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medit/moo/mooutils/mooutils-gobject.c

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/*
* mooutils-gobject.c
*
* Copyright (C) 2004-2006 by Yevgen Muntyan <muntyan@math.tamu.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* See COPYING file that comes with this distribution.
*/
#include "mooutils/mooutils-gobject.h"
#include "mooutils/mooclosure.h"
#include <gobject/gvaluecollector.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
/*****************************************************************************/
/* GType type
*/
#define MOO_GTYPE_PEEK(val_) (val_)->data[0].v_pointer
static void
moo_gtype_value_init (G_GNUC_UNUSED GValue *value)
{
}
static void
moo_gtype_value_copy (const GValue *src,
GValue *dest)
{
MOO_GTYPE_PEEK(dest) = MOO_GTYPE_PEEK(src);
}
static char*
moo_gtype_collect_value (GValue *value,
G_GNUC_UNUSED guint n_collect_values,
GTypeCValue *collect_values,
G_GNUC_UNUSED guint collect_flags)
{
MOO_GTYPE_PEEK(value) = collect_values->v_pointer;
return NULL;
}
static char*
moo_gtype_lcopy_value (const GValue *value,
G_GNUC_UNUSED guint n_collect_values,
GTypeCValue *collect_values,
G_GNUC_UNUSED guint collect_flags)
{
GType *ptr = collect_values->v_pointer;
*ptr = moo_value_get_gtype (value);
return NULL;
}
GType
moo_gtype_get_type (void)
{
static GType type = 0;
if (!type)
{
static GTypeValueTable val_table = {
moo_gtype_value_init,
NULL,
moo_gtype_value_copy,
NULL,
(char*) "p",
moo_gtype_collect_value,
(char*) "p",
moo_gtype_lcopy_value
};
static GTypeInfo info = {
/* interface types, classed types, instantiated types */
0, /*class_size*/
NULL, /*base_init*/
NULL, /*base_finalize*/
NULL,/*class_init*/
NULL,/*class_finalize*/
NULL,/*class_data*/
0,/*instance_size*/
0,/*n_preallocs*/
NULL,/*instance_init*/
/* value handling */
&val_table
};
static GTypeFundamentalInfo finfo = { 0 };
type = g_type_register_fundamental (g_type_fundamental_next (),
"MooGType",
&info, &finfo, 0);
}
return type;
}
void
moo_value_set_gtype (GValue *value,
GType v_gtype)
{
MOO_GTYPE_PEEK(value) = (gpointer) v_gtype;
}
GType
moo_value_get_gtype (const GValue *value)
{
return (GType) MOO_GTYPE_PEEK(value);
}
static void
param_gtype_set_default (GParamSpec *pspec,
GValue *value)
{
MooParamSpecGType *mspec = MOO_PARAM_SPEC_GTYPE (pspec);
moo_value_set_gtype (value, mspec->base);
}
static gboolean
param_gtype_validate (GParamSpec *pspec,
GValue *value)
{
MooParamSpecGType *mspec = MOO_PARAM_SPEC_GTYPE (pspec);
GType t = moo_value_get_gtype (value);
gboolean changed = FALSE;
if (G_TYPE_IS_DERIVABLE (mspec->base))
{
if (!g_type_is_a (t, mspec->base))
{
moo_value_set_gtype (value, mspec->base);
changed = TRUE;
}
}
else if (!g_type_name (t))
{
moo_value_set_gtype (value, mspec->base);
changed = TRUE;
}
return changed;
}
static int
param_gtype_cmp (G_GNUC_UNUSED GParamSpec *pspec,
const GValue *value1,
const GValue *value2)
{
GType t1 = moo_value_get_gtype (value1);
GType t2 = moo_value_get_gtype (value2);
return t1 == t2 ? 0 : (t1 < t2 ? -1 : 1);
}
GType
moo_param_gtype_get_type (void)
{
static GType type = 0;
if (!type)
{
GParamSpecTypeInfo info = {
sizeof (MooParamSpecGType), /* instance_size */
16, /* n_preallocs */
NULL, /* instance_init */
MOO_TYPE_GTYPE, /* value_type */
NULL, /* finalize */
param_gtype_set_default, /* value_set_default */
param_gtype_validate, /* value_validate */
param_gtype_cmp, /* values_cmp */
};
type = g_param_type_register_static ("MooParamGType", &info);
}
return type;
}
GParamSpec*
moo_param_spec_gtype (const char *name,
const char *nick,
const char *blurb,
GType base,
GParamFlags flags)
{
MooParamSpecGType *pspec;
g_return_val_if_fail (g_type_name (base) != NULL, NULL);
pspec = g_param_spec_internal (MOO_TYPE_PARAM_GTYPE,
name, nick, blurb, flags);
pspec->base = base;
return G_PARAM_SPEC (pspec);
}
GType g_param_type_register_static (const gchar *name,
const GParamSpecTypeInfo *pspec_info);
/*****************************************************************************/
/* Converting values forth and back
*/
gboolean
moo_value_convert (const GValue *src,
GValue *dest)
{
GType src_type, dest_type;
g_return_val_if_fail (G_IS_VALUE (src) && G_IS_VALUE (dest), FALSE);
src_type = G_VALUE_TYPE (src);
dest_type = G_VALUE_TYPE (dest);
g_return_val_if_fail (moo_value_type_supported (src_type), FALSE);
g_return_val_if_fail (moo_value_type_supported (dest_type), FALSE);
if (src_type == dest_type)
{
g_value_copy (src, dest);
return TRUE;
}
if (dest_type == G_TYPE_STRING)
{
if (src_type == G_TYPE_BOOLEAN)
{
const char *string =
