UI: New Global Top-Bar (WIP)

== Main Features/Changes for Users

* Add horizontal bar at top of all non-temp windows, consisting out of two horizontal sub-bars.
* Upper sub-bar contains global menus (File, Render, etc.), tabs for workspaces and scene selector.
* Lower sub-bar contains object mode selector, screen-layout and render-layer selector. Later operator and/or tool settings will be placed here.
* Individual sections of the topbar are individually scrollable.
* Workspace tabs can be double- or ctrl-clicked for renaming and contain 'x' icon for deleting.
* Top-bar should scale nicely with DPI.
* The lower half of the top-bar can be hided by dragging the lower top-bar edge up. Better hiding options are planned (e.g. hide in fullscreen modes).
* Info editors at the top of the window and using the full window width with be replaced by the top-bar.
* In fullscreen modes, no more info editor is added on top, the top-bar replaces it.

== Technical Features/Changes

* Adds initial support for global areas

  A global area is part of the window, not part of the regular screen-layout.
  I've added a macro iterator to iterate over both, global and screen-layout level areas. When iterating over areas, from now on developers should always consider if they have to include global areas.
* Adds a TOPBAR editor type

  The editor type is hidden in the UI editor type menu.
* Adds a variation of the ID template to display IDs as tab buttons (template_ID_tabs in BPY)
* Does various changes to RNA button creation code to improve their appearance in the horizontal top-bar.
* Adds support for dynamically sized regions. That is, regions that scale automatically to the layout bounds.

  The code for this is currently a big hack (it's based on drawing the UI multiple times). This should definitely be improved.
* Adds a template for displaying operator properties optimized for the top-bar. This will probably change a lot still and is in fact disabled in code.

Since the final top-bar design depends a lot on other 2.8 designs (mainly tool-system and workspaces), we decided to not show the operator or tool settings in the top-bar for now. That means most of the lower sub-bar is empty for the time being.

NOTE: Top-bar or global area data is not written to files or SDNA. They are simply added to the window when opening Blender or reading a file. This allows us doing changes to the top-bar without having to care for compatibility.

== ToDo's

It's a bit hard to predict all the ToDo's here are the known main ones:
* Add options for the new active-tool system and for operator redo to the topbar.
* Automatically hide the top-bar in fullscreen modes.
* General visual polish.
* Top-bar drag & drop support (WIP in temp-tab_drag_drop).
* Improve dynamic regions (should also fix some layout glitches).
* Make internal terminology consistent.
* Enable topbar file writing once design is more advanced.
* Address TODO's and XXX's in code :)

Thanks @brecht for the review! And @sergey for the complaining ;)

Differential Revision: D2758

1 files changed, 20 insertions, 2 deletions

diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index d13b7e8ea74..b40ab09036f 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -165,6 +165,9 @@ const unsigned char *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colo
 				case SPACE_CLIP:
 					ts = &btheme->tclip;
 					break;
+				case SPACE_TOPBAR:
+					ts = &btheme->ttopbar;
+					break;
 				default:
 					ts = &btheme->tv3d;
 					break;
@@ -1225,6 +1228,14 @@ void ui_theme_init_default(void)
 	rgba_char_args_set(btheme->tclip.strip_select, 0xff, 0x8c, 0x00, 0xff);
 	btheme->tclip.handle_vertex_size = 5;
 	ui_theme_space_init_handles_color(&btheme->tclip);
+
+	/* space topbar */
+	char tmp[4];
+	btheme->ttopbar = btheme->tv3d;
+	/* swap colors */
+	copy_v4_v4_char(tmp, btheme->ttopbar.header);
+	copy_v4_v4_char(btheme->ttopbar.header, btheme->ttopbar.tab_inactive);
+	copy_v4_v4_char(btheme->ttopbar.back, tmp);
 }
 
 void ui_style_init_default(void)
@@ -2914,10 +2925,10 @@ void init_userdef_do_versions(void)
 		U.uiflag |= USER_LOCK_CURSOR_ADJUST;
 	}
 
-	if (!USER_VERSION_ATLEAST(280, 1)) {
+	if (!USER_VERSION_ATLEAST(280, 9)) {
 		/* interface_widgets.c */
 		struct uiWidgetColors wcol_tab = {
-			{255, 255, 255, 255},
+			{60, 60, 60, 255},
 			{83, 83, 83, 255},
 			{114, 114, 114, 255},
 			{90, 90, 90, 255},
@@ -2930,7 +2941,14 @@ void init_userdef_do_versions(void)
 		};
 
 		for (bTheme *btheme = U.themes.first; btheme; btheme = btheme->next) {
+			char tmp[4];
+
 			btheme->tui.wcol_tab = wcol_tab;
+			btheme->ttopbar = btheme->tv3d;
+			/* swap colors */
+			copy_v4_v4_char(tmp, btheme->ttopbar.header);
+			copy_v4_v4_char(btheme->ttopbar.header, btheme->ttopbar.tab_inactive);
+			copy_v4_v4_char(btheme->ttopbar.back, tmp);
 		}
 	}