New Grease Pencil object for 2D animation

This commit merge the full development done in greasepencil-object branch and include mainly the following features.

- New grease pencil object.
- New drawing engine.
- New grease pencil modes Draw/Sculpt/Edit and Weight Paint.
- New brushes for grease pencil.
- New modifiers for grease pencil.
- New shaders FX.
- New material system (replace old palettes and colors).
- Split of annotations (old grease pencil) and new grease pencil object.
- UI adapted to blender 2.8.

You can get more info here:

https://code.blender.org/2017/12/drawing-2d-animation-in-blender-2-8/
https://code.blender.org/2018/07/grease-pencil-status-update/

This is the result of nearly two years of development and I want thanks firstly the other members of the grease pencil team: Daniel M. Lara, Matias Mendiola and Joshua Leung for their support, ideas and to keep working in the project all the time, without them this project had been impossible.

Also, I want thanks other Blender developers for their help, advices and to be there always to help me, and specially to Clément Foucault, Dalai Felinto, Pablo Vázquez and Campbell Barton.

1 files changed, 40 insertions, 1 deletions

diff --git a/source/blender/editors/space_buttons/space_buttons.c b/source/blender/editors/space_buttons/space_buttons.c
index 6f7a4ca971a..62115aea11d 100644
--- a/source/blender/editors/space_buttons/space_buttons.c
+++ b/source/blender/editors/space_buttons/space_buttons.c
@@ -180,6 +180,9 @@ static void buttons_main_region_layout_properties(const bContext *C, SpaceButs *
 		case BCONTEXT_MODIFIER:
 			contexts[0] = "modifier";
 			break;
+		case BCONTEXT_SHADERFX:
+			contexts[0] = "shaderfx";
+			break;
 		case BCONTEXT_CONSTRAINT:
 			contexts[0] = "constraint";
 			break;
@@ -200,8 +203,9 @@ static void buttons_main_region_layout_tool(const bContext *C, ARegion *ar)
 	const char *contexts[3] = {NULL};
 
 	const WorkSpace *workspace = CTX_wm_workspace(C);
+	const int mode = CTX_data_mode_enum(C);
+
 	if (workspace->tools_space_type == SPACE_VIEW3D) {
-		const int mode = CTX_data_mode_enum(C);
 		switch (mode) {
 			case CTX_MODE_EDIT_MESH:
 				ARRAY_SET_ITEMS(contexts, ".mesh_edit");
@@ -245,12 +249,39 @@ static void buttons_main_region_layout_tool(const bContext *C, ARegion *ar)
 			case CTX_MODE_OBJECT:
 				ARRAY_SET_ITEMS(contexts, ".objectmode");
 				break;
+			case CTX_MODE_GPENCIL_PAINT:
+				ARRAY_SET_ITEMS(contexts, ".greasepencil_paint");
+				break;
+			case CTX_MODE_GPENCIL_SCULPT:
+				ARRAY_SET_ITEMS(contexts, ".greasepencil_sculpt");
+				break;
+			case CTX_MODE_GPENCIL_WEIGHT:
+				ARRAY_SET_ITEMS(contexts, ".greasepencil_weight");
+				break;
 		}
 	}
 	else if (workspace->tools_space_type == SPACE_IMAGE) {
 		/* TODO */
 	}
 
+	/* for grease pencil we don't use tool system yet, so we need check outside
+	 * workspace->tools_space_type because this value is not available
+	 */
+	switch (mode) {
+		case CTX_MODE_GPENCIL_PAINT:
+			ARRAY_SET_ITEMS(contexts, ".greasepencil_paint");
+			break;
+		case CTX_MODE_GPENCIL_SCULPT:
+			ARRAY_SET_ITEMS(contexts, ".greasepencil_sculpt");
+			break;
+		case CTX_MODE_GPENCIL_WEIGHT:
+			ARRAY_SET_ITEMS(contexts, ".greasepencil_weight");
+			break;
+		case CTX_MODE_GPENCIL_EDIT:
+			ARRAY_SET_ITEMS(contexts, ".greasepencil_edit");
+			break;
+	}
+
 	const bool vertical = true;
 	ED_region_panels_layout_ex(C, ar, contexts, -1, vertical);
 }
@@ -495,6 +526,14 @@ static void buttons_area_listener(
 					break;
 			}
 			break;
+		case NC_GPENCIL:
+			switch(wmn->data) {
+				case ND_DATA:
+					if (ELEM(wmn->action, NA_EDITED, NA_ADDED, NA_REMOVED))
+						ED_area_tag_redraw(sa);
+					break;
+			}
+			break;
 		case NC_NODE:
 			if (wmn->action == NA_SELECTED) {
 				ED_area_tag_redraw(sa);