1 files changed, 14 insertions, 6 deletions

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index ca971281420..7e27c11ec8a 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -7126,10 +7126,11 @@ static void headerSeqSlide(TransInfo *t, float val[2], char str[MAX_INFO_LEN])
 	                    WM_bool_as_string((t->flag & T_ALT_TRANSFORM) != 0));
 }
 
-static void applySeqSlideValue(TransInfo *t, const float val[2])
+static void applySeqSlideValue(TransInfo *t, const float val[2], int frame)
 {
 	TransData *td = t->data;
 	int i;
+	TransSeq *ts = t->customData;
 
 	for (i = 0; i < t->total; i++, td++) {
 		float tvec[2];
@@ -7144,15 +7145,21 @@ static void applySeqSlideValue(TransInfo *t, const float val[2])
 
 		mul_v2_fl(tvec, td->factor);
 
-		td->loc[0] = td->iloc[0] + tvec[0];
+		if (t->modifiers & MOD_SNAP_INVERT) {
+			td->loc[0] = frame + td->factor * (td->iloc[0] - ts->min);
+		}
+		else {
+			td->loc[0] = td->iloc[0] + tvec[0];
+		}
+
 		td->loc[1] = td->iloc[1] + tvec[1];
 	}
 }
 
-static void applySeqSlide(TransInfo *t, const int UNUSED(mval[2]))
+static void applySeqSlide(TransInfo *t, const int mval[2])
 {
 	char str[MAX_INFO_LEN];
-
+	int snap_frame = 0;
 	if (t->con.mode & CON_APPLY) {
 		float pvec[3] = {0.0f, 0.0f, 0.0f};
 		float tvec[3];
@@ -7160,7 +7167,8 @@ static void applySeqSlide(TransInfo *t, const int UNUSED(mval[2]))
 		copy_v3_v3(t->values, tvec);
 	}
 	else {
-		snapGridIncrement(t, t->values);
+		snap_frame = snapSequenceBounds(t, mval);
+		// snapGridIncrement(t, t->values);
 		applyNumInput(&t->num, t->values);
 	}
 
@@ -7168,7 +7176,7 @@ static void applySeqSlide(TransInfo *t, const int UNUSED(mval[2]))
 	t->values[1] = floor(t->values[1] + 0.5f);
 
 	headerSeqSlide(t, t->values, str);
-	applySeqSlideValue(t, t->values);
+	applySeqSlideValue(t, t->values, snap_frame);
 
 	recalcData(t);