Adding some simple but very convenient selection

functionality for the UV editor:

* A "Select->Pinned UVs" command (Shift P) that
selects all the visible pinned UVs
* A "Select->Border Select Pinned" tool (Shift B) that
works just like the normal border select tool, but only acts on pinned UVs

This is really useful when using LSCM, I only want to
touch the pinned UVs and then recalculate.

source/blender/include/BIF_editsima.h

@@ -49,7 +49,7 @@ int minmax_tface_uv(float *min, float *max);
 void transform_width_height_tface_uv(int *width, int *height);
 void transform_aspect_ratio_tface_uv(float *aspx, float *aspy);
 
-void borderselect_sima(void);
+void borderselect_sima(short whichuvs);
 void mouseco_to_curtile(void);
 void mouse_select_sima(void);
 void select_swap_tface_uv(void);
@@ -65,4 +65,7 @@ void pin_tface_uv(int mode);
 void weld_align_menu_tface_uv(void);
 void weld_align_tface_uv(char tool);
 void be_square_tface_uv(struct Mesh *me);
+void select_pinned_tface_uv(void);
 
+#define UV_SELECT_ALL		1
+#define UV_SELECT_PINNED	2

source/blender/src/editsima.c

@@ -744,7 +744,7 @@ void mouse_select_sima(void)
 	rightmouse_transform();
 }
 
-void borderselect_sima(void)
+void borderselect_sima(short whichuvs)
 {
 	Mesh *me;
 	TFace *tface;
@@ -772,21 +772,47 @@ void borderselect_sima(void)
 		
 			if(tface->flag & TF_SELECT) {
 				
-				if(BLI_in_rctf(&rectf, (float)tface->uv[0][0], (float)tface->uv[0][1])) {
+				if (whichuvs == UV_SELECT_ALL) {
-					if(val==LEFTMOUSE) tface->flag |= TF_SEL1;
+				
-					else tface->flag &= ~TF_SEL1;
+					if(BLI_in_rctf(&rectf, (float)tface->uv[0][0], (float)tface->uv[0][1])) {
-				}
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL1;
-				if(BLI_in_rctf(&rectf, (float)tface->uv[1][0], (float)tface->uv[1][1])) {
+						else tface->flag &= ~TF_SEL1;
-					if(val==LEFTMOUSE) tface->flag |= TF_SEL2;
+					}
-					else tface->flag &= ~TF_SEL2;
+					if(BLI_in_rctf(&rectf, (float)tface->uv[1][0], (float)tface->uv[1][1])) {
-				}
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL2;
-				if(BLI_in_rctf(&rectf, (float)tface->uv[2][0], (float)tface->uv[2][1])) {
+						else tface->flag &= ~TF_SEL2;
-					if(val==LEFTMOUSE) tface->flag |= TF_SEL3;
+					}
-					else tface->flag &= ~TF_SEL3;
+					if(BLI_in_rctf(&rectf, (float)tface->uv[2][0], (float)tface->uv[2][1])) {
-				}
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL3;
-				if(mface->v4 && BLI_in_rctf(&rectf, (float)tface->uv[3][0], (float)tface->uv[3][1])) {
+						else tface->flag &= ~TF_SEL3;
-					if(val==LEFTMOUSE) tface->flag |= TF_SEL4;
+					}
-					else tface->flag &= ~TF_SEL4;
+					if(mface->v4 && BLI_in_rctf(&rectf, (float)tface->uv[3][0], (float)tface->uv[3][1])) {
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL4;
+						else tface->flag &= ~TF_SEL4;
+					}
+				} else if (whichuvs == UV_SELECT_PINNED) {
+					if ((tface->unwrap & TF_PIN1) && 
+						BLI_in_rctf(&rectf, (float)tface->uv[0][0], (float)tface->uv[0][1])) {
+						
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL1;
+						else tface->flag &= ~TF_SEL1;
+					}
+					if ((tface->unwrap & TF_PIN2) && 
+						BLI_in_rctf(&rectf, (float)tface->uv[1][0], (float)tface->uv[1][1])) {
+						
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL2;
+						else tface->flag &= ~TF_SEL2;
+					}
+					if ((tface->unwrap & TF_PIN3) && 
+						BLI_in_rctf(&rectf, (float)tface->uv[2][0], (float)tface->uv[2][1])) {
+						
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL3;
+						else tface->flag &= ~TF_SEL3;
+					}
+					if ((mface->v4) && (tface->unwrap & TF_PIN4) && BLI_in_rctf(&rectf, (float)tface->uv[3][0], (float)tface->uv[3][1])) {
+						if(val==LEFTMOUSE) tface->flag |= TF_SEL4;
+						else tface->flag &= ~TF_SEL4;
+					}
 				}
 			}
 							
