Spreadsheet: add boilerplate code for new editor type

This adds the initial boilerplate code that is required to introduce
the new spreadsheet editor. The editor is still hidden from the ui.

It can be made visible by undoing the change in `rna_screen.c`.

This patch does not contain any business logic for the spreadsheet editor.

Differential Revision: https://developer.blender.org/D10645

Ref T86279.

21 files changed, 393 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_context.h b/source/blender/blenkernel/BKE_context.h
index 94392dd78da..3d30188e517 100644
--- a/source/blender/blenkernel/BKE_context.h
+++ b/source/blender/blenkernel/BKE_context.h
@@ -197,6 +197,7 @@ struct SpaceInfo *CTX_wm_space_info(const bContext *C);
 struct SpaceUserPref *CTX_wm_space_userpref(const bContext *C);
 struct SpaceClip *CTX_wm_space_clip(const bContext *C);
 struct SpaceTopBar *CTX_wm_space_topbar(const bContext *C);
+struct SpaceSpreadsheet *CTX_wm_space_spreadsheet(const bContext *C);
 
 void CTX_wm_manager_set(bContext *C, struct wmWindowManager *wm);
 void CTX_wm_window_set(bContext *C, struct wmWindow *win);
diff --git a/source/blender/blenkernel/intern/context.c b/source/blender/blenkernel/intern/context.c
index 6bc385ecd31..cbf7a4483c0 100644
--- a/source/blender/blenkernel/intern/context.c
+++ b/source/blender/blenkernel/intern/context.c
@@ -914,6 +914,15 @@ struct SpaceTopBar *CTX_wm_space_topbar(const bContext *C)
   return NULL;
 }
 
+struct SpaceSpreadsheet *CTX_wm_space_spreadsheet(const bContext *C)
+{
+  ScrArea *area = CTX_wm_area(C);
+  if (area && area->spacetype == SPACE_SPREADSHEET) {
+    return area->spacedata.first;
+  }
+  return NULL;
+}
+
 void CTX_wm_manager_set(bContext *C, wmWindowManager *wm)
 {
   C->wm.manager = wm;
diff --git a/source/blender/blenkernel/intern/screen.c b/source/blender/blenkernel/intern/screen.c
index 623f3a349d8..aa1a9403908 100644
--- a/source/blender/blenkernel/intern/screen.c
+++ b/source/blender/blenkernel/intern/screen.c
@@ -1342,6 +1342,9 @@ static void write_area_regions(BlendWriter *writer, ScrArea *area)
     else if (sl->spacetype == SPACE_INFO) {
       BLO_write_struct(writer, SpaceInfo, sl);
     }
+    else if (sl->spacetype == SPACE_SPREADSHEET) {
+      BLO_write_struct(writer, SpaceSpreadsheet, sl);
+    }
   }
 }
 
diff --git a/source/blender/blenloader/intern/versioning_userdef.c b/source/blender/blenloader/intern/versioning_userdef.c
index 3d39181cd32..ae22c5151cc 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -282,6 +282,8 @@ static void do_versions_theme(const UserDef *userdef, bTheme *btheme)
     FROM_DEFAULT_V4_UCHAR(space_info.info_property);
     FROM_DEFAULT_V4_UCHAR(space_info.info_error);
     FROM_DEFAULT_V4_UCHAR(space_info.info_operator);
+
+    btheme->space_spreadsheet = btheme->space_outliner;
   }
 
 #undef FROM_DEFAULT_V4_UCHAR
diff --git a/source/blender/editors/CMakeLists.txt b/source/blender/editors/CMakeLists.txt
index a2ae350ce4b..092198cea86 100644
--- a/source/blender/editors/CMakeLists.txt
+++ b/source/blender/editors/CMakeLists.txt
@@ -53,6 +53,7 @@ if(WITH_BLENDER)
   add_subdirectory(space_outliner)
   add_subdirectory(space_script)
   add_subdirectory(space_sequencer)
+  add_subdirectory(space_spreadsheet)
   add_subdirectory(space_statusbar)
   add_subdirectory(space_text)
   add_subdirectory(space_topbar)
diff --git a/source/blender/editors/include/ED_space_api.h b/source/blender/editors/include/ED_space_api.h
index fc474ea464d..1a3aa7e5496 100644
--- a/source/blender/editors/include/ED_space_api.h
+++ b/source/blender/editors/include/ED_space_api.h
@@ -55,6 +55,7 @@ void ED_spacetype_userpref(void);
 void ED_spacetype_clip(void);
 void ED_spacetype_statusbar(void);
 void ED_spacetype_topbar(void);
+void ED_spacetype_spreadsheet(void);
 
