/*!
\brief Paint the plot into a given rectangle.
Paint the contents of a QwtPlot instance into a given rectangle.
\param painter Painter
\param plotRect Bounding rectangle
\param pfilter Print filter
\sa QwtPlotPrintFilter
*/
void QwtPlot::print(QPainter *painter, const QRect &plotRect,
const QwtPlotPrintFilter &pfilter) const
{
int axisId;
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || size().isNull() )
return;
painter->save();
// All paint operations need to be scaled according to
// the paint device metrics.
QwtPainter::setMetricsMap(this, painter->device());
const QwtMetricsMap &metricsMap = QwtPainter::metricsMap();
// It is almost impossible to integrate into the Qt layout
// framework, when using different fonts for printing
// and screen. To avoid writing different and Qt unconform
// layout engines we change the widget attributes, print and
// reset the widget attributes again. This way we produce a lot of
// useless layout events ...
pfilter.apply((QwtPlot *)this);
int baseLineDists[QwtPlot::axisCnt];
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintCanvasBackground) )
{
// In case of no background we set the backbone of
// the scale on the frame of the canvas.
for (axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if ( scaleWidget )
{
baseLineDists[axisId] = scaleWidget->baseLineDist();
scaleWidget->setBaselineDist(0);
}
}
}
// Calculate the layout for the print.
int layoutOptions = QwtPlotLayout::IgnoreScrollbars
| QwtPlotLayout::IgnoreFrames;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintMargin) )
layoutOptions |= QwtPlotLayout::IgnoreMargin;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintLegend) )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
((QwtPlot *)this)->plotLayout()->activate(this,
QwtPainter::metricsMap().deviceToLayout(plotRect),
layoutOptions);
if ((pfilter.options() & QwtPlotPrintFilter::PrintTitle)
&& (!titleLabel()->text().isEmpty()))
{
printTitle(painter, plotLayout()->titleRect());
}
if ( (pfilter.options() & QwtPlotPrintFilter::PrintLegend)
&& legend() && !legend()->isEmpty() )
{
printLegend(painter, plotLayout()->legendRect());
}
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if (scaleWidget)
{
int baseDist = scaleWidget->baseLineDist();
int startDist, endDist;
scaleWidget->getBorderDistHint(startDist, endDist);
printScale(painter, axisId, startDist, endDist,
baseDist, plotLayout()->scaleRect(axisId));
}
}
const QRect canvasRect = metricsMap.layoutToDevice(plotLayout()->canvasRect());
// When using QwtPainter all sizes where computed in pixel
// coordinates and scaled by QwtPainter later. This limits
// the precision to screen resolution. A much better solution
// is to scale the maps and print in unlimited resolution.
QwtArray<QwtScaleMap> map(axisCnt);
for (axisId = 0; axisId < axisCnt; axisId++)
{
map[axisId].setTransformation(axisScaleEngine(axisId)->transformation());
const QwtScaleDiv &scaleDiv = *axisScaleDiv(axisId);
map[axisId].setScaleInterval(scaleDiv.lBound(), scaleDiv.hBound());
double from, to;
if ( axisEnabled(axisId) )
{
const int sDist = axisWidget(axisId)->startBorderDist();
const int eDist = axisWidget(axisId)->endBorderDist();
const QRect &scaleRect = plotLayout()->scaleRect(axisId);
if ( axisId == xTop || axisId == xBottom )
{
from = metricsMap.layoutToDeviceX(scaleRect.left() + sDist);
to = metricsMap.layoutToDeviceX(scaleRect.right() - eDist);
}
else
{
from = metricsMap.layoutToDeviceY(scaleRect.bottom() - sDist);
to = metricsMap.layoutToDeviceY(scaleRect.top() + eDist);
}
}
else
{
const int margin = plotLayout()->canvasMargin(axisId);
const QRect &canvasRect = plotLayout()->canvasRect();
if ( axisId == yLeft || axisId == yRight )
{
from = metricsMap.layoutToDeviceX(canvasRect.bottom() - margin);
to = metricsMap.layoutToDeviceX(canvasRect.top() + margin);
}
else
{
from = metricsMap.layoutToDeviceY(canvasRect.left() + margin);
to = metricsMap.layoutToDeviceY(canvasRect.right() - margin);
}
}
map[axisId].setPaintXInterval(from, to);
}
// The canvas maps are already scaled.