g_value_get_boolean (src) ? "TRUE" : "FALSE";
g_value_set_static_string (dest, string);
return TRUE;
}
if (src_type == G_TYPE_DOUBLE)
{
char *string =
g_strdup_printf ("%f", g_value_get_double (src));
g_value_take_string (dest, string);
return TRUE;
}
if (src_type == G_TYPE_INT)
{
char *string =
g_strdup_printf ("%d", g_value_get_int (src));
g_value_take_string (dest, string);
return TRUE;
}
if (src_type == G_TYPE_UINT)
{
char *string =
g_strdup_printf ("%d", g_value_get_uint (src));
g_value_take_string (dest, string);
return TRUE;
}
if (src_type == GDK_TYPE_COLOR)
{
char string[14];
const GdkColor *color = g_value_get_boxed (src);
if (!color)
{
g_value_set_string (dest, NULL);
return TRUE;
}
else
{
g_snprintf (string, 8, "#%02x%02x%02x",
color->red >> 8,
color->green >> 8,
color->blue >> 8);
g_value_set_string (dest, string);
return TRUE;
}
}
if (G_TYPE_IS_ENUM (src_type))
{
gpointer klass;
GEnumClass *enum_class;
GEnumValue *enum_value;
klass = g_type_class_ref (src_type);
g_return_val_if_fail (G_IS_ENUM_CLASS (klass), FALSE);
enum_class = G_ENUM_CLASS (klass);
enum_value = g_enum_get_value (enum_class,
g_value_get_enum (src));
if (!enum_value)
{
char *string = g_strdup_printf ("%d", g_value_get_enum (src));
g_value_take_string (dest, string);
g_type_class_unref (klass);
g_return_val_if_reached (TRUE);
}
g_value_set_static_string (dest, enum_value->value_nick);
g_type_class_unref (klass);
return TRUE;
}
g_return_val_if_reached (FALSE);
}
if (src_type == G_TYPE_STRING)
{
const char *string = g_value_get_string (src);
if (dest_type == G_TYPE_BOOLEAN)
{
if (!string || !string[0])
g_value_set_boolean (dest, FALSE);
else
g_value_set_boolean (dest,
! g_ascii_strcasecmp (string, "1") ||
! g_ascii_strcasecmp (string, "yes") ||
! g_ascii_strcasecmp (string, "true"));
return TRUE;
}
if (dest_type == G_TYPE_DOUBLE)
{
if (!string || !string[0])
g_value_set_double (dest, 0);
else
g_value_set_double (dest, g_ascii_strtod (string, NULL));
return TRUE;
}
if (dest_type == G_TYPE_INT)
{
if (!string || !string[0])
{
g_value_set_int (dest, 0);
}
else
{
long v;
errno = 0;
v = strtol (string, NULL, 10);
if (errno)
return FALSE;
#if G_MAXLONG > G_MAXINT
if (v > G_MAXINT || v < G_MININT)
return FALSE;
#endif
g_value_set_int (dest, v);
}
return TRUE;
}
if (dest_type == G_TYPE_UINT)
{
if (!string || !string[0])
{
g_value_set_uint (dest, 0);
}
else
{
gulong v;
errno = 0;
v = strtoul (string, NULL, 10);
if (errno)
return FALSE;
#if G_MAXULONG > G_MAXUINT
if (v > G_MAXUINT)
return FALSE;
#endif
g_value_set_uint (dest, v);
}
return TRUE;
}
if (dest_type == GDK_TYPE_COLOR)
{
GdkColor color;
if (!string || !string[0])
{
g_value_set_boxed (dest, NULL);
return TRUE;
}
g_return_val_if_fail (gdk_color_parse (string, &color),
FALSE);
g_value_set_boxed (dest, &color);
return TRUE;
}
if (G_TYPE_IS_ENUM (dest_type))
{
gpointer klass;
GEnumClass *enum_class;
GEnumValue *enum_value;
int ival;
if (!string || !string[0])
{
g_value_set_enum (dest, 0);
return TRUE;
}
klass = g_type_class_ref (dest_type);
g_return_val_if_fail (G_IS_ENUM_CLASS (klass), FALSE);
enum_class = G_ENUM_CLASS (klass);
enum_value = g_enum_get_value_by_name (enum_class, string);
if (!enum_value)
enum_value = g_enum_get_value_by_nick (enum_class, string);
if (enum_value)
{
ival = enum_value->value;
}
else
{
ival = g_ascii_strtod (string, NULL);
if (ival < enum_class->minimum || ival > enum_class->maximum)
{
g_value_set_enum (dest, ival);
g_type_class_unref (klass);
g_return_val_if_reached (TRUE);
}
}
g_value_set_enum (dest, ival);
g_type_class_unref (klass);
return TRUE;
}
g_return_val_if_reached (FALSE);
}
if (G_TYPE_IS_ENUM (src_type) && dest_type == G_TYPE_INT)
{
g_value_set_int (dest, g_value_get_enum (src));
return TRUE;
}
if (G_TYPE_IS_ENUM (dest_type) && src_type == G_TYPE_INT)
{
g_value_set_enum (dest, g_value_get_int (src));
return TRUE;
}
if (src_type == G_TYPE_DOUBLE && dest_type == G_TYPE_INT)
{
g_value_set_int (dest, g_value_get_double (src));
return TRUE;
}
if (dest_type == G_TYPE_DOUBLE && src_type == G_TYPE_INT)
{
g_value_set_double (dest, g_value_get_int (src));
return TRUE;
}
g_return_val_if_reached (FALSE);
}
gboolean
moo_value_equal (const GValue *a,
const GValue *b)
{
GType type;
g_return_val_if_fail (G_IS_VALUE (a) && G_IS_VALUE (b), a == b);
g_return_val_if_fail (G_VALUE_TYPE (a) == G_VALUE_TYPE (b), a == b);
g_return_val_if_fail (G_VALUE_TYPE (a) == G_VALUE_TYPE (b), a == b);
type = G_VALUE_TYPE (a);
if (type == G_TYPE_BOOLEAN)
{
gboolean ba = g_value_get_boolean (a);
gboolean bb = g_value_get_boolean (b);
return (ba && bb) || (!ba && !bb);
}
if (type == G_TYPE_INT)
