mirror of
https://github.com/brl/mutter.git
synced 2024-12-28 22:02:14 +00:00
fbe225d179
* 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.
468 lines
11 KiB
C
468 lines
11 KiB
C
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <glib.h>
|
|
#include <gmodule.h>
|
|
|
|
#include "clutter-actor.h"
|
|
#include "clutter-behaviour.h"
|
|
#include "clutter-container.h"
|
|
|
|
#include "clutter-script.h"
|
|
#include "clutter-script-private.h"
|
|
#include "clutter-scriptable.h"
|
|
|
|
#include "clutter-debug.h"
|
|
#include "clutter-private.h"
|
|
|
|
GType
|
|
clutter_script_get_type_from_symbol (const gchar *symbol)
|
|
{
|
|
static GModule *module = NULL;
|
|
GTypeGetFunc func;
|
|
GType gtype = G_TYPE_INVALID;
|
|
|
|
if (!module)
|
|
module = g_module_open (NULL, G_MODULE_BIND_LAZY);
|
|
|
|
if (g_module_symbol (module, symbol, (gpointer)&func))
|
|
gtype = func ();
|
|
|
|
return gtype;
|
|
}
|
|
|
|
GType
|
|
clutter_script_get_type_from_class (const gchar *name)
|
|
{
|
|
static GModule *module = NULL;
|
|
GString *symbol_name = g_string_sized_new (64);
|
|
GType gtype = G_TYPE_INVALID;
|
|
GTypeGetFunc func;
|
|
gchar *symbol;
|
|
gint i;
|
|
|
|
if (G_UNLIKELY (!module))
|
|
module = g_module_open (NULL, G_MODULE_BIND_LAZY);
|
|
|
|
for (i = 0; name[i] != '\0'; i++)
|
|
{
|
|
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])))
|
|
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);
|
|
|
|
if (g_module_symbol (module, symbol, (gpointer)&func))
|
|
{
|
|
CLUTTER_NOTE (SCRIPT, "Type function: %s", symbol);
|
|
gtype = func ();
|
|
}
|
|
|
|
g_free (symbol);
|
|
|
|
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,
|
|
gint *enum_value)
|
|
{
|
|
GEnumClass *eclass;
|
|
GEnumValue *ev;
|
|
gchar *endptr;
|
|
gint value;
|
|
gboolean retval = TRUE;
|
|
|
|
g_return_val_if_fail (G_TYPE_IS_ENUM (type), 0);
|
|
g_return_val_if_fail (string != NULL, 0);
|
|
|
|
value = strtoul (string, &endptr, 0);
|
|
if (endptr != string) /* parsed a number */
|
|
*enum_value = value;
|
|
else
|
|
{
|
|
eclass = g_type_class_ref (type);
|
|
ev = g_enum_get_value_by_name (eclass, string);
|
|
if (!ev)
|
|
ev = g_enum_get_value_by_nick (eclass, string);
|
|
|
|
if (ev)
|
|
*enum_value = ev->value;
|
|
else
|
|
retval = FALSE;
|
|
|
|
g_type_class_unref (eclass);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
gboolean
|
|
clutter_script_flags_from_string (GType type,
|
|
const gchar *string,
|
|
gint *flags_value)
|
|
{
|
|
gchar *endptr, *prevptr;
|
|
guint i, j, ret, value;
|
|
gchar *flagstr;
|
|
GFlagsValue *fv;
|
|
const gchar *flag;
|
|
|
|
g_return_val_if_fail (G_TYPE_IS_FLAGS (type), 0);
|
|
g_return_val_if_fail (string != 0, 0);
|
|
|
|
ret = TRUE;
|
|
|
|
value = strtoul (string, &endptr, 0);
|
|
if (endptr != string) /* parsed a number */
|
|
*flags_value = value;
|
|
else
|
|
{
|
|
GFlagsClass *fclass;
|
|
|
|
fclass = g_type_class_ref (type);
|
|
|
|
flagstr = g_strdup (string);
|
|
for (value = i = j = 0; ; i++)
|
|
{
|
|
gboolean eos = (flagstr[i] == '\0') ? TRUE : FALSE;
|
|
|
|
if (!eos && flagstr[i] != '|')
|
|
continue;
|
|
|
|
flag = &flagstr[j];
|
|
endptr = &flagstr[i];
|
|
|
|
if (!eos)
|
|
{
|
|
flagstr[i++] = '\0';
|
|
j = i;
|
|
}
|
|
|
|
/* trim spaces */
|
|
for (;;)
|
|
{
|
|
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)
|
|
fv = g_flags_get_value_by_nick (fclass, flag);
|
|
|
|
if (fv)
|
|
value |= fv->value;
|
|
else
|
|
{
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (eos)
|
|
{
|
|
*flags_value = value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
g_free (flagstr);
|
|
|
|
g_type_class_unref (fclass);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
