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2008-08-04 Emmanuele Bassi <ebassi@openedhand.com>

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* clutter/clutter-script-parser.c:
	* clutter/clutter-script-private.h: Clean up the code; add a
	conversion function for reading a ClutterColor out of a
	JSON object or array definition.

	* clutter/clutter-script.c: Clean up the code; document properly
	how we translate from type name to type function.
This commit is contained in:
Emmanuele Bassi
2008-08-04 16:21:27 +00:00
parent 2e67125cc9
commit fbe225d179
5 changed files with 375 additions and 107 deletions
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310
clutter/clutter-script.c
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@@ -86,7 +86,7 @@
* "angle-end" : 360.0,
* "axis" : "z-axis",
* "alpha" : {
* "timeline" : { "num-frames" : 240, "fps" : 60, "loop" : true },
* "timeline" : { "duration" : 4000, "fps" : 60, "loop" : true },
* "function" : "sine"
* }
* }
@@ -233,31 +233,34 @@ warn_missing_attribute (ClutterScript *script,
}
}
#if 0
static void
warn_invalid_value (ClutterScript *script,
const gchar *attribute,
const gchar *expected,
JsonNode *node)
{
ClutterScriptPrivate *priv = script->priv;
if (G_LIKELY (node))
{
g_warning ("%s:%d: invalid value of type `%s' for attribute `%s'",
g_warning ("%s:%d: invalid value of type `%s' for attribute `%s':"
"a value of type `%s' is expected",
priv->is_filename ? priv->filename : "<input>",
json_parser_get_current_line (priv->parser),
json_node_type_name (node),
attribute);
attribute,
expected);
}
else
{
g_warning ("%s:%d: invalid value for attribute `%s'",
g_warning ("%s:%d: invalid value for attribute `%s':"
"a value of type `%s' is expected",
priv->is_filename ? priv->filename : "<input>",
json_parser_get_current_line (priv->parser),
attribute);
attribute,
expected);
}
}
#endif
static const gchar *
get_id_from_node (JsonNode *node)
@@ -316,8 +319,9 @@ parse_children (ObjectInfo *oinfo,
}
static GList *
parse_signals (ObjectInfo *oinfo,
JsonNode *node)
parse_signals (ClutterScript *script,
ObjectInfo *oinfo,
JsonNode *node)
{
JsonArray *array;
GList *retval;
@@ -325,7 +329,7 @@ parse_signals (ObjectInfo *oinfo,
if (JSON_NODE_TYPE (node) != JSON_NODE_ARRAY)
{
g_warning ("Expecting an array for signal definitions");
warn_invalid_value (script, "signals", "Array", node);
return NULL;
}
@@ -345,7 +349,7 @@ parse_signals (ObjectInfo *oinfo,
if (JSON_NODE_TYPE (val) != JSON_NODE_OBJECT)
{
g_warning ("Expecting an array of objects");
warn_invalid_value (script, "signals array", "Object", node);
continue;
}
@@ -354,7 +358,7 @@ parse_signals (ObjectInfo *oinfo,
/* mandatory: "name" */
if (!json_object_has_member (object, "name"))
{
g_warning ("Missing `name' attribute in signal definition");
warn_missing_attribute (script, NULL, "name");
continue;
}
else
@@ -365,7 +369,7 @@ parse_signals (ObjectInfo *oinfo,
name = json_node_get_string (val);
else
{
g_warning ("Signal `name' member must be a string");
warn_invalid_value (script, "name", "string", val);
continue;
}
}
@@ -373,7 +377,7 @@ parse_signals (ObjectInfo *oinfo,
/* mandatory: "handler" */
if (!json_object_has_member (object, "handler"))
{
g_warning ("Missing `handler' attribute in signal definition");
