UI: Animation editor scrubbing area

The main reason for this change is to allow setting the
active frame with the left mouse button, while still being
able to select e.g. keyframes with the same mouse button.

The solution is to introduce a new scrubbing region with
a specialized keymap. There are a couple of related todos,
that will be handled in separate commits.
Those are listed in D4654.

This solves T63193.

Differential Revision: https://developer.blender.org/D4654

Reviewers: brecht, billreynish

1 files changed, 25 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index a9bec8262dd..011658ecbe1 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -2065,6 +2065,11 @@ static void rna_def_userdef_theme_space_graph(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Current Frame", "");
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 
+  prop = RNA_def_property(srna, "scrubbing_background", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Scrubbing Region", "");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
   prop = RNA_def_property(srna, "window_sliders", PROP_FLOAT, PROP_COLOR_GAMMA);
   RNA_def_property_float_sdna(prop, NULL, "shade1");
   RNA_def_property_array(prop, 3);
@@ -2759,6 +2764,11 @@ static void rna_def_userdef_theme_space_seq(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Current Frame", "");
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 
+  prop = RNA_def_property(srna, "scrubbing_background", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Scrubbing Region", "");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
   prop = RNA_def_property(srna, "keyframe", PROP_FLOAT, PROP_COLOR_GAMMA);
   RNA_def_property_float_sdna(prop, NULL, "vertex_select");
   RNA_def_property_array(prop, 3);
@@ -2816,6 +2826,11 @@ static void rna_def_userdef_theme_space_action(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Current Frame", "");
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 
+  prop = RNA_def_property(srna, "scrubbing_background", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Scrubbing Region", "");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
   prop = RNA_def_property(srna, "value_sliders", PROP_FLOAT, PROP_COLOR_GAMMA);
   RNA_def_property_float_sdna(prop, NULL, "face");
   RNA_def_property_array(prop, 3);
@@ -3108,6 +3123,11 @@ static void rna_def_userdef_theme_space_nla(BlenderRNA *brna)
   RNA_def_property_array(prop, 3);
   RNA_def_property_ui_text(prop, "Current Frame", "");
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
+  prop = RNA_def_property(srna, "scrubbing_background", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Scrubbing Region", "");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 }
 
 static void rna_def_userdef_theme_colorset(BlenderRNA *brna)
@@ -3215,6 +3235,11 @@ static void rna_def_userdef_theme_space_clip(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Current Frame", "");
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 
+  prop = RNA_def_property(srna, "scrubbing_background", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Scrubbing Region", "");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
   prop = RNA_def_property(srna, "strips", PROP_FLOAT, PROP_COLOR_GAMMA);
   RNA_def_property_float_sdna(prop, NULL, "strip");
   RNA_def_property_array(prop, 3);