count() - 1 )
{
continue; // don't draw the last marker - it has been drawn already
}
// rotate marker (if desired)
if ( mRotateMarker )
{
double angle = markerAngle( points, isRing, i );
mMarker->setAngle( origAngle + angle * 180 / M_PI );
}
mMarker->renderPoint( points.at( i ), context.feature(), rc, -1, context.selected() );
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsMarkerLineSymbolLayerV2::renderPolyline( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
double offset = mOffset;
QgsExpression* offsetExpression = expression( "offset" );
if ( offsetExpression )
{
offset = offsetExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
Placement placement = mPlacement;
QgsExpression* placementExpression = expression( "placement" );
if ( placementExpression )
{
QString placementString = placementExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toString();
if ( placementString.compare( "vertex", Qt::CaseInsensitive ) == 0 )
{
placement = Vertex;
}
else if ( placementString.compare( "lastvertex", Qt::CaseInsensitive ) == 0 )
{
placement = LastVertex;
}
else if ( placementString.compare( "firstvertex", Qt::CaseInsensitive ) == 0 )
{
placement = FirstVertex;
}
else if ( placementString.compare( "centerpoint", Qt::CaseInsensitive ) == 0 )
{
placement = CentralPoint;
}
else
{
placement = Interval;
}
}
if ( offset == 0 )
{
if ( placement == Interval )
renderPolylineInterval( points, context );
else if ( placement == CentralPoint )
renderPolylineCentral( points, context );
else
renderPolylineVertex( points, context, placement );
}
else
{
QList<QPolygonF> mline = ::offsetLine( points, offset * QgsSymbolLayerV2Utils::lineWidthScaleFactor( context.renderContext(), mOffsetUnit, mOffsetMapUnitScale ), context.feature() ? context.feature()->geometry()->type() : QGis::Line );
for ( int part = 0; part < mline.count(); ++part )
{
const QPolygonF &points2 = mline[ part ];
if ( placement == Interval )
renderPolylineInterval( points2, context );
else if ( placement == CentralPoint )
renderPolylineCentral( points2, context );
else
renderPolylineVertex( points2, context, placement );
}
}
}
void QgsArrowSymbolLayer::renderPolyline( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
Q_UNUSED( points );
if ( !context.renderContext().painter() )
{
return;
}
context.renderContext().expressionContext().appendScope( mExpressionScope.data() );
mExpressionScope->setVariable( QgsExpressionContext::EXPR_GEOMETRY_POINT_COUNT, points.size() + 1 );
mExpressionScope->setVariable( QgsExpressionContext::EXPR_GEOMETRY_POINT_NUM, 1 );
if ( isCurved() )
{
for ( int pIdx = 0; pIdx < points.size() - 1; pIdx += 2 )
{
mExpressionScope->setVariable( QgsExpressionContext::EXPR_GEOMETRY_POINT_NUM, pIdx + 1 );
_resolveDataDefined( context );
if ( points.size() - pIdx >= 3 )
{
// origin point
QPointF po( points.at( pIdx ) );
// middle point
QPointF pm( points.at( pIdx + 1 ) );
// destination point
QPointF pd( points.at( pIdx + 2 ) );
QPolygonF poly = curvedArrow( po, pm, pd, mScaledArrowStartWidth, mScaledArrowWidth, mScaledHeadSize, mComputedHeadType, mScaledOffset );
mSymbol->renderPolygon( poly, /* rings */ nullptr, context.feature(), context.renderContext() );
}
// straight arrow
else if ( points.size() - pIdx == 2 )
{
// origin point
QPointF po( points.at( pIdx ) );
// destination point
QPointF pd( points.at( pIdx + 1 ) );
QPolygonF poly = straightArrow( po, pd, mScaledArrowStartWidth, mScaledArrowWidth, mScaledHeadSize, mComputedHeadType, mScaledOffset );
mSymbol->renderPolygon( poly, /* rings */ nullptr, context.feature(), context.renderContext() );
}
}
}
else
{
// only straight arrows
for ( int pIdx = 0; pIdx < points.size() - 1; pIdx++ )
{
mExpressionScope->setVariable( QgsExpressionContext::EXPR_GEOMETRY_POINT_NUM, pIdx + 1 );
_resolveDataDefined( context );
// origin point
