void Plotter::paintEvent ( QPaintEvent*)
{
QPainter painter ( viewport() );
PaintContext ctx;
ctx.setPainter ( &painter );
ctx.setRectangle ( QRectF ( 0, 0, width(), height() ) );
paint ( &ctx );
}
void LineDiagram::paintEvent ( QPaintEvent*)
{
//qDebug() << "starting LineDiagram::paintEvent ( QPaintEvent*)";
QPainter painter ( viewport() );
PaintContext ctx;
ctx.setPainter ( &painter );
ctx.setRectangle ( QRectF ( 0, 0, width(), height() ) );
paint ( &ctx );
//qDebug() << " LineDiagram::paintEvent ( QPaintEvent*) ended.";
}
void CartesianCoordinatePlane::paint ( QPainter* painter )
{
// prevent recursive call:
//qDebug("attempt plane::paint()");
if( d->bPaintIsRunning ){
return;
}
d->bPaintIsRunning = true;
//qDebug() << "start plane::paint()";
AbstractDiagramList diags = diagrams();
if ( !diags.isEmpty() )
{
PaintContext ctx;
ctx.setPainter ( painter );
ctx.setCoordinatePlane ( this );
const QRectF drawArea( drawingArea() );
ctx.setRectangle ( drawArea );
// enabling clipping so that we're not drawing outside
PainterSaver painterSaver( painter );
QRect clipRect = drawArea.toRect().adjusted( -1, -1, 1, 1 );
QRegion clipRegion( clipRect );
painter->setClipRegion( clipRegion );
// paint the coordinate system rulers:
d->grid->drawGrid( &ctx );
// paint the diagrams:
for ( int i = 0; i < diags.size(); i++ )
{
if ( diags[i]->isHidden() ) {
continue;
}
//qDebug(" start diags[i]->paint ( &ctx );");
PainterSaver diagramPainterSaver( painter );
diags[i]->paint ( &ctx );
//qDebug(" done: diags[i]->paint ( &ctx );");
}
//for debugging:
// painter->drawRect( drawArea.adjusted(4,4,-4,-4) );
// painter->drawRect( drawArea.adjusted(2,2,-2,-2) );
// painter->drawRect( drawArea );
}
d->bPaintIsRunning = false;
//qDebug("done: plane::paint()");
}