return g_value_get_int (a) == g_value_get_int (b);
if (type == G_TYPE_UINT)
return g_value_get_uint (a) == g_value_get_uint (b);
if (type == G_TYPE_DOUBLE)
return g_value_get_double (a) == g_value_get_double (b);
if (type == G_TYPE_STRING)
{
const char *sa, *sb;
sa = g_value_get_string (a);
sb = g_value_get_string (b);
if (!sa || !sb)
return sa == sb;
else
return !strcmp (sa, sb);
}
if (type == GDK_TYPE_COLOR)
{
const GdkColor *ca, *cb;
ca = g_value_get_boxed (a);
cb = g_value_get_boxed (b);
if (!ca || !cb)
return ca == cb;
else
return ca->red == cb->red &&
ca->green == cb->green &&
ca->blue == cb->blue;
}
if (G_TYPE_IS_ENUM (type))
return g_value_get_enum (a) == g_value_get_enum (b);
if (G_TYPE_IS_FLAGS (type))
return g_value_get_flags (a) == g_value_get_flags (b);
g_return_val_if_reached (a == b);
}
gboolean
moo_value_type_supported (GType type)
{
return type == G_TYPE_BOOLEAN ||
type == G_TYPE_INT ||
type == G_TYPE_UINT ||
type == G_TYPE_DOUBLE ||
type == G_TYPE_STRING ||
type == GDK_TYPE_COLOR ||
G_TYPE_IS_ENUM (type);
}
gboolean
moo_value_convert_to_bool (const GValue *val)
{
GValue result;
result.g_type = 0;
g_value_init (&result, G_TYPE_BOOLEAN);
moo_value_convert (val, &result);
return g_value_get_boolean (&result);
}
int
moo_value_convert_to_int (const GValue *val)
{
GValue result;
result.g_type = 0;
g_value_init (&result, G_TYPE_INT);
moo_value_convert (val, &result);
return g_value_get_int (&result);
}
int
moo_value_convert_to_enum (const GValue *val,
GType enum_type)
{
GValue result;
result.g_type = 0;
g_value_init (&result, enum_type);
moo_value_convert (val, &result);
return g_value_get_enum (&result);
}
double
moo_value_convert_to_double (const GValue *val)
{
GValue result;
result.g_type = 0;
g_value_init (&result, G_TYPE_DOUBLE);
moo_value_convert (val, &result);
return g_value_get_double (&result);
}
const GdkColor*
moo_value_convert_to_color (const GValue *val)
{
static GValue result;
if (G_IS_VALUE (&result))
g_value_unset (&result);
g_value_init (&result, GDK_TYPE_COLOR);
if (!moo_value_convert (val, &result))
return NULL;
else
return g_value_get_boxed (&result);
}
const char*
moo_value_convert_to_string (const GValue *val)
{
static GValue result;
if (G_IS_VALUE (&result))
g_value_unset (&result);
g_value_init (&result, G_TYPE_STRING);
if (!moo_value_convert (val, &result))
return NULL;
else
return g_value_get_string (&result);
}
gboolean
moo_value_convert_from_string (const char *string,
GValue *val)
{
GValue str_val;
gboolean result;
g_return_val_if_fail (G_IS_VALUE (val), FALSE);
g_return_val_if_fail (string != NULL, FALSE);
str_val.g_type = 0;
g_value_init (&str_val, G_TYPE_STRING);
g_value_set_static_string (&str_val, string);
result = moo_value_convert (&str_val, val);
g_value_unset (&str_val);
return result;
}
int
moo_convert_string_to_int (const char *string,
int default_val)
{
int int_val;
if (string)
{
GValue str_val;
str_val.g_type = 0;
g_value_init (&str_val, G_TYPE_STRING);
g_value_set_static_string (&str_val, string);
int_val = moo_value_convert_to_int (&str_val);
g_value_unset (&str_val);
}
else
{
int_val = default_val;
}
return int_val;
}
gboolean
moo_convert_string_to_bool (const char *string,
gboolean default_val)
{
gboolean bool_val;
if (string)
{
GValue str_val;
str_val.g_type = 0;
g_value_init (&str_val, G_TYPE_STRING);
g_value_set_static_string (&str_val, string);
bool_val = moo_value_convert_to_bool (&str_val);
g_value_unset (&str_val);
}
else
{
bool_val = default_val;
}
return bool_val;
}
const char*
moo_convert_bool_to_string (gboolean value)
{
GValue bool_val;
bool_val.g_type = 0;
g_value_init (&bool_val, G_TYPE_BOOLEAN);
g_value_set_boolean (&bool_val, value);
return moo_value_convert_to_string (&bool_val);
}
const char*
moo_convert_int_to_string (int value)
{
GValue int_val;
int_val.g_type = 0;
g_value_init (&int_val, G_TYPE_INT);
g_value_set_int (&int_val, value);
return moo_value_convert_to_string (&int_val);
}
gboolean
moo_value_change_type (GValue *val,
GType new_type)
{
GValue tmp;
gboolean result;
g_return_val_if_fail (G_IS_VALUE (val), FALSE);
g_return_val_if_fail (moo_value_type_supported (new_type), FALSE);
tmp.g_type = 0;
g_value_init (&tmp, new_type);
result = moo_value_convert (val, &tmp);
if (result)
{
g_value_unset (val);
memcpy (val, &tmp, sizeof (GValue));
}
return result;
}
/*****************************************************************************/
/* GParameter array manipulation
*/
static void copy_param (GParameter *dest,
GParameter *src);
GParameter*
moo_param_array_collect (GType type,
guint *len,
const char *first_prop_name,
...)
