/* Release allocated resources in theme instance */
static void _xfdashboard_theme_clean(XfdashboardTheme *self)
{
XfdashboardThemePrivate *priv;
g_return_if_fail(XFDASHBOARD_IS_THEME(self));
priv=self->priv;
/* Release allocated resources */
if(priv->themeName)
{
g_free(priv->themeName);
priv->themeName=NULL;
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_NAME]);
}
if(priv->themePath)
{
g_free(priv->themePath);
priv->themePath=NULL;
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_PATH]);
}
if(priv->themeDisplayName)
{
g_free(priv->themeDisplayName);
priv->themeDisplayName=NULL;
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_DISPLAY_NAME]);
}
if(priv->themeComment)
{
g_free(priv->themeComment);
priv->themeComment=NULL;
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_COMMENT]);
}
if(priv->styling)
{
g_object_unref(priv->styling);
priv->styling=NULL;
}
if(priv->layout)
{
g_object_unref(priv->layout);
priv->layout=NULL;
}
if(priv->effects)
{
g_object_unref(priv->effects);
priv->effects=NULL;
}
}
/* Theme's name was set so lookup pathes and initialize but do not load resources */
static void _xfdashboard_theme_set_theme_name(XfdashboardTheme *self, const gchar *inThemeName)
{
XfdashboardThemePrivate *priv;
gchar *themePath;
g_return_if_fail(XFDASHBOARD_IS_THEME(self));
g_return_if_fail(inThemeName && *inThemeName);
priv=self->priv;
/* The theme name must not be set already */
if(priv->themeName)
{
/* Show error message */
g_critical(_("Cannot change theme name to '%s' because it is already set to '%s'"),
inThemeName,
priv->themeName);
return;
}
/* Lookup path of theme by lookup at all possible paths for theme file */
themePath=_xfdashboard_theme_lookup_path_for_theme(self, inThemeName);
if(!themePath)
{
g_critical(_("Theme '%s' not found"), inThemeName);
/* Return here because looking up path failed */
return;
}
/* Set up internal variable and notify about property changes */
priv->themeName=g_strdup(inThemeName);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_NAME]);
priv->themePath=g_strdup(themePath);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_PATH]);
/* Initialize theme resources */
priv->styling=xfdashboard_theme_css_new(priv->themePath);
priv->layout=xfdashboard_theme_layout_new();
priv->effects=xfdashboard_theme_effects_new();
/* Release allocated resources */
if(themePath) g_free(themePath);
}
/* Lookup named theme and load resources */
gboolean xfdashboard_theme_load(XfdashboardTheme *self,
GError **outError)
{
XfdashboardThemePrivate *priv;
GError *error;
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), FALSE);
g_return_val_if_fail(outError==NULL || *outError==NULL, FALSE);
priv=self->priv;
error=NULL;
/* Check if a theme was already loaded */
if(priv->loaded)
{
g_set_error(outError,
XFDASHBOARD_THEME_ERROR,
XFDASHBOARD_THEME_ERROR_ALREADY_LOADED,
_("Theme '%s' was already loaded"),
priv->themeName);
return(FALSE);
}
/* We set the loaded flag regardless if loading will be successful or not
* because if loading theme fails this object is in undefined state for
* re-using it to load theme again.