QwtPainter::setMetricsMap(painter->device(), painter->device());
printCanvas(painter, canvasRect, map, pfilter);
QwtPainter::resetMetricsMap();
((QwtPlot *)this)->plotLayout()->invalidate();
// reset all widgets with their original attributes.
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintCanvasBackground) )
{
// restore the previous base line dists
for (axisId = 0; axisId < QwtPlot::axisCnt; axisId++ )
{
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if ( scaleWidget )
scaleWidget->setBaselineDist(baseLineDists[axisId]);
}
}
pfilter.reset((QwtPlot *)this);
painter->restore();
}
/*!
\brief Paint the plot into a given rectangle.
Paint the contents of a QwtPlot instance into a given rectangle.
\param painter Painter
\param plotRect Bounding rectangle
\param pfilter Print filter
\sa QwtPlotPrintFilter
*/
void QwtPlot::print(QPainter *painter, const QRect &plotRect,
const QwtPlotPrintFilter &pfilter) const
{
int axisId;
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || size().isNull() )
return;
painter->save();
#if 1
/*
PDF: In Qt4 ( <= 4.3.2 ) the scales are painted in gray instead of
black. See http://trolltech.com/developer/task-tracker/index_html?id=184671&method=entry
The dummy lines below work around the problem.
*/
const QPen pen = painter->pen();
painter->setPen(QPen(Qt::black, 1));
painter->setPen(pen);
#endif
// All paint operations need to be scaled according to
// the paint device metrics.
QwtPainter::setMetricsMap(this, painter->device());
const QwtMetricsMap &metricsMap = QwtPainter::metricsMap();
// It is almost impossible to integrate into the Qt layout
// framework, when using different fonts for printing
// and screen. To avoid writing different and Qt unconform
// layout engines we change the widget attributes, print and
// reset the widget attributes again. This way we produce a lot of
// useless layout events ...
pfilter.apply((QwtPlot *)this);
int baseLineDists[QwtPlot::axisCnt];
if ( pfilter.options() & QwtPlotPrintFilter::PrintFrameWithScales ) {
for (axisId = 0; axisId < QwtPlot::axisCnt; axisId++ ) {
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if ( scaleWidget ) {
baseLineDists[axisId] = scaleWidget->margin();
scaleWidget->setMargin(0);
}
}
}
// Calculate the layout for the print.
int layoutOptions = QwtPlotLayout::IgnoreScrollbars
| QwtPlotLayout::IgnoreFrames;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintMargin) )
layoutOptions |= QwtPlotLayout::IgnoreMargin;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintLegend) )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
((QwtPlot *)this)->plotLayout()->activate(this,
QwtPainter::metricsMap().deviceToLayout(plotRect),
layoutOptions);
if ((pfilter.options() & QwtPlotPrintFilter::PrintTitle)
&& (!titleLabel()->text().isEmpty())) {
printTitle(painter, plotLayout()->titleRect());
}
if ( (pfilter.options() & QwtPlotPrintFilter::PrintLegend)
&& legend() && !legend()->isEmpty() ) {
printLegend(painter, plotLayout()->legendRect());
}
for ( axisId = 0; axisId < QwtPlot::axisCnt; axisId++ ) {
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if (scaleWidget) {
int baseDist = scaleWidget->margin();
int startDist, endDist;
scaleWidget->getBorderDistHint(startDist, endDist);
printScale(painter, axisId, startDist, endDist,
baseDist, plotLayout()->scaleRect(axisId));
}
}
QRect canvasRect = plotLayout()->canvasRect();
/*
The border of the bounding rect needs to ba scaled to
layout coordinates, so that it is aligned to the axes
*/
QRect boundingRect( canvasRect.left() - 1, canvasRect.top() - 1,
canvasRect.width() + 2, canvasRect.height() + 2);
boundingRect = metricsMap.layoutToDevice(boundingRect);
boundingRect.setWidth(boundingRect.width() - 1);
boundingRect.setHeight(boundingRect.height() - 1);
canvasRect = metricsMap.layoutToDevice(canvasRect);
// When using QwtPainter all sizes where computed in pixel
// coordinates and scaled by QwtPainter later. This limits
// the precision to screen resolution. A better solution
// is to scale the maps and print in unlimited resolution.
