Refactor title height to use 'titlebar.height' from themerc

docs/labwc-theme.5.scd

@@ -47,6 +47,10 @@ labwc-config(5).
 	Vertical padding size, used for spacing out elements in the window decorations.
 	Default is 3.
 
+*titlebar.height*
+	Window title bar height.
+	Default equals the vertical font extents of the title plus 2x padding.height.
+
 *menu.items.padding.x*
 	Horizontal padding of menu text entries in pixels.
 	Default is 7.
@@ -202,11 +206,6 @@ with the respective titlebar colors. For example: "close-active.png"
 
 The handle is the window edge decoration at the bottom of the window.
 
-# DERIVED DIMENSIONS
-
-The window title bar height is equal to the vertical font extents of the title.
-Padding will be added to this later.
-
 # SEE ALSO
 
 labwc(1), labwc-config(5), labwc-actions(5)

docs/themerc

@@ -9,6 +9,10 @@
 border.width: 1
 padding.height: 3
 
+# The following options has no default, but fallbacks back to
+# font-height + 2x padding.height if not set.
+# titlebar.height:
+
 # window border
 window.active.border.color: #dddad6
 window.inactive.border.color: #f6f5f4

include/theme.h

@@ -20,6 +20,7 @@ enum lab_justification {
 struct theme {
 	int border_width;
 	int padding_height;
+	int title_height;
 	int menu_overlap_x;
 	int menu_overlap_y;
 
@@ -92,7 +93,6 @@ struct theme {
 	struct lab_data_buffer *corner_top_right_inactive_normal;
 
 	/* not set in rc.xml/themerc, but derived from font & padding_height */
-	int title_height;
 	int osd_window_switcher_item_height;
 };
 

src/theme.c

@@ -213,6 +213,7 @@ theme_builtin(struct theme *theme)
 {
 	theme->border_width = 1;
 	theme->padding_height = 3;
+	theme->title_height = INT_MIN;
 	theme->menu_overlap_x = 0;
 	theme->menu_overlap_y = 0;
 
@@ -291,6 +292,9 @@ entry(struct theme *theme, const char *key, const char *value)
 	if (match_glob(key, "padding.height")) {
 		theme->padding_height = atoi(value);
 	}
+	if (match_glob(key, "titlebar.height")) {
+		theme->title_height = atoi(value);
+	}
 	if (match_glob(key, "menu.items.padding.x")) {
 		theme->menu_item_padding_x = atoi(value);
 	}
@@ -750,8 +754,11 @@ create_corners(struct theme *theme)
 static void
 post_processing(struct theme *theme)
 {
-	theme->title_height = font_height(&rc.font_activewindow)
+	int h = font_height(&rc.font_activewindow);
-		+ 2 * theme->padding_height;
+	if (theme->title_height < h) {
+		theme->title_height = h + 2 * theme->padding_height;
+	}
+
 	theme->osd_window_switcher_item_height = font_height(&rc.font_osd)
 		+ 2 * theme->osd_window_switcher_item_padding_y
 		+ 2 * theme->osd_window_switcher_item_active_border_width;