parse_knot_from_array (JsonArray *array,
|
|
ClutterKnot *knot)
|
|
{
|
|
JsonNode *val;
|
|
|
|
if (json_array_get_length (array) < 2)
|
|
return FALSE;
|
|
|
|
val = json_array_get_element (array, 0);
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
knot->x = json_node_get_int (val);
|
|
|
|
val = json_array_get_element (array, 1);
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
knot->y = json_node_get_int (val);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
parse_knot_from_object (JsonObject *object,
|
|
ClutterKnot *knot)
|
|
{
|
|
JsonNode *val;
|
|
|
|
if (json_object_get_size (object) < 2)
|
|
return FALSE;
|
|
|
|
val = json_object_get_member (object, "x");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
knot->x = json_node_get_int (val);
|
|
|
|
val = json_object_get_member (object, "y");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
knot->y = json_node_get_int (val);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
clutter_script_parse_knot (ClutterScript *script,
|
|
JsonNode *node,
|
|
ClutterKnot *knot)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_SCRIPT (script), FALSE);
|
|
g_return_val_if_fail (node != NULL, FALSE);
|
|
g_return_val_if_fail (knot != NULL, FALSE);
|
|
|
|
switch (JSON_NODE_TYPE (node))
|
|
{
|
|
case JSON_NODE_ARRAY:
|
|
return parse_knot_from_array (json_node_get_array (node), knot);
|
|
|
|
case JSON_NODE_OBJECT:
|
|
return parse_knot_from_object (json_node_get_object (node), knot);
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
parse_geometry_from_array (JsonArray *array,
|
|
ClutterGeometry *geometry)
|
|
{
|
|
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)
|
|
geometry->x = json_node_get_int (val);
|
|
|
|
val = json_array_get_element (array, 1);
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->y = json_node_get_int (val);
|
|
|
|
val = json_array_get_element (array, 2);
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->width = json_node_get_int (val);
|
|
|
|
val = json_array_get_element (array, 3);
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->height = json_node_get_int (val);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
parse_geometry_from_object (JsonObject *object,
|
|
ClutterGeometry *geometry)
|
|
{
|
|
JsonNode *val;
|
|
|
|
if (json_object_get_size (object) < 4)
|
|
return FALSE;
|
|
|
|
val = json_object_get_member (object, "x");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->x = json_node_get_int (val);
|
|
|
|
val = json_object_get_member (object, "y");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->y = json_node_get_int (val);
|
|
|
|
val = json_object_get_member (object, "width");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->width = json_node_get_int (val);
|
|
|
|
val = json_object_get_member (object, "height");
|
|
if (JSON_NODE_TYPE (val) == JSON_NODE_VALUE)
|
|
geometry->height = json_node_get_int (val);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
clutter_script_parse_geometry (ClutterScript *script,
|
|
JsonNode *node,
|
|
ClutterGeometry *geometry)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_SCRIPT (script), FALSE);
|
|
g_return_val_if_fail (node != NULL, FALSE);
|
|
g_return_val_if_fail (geometry != NULL, FALSE);
|
|
|
|
switch (JSON_NODE_TYPE (node))
|
|
{
|
|
case JSON_NODE_ARRAY:
|
|
return parse_geometry_from_array (json_node_get_array (node), geometry);
|
|
|
|
case JSON_NODE_OBJECT:
|
|
return parse_geometry_from_object (json_node_get_object (node), geometry);
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
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;
|
|
}
|