theming: respect system theme by default

This commit is contained in:
2026-07-07 14:00:25 -06:00
parent 4944517a0e
commit 89d70a940c
16 changed files with 870 additions and 164 deletions

View File

@@ -315,6 +315,59 @@ resolve_parent_theme_root (const char *child_theme_root, const char *parent_name
return home_local;
g_free (home_local);
{
const char *xdg_data_home = g_getenv ("XDG_DATA_HOME");
if (xdg_data_home && xdg_data_home[0])
{
candidate = g_build_filename (xdg_data_home, "themes", parent_name, NULL);
if (path_exists_as_dir (candidate))
return candidate;
g_free (candidate);
}
}
candidate = g_build_filename (g_get_user_data_dir (), "themes", parent_name, NULL);
if (path_exists_as_dir (candidate))
return candidate;
g_free (candidate);
{
const char *xdg_data_dirs = g_getenv ("XDG_DATA_DIRS");
guint i;
if (xdg_data_dirs && xdg_data_dirs[0])
{
char **data_dirs = g_strsplit (xdg_data_dirs, G_SEARCHPATH_SEPARATOR_S, -1);
for (i = 0; data_dirs && data_dirs[i]; i++)
{
if (!data_dirs[i][0])
continue;
candidate = g_build_filename (data_dirs[i], "themes", parent_name, NULL);
if (path_exists_as_dir (candidate))
{
g_strfreev (data_dirs);
return candidate;
}
g_free (candidate);
}
g_strfreev (data_dirs);
}
else
{
const char *const *system_data_dirs = g_get_system_data_dirs ();
for (i = 0; system_data_dirs && system_data_dirs[i]; i++)
{
candidate = g_build_filename (system_data_dirs[i], "themes", parent_name, NULL);
if (path_exists_as_dir (candidate))
return candidate;
g_free (candidate);
}
}
}
user_dir = zoitechat_gtk3_theme_service_get_user_themes_dir ();
candidate = g_build_filename (user_dir, parent_name, NULL);
g_free (user_dir);
@@ -632,18 +685,50 @@ zoitechat_gtk3_theme_service_discover (void)
g_mkdir_with_parents (user_dir, 0700);
user_data_themes = g_build_filename (g_get_user_data_dir (), "themes", NULL);
/* Prefer the live XDG environment over GLib's process-cached copies so
* theme lookup matches what GTK resolves for the running session. */
{
const char *xdg_data_home = g_getenv ("XDG_DATA_HOME");
if (xdg_data_home && xdg_data_home[0])
user_data_themes = g_build_filename (xdg_data_home, "themes", NULL);
else
user_data_themes = g_build_filename (g_get_user_data_dir (), "themes", NULL);
}
add_theme_root (user_roots, seen_user_roots, user_data_themes);
g_free (user_data_themes);
add_theme_root (user_roots, seen_user_roots, home_themes);
add_theme_root (user_roots, seen_user_roots, user_dir);
system_data_dirs = g_get_system_data_dirs ();
for (i = 0; system_data_dirs && system_data_dirs[i]; i++)
{
char *system_themes = g_build_filename (system_data_dirs[i], "themes", NULL);
add_theme_root (system_roots, seen_system_roots, system_themes);
g_free (system_themes);
const char *xdg_data_dirs = g_getenv ("XDG_DATA_DIRS");
if (xdg_data_dirs && xdg_data_dirs[0])
{
char **data_dirs = g_strsplit (xdg_data_dirs, G_SEARCHPATH_SEPARATOR_S, -1);
for (i = 0; data_dirs && data_dirs[i]; i++)
{
char *system_themes;
if (!data_dirs[i][0])
continue;
system_themes = g_build_filename (data_dirs[i], "themes", NULL);
add_theme_root (system_roots, seen_system_roots, system_themes);
g_free (system_themes);
}
g_strfreev (data_dirs);
}
else
{
system_data_dirs = g_get_system_data_dirs ();
for (i = 0; system_data_dirs && system_data_dirs[i]; i++)
{
char *system_themes = g_build_filename (system_data_dirs[i], "themes", NULL);
add_theme_root (system_roots, seen_system_roots, system_themes);
g_free (system_themes);
}
}
}
for (i = 0; i < system_roots->len; i++)
@@ -922,7 +1007,7 @@ static gboolean
validate_theme_root_for_import (const char *theme_root, GError **error)
{
char *index_theme;
GKeyFile *keyfile;
GKeyFile *keyfile = NULL;
char *css_dir;
char *css_path;
char *raw_inherits;
@@ -930,36 +1015,33 @@ validate_theme_root_for_import (const char *theme_root, GError **error)
guint i;
GError *load_error = NULL;
/* index.theme is optional for GTK3 CSS themes (GTK only needs
* gtk-3.x/gtk.css), but when it is present it must be well formed so
* broken archives are rejected up front. */
index_theme = g_build_filename (theme_root, "index.theme", NULL);
if (!g_file_test (index_theme, G_FILE_TEST_IS_REGULAR))
if (g_file_test (index_theme, G_FILE_TEST_IS_REGULAR))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': missing required index.theme at '%s'.",
theme_root, index_theme);
g_free (index_theme);
return FALSE;
}
keyfile = g_key_file_new ();
if (!g_key_file_load_from_file (keyfile, index_theme, G_KEY_FILE_NONE, &load_error))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': failed to parse index.theme '%s': %s.",
theme_root, index_theme, load_error->message);
g_error_free (load_error);
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
}
keyfile = g_key_file_new ();
if (!g_key_file_load_from_file (keyfile, index_theme, G_KEY_FILE_NONE, &load_error))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': failed to parse index.theme '%s': %s.",
theme_root, index_theme, load_error->message);
g_error_free (load_error);
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
}
if (!g_key_file_has_group (keyfile, "Desktop Entry"))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': index.theme '%s' is missing the [Desktop Entry] section.",
theme_root, index_theme);
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
if (!g_key_file_has_group (keyfile, "Desktop Entry"))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': index.theme '%s' is missing the [Desktop Entry] section.",
theme_root, index_theme);
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
}
}
css_dir = zoitechat_gtk3_theme_pick_css_dir (theme_root);
@@ -968,7 +1050,8 @@ validate_theme_root_for_import (const char *theme_root, GError **error)
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_INVAL,
"Invalid GTK3 theme at '%s': could not resolve a GTK CSS directory (expected gtk-3.x/gtk.css).",
theme_root);
g_key_file_unref (keyfile);
if (keyfile)
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
}
@@ -981,15 +1064,20 @@ validate_theme_root_for_import (const char *theme_root, GError **error)
theme_root, css_path);
g_free (css_path);
g_free (css_dir);
g_key_file_unref (keyfile);
if (keyfile)
g_key_file_unref (keyfile);
g_free (index_theme);
return FALSE;
}
g_free (css_path);
g_free (css_dir);
raw_inherits = g_key_file_get_string (keyfile, "Desktop Entry", "Inherits", NULL);
g_key_file_unref (keyfile);
raw_inherits = NULL;
if (keyfile)
{
raw_inherits = g_key_file_get_string (keyfile, "Desktop Entry", "Inherits", NULL);
g_key_file_unref (keyfile);
}
g_free (index_theme);
if (!raw_inherits)
return TRUE;