1 files changed, 14 insertions, 14 deletions

diff --git a/source/blender/editors/interface/view2d_ops.c b/source/blender/editors/interface/view2d_ops.c
index 8be2667a015..12e04d392b4 100644
--- a/source/blender/editors/interface/view2d_ops.c
+++ b/source/blender/editors/interface/view2d_ops.c
@@ -827,6 +827,11 @@ static void view_zoomdrag_apply(bContext *C, wmOperator *op)
 	dx = RNA_float_get(op->ptr, "deltax");
 	dy = RNA_float_get(op->ptr, "deltay");
 
+	if (U.uiflag & USER_ZOOM_INVERT) {
+		dx *= -1;
+		dy *= -1;
+	}
+	
 	/* continuous zoom shouldn't move that fast... */
 	if (U.viewzoom == USER_ZOOM_CONT) { // XXX store this setting as RNA prop?
 		double time = PIL_check_seconds_timer();
@@ -849,12 +854,12 @@ static void view_zoomdrag_apply(bContext *C, wmOperator *op)
 				float mval_faci = 1.0f - mval_fac;
 				float ofs = (mval_fac * dx) - (mval_faci * dx);
 				
-				v2d->cur.xmin -= ofs + dx;
-				v2d->cur.xmax -= ofs - dx;
+				v2d->cur.xmin += ofs + dx;
+				v2d->cur.xmax += ofs - dx;
 			}
 			else {
-				v2d->cur.xmin -= dx;
-				v2d->cur.xmax += dx;
+				v2d->cur.xmin += dx;
+				v2d->cur.xmax -= dx;
 			}
 		}
 	}
@@ -868,12 +873,12 @@ static void view_zoomdrag_apply(bContext *C, wmOperator *op)
 				float mval_faci = 1.0f - mval_fac;
 				float ofs = (mval_fac * dy) - (mval_faci * dy);
 				
-				v2d->cur.ymin -= ofs + dy;
-				v2d->cur.ymax -= ofs - dy;
+				v2d->cur.ymin += ofs + dy;
+				v2d->cur.ymax += ofs - dy;
 			}
 			else {
-				v2d->cur.ymin -= dy;
-				v2d->cur.ymax += dy;
+				v2d->cur.ymin += dy;
+				v2d->cur.ymax -= dy;
 			}
 		}
 	}
@@ -941,7 +946,7 @@ static int view_zoomdrag_invoke(bContext *C, wmOperator *op, wmEvent *event)
 		/* As we have only 1D information (magnify value), feed both axes
 		 * with magnify information that is stored in x axis 
 		 */
-		fac = 0.01f * (event->prevx - event->x);
+		fac = 0.01f * (event->x - event->prevx);
 		dx = fac * BLI_rctf_size_x(&v2d->cur) / 10.0f;
 		dy = fac * BLI_rctf_size_y(&v2d->cur) / 10.0f;
 
@@ -1044,11 +1049,6 @@ static int view_zoomdrag_modal(bContext *C, wmOperator *op, wmEvent *event)
 		}
 		
 		/* set transform amount, and add current deltas to stored total delta (for redo) */
-		if (U.uiflag & USER_ZOOM_INVERT) {
-			dx *= -1;
-			dy *= -1;
-		}
-
 		RNA_float_set(op->ptr, "deltax", dx);
 		RNA_float_set(op->ptr, "deltay", dy);