QPointF po( points.at( pIdx ) );
// destination point
QPointF pd( points.at( pIdx + 1 ) );
QPolygonF poly = straightArrow( po, pd, mScaledArrowStartWidth, mScaledArrowWidth, mScaledHeadSize, mComputedHeadType, mScaledOffset );
mSymbol->renderPolygon( poly, /* rings */ nullptr, context.feature(), context.renderContext() );
}
}
context.renderContext().expressionContext().popScope();
}
void QgsMarkerLineSymbolLayerV2::renderPolylineInterval( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
if ( points.isEmpty() )
return;
QPointF lastPt = points[0];
double lengthLeft = 0; // how much is left until next marker
bool first = mOffsetAlongLine ? false : true; //only draw marker at first vertex when no offset along line is set
double origAngle = mMarker->angle();
QgsRenderContext& rc = context.renderContext();
double interval = mInterval;
QgsExpression* intervalExpression = expression( "interval" );
if ( intervalExpression )
{
interval = intervalExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
if ( interval <= 0 )
{
interval = 0.1;
}
double offsetAlongLine = mOffsetAlongLine;
QgsExpression* offsetAlongLineExpression = expression( "offset_along_line" );
if ( offsetAlongLineExpression )
{
offsetAlongLine = offsetAlongLineExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
double painterUnitInterval = interval * QgsSymbolLayerV2Utils::lineWidthScaleFactor( rc, mIntervalUnit, mIntervalMapUnitScale );
lengthLeft = painterUnitInterval - offsetAlongLine * QgsSymbolLayerV2Utils::lineWidthScaleFactor( rc, mIntervalUnit, mIntervalMapUnitScale );
for ( int i = 1; i < points.count(); ++i )
{
const QPointF& pt = points[i];
if ( lastPt == pt ) // must not be equal!
continue;
// for each line, find out dx and dy, and length
MyLine l( lastPt, pt );
QPointF diff = l.diffForInterval( painterUnitInterval );
// if there's some length left from previous line
// use only the rest for the first point in new line segment
double c = 1 - lengthLeft / painterUnitInterval;
lengthLeft += l.length();
// rotate marker (if desired)
if ( mRotateMarker )
{
mMarker->setAngle( origAngle + ( l.angle() * 180 / M_PI ) );
}
// draw first marker
if ( first )
{
mMarker->renderPoint( lastPt, context.feature(), rc, -1, context.selected() );
first = false;
}
// while we're not at the end of line segment, draw!
while ( lengthLeft > painterUnitInterval )
{
// "c" is 1 for regular point or in interval (0,1] for begin of line segment
lastPt += c * diff;
lengthLeft -= painterUnitInterval;
mMarker->renderPoint( lastPt, context.feature(), rc, -1, context.selected() );
c = 1; // reset c (if wasn't 1 already)
}
lastPt = pt;
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsMarkerLineSymbolLayerV2::renderPolylineInterval( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
if ( points.isEmpty() )
return;
QPointF lastPt = points[0];
double lengthLeft = 0; // how much is left until next marker
bool first = true;
double origAngle = mMarker->angle();
double painterUnitInterval = context.outputLineWidth( mInterval > 0 ? mInterval : 0.1 );
QgsRenderContext& rc = context.renderContext();
for ( int i = 1; i < points.count(); ++i )
{
const QPointF& pt = points[i];
if ( lastPt == pt ) // must not be equal!
continue;
// for each line, find out dx and dy, and length
MyLine l( lastPt, pt );
QPointF diff = l.diffForInterval( painterUnitInterval );
// if there's some length left from previous line
// use only the rest for the first point in new line segment
double c = 1 - lengthLeft / painterUnitInterval;
lengthLeft += l.length();
// rotate marker (if desired)
if ( mRotateMarker )
{
mMarker->setAngle( origAngle + ( l.angle() * 180 / M_PI ) );
}
// draw first marker
if ( first )
{
mMarker->renderPoint( lastPt, rc, -1, context.selected() );
first = false;
}
// while we're not at the end of line segment, draw!
