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NEW: added JKQTBasePlotter::grabPixelImage() and JKQTPlotter::grabPixelImage(), which grab the plotter into a QImage

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NEW: added option to not display the preview dialog to JKQTBasePlotter::copyPixelImage() and JKQTPlotter::copyPixelImage()
This commit is contained in:
jkriege2 2022-08-26 12:28:06 +02:00
parent d283f6b294
commit 7030475568
4 changed files with 94 additions and 61 deletions
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2
doc/dox/whatsnew.dox
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@ -35,6 +35,8 @@ Changes, compared to \ref page_whatsnew_V4_0_0 "v4.0.0" include:
<li>NEW: improved plotting speed for line-graphs by a compression algorithm (see JKQTPGraphLinesCompressionMixin) that removes overlaying lines (e.g. in JKQTPXYLineGraph)</li>
<li>NEW: improved plotting speed for line-graphs by a clipping algorithm (applies to JKQTPXYLineGraph, JKQTPGraphErrorStyleMixin, JKQTPSpecialLineHorizontalGraph, JKQTPSpecialLineVerticalGraph and others)</li>
<li>NEW: improved plotting speed for scatter-graphs by not calling draw functions for symbols outside the plot window (e.g. in JKQTPXYLineGraph)</li>
<li>NEW: added JKQTBasePlotter::grabPixelImage() and JKQTPlotter::grabPixelImage(), which grab the plotter into a QImage</li>
<li>NEW: added option to not display the preview dialog to JKQTBasePlotter::copyPixelImage() and JKQTPlotter::copyPixelImage()</li>
</ul></li>
<li>JKQTMathText:<ul>

137
lib/jkqtplotter/jkqtpbaseplotter.cpp
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@ -3851,58 +3851,57 @@ void JKQTBasePlotter::saveAsPixelImage(const QString& filename, bool displayPrev
}
}
void JKQTBasePlotter::copyPixelImage() {
/*qDebug()<<gridPrintingSize.width()<<", "<<gridPrintingSize.height();
qDebug()<<widgetWidth<<", "<<widgetHeight;
qDebug()<<paintMagnification;*/
/* QImage png(gridPrintingSize, QImage::Format_ARGB32);
{
JKQTPEnhancedPainter painter;
painter.begin(&png);
painter.setRenderHint(JKQTPEnhancedPainter::Antialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::TextAntialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::SmoothPixmapTransform);
painter.setRenderHint(JKQTPEnhancedPainter::HighQualityAntialiasing);
//calcPlotScaling(painter);
gridPaint(painter, gridPrintingSize);
painter.end();
QImage JKQTBasePlotter::grabPixelImage(QSize size, bool showPreview)
{
gridPrintingCalc();
//std::cout<<gridPrintingSize.width()<<", "<<gridPrintingSize.height()<<std::endl;
printSizeX_Millimeter=gridPrintingSize.width();
printSizeY_Millimeter=gridPrintingSize.height();
if (!showPreview) {
printSizeX_Millimeter=widgetWidth;
printSizeY_Millimeter=widgetHeight;
}
if (!showPreview||exportpreview(gridPrintingSize, false)) {
QClipboard *clipboard = QApplication::clipboard();
qDebug()<<"clipboard before adding content:\n"<<clipboard->mimeData()->formats();
clipboard->setImage(png);
qDebug()<<"clipboard after adding content:\n"<<clipboard->mimeData()->formats();
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
if (size.isEmpty() || size.isNull() || !size.isValid() || size.width()*size.height()==0) size=QSizeF(double(printSizeX_Millimeter), double(printSizeY_Millimeter)).toSize();
QImage png(size, QImage::Format_ARGB32);
{
png.fill(Qt::transparent);
JKQTPEnhancedPainter painter;
painter.begin(&png);
painter.setRenderHint(JKQTPEnhancedPainter::Antialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::TextAntialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::SmoothPixmapTransform);
#if (QT_VERSION<QT_VERSION_CHECK(6, 0, 0))
painter.setRenderHint(JKQTPEnhancedPainter::NonCosmeticDefaultPen, true);
painter.setRenderHint(JKQTPEnhancedPainter::HighQualityAntialiasing);
#endif
*/
/*calcPlotScaling(painter);
gridPaint(painter, png.rect().size());*/
exportpreviewPaintRequested(painter, QSizeF(printSizeX_Millimeter, printSizeY_Millimeter).toSize());
painter.end();
}
QApplication::restoreOverrideCursor();
return png;
}
return QImage();
}
void JKQTBasePlotter::copyPixelImage(bool showPreview) {
gridPrintingCalc();
//std::cout<<gridPrintingSize.width()<<", "<<gridPrintingSize.height()<<std::endl;
printSizeX_Millimeter=gridPrintingSize.width();
printSizeY_Millimeter=gridPrintingSize.height();
if (exportpreview(gridPrintingSize, false)) {
if (!showPreview||exportpreview(gridPrintingSize, false)) {
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
//if (exportpreview(gridPrintingSize, false)) {
QImage png(QSizeF(double(printSizeX_Millimeter), double(printSizeY_Millimeter)).toSize(), QImage::Format_ARGB32);
{
png.fill(Qt::transparent);
JKQTPEnhancedPainter painter;
painter.begin(&png);
painter.setRenderHint(JKQTPEnhancedPainter::Antialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::TextAntialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::SmoothPixmapTransform);
#if (QT_VERSION<QT_VERSION_CHECK(6, 0, 0))
painter.setRenderHint(JKQTPEnhancedPainter::NonCosmeticDefaultPen, true);
painter.setRenderHint(JKQTPEnhancedPainter::HighQualityAntialiasing);
#endif
/*calcPlotScaling(painter);
gridPaint(painter, png.rect().size());*/
exportpreviewPaintRequested(painter, QSizeF(printSizeX_Millimeter, printSizeY_Millimeter).toSize());
painter.end();
}
QByteArray svgdata;
{
@ -3926,32 +3925,52 @@ void JKQTBasePlotter::copyPixelImage() {
}
if (!showPreview) {
printSizeX_Millimeter=widgetWidth;
printSizeY_Millimeter=widgetHeight;
}
QImage png(QSizeF(double(printSizeX_Millimeter), double(printSizeY_Millimeter)).toSize(), QImage::Format_ARGB32);
{
png.fill(Qt::transparent);
JKQTPEnhancedPainter painter;
painter.begin(&png);
painter.setRenderHint(JKQTPEnhancedPainter::Antialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::TextAntialiasing);
painter.setRenderHint(JKQTPEnhancedPainter::SmoothPixmapTransform);
#if (QT_VERSION<QT_VERSION_CHECK(6, 0, 0))
painter.setRenderHint(JKQTPEnhancedPainter::NonCosmeticDefaultPen, true);
painter.setRenderHint(JKQTPEnhancedPainter::HighQualityAntialiasing);
#endif
/*calcPlotScaling(painter);
gridPaint(painter, png.rect().size());*/
exportpreviewPaintRequested(painter, QSizeF(printSizeX_Millimeter, printSizeY_Millimeter).toSize());
painter.end();
}
QClipboard *clipboard = QApplication::clipboard();
//qDebug()<<"clipboard before adding content:\n"<<clipboard->mimeData()->formats();
//clipboard->setImage(png);
clipboard->clear();
clipboard->setPixmap(QPixmap::fromImage(png));
QMimeData* mime=new QMimeData();
mime->setImageData(QPixmap::fromImage(png));
QBuffer pngbuf;
png.save(&pngbuf, "png");
mime->setData("image/x-png", pngbuf.data());
png.save(&pngbuf, "bmp");
mime->setData("image/bmp", pngbuf.data());
mime->setData("image/svg+xml", svgdata);
clipboard->setMimeData(mime);
//qDebug()<<"clipboard after adding content:\n"<<clipboard->mimeData()->formats();
QClipboard *clipboard = QApplication::clipboard();
//qDebug()<<"clipboard before adding content:\n"<<clipboard->mimeData()->formats();
//clipboard->setImage(png);
clipboard->clear();
clipboard->setPixmap(QPixmap::fromImage(png));
QMimeData* mime=new QMimeData();
mime->setImageData(QPixmap::fromImage(png));
QBuffer pngbuf;
png.save(&pngbuf, "png");
mime->setData("image/x-png", pngbuf.data());
png.save(&pngbuf, "bmp");
mime->setData("image/bmp", pngbuf.data());
mime->setData("image/svg+xml", svgdata);
clipboard->setMimeData(mime);
//qDebug()<<"clipboard after adding content:\n"<<clipboard->mimeData()->formats();
QApplication::restoreOverrideCursor();
//}
QApplication::restoreOverrideCursor();
}

