Update of bug #18574 (project mypaint):
Status: Confirmed => In Progress
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Follow-up Comment #10:
https://gitorious.org/mypaint/mypaint/commit/366e1007755c8e572 contains the
basis of a proper interaction mode stack, which abstracts out the event
handling. Hopefully it doesn't introduce any regressions yet :)
Input events are connected to each TDW's eventbox, but are dispatched only to
the handler methods of the top mode on the stack.
Backend-wise, rendering can be farmed out to anything canvas-like which can
sit in an eventbox.
It should now be possible to add actions for manipulating the mode stack in a
stateful way: so if we want a button for entering a oneshot frame manipulation
mode which starts on the next button-press-drag, we can add it.
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<http://gna.org/bugs/?18574>
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