 /* calls for instancing and freeing spacetype static data
  * called in WM_init_exit */
diff --git a/source/blender/editors/interface/interface_template_search_menu.c b/source/blender/editors/interface/interface_template_search_menu.c
index e1f8f63dcbf..74668b2f3a3 100644
--- a/source/blender/editors/interface/interface_template_search_menu.c
+++ b/source/blender/editors/interface/interface_template_search_menu.c
@@ -642,6 +642,7 @@ static struct MenuSearch_Data *menu_items_from_ui_create(
           SPACE_MENU_NOP(SPACE_SCRIPT);
           SPACE_MENU_NOP(SPACE_STATUSBAR);
           SPACE_MENU_NOP(SPACE_TOPBAR);
+          SPACE_MENU_NOP(SPACE_SPREADSHEET);
         }
       }
       for (int i = 0; i < idname_array_len; i++) {
diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index 80e54f4f92f..afac254f542 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -160,6 +160,9 @@ const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
         case SPACE_STATUSBAR:
           ts = &btheme->space_statusbar;
           break;
+        case SPACE_SPREADSHEET:
+          ts = &btheme->space_spreadsheet;
+          break;
         default:
           ts = &btheme->space_view3d;
           break;
diff --git a/source/blender/editors/space_api/CMakeLists.txt b/source/blender/editors/space_api/CMakeLists.txt
index 573afb76f0e..85c07223f2d 100644
--- a/source/blender/editors/space_api/CMakeLists.txt
+++ b/source/blender/editors/space_api/CMakeLists.txt
@@ -50,6 +50,7 @@ set(LIB
   bf_editor_space_outliner
   bf_editor_space_script
   bf_editor_space_sequencer
+  bf_editor_space_spreadsheet
   bf_editor_space_statusbar
   bf_editor_space_text
   bf_editor_space_topbar
diff --git a/source/blender/editors/space_api/spacetypes.c b/source/blender/editors/space_api/spacetypes.c
index ff05fb3bad6..adb824b8934 100644
--- a/source/blender/editors/space_api/spacetypes.c
+++ b/source/blender/editors/space_api/spacetypes.c
@@ -95,6 +95,7 @@ void ED_spacetypes_init(void)
   ED_spacetype_clip();
   ED_spacetype_statusbar();
   ED_spacetype_topbar();
+  ED_spacetype_spreadsheet();
 
