print preview widget
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@rest
Super.
The widgets render in the size they have/are.
If you want it bigger, you could print to image and scale it.
You can maybe even do it directly with render and painter.scale but
i never tested this.void MainWindow::printshot() { QPixmap pix = QPixmap::grabWindow(QApplication::desktop()->winId()); QPrinter printer(QPrinter::HighResolution); printer.setOrientation(QPrinter::Landscape); QPainter painter; painter.begin(&printer); double xscale = printer.pageRect().width() / double(pix.width()); double yscale = printer.pageRect().height() / double(pix.height()); double scale = qMin(xscale, yscale); painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2, printer.paperRect().y() + printer.pageRect().height() / 2); painter.scale(scale, scale); painter.translate(-width() / 2, -height() / 2); // note uses the form width/height! use pix.h/w if random image painter.drawPixmap(0, 0, pix); painter.end(); }If you need very high fidelity, split your paintEvent into a new function taking a QPainter *
and call it for printing too. That way you can scale to use the full DPI of the printer.- and is in the same line as the toolbar from where i do the printaction
I do not understand this line :)
- and is in the same line as the toolbar from where i do the printaction
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@mrjj thank you so much but solved it last night, was just a problem when i was using the constructor for the printpreview
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@mrjj said in print preview widget:
printer.setOutputFileName(filename);
you control where with setOutputFileName
make sure to use / and not \ for the full path to the file -
void MainWindow::on_actionPrint_triggered()
{
QPrinter *printer = new QPrinter(QPrinter::HighResolution);
printer->setOutputFormat(QPrinter::PdfFormat);printer->setPaperSize(QPrinter::A4);
printer->setOrientation(QPrinter::Landscape);
printer->setFullPage(true);
//printer->setResolution(100);
printer->setOutputFileName("Desktop//aaaa.pdf");QPrintPreviewWidget *preview =0;
preview = new QPrintPreviewWidget(printer,preview);preview->print();
connect(preview, SIGNAL(paintRequested(QPrinter*)),allWorkspaceShapes[currentIndex]->drawShape,SLOT(Print(QPrinter*)));
preview->show();
}
i used this and still didn't get anything, i have another problem in the code maybe?
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void MainWindow::on_actionPrint_triggered()
{
QPrinter *printer = new QPrinter(QPrinter::HighResolution);
printer->setOutputFormat(QPrinter::PdfFormat);printer->setPaperSize(QPrinter::A4);
printer->setOrientation(QPrinter::Landscape);
printer->setFullPage(true);
//printer->setResolution(100);
printer->setOutputFileName("Desktop//aaaa.pdf");QPrintPreviewWidget *preview =0;
preview = new QPrintPreviewWidget(printer,preview);preview->print();
connect(preview, SIGNAL(paintRequested(QPrinter*)),allWorkspaceShapes[currentIndex]->drawShape,SLOT(Print(QPrinter*)));
preview->show();
}
i used this and still didn't get anything, i have another problem in the code maybe?
@rest said in print preview widget:
That is NOT a valid path
setOutputFileName("Desktop//aaaa.pdf");Please use a valid full path and only single /
like
C:/Users/SOMEUSERNAME/Desktop/test.pdf -
@mrjj and then i used this and still does not work
printer->setOutputFileName("C:/Users/Public/Public Documents/test.pdf"); -
@mrjj solved, i had make the print preview and printer object in the constructor of the window
