void AbstractDiagram::paintMarker( QPainter* painter,
const DataValueAttributes& a,
const QModelIndex& index,
const QPointF& pos )
{
if ( !checkInvariants() || !a.isVisible() ) return;
const MarkerAttributes ma = a.markerAttributes();
if ( !ma.isVisible() ) return;
const PainterSaver painterSaver( painter );
QSizeF maSize = ma.markerSize();
const qreal diagramWidth = d->diagramSize.width();
const qreal diagramHeight = d->diagramSize.height();
switch( ma.markerSizeMode() ) {
case MarkerAttributes::AbsoluteSize:
// Unscaled, i.e. without the painter's "zoom"
maSize.rwidth() /= painter->matrix().m11();
maSize.rheight() /= painter->matrix().m22();
break;
case MarkerAttributes::AbsoluteSizeScaled:
// Keep maSize as is. It is specified directly in pixels and desired
// to be effected by the painter's "zoom".
break;
case MarkerAttributes::RelativeToDiagramWidth:
maSize *= diagramWidth;
break;
case MarkerAttributes::RelativeToDiagramHeight:
maSize *= diagramHeight;
break;
case MarkerAttributes::RelativeToDiagramWidthHeightMin:
maSize *= qMin( diagramWidth, diagramHeight );
break;
}
QBrush indexBrush( brush( index ) );
QPen indexPen( ma.pen() );
if ( ma.markerColor().isValid() )
indexBrush.setColor( ma.markerColor() );
paintMarker( painter, ma, indexBrush, indexPen, pos, maSize );
// workaround: BC cannot be changed, otherwise we would pass the
// index down to next-lower paintMarker function. So far, we
// basically save a circle of radius maSize at pos in the
// reverseMapper. This means that ^^^ this version of paintMarker
// needs to be called to reverse-map the marker.
d->reverseMapper.addCircle( index.row(), index.column(), pos, 2 * maSize );
}
bool DataValueAttributes::operator==( const DataValueAttributes& r ) const
{
/*
qDebug() << "DataValueAttributes::operator== finds"
<< "b" << (isVisible() == r.isVisible())
<< "c" << (textAttributes() == r.textAttributes())
<< "d" << (frameAttributes() == r.frameAttributes())
<< "e" << (backgroundAttributes() == r.backgroundAttributes())
<< "f" << (markerAttributes() == r.markerAttributes())
<< "g" << (decimalDigits() == r.decimalDigits())
<< "h" << (prefix() == r.prefix())
<< "i" << (suffix() == r.suffix())
<< "j" << (dataLabel() == r.dataLabel())
<< "k" << (powerOfTenDivisor() == r.powerOfTenDivisor())
<< "l" << (showInfinite() == r.showInfinite())
<< "m" << (negativePosition() == r.negativePosition())
<< "n" << (positivePosition() == r.positivePosition())
<< "o" << (showRepetitiveDataLabels() == r.showRepetitiveDataLabels())
<< "p" << (showOverlappingDataLabels() == r.showOverlappingDataLabels());
*/
return ( isVisible() == r.isVisible() &&
textAttributes() == r.textAttributes() &&
frameAttributes() == r.frameAttributes() &&
backgroundAttributes() == r.backgroundAttributes() &&
markerAttributes() == r.markerAttributes() &&
decimalDigits() == r.decimalDigits() &&
prefix() == r.prefix() &&
suffix() == r.suffix() &&
dataLabel() == r.dataLabel() &&
powerOfTenDivisor() == r.powerOfTenDivisor() &&
showInfinite() == r.showInfinite() &&
negativePosition() == r.negativePosition() &&
positivePosition() == r.positivePosition() &&
showRepetitiveDataLabels() == r.showRepetitiveDataLabels() &&
showOverlappingDataLabels() == r.showOverlappingDataLabels() &&
usePercentage() == r.usePercentage() );
}
void AbstractDiagram::Private::addLabel(
LabelPaintCache* cache,
const QModelIndex& index,
const CartesianDiagramDataCompressor::CachePosition* position,
const PositionPoints& points,
const Position& autoPositionPositive, const Position& autoPositionNegative,
const qreal value, qreal favoriteAngle /* = 0.0 */ )
{
CartesianDiagramDataCompressor::AggregatedDataValueAttributes allAttrs(
aggregatedAttrs( index, position ) );
QMap<QModelIndex, DataValueAttributes>::const_iterator it;
for ( it = allAttrs.constBegin(); it != allAttrs.constEnd(); ++it ) {
DataValueAttributes dva = it.value();
if ( !dva.isVisible() ) {
continue;
}
const bool isPositive = ( value >= 0.0 );
RelativePosition relPos( dva.position( isPositive ) );
relPos.setReferencePoints( points );
if ( relPos.referencePosition().isUnknown() ) {
relPos.setReferencePosition( isPositive ? autoPositionPositive : autoPositionNegative );
}
// Rotate the label position (not the label itself) if the diagram is rotated so that the defaults still work
if ( isTransposed() ) {
KChartEnums::PositionValue posValue = relPos.referencePosition().value();
if ( posValue >= KChartEnums::PositionNorthWest && posValue <= KChartEnums::PositionWest ) {
// rotate 90 degrees clockwise
posValue = static_cast< KChartEnums::PositionValue >( posValue + 2 );
if ( posValue > KChartEnums::PositionWest ) {
// wraparound
posValue = static_cast< KChartEnums::PositionValue >( posValue -
( KChartEnums::PositionWest - KChartEnums::PositionNorthWest ) );
}
relPos.setReferencePosition( Position( posValue ) );
}
}
const QPointF referencePoint = relPos.referencePoint();
if ( !diagram->coordinatePlane()->isVisiblePoint( referencePoint ) ) {
continue;
}
const qreal fontHeight = cachedFontMetrics( dva.textAttributes().
