Custom Manipulators Core Backend

This commit lands the core backend of the Custom Manipulators project onto the blender2.8 branch. It is a generic backend for managinig interactive on-screen controls that can be integrated into any 2D or 3D edito. It's also already integrated into the window-manager and editor code where needed.

NOTE: The changes here should not be visible for users at all. It's really just a back-end patch. Neither does this include any RNA or Python integration.

Of course, there's still lots of work ahead for custom manipulators, but this is a big milestone. WIP code that actually uses this backend can be found in the 'custom-manipulators' branch (previously called 'wiggly-widgets').

The work here isn't completely my own, all the initial work was done by @Antony Riakiotakis (psy-fi) and - although it has changed a lot since them - it's still the same in essence. He definitely deserves a big credit! Some changes in this patch were also done by @Campbell Barton (campbellbarton). Thank you guys!

Merge accepted by @brecht and @merwin.
Patch: https://developer.blender.org/D2232
Code documentation: https://wiki.blender.org/index.php/Dev:2.8/Source/Custom_Manipulator
Main task: https://developer.blender.org/T47343
More info: https://code.blender.org/2015/09/the-custom-manipulator-project-widget-project/

3 files changed, 6 insertions, 6 deletions

diff --git a/source/blender/makesdna/DNA_screen_types.h b/source/blender/makesdna/DNA_screen_types.h
index e208ef39719..2efb9d1f1ac 100644
--- a/source/blender/makesdna/DNA_screen_types.h
+++ b/source/blender/makesdna/DNA_screen_types.h
@@ -265,9 +265,10 @@ typedef struct ARegion {
 	ListBase ui_previews;		/* uiPreview */
 	ListBase handlers;			/* wmEventHandler */
 	ListBase panels_category;	/* Panel categories runtime */
-	
+
+	struct wmManipulatorMap *manipulator_map; /* manipulator-map of this region */
 	struct wmTimer *regiontimer; /* blend in/out */
-	
+
 	char *headerstr;			/* use this string to draw info */
 	void *regiondata;			/* XXX 2.50, need spacedata equivalent? */
 } ARegion;
diff --git a/source/blender/makesdna/DNA_userdef_types.h b/source/blender/makesdna/DNA_userdef_types.h
index 759ebbfb5cb..30d81df07ef 100644
--- a/source/blender/makesdna/DNA_userdef_types.h
+++ b/source/blender/makesdna/DNA_userdef_types.h
@@ -490,6 +490,7 @@ typedef struct UserDef {
 	short tb_leftmouse, tb_rightmouse;
 	struct SolidLight light[3];
 	short tw_hotspot, tw_flag, tw_handlesize, tw_size;
+	short manipulator_scale, pad3[3];
 	short textimeout, texcollectrate;
 	short wmdrawmethod; /* removed wmpad */
 	short dragthreshold;
@@ -782,8 +783,6 @@ typedef enum eText_Draw_Options {
 	USER_TEXT_DISABLE_AA	= (1 << 0),
 } eText_Draw_Options;
 
-/* tw_flag (transform widget) */
-
 /* gp_settings (Grease Pencil Settings) */
 typedef enum eGP_UserdefSettings {
 	GP_PAINT_DOSMOOTH		= (1 << 0),
diff --git a/source/blender/makesdna/DNA_view3d_types.h b/source/blender/makesdna/DNA_view3d_types.h
index a2b470e062b..e2d156ee3ca 100644
--- a/source/blender/makesdna/DNA_view3d_types.h
+++ b/source/blender/makesdna/DNA_view3d_types.h
@@ -111,7 +111,7 @@ typedef struct RegionView3D {
 	struct wmTimer *smooth_timer;
 
 
-	/* transform widget matrix */
+	/* transform manipulator matrix */
 	float twmat[4][4];
 
 	float viewquat[4];			/* view rotation, must be kept normalized */
@@ -202,7 +202,7 @@ typedef struct View3D {
 	short gridsubdiv;	/* Number of subdivisions in the grid between each highlighted grid line */
 	char gridflag;
 
-	/* transform widget info */
+	/* transform manipulator info */
 	char twtype, twmode, twflag;
 	
 	short flag3;