Interface: New region type 'Footer', used by text editor

* It can be hidden by dragging it up/down.
* It can be at the top or bottom, independent of the header.
* It uses the color theme from the header.
* It does not change its color, when the area becomes active.

Currently, it is used in the text editor to display the file path.

Differential Revision: https://developer.blender.org/D4601

5 files changed, 32 insertions, 14 deletions

diff --git a/source/blender/editors/interface/interface_context_menu.c b/source/blender/editors/interface/interface_context_menu.c
index b5eb6302f81..4ca92fbb386 100644
--- a/source/blender/editors/interface/interface_context_menu.c
+++ b/source/blender/editors/interface/interface_context_menu.c
@@ -847,6 +847,9 @@ bool ui_popup_context_menu_for_button(bContext *C, uiBut *but)
 		else if (ar->regiontype == RGN_TYPE_NAV_BAR) {
 			uiItemMenuF(layout, IFACE_("Navigation Bar"), ICON_NONE, ED_screens_navigation_bar_tools_menu_create, NULL);
 		}
+		else if (ar->regiontype == RGN_TYPE_FOOTER) {
+			uiItemMenuF(layout, IFACE_("Footer"), ICON_NONE, ED_screens_footer_tools_menu_create, NULL);
+		}
 	}
 
 	MenuType *mt = WM_menutype_find("WM_MT_button_context", true);
diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index 208c1a90b89..07be2253969 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -1784,7 +1784,7 @@ static bool ui_but_drag_init(
 
 			/* Initialize alignment for single row/column regions,
 			 * otherwise we use the relative position of the first other button dragged over. */
-			if (ELEM(data->region->regiontype, RGN_TYPE_NAV_BAR, RGN_TYPE_HEADER)) {
+			if (ELEM(data->region->regiontype, RGN_TYPE_NAV_BAR, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
 				int lock_axis = -1;
 				if (ELEM(data->region->alignment, RGN_ALIGN_LEFT, RGN_ALIGN_RIGHT)) {
 					lock_axis = 0;
diff --git a/source/blender/editors/interface/interface_region_menu_popup.c b/source/blender/editors/interface/interface_region_menu_popup.c
index a20c4fe9379..0fe847caa20 100644
--- a/source/blender/editors/interface/interface_region_menu_popup.c
+++ b/source/blender/editors/interface/interface_region_menu_popup.c
@@ -278,11 +278,19 @@ static uiBlock *ui_block_func_POPUP(bContext *C, uiPopupBlockHandle *handle, voi
 		/* for a header menu we set the direction automatic */
 		if (!pup->slideout && flip) {
 			ScrArea *sa = CTX_wm_area(C);
-			if (sa && ED_area_header_alignment(sa) == RGN_ALIGN_BOTTOM) {
-				ARegion *ar = CTX_wm_region(C);
-				if (ar && ar->regiontype == RGN_TYPE_HEADER) {
-					UI_block_direction_set(block, UI_DIR_UP);
-					UI_block_order_flip(block);
+			ARegion *ar = CTX_wm_region(C);
+			if (sa && ar) {
+				if (ar->regiontype == RGN_TYPE_HEADER) {
+					if (ED_area_header_alignment(sa) == RGN_ALIGN_BOTTOM) {
+						UI_block_direction_set(block, UI_DIR_UP);
+						UI_block_order_flip(block);
+					}
+				}
+				if (ar->regiontype == RGN_TYPE_FOOTER) {
+					if (ED_area_footer_alignment(sa) == RGN_ALIGN_BOTTOM) {
+						UI_block_direction_set(block, UI_DIR_UP);
+						UI_block_order_flip(block);
+					}
 				}
 			}
 		}
diff --git a/source/blender/editors/interface/interface_region_popover.c b/source/blender/editors/interface/interface_region_popover.c
index 0b1d3f19919..7ca6db2ca21 100644
--- a/source/blender/editors/interface/interface_region_popover.c
+++ b/source/blender/editors/interface/interface_region_popover.c
@@ -180,10 +180,17 @@ static uiBlock *ui_block_func_POPOVER(bContext *C, uiPopupBlockHandle *handle, v
 				 * see the values of the buttons below changing. */
 				UI_block_direction_set(block, UI_DIR_UP | UI_DIR_CENTER_X);
 			}
-			else if (sa && ED_area_header_alignment(sa) == RGN_ALIGN_BOTTOM) {
-				/* Prefer popover from header to be positioned into the editor. */
-				if (ar && ar->regiontype == RGN_TYPE_HEADER) {
-					UI_block_direction_set(block, UI_DIR_UP | UI_DIR_CENTER_X);
+			/* Prefer popover from header to be positioned into the editor. */
+			else if (sa && ar) {
+				if (ar->regiontype == RGN_TYPE_HEADER){
+					if (ED_area_header_alignment(sa) == RGN_ALIGN_BOTTOM) {
+						UI_block_direction_set(block, UI_DIR_UP | UI_DIR_CENTER_X);
+					}
+				}
+				if (ar->regiontype == RGN_TYPE_FOOTER) {
+					if (ED_area_footer_alignment(sa) == RGN_ALIGN_BOTTOM) {
+						UI_block_direction_set(block, UI_DIR_UP | UI_DIR_CENTER_X);
+					}
 				}
 			}
 		}
diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index 72739b99e14..8d908375c1b 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -173,7 +173,7 @@ const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
 					else if (theme_regionid == RGN_TYPE_CHANNELS) {
 						cp = ts->list;
 					}
-					else if (theme_regionid == RGN_TYPE_HEADER) {
+					else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
 						cp = ts->header;
 					}
 					else if (theme_regionid == RGN_TYPE_NAV_BAR) {
@@ -207,7 +207,7 @@ const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
 					else if (theme_regionid == RGN_TYPE_CHANNELS) {
 						cp = ts->list_text;
 					}
-					else if (theme_regionid == RGN_TYPE_HEADER) {
+					else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
 						cp = ts->header_text;
 					}
 					else {
@@ -221,7 +221,7 @@ const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
 					else if (theme_regionid == RGN_TYPE_CHANNELS) {
 						cp = ts->list_text_hi;
 					}
-					else if (theme_regionid == RGN_TYPE_HEADER) {
+					else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
 						cp = ts->header_text_hi;
 					}
 					else {
@@ -235,7 +235,7 @@ const uchar *UI_ThemeGetColorPtr(bTheme *btheme, int spacetype, int colorid)
 					else if (theme_regionid == RGN_TYPE_CHANNELS) {
 						cp = ts->list_title;
 					}
-					else if (theme_regionid == RGN_TYPE_HEADER) {
+					else if (ELEM(theme_regionid, RGN_TYPE_HEADER, RGN_TYPE_FOOTER)) {
 						cp = ts->header_title;
 					}
 					else {