warn_missing_attribute (script, NULL, "handler");
continue;
}
else
@@ -384,7 +388,7 @@ parse_signals (ObjectInfo *oinfo,
handler = json_node_get_string (val);
else
{
g_warning ("Signal `handler' member must be a string");
warn_invalid_value (script, "handler", "string", val);
continue;
}
}
@@ -511,20 +515,69 @@ construct_timeline (ClutterScript *script,
static const struct
{
const gchar *name;
const gchar *short_name;
ClutterAlphaFunc symbol;
} clutter_alphas[] = {
{ "clutter_ramp_inc_func", CLUTTER_ALPHA_RAMP_INC },
{ "clutter_ramp_dec_func", CLUTTER_ALPHA_RAMP_DEC },
{ "clutter_ramp_func", CLUTTER_ALPHA_RAMP },
{ "clutter_sine_inc_func", CLUTTER_ALPHA_SINE_INC },
{ "clutter_sine_dec_func", CLUTTER_ALPHA_SINE_DEC },
{ "clutter_sine_half_func", CLUTTER_ALPHA_SINE_HALF },
{ "clutter_sine_func", CLUTTER_ALPHA_SINE },
{ "clutter_square_func", CLUTTER_ALPHA_SQUARE },
{ "clutter_smoothstep_inc_func", CLUTTER_ALPHA_SMOOTHSTEP_INC },
{ "clutter_smoothstep_dec_func", CLUTTER_ALPHA_SMOOTHSTEP_DEC },
{ "clutter_exp_inc_func", CLUTTER_ALPHA_EXP_INC },
{ "clutter_exp_dec_func", CLUTTER_ALPHA_EXP_DEC }
{
"clutter_ramp_inc_func",
"ramp-inc",
CLUTTER_ALPHA_RAMP_INC
},
{
"clutter_ramp_dec_func",
"ramp-dec",
CLUTTER_ALPHA_RAMP_DEC
},
{
"clutter_ramp_func",
"ramp",
CLUTTER_ALPHA_RAMP
},
{
"clutter_sine_inc_func",
"sine-inc",
CLUTTER_ALPHA_SINE_INC
},
{
"clutter_sine_dec_func",
"sine-dec",
CLUTTER_ALPHA_SINE_DEC
},
{
"clutter_sine_half_func",
"sine-half",
CLUTTER_ALPHA_SINE_HALF
},
{
"clutter_sine_func",
"sine",
CLUTTER_ALPHA_SINE
},
{
"clutter_square_func",
"square",
CLUTTER_ALPHA_SQUARE
},
{
"clutter_smoothstep_inc_func",
"smoothstep-inc",
CLUTTER_ALPHA_SMOOTHSTEP_INC
},
{
"clutter_smoothstep_dec_func",
"smoothstep-dec",
CLUTTER_ALPHA_SMOOTHSTEP_DEC
},
{
"clutter_exp_inc_func",
"exp-inc",
CLUTTER_ALPHA_EXP_INC
},
{
"clutter_exp_dec_func",
"exp-dec",
CLUTTER_ALPHA_EXP_DEC
}
};
static const gint n_clutter_alphas = G_N_ELEMENTS (clutter_alphas);
@@ -534,14 +587,13 @@ resolve_alpha_func (const gchar *name)
{
static GModule *module = NULL;
ClutterAlphaFunc func;
GString *symbol_name;
gchar c, *symbol;
gint i;
CLUTTER_NOTE (SCRIPT, "Looking up `%s' alpha function", name);
for (i = 0; i < n_clutter_alphas; i++)
if (strcmp (name, clutter_alphas[i].name) == 0)
if (strcmp (name, clutter_alphas[i].name) == 0 ||
strcmp (name, clutter_alphas[i].short_name) == 0)
{
CLUTTER_NOTE (SCRIPT, "Found `%s' alpha function in the whitelist",
name);
@@ -558,44 +610,6 @@ resolve_alpha_func (const gchar *name)
return func;
}
symbol_name = g_string_new ("");
g_string_append (symbol_name, "clutter_");
for (i = 0; name[i] != '\0'; i++)
{
c = name[i];
if (name[i] == '-')
g_string_append_c (symbol_name, '_');
else
g_string_append_c (symbol_name, g_ascii_tolower (name[i]));
}
g_string_append (symbol_name, "_func");
symbol = g_string_free (symbol_name, FALSE);
CLUTTER_NOTE (SCRIPT, "Looking `%s' alpha function", symbol);
for (i = 0; i < n_clutter_alphas; i++)
if (strcmp (symbol, clutter_alphas[i].name) == 0)
{
CLUTTER_NOTE (SCRIPT,
"Found `%s' (%s) alpha function in the whitelist",
name, symbol);
g_free (symbol);
return clutter_alphas[i].symbol;
}
if (g_module_symbol (module, symbol, (gpointer)&func))
{
CLUTTER_NOTE (SCRIPT,
"Found `%s' (%s) alpha function in the symbols table",
name, symbol);
g_free (symbol);
