[gtk] (26 commits) ...Merge branch 'wip/baedert/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  e6f6d1e... main: Add & use gdk_event_dup_axes() (*)
  a8213d7... gl renderer: Avoid setting modelview to identical values (*)
  810cd78... icontheme: Make icon_paintable_ensure_texture() return an u (*)
  e747ea7... pixbufutils: Only convert icon size to string once (*)
  21299cc... icontheme: Make some constant values const (*)
  bd5d161... GskTransform: Avoid a ref+unref pair (*)
  186287e... GskTransform: Fix identity transform class name (*)
  cde4354... gl renderer: Unify new clip/viewport rects in blur_texture( (*)
  4b3bbe0... gl renderer: Create shader-global uniform ops on draw() (*)
  634fa77... gl renderer: Add missing debug output for repeat ops (*)
  e1cf0cf... gl renderer: Proper state tracking for color matrix ops (*)
  fdda4e4... GskTransform: Add nullable annotations to _equals() (*)
  2feac27... layoutoverlay: Avoid adding 0 sized color nodes (*)
  c34f989... layoutoverlay: Avoid adding transparent color nodes (*)
  0b4ed8d... renderborder: Avoid 0 width outline color nodes (*)
  a2a70c3... rendernode: Sort diff() requirements by complexity (*)
  9fefa7b... rendernode: Different uniformity in border nodes (*)
  2031c5b... textlayout: Remove dead offset_y code (*)
  9eaeaa8... label: Refactor snapshot() (*)
  e7a326e... label: Refactor get_layout_location() (*)
  bce4d66... gskpango: Fix a potential cairo_t leak (*)
  98b9920... gskpango: Remove bounds rect (*)
  cf35237... gskpango: Correct a comment (*)
  526c761... gl renderer: Check for pointer equality in rounded_rect_equ (*)
  e90f5e8... gskpango: Don't copy fg color (*)
  e854b90... Merge branch 'wip/baedert/for-master' into 'master'

(*) This commit already existed in another branch; no separate mail sent