{
GParameter *array;
va_list var_args;
va_start (var_args, first_prop_name);
array = moo_param_array_collect_valist (type, len,
first_prop_name,
var_args);
va_end (var_args);
return array;
}
GParameter*
moo_param_array_add (GType type,
GParameter *src,
guint len,
guint *new_len,
const char *first_prop_name,
...)
{
GParameter *copy;
va_list var_args;
va_start (var_args, first_prop_name);
copy = moo_param_array_add_valist (type, src, len, new_len,
first_prop_name,
var_args);
va_end (var_args);
return copy;
}
GParameter*
moo_param_array_add_type (GParameter *src,
guint len,
guint *new_len,
const char *first_prop_name,
...)
{
GParameter *copy;
va_list var_args;
va_start (var_args, first_prop_name);
copy = moo_param_array_add_type_valist (src, len, new_len,
first_prop_name,
var_args);
va_end (var_args);
return copy;
}
GParameter*
moo_param_array_add_valist (GType type,
GParameter *src,
guint len,
guint *new_len,
const char *first_prop_name,
va_list var_args)
{
const char *name;
GArray *copy;
guint i;
GObjectClass *klass = g_type_class_ref (type); /* TODO: unref */
g_return_val_if_fail (klass != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
copy = g_array_new (FALSE, TRUE, sizeof (GParameter));
for (i = 0; i < len; ++i)
{
GParameter param = {NULL, {0, {{0}, {0}}}};
copy_param (&param, &src[i]);
g_array_append_val (copy, param);
}
name = first_prop_name;
while (name)
{
char *error = NULL;
GParameter param = {NULL, {0, {{0}, {0}}}};
GParamSpec *pspec = g_object_class_find_property (klass, name);
if (!pspec) {
g_warning ("%s: class '%s' doesn't have property '%s'",
G_STRLOC, g_type_name (type), name);
moo_param_array_free ((GParameter*)copy->data, copy->len);
g_array_free (copy, FALSE);
return NULL;
}
param.name = g_strdup (name);
g_value_init (&param.value, G_PARAM_SPEC_VALUE_TYPE (pspec));
G_VALUE_COLLECT (&param.value, var_args, 0, &error);
if (error) {
g_critical ("%s: %s", G_STRLOC, error);
g_free (error);
g_value_unset (&param.value);
g_free ((char*)param.name);
moo_param_array_free ((GParameter*)copy->data, copy->len);
g_array_free (copy, FALSE);
return NULL;
}
g_array_append_val (copy, param);
name = va_arg (var_args, char*);
}
*new_len = copy->len;
return (GParameter*) g_array_free (copy, FALSE);
}
GParameter*
moo_param_array_add_type_valist (GParameter *src,
guint len,
guint *new_len,
const char *first_prop_name,
va_list var_args)
{
const char *name;
GArray *copy;
guint i;
g_return_val_if_fail (src != NULL, NULL);
copy = g_array_new (FALSE, TRUE, sizeof (GParameter));
for (i = 0; i < len; ++i) {
GParameter param = {NULL, {0, {{0}, {0}}}};
copy_param (&param, &src[i]);
g_array_append_val (copy, param);
}
name = first_prop_name;
while (name)
{
char *error = NULL;
GParameter param = {NULL, {0, {{0}, {0}}}};
GType type;
type = va_arg (var_args, GType);
if (G_TYPE_FUNDAMENTAL (type) == G_TYPE_INVALID)
{
g_warning ("%s: invalid type id passed", G_STRLOC);
moo_param_array_free ((GParameter*)copy->data, copy->len);
g_array_free (copy, FALSE);
return NULL;
}
param.name = g_strdup (name);
g_value_init (&param.value, type);
G_VALUE_COLLECT (&param.value, var_args, 0, &error);
if (error)
{
g_critical ("%s: %s", G_STRLOC, error);
g_free (error);
g_value_unset (&param.value);
g_free ((char*)param.name);
moo_param_array_free ((GParameter*)copy->data, copy->len);
g_array_free (copy, FALSE);
return NULL;
}
g_array_append_val (copy, param);
name = va_arg (var_args, char*);
}
*new_len = copy->len;
return (GParameter*) g_array_free (copy, FALSE);
}
GParameter*
moo_param_array_collect_valist (GType type,
guint *len,
const char *first_prop_name,
va_list var_args)
{
GObjectClass *klass;
GArray *params = NULL;
const char *prop_name;
g_return_val_if_fail (G_TYPE_IS_OBJECT (type), NULL);
g_return_val_if_fail (first_prop_name != NULL, NULL);
klass = g_type_class_ref (type);
params = g_array_new (FALSE, TRUE, sizeof (GParameter));
prop_name = first_prop_name;
while (prop_name)
{
char *error = NULL;
GParameter param;
GParamSpec *pspec = g_object_class_find_property (klass, prop_name);
if (!pspec)
{
g_warning ("%s: class '%s' doesn't have property '%s'",
G_STRLOC, g_type_name (type), prop_name);
moo_param_array_free ((GParameter*)params->data, params->len);
g_array_free (params, FALSE);
g_type_class_unref (klass);
return NULL;
}
param.name = g_strdup (prop_name);
param.value.g_type = 0;
g_value_init (&param.value, G_PARAM_SPEC_VALUE_TYPE (pspec));
G_VALUE_COLLECT (&param.value, var_args, 0, &error);
if (error)
{
g_critical ("%s: %s", G_STRLOC, error);
g_free (error);
g_value_unset (&param.value);
g_free ((char*)param.name);
moo_param_array_free ((GParameter*)params->data, params->len);
