Added MOUSEPAN (the trackpad event) to control propertional size while transform.

There's many hardcoded scrollwheel events in Blender for this, and with new proper
analog trackpad handling I'll try to find good remapping for most cases.

1 files changed, 18 insertions, 0 deletions

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 39bad76b3d7..cbd8521cc33 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -686,6 +686,9 @@ static void view_editmove(unsigned short UNUSED(event))
 #define TFM_MODAL_EDGESLIDE_UP 24
 #define TFM_MODAL_EDGESLIDE_DOWN 25
 
+/* for analog input, like trackpad */
+#define TFM_MODAL_PROPSIZE		26
+
 /* called in transform_ops.c, on each regeneration of keymaps */
 wmKeyMap *transform_modal_keymap(wmKeyConfig *keyconf)
 {
@@ -715,6 +718,7 @@ wmKeyMap *transform_modal_keymap(wmKeyConfig *keyconf)
 		{TFM_MODAL_AUTOIK_LEN_DEC, "AUTOIK_CHAIN_LEN_DOWN", 0, "Decrease Max AutoIK Chain Length", ""},
 		{TFM_MODAL_EDGESLIDE_UP, "EDGESLIDE_EDGE_NEXT", 0, "Select next Edge Slide Edge", ""},
 		{TFM_MODAL_EDGESLIDE_DOWN, "EDGESLIDE_PREV_NEXT", 0, "Select previous Edge Slide Edge", ""},
+		{TFM_MODAL_PROPSIZE, "PROPORTIONAL_SIZE", 0, "Adjust Proportional Influence", ""},
 		{0, NULL, 0, NULL, NULL}
 	};
 	
@@ -750,6 +754,7 @@ wmKeyMap *transform_modal_keymap(wmKeyConfig *keyconf)
 	WM_modalkeymap_add_item(keymap, PAGEDOWNKEY, KM_PRESS, 0, 0, TFM_MODAL_PROPSIZE_DOWN);
 	WM_modalkeymap_add_item(keymap, WHEELDOWNMOUSE, KM_PRESS, 0, 0, TFM_MODAL_PROPSIZE_UP);
 	WM_modalkeymap_add_item(keymap, WHEELUPMOUSE, KM_PRESS, 0, 0, TFM_MODAL_PROPSIZE_DOWN);
+	WM_modalkeymap_add_item(keymap, MOUSEPAN, 0, 0, 0, TFM_MODAL_PROPSIZE);
 
 	WM_modalkeymap_add_item(keymap, WHEELDOWNMOUSE, KM_PRESS, KM_ALT, 0, TFM_MODAL_EDGESLIDE_UP);
 	WM_modalkeymap_add_item(keymap, WHEELUPMOUSE, KM_PRESS, KM_ALT, 0, TFM_MODAL_EDGESLIDE_DOWN);
@@ -1024,6 +1029,19 @@ int transformEvent(TransInfo *t, wmEvent *event)
 				removeSnapPoint(t);
 				t->redraw |= TREDRAW_HARD;
 				break;
+				
+			case TFM_MODAL_PROPSIZE:
+				/* MOUSEPAN usage... */
+				if (t->flag & T_PROP_EDIT) {
+					float fac = 1.0f + 0.005f *(event->y - event->prevy);
+					t->prop_size *= fac;
+					if (t->spacetype == SPACE_VIEW3D && t->persp != RV3D_ORTHO)
+						t->prop_size = min_ff(t->prop_size, ((View3D *)t->view)->far);
+					calculatePropRatio(t);
+				}
+				t->redraw |= TREDRAW_HARD;
+				break;
+				
 			case TFM_MODAL_PROPSIZE_UP:
 				if (t->flag & T_PROP_EDIT) {
 					t->prop_size *= 1.1f;