Sequencer: 2D cursor for the preview & transform

- Use 2D cursor in the preview space using shortcuts
  matching the UV editor and 3D view.
- Add Cursor tool, cursor transform.
- Support for cursor and bound-box pivot.
- Add pivot pie menu.

2 files changed, 19 insertions, 0 deletions

diff --git a/source/blender/sequencer/SEQ_transform.h b/source/blender/sequencer/SEQ_transform.h
index 328efb9424a..69db21d4c63 100644
--- a/source/blender/sequencer/SEQ_transform.h
+++ b/source/blender/sequencer/SEQ_transform.h
@@ -70,6 +70,13 @@ void SEQ_image_transform_final_quad_get(const struct Scene *scene,
                                         const struct Sequence *seq,
                                         float r_quad[4][2]);
 
+void SEQ_image_preview_unit_to_px(const struct Scene *scene,
+                                  const float co_src[2],
+                                  float co_dst[2]);
+void SEQ_image_preview_unit_from_px(const struct Scene *scene,
+                                    const float co_src[2],
+                                    float co_dst[2]);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/sequencer/intern/strip_transform.c b/source/blender/sequencer/intern/strip_transform.c
index 8c214f66b96..f014c7a312a 100644
--- a/source/blender/sequencer/intern/strip_transform.c
+++ b/source/blender/sequencer/intern/strip_transform.c
@@ -520,3 +520,15 @@ void SEQ_image_transform_final_quad_get(const Scene *scene,
   mul_v2_v2(r_quad[2], mirror);
   mul_v2_v2(r_quad[3], mirror);
 }
+
+void SEQ_image_preview_unit_to_px(const Scene *scene, const float co_src[2], float co_dst[2])
+{
+  co_dst[0] = co_src[0] * scene->r.xsch;
+  co_dst[1] = co_src[1] * scene->r.ysch;
+}
+
+void SEQ_image_preview_unit_from_px(const Scene *scene, const float co_src[2], float co_dst[2])
+{
+  co_dst[0] = co_src[0] / scene->r.xsch;
+  co_dst[1] = co_src[1] / scene->r.ysch;
+}