/*!
Paint the contents of a QwtPlot instance into a given rectangle.
\param plot Plot to be rendered
\param painter Painter
\param plotRect Bounding rectangle
\sa renderDocument(), renderTo(), QwtPainter::setRoundingAlignment()
*/
void QwtPlotRenderer::render( QwtPlot *plot,
QPainter *painter, const QRectF &plotRect ) const
{
int axisId;
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || plot->size().isNull() )
return;
if ( !( d_data->discardFlags & DiscardBackground ) )
qwtRenderBackground( painter, plotRect, plot );
/*
The layout engine uses the same methods as they are used
by the Qt layout system. Therefore we need to calculate the
layout in screen coordinates and paint with a scaled painter.
*/
QTransform transform;
transform.scale(
double( painter->device()->logicalDpiX() ) / plot->logicalDpiX(),
double( painter->device()->logicalDpiY() ) / plot->logicalDpiY() );
painter->save();
int baseLineDists[QwtPlot::axisCnt];
if ( d_data->layoutFlags & FrameWithScales )
{
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
baseLineDists[axisId] = scaleWidget->margin();
scaleWidget->setMargin( 0 );
}
}
}
// Calculate the layout for the print.
QwtPlotLayout::Options layoutOptions =
QwtPlotLayout::IgnoreScrollbars | QwtPlotLayout::IgnoreFrames;
if ( d_data->discardFlags & DiscardLegend )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
const QRectF layoutRect = transform.inverted().mapRect( plotRect );
plot->plotLayout()->activate( plot, layoutRect, layoutOptions );
painter->setWorldTransform( transform, true );
// canvas
QwtScaleMap maps[QwtPlot::axisCnt];
buildCanvasMaps( plot, plot->plotLayout()->canvasRect(), maps );
renderCanvas( plot, painter, plot->plotLayout()->canvasRect(), maps );
if ( !( d_data->discardFlags & DiscardTitle )
&& ( !plot->titleLabel()->text().isEmpty() ) )
{
renderTitle( plot, painter, plot->plotLayout()->titleRect() );
}
if ( !( d_data->discardFlags & DiscardLegend )
&& plot->legend() && !plot->legend()->isEmpty() )
{
renderLegend( plot, painter, plot->plotLayout()->legendRect() );
}
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
int baseDist = scaleWidget->margin();
int startDist, endDist;
scaleWidget->getBorderDistHint( startDist, endDist );
renderScale( plot, painter, axisId, startDist, endDist,
baseDist, plot->plotLayout()->scaleRect( axisId ) );
}
}
plot->plotLayout()->invalidate();
// reset all widgets with their original attributes.
if ( d_data->layoutFlags & FrameWithScales )
{
// restore the previous base line dists
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
scaleWidget->setMargin( baseLineDists[axisId] );
}
}
painter->restore();
}
/*!
Paint the contents of a QwtPlot instance into a given rectangle.
\param plot Plot to be rendered
\param painter Painter
\param plotRect Bounding rectangle
\sa renderDocument(), renderTo(), QwtPainter::setRoundingAlignment()
*/
void QwtPlotRenderer::render( QwtPlot *plot,
QPainter *painter, const QRectF &plotRect ) const
{
int axisId;
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || plot->size().isNull() )
return;
if ( !( d_data->discardFlags & DiscardBackground ) )
qwtRenderBackground( painter, plotRect, plot );
/*
The layout engine uses the same methods as they are used
by the Qt layout system. Therefore we need to calculate the
layout in screen coordinates and paint with a scaled painter.
