/* Get the icon for the specified class CLASS_NAME. If an icon for
CLASS_NAME already exists in the cache, then a reference to the cached
bitmap is returned. If it is not cached, then it is loaded and cached.
If no icon could be could for CLASS_NAME, then 0 is returned. */
static struct grub_video_bitmap *
get_icon_by_class (grub_gfxmenu_icon_manager_t mgr, const char *class_name)
{
/* First check the icon cache. */
icon_entry_t entry;
for (entry = mgr->cache.next; entry; entry = entry->next)
{
if (grub_strcmp (entry->class_name, class_name) == 0)
return entry->bitmap;
}
if (! mgr->theme_path)
return 0;
/* Otherwise, we search for an icon to load. */
char *theme_dir = grub_get_dirname (mgr->theme_path);
char *icons_dir;
struct grub_video_bitmap *icon;
icon = 0;
/* First try the theme's own icons, from "grub/themes/NAME/icons/" */
icons_dir = grub_resolve_relative_path (theme_dir, "icons/");
if (icons_dir)
{
icon = try_loading_icon (mgr, icons_dir, class_name);
grub_free (icons_dir);
}
grub_free (theme_dir);
if (! icon)
{
const char *icondir;
icondir = grub_env_get ("icondir");
if (icondir)
icon = try_loading_icon (mgr, icondir, class_name);
}
/* No icon was found. */
/* This should probably be noted in the cache, so that a search is not
performed each time an icon for CLASS_NAME is requested. */
if (! icon)
return 0;
/* Insert a new cache entry for this icon. */
entry = grub_malloc (sizeof (*entry));
if (! entry)
{
grub_video_bitmap_destroy (icon);
return 0;
}
entry->class_name = grub_strdup (class_name);
entry->bitmap = icon;
entry->next = mgr->cache.next;
mgr->cache.next = entry; /* Link it into the cache. */
return entry->bitmap;
}
/* Set properties on the view based on settings from the specified
theme file. */
grub_err_t
grub_gfxmenu_view_load_theme (grub_gfxmenu_view_t view, const char *theme_path)
{
grub_file_t file;
struct parsebuf p;
p.view = view;
p.theme_dir = grub_get_dirname (theme_path);
file = grub_file_open (theme_path, GRUB_FILE_TYPE_THEME);
if (! file)
{
grub_free (p.theme_dir);
return grub_errno;
}
p.len = grub_file_size (file);
p.buf = grub_malloc (p.len);
p.pos = 0;
p.line_num = 1;
p.col_num = 1;
p.filename = theme_path;
if (! p.buf)
{
grub_file_close (file);
grub_free (p.theme_dir);
return grub_errno;
}
if (grub_file_read (file, p.buf, p.len) != p.len)
{
grub_free (p.buf);
grub_file_close (file);
grub_free (p.theme_dir);
return grub_errno;
}
if (view->canvas)
view->canvas->component.ops->destroy (view->canvas);
view->canvas = grub_gui_canvas_new ();
if (!view->canvas)
goto fail;
((grub_gui_component_t) view->canvas)
->ops->set_bounds ((grub_gui_component_t) view->canvas,
&view->screen);
while (has_more (&p))
{
/* Skip comments (lines beginning with #). */
if (peek_char (&p) == '#')
{
advance_to_next_line (&p);
continue;
}
/* Find the first non-whitespace character. */
skip_whitespace (&p);
/* Handle the content. */
if (peek_char (&p) == '+')
{
/* Skip the '+'. */
read_char (&p);
read_object (&p, view->canvas);
}
else
{
read_property (&p);
}
if (grub_errno != GRUB_ERR_NONE)
goto fail;
}
/* Set the new theme path. */
grub_free (view->theme_path);
view->theme_path = grub_strdup (theme_path);
goto cleanup;
fail:
if (view->canvas)
{
view->canvas->component.ops->destroy (view->canvas);
view->canvas = 0;
}
cleanup:
grub_free (p.buf);
grub_file_close (file);
grub_free (p.theme_dir);
return grub_errno;
}
