Blender Git Loki

Cleanup: rename specials -> context_menu

In keeping with convention to match code & UI naming.

- No user visible changes.
- Include 'menu' in the name since context is an overloaded term.
- While a few of these are panels, from a user perspective they are
still context menus.

Tools: Only show cursor tool in wpaint mode when a pose object exists

UI: Restore orient/pivot UI for wpaint & pose mode

This was removed since 2.7x (by accident?)

GPU: Avoid access violation while reading the `pass->shader`.

Fix overlay pose panel context check

Displayed pose options when weight-paint armature wasn't in pose mode.

Context: add pose_object

Needed for UI scripts to detect mixed weight paint + pose mode.

UI: Remove Sculpt Direction from context menu

It didn't work well in here - the menu would close and re-spawn as you hovered over this control.

Fix wrong memory handling in own rB93633efe69ca.

`BLO_library_read_struct()` actually takes care for us of nearly
everything, makes things much simpler...

UI: Remove incorrect usage of ellipses in menus

We only use ellipses when a popup appears, not for regular submenus.

Icons: Add Links Cut icon to Node Editor, plus other tweaks

- Tweaks to Paint Mode Fill and Sample tool icons
- Tweaks to GP Add Primitive icons

UI: correct context menu edge selection check

Cleanup: style

Cleanup: trailing space

UI: correct typo

Also odd parenthesis.

Add WorkSpace to list of ID types that are not supported by standard copy mechanism for now.

Am not sure whether we want to support that at some point, but at least
if we don?t, make it safe and get out of copy code early, previously
trying to duplicate workspace through BKE_id_copy() would have given a
very bad a broken result...

GPencil: Add support to display the material name in selected strokes

2D artists have requested a way to see in viewport the name of the material assigned to a stroke. This is a special request for 2D animation and required to manage complex drawings with multiple materials on it. We don't need add a separate option for this in the panel.

Now, when enable Name option in the Viewport Display panel, when you select a stroke in edit mode, the name of the material is displayed near the first point selected.

Design reviewed by @mendio and @pepeland

GPencil: Add visual feedback for darwing in Bound mode

As the final stroke is not visible in Bound mode, at least display the current stroke while drawing to get a visual hint of what are you doing.

UI: Add back frame operators to GPencil Draw and Sculpt mode contextual menus

Maniphest Task: T62130

GPencil: Add support for Bound Box

The bound box was not calculated for grease pencil objects.

Fix (unreported) broken ID previews reading.

Recent changes to blendfile reading adding deferred reading of actual
data broke it, we cannot use the nifty `bhead + 1` to access data
anymore, since there is no guaranty that that block hass been fully
read.

Note that there is still one case in `read_file_thumbnail()`, however
loading of blendfile preview itself seems to be working fine... Maybe
@campbellbarton can double check that point (or knows of hands whether
it is OK there)?