<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hello, You may already know that with Gtk 3, it is possible to take vector screenshots from a GUI. The utility created by Joachim Breitner (nomeata) takes care of the job: <a href="https://github.com/nomeata/gtk-vector-screenshot">https://github.com/nomeata/gtk-vector-screenshot</a> But, this does not work out of the box. I have tried to take vector screenshots from LibreOffice gtk3 gui, and it led to an immediate crash. I have debugged the soffice binary, and I came across several assertions that are checked and some aborts in case of specific threading situations. I have temporarily disabled these assertions and aborts, and by further disabling the autosave, everything was fine, and I could take vector screenshots. The tiny patch is attached. I have created a proof of concept document from "LibreOffice Writer Guide", section titled “20. Customizing Writer”, and created vector screenshots in SVG format for almost all of the previously raster screenshots. The quality of the PDF output is much better, the file is more visually attractive and it is better for print and display. Vector ODT: <a href="https://wiki.documentfoundation.org/images/7/79/WG7120-CustomizingWriter-vector.odt">https://wiki.documentfoundation.org/images/7/79/WG7120-CustomizingWriter-vector.odt</a> Vector PDF: <a href="https://wiki.documentfoundation.org/images/4/4b/WG7120-CustomizingWriter-vector.pdf">https://wiki.documentfoundation.org/images/4/4b/WG7120-CustomizingWriter-vector.pdf</a> There are few remaining things: 1. Vector screenshot does not add window decorations, so some workaround is needed. For example, some toplevel Gtk widgets contain decorations in the screenshots, so these can be used for containing the window contents. 2. Trying to take screenshots closes menus, etc, and this can be handled by creating a delay in taking screenshots. 3. Not everything is vector. For example, document contents in LibreOffice and also toolbar and status bar icons are not vectors. This is because of the way text and images are rendered in LibreOffice. If you take screenshots from other applications, the output is different. Try Glade and Gedit for the comparison. On the development side, I doubt that having these aborts will be useful at runtime. There are hundreds of aborts and thousands of asserts in the code in which I think should be revised. Crashing the application in case of some problem is usually a bad idea. Assertions in C++, and Why Not to Use assert() <a href="https://web.archive.org/web/20191110223903/https://www.softwariness.com/articles/assertions-in-cpp/">https://web.archive.org/web/20191110223903/https://www.softwariness.com/articles/assertions-in-cpp/</a> Regards, Hossein </div></div>