g_array_free (params, FALSE);
g_type_class_unref (klass);
return NULL;
}
g_array_append_val (params, param);
prop_name = va_arg (var_args, char*);
}
g_type_class_unref (klass);
*len = params->len;
return (GParameter*) g_array_free (params, FALSE);
}
void
moo_param_array_free (GParameter *array,
guint len)
{
guint i;
for (i = 0; i < len; ++i)
{
g_value_unset (&array[i].value);
g_free ((char*)array[i].name);
}
g_free (array);
}
static void
copy_param (GParameter *dest,
GParameter *src)
{
dest->name = g_strdup (src->name);
g_value_init (&dest->value, G_VALUE_TYPE (&src->value));
g_value_copy (&src->value, &dest->value);
}
/*****************************************************************************/
/* Signal that does not require class method
*/
static void
void_marshal (G_GNUC_UNUSED GClosure *closure,
G_GNUC_UNUSED GValue *return_value,
G_GNUC_UNUSED guint n_param_values,
G_GNUC_UNUSED const GValue *param_values,
G_GNUC_UNUSED gpointer invocation_hint,
G_GNUC_UNUSED gpointer marshal_data)
{
}
static GClosure*
void_closure_new (void)
{
GClosure *closure = g_closure_new_simple (sizeof (GClosure), NULL);
g_closure_set_marshal (closure, void_marshal);
return closure;
}
guint
moo_signal_new_cb (const gchar *signal_name,
GType itype,
GSignalFlags signal_flags,
GCallback handler,
GSignalAccumulator accumulator,
gpointer accu_data,
GSignalCMarshaller c_marshaller,
GType return_type,
guint n_params,
...)
{
va_list args;
guint signal_id;
g_return_val_if_fail (signal_name != NULL, 0);
va_start (args, n_params);
if (handler)
signal_id = g_signal_new_valist (signal_name, itype, signal_flags,
g_cclosure_new (handler, NULL, NULL),
accumulator, accu_data, c_marshaller,
return_type, n_params, args);
else
signal_id = g_signal_new_valist (signal_name, itype, signal_flags,
void_closure_new (),
accumulator, accu_data, c_marshaller,
return_type, n_params, args);
va_end (args);
return signal_id;
}
/*****************************************************************************/
/* MooObjectFactory
*/
static void moo_object_factory_finalize (GObject *object);
static void moo_object_factory_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void moo_object_factory_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
enum {
PROP_0,
PROP_OBJECT_TYPE,
PROP_FACTORY_FUNC,
PROP_FACTORY_FUNC_DATA
};
/* MOO_TYPE_OBJECT_FACTORY */
G_DEFINE_TYPE (MooObjectFactory, moo_object_factory, G_TYPE_OBJECT)
static void
moo_object_factory_class_init (MooObjectFactoryClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = moo_object_factory_set_property;
gobject_class->get_property = moo_object_factory_get_property;
gobject_class->finalize = moo_object_factory_finalize;
g_object_class_install_property (gobject_class,
PROP_OBJECT_TYPE,
moo_param_spec_gtype ("object_type",
"object_type",
"object_type",
G_TYPE_OBJECT,
G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FACTORY_FUNC,
g_param_spec_pointer ("factory_func",
"factory_func",
"factory_func",
G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_FACTORY_FUNC_DATA,
g_param_spec_pointer ("factory_func_data",
"factory_func_data",
"factory_func_data",
G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
}
static void
moo_object_factory_init (MooObjectFactory *factory)
{
factory->factory_func = NULL;
factory->factory_func_data = NULL;
factory->object_type = 0;
factory->n_params = 0;
factory->params = NULL;
}
static void
moo_object_factory_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MooObjectFactory *factory = MOO_OBJECT_FACTORY (object);
switch (prop_id)
{
case PROP_FACTORY_FUNC:
g_value_set_pointer (value, (gpointer)factory->factory_func);
break;
case PROP_FACTORY_FUNC_DATA:
g_value_set_pointer (value, factory->factory_func_data);
break;
case PROP_OBJECT_TYPE:
moo_value_set_gtype (value, factory->object_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
moo_object_factory_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MooObjectFactory *factory = MOO_OBJECT_FACTORY (object);
switch (prop_id)
{
case PROP_FACTORY_FUNC:
factory->factory_func = (MooObjectFactoryFunc)g_value_get_pointer (value);
break;
case PROP_FACTORY_FUNC_DATA:
factory->factory_func_data = g_value_get_pointer (value);
break;
case PROP_OBJECT_TYPE:
factory->object_type = moo_value_get_gtype (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
moo_object_factory_finalize (GObject *object)
{
MooObjectFactory *factory = MOO_OBJECT_FACTORY (object);
moo_param_array_free (factory->params, factory->n_params);
G_OBJECT_CLASS (moo_object_factory_parent_class)->finalize (object);
}
gpointer
moo_object_factory_create_object (MooObjectFactory *factory,
gpointer data,
const char *prop_name,
...)