return func;
}
g_free (symbol);
return NULL;
}
@@ -738,7 +752,7 @@ json_object_end (JsonParser *parser,
if (json_object_has_member (object, "signals"))
{
val = json_object_get_member (object, "signals");
oinfo->signals = parse_signals (oinfo, val);
oinfo->signals = parse_signals (script, oinfo, val);
json_object_remove_member (object, "signals");
}
@@ -830,6 +844,54 @@ clutter_script_parse_node (ClutterScript *script,
return TRUE;
}
}
else if (G_VALUE_HOLDS (value, CLUTTER_TYPE_KNOT))
{
ClutterKnot knot = { 0, };
/* knot := { "x" : (int), "y" : (int) } */
if (clutter_script_parse_knot (script, node, &knot))
{
g_value_set_boxed (value, &knot);
return TRUE;
}
}
else if (G_VALUE_HOLDS (value, CLUTTER_TYPE_GEOMETRY))
{
ClutterGeometry geom = { 0, };
/* geometry := {
* "x" : (int),
* "y" : (int),
* "width" : (int),
* "height" : (int)
* }
*/
if (clutter_script_parse_geometry (script, node, &geom))
{
g_value_set_boxed (value, &geom);
return TRUE;
}
}
else if (G_VALUE_HOLDS (value, CLUTTER_TYPE_COLOR))
{
ClutterColor color = { 0, };
/* color := {
* "red" : (int),
* "green" : (int),
* "blue" : (int),
* "alpha" : (int)
* }
*/
if (clutter_script_parse_color (script, node, &color))
{
g_value_set_boxed (value, &color);
return TRUE;
}
}
}
return FALSE;
@@ -844,6 +906,8 @@ clutter_script_parse_node (ClutterScript *script,
{
ClutterKnot knot = { 0, };
/* knot := [ (int), (int) ] */
if (clutter_script_parse_knot (script, node, &knot))
{
g_value_set_boxed (value, &knot);
@@ -854,12 +918,51 @@ clutter_script_parse_node (ClutterScript *script,
{
ClutterGeometry geom = { 0, };
/* geometry := [ (int), (int), (int), (int) ] */
if (clutter_script_parse_geometry (script, node, &geom))
{
g_value_set_boxed (value, &geom);
return TRUE;
}
}
else if (G_VALUE_HOLDS (value, CLUTTER_TYPE_COLOR))
{
ClutterColor color = { 0, };
/* color := [ (int), (int), (int), (int) ] */
if (clutter_script_parse_color (script, node, &color))
{
g_value_set_boxed (value, &color);
return TRUE;
}
}
else if (G_VALUE_HOLDS (value, G_TYPE_STRV))
{
JsonArray *array = json_node_get_array (node);
guint i, array_len = json_array_get_length (array);
GPtrArray *str_array = g_ptr_array_sized_new (array_len);
/* strv := [ (str), (str), ... ] */
for (i = 0; i < array_len; i++)
{
JsonNode *val = json_array_get_element (array, i);
if (JSON_NODE_TYPE (val) != JSON_NODE_VALUE &&
json_node_get_string (val) == NULL)
continue;
g_ptr_array_add (str_array,
(gpointer) json_node_get_string (val));
}
g_value_set_boxed (value, str_array->pdata);
g_ptr_array_free (str_array, TRUE);
return TRUE;
}
}
return FALSE;
@@ -1240,6 +1343,10 @@ add_children (ClutterScript *script,
oinfo->children = unresolved;
}
/* top-level classes: these classes are the roots of the
* hiearchy; some of them must be unreferenced, whilst
* others are owned by other instances
*/
static const struct
{
const gchar *type_name;
@@ -1397,6 +1504,17 @@ clutter_script_construct_object (ClutterScript *script,
}
}
/* XXX - at the moment, we are adding the children (and constructing
* the scenegraph) after we applied all the properties of an object;
* this usually ensures that an object is fully constructed before
* it is added to its parent. unfortunately, this also means that
* children cannot reference the parent's state inside their own
* definition.