*/
priv->loaded=TRUE;
/* Load theme key file */
if(!_xfdashboard_theme_load_resources(self, &error))
{
/* Set returned error */
g_propagate_error(outError, error);
/* Return FALSE to indicate error */
return(FALSE);
}
/* If we found named themed and could load all resources successfully */
return(TRUE);
}
/* Load theme file and all listed resources in this file */
static gboolean _xfdashboard_theme_load_resources(XfdashboardTheme *self,
GError **outError)
{
XfdashboardThemePrivate *priv;
GError *error;
gchar *themeFile;
GKeyFile *themeKeyFile;
gchar **resources, **resource;
gchar *resourceFile;
gint counter;
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), FALSE);
g_return_val_if_fail(outError==NULL || *outError==NULL, FALSE);
priv=self->priv;
error=NULL;
/* Check that theme was found */
if(!priv->themePath)
{
/* Set error */
g_set_error(outError,
XFDASHBOARD_THEME_ERROR,
XFDASHBOARD_THEME_ERROR_THEME_NOT_FOUND,
_("Theme '%s' not found"),
priv->themeName);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Load theme file */
themeFile=g_build_filename(priv->themePath, XFDASHBOARD_THEME_FILE, NULL);
themeKeyFile=g_key_file_new();
if(!g_key_file_load_from_file(themeKeyFile,
themeFile,
G_KEY_FILE_NONE,
&error))
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeFile) g_free(themeFile);
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
g_free(themeFile);
/* Get display name and notify about property change (regardless of success result) */
priv->themeDisplayName=g_key_file_get_locale_string(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Name",
NULL,
&error);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_DISPLAY_NAME]);
if(!priv->themeDisplayName)
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Get comment and notify about property change (regardless of success result) */
priv->themeComment=g_key_file_get_locale_string(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Comment",
NULL,
&error);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_COMMENT]);
if(!priv->themeComment)
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Create CSS parser and load style resources */
resources=g_key_file_get_string_list(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Style",
NULL,
&error);
if(!resources)
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
counter=0;
resource=resources;
while(*resource)
{
/* Get path and file for style resource */
resourceFile=g_build_filename(priv->themePath, *resource, NULL);
/* Try to load style resource */
if(!xfdashboard_theme_css_add_file(priv->styling, resourceFile, counter, &error))
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(resources) g_strfreev(resources);
if(resourceFile) g_free(resourceFile);
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Release allocated resources */
if(resourceFile) g_free(resourceFile);
/* Continue with next entry */
resource++;
counter++;
}
g_strfreev(resources);
/* Create XML parser and load layout resources */
resources=g_key_file_get_string_list(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Layout",
NULL,
&error);
if(!resources)
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
resource=resources;
while(*resource)
{
/* Get path and file for style resource */
resourceFile=g_build_filename(priv->themePath, *resource, NULL);
/* Try to load style resource */
if(!xfdashboard_theme_layout_add_file(priv->layout, resourceFile, &error))
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(resources) g_strfreev(resources);
if(resourceFile) g_free(resourceFile);
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Release allocated resources */
if(resourceFile) g_free(resourceFile);
/* Continue with next entry */
resource++;
counter++;
}
g_strfreev(resources);
/* Create XML parser and load effect resources which are optional */
if(g_key_file_has_key(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Effects",
NULL))
{
resources=g_key_file_get_string_list(themeKeyFile,
XFDASHBOARD_THEME_GROUP,
"Effects",
NULL,
&error);
if(!resources)
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
resource=resources;
while(*resource)
{
/* Get path and file for style resource */
resourceFile=g_build_filename(priv->themePath, *resource, NULL);
/* Try to load style resource */
if(!xfdashboard_theme_effects_add_file(priv->effects, resourceFile, &error))
{
/* Set error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(resources) g_strfreev(resources);
if(resourceFile) g_free(resourceFile);
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return FALSE to indicate error */
return(FALSE);
}
/* Release allocated resources */
if(resourceFile) g_free(resourceFile);
/* Continue with next entry */
resource++;
counter++;
}
g_strfreev(resources);
}
/* Release allocated resources */
if(themeKeyFile) g_key_file_free(themeKeyFile);
/* Return TRUE to indicate success */
return(TRUE);
}
/* Get theme effects */
XfdashboardThemeEffects* xfdashboard_theme_get_effects(XfdashboardTheme *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), NULL);
return(self->priv->effects);
}
/* Get theme layout */
XfdashboardThemeLayout* xfdashboard_theme_get_layout(XfdashboardTheme *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), NULL);
return(self->priv->layout);
}
/* Get theme CSS */
XfdashboardThemeCSS* xfdashboard_theme_get_css(XfdashboardTheme *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), NULL);
return(self->priv->styling);
}
/* Get comment of theme */
const gchar* xfdashboard_theme_get_comment(XfdashboardTheme *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), NULL);
return(self->priv->themeComment);
}
/* Get display name of theme */
const gchar* xfdashboard_theme_get_display_name(XfdashboardTheme *self)
{
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), NULL);
return(self->priv->themeDisplayName);
}
/* Lookup path for named theme.
* Caller must free returned path with g_free if not needed anymore.
*/
static gchar* _xfdashboard_theme_lookup_path_for_theme(XfdashboardTheme *self,
const gchar *inThemeName)
{
gchar *themeFile;
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), FALSE);
g_return_val_if_fail(inThemeName!=NULL && *inThemeName!=0, FALSE);
themeFile=NULL;
/* Search theme file in given environment variable if set.
* This makes development easier when theme changes are needed
* without changing theme or changing symlinks in any of below
* searched paths.
