Blender Git Loki

Fix outliner showing objects in collections instances.

It didn't do this before for groups, and while it could be useful this leads
to terrible performance when there are many instances.

Outliner: optimize lookup of unused tree elements.

UI: support for a popup panel which stays open

UI: Move UI_paneltype_draw into layout code

No functional changes, needed for persistent popovers.

Fix T55165: Driving camera lens with property behaves unexpectedly

Differential Revision: https://developer.blender.org/D3438

Keymap: place cursor on press

Needed for tablet users.

Cleanup/simplification for BKE_modifier_get_evaluated_mesh_from_object

* Added BKE_object_get_evaluated_mesh, which can also be used outside of
Modifier context.
* BKE_modifier_get_evaluated_mesh_from_object is now a dummy wrapper
around BKE_object_get_evaluated_mesh, we do not need anything special
anymore for RENDER quality option, since this is supposed to be handled
at depsgraph level... Maybe we can get rid of it at some point, but kind
of like the idea of keeping it for now, sounds more consitent.

Cleanup: Remove unused flag GP_STROKE_RECALC_COLOR

This flag was used when the color name was the link to the palette color, but now with materials this flag is not required.

Create a loop weight map for limiting hair to the scalp regions used.

Cleanup: do not make functions for the pleasure of having functions...

Cleanup: minor details in BKE paint code related to palettes.

* Always use BKE_id_new, unless you have a very good reason to use
lower-level code!
* Prefer to pass actual ID user pointer to functions like id_us_plus & co,
rather than 'floating' ID pointer, when possible. It makes it more clear
who is the user we increase count for!

Fix T55183, fix T55174: crashes with workspace / view layer relation.

Don't store pointers to ViewLayer in the workspace, only names. Add specific
relation type since the generic mechanism makes the code hard to follow.
Integrate with pointer restore for undo and library remapping code to avoid
data going out of sync.

Also add relation automatically if there doesn't exists one yet in
BKE_workspace_view_layer_get, because in general it's really hard to ensure
it will exist when making arbitrary scene changes.

Differential Revision: https://developer.blender.org/D3432

Merge branch 'master' into blender2.8

WM: check modal handlers for keymap lookups

Keep in sync with 2.8x

UI: fix assert

Replace hard-coded button size check with UI_UNIT_X.

Caused icon-only buttons to have strings assigned based on UI-scale.

Merge branch 'blender2.8' into greasepencil-object

Fix 3D Cursor w/ interface scale

Merge branch 'master' into blender2.8

3D View: add pixelsize function w/o UI scale

Cleanup: style