*/
QTransform transform;
transform.scale(
double( painter->device()->logicalDpiX() ) / plot->logicalDpiX(),
double( painter->device()->logicalDpiY() ) / plot->logicalDpiY() );
QRectF layoutRect = transform.inverted().mapRect( plotRect );
if ( !( d_data->discardFlags & DiscardBackground ) )
{
// subtract the contents margins
int left, top, right, bottom;
plot->getContentsMargins( &left, &top, &right, &bottom );
layoutRect.adjust( left, top, -right, -bottom );
}
int baseLineDists[QwtPlot::axisCnt];
if ( d_data->layoutFlags & FrameWithScales )
{
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
baseLineDists[axisId] = scaleWidget->margin();
scaleWidget->setMargin( 0 );
}
if ( !plot->axisEnabled( axisId ) )
{
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
// When we have a scale the frame is painted on
// the position of the backbone - otherwise we
// need to introduce a margin around the canvas
switch( axisId )
{
case QwtPlot::yLeft:
layoutRect.adjust( 1, 0, 0, 0 );
break;
case QwtPlot::yRight:
layoutRect.adjust( 0, 0, -1, 0 );
break;
case QwtPlot::xTop:
layoutRect.adjust( 0, 1, 0, 0 );
break;
case QwtPlot::xBottom:
layoutRect.adjust( 0, 0, 0, -1 );
break;
default:
break;
}
layoutRect.adjust( left, top, right, bottom );
}
}
}
// Calculate the layout for the document.
QwtPlotLayout::Options layoutOptions =
QwtPlotLayout::IgnoreScrollbars | QwtPlotLayout::IgnoreFrames;
if ( d_data->discardFlags & DiscardLegend )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
plot->plotLayout()->activate( plot, layoutRect, layoutOptions );
// now start painting
painter->save();
painter->setWorldTransform( transform, true );
// canvas
QwtScaleMap maps[QwtPlot::axisCnt];
buildCanvasMaps( plot, plot->plotLayout()->canvasRect(), maps );
renderCanvas( plot, painter, plot->plotLayout()->canvasRect(), maps );
if ( !( d_data->discardFlags & DiscardTitle )
&& ( !plot->titleLabel()->text().isEmpty() ) )
{
renderTitle( plot, painter, plot->plotLayout()->titleRect() );
}
if ( !( d_data->discardFlags & DiscardLegend )
&& plot->legend() && !plot->legend()->isEmpty() )
{
renderLegend( plot, painter, plot->plotLayout()->legendRect() );
}
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
int baseDist = scaleWidget->margin();
int startDist, endDist;
scaleWidget->getBorderDistHint( startDist, endDist );
renderScale( plot, painter, axisId, startDist, endDist,
baseDist, plot->plotLayout()->scaleRect( axisId ) );
}
}
plot->plotLayout()->invalidate();
// reset all widgets with their original attributes.
if ( d_data->layoutFlags & FrameWithScales )
{
// restore the previous base line dists
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
scaleWidget->setMargin( baseLineDists[axisId] );
}
}
painter->restore();
}
/*!
Paint the contents of a QwtPlot instance into a given rectangle.
\param plot Plot to be rendered
\param painter Painter
\param plotRect Bounding rectangle
\sa renderDocument(), renderTo(), QwtPainter::setRoundingAlignment()
*/
void QwtPlotRenderer::render( QwtPlot *plot,
QPainter *painter, const QRectF &plotRect ) const
{
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || plot->size().isNull() )
{
return;
}
if ( !( d_data->discardFlags & DiscardBackground ) )
QwtPainter::drawBackgound( painter, plotRect, plot );
/*
The layout engine uses the same methods as they are used
by the Qt layout system. Therefore we need to calculate the
layout in screen coordinates and paint with a scaled painter.
