void paintAreas( AbstractDiagram::Private* diagramPrivate, PaintContext* ctx, const QModelIndex& index,
const QList< QPolygonF >& areas, uint opacity )
{
AbstractDiagram* diagram = diagramPrivate->diagram;
QPainterPath path;
for ( int i = 0; i < areas.count(); ++i )
{
const QPolygonF& p = areas[ i ];
path.addPolygon( p );
diagramPrivate->reverseMapper.addPolygon( index.row(), index.column(), p );
path.closeSubpath();
}
ThreeDLineAttributes threeDAttrs = threeDLineAttributes( diagram, index );
QBrush trans = diagram->brush( index );
if ( threeDAttrs.isEnabled() ) {
trans = threeDAttrs.threeDBrush( trans, path.boundingRect() );
}
QColor transColor = trans.color();
transColor.setAlpha( opacity );
trans.setColor(transColor);
QPen indexPen = diagram->pen(index);
indexPen.setBrush( trans );
const PainterSaver painterSaver( ctx->painter() );
ctx->painter()->setRenderHint( QPainter::Antialiasing, diagram->antiAliasing() );
ctx->painter()->setPen( PrintingParameters::scalePen( indexPen ) );
ctx->painter()->setBrush( trans );
ctx->painter()->drawPath( path );
}
void paintElements( AbstractDiagram::Private *diagramPrivate, PaintContext* ctx,
const LabelPaintCache& lpc, const LineAttributesInfoList& lineList )
{
AbstractDiagram* diagram = diagramPrivate->diagram;
// paint all lines and their attributes
const PainterSaver painterSaver( ctx->painter() );
ctx->painter()->setRenderHint( QPainter::Antialiasing, diagram->antiAliasing() );
QBrush curBrush;
QPen curPen;
QPolygonF points;
KDAB_FOREACH ( const LineAttributesInfo& lineInfo, lineList ) {
const QModelIndex& index = lineInfo.index;
const ThreeDLineAttributes td = threeDLineAttributes( diagram, index );
if ( td.isEnabled() ) {
PaintingHelpers::paintThreeDLines( ctx, diagram, index, lineInfo.value,
lineInfo.nextValue, td, &diagramPrivate->reverseMapper );
} else {
const QBrush brush( diagram->brush( index ) );
const QPen pen( diagram->pen( index ) );
// line goes from lineInfo.value to lineInfo.nextValue
diagramPrivate->reverseMapper.addLine( lineInfo.index.row(), lineInfo.index.column(),
lineInfo.value, lineInfo.nextValue );
if ( points.count() && points.last() == lineInfo.value && curBrush == brush && curPen == pen ) {
// continue the current run of lines
} else {
// different painter settings or discontinuous line: start a new run of lines
if ( points.count() ) {
PaintingHelpers::paintPolyline( ctx, curBrush, curPen, points );
}
curBrush = brush;
curPen = pen;
points.clear();
points << lineInfo.value;
}
points << lineInfo.nextValue;
}
}
if ( points.count() ) {
// the last run of lines is yet to be painted - do it now
PaintingHelpers::paintPolyline( ctx, curBrush, curPen, points );
}
KDAB_FOREACH ( const LineAttributesInfo& lineInfo, lineList ) {
const ValueTrackerAttributes vt = valueTrackerAttributes( diagram, lineInfo.index );
if ( vt.isEnabled() ) {
PaintingHelpers::paintValueTracker( ctx, vt, lineInfo.nextValue );
}
}
// paint all data value texts and the point markers
diagramPrivate->paintDataValueTextsAndMarkers( ctx, lpc, true );
}