Bug 540674: [GTK4] Adapt to new drawing model changes

This patch furthers the work on the drawing model changes in GTK4.

1) Remove instances of GdkEventExpose as this has been gone in GTK3

2) Replace GDK drawing API with purely Cairo sourced drawing contexts
provided by draw/snapshot handlers or other such callbacks. This include
methods like Canvas.scroll().

3) Fixes the snapshot handling in SWT-GTK4 and propagates all snapshots
down the hierarchy to ensure things like Canvases drawing properly.

Change-Id: If96d1e0d33c97aeb5eed7bb6e5f478ee1785f30a
Signed-off-by: Eric Williams <ericwill@redhat.com>
19 files changed
tree: b9d69d1d746eaac4c049dc92974b94ece2854912
  1. bundles/
  2. examples/
  3. features/
  4. local-build/
  5. tests/
  6. .gitignore
  10. README.md
  11. pom.xml

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