while ( lengthLeft > painterUnitInterval )
{
// "c" is 1 for regular point or in interval (0,1] for begin of line segment
lastPt += c * diff;
lengthLeft -= painterUnitInterval;
mMarker->renderPoint( lastPt, rc, -1, context.selected() );
c = 1; // reset c (if wasn't 1 already)
}
lastPt = pt;
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsMarkerLineSymbolLayerV2::renderPolylineVertex( const QPolygonF& points, QgsSymbolV2RenderContext& context, Placement placement )
{
if ( points.isEmpty() )
return;
QgsRenderContext& rc = context.renderContext();
double origAngle = mMarker->angle();
int i, maxCount;
bool isRing = false;
double offsetAlongLine = mOffsetAlongLine;
QgsExpression* offsetAlongLineExpression = expression( "offset_along_line" );
if ( offsetAlongLineExpression )
{
offsetAlongLine = offsetAlongLineExpression->evaluate( const_cast<QgsFeature*>( context.feature() ) ).toDouble();
}
if ( offsetAlongLine != 0 )
{
//scale offset along line
offsetAlongLine *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( rc, mOffsetAlongLineUnit, mOffsetAlongLineMapUnitScale );
}
if ( placement == FirstVertex )
{
i = 0;
maxCount = 1;
}
else if ( placement == LastVertex )
{
i = points.count() - 1;
maxCount = points.count();
}
else
{
i = 0;
maxCount = points.count();
if ( points.first() == points.last() )
isRing = true;
}
if ( offsetAlongLine > 0 && ( placement == FirstVertex || placement == LastVertex ) )
{
double distance;
distance = placement == FirstVertex ? offsetAlongLine : -offsetAlongLine;
renderOffsetVertexAlongLine( points, i, distance, context );
// restore original rotation
mMarker->setAngle( origAngle );
return;
}
for ( ; i < maxCount; ++i )
{
if ( isRing && placement == Vertex && i == points.count() - 1 )
{
continue; // don't draw the last marker - it has been drawn already
}
// rotate marker (if desired)
if ( mRotateMarker )
{
double angle = markerAngle( points, isRing, i );
mMarker->setAngle( origAngle + angle * 180 / M_PI );
}
mMarker->renderPoint( points.at( i ), context.feature(), rc, -1, context.selected() );
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsDxfExport::addFeature( const QgsSymbolV2RenderContext& ctx, const QString& layer, const QgsSymbolLayerV2* symbolLayer, const QgsSymbolV2* symbol )
{
const QgsFeature* fet = ctx.feature();
if ( !fet )
{
return;
}
QgsGeometry* geom = fet->geometry();
if ( geom )
{
int c = 0;
if ( mSymbologyExport != NoSymbology )
{
c = colorFromSymbolLayer( symbolLayer, ctx );
}
double width = -1;
if ( mSymbologyExport != NoSymbology && symbolLayer )
{
width = symbolLayer->dxfWidth( *this, ctx );
}
QString lineStyleName = "CONTINUOUS";
if ( mSymbologyExport != NoSymbology )
{
lineStyleName = lineStyleFromSymbolLayer( symbolLayer );
}
QGis::WkbType geometryType = geom->wkbType();
//single point
if ( geometryType == QGis::WKBPoint || geometryType == QGis::WKBPoint25D )
{
writePoint( geom->asPoint(), layer, c, fet, symbolLayer, symbol );
}
//multipoint
if ( geometryType == QGis::WKBMultiPoint || geometryType == QGis::WKBMultiPoint25D )
{
QgsMultiPoint multiPoint = geom->asMultiPoint();
QgsMultiPoint::const_iterator it = multiPoint.constBegin();
for ( ; it != multiPoint.constEnd(); ++it )
{
writePoint( *it, layer, c, fet, symbolLayer, symbol );
}
}
//single line
if ( geometryType == QGis::WKBLineString || geometryType == QGis::WKBLineString25D )
{
writePolyline( geom->asPolyline(), layer, lineStyleName, c, width, false );
}
//multiline
if ( geometryType == QGis::WKBMultiLineString || geometryType == QGis::WKBMultiLineString25D )
{
QgsMultiPolyline multiLine = geom->asMultiPolyline();
QgsMultiPolyline::const_iterator lIt = multiLine.constBegin();
for ( ; lIt != multiLine.constEnd(); ++lIt )
{
writePolyline( *lIt, layer, lineStyleName, c, width, false );
}
}
//polygon
if ( geometryType == QGis::WKBPolygon || geometryType == QGis::WKBPolygon25D )
{
QgsPolygon polygon = geom->asPolygon();
QgsPolygon::const_iterator polyIt = polygon.constBegin();
for ( ; polyIt != polygon.constEnd(); ++polyIt ) //iterate over rings
{
writePolyline( *polyIt, layer, lineStyleName, c, width, true );
}
}
//multipolygon or polygon
if ( geometryType == QGis::WKBMultiPolygon || geometryType == QGis::WKBMultiPolygon25D )
{
QgsMultiPolygon mp = geom->asMultiPolygon();
QgsMultiPolygon::const_iterator mpIt = mp.constBegin();
for ( ; mpIt != mp.constEnd(); ++mpIt )
{