   /* Register operator types for screen and all spaces. */
   ED_operatortypes_userpref();
diff --git a/source/blender/editors/space_spreadsheet/CMakeLists.txt b/source/blender/editors/space_spreadsheet/CMakeLists.txt
new file mode 100644
index 00000000000..8be5f506dd7
--- /dev/null
+++ b/source/blender/editors/space_spreadsheet/CMakeLists.txt
@@ -0,0 +1,39 @@
+# ***** BEGIN GPL LICENSE BLOCK *****
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# ***** END GPL LICENSE BLOCK *****
+
+set(INC
+  ../include
+  ../../blenkernel
+  ../../blenlib
+  ../../makesdna
+  ../../makesrna
+  ../../windowmanager
+  ../../../../intern/glew-mx
+  ../../../../intern/guardedalloc
+)
+
+set(SRC
+  space_spreadsheet.cc
+  spreadsheet_ops.cc
+
+  spreadsheet_intern.hh
+)
+
+set(LIB
+)
+
+blender_add_lib(bf_editor_space_spreadsheet "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
diff --git a/source/blender/editors/space_spreadsheet/space_spreadsheet.cc b/source/blender/editors/space_spreadsheet/space_spreadsheet.cc
new file mode 100644
index 00000000000..27276b4bedc
--- /dev/null
+++ b/source/blender/editors/space_spreadsheet/space_spreadsheet.cc
@@ -0,0 +1,221 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <cstring>
+
+#include "BLI_listbase.h"
+
+#include "BKE_screen.h"
+
+#include "ED_screen.h"
+#include "ED_space_api.h"
+
+#include "DNA_scene_types.h"
+#include "DNA_screen_types.h"
+#include "DNA_space_types.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "UI_resources.h"
+#include "UI_view2d.h"
+
+#include "RNA_access.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+#include "spreadsheet_intern.hh"
+
+static SpaceLink *spreadsheet_create(const ScrArea *UNUSED(area), const Scene *UNUSED(scene))
+{
+  SpaceSpreadsheet *spreadsheet_space = (SpaceSpreadsheet *)MEM_callocN(sizeof(SpaceSpreadsheet),
+                                                                        "spreadsheet space");
+  spreadsheet_space->spacetype = SPACE_SPREADSHEET;
+
+  {
+    /* header */
+    ARegion *region = (ARegion *)MEM_callocN(sizeof(ARegion), "spreadsheet header");
+    BLI_addtail(&spreadsheet_space->regionbase, region);
+    region->regiontype = RGN_TYPE_HEADER;
+    region->alignment = (U.uiflag & USER_HEADER_BOTTOM) ? RGN_ALIGN_BOTTOM : RGN_ALIGN_TOP;
+  }
+
+  {
+    /* main window */
+    ARegion *region = (ARegion *)MEM_callocN(sizeof(ARegion), "spreadsheet main region");
+    BLI_addtail(&spreadsheet_space->regionbase, region);
+    region->regiontype = RGN_TYPE_WINDOW;
+  }
+
+  return (SpaceLink *)spreadsheet_space;
+}
+
+static void spreadsheet_free(SpaceLink *UNUSED(sl))
+{
+}
+
+static void spreadsheet_init(wmWindowManager *UNUSED(wm), ScrArea *UNUSED(area))
+{
+}
+
+static SpaceLink *spreadsheet_duplicate(SpaceLink *sl)
+{
+  return (SpaceLink *)MEM_dupallocN(sl);
+}
+
+static void spreadsheet_keymap(wmKeyConfig *UNUSED(keyconf))
+{
+}
+
+static void spreadsheet_main_region_init(wmWindowManager *wm, ARegion *region)
+{
+  region->v2d.scroll = V2D_SCROLL_RIGHT | V2D_SCROLL_BOTTOM;
+  region->v2d.align = V2D_ALIGN_NO_NEG_X | V2D_ALIGN_NO_POS_Y;
+  region->v2d.keepzoom = V2D_LOCKZOOM_X | V2D_LOCKZOOM_Y | V2D_LIMITZOOM | V2D_KEEPASPECT;
+  region->v2d.keeptot = V2D_KEEPTOT_STRICT;
+  region->v2d.minzoom = region->v2d.maxzoom = 1.0f;
+
+  UI_view2d_region_reinit(&region->v2d, V2D_COMMONVIEW_LIST, region->winx, region->winy);
+
+  wmKeyMap *keymap = WM_keymap_ensure(wm->defaultconf, "View2D Buttons List", 0, 0);
+  WM_event_add_keymap_handler(&region->handlers, keymap);
+}
+
+static void spreadsheet_main_region_draw(const bContext *UNUSED(C), ARegion *UNUSED(region))
+{
+  UI_ThemeClearColor(TH_BACK);
+}
+
+static void spreadsheet_main_region_listener(const wmRegionListenerParams *params)
+{
+  ARegion *region = params->region;
+  wmNotifier *wmn = params->notifier;
+
+  switch (wmn->category) {
+    case NC_SCENE: {
+      switch (wmn->data) {
+        case ND_MODE:
+        case ND_OB_ACTIVE: {
+          ED_region_tag_redraw(region);
+          break;
+        }
+      }
+      break;
+    }
+    case NC_OBJECT: {
+      ED_region_tag_redraw(region);
+      break;
+    }
+    case NC_SPACE: {
+      if (wmn->data == ND_SPACE_SPREADSHEET) {
+        ED_region_tag_redraw(region);
+      }
+      break;
+    }
+    case NC_GEOM: {
+      ED_region_tag_redraw(region);
+      break;
+    }
+  }
+}
+
+static void spreadsheet_header_region_init(wmWindowManager *UNUSED(wm), ARegion *region)
+{
+  ED_region_header_init(region);
+}
+
+static void spreadsheet_header_region_draw(const bContext *C, ARegion *region)
+{
+  ED_region_header(C, region);
+}
+
+static void spreadsheet_header_region_free(ARegion *UNUSED(region))
+{
+}
+
+static void spreadsheet_header_region_listener(const wmRegionListenerParams *params)
+{
+  ARegion *region = params->region;
+  wmNotifier *wmn = params->notifier;
+
+  switch (wmn->category) {
+    case NC_SCENE: {
+      switch (wmn->data) {
+        case ND_MODE:
+        case ND_OB_ACTIVE: {
+          ED_region_tag_redraw(region);
+          break;
+        }
+      }
+      break;
+    }
+    case NC_OBJECT: {
+      ED_region_tag_redraw(region);
+      break;
+    }
+    case NC_SPACE: {
+      if (wmn->data == ND_SPACE_SPREADSHEET) {
+        ED_region_tag_redraw(region);
+      }
+      break;
+    }
+    case NC_GEOM: {
+      ED_region_tag_redraw(region);
+      break;
+    }
+  }
+}
+
+void ED_spacetype_spreadsheet(void)
+{
+  SpaceType *st = (SpaceType *)MEM_callocN(sizeof(SpaceType), "spacetype spreadsheet");
+  ARegionType *art;
+
+  st->spaceid = SPACE_SPREADSHEET;
+  strncpy(st->name, "Spreadsheet", BKE_ST_MAXNAME);
+
+  st->create = spreadsheet_create;
+  st->free = spreadsheet_free;
+  st->init = spreadsheet_init;
+  st->duplicate = spreadsheet_duplicate;
+  st->operatortypes = spreadsheet_operatortypes;
+  st->keymap = spreadsheet_keymap;
+
+  /* regions: main window */
+  art = (ARegionType *)MEM_callocN(sizeof(ARegionType), "spacetype spreadsheet region");
+  art->regionid = RGN_TYPE_WINDOW;
+  art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D;
+
+  art->init = spreadsheet_main_region_init;
+  art->draw = spreadsheet_main_region_draw;
+  art->listener = spreadsheet_main_region_listener;
+  BLI_addhead(&st->regiontypes, art);
+
+  /* regions: header */
+  art = (ARegionType *)MEM_callocN(sizeof(ARegionType), "spacetype spreadsheet header region");
+  art->regionid = RGN_TYPE_HEADER;
+  art->prefsizey = HEADERY;
+  art->keymapflag = 0;
+  art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_VIEW2D | ED_KEYMAP_HEADER;
+
+  art->init = spreadsheet_header_region_init;
+  art->draw = spreadsheet_header_region_draw;
+  art->free = spreadsheet_header_region_free;
+  art->listener = spreadsheet_header_region_listener;
+  BLI_addhead(&st->regiontypes, art);
+
+  BKE_spacetype_register(st);
+}
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh b/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh
new file mode 100644
index 00000000000..10a875e2c14
--- /dev/null
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_intern.hh
@@ -0,0 +1,19 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+void spreadsheet_operatortypes(void);
diff --git a/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc b/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc
new file mode 100644
index 00000000000..770bd207e8d
--- /dev/null
+++ b/source/blender/editors/space_spreadsheet/spreadsheet_ops.cc
@@ -0,0 +1,21 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "spreadsheet_intern.hh"
+
+void spreadsheet_operatortypes()
+{
+}
diff --git a/source/blender/makesdna/DNA_space_types.h b/source/blender/makesdna/DNA_space_types.h
index 856fa569645..81fd7c45baa 100644
--- a/source/blender/makesdna/DNA_space_types.h
+++ b/source/blender/makesdna/DNA_space_types.h
@@ -1840,6 +1840,22 @@ typedef struct SpaceStatusBar {
 /** \} */
 