*/
QTransform transform;
transform.scale(
double( painter->device()->logicalDpiX() ) / plot->logicalDpiX(),
double( painter->device()->logicalDpiY() ) / plot->logicalDpiY() );
QRectF layoutRect = transform.inverted().mapRect( plotRect );
if ( !( d_data->discardFlags & DiscardBackground ) )
{
// subtract the contents margins
int left, top, right, bottom;
plot->getContentsMargins( &left, &top, &right, &bottom );
layoutRect.adjust( left, top, -right, -bottom );
}
QwtPlotLayout *layout = plot->plotLayout();
int baseLineDists[QwtAxis::PosCount];
int canvasMargins[QwtAxis::PosCount];
for ( int axisPos = 0; axisPos < QwtAxis::PosCount; axisPos++ )
{
canvasMargins[ axisPos ] = layout->canvasMargin( axisPos );
if ( d_data->layoutFlags & FrameWithScales )
{
const QwtAxisId axisId( axisPos, QWT_DUMMY_ID );
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
baseLineDists[ axisPos ] = scaleWidget->margin();
scaleWidget->setMargin( 0 );
}
if ( !plot->isAxisVisible( axisId ) )
{
int left = 0;
int right = 0;
int top = 0;
int bottom = 0;
// When we have a scale the frame is painted on
// the position of the backbone - otherwise we
// need to introduce a margin around the canvas
switch( axisPos )
{
case QwtAxis::yLeft:
layoutRect.adjust( 1, 0, 0, 0 );
break;
case QwtAxis::yRight:
layoutRect.adjust( 0, 0, -1, 0 );
break;
case QwtAxis::xTop:
layoutRect.adjust( 0, 1, 0, 0 );
break;
case QwtAxis::xBottom:
layoutRect.adjust( 0, 0, 0, -1 );
break;
}
layoutRect.adjust( left, top, right, bottom );
}
}
}
// Calculate the layout for the document.
QwtPlotLayout::Options layoutOptions = QwtPlotLayout::IgnoreScrollbars;
if ( ( d_data->layoutFlags & FrameWithScales ) ||
( d_data->discardFlags & DiscardCanvasFrame ) )
{
layoutOptions |= QwtPlotLayout::IgnoreFrames;
}
if ( d_data->discardFlags & DiscardLegend )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
if ( d_data->discardFlags & DiscardTitle )
layoutOptions |= QwtPlotLayout::IgnoreTitle;
if ( d_data->discardFlags & DiscardFooter )
layoutOptions |= QwtPlotLayout::IgnoreFooter;
layout->update( plot, layoutRect, layoutOptions );
// canvas
QwtScaleMapTable mapTable = buildCanvasMaps( plot, layout->canvasRect() );
if ( updateCanvasMargins( plot, layout->canvasRect(), mapTable ) )
{
// recalculate maps and layout, when the margins
// have been changed
layout->update( plot, layoutRect, layoutOptions );
mapTable = buildCanvasMaps( plot, layout->canvasRect() );
}
// now start painting
painter->save();
painter->setWorldTransform( transform, true );
renderCanvas( plot, painter, layout->canvasRect(), mapTable );
if ( !( d_data->discardFlags & DiscardTitle )
&& ( !plot->titleLabel()->text().isEmpty() ) )
{
renderTitle( plot, painter, layout->titleRect() );
}
if ( !( d_data->discardFlags & DiscardFooter )
&& ( !plot->footerLabel()->text().isEmpty() ) )
{
renderFooter( plot, painter, layout->footerRect() );
}
if ( !( d_data->discardFlags & DiscardLegend )
&& plot->legend() && !plot->legend()->isEmpty() )
{
renderLegend( plot, painter, layout->legendRect() );
}
for ( int axisPos = 0; axisPos < QwtAxis::PosCount; axisPos++ )
{
for ( int i = 0; i < plot->axesCount( i ); i++ )
{
const QwtAxisId axisId( axisPos, i );
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
{
int baseDist = scaleWidget->margin();
int startDist, endDist;
scaleWidget->getBorderDistHint( startDist, endDist );
renderScale( plot, painter, axisId, startDist, endDist,
baseDist, layout->scaleRect( axisId ) );
}
}
}
painter->restore();
// restore all setting to their original attributes.
for ( int axisPos = 0; axisPos < QwtAxis::PosCount; axisPos++ )
{
if ( d_data->layoutFlags & FrameWithScales )
{
const QwtAxisId axisId( axisPos, QWT_DUMMY_ID );
QwtScaleWidget *scaleWidget = plot->axisWidget( axisId );
if ( scaleWidget )
scaleWidget->setMargin( baseLineDists[axisPos] );
}
layout->setCanvasMargin( canvasMargins[axisPos] );
}
layout->invalidate();
}