*
* see bug:
* http://bugzilla.openedhand.com/show_bug.cgi?id=1042
*/
if (oinfo->children && CLUTTER_IS_CONTAINER (object))
add_children (script, CLUTTER_CONTAINER (object), oinfo);
@@ -1994,6 +2112,7 @@ typedef struct {
gpointer data;
} ConnectData;
/* default signal connection code */
static void
clutter_script_default_connect (ClutterScript *script,
GObject *object,
@@ -2003,30 +2122,34 @@ clutter_script_default_connect (ClutterScript *script,
GConnectFlags flags,
gpointer user_data)
{
ConnectData *cd = user_data;
ConnectData *data = user_data;
GCallback func;
if (!g_module_symbol (cd->module, signal_handler, (gpointer)&func))
if (!g_module_symbol (data->module, signal_handler, (gpointer)&func))
{
g_warning ("Could not find signal handler '%s'", signal_handler);
g_warning ("Could not find a signal handler '%s' for signal '%s::%s'",
signal_handler,
connect_object ? G_OBJECT_TYPE_NAME (connect_object)
: G_OBJECT_TYPE_NAME (object),
signal_name);
return;
}
CLUTTER_NOTE (SCRIPT,
"connecting `%s::%s to %s (a:%d,s:%d,o:%s)",
(connect_object ? g_type_name (G_OBJECT_TYPE (connect_object))
: g_type_name (G_OBJECT_TYPE (object))),
"connecting %s::%s to %s (afetr:%s, swapped:%s, object:%s)",
(connect_object ? G_OBJECT_TYPE_NAME (connect_object)
: G_OBJECT_TYPE_NAME (object)),
signal_name,
signal_handler,
(flags & G_CONNECT_AFTER),
(flags & G_CONNECT_SWAPPED),
connect_object ? g_type_name (G_OBJECT_TYPE (connect_object))
: "<none>");
(flags & G_CONNECT_AFTER) ? "true" : "false",
(flags & G_CONNECT_SWAPPED) ? "true" : "false",
(connect_object ? G_OBJECT_TYPE_NAME (connect_object)
: "<none>"));
if (connect_object)
g_signal_connect_object (object, signal_name, func, connect_object, flags);
else
g_signal_connect_data (object, signal_name, func, cd->data, NULL, flags);
g_signal_connect_data (object, signal_name, func, data->data, NULL, flags);
}
/**
@@ -2057,7 +2180,11 @@ clutter_script_connect_signals (ClutterScript *script,
g_return_if_fail (CLUTTER_IS_SCRIPT (script));
if (!g_module_supported ())
g_critical ("clutter_script_connect_signals() requires working GModule");
{
g_critical ("clutter_script_connect_signals() requires a working "
"GModule support from GLib");
return;
}
cd = g_new (ConnectData, 1);
cd->module = g_module_open (NULL, G_MODULE_BIND_LAZY);
@@ -2096,12 +2223,10 @@ connect_each_object (gpointer key,
for (l = oinfo->signals; l != NULL; l = l->next)
{
SignalInfo *sinfo = l->data;
GObject *connect_object;
GObject *connect_object = NULL;
if (sinfo->object)
connect_object = clutter_script_get_object (script, sinfo->object);
else
connect_object = NULL;
if (sinfo->object && !connect_object)
unresolved = g_list_prepend (unresolved, sinfo);
@@ -2118,6 +2243,10 @@ connect_each_object (gpointer key,
}
}
/* keep the unresolved signal handlers around, in case
* clutter_script_connect_signals() is called multiple
* times (e.g. after a UI definition merge)
*/
g_list_free (oinfo->signals);
oinfo->signals = unresolved;
}
@@ -2131,9 +2260,12 @@ connect_each_object (gpointer key,
* Connects all the signals defined into a UI definition file to their
* handlers.
*
* This function is similar to clutter_script_connect_signals() but it
* does not require GModule to be supported. It is mainly targeted at
* interpreted languages for controlling the signal connection.
* This function allows to control how the signal handlers are
* going to be connected to their respective signals. It is meant
* primarily for language bindings to allow resolving the function
* names using the native API.
*
* Applications should use clutter_script_connect_signals().
*
* Since: 0.6
*/
@@ -2214,7 +2346,9 @@ clutter_script_add_search_paths (ClutterScript *script,
g_strv_length (new_paths));
priv->search_paths = new_paths;
g_strfreev (old_paths);
if (old_paths)
g_strfreev (old_paths);
}
/**