QwtScaleMap map[axisCnt];
for (axisId = 0; axisId < axisCnt; axisId++) {
map[axisId].setTransformation(axisScaleEngine(axisId)->transformation());
const QwtScaleDiv &scaleDiv = *axisScaleDiv(axisId);
map[axisId].setScaleInterval(scaleDiv.lBound(), scaleDiv.hBound());
double from, to;
if ( axisEnabled(axisId) ) {
const int sDist = axisWidget(axisId)->startBorderDist();
const int eDist = axisWidget(axisId)->endBorderDist();
const QRect &scaleRect = plotLayout()->scaleRect(axisId);
if ( axisId == xTop || axisId == xBottom ) {
from = metricsMap.layoutToDeviceX(scaleRect.left() + sDist);
to = metricsMap.layoutToDeviceX(scaleRect.right() + 1 - eDist);
} else {
from = metricsMap.layoutToDeviceY(scaleRect.bottom() + 1 - eDist );
to = metricsMap.layoutToDeviceY(scaleRect.top() + sDist);
}
} else {
int margin = plotLayout()->canvasMargin(axisId);
if ( axisId == yLeft || axisId == yRight ) {
margin = metricsMap.layoutToDeviceY(margin);
from = canvasRect.bottom() - margin;
to = canvasRect.top() + margin;
} else {
margin = metricsMap.layoutToDeviceX(margin);
from = canvasRect.left() + margin;
to = canvasRect.right() - margin;
}
}
map[axisId].setPaintXInterval(from, to);
}
// The canvas maps are already scaled.
QwtPainter::setMetricsMap(painter->device(), painter->device());
printCanvas(painter, boundingRect, canvasRect, map, pfilter);
QwtPainter::resetMetricsMap();
((QwtPlot *)this)->plotLayout()->invalidate();
// reset all widgets with their original attributes.
if ( pfilter.options() & QwtPlotPrintFilter::PrintFrameWithScales ) {
// restore the previous base line dists
for (axisId = 0; axisId < QwtPlot::axisCnt; axisId++ ) {
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(axisId);
if ( scaleWidget )
scaleWidget->setMargin(baseLineDists[axisId]);
}
}
pfilter.reset((QwtPlot *)this);
painter->restore();
}
/*!
\brief Paint the plot into a given rectangle.
Paint the contents of a QwtPlot instance into a given rectangle.
\param painter Painter
\param plotRect Bounding rectangle
\param pfilter Print filter
\sa QwtPlotPrintFilter
*/
void QwtPlot::print(QPainter *painter, const QRect &plotRect,
const QwtPlotPrintFilter &pfilter) const
{
int axis;
if ( painter == 0 || !painter->isActive() ||
!plotRect.isValid() || size().isNull() )
return;
painter->save();
// All paint operations need to be scaled according to
// the paint device metrics.
QwtPainter::setMetricsMap(this, painter->device());
#if QT_VERSION < 300
if ( painter->device()->isExtDev() )
{
QPaintDeviceMetrics metrics(painter->device());
if ( metrics.logicalDpiX() == 72 && metrics.logicalDpiY() == 72 )
{
// In Qt 2.x QPrinter returns hardcoded wrong metrics.
