VSE: Snapping feedback

Address initial feedback:
 - Use checkboxes instead of radio buttons
 - Hide snapping distance control from UI
 - Tweak snapping line color - use selected strip color, 50% transparency. Similar to other editors
 - Draw 2px thick line, since strip outline is also 2px thick

Reviewed By: HooglyBoogly

Differential Revision: https://developer.blender.org/D11759

1 files changed, 9 insertions, 4 deletions

diff --git a/source/blender/editors/transform/transform_snap.c b/source/blender/editors/transform/transform_snap.c
index 9a33dc1218d..05dcc612aae 100644
--- a/source/blender/editors/transform/transform_snap.c
+++ b/source/blender/editors/transform/transform_snap.c
@@ -303,10 +303,15 @@ void drawSnapping(const struct bContext *C, TransInfo *t)
       uint pos = GPU_vertformat_attr_add(
           immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
       immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
-      immBegin(GPU_PRIM_LINES, 2);
-      immVertex2f(pos, t->tsnap.snapPoint[0], region->v2d.cur.ymin);
-      immVertex2f(pos, t->tsnap.snapPoint[0], region->v2d.cur.ymax);
-      immEnd();
+      UI_GetThemeColor3ubv(TH_SEQ_ACTIVE, col);
+      col[3] = 128;
+      immUniformColor4ubv(col);
+      float pixelx = BLI_rctf_size_x(&region->v2d.cur) / BLI_rcti_size_x(&region->v2d.mask);
+      immRectf(pos,
+               t->tsnap.snapPoint[0] - pixelx,
+               region->v2d.cur.ymax,
+               t->tsnap.snapPoint[0] + pixelx,
+               region->v2d.cur.ymin);
       immUnbindProgram();
       GPU_blend(GPU_BLEND_NONE);
     }