theme: add menu.overlap.{x,y}

docs/labwc-theme.5.scd

@@ -41,6 +41,16 @@ A theme consists of a themerc file and optionally some xbm icons.
 	Vertical padding size, used for spacing out elements in the window decorations.
 	Default is 3.
 
+*menu.overlap.x*
+	Horizontal overlap in pixels between submenus and their parents. A
+	positive value move submenus over the top of their parents, whereas a
+	negative value creates a gap between submenus and their parents.
+	Default is 0.
+
+*menu.overlap.y*
+	Vertical offset in pixels between submenus and their parents. Positive
+	values for downwards and negative for upwards. Default is 0.
+
 *window.active.border.color*
 	Border color of active window
 

docs/themerc

@@ -1,6 +1,8 @@
 # general
 border.width: 1
 padding.height: 3
+menu.overlap.x: 0
+menu.overlap.y: 0
 
 # window border
 window.active.border.color: #dddad6

include/theme.h

@@ -19,7 +19,10 @@ enum lab_justification {
 struct theme {
 	int border_width;
 	int padding_height;
+	int menu_overlap_x;
+	int menu_overlap_y;
 
+	/* colors */
 	float window_active_border_color[4];
 	float window_inactive_border_color[4];
 
@@ -30,7 +33,7 @@ struct theme {
 	float window_inactive_label_text_color[4];
 	enum lab_justification window_label_text_justify;
 
-	/* buttons */
+	/* button colors */
 	float window_active_button_iconify_unpressed_image_color[4];
 	float window_active_button_max_unpressed_image_color[4];
 	float window_active_button_close_unpressed_image_color[4];
@@ -47,6 +50,7 @@ struct theme {
 	float osd_bg_color[4];
 	float osd_label_text_color[4];
 
+	/* textures */
 	struct wlr_texture *xbm_close_active_unpressed;
 	struct wlr_texture *xbm_maximize_active_unpressed;
 	struct wlr_texture *xbm_iconify_active_unpressed;

src/menu/menu.c

@@ -276,6 +276,8 @@ err:
 static void
 menu_configure(struct menu *menu, int x, int y)
 {
+	struct theme *theme = menu->server->theme;
+
 	menu->box.x = x;
 	menu->box.y = y;
 
@@ -286,10 +288,9 @@ menu_configure(struct menu *menu, int x, int y)
 		menuitem->box.y = menu->box.y + offset;
 		offset += menuitem->box.height;
 		if (menuitem->submenu) {
-			/* TODO: add offset to rc.xml */
-			menu_configure(menuitem->submenu,
-				menuitem->box.x + MENUWIDTH + 10,
-				menuitem->box.y);
+			menu_configure(menuitem->submenu, menuitem->box.x
+				+ MENUWIDTH - theme->menu_overlap_x,
+				menuitem->box.y + theme->menu_overlap_y);
 		}
 	}
 

src/theme.c

@@ -91,6 +91,8 @@ theme_builtin(struct theme *theme)
 {
 	theme->border_width = 1;
 	theme->padding_height = 3;
+	theme->menu_overlap_x = 0;
+	theme->menu_overlap_y = 0;
 
 	parse_hexstr("#dddad6", theme->window_active_border_color);
 	parse_hexstr("#f6f5f4", theme->window_inactive_border_color);
@@ -152,6 +154,12 @@ entry(struct theme *theme, const char *key, const char *value)
 	if (match(key, "padding.height")) {
 		theme->padding_height = atoi(value);
 	}
+	if (match(key, "menu.overlap.x")) {
+		theme->menu_overlap_x = atoi(value);
+	}
+	if (match(key, "menu.overlap.y")) {
+		theme->menu_overlap_y = atoi(value);
+	}
 
 	if (match(key, "window.active.border.color")) {
 		parse_hexstr(value, theme->window_active_border_color);