QgsPolygon::const_iterator polyIt = mpIt->constBegin();
for ( ; polyIt != mpIt->constEnd(); ++polyIt )
{
writePolyline( *polyIt, layer, lineStyleName, c, width, true );
}
}
}
}
}
void QgsArrowSymbolLayer::_resolveDataDefined( QgsSymbolV2RenderContext& context )
{
if ( !hasDataDefinedProperties() )
return; // shortcut if case there is no data defined properties at all
bool ok;
if ( hasDataDefinedProperty( "arrow_width" ) )
{
context.setOriginalValueVariable( arrowWidth() );
double w = evaluateDataDefinedProperty( "arrow_width", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledArrowWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, arrowWidthUnit(), arrowWidthUnitScale() );
}
}
if ( hasDataDefinedProperty( "arrow_start_width" ) )
{
context.setOriginalValueVariable( arrowStartWidth() );
double w = evaluateDataDefinedProperty( "arrow_start_width", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledArrowStartWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, arrowStartWidthUnit(), arrowStartWidthUnitScale() );
}
}
if ( hasDataDefinedProperty( "head_width" ) )
{
context.setOriginalValueVariable( headWidth() );
double w = evaluateDataDefinedProperty( "head_width", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledHeadWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, headWidthUnit(), headWidthUnitScale() );
}
}
if ( hasDataDefinedProperty( "head_height" ) )
{
context.setOriginalValueVariable( headHeight() );
double w = evaluateDataDefinedProperty( "head_height", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledHeadHeight = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, headHeightUnit(), headHeightUnitScale() );
}
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( offset() );
double w = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET, context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledOffset = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, offsetUnit(), offsetMapUnitScale() );
}
}
if ( hasDataDefinedProperty( "head_type" ) )
{
context.setOriginalValueVariable( headType() );
int h = evaluateDataDefinedProperty( "head_type", context, QVariant(), &ok ).toInt();
if ( ok )
{
mComputedHeadType = static_cast<HeadType>( h );
}
}
if ( hasDataDefinedProperty( "arrow_type" ) )
{
context.setOriginalValueVariable( arrowType() );
int h = evaluateDataDefinedProperty( "arrow_type", context, QVariant(), &ok ).toInt();
if ( ok )
{
mComputedArrowType = static_cast<ArrowType>( h );
}
}
}
void QgsEllipseSymbolLayerV2::preparePath( const QString& symbolName, QgsSymbolV2RenderContext& context, double* scaledWidth, double* scaledHeight, const QgsFeature* f )
{
mPainterPath = QPainterPath();
const QgsRenderContext& ct = context.renderContext();
double width = 0;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) ) //1. priority: data defined setting on symbol layer le
{
width = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH, f, mSymbolWidth ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
width = mSize;
}
else //3. priority: global width setting
{
width = mSymbolWidth;
}
if ( scaledWidth )
{
*scaledWidth = width;
}
width *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( ct, mSymbolWidthUnit, mSymbolHeightMapUnitScale );
double height = 0;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT ) ) //1. priority: data defined setting on symbol layer level
{
height = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_HEIGHT, f, mSymbolHeight ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
height = mSize;
}
else //3. priority: global height setting
{
height = mSymbolHeight;
}
if ( scaledHeight )
{
*scaledHeight = height;
}
height *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( ct, mSymbolHeightUnit, mSymbolHeightMapUnitScale );
if ( symbolName == "circle" )
{
mPainterPath.addEllipse( QRectF( -width / 2.0, -height / 2.0, width, height ) );
}
else if ( symbolName == "rectangle" )
{
mPainterPath.addRect( QRectF( -width / 2.0, -height / 2.0, width, height ) );
}
else if ( symbolName == "cross" )
{
mPainterPath.moveTo( 0, -height / 2.0 );
mPainterPath.lineTo( 0, height / 2.0 );
mPainterPath.moveTo( -width / 2.0, 0 );
mPainterPath.lineTo( width / 2.0, 0 );
}
else if ( symbolName == "triangle" )
{
mPainterPath.moveTo( 0, -height / 2.0 );
mPainterPath.lineTo( -width / 2.0, height / 2.0 );
mPainterPath.lineTo( width / 2.0, height / 2.0 );