6
lib/jkqtplotter/jkqtpbaseplotter.h
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@ -1314,8 +1314,10 @@ class JKQTPLOTTER_LIB_EXPORT JKQTBasePlotter: public QObject {
/** \brief save the current plot as a pixel image image (PNG ...), if filename is empty a file selection dialog is displayed */
void saveAsPixelImage(const QString& filename=QString(""), bool displayPreview=true, const QByteArray &outputFormat=QByteArray());
/** \brief copy the current plot as a pixel image to the clipboard */
void copyPixelImage();
/** \brief save the current plot as a pixel image into a QImage with the given size */
QImage grabPixelImage(QSize size=QSize(), bool showPreview=false);
/** \brief copy the current plot as a pixel+svg image to the clipboard */
void copyPixelImage(bool showPreview=true);
#ifndef JKQTPLOTTER_COMPILE_WITHOUT_PRINTSUPPORT
/** \brief save the current plot as a SVG file, with the current widget aspect ratio, if filename is empty a file selection dialog is displayed

10
lib/jkqtplotter/jkqtplotter.h
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@ -937,6 +937,14 @@ class JKQTPLOTTER_LIB_EXPORT JKQTPlotter: public QWidget {
/** \brief \copydoc actMouseLeftAsPanView */
const QAction *getActMouseLeftAsPanView() const;
/** \brief save the current plot as a pixel image into a QImage with the given size */
inline QImage grabPixelImage(QSize size=QSize(), bool showPreview=false) {
return plotter->grabPixelImage(size,showPreview);
}
/** \brief copy the current plot as a pixel+svg image to the clipboard */
inline void copyPixelImage(bool showPreview=true) {
plotter->copyPixelImage(showPreview);
}
public slots:
/** \brief set the current plot magnification */
@ -1041,6 +1049,8 @@ class JKQTPLOTTER_LIB_EXPORT JKQTPlotter: public QWidget {
inline void copyDataMatlab() {
plotter->copyDataMatlab();
}
/** \brief this method zooms the graph so that all plotted datapoints are visible.
*
* \param zoomX if set \c true (default) zooms the x axis