{
g_return_val_if_fail (MOO_IS_OBJECT_FACTORY (factory), NULL);
if (factory->factory_func)
{
if (factory->factory_func_data)
data = factory->factory_func_data;
return factory->factory_func (data, factory);
}
if (!prop_name)
{
return g_object_newv (factory->object_type,
factory->n_params,
factory->params);
}
else
{
GObject *object;
GParameter *params;
guint n_params;
va_list var_args;
va_start (var_args, prop_name);
params = moo_param_array_add_valist (factory->object_type,
factory->params,
factory->n_params,
&n_params,
prop_name,
var_args);
va_end (var_args);
g_return_val_if_fail (params != NULL, NULL);
object = g_object_newv (factory->object_type,
n_params,
params);
moo_param_array_free (params, n_params);
return object;
}
}
MooObjectFactory*
moo_object_factory_new_func (MooObjectFactoryFunc factory_func,
gpointer data)
{
return g_object_new (MOO_TYPE_OBJECT_FACTORY,
"factory_func", factory_func,
"factory_func_data", data,
NULL);
}
MooObjectFactory*
moo_object_factory_new (GType object_type,
const char *first_prop_name,
...)
{
MooObjectFactory *factory;
va_list var_args;
g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
va_start (var_args, first_prop_name);
factory = moo_object_factory_new_valist (object_type, first_prop_name, var_args);
va_end (var_args);
return factory;
}
MooObjectFactory*
moo_object_factory_new_valist (GType object_type,
const char *first_prop_name,
va_list var_args)
{
GParameter *params = NULL;
guint n_params = 0;
MooObjectFactory *factory;
g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
if (!first_prop_name)
return g_object_new (MOO_TYPE_OBJECT_FACTORY,
"object_type", object_type,
NULL);
params = moo_param_array_collect_valist (object_type,
&n_params,
first_prop_name,
var_args);
g_return_val_if_fail (params != NULL, NULL);
factory = g_object_new (MOO_TYPE_OBJECT_FACTORY,
"object_type", object_type,
NULL);
factory->n_params = n_params;
factory->params = params;
return factory;
}
MooObjectFactory*
moo_object_factory_new_a (GType object_type,
GParameter *params,
guint n_params)
{
MooObjectFactory *factory;
g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
g_return_val_if_fail (params != NULL, NULL);
factory = g_object_new (MOO_TYPE_OBJECT_FACTORY,
"object_type", object_type,
NULL);
factory->params = params;
factory->n_params = n_params;
return factory;
}
/****************************************************************************/
/* Property watch
*/
typedef struct _Watch Watch;
typedef void (*WatchSourceNotify) (Watch *watch);
typedef void (*WatchTargetNotify) (Watch *watch);
typedef void (*WatchDestroy) (Watch *watch);
typedef struct {
WatchSourceNotify source_notify;
WatchTargetNotify target_notify;
WatchDestroy destroy;
} WatchClass;
#define watch_new(Type_,klass_,src_,tgt_,notify_,data_) \
((Type_*) watch_alloc (sizeof (Type_), klass_, src_, tgt_, notify_, data_))
struct _Watch {
WatchClass *klass;
MooObjectPtr *source;
MooObjectPtr *target;
GDestroyNotify notify;
gpointer notify_data;
guint id;
};
static GHashTable *watches = NULL;
static guint watch_last_id = 0;
static void
watch_destroy (Watch *w)
{
if (w)
{
if (w->klass->destroy)
w->klass->destroy (w);
if (w->notify)
w->notify (w->notify_data);
moo_object_ptr_free (w->source);
moo_object_ptr_free (w->target);
g_free (w);
}
}
static void
watch_source_died (Watch *w)
{
if (w->klass->source_notify)
w->klass->source_notify (w);
moo_object_ptr_free (w->source);
w->source = NULL;
g_hash_table_remove (watches, GUINT_TO_POINTER (w->id));
}
static void
watch_target_died (Watch *w)
{
if (w->klass->target_notify)
w->klass->target_notify (w);
moo_object_ptr_free (w->target);
w->target = NULL;
g_hash_table_remove (watches, GUINT_TO_POINTER (w->id));
}
static Watch *
watch_alloc (gsize size,
WatchClass *klass,
GObject *source,
GObject *target,
GDestroyNotify notify,
gpointer notify_data)
{
Watch *w;
g_return_val_if_fail (size >= sizeof (Watch), NULL);
g_return_val_if_fail (G_IS_OBJECT (source), NULL);
g_return_val_if_fail (G_IS_OBJECT (target), NULL);
w = g_malloc0 (size);
w->source = moo_object_ptr_new (source, (GWeakNotify) watch_source_died, w);
w->target = moo_object_ptr_new (target, (GWeakNotify) watch_target_died, w);
w->klass = klass;
w->notify = notify;
w->notify_data = notify_data;
w->id = ++watch_last_id;
if (!watches)
watches = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) watch_destroy);
g_hash_table_insert (watches, GUINT_TO_POINTER (w->id), w);
return w;
}
typedef struct {
Watch parent;
GParamSpec *source_pspec;
GParamSpec *target_pspec;
MooTransformPropFunc transform;
gpointer transform_data;
} PropWatch;
static void prop_watch_check (PropWatch *watch);
static void prop_watch_destroy (Watch *watch);
static WatchClass PropWatchClass = {NULL, NULL, prop_watch_destroy};
static PropWatch*
prop_watch_new (GObject *target,
const char *target_prop,
GObject *source,
const char *source_prop,
const char *signal,
MooTransformPropFunc transform,