mPainterPath.lineTo( 0, -height / 2.0 );
}
}
void QgsSimpleLineSymbolLayerV2::applySizeScale( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen )
{
double scaledWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), mWidth, mWidthUnit, mWidthMapUnitScale );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
}
void QgsEllipseSymbolLayerV2::preparePath( const QString& symbolName, QgsSymbolV2RenderContext& context, const QgsFeature* f )
{
mPainterPath = QPainterPath();
const QgsRenderContext& ct = context.renderContext();
double width = 0;
QgsExpression* widthExpression = expression( "width" );
if ( widthExpression ) //1. priority: data defined setting on symbol layer level
{
width = widthExpression->evaluate( const_cast<QgsFeature*>( f ) ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
width = mSize;
}
else //3. priority: global width setting
{
width = mSymbolWidth;
}
width *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( ct, mSymbolWidthUnit );
double height = 0;
QgsExpression* heightExpression = expression( "height" );
if ( heightExpression ) //1. priority: data defined setting on symbol layer level
{
height = heightExpression->evaluate( const_cast<QgsFeature*>( f ) ).toDouble();
}
else if ( context.renderHints() & QgsSymbolV2::DataDefinedSizeScale ) //2. priority: is data defined size on symbol level
{
height = mSize;
}
else //3. priority: global height setting
{
height = mSymbolHeight;
}
height *= QgsSymbolLayerV2Utils::lineWidthScaleFactor( ct, mSymbolHeightUnit );
if ( symbolName == "circle" )
{
mPainterPath.addEllipse( QRectF( -width / 2.0, -height / 2.0, width, height ) );
}
else if ( symbolName == "rectangle" )
{
mPainterPath.addRect( QRectF( -width / 2.0, -height / 2.0, width, height ) );
}
else if ( symbolName == "cross" )
{
mPainterPath.moveTo( 0, -height / 2.0 );
mPainterPath.lineTo( 0, height / 2.0 );
mPainterPath.moveTo( -width / 2.0, 0 );
mPainterPath.lineTo( width / 2.0, 0 );
}
else if ( symbolName == "triangle" )
{
mPainterPath.moveTo( 0, -height / 2.0 );
mPainterPath.lineTo( -width / 2.0, height / 2.0 );
mPainterPath.lineTo( width / 2.0, height / 2.0 );
mPainterPath.lineTo( 0, -height / 2.0 );
}
}
void QgsSvgMarkerSymbolLayerV2::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
QPainter* p = context.renderContext().painter();
if ( !p )
{
return;
}
double size = context.outputLineWidth( mSize );
//don't render symbols with size below one or above 10,000 pixels
if (( int )size < 1 || 10000.0 < size )
{
return;
}
p->save();
QPointF outputOffset = QPointF( context.outputLineWidth( mOffset.x() ), context.outputLineWidth( mOffset.y() ) );
if ( mAngle )
outputOffset = _rotatedOffset( outputOffset, mAngle );
p->translate( point + outputOffset );
bool rotated = !doubleNear( mAngle, 0 );
bool drawOnScreen = doubleNear( context.renderContext().rasterScaleFactor(), 1.0, 0.1 );
if ( rotated )
p->rotate( mAngle );
bool fitsInCache = true;
bool usePict = true;
double hwRatio = 1.0;
if ( drawOnScreen && !rotated )
{
usePict = false;
const QImage& img = QgsSvgCache::instance()->svgAsImage( mPath, size, mFillColor, mOutlineColor, mOutlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor(), fitsInCache );
if ( fitsInCache && img.width() > 1 )
{
//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 );
hwRatio = ( double )transparentImage.height() / ( double )transparentImage.width();
}
else
{
p->drawImage( -img.width() / 2.0, -img.height() / 2.0, img );
hwRatio = ( double )img.height() / ( double )img.width();
}
}
}
if ( usePict || !fitsInCache )
{
p->setOpacity( context.alpha() );
const QPicture& pct = QgsSvgCache::instance()->svgAsPicture( mPath, size, mFillColor, mOutlineColor, mOutlineWidth,
context.renderContext().scaleFactor(), context.renderContext().rasterScaleFactor() );
if ( pct.width() > 1 )
{
p->drawPicture( 0, 0, pct );
hwRatio = ( double )pct.height() / ( double )pct.width();
}
}
if ( context.selected() )
{
QPen pen( context.selectionColor() );
double penWidth = context.outputLineWidth( 1.0 );
if ( penWidth > size / 20 )
{
// keep the pen width from covering symbol
penWidth = size / 20;
}
double penOffset = penWidth / 2;
pen.setWidth( penWidth );
p->setPen( pen );
p->setBrush( Qt::NoBrush );
double wSize = size + penOffset;
double hSize = size * hwRatio + penOffset;
p->drawRect( QRectF( -wSize / 2.0, -hSize / 2.0, wSize, hSize ) );
}
p->restore();
}