Question #251738 on qpdfview changed: https://answers.launchpad.net/qpdfview/+question/251738
Adam Reichold proposed the following answer: Hello, Am 22.07.2014 20:51, schrieb Adam Reichold: > Question #251738 on qpdfview changed: > https://answers.launchpad.net/qpdfview/+question/251738 > > Adam Reichold proposed the following answer: > Hello again, > > Am 22.07.2014 20:32, schrieb S. Razi Alavizadeh: >> Question #251738 on qpdfview changed: >> https://answers.launchpad.net/qpdfview/+question/251738 >> >> S. Razi Alavizadeh posted a new comment: >> Hello, >> They are available and painted as action's icon. >> And commenting out the calls to draw those icons fix the problem (also slow >> scrolling is fixed). >> Moreover, using QPainter::drawPixmap(QIcon::pixmap()) removes the debug >> outputs but nothing is painted (maybe iconRect should be modified?) > > If you QIcon::pixmap() for an SVG-only icon, this should just create a > painter itself and draw to it. Hence you might not see the debug output > of the main painter, but the results should be identical. > >> But I think you should use QSvgRenderer, it works but it needs the > filenames. > > I am not sure where the difference to using QIcon is and I suspect it > uses QSvgRenderer internally. In any case, I do want to draw the > platform-supplied icons which often are pixmaps and I use the SVG icons > as fallbacks only. > > I'll look at the Qt source code what QIcon actually uses to draw onto a > QPainter. Have you tried to use QSvgRenderer directly? (Maybe using a > resource path like ":/icons/image-loading.svg".) As suspected, QSvgIconEngine uses QSvgRenderer internally, c.f. [1]. It even uses the QPainter::drawPixmap(QIcon::pixmap()) idiom internally to achieve caching. So I don't think this would solve the problem. Best regards, Adam. [1] https://qt.gitorious.org/qt/qt/source/5049696cafe6eb9b75966930e5058fd98fa8d18f:src/plugins/iconengines/svgiconengine/qsvgiconengine.cpp Best regards, Adam. >> Best Regards, >> Razi >> > > Best regards, Adam. > -- You received this question notification because you are a member of qpdfview, which is an answer contact for qpdfview. -- Mailing list: https://launchpad.net/~qpdfview Post to : [email protected] Unsubscribe : https://launchpad.net/~qpdfview More help : https://help.launchpad.net/ListHelp
