const QPair<QPointF, QPointF> RingDiagram::calculateDataBoundaries () const
{
if ( !checkInvariants( true ) ) return QPair<QPointF, QPointF>( QPointF( 0, 0 ), QPointF( 0, 0 ) );
const PieAttributes attrs( pieAttributes( model()->index( 0, 0, rootIndex() ) ) );
QPointF bottomLeft ( QPointF( 0, 0 ) );
QPointF topRight;
// If we explode, we need extra space for the pie slice that has
// the largest explosion distance.
if ( attrs.explode() ) {
const int rCount = rowCount();
const int colCount = columnCount();
qreal maxExplode = 0.0;
for( int i = 0; i < rCount; ++i ){
qreal maxExplodeInThisRow = 0.0;
for( int j = 0; j < colCount; ++j ){
const PieAttributes columnAttrs( pieAttributes( model()->index( i, j, rootIndex() ) ) );
//qDebug() << columnAttrs.explodeFactor();
maxExplodeInThisRow = qMax( maxExplodeInThisRow, columnAttrs.explodeFactor() );
}
maxExplode += maxExplodeInThisRow;
// FIXME: What if explode factor of inner ring is > 1.0 ?
if ( !d->expandWhenExploded )
break;
}
// explode factor is relative to width (outer r - inner r) of one ring
maxExplode /= ( rCount + 1);
topRight = QPointF( 1.0+maxExplode, 1.0+maxExplode );
}else{
topRight = QPointF( 1.0, 1.0 );
}
return QPair<QPointF, QPointF> ( bottomLeft, topRight );
}
const QPair<QPointF, QPointF> PieDiagram::calculateDataBoundaries () const
{
if ( !checkInvariants( true ) ) return QPair<QPointF, QPointF>( QPointF( 0, 0 ), QPointF( 0, 0 ) );
const PieAttributes attrs( pieAttributes( model()->index( 0, 0, rootIndex() ) ) );
QPointF bottomLeft ( QPointF( 0, 0 ) );
QPointF topRight;
// If we explode, we need extra space for the pie slice that has
// the largest explosion distance.
if ( attrs.explode() ) {
const int colCount = columnCount();
qreal maxExplode = 0.0;
for( int j = 0; j < colCount; ++j ){
const PieAttributes columnAttrs( pieAttributes( model()->index( 0, j, rootIndex() ) ) );
maxExplode = qMax( maxExplode, columnAttrs.explodeFactor() );
}
topRight = QPointF( 1.0+maxExplode, 1.0+maxExplode );
}else{
topRight = QPointF( 1.0, 1.0 );
}
return QPair<QPointF, QPointF> ( bottomLeft, topRight );
}