gpointer transform_data,
GDestroyNotify destroy_notify,
gpointer destroy_notify_data)
{
PropWatch *watch;
GObjectClass *target_class, *source_class;
char *signal_name = NULL;
GParamSpec *source_pspec;
GParamSpec *target_pspec;
g_return_val_if_fail (G_IS_OBJECT (target), NULL);
g_return_val_if_fail (G_IS_OBJECT (source), NULL);
g_return_val_if_fail (target_prop != NULL, NULL);
g_return_val_if_fail (source_prop != NULL, NULL);
g_return_val_if_fail (transform != NULL, NULL);
target_class = g_type_class_peek (G_OBJECT_TYPE (target));
source_class = g_type_class_peek (G_OBJECT_TYPE (source));
source_pspec = g_object_class_find_property (source_class, source_prop);
target_pspec = g_object_class_find_property (target_class, target_prop);
if (!source_pspec || !target_pspec)
{
if (!source_pspec)
g_warning ("%s: no property '%s' in class '%s'",
G_STRLOC, source_prop, g_type_name (G_OBJECT_TYPE (source)));
if (!target_pspec)
g_warning ("%s: no property '%s' in class '%s'",
G_STRLOC, target_prop, g_type_name (G_OBJECT_TYPE (target)));
return NULL;
}
watch = watch_new (PropWatch, &PropWatchClass, source, target,
destroy_notify, destroy_notify_data);
watch->source_pspec = source_pspec;
watch->target_pspec = target_pspec;
watch->transform = transform;
watch->transform_data = transform_data;
if (!signal)
{
signal_name = g_strdup_printf ("notify::%s", source_prop);
signal = signal_name;
}
g_signal_connect_swapped (source, signal,
G_CALLBACK (prop_watch_check),
watch);
g_free (signal_name);
return watch;
}
static void
prop_watch_destroy (Watch *watch)
{
if (MOO_OBJECT_PTR_GET (watch->source))
g_signal_handlers_disconnect_by_func (MOO_OBJECT_PTR_GET (watch->source),
(gpointer) prop_watch_check,
watch);
}
guint
moo_add_property_watch (gpointer target,
const char *target_prop,
gpointer source,
const char *source_prop,
MooTransformPropFunc transform,
gpointer transform_data,
GDestroyNotify destroy_notify)
{
PropWatch *watch;
g_return_val_if_fail (G_IS_OBJECT (target), 0);
g_return_val_if_fail (G_IS_OBJECT (source), 0);
g_return_val_if_fail (target_prop != NULL, 0);
g_return_val_if_fail (source_prop != NULL, 0);
g_return_val_if_fail (transform != NULL, 0);
watch = prop_watch_new (target, target_prop, source, source_prop,
NULL, transform, transform_data,
destroy_notify, transform_data);
if (!watch)
return 0;
prop_watch_check (watch);
return watch->parent.id;
}
static void
prop_watch_check (PropWatch *watch)
{
GValue source_val, target_val, old_target_val;
GObject *source, *target;
source = MOO_OBJECT_PTR_GET (watch->parent.source);
target = MOO_OBJECT_PTR_GET (watch->parent.target);
g_return_if_fail (source && target);
source_val.g_type = 0;
target_val.g_type = 0;
old_target_val.g_type = 0;
g_value_init (&source_val, watch->source_pspec->value_type);
g_value_init (&target_val, watch->target_pspec->value_type);
g_value_init (&old_target_val, watch->target_pspec->value_type);
g_object_ref (source);
g_object_ref (target);
g_object_get_property (source,
watch->source_pspec->name,
&source_val);
g_object_get_property (target,
watch->target_pspec->name,
&old_target_val);
watch->transform (&target_val, &source_val, watch->transform_data);
if (g_param_values_cmp (watch->target_pspec, &target_val, &old_target_val))
g_object_set_property (target,
watch->target_pspec->name,
&target_val);
g_object_unref (source);
g_object_unref (target);
g_value_unset (&source_val);
g_value_unset (&target_val);
g_value_unset (&old_target_val);
}
void
moo_copy_boolean (GValue *target,
const GValue *source,
G_GNUC_UNUSED gpointer dummy)
{
g_value_set_boolean (target, g_value_get_boolean (source) ? TRUE : FALSE);
}
void
moo_invert_boolean (GValue *target,
const GValue *source,
G_GNUC_UNUSED gpointer dummy)
{
g_value_set_boolean (target, !g_value_get_boolean (source));
}
guint
moo_bind_bool_property (gpointer target,
const char *target_prop,
gpointer source,
const char *source_prop,
gboolean invert)
{
if (invert)
return moo_add_property_watch (target, target_prop, source, source_prop,
moo_invert_boolean, NULL, NULL);
else
return moo_add_property_watch (target, target_prop, source, source_prop,
moo_copy_boolean, NULL, NULL);
}
gboolean
moo_sync_bool_property (gpointer slave,
const char *slave_prop,
gpointer master,
const char *master_prop,
gboolean invert)
{
guint id1 = 0, id2 = 0;
id1 = moo_bind_bool_property (slave, slave_prop, master, master_prop, invert);
if (id1)
{
id2 = moo_bind_bool_property (master, master_prop, slave, slave_prop, invert);
if (!id2)
moo_watch_remove (id1);
}
return id1 && id2;
}
void
moo_bind_sensitive (GtkWidget *btn,
GtkWidget **dependent,
int num_dependent,
gboolean invert)
{
int i;
for (i = 0; i < num_dependent; ++i)
moo_bind_bool_property (G_OBJECT (dependent[i]), "sensitive",
G_OBJECT (btn), "active", invert);
}
gboolean
moo_watch_remove (guint watch_id)
{
Watch *watch;
if (!watches)
return FALSE;
watch = g_hash_table_lookup (watches, GUINT_TO_POINTER (watch_id));
