== Action Editor - Group Colours for Channels ==

It is now possible for Action Channels to be displayed using the colour of its group. The colour for an Action Group is only set when it is auto-created by keyframing (controls to tweak this may/may-not be added, time permitting). 

To enable the display of these colours, the View -> 'Use Group Colors' must be enabled. However, this is disabled by default.

source/blender/makesdna/DNA_action_types.h

@@ -233,7 +233,9 @@ typedef enum SACTION_FLAG {
 		/* don't include keyframes that are out of view */
 	SACTION_HORIZOPTIMISEON = (1<<5),
 		/* hack for moving pose-markers (temp flag)  */
-	SACTION_POSEMARKERS_MOVE = (1<<6)
+	SACTION_POSEMARKERS_MOVE = (1<<6),
+		/* draw action channels using group colours (where applicable) */
+	SACTION_DRAWGCOLORS = (1<<7)
 } SACTION_FLAG;	
 
 /* SpaceAction AutoSnap Settings (also used by SpaceNLA) */

source/blender/src/drawaction.c

@@ -462,6 +462,7 @@ static void draw_channel_names(void)
 		if ( IN_RANGE(yminc, G.v2d->cur.ymin, G.v2d->cur.ymax) ||
 			 IN_RANGE(ymaxc, G.v2d->cur.ymin, G.v2d->cur.ymax) ) 
 		{
+			bActionGroup *grp = NULL;
 			short indent= 0, offset= 0, sel= 0, group=0;
 			int expand= -1, protect = -1, special= -1, mute = -1;
 			char name[32];
@@ -495,6 +496,8 @@ static void draw_channel_names(void)
 					bActionChannel *achan= (bActionChannel *)ale->data;
 					
 					group= (ale->grp) ? 1 : 0;
+					grp= ale->grp;
+					
 					indent = 0;
 					special = -1;
 					
@@ -524,7 +527,9 @@ static void draw_channel_names(void)
 					bConstraintChannel *conchan = (bConstraintChannel *)ale->data;
 					
 					indent = 2;
+					
 					group= (ale->grp) ? 1 : 0;
+					grp= ale->grp;
 					
 					if (EDITABLE_CONCHAN(conchan))
 						protect = ICON_UNLOCKED;
@@ -548,7 +553,9 @@ static void draw_channel_names(void)
 					
 					indent = 2;
 					protect = -1; // for now, until this can be supported by others
+					
 					group= (ale->grp) ? 1 : 0;
+					grp= ale->grp;
 					
 					if (icu->flag & IPO_MUTE)
 						mute = ICON_MUTE_IPO_ON;
@@ -581,7 +588,9 @@ static void draw_channel_names(void)
 					
 					indent = 1;
 					special = geticon_ipo_blocktype(achan->ipo->blocktype);
+					
 					group= (ale->grp) ? 1 : 0;
+					grp= ale->grp;
 					
 					if (FILTER_IPO_ACHAN(achan))	
 						expand = ICON_TRIA_DOWN;
@@ -598,7 +607,9 @@ static void draw_channel_names(void)
 					
 					indent = 1;
 					special = ICON_CONSTRAINT;
+					
 					group= (ale->grp) ? 1 : 0;
+					grp= ale->grp;
 					
 					if (FILTER_CON_ACHAN(achan))	
 						expand = ICON_TRIA_DOWN;
@@ -625,8 +636,28 @@ static void draw_channel_names(void)
 				offset = 0;
 			}
 			else {
-				/* for normal channels */
+				/* for normal channels 
+				 *	- use 3 shades of color group/standard colour for 3 indention level
+				 *	- use standard colour if enabled
+				 */
+				if ((G.saction->flag & SACTION_DRAWGCOLORS) && (grp)) {
+					char cp[3];
+					
+					if (indent == 2) {
+						VECCOPY(cp, grp->cs.solid);
+					}
+					else if (indent == 1) {
+						VECCOPY(cp, grp->cs.select);
+					}
+					else {
+						VECCOPY(cp, grp->cs.active);
+					}
+					
+					glColor3ub(cp[0], cp[1], cp[2]);
+				}
+				else
 					BIF_ThemeColorShade(TH_HEADER, ((indent==0)?20: (indent==1)?-20: -40));
+				
 				indent += group;
 				offset = 7 * indent;
 				glRectf(x+offset,  yminc, (float)NAMEWIDTH, ymaxc);

