Graph Editor: Added 2D Cursor

I've finally given in, and implemented a '2d-cursor' for the Graph Editor. This is simply represented as an additional horizontal line that meets with the current frame indicator, forming a cross-hair. It can be disabled from the View menu.

Currently, the only tool which takes this into account is the Snapping tools (Shift-S), where I've hooked up a tool I added some time ago. 

TODO:
- expose this cursor to the transform tools for scaling/rotation options...

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 72856e54bdf..b989c83fbc3 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -1241,6 +1241,17 @@ static void rna_def_space_graph(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "AutoMerge Keyframes", "Show handles of Bezier control points.");
 	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_GRAPH, NULL);
 	
+	/* cursor */
+	prop= RNA_def_property(srna, "show_cursor", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_negative_sdna(prop, NULL, "flag", SIPO_NODRAWCURSOR);
+	RNA_def_property_ui_text(prop, "Show Cursor", "Show 2D cursor.");
+	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_GRAPH, NULL);
+	
+	prop= RNA_def_property(srna, "cursor_value", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "cursorVal");
+	RNA_def_property_ui_text(prop, "Cursor Y-Value", "Graph Editor 2D-Value cursor - Y-Value component");
+	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_GRAPH, NULL);
+	
 	// TODO... autosnap, dopesheet?
 }