From 1330071e0c3afe9dc5fcbdfe0465344e1ecf0e05 Mon Sep 17 00:00:00 2001
From: Johan Malm <jgm323@gmail.com>
Date: Thu, 9 Jul 2020 22:41:54 +0100
Subject: [PATCH] Load close.xbm based on rc.xml theme name

---
 README.md           |  4 ++-
 data/rc.xml         |  9 +++++++
 include/rcxml.h     |  1 +
 src/config/rcxml.c  |  4 ++-
 src/theme/xbm/xbm.c | 60 +++++++++++++++++++++++++++++++++++++++------
 5 files changed, 69 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 69aacd15..a6dd0114 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,8 @@ libxml2, glib-2.0, cairo and pango.
 - [ ] Implement client-menu
 - [ ] Implement root-menu
 
+For further details see [wiki/Roadmap](https://github.com/johanmalm/labwc/wiki/Roadmap).
+
 ## Inspiration
 
 Labwc has been inspired and inflenced by [openbox](https://github.com/danakj/openbox), [sway](https://github.com/swaywm/sway), [cage](https://www.hjdskes.nl/blog/cage-01/), [wio](https://wio-project.org/) and [rootston](https://github.com/swaywm/rootston)
@@ -67,5 +69,5 @@ Suggested apps:
 
 To enable ASAN and UBSAN, run meson with `-Db_sanitize=address,undefined`
 
-For further details see [wiki/Build](https://github.com/labwc/wiki/Build).
+For further details see [wiki/Build](https://github.com/johanmalm/labwc/wiki/Build).
 
diff --git a/data/rc.xml b/data/rc.xml
index 19798ef9..e097bd6f 100644
--- a/data/rc.xml
+++ b/data/rc.xml
@@ -14,6 +14,15 @@
   </keyboard>
 </lab>
 
+<theme>
+  <name>Clearlooks</name>
+  <titleLayout>NLIMC</titleLayout>
+  <font place="ActiveWindow">
+    <name>sans</name>
+    <size>8</size>
+  </font>
+</theme>
+
 <keyboard>
   <keybind key="A-Escape">
     <action name="Exit"/>
diff --git a/include/rcxml.h b/include/rcxml.h
index 55f93884..1b0a099c 100644
--- a/include/rcxml.h
+++ b/include/rcxml.h
@@ -30,6 +30,7 @@ struct keybind *keybind_add(const char *keybind);
 
 struct rcxml {
 	bool client_side_decorations;
+	char *theme_name;
 	struct wl_list keybinds;
 };
 
diff --git a/src/config/rcxml.c b/src/config/rcxml.c
index 7196daf8..460e9a0c 100644
--- a/src/config/rcxml.c
+++ b/src/config/rcxml.c
@@ -78,8 +78,10 @@ static void entry(xmlNode *node, char *nodename, char *content)
 		fill_keybind(node, nodename, content);
 	if (!strcmp(nodename, "csd.lab"))
 		rc.client_side_decorations = get_bool(content);
-	if (!strcmp(nodename, "layout.keyboard.lab"))
+	else if (!strcmp(nodename, "layout.keyboard.lab"))
 		setenv("XKB_DEFAULT_LAYOUT", content, 1);
+	else if (!strcmp(nodename, "name.theme"))
+		rc.theme_name = strdup(content);
 }
 
 static char *nodename(xmlNode *node, char *buf, int len)
diff --git a/src/theme/xbm/xbm.c b/src/theme/xbm/xbm.c
index 3df66047..5b90167a 100644
--- a/src/theme/xbm/xbm.c
+++ b/src/theme/xbm/xbm.c
@@ -6,9 +6,27 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
 
 #include "theme/xbm/xbm.h"
 #include "theme/xbm/parse.h"
+#include "rcxml.h"
+
+struct dir {
+	const char *prefix;
+	const char *path;
+};
+
+static struct dir theme_dirs[] = {
+	{ "XDG_DATA_HOME", "themes" },
+	{ "HOME", ".local/share/themes" },
+	{ "HOME", ".themes" },
+	{ "XDG_DATA_HOME", "themes" },
+	{ NULL, "/usr/share/themes" },
+	{ NULL, "/usr/local/share/themes" },
+	{ NULL, "opt/share/themes" },
+	{ NULL, NULL }
+};
 
 /* built-in 6x6 buttons */
 char close_button_normal[] = { 0x33, 0x3f, 0x1e, 0x1e, 0x3f, 0x33 };
@@ -16,12 +34,6 @@ char iconify_button_normal[] = { 0x00, 0x00, 0x00, 0x00, 0x3f, 0x3f };
 char max_button_normal[] = { 0x3f, 0x3f, 0x21, 0x21, 0x21, 0x3f };
 char max_button_toggled[] = { 0x3e, 0x22, 0x2f, 0x29, 0x39, 0x0f };
 
-/*
- * TODO: parse rc.xml theme name and look for icons properly.
- *       Just using random icon to prove the point.
- */
-static char filename[] = "/usr/share/themes/Bear2/openbox-3/close.xbm";
-
 static struct wlr_texture *texture_from_pixmap(struct wlr_renderer *renderer,
 					       struct pixmap *pixmap)
 {
@@ -42,11 +54,45 @@ static struct wlr_texture *builtin(struct wlr_renderer *renderer,
 	return texture;
 }
 
+static char *theme_dir(void)
+{
+	static char buffer[4096] = { 0 };
+	if (buffer[0] != '\0')
+		return buffer;
+
+	struct stat st;
+	for (int i = 0; theme_dirs[i].path; i++) {
+		char *prefix = NULL;
+		struct dir d = theme_dirs[i];
+		if (d.prefix) {
+			prefix = getenv(d.prefix);
+			if (!prefix)
+				continue;
+			snprintf(buffer, sizeof(buffer), "%s/%s/%s/openbox-3",
+				 prefix, d.path, rc.theme_name);
+		} else {
+			snprintf(buffer, sizeof(buffer), "%s/%s/openbox-3",
+				 d.path, rc.theme_name);
+		}
+		if (!stat(buffer, &st) && S_ISDIR(st.st_mode))
+			return buffer;
+	}
+	buffer[0] = '\0';
+	return buffer;
+}
+
+static char *xbm_path(const char *button)
+{
+	static char buffer[4096] = { 0 };
+	snprintf(buffer, sizeof(buffer), "%s/%s", theme_dir(), button);
+	return buffer;
+}
+
 void xbm_load(struct wlr_renderer *renderer)
 {
 	struct token *tokens;
 
-	char *buffer = xbm_read_file(filename);
+	char *buffer = xbm_read_file(xbm_path("close.xbm"));
 	if (!buffer) {
 		fprintf(stderr, "no buffer\n");
 		goto out;