Blender Git Loki

GPencil: Refactor out space conversion APIs in response to Sergey's changes

Merge branch 'master' into GPencil_EditStrokes

Conflicts (Unresolved):
source/blender/editors/gpencil/gpencil_paint.c

Code Cleanup - Remove dead code

Border Select for GPencil strokes

Modified GPencil pie menu to work with edit modes

Hack: Use same handling logic for finding "active" GPencil block in timeline as for 3D View

This is not a terribly nice hack, but it gives the behaviour that users expect
more often than not. Namely, this enables:
* GPencil keyframes now show up in timeline
* The next/prev keyframe buttons on the Timeline header work correctly
(i.e. they can "see" the GPencil keyframes)

Keymaps UI now shows stroke editing keymap

DKEY-Tab toggles GPencil Stroke Editing

UI: Add toggle for stroke editmode to sequencer properties panel (since it doesn't have a toolbar)

GPencil Editing: "Stroke Edit Mode"

Changed the way that the keybindings for the editing tools for strokes work,
to be less clunky to work with.

Now, instead of holding down DKEY, you instead enter "Stroke Edit Mode" (via
a toggle button in the "Edit Strokes" button in the toolbar). This enables a
keymap (Grease Pencil Stroke Edit Mode) which is only active when this setting
is enabled; the keybindings in this keymap are designed so that pressing the
normal hotkeys will affect the strokes as expected (instead of whatever else
may be in the viewport at the time instead).

Fix compiler warning from changing some types

Code cleanup: Port flags for bGPdata to a enum

Support for jumping between Grease Pencil keyframes

* Added support for jumping between Grease Pencil keyframes (for the currently
visible context).

* Also added support for showing Grease Pencil keyframes in the timeline,
though this doesn't currently work because of context issues. We need to find
a way around not being able to know what other views are showing GP data
(e.g. maybe default to only showing stuff for 3D views, since that's the primary
usecase for animation-type work)?

Added back toggle in Clip Editor to set where the datablock gets attached

Put in place defines for not showing GP onionskins when animating

Added some defnies which will hide GP onionskins when animation playback is running.
These don't work yet though as there's no way to access that information from
the drawing callbacks which call the GP drawing code.

Deselecting GP strokes deselects them for all frames and all (editable) layers

Bugfix: Sequencer properties panel doesn't update when new Grease Pencil data is added

Bugfix: Sequencer Preview doesn't update when stroke selection changes

Grease Pencil layers in the DopeSheet now show interactive color swatches beside the layer name now

Updated "Frame" menu to show all the operators which work for Grease Pencil mode