*/
if(!themeFile)
{
const gchar *envPath;
envPath=g_getenv("XFDASHBOARD_THEME_PATH");
if(envPath)
{
themeFile=g_build_filename(envPath, XFDASHBOARD_THEME_FILE, NULL);
g_debug("Trying theme file: %s", themeFile);
if(!g_file_test(themeFile, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
{
g_free(themeFile);
themeFile=NULL;
}
}
}
/* If file not found search in user's config directory */
if(!themeFile)
{
themeFile=g_build_filename(g_get_user_data_dir(), "themes", inThemeName, XFDASHBOARD_THEME_SUBPATH, XFDASHBOARD_THEME_FILE, NULL);
g_debug("Trying theme file: %s", themeFile);
if(!g_file_test(themeFile, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
{
g_free(themeFile);
themeFile=NULL;
}
}
/* If file not found search in user's home directory */
if(!themeFile)
{
const gchar *homeDirectory;
homeDirectory=g_get_home_dir();
if(homeDirectory)
{
themeFile=g_build_filename(homeDirectory, ".themes", inThemeName, XFDASHBOARD_THEME_SUBPATH, XFDASHBOARD_THEME_FILE, NULL);
g_debug("Trying theme file: %s", themeFile);
if(!g_file_test(themeFile, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
{
g_free(themeFile);
themeFile=NULL;
}
}
}
/* If file not found search in system-wide paths */
if(!themeFile)
{
themeFile=g_build_filename(PACKAGE_DATADIR, "themes", inThemeName, XFDASHBOARD_THEME_SUBPATH, XFDASHBOARD_THEME_FILE, NULL);
g_debug("Trying theme file: %s", themeFile);
if(!g_file_test(themeFile, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
{
g_free(themeFile);
themeFile=NULL;
}
}
/* If file was found get path contaning file and return it */
if(themeFile)
{
gchar *themePath;
themePath=g_path_get_dirname(themeFile);
g_free(themeFile);
return(themePath);
}
/* If we get here theme was not found so return NULL */
return(NULL);
}
/* Lookup named theme and load resources */
gboolean xfdashboard_theme_load(XfdashboardTheme *self,
const gchar *inThemeName,
GError **outError)
{
XfdashboardThemePrivate *priv;
GError *error;
gchar *themePath;
g_return_val_if_fail(XFDASHBOARD_IS_THEME(self), FALSE);
g_return_val_if_fail(inThemeName!=NULL && *inThemeName!=0, FALSE);
g_return_val_if_fail(outError==NULL || *outError==NULL, FALSE);
priv=self->priv;
error=NULL;
/* Freeze notifications about property changes and collect them */
g_object_freeze_notify(G_OBJECT(self));
/* Check if a theme was already loaded */
if(priv->themeName)
{
g_set_error(outError,
XFDASHBOARD_THEME_ERROR,
XFDASHBOARD_THEME_ERROR_ALREADY_LOADED,
_("Theme '%s' requested but '%s' was already loaded"),
inThemeName,
priv->themeName);
/* Thaw notifications and send them now */
g_object_thaw_notify(G_OBJECT(self));
return(FALSE);
}
/* Lookup path of theme by lookup at all possible paths for theme file */
themePath=_xfdashboard_theme_lookup_path_for_theme(self, inThemeName);
if(!themePath)
{
g_set_error(outError,
XFDASHBOARD_THEME_ERROR,
XFDASHBOARD_THEME_ERROR_THEME_NOT_FOUND,
_("Theme '%s' not found"),
inThemeName);
/* Thaw notifications and send them now */
g_object_thaw_notify(G_OBJECT(self));
/* Return FALSE to indicate error */
return(FALSE);
}
/* Load theme key file */
if(!_xfdashboard_theme_load_resources(self, themePath, &error))
{
/* Set returned error */
g_propagate_error(outError, error);
/* Release allocated resources */
if(themePath) g_free(themePath);
/* Thaw notifications and send them now */
g_object_thaw_notify(G_OBJECT(self));
/* Return FALSE to indicate error */
return(FALSE);
}
/* Set up internal variables because theme was loaded successfully
* and notify about property changes
*/
priv->themePath=g_strdup(themePath);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_PATH]);
priv->themeName=g_strdup(inThemeName);
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardThemeProperties[PROP_NAME]);
/* Release allocated resources */
if(themePath) g_free(themePath);
/* Thaw notifications and send them now */
g_object_thaw_notify(G_OBJECT(self));
/* If we found named themed and could load all resources successfully */
return(TRUE);
}
