Details
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Bug
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Resolution: Out of scope
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P3: Somewhat important
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4.7.2
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None
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Windows 7; Ubuntu 10.10
Description
If you render a QGraphicsScene containing a QGraphicsSvgItem to a QPrinter, the generated PostScript is garbage if the SVG contains a <rect> element.
To reproduce:
- Run the program below as-is, printing to a Postscript printer. (I am using the "Print to file" option in Ubuntu so as not to waste paper, but the results are the same if you actually print to a physical printer.) Notice:
- It finishes quickly
- If you open the PS document in an image viewer, the full image is printed
- If you open the PS document in a text editor, it is relatively clean (by postscript standards...)
- Next, uncomment the line in the SVG containing the <rect> element (marked with comment "problem" at the end of the line) and run it again. Notice:
- It takes a long, long time to generate the output.
- If you open the PS document in an image viewer, the image is clipped at the size of the rectangle.
- If you open the PS document in a text editor, it contains a huge block of garbage commands.
main.cpp
#include <QtGui> #include <QtSvg> int main(int argc, char **argv) { QApplication app(argc, argv); QTemporaryFile temp; temp.open(); temp.write( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.2\" " "baseProfile=\"tiny\" width=\"500\" height=\"500\" " "viewBox=\"0 0 500 500\">" // "<rect width=\"200\" height=\"200\" fill=\"white\"/>" // problem "<circle cx=\"100\" cy=\"100\" r=\"50\" stroke=\"black\" " "stroke-width=\"2\" fill=\"red\"/>" "<circle cx=\"400\" cy=\"400\" r=\"50\" stroke=\"black\" " "stroke-width=\"2\" fill=\"blue\"/>" "<circle cx=\"250\" cy=\"250\" r=\"180\" stroke=\"black\" " "stroke-width=\"2\" fill=\"green\"/>" "</svg>"); temp.flush(); temp.close(); QGraphicsScene scene; QGraphicsSvgItem *item = new QGraphicsSvgItem(temp.fileName()); scene.addItem(item); // // It displays fine in the graphics view. // QGraphicsView view(&scene); // view.show(); // return app.exec(); // It vomits using the postscript printer. QPrinter printer(QPrinter::HighResolution); QPrintDialog dialog(&printer); if (dialog.exec() == QDialog::Accepted) { QPainter painter(&printer); scene.render(&painter); } }
It is fine going to a QGraphicsView. I have reproduced this problem on Ubuntu 10.10 and Windows 7 (physical print and XPS print), although on one Windows 7 machine I was not able to reproduce it. It also works fine if printing to PDF; just postscript is generating garbage.
Attachments
Issue Links
- is required for
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QTBUG-37693 QtPrintSupport - Painting Issues
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- Open
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