Cleanup: Use common utility to get direction for TIME_EXTEND

source/blender/editors/transform/transform_convert.c

@@ -819,25 +819,21 @@ void clipUVData(TransInfo *t)
  * \{ */
 
 /**
- * For modal operation: `t->center_global` may not have been set yet.
+ * Used for `TFM_TIME_EXTEND`.
  */
-void transform_convert_center_global_v2(TransInfo *t, float r_center[2])
+char transform_convert_frame_side_dir_get(TransInfo *t, float cframe)
 {
+  Scene *scene = t->scene;
+  float center[2];
   if (t->flag & T_MODAL) {
     UI_view2d_region_to_view(
-        (View2D *)t->view, t->mouse.imval[0], t->mouse.imval[1], &r_center[0], &r_center[1]);
+        (View2D *)t->view, t->mouse.imval[0], t->mouse.imval[1], &center[0], &center[1]);
   }
   else {
-    copy_v2_v2(r_center, t->center_global);
+    copy_v2_v2(center, t->center_global);
   }
-}
 
-void transform_convert_center_global_v2_int(TransInfo *t, int r_center[2])
-{
-  float center[2];
-  transform_convert_center_global_v2(t, center);
-  r_center[0] = round_fl_to_int(center[0]);
-  r_center[1] = round_fl_to_int(center[1]);
+  return (center[0] > cframe) ? 'R' : 'L';
 }
 
 /* This function tests if a point is on the "mouse" side of the cursor/frame-marking */

source/blender/editors/transform/transform_convert.h

@@ -104,8 +104,7 @@ void transform_around_single_fallback(TransInfo *t);
 bool constraints_list_needinv(TransInfo *t, ListBase *list);
 void calc_distanceCurveVerts(TransData *head, TransData *tail);
 struct TransDataCurveHandleFlags *initTransDataCurveHandles(TransData *td, struct BezTriple *bezt);
-void transform_convert_center_global_v2(TransInfo *t, float r_center[2]);
-void transform_convert_center_global_v2_int(TransInfo *t, int r_center[2]);
+char transform_convert_frame_side_dir_get(TransInfo *t, float cframe);
 bool FrameOnMouseSide(char side, float frame, float cframe);
 
 /* transform_convert_action.c */

source/blender/editors/transform/transform_convert_action.c

@@ -331,10 +331,7 @@ void createTransActionData(bContext *C, TransInfo *t)
 
   /* which side of the current frame should be allowed */
   if (t->mode == TFM_TIME_EXTEND) {
-    /* only side on which center is gets transformed */
-    float center[2];
-    transform_convert_center_global_v2(t, center);
-    t->frame_side = (center[0] > CFRA) ? 'R' : 'L';
+    t->frame_side = transform_convert_frame_side_dir_get(t, (float)CFRA);
   }
   else {
     /* normal transform - both sides of current frame are considered */

source/blender/editors/transform/transform_convert_graph.c

@@ -261,10 +261,7 @@ void createTransGraphEditData(bContext *C, TransInfo *t)
   /* which side of the current frame should be allowed */
   // XXX we still want this mode, but how to get this using standard transform too?
   if (t->mode == TFM_TIME_EXTEND) {
-    /* only side on which center is gets transformed */
-    float center[2];
-    transform_convert_center_global_v2(t, center);
-    t->frame_side = (center[0] > CFRA) ? 'R' : 'L';
+    t->frame_side = transform_convert_frame_side_dir_get(t, (float)CFRA);
   }
   else {
     /* normal transform - both sides of current frame are considered */

source/blender/editors/transform/transform_convert_nla.c

@@ -71,10 +71,7 @@ void createTransNlaData(bContext *C, TransInfo *t)
 
   /* which side of the current frame should be allowed */
   if (t->mode == TFM_TIME_EXTEND) {
-    /* only side on which center is gets transformed */
-    float center[2];
-    transform_convert_center_global_v2(t, center);
-    t->frame_side = (center[0] > CFRA) ? 'R' : 'L';
+    t->frame_side = transform_convert_frame_side_dir_get(t, (float)CFRA);
   }
   else {
     /* normal transform - both sides of current frame are considered */

source/blender/editors/transform/transform_convert_sequencer.c

@@ -31,6 +31,8 @@
 #include "BKE_report.h"
 #include "BKE_sequencer.h"
 
+#include "UI_view2d.h"
+
 #include "transform.h"
 #include "transform_convert.h"
 
@@ -541,10 +543,7 @@ void createTransSeqData(TransInfo *t)
   }
 
   tc->custom.type.free_cb = freeSeqData;
-  /* only side on which center is gets transformed */
-  int center[2];
-  transform_convert_center_global_v2_int(t, center);
-  t->frame_side = (center[0] > CFRA) ? 'R' : 'L';
+  t->frame_side = transform_convert_frame_side_dir_get(t, (float)CFRA);
 
 #ifdef XXX_DURIAN_ANIM_TX_HACK
   {
@@ -586,9 +585,12 @@ void createTransSeqData(TransInfo *t)
   SeqToTransData_Recursive(t, ed->seqbasep, td, td2d, tdsq);
   SeqTransDataBounds(t, ed->seqbasep, ts);
 
-  /* set the snap mode based on how close the mouse is at the end/start points */
-  if (abs(center[0] - ts->max) > abs(center[0] - ts->min)) {
-    ts->snap_left = true;
+  if (t->flag & T_MODAL) {
+    /* set the snap mode based on how close the mouse is at the end/start points */
+    int xmouse = (int)UI_view2d_region_to_view_x((View2D *)t->view, t->mouse.imval[0]);
+    if (abs(xmouse - ts->max) > abs(xmouse - ts->min)) {
+      ts->snap_left = true;
+    }
   }
 
 #undef XXX_DURIAN_ANIM_TX_HACK