// So scaling won´t work: we reset to screen resolution
QwtPainter::setMetricsMap(this, this);
}
}
#endif
const QwtMetricsMap &metricsMap = QwtPainter::metricsMap();
// It is almost impossible to integrate into the Qt layout
// framework, when using different fonts for printing
// and screen. To avoid writing different and Qt unconform
// layout engines we change the widget attributes, print and
// reset the widget attributes again. This way we produce a lot of
// useless layout events ...
pfilter.apply((QwtPlot *)this);
int baseLineDists[QwtPlot::axisCnt];
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintCanvasBackground) )
{
// In case of no background we set the backbone of
// the scale on the frame of the canvas.
for (axis = 0; axis < QwtPlot::axisCnt; axis++ )
{
if ( d_scale[axis] )
{
baseLineDists[axis] = d_scale[axis]->baseLineDist();
d_scale[axis]->setBaselineDist(0);
}
}
}
// Calculate the layout for the print.
int layoutOptions = QwtPlotLayout::IgnoreScrollbars
| QwtPlotLayout::IgnoreFrames;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintMargin) )
layoutOptions |= QwtPlotLayout::IgnoreMargin;
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintLegend) )
layoutOptions |= QwtPlotLayout::IgnoreLegend;
d_layout->activate(this, QwtPainter::metricsMap().deviceToLayout(plotRect),
layoutOptions);
if ((pfilter.options() & QwtPlotPrintFilter::PrintTitle)
&& (!d_lblTitle->text().isEmpty()))
{
printTitle(painter, d_layout->titleRect());
}
if ( (pfilter.options() & QwtPlotPrintFilter::PrintLegend)
&& !d_legend->isEmpty() )
{
printLegend(painter, d_layout->legendRect());
}
for ( axis = 0; axis < QwtPlot::axisCnt; axis++ )
{
if (d_scale[axis])
{
int baseDist = d_scale[axis]->baseLineDist();
int startDist, endDist;
d_scale[axis]->minBorderDist(startDist, endDist);
printScale(painter, axis, startDist, endDist,
baseDist, d_layout->scaleRect(axis));
}
}
const QRect canvasRect = metricsMap.layoutToDevice(d_layout->canvasRect());
// When using QwtPainter all sizes where computed in pixel
// coordinates and scaled by QwtPainter later. This limits
// the precision to screen resolution. A much better solution
// is to scale the maps and print in unlimited resolution.
QwtArray<QwtDiMap> map(axisCnt);
for (axis = 0; axis < axisCnt; axis++)
{
const QwtScaleDiv &scaleDiv = d_as[axis].scaleDiv();
map[axis].setDblRange(scaleDiv.lBound(),
scaleDiv.hBound(), scaleDiv.logScale());
double from, to;
if ( axisEnabled(axis) )
{
const int sDist = d_scale[axis]->startBorderDist();
const int eDist = d_scale[axis]->endBorderDist();
const QRect &scaleRect = d_layout->scaleRect(axis);
if ( axis == xTop || axis == xBottom )
{
from = metricsMap.layoutToDeviceX(scaleRect.left() + sDist);
to = metricsMap.layoutToDeviceX(scaleRect.right() - eDist);
}
else
{
from = metricsMap.layoutToDeviceY(scaleRect.bottom() - sDist);
to = metricsMap.layoutToDeviceY(scaleRect.top() + eDist);
}
}
else
{
const int margin = plotLayout()->canvasMargin(axis);
const QRect &canvasRect = plotLayout()->canvasRect();
if ( axis == yLeft || axis == yRight )
{
from = metricsMap.layoutToDeviceX(canvasRect.bottom() - margin);
to = metricsMap.layoutToDeviceX(canvasRect.top() + margin);
}
else
{
from = metricsMap.layoutToDeviceY(canvasRect.left() + margin);
to = metricsMap.layoutToDeviceY(canvasRect.right() - margin);
}
}
map[axis].setIntRange( qwtInt(from), qwtInt(to));
}
// The maps are already scaled.
QwtPainter::setMetricsMap(painter->device(), painter->device());
printCanvas(painter, canvasRect, map, pfilter);
QwtPainter::resetMetricsMap();
d_layout->invalidate();
// reset all widgets with their original attributes.
if ( !(pfilter.options() & QwtPlotPrintFilter::PrintCanvasBackground) )
{
// restore the previous base line dists
for (axis = 0; axis < QwtPlot::axisCnt; axis++ )
{
if ( d_scale[axis] )
d_scale[axis]->setBaselineDist(baseLineDists[axis]);
}
}
pfilter.reset((QwtPlot *)this);
painter->restore();
}
