Context API
This adds the context API as described here. The main practical change
now is that C is not longer directly accessible but has to be accessed
through accessor functions. This basically adds the implementation of
the API and adaption of existing code with some minor changes. The next
task of course is to actually use this design to cleanup of bad level
calls and global access, in blenkernel, blenloader.
http://wiki.blender.org/index.php/BlenderDev/Blender2.5/Context
Error, Warning and Debug Info Reporting
This adds the error reporting API as described here. It should help
clean up error() calls in non-ui code, but eventually can become used
for gathering messages for a console window, and throwing exceptions
in python scripts when an error happens executing something.
http://wiki.blender.org/index.php/BlenderDev/Blender2.5/Reports
* Added support for defining properties for operator buttons, with
uiButGetOperatorPtrRNA. Needed to cleanup a hack that was there
for operator properties in RNA, now a separate OperatorProperties
type is used for storing operator properties, instead of being part
of the Operator type itself.
* Allow selecting menu items with mouse release instead of press again.
* Fix some cases with hanging tooltips in the UI.
More notifier and redraw cleanup
- notifiers are not filtered anymore, apart from window/screen notifiers,
they get to all regions.
- fixed drawing of 'action zones' in areas.
- added support for basic multilayer draw, like for action zones now,
and future other area decorations (tabs, region handlers)
check: ED_area_overdraw_flush()
ED_area_overdraw()
- bugfix in UI redraw tags, it was calling region pointer in free'd
data
- added notifier for marker-changed
- added keymap for markers to ipo window
* Only open tooltip when the mouse is still over the button.
* Remove an unnecessary redraw call, though the two mentioned
in the previous commit seem to be working OK (it's for action
buttons when you move the mouse away from the button, holding
the mouse button down).
* Fix missing alt key in key event strings.
Test for Brecht: this line makes drawing buttons fine.
However note:
- redraws on lines 3107 and 3024 don't do anything
- tooltip timer is messing with redraws too, if you
have tooltips on, it continuously sends redraws.
- I would code tooltip to reset on any mouse move,
and only start timer when mouse is still completely.
That would make them appear much more quietly.
More notifier cleanup;
- removed view2d sync notifier, its data operations are too complex
for UI hints/notes, direct calls work too :)
- updated missing gpl header in region file
Noticed weird delay on menu refreshing now... will check.
Work on getting notifiers in shape.
- Most important: local (to own region or area) redraw notifiers
have been depricated. This is not a good or correct notifier anyway.
Notifiers should be signals to other areas.
- Instead use these 2 functions:
ED_area_tag_redraw(area);
ED_region_tag_redraw(region);
It seems to me good convention to keep the area/region redraw tag
itself protected everywhere, for future improvements.
- Also added a basic WM function that checks overlapping regions,
and flushes redraws to underlying regions. This makes menus and
buttons allow to only send local region redraws.
(Brought back two "swapbuffer indicators" to test this.
- Todo: area 'action zone' redraws, and fixing other notifiers...
sending data pointers in a notifier seems to be bad idea.
operators. RNA property buttons will automatically fill in the label, min/max,
etc if they are not specified. Operator menu buttons will look up the key
combination in the handlers and add it automatically.
uiDefButR, uiDefIconButR, uiDefIconTextButR
uiDefButO, uiDefIconButO, uiDefIconTextButO
uiDefButO takes a context pointer to do the key lookup, don't really like this..
and event handling code still, how it integrates with operators and
handlers is not worked out yet. For testing, Ctrl+Q quit now shows
a confirmation popup using the following call:
okee_operator(C, "WM_OT_exit_blender", "Quit Blender");
* Added context pointer to function callbacks for buttons and blocks.
* Added a uiBlockSetHandleFunc, which will be called with the button
return value. This seems kind of redundant with uiBlockSetButmFunc,
but the latter uses a2 to pass the value.
a special UI handler which makes the code clearer. This UI handler is attached
to the region along with other handlers, and also gets a callback when all
handlers for the region are removed to ensure things are properly cleaned up.
This should fix XXX's in the UI code related to events and context switching.
Most of the changes are in interface_handlers.c, which was renamed from
interface_ops.c, to convert operators to the UI handler. UI code notes:
* uiBeginBlock/uiEndBlock/uiFreeBlocks now takes a context argument, this is
required to properly cancel things like timers or tooltips when the region
gets removed.
* UI_add_region_handlers will add the region level UI handlers, to be used
when adding keymap handlers etc. This replaces the UI keymap.
* When the UI code starts a modal interaction (number sliding, text editing,
opening a menu, ..), it will add an UI handler at the window level which
will block events.
Windowmanager changes:
* Added an UI handler next to the existing keymap and operator modal handlers.
It has an event handling and remove callback, and like operator modal handlers
will remember the area and region if it is registered at the window level.
* Removed the MESSAGE event.
* Operator cancel and UI handler remove callbacks now get the
window/area/region restored in the context, like the operator modal and UI
handler event callbacks.
* Regions now receive MOUSEMOVE events for the mouse going outside of the
region. This was already happening for areas, but UI buttons are at the region
level so we need it there.
Issues:
* Tooltips and menus stay open when switching to another window, and button
highlight doesn't work without moving the mouse first when Blender starts up.
I tried using some events like Q_FIRSTTIME, WINTHAW, but those don't seem to
arrive..
* Timeline header buttons seem to be moving one pixel or so sometimes when
interacting with them.
* Seems not due to this commit, but UI and keymap handlers are leaking. It
seems that handlers are being added to regions in all screens, also in regions
of areas that are not visible, but these handlers are not removed. Probably
there should only be handlers in visible regions?
