Patch #4995, bugfix #4985

Patch for this bug provided by Johannes Meng.
Here's his log:

When using the mouse wheel on an inverted 3d view (that is back, left or
bottom) the name display changed to front (right, top). Also when using
mouse wheel with modifier keys (strg/shift) on a normal view, it changed
the display to the inverted variant.
What I did was check the type of event that is handeled before
setting/unsetting V3D_OPP_DIRECTION_NAME. I simply added two if statements
and expanded the comment by a line explaining it a bit.

1 files changed, 9 insertions, 4 deletions

diff --git a/source/blender/src/toets.c b/source/blender/src/toets.c
index 93d38ad6b34..2b6327df80c 100644
--- a/source/blender/src/toets.c
+++ b/source/blender/src/toets.c
@@ -139,8 +139,10 @@ void persptoetsen(unsigned short event)
 	}
 	else if((G.qual & (LR_SHIFTKEY | LR_CTRLKEY)) && (event != PAD0)) {
 		
-		/* indicate that this view is inverted */
-		G.vd->flag2 |= V3D_OPP_DIRECTION_NAME;
+		/* Indicate that this view is inverted,
+		 * but only if it actually _was_ inverted (jobbe) */
+		if (event==PAD7 || event == PAD1 || event == PAD3)
+			G.vd->flag2 |= V3D_OPP_DIRECTION_NAME;
 		
 		if(event==PAD0) {
 			/* G.vd->persp= 3; */
@@ -201,8 +203,11 @@ void persptoetsen(unsigned short event)
 		}
 	}
 	else {
-		/* indicate that this view is not inverted */
-		G.vd->flag2 &= ~V3D_OPP_DIRECTION_NAME;
+		/* Indicate that this view is not inverted.
+		 * Don't do this for PADMINUS/PADPLUSKEY, though. (jobbe)*/
+		if (event != PADMINUS && event != PADPLUSKEY)
+			G.vd->flag2 &= ~V3D_OPP_DIRECTION_NAME;
+		
 
 		if(event==PAD7) {
 			G.vd->viewquat[0]= 1.0;