Ok! I can use the pdf format but the dimensions of the draw area? Il Sab 21 Apr 2018, 07:31 Nicola Fontana <n...@entidi.it> ha scritto:
> Il Sat, 21 Apr 2018 04:01:21 +0200 arkkimede <arkkim...@gmail.com> > scrisse: > > > HI! > > I've realized an App with GTK3 and the library CAIRO to plot results of > > measurements. > > I use the function "cairo_surface_write_to_png" to obtain a png file > that I > > put on a paper of format A4 (with usual resolution of 300dpi) to generate > > reports. > > Consider also that preliminary plot are observed on a screen with > > resolution 1920x1080. > > > > The question is: > > > > Could you advice me dimensions in pixels of the draw area in order to > > obtain png file to plot on A4 paper and see (more or less) similar > pictures > > on the screen > > (or different dimensions for the plot on png and dimensions for the plot > on > > screen)? > > Hi, > > the PNG backend must not be used for serious applications. From > the doc [1]: > > It is a toy API. It only offers very simple support for > reading and writing PNG files, which is sufficient for testing > and demonstration purposes. > > So my advice is "use the PDF backend". > > [1] https://cairographics.org/manual/cairo-PNG-Support.html > > Ciao. > -- > Nicola > _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