source/blender/src/editaction.c

@@ -1150,8 +1150,38 @@ void verify_pchan2achan_grouping (bAction *act, bPose *pose, char name[])
 			grp= MEM_callocN(sizeof(bActionGroup), "bActionGroup");
 			
 			grp->flag |= (AGRP_ACTIVE|AGRP_SELECTED|AGRP_EXPANDED);
+			
+			/* copy name */
 			sprintf(grp->name, agrp->name);
 			
+			/* deal with group-color copying */
+			if (agrp->customCol) {
+				if (agrp->customCol > 0) {
+					/* copy theme colors on-to group's custom color in case user tries to edit color */
+					bTheme *btheme= U.themes.first;
+					ThemeWireColor *col_set= &btheme->tarm[(agrp->customCol - 1)];
+					
+					memcpy(&grp->cs, col_set, sizeof(ThemeWireColor));
+				}
+				else {
+					/* init custom colours with a generic multi-colour rgb set, if not initialised already */
+					if (agrp->cs.solid[0] == 0) {
+						/* define for setting colors in theme below */
+						#define SETCOL(col, r, g, b, a)  col[0]=r; col[1]=g; col[2]= b; col[3]= a;
+						
+						SETCOL(grp->cs.solid, 0xff, 0x00, 0x00, 255);
+						SETCOL(grp->cs.select, 0x81, 0xe6, 0x14, 255);
+						SETCOL(grp->cs.active, 0x18, 0xb6, 0xe0, 255);
+						
+						#undef SETCOL
+					}
+					else {
+						/* just copy color set specified */
+						memcpy(&grp->cs, &agrp->cs, sizeof(ThemeWireColor));
+					}
+				}
+			}
+			
 			BLI_addtail(&act->groups, grp);
 		}
 		

source/blender/src/header_action.c

@@ -97,7 +97,8 @@ enum {
 	ACTMENU_VIEW_TIME,
 	ACTMENU_VIEW_NOHIDE,
 	ACTMENU_VIEW_TRANSDELDUPS,
-	ACTMENU_VIEW_HORIZOPTIMISE
+	ACTMENU_VIEW_HORIZOPTIMISE,
+	ACTMENU_VIEW_GCOLORS
 };
 
 enum {
@@ -347,6 +348,9 @@ static void do_action_viewmenu(void *arg, int event)
 		case ACTMENU_VIEW_HORIZOPTIMISE: /* Include keyframes not in view (horizontally) when preparing to draw */
 			G.saction->flag ^= SACTION_HORIZOPTIMISEON;
 			break;
+		case ACTMENU_VIEW_GCOLORS: /* Draw grouped-action channels using its group's color */
+			G.saction->flag ^= SACTION_DRAWGCOLORS;
+			break;
 	}
 	allqueue(REDRAWVIEW3D, 0);
 }
@@ -393,6 +397,11 @@ static uiBlock *action_viewmenu(void *arg_unused)
 					 menuwidth, 19, NULL, 0.0, 0.0, 1, 
 					 ACTMENU_VIEW_NOHIDE, "");
 					 
+	uiDefIconTextBut(block, BUTM, 1, (G.saction->flag & SACTION_DRAWGCOLORS)?ICON_CHECKBOX_HLT:ICON_CHECKBOX_DEHLT, 
+					 "Use Group Colors|", 0, yco-=20, 
+					 menuwidth, 19, NULL, 0.0, 0.0, 1, 
+					 ACTMENU_VIEW_GCOLORS, "");
+					 
 		// this option may get removed in future
 	uiDefIconTextBut(block, BUTM, 1, (G.saction->flag & SACTION_HORIZOPTIMISEON)?ICON_CHECKBOX_HLT:ICON_CHECKBOX_DEHLT, 
 					 "Cull Out-of-View Keys (Time)|", 0, yco-=20,