 /* -------------------------------------------------------------------- */
+/** \name Spreadsheet
+ * \{ */
+
+typedef struct SpaceSpreadsheet {
+  SpaceLink *next, *prev;
+  /** Storage of regions for inactive spaces. */
+  ListBase regionbase;
+  char spacetype;
+  char link_flag;
+  char _pad0[6];
+  /* End 'SpaceLink' header. */
+} SpaceSpreadsheet;
+
+/** \} */
+
+/* -------------------------------------------------------------------- */
 /** \name Space Defines (eSpace_Type)
  * \{ */
 
@@ -1876,8 +1892,9 @@ typedef enum eSpace_Type {
   SPACE_CLIP = 20,
   SPACE_TOPBAR = 21,
   SPACE_STATUSBAR = 22,
+  SPACE_SPREADSHEET = 23
 
-#define SPACE_TYPE_LAST SPACE_STATUSBAR
+#define SPACE_TYPE_LAST SPACE_SPREADSHEET
 } eSpace_Type;
 
 /* use for function args */
diff --git a/source/blender/makesdna/DNA_userdef_types.h b/source/blender/makesdna/DNA_userdef_types.h
index d304641e112..bd8f3cd95a7 100644
--- a/source/blender/makesdna/DNA_userdef_types.h
+++ b/source/blender/makesdna/DNA_userdef_types.h
@@ -492,6 +492,7 @@ typedef struct bTheme {
   ThemeSpace space_clip;
   ThemeSpace space_topbar;
   ThemeSpace space_statusbar;
+  ThemeSpace space_spreadsheet;
 
   /* 20 sets of bone colors for this theme */
   ThemeWireColor tarm[20];
@@ -507,7 +508,7 @@ typedef struct bTheme {
 #define UI_THEMESPACE_START(btheme) \
   (CHECK_TYPE_INLINE(btheme, bTheme *), &((btheme)->space_properties))
 #define UI_THEMESPACE_END(btheme) \
-  (CHECK_TYPE_INLINE(btheme, bTheme *), (&((btheme)->space_statusbar) + 1))
+  (CHECK_TYPE_INLINE(btheme, bTheme *), (&((btheme)->space_spreadsheet) + 1))
 
 typedef struct bAddon {
   struct bAddon *next, *prev;
diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h
index eecac8ca19e..74b8517f538 100644
--- a/source/blender/makesrna/RNA_access.h
+++ b/source/blender/makesrna/RNA_access.h
@@ -601,6 +601,7 @@ extern StructRNA RNA_SpaceOutliner;
 extern StructRNA RNA_SpacePreferences;
 extern StructRNA RNA_SpaceProperties;
 extern StructRNA RNA_SpaceSequenceEditor;
+extern StructRNA RNA_SpaceSpreadsheet;
 extern StructRNA RNA_SpaceTextEditor;
 extern StructRNA RNA_SpaceUVEditor;
 extern StructRNA RNA_SpaceView3D;
diff --git a/source/blender/makesrna/intern/rna_screen.c b/source/blender/makesrna/intern/rna_screen.c
index 6cf1d7a923b..58e446381ad 100644
--- a/source/blender/makesrna/intern/rna_screen.c
+++ b/source/blender/makesrna/intern/rna_screen.c
@@ -201,6 +201,10 @@ static const EnumPropertyItem *rna_Area_ui_type_itemf(bContext *C,
     if (ELEM(item_from->value, SPACE_TOPBAR, SPACE_STATUSBAR)) {
       continue;
     }
+    /* Hide spreadsheet editor until we want to expose it in the ui. */
+    if (item_from->value == SPACE_SPREADSHEET) {
+      continue;
+    }
 
     SpaceType *st = item_from->identifier[0] ? BKE_spacetype_from_id(item_from->value) : NULL;
     int totitem_prev = totitem;
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 5312aea9295..d0f366d6a18 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -145,6 +145,11 @@ const EnumPropertyItem rna_enum_space_type_items[] = {
      "Properties",
      "Edit properties of active object and related data-blocks"},
     {SPACE_FILE, "FILE_BROWSER", ICON_FILEBROWSER, "File Browser", "Browse for files and assets"},
+    {SPACE_SPREADSHEET,
+     "SPREADSHEET",
+     ICON_SPREADSHEET,
+     "Spreadsheet",
+     "Explore geometry data in a table"},
     {SPACE_USERPREF,
      "PREFERENCES",
      ICON_PREFERENCES,
@@ -571,6 +576,8 @@ static StructRNA *rna_Space_refine(struct PointerRNA *ptr)
       return &RNA_SpacePreferences;
     case SPACE_CLIP:
       return &RNA_SpaceClipEditor;
+    case SPACE_SPREADSHEET:
+      return &RNA_SpaceSpreadsheet;
 
       /* Currently no type info. */
     case SPACE_SCRIPT:
@@ -7171,6 +7178,14 @@ static void rna_def_space_clip(BlenderRNA *brna)
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_CLIP, NULL);
 }
 
