Gtk3 migration

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Thomas edited this page May 4, 2021 · 13 revisions

GTK 2 -> 3

GNOME Migration guide

All preparation steps seem to work already (so we hopefully only have to look at the time of migration sections)
- Cairo for drawing -> There are two files still using GDK_Drawable: gui/source 448 & libs/tiled-bitmaps/tools 26. Change needed to use Cairo drawing instead
Building with Gtk3 gives no errors during cmake preparations (simply remove libgtk2 and install libgtk3)

Known current issues

GtkRuler is not supported. Best idea is probably to look at some other opensource project which used GtkRuler and ported it to gtk3 (Inkscape)
- GIMP commit where GTKruler was ported to gimpRuler
- ink-ruler.h (Current)
- ink-ruler.cpp (Current)
- ruler.cpp (2014)
- ruler.h (2013)
Build files with specific errors for Scroom and GtkRuler