Spreadsheet: Dataset region for spreadsheet editor

This patch adds a left aligned sidebar to the spreadsheet editor. This
Sidebar can be used to navigate the geometry component types and
attribute domains. It also provides a quick overview of domain sizes.
It replaces the two dropdowns in the regions header.
Next step will be to add the domain cycling shortcut
using the CTRL + mouse wheel.

Reviewer: Dalai Felinto (dfelinto), Julian Eisel (Severin),
Hans Goudey (HooglyBoogly).

Differential Revision: https://developer.blender.org/D11046

2 files changed, 23 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index ad1b52bdfd7..17062b399cd 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -776,6 +776,20 @@ static void rna_Space_show_region_toolbar_update(bContext *C, PointerRNA *ptr)
   rna_Space_bool_from_region_flag_update_by_type(C, ptr, RGN_TYPE_TOOLS, RGN_FLAG_HIDDEN);
 }
 
+/* Channels Region. */
+static bool rna_Space_show_region_channels_get(PointerRNA *ptr)
+{
+  return !rna_Space_bool_from_region_flag_get_by_type(ptr, RGN_TYPE_CHANNELS, RGN_FLAG_HIDDEN);
+}
+static void rna_Space_show_region_channels_set(PointerRNA *ptr, bool value)
+{
+  rna_Space_bool_from_region_flag_set_by_type(ptr, RGN_TYPE_CHANNELS, RGN_FLAG_HIDDEN, !value);
+}
+static void rna_Space_show_region_channels_update(bContext *C, PointerRNA *ptr)
+{
+  rna_Space_bool_from_region_flag_update_by_type(C, ptr, RGN_TYPE_CHANNELS, RGN_FLAG_HIDDEN);
+}
+
 /* UI Region */
 static bool rna_Space_show_region_ui_get(PointerRNA *ptr)
 {
@@ -3214,6 +3228,10 @@ static void rna_def_space_generic_show_region_toggles(StructRNA *srna, int regio
     region_type_mask &= ~(1 << RGN_TYPE_TOOLS);
     DEF_SHOW_REGION_PROPERTY(show_region_toolbar, "Toolbar", "");
   }
+  if (region_type_mask & (1 << RGN_TYPE_CHANNELS)) {
+    region_type_mask &= ~(1 << RGN_TYPE_CHANNELS);
+    DEF_SHOW_REGION_PROPERTY(show_region_channels, "Channels", "");
+  }
   if (region_type_mask & (1 << RGN_TYPE_UI)) {
     region_type_mask &= ~(1 << RGN_TYPE_UI);
     DEF_SHOW_REGION_PROPERTY(show_region_ui, "Sidebar", "");
@@ -7560,6 +7578,9 @@ static void rna_def_space_spreadsheet_context(BlenderRNA *brna)
   RNA_def_property_enum_items(prop, spreadsheet_context_type_items);
   RNA_def_property_ui_text(prop, "Type", "Type of the context");
   RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+
+  rna_def_space_generic_show_region_toggles(srna,
+                                            (1 << RGN_TYPE_CHANNELS) | (1 << RGN_TYPE_FOOTER));
 }
 
 static void rna_def_space_spreadsheet_context_object(BlenderRNA *brna)
@@ -7674,7 +7695,7 @@ static void rna_def_space_spreadsheet(BlenderRNA *brna)
   srna = RNA_def_struct(brna, "SpaceSpreadsheet", "Space");
   RNA_def_struct_ui_text(srna, "Space Spreadsheet", "Spreadsheet space data");
 
-  rna_def_space_generic_show_region_toggles(srna, (1 << RGN_TYPE_UI) | (1 << RGN_TYPE_FOOTER));
+  rna_def_space_generic_show_region_toggles(srna, (1 << RGN_TYPE_UI) | (1 << RGN_TYPE_CHANNELS) | (1 << RGN_TYPE_FOOTER) );
 
   prop = RNA_def_property(srna, "is_pinned", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "flag", SPREADSHEET_FLAG_PINNED);
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 70c57119e2d..92d8b299099 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -3864,6 +3864,7 @@ static void rna_def_userdef_theme_space_spreadsheet(BlenderRNA *brna)
   RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
 
   rna_def_userdef_theme_spaces_main(srna);
+  rna_def_userdef_theme_spaces_list_main(srna);
 }
 
 static void rna_def_userdef_themes(BlenderRNA *brna)