calculatedFont( plane, KChartEnums::MeasureOrientationMinimum ), diagram )->height();
// Note: When printing data value texts and padding's Measure is using automatic reference area
// detection, the font height is used as reference size for both horizontal and vertical
// padding.
QSizeF relativeMeasureSize( fontHeight, fontHeight );
if ( !dva.textAttributes().hasRotation() ) {
TextAttributes ta = dva.textAttributes();
ta.setRotation( favoriteAngle );
dva.setTextAttributes( ta );
}
// get the size of the label text using a subset of the information going into the final layout
const QString text = formatDataValueText( dva, index, value );
QTextDocument doc;
doc.setDocumentMargin( 0 );
if ( Qt::mightBeRichText( text ) ) {
doc.setHtml( text );
} else {
doc.setPlainText( text );
}
const QFont calculatedFont( dva.textAttributes()
.calculatedFont( plane, KChartEnums::MeasureOrientationMinimum ) );
doc.setDefaultFont( calculatedFont );
const QRectF plainRect = doc.documentLayout()->frameBoundingRect( doc.rootFrame() );
/**
* A few hints on how the positioning of the text frame is done:
*
* Let's assume we have a bar chart, a text for a positive value
* to be drawn, and "North" as attrs.positivePosition().
*
* The reference point (pos) is then set to the top center point
* of a bar. The offset now depends on the alignment:
*
* Top: text is centered horizontally to the bar, bottom of
* text frame starts at top of bar
*
* Bottom: text is centered horizontally to the bar, top of
* text frame starts at top of bar
*
* Center: text is centered horizontally to the bar, center
* line of text frame is same as top of bar
*
* TopLeft: right edge of text frame is horizontal center of
* bar, bottom of text frame is top of bar.
*
* ...
*
* Positive and negative value labels are treated equally, "North"
* also refers to the top of a negative bar, and *not* to the bottom.
*
*
* "NorthEast" likewise refers to the top right edge of the bar,
* "NorthWest" to the top left edge of the bar, and so on.
*
* In other words, attrs.positivePosition() always refers to a
* position of the *bar*, and relPos.alignment() always refers
* to an alignment of the text frame relative to this position.
*/
QTransform transform;
{
// move to the general area where the label should be
QPointF calcPoint = relPos.calculatedPoint( relativeMeasureSize );
transform.translate( calcPoint.x(), calcPoint.y() );
// align the text rect; find out by how many half-widths / half-heights to move.
int dx = -1;
if ( relPos.alignment() & Qt::AlignLeft ) {
dx -= 1;
} else if ( relPos.alignment() & Qt::AlignRight ) {
dx += 1;
}
int dy = -1;
if ( relPos.alignment() & Qt::AlignTop ) {
dy -= 1;
} else if ( relPos.alignment() & Qt::AlignBottom ) {
dy += 1;
}
transform.translate( qreal( dx ) * plainRect.width() * 0.5,
qreal( dy ) * plainRect.height() * 0.5 );
// rotate the text rect around its center
transform.translate( plainRect.center().x(), plainRect.center().y() );
int rotation = dva.textAttributes().rotation();
if ( !isPositive && dva.mirrorNegativeValueTextRotation() ) {
rotation *= -1;
}
transform.rotate( rotation );
transform.translate( -plainRect.center().x(), -plainRect.center().y() );
}
QPainterPath labelArea;
//labelArea.addPolygon( transform.mapToPolygon( plainRect.toRect() ) );
//labelArea.closeSubpath();
// Not doing that because QTransform has a special case for 180° that gives a different than
// usual ordering of the points in the polygon returned by mapToPolygon( const QRect & ).
// We expect a particular ordering in paintDataValueTextsAndMarkers() by using elementAt( 0 ),
// and similar things might happen elsewhere.
labelArea.addPolygon( transform.map( QPolygon( plainRect.toRect(), true ) ) );
// store the label geometry and auxiliary data
cache->paintReplay.append( LabelPaintInfo( it.key(), dva, labelArea,
referencePoint, value >= 0.0, text ) );
}
}