Camera tracking: initial commit of dopesheet view for clip editor

- Displays dopesheet information for selected tracks, and currently does not
  support any kind of editing.
- Changed regions to use the whole main region for such views as curves and dopesheet.
  This allows to have own panels with tools/properties in this area.
- Active clip is getting synchronized between different clip editor editors in the
  same screen, so updating of curve/dopesheet views happens automatically when one
  changes current clip in one of this editors.
- Panels in toolbox and properties panels are now separated to rely on current view
  mode, but some operators and poll functions still need to be updated.
- Added new screen called "Movie Tracking" where layout is configured to
  display timeline, main clip window, curves and dopesheet.

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/editors/space_clip/clip_buttons.c b/source/blender/editors/space_clip/clip_buttons.c
index 82178e47ae5..df6d713d82d 100644
--- a/source/blender/editors/space_clip/clip_buttons.c
+++ b/source/blender/editors/space_clip/clip_buttons.c
@@ -63,9 +63,11 @@
 
 /* Panels */
 
-static int clip_grease_pencil_panel_poll(const bContext *UNUSED(C), PanelType *UNUSED(pt))
+static int clip_grease_pencil_panel_poll(const bContext *C, PanelType *UNUSED(pt))
 {
-	return TRUE;
+	SpaceClip *sc = CTX_wm_space_clip(C);
+
+	return sc->view == SC_VIEW_CLIP;
 }
 
 void ED_clip_buttons_register(ARegionType *art)