@@ -1352,6 +1378,35 @@ void pin_tface_uv(int mode)
 	scrarea_queue_winredraw(curarea);
 }
 
+void select_pinned_tface_uv(void)
+{
+	Mesh *me;
+	TFace *tface;
+	MFace *mface;
+	int a;
+	
+	if( is_uv_tface_editing_allowed()==0 ) return;
+	me= get_mesh(OBACT);
+	
+	mface= me->mface;
+	tface= me->tface;
+	for(a=me->totface; a>0; a--, tface++, mface++) {
+		if(tface->flag & TF_SELECT) {
+		
+			if (tface->unwrap & TF_PIN1) tface->flag |= TF_SEL1;
+			if (tface->unwrap & TF_PIN2) tface->flag |= TF_SEL2;
+			if (tface->unwrap & TF_PIN3) tface->flag |= TF_SEL3;
+			if(mface->v4) {
+				if (tface->unwrap & TF_PIN4) tface->flag |= TF_SEL4;
+			}
+			
+		}
+	}
+	
+	BIF_undo_push("Select Pinned UVs");
+	scrarea_queue_winredraw(curarea);
+}
+
 int minmax_tface_uv(float *min, float *max)
 {
 	Mesh *me;

source/blender/src/header_image.c

@@ -503,7 +503,10 @@ static void do_image_selectmenu(void *arg, int event)
 	switch(event)
 	{
 	case 0: /* Border Select */
-		borderselect_sima();
+		borderselect_sima(UV_SELECT_ALL);
+		break;
+	case 8: /* Border Select Pinned */
+		borderselect_sima(UV_SELECT_PINNED);
 		break;
 	case 1: /* Select/Deselect All */
 		select_swap_tface_uv();
@@ -511,7 +514,7 @@ static void do_image_selectmenu(void *arg, int event)
 	case 2: /* Unlink Selection */
 		unlink_selection();
 		break;
-	case 3: /* Select Linked UVs */
+	case 3: /* Linked UVs */
 		select_linked_tface_uv(2);
 		break;
 	case 4: /* Toggle Local UVs Stick to Vertex in Mesh */
@@ -539,6 +542,9 @@ static void do_image_selectmenu(void *arg, int event)
 			G.sima->flag |= SI_SELACTFACE;
 		allqueue(REDRAWIMAGE, 0);
 		break;
+	case 7: /* Pinned UVs */
+		select_pinned_tface_uv();
+		break;
 	}
 }
 
@@ -564,12 +570,18 @@ static uiBlock *image_selectmenu(void *arg_unused)
 	uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
 
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Border Select|B", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 0, "");
+	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Border Select Pinned|Shift B", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 8, "");
+
+	uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");	
 
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Select/Deselect All|A", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 1, "");
 
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Unlink Selection|Alt L", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 2, "");
 	
-	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Select Linked UVs|Ctrl L", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 3, "");
+	uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");	
+
+	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Pinned UVs|Shift P", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 7, "");
+	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Linked UVs|Ctrl L", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 3, "");
 
 	if(curarea->headertype==HEADERTOP) {
 		uiBlockSetDirection(block, UI_DOWN);

source/blender/src/space.c

@@ -3796,8 +3796,10 @@ static void winqreadimagespace(ScrArea *sa, void *spacedata, BWinEvent *evt)
 					select_swap_tface_uv();
 				break;
 			case BKEY:
-				if((G.qual==0))
+				if(G.qual==LR_SHIFTKEY)
-					borderselect_sima();
+					borderselect_sima(UV_SELECT_PINNED);
+				else if((G.qual==0))
+					borderselect_sima(UV_SELECT_ALL);
 				break;
 			case CKEY:
 				if(G.qual==LR_CTRLKEY)
@@ -3855,7 +3857,9 @@ static void winqreadimagespace(ScrArea *sa, void *spacedata, BWinEvent *evt)
 				}
 				break;
 			case PKEY:
-				if(G.qual==LR_ALTKEY)
+				if(G.qual==LR_SHIFTKEY)
+					select_pinned_tface_uv();
+				else if(G.qual==LR_ALTKEY)
 					pin_tface_uv(0);
 				else
 					pin_tface_uv(1);