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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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154
clutter/clutter-script-parser.c
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@ -39,27 +39,47 @@ GType
clutter_script_get_type_from_class (const gchar *name)
{
static GModule *module = NULL;
GTypeGetFunc func;
GString *symbol_name = g_string_new ("");
char c, *symbol;
int i;
GString *symbol_name = g_string_sized_new (64);
GType gtype = G_TYPE_INVALID;
GTypeGetFunc func;
gchar *symbol;
gint i;
if (!module)
module = g_module_open (NULL, 0);
if (G_UNLIKELY (!module))
module = g_module_open (NULL, G_MODULE_BIND_LAZY);
for (i = 0; name[i] != '\0'; i++)
{
c = name[i];
/* skip if uppercase, first or previous is uppercase */
gchar c = name[i];
/* the standard naming policy for GObject-based libraries
* is:
*
* NAME := INITIAL_WORD WORD+
* INITIAL_WORD := [A-Z][a-z0-9]*
* WORD := [A-Z]{1,2}[a-z0-9]+ | [A-Z]{2,}
*
* for instance:
*
* GString -> g_string
* GtkCTree -> gtk_ctree
* ClutterX11TexturePixmap -> clutter_x11_texture_pixmap
*
* see:
*
* http://mail.gnome.org/archives/gtk-devel-list/2007-June/msg00022.html
*/
if ((c == g_ascii_toupper (c) &&
i > 0 && name[i-1] != g_ascii_toupper (name[i-1])) ||
(i > 2 && name[i] == g_ascii_toupper (name[i]) &&
name[i-1] == g_ascii_toupper (name[i-1]) &&
name[i-2] == g_ascii_toupper (name[i-2])))
i > 0 && name[i - 1] != g_ascii_toupper (name[i - 1])) ||
(i > 2 && name[i] == g_ascii_toupper (name[i]) &&
name[i - 1] == g_ascii_toupper (name[i - 1]) &&
name[i - 2] == g_ascii_toupper (name[i - 2])))
g_string_append_c (symbol_name, '_');
g_string_append_c (symbol_name, g_ascii_tolower (c));
}
g_string_append (symbol_name, "_get_type");
symbol = g_string_free (symbol_name, FALSE);
@ -75,6 +95,20 @@ clutter_script_get_type_from_class (const gchar *name)
return gtype;
}
/*
* clutter_script_enum_from_string:
* @type: a #GType for an enumeration type
* @string: the enumeration value as a string
* @enum_value: return location for the enumeration value as an integer
*
* Converts an enumeration value inside @string into a numeric
* value and places it into @enum_value.
*
* The enumeration value can be an integer, the enumeration nick
* or the enumeration name, as part of the #GEnumValue structure.
*
* Return value: %TRUE if the conversion was successfull.
*/
gboolean
clutter_script_enum_from_string (GType type,
const gchar *string,
@ -115,14 +149,11 @@ clutter_script_flags_from_string (GType type,
const gchar *string,
gint *flags_value)
{
GFlagsClass *fclass;
gchar *endptr, *prevptr;
guint i, j, ret, value;
gchar *flagstr;
GFlagsValue *fv;
const gchar *flag;
gunichar ch;
gboolean eos;
g_return_val_if_fail (G_TYPE_IS_FLAGS (type), 0);
g_return_val_if_fail (string != 0, 0);
@ -134,13 +165,14 @@ clutter_script_flags_from_string (GType type,
*flags_value = value;
else
{
GFlagsClass *fclass;
fclass = g_type_class_ref (type);
flagstr = g_strdup (string);
for (value = i = j = 0; ; i++)
{
eos = flagstr[i] == '\0';
gboolean eos = (flagstr[i] == '\0') ? TRUE : FALSE;
if (!eos && flagstr[i] != '|')
continue;
@ -157,24 +189,30 @@ clutter_script_flags_from_string (GType type,
/* trim spaces */
for (;;)
{
ch = g_utf8_get_char (flag);
gunichar ch = g_utf8_get_char (flag);
if (!g_unichar_isspace (ch))
break;
flag = g_utf8_next_char (flag);
}
while (endptr > flag)
{
gunichar ch;
prevptr = g_utf8_prev_char (endptr);
ch = g_utf8_get_char (prevptr);
if (!g_unichar_isspace (ch))
break;
endptr = prevptr;
}
if (endptr > flag)
{
*endptr = '\0';
fv = g_flags_get_value_by_name (fclass, flag);
if (!fv)
@ -347,3 +385,83 @@ clutter_script_parse_geometry (ClutterScript *script,
return FALSE;
}
static gboolean
parse_color_from_array (JsonArray *array,
ClutterColor *color)
{
JsonNode *val;
if (json_array_get_length (array) < 4)
return FALSE;
val = json_array_get_element (array, 0);
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->red = CLAMP (json_node_get_int (val), 0, 255);
val = json_array_get_element (array, 1);
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->green = CLAMP (json_node_get_int (val), 0, 255);
val = json_array_get_element (array, 2);
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->blue = CLAMP (json_node_get_int (val), 0, 255);
val = json_array_get_element (array, 3);
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->alpha = CLAMP (json_node_get_int (val), 0, 255);
return TRUE;
}
static gboolean
parse_color_from_object (JsonObject *object,
ClutterColor *color)
{
JsonNode *val;
if (json_object_get_size (object) < 4)
return FALSE;
val = json_object_get_member (object, "red");
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->red = CLAMP (json_node_get_int (val), 0, 255);
val = json_object_get_member (object, "green");
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->green = CLAMP (json_node_get_int (val), 0, 255);
val = json_object_get_member (object, "blue");
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->blue = CLAMP (json_node_get_int (val), 0, 255);
val = json_object_get_member (object, "alpha");
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
color->alpha = CLAMP (json_node_get_int (val), 0, 255);
return TRUE;
}
gboolean
clutter_script_parse_color (ClutterScript *script,
JsonNode *node,
ClutterColor *color)
{
g_return_val_if_fail (CLUTTER_IS_SCRIPT (script), FALSE);
g_return_val_if_fail (node != NULL, FALSE);
g_return_val_if_fail (color != NULL, FALSE);
switch (JSON_NODE_TYPE (node))
{
case JSON_NODE_ARRAY:
return parse_color_from_array (json_node_get_array (node), color);
case JSON_NODE_OBJECT:
return parse_color_from_object (json_node_get_object (node), color);
default:
break;
}
return FALSE;
}