theme: move title_height to theme struct

title_height is a derived variable which needs both config and theme
variables (font height and title padding). The code is tidier calling
post_processing() for this from theme_init()

include/config/rcxml.h

@@ -14,7 +14,6 @@ struct rcxml {
 	char *font_name_activewindow;
 	int font_size_activewindow;
 	struct wl_list keybinds;
-	int title_height; /* not set in rc.xml, but derived from font, etc */
 };
 
 extern struct rcxml rc;

include/theme.h

@@ -12,6 +12,7 @@
 
 struct theme {
 	int border_width;
+	int padding_height;
 
 	float window_active_border_color[4];
 	float window_inactive_border_color[4];
@@ -34,6 +35,9 @@ struct theme {
 	struct wlr_texture *xbm_close_inactive_unpressed;
 	struct wlr_texture *xbm_maximize_inactive_unpressed;
 	struct wlr_texture *xbm_iconify_inactive_unpressed;
+
+	/* not set in rc.xml or themerc, but derived from font and padding_height */
+	int title_height;
 };
 
 /**

src/config/rcxml.c

@@ -12,7 +12,6 @@
 #include <wayland-server-core.h>
 
 #include "common/dir.h"
-#include "common/font.h"
 #include "common/log.h"
 #include "common/nodename.h"
 #include "common/string-helpers.h"
@@ -236,15 +235,6 @@ bind(const char *binding, const char *action, const char *command)
 	}
 }
 
-static void
-set_title_height(void)
-{
-	char buf[256];
-	snprintf(buf, sizeof(buf), "%s %d", rc.font_name_activewindow,
-		 rc.font_size_activewindow);
-	rc.title_height = font_height(buf);
-}
-
 static void
 post_processing(void)
 {
@@ -261,10 +251,6 @@ post_processing(void)
 	if (!rc.font_name_activewindow) {
 		rc.font_name_activewindow = strdup("sans");
 	}
-	set_title_height();
-	if (rc.corner_radius >= rc.title_height) {
-		rc.corner_radius = rc.title_height - 1;
-	}
 }
 
 static void

src/ssd.c

@@ -18,7 +18,7 @@ ssd_thickness(struct view *view)
 {
 	struct theme *theme = view->server->theme;
 	struct border border = {
-		.top = rc.title_height + theme->border_width,
+		.top = theme->title_height + theme->border_width,
 		.bottom = theme->border_width,
 		.left = theme->border_width,
 		.right = theme->border_width,
@@ -44,37 +44,37 @@ ssd_box(struct view *view, enum ssd_part_type type)
 {
 	struct theme *theme = view->server->theme;
 	struct wlr_box box = { 0 };
-	int corner_square = rc.title_height + theme->border_width;
+	int corner_square = theme->title_height + theme->border_width;
 	assert(view);
 	switch (type) {
 	case LAB_SSD_BUTTON_CLOSE:
-		box.x = view->x + view->w - rc.title_height;
-		box.y = view->y - rc.title_height;
-		box.width = rc.title_height;
-		box.height = rc.title_height;
+		box.x = view->x + view->w - theme->title_height;
+		box.y = view->y - theme->title_height;
+		box.width = theme->title_height;
+		box.height = theme->title_height;
 		break;
 	case LAB_SSD_BUTTON_MAXIMIZE:
-		box.x = view->x + view->w - rc.title_height * 2;
-		box.y = view->y - rc.title_height;
-		box.width = rc.title_height;
-		box.height = rc.title_height;
+		box.x = view->x + view->w - theme->title_height * 2;
+		box.y = view->y - theme->title_height;
+		box.width = theme->title_height;
+		box.height = theme->title_height;
 		break;
 	case LAB_SSD_BUTTON_ICONIFY:
-		box.x = view->x + view->w - rc.title_height * 3;
-		box.y = view->y - rc.title_height;
-		box.width = rc.title_height;
-		box.height = rc.title_height;
+		box.x = view->x + view->w - theme->title_height * 3;
+		box.y = view->y - theme->title_height;
+		box.width = theme->title_height;
+		box.height = theme->title_height;
 		break;
 	case LAB_SSD_PART_TITLE:
-		box.x = view->x + rc.title_height;
-		box.y = view->y - rc.title_height;
-		box.width = view->w - 2 * rc.title_height;
-		box.height = rc.title_height;
+		box.x = view->x + theme->title_height;
+		box.y = view->y - theme->title_height;
+		box.width = view->w - 2 * theme->title_height;
+		box.height = theme->title_height;
 		break;
 	case LAB_SSD_PART_TOP:
-		box.x = view->x + rc.title_height;
+		box.x = view->x + theme->title_height;
 		box.y = view->y - corner_square;
-		box.width = view->w - 2 * rc.title_height;
+		box.width = view->w - 2 * theme->title_height;
 		box.height = theme->border_width;
 		break;
 	case LAB_SSD_PART_RIGHT:
@@ -102,7 +102,7 @@ ssd_box(struct view *view, enum ssd_part_type type)
 		box.height = corner_square;
 		break;
 	case LAB_SSD_PART_CORNER_TOP_RIGHT:
-		box.x = view->x + view->w - rc.title_height;
+		box.x = view->x + view->w - theme->title_height;
 		box.y = view->y - corner_square;
 		box.width = corner_square;
 		box.height = corner_square;

src/theme.c

@@ -7,9 +7,11 @@
 #include <string.h>
 
 #include "common/dir.h"
+#include "common/font.h"
 #include "common/log.h"
 #include "common/string-helpers.h"
 #include "common/zfree.h"
+#include "config/rcxml.h"
 #include "theme.h"
 #include "xbm/xbm.h"
 
@@ -64,6 +66,7 @@ parse_hexstr(const char *hex, float *rgba)
 void theme_builtin(struct theme *theme)
 {
 	theme->border_width = 1;
+	theme->padding_height = 3;
 
 	parse_hexstr("#dddad6", theme->window_active_border_color);
 	parse_hexstr("#f6f5f4", theme->window_inactive_border_color);
@@ -99,6 +102,9 @@ static void entry(struct theme *theme, const char *key, const char *value)
 	if (match(key, "border.width")) {
 		theme->border_width = atoi(value);
 	}
+	if (match(key, "padding.height")) {
+		theme->padding_height = atoi(value);
+	}
 
 	if (match(key, "window.active.border.color")) {
 		parse_hexstr(value, theme->window_active_border_color);
@@ -188,12 +194,27 @@ theme_read(struct theme *theme, const char *theme_name)
 	fclose(stream);
 }
 
+static void
+post_processing(struct theme *theme)
+{
+	char buf[256];
+	snprintf(buf, sizeof(buf), "%s %d", rc.font_name_activewindow,
+		 rc.font_size_activewindow);
+	theme->title_height = font_height(buf) + 2 * theme->padding_height;
+
+	if (rc.corner_radius >= theme->title_height) {
+		theme->title_height = rc.corner_radius + 1;
+	}
+
+}
+
 void
 theme_init(struct theme *theme, struct wlr_renderer *renderer,
 		const char *theme_name)
 {
 	theme_read(theme, theme_name);
 	xbm_load(theme, renderer);
+	post_processing(theme);
 }
 
 void