+static void rna_def_space_spreadsheet(BlenderRNA *brna)
+{
+  StructRNA *srna;
+
+  srna = RNA_def_struct(brna, "SpaceSpreadsheet", "Space");
+  RNA_def_struct_ui_text(srna, "Space Spreadsheet", "Spreadsheet space data");
+}
+
 void RNA_def_space(BlenderRNA *brna)
 {
   rna_def_space(brna);
@@ -7196,6 +7211,7 @@ void RNA_def_space(BlenderRNA *brna)
   rna_def_node_tree_path(brna);
   rna_def_space_node(brna);
   rna_def_space_clip(brna);
+  rna_def_space_spreadsheet(brna);
 }
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index b06ec674e81..4097e2dddea 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -3847,6 +3847,26 @@ static void rna_def_userdef_theme_space_statusbar(BlenderRNA *brna)
   rna_def_userdef_theme_spaces_main(srna);
 }
 
+static void rna_def_userdef_theme_space_spreadsheet(BlenderRNA *brna)
+{
+  StructRNA *srna;
+  PropertyRNA *prop;
+
+  /* space_spreadsheet */
+
+  srna = RNA_def_struct(brna, "ThemeSpreadsheet", NULL);
+  RNA_def_struct_sdna(srna, "ThemeSpace");
+  RNA_def_struct_clear_flag(srna, STRUCT_UNDO);
+  RNA_def_struct_ui_text(srna, "Theme Spreadsheet", "Theme settings for the Spreadsheet");
+
+  prop = RNA_def_property(srna, "row_alternate", PROP_FLOAT, PROP_COLOR_GAMMA);
+  RNA_def_property_array(prop, 4);
+  RNA_def_property_ui_text(prop, "Alternate Rows", "Overlay color on every other row");
+  RNA_def_property_update(prop, 0, "rna_userdef_theme_update");
+
+  rna_def_userdef_theme_spaces_main(srna);
+}
+
 static void rna_def_userdef_themes(BlenderRNA *brna)
 {
   StructRNA *srna;
@@ -3873,6 +3893,7 @@ static void rna_def_userdef_themes(BlenderRNA *brna)
       {20, "CLIP_EDITOR", ICON_TRACKER, "Movie Clip Editor", ""},
       {21, "TOPBAR", ICON_TOPBAR, "Top Bar", ""},
       {22, "STATUSBAR", ICON_STATUSBAR, "Status Bar", ""},
+      {23, "SPREADSHEET", ICON_SPREADSHEET, "Spreadsheet"},
       {0, NULL, 0, NULL, NULL},
   };
 
@@ -4001,6 +4022,12 @@ static void rna_def_userdef_themes(BlenderRNA *brna)
   RNA_def_property_pointer_sdna(prop, NULL, "space_statusbar");
   RNA_def_property_struct_type(prop, "ThemeStatusBar");
   RNA_def_property_ui_text(prop, "Status Bar", "");
+
+  prop = RNA_def_property(srna, "spreadsheet", PROP_POINTER, PROP_NONE);
+  RNA_def_property_flag(prop, PROP_NEVER_NULL);
+  RNA_def_property_pointer_sdna(prop, NULL, "space_spreadsheet");
+  RNA_def_property_struct_type(prop, "ThemeSpreadsheet");
+  RNA_def_property_ui_text(prop, "Spreadsheet", "");
   /* end space types */
 
   prop = RNA_def_property(srna, "bone_color_sets", PROP_COLLECTION, PROP_NONE);
@@ -4254,6 +4281,7 @@ static void rna_def_userdef_dothemes(BlenderRNA *brna)
   rna_def_userdef_theme_space_clip(brna);
   rna_def_userdef_theme_space_topbar(brna);
   rna_def_userdef_theme_space_statusbar(brna);
+  rna_def_userdef_theme_space_spreadsheet(brna);
   rna_def_userdef_theme_colorset(brna);
   rna_def_userdef_theme_collection_color(brna);
   rna_def_userdef_themes(brna);
diff --git a/source/blender/windowmanager/WM_types.h b/source/blender/windowmanager/WM_types.h
index 084ca2d2df5..b46a354c7ae 100644
--- a/source/blender/windowmanager/WM_types.h
+++ b/source/blender/windowmanager/WM_types.h
@@ -427,6 +427,7 @@ typedef struct wmNotifier {
 #define ND_SPACE_CHANGED (19 << 16) /*sent to a new editor type after it's replaced an old one*/
 #define ND_SPACE_CLIP (20 << 16)
 #define ND_SPACE_FILE_PREVIEW (21 << 16)
+#define ND_SPACE_SPREADSHEET (22 << 16)
 
 /* subtype, 256 entries too */
 #define NOTE_SUBTYPE 0x0000FF00