if (!watch)
return FALSE;
g_hash_table_remove (watches, GUINT_TO_POINTER (watch_id));
return TRUE;
}
void
moo_watch_add_signal (guint watch_id,
const char *source_signal)
{
Watch *watch;
g_return_if_fail (watches != NULL);
g_return_if_fail (source_signal != NULL);
watch = g_hash_table_lookup (watches, GUINT_TO_POINTER (watch_id));
g_return_if_fail (watch != NULL);
g_return_if_fail (watch->klass == &PropWatchClass);
g_signal_connect_swapped (MOO_OBJECT_PTR_GET (watch->source),
source_signal, G_CALLBACK (prop_watch_check),
watch);
}
void
moo_watch_add_property (guint watch_id,
const char *source_prop)
{
char *signal;
g_return_if_fail (source_prop != NULL);
signal = g_strdup_printf ("notify::%s", source_prop);
moo_watch_add_signal (watch_id, signal);
g_free (signal);
}
/************************************************************/
/* SignalWatch
*/
typedef struct {
Watch parent;
guint signal_id;
GQuark detail;
} SignalWatch;
static void signal_watch_invoke (SignalWatch *watch);
static void signal_watch_destroy (Watch *watch);
static WatchClass SignalWatchClass = {NULL, NULL, signal_watch_destroy};
static gboolean
check_signal (GObject *obj,
const char *signal,
guint *signal_id,
GQuark *detail,
gboolean any_return)
{
GSignalQuery query;
if (!g_signal_parse_name (signal, G_OBJECT_TYPE (obj), signal_id, detail, FALSE))
{
g_warning ("%s: could not parse signal '%s' of '%s' object",
G_STRLOC, signal, g_type_name (G_OBJECT_TYPE (obj)));
return FALSE;
}
g_signal_query (*signal_id, &query);
if (query.n_params > 0)
{
g_warning ("%s: implement me", G_STRLOC);
return FALSE;
}
switch (query.return_type)
{
case G_TYPE_NONE:
break;
case G_TYPE_BOOLEAN:
case G_TYPE_INT:
case G_TYPE_UINT:
if (!any_return)
g_warning ("%s: implement me", G_STRLOC);
return FALSE;
default:
g_warning ("%s: implement me", G_STRLOC);
return FALSE;
}
return TRUE;
}
static SignalWatch*
signal_watch_new (GObject *target,
const char *target_signal,
GObject *source,
const char *source_signal)
{
SignalWatch *watch;
guint t_id, s_id;
GQuark t_detail, s_detail;
g_return_val_if_fail (G_IS_OBJECT (target), NULL);
g_return_val_if_fail (G_IS_OBJECT (source), NULL);
g_return_val_if_fail (target_signal != NULL, NULL);
g_return_val_if_fail (source_signal != NULL, NULL);
if (!check_signal (target, target_signal, &t_id, &t_detail, TRUE))
return NULL;
if (!check_signal (source, source_signal, &s_id, &s_detail, FALSE))
return NULL;
watch = watch_new (SignalWatch, &SignalWatchClass, source, target, NULL, NULL);
watch->signal_id = t_id;
watch->detail = t_detail;
g_signal_connect_swapped (source, source_signal,
G_CALLBACK (signal_watch_invoke),
watch);
return watch;
}
static void
signal_watch_destroy (Watch *watch)
{
if (MOO_OBJECT_PTR_GET (watch->source))
g_signal_handlers_disconnect_by_func (MOO_OBJECT_PTR_GET (watch->source),
(gpointer) signal_watch_invoke,
watch);
}
static void
signal_watch_invoke (SignalWatch *watch)
{
int ret[4];
g_signal_emit (MOO_OBJECT_PTR_GET (watch->parent.target),
watch->signal_id, watch->detail, ret);
}
guint
moo_bind_signal (gpointer target,
const char *target_signal,
gpointer source,
const char *source_signal)
{
SignalWatch *watch;
watch = signal_watch_new (target, target_signal, source, source_signal);
if (!watch)
return 0;
return watch->parent.id;
}
/*****************************************************************************/
/* Data store
*/
struct _MooData
{
GHashTable *hash;
guint ref_count;
GHashFunc hash_func;
GEqualFunc key_equal_func;
GDestroyNotify key_destroy_func;
};
GType
moo_ptr_get_type (void)
{
static GType type = 0;
if (!type)
type = g_boxed_type_register_static ("MooPtr",
(GBoxedCopyFunc) moo_ptr_ref,
(GBoxedFreeFunc) moo_ptr_unref);
return type;
}
MooPtr*
moo_ptr_new (gpointer data,
GDestroyNotify free_func)
{
MooPtr *ptr;
g_return_val_if_fail (data != NULL, NULL);
ptr = g_new (MooPtr, 1);
ptr->data = data;
ptr->free_func = free_func;
ptr->ref_count = 1;
return ptr;
}
MooPtr *
moo_ptr_ref (MooPtr *ptr)
{
if (ptr)
ptr->ref_count++;
return ptr;
}
void
moo_ptr_unref (MooPtr *ptr)
{
if (ptr && !--(ptr->ref_count))
{
if (ptr->free_func)
ptr->free_func (ptr->data);
g_free (ptr);
}
}
GType
moo_data_get_type (void)
{
static GType type = 0;
if (!type)
type = g_boxed_type_register_static ("MooData",
(GBoxedCopyFunc) moo_data_ref,
(GBoxedFreeFunc) moo_data_unref);
return type;
}
static void
free_gvalue (GValue *val)
{
if (val)
{
g_value_unset (val);
g_free (val);
}
}
static GValue *
copy_gvalue (const GValue *val)
{
GValue *copy;
g_return_val_if_fail (G_IS_VALUE (val), NULL);
copy = g_new (GValue, 1);
copy->g_type = 0;
g_value_init (copy, G_VALUE_TYPE (val));
g_value_copy (val, copy);
return copy;
}
MooData *
moo_data_new (GHashFunc hash_func,
GEqualFunc key_equal_func,
GDestroyNotify key_destroy_func)
{
MooData *data;
g_return_val_if_fail (hash_func != NULL, NULL);
g_return_val_if_fail (key_equal_func != NULL, NULL);
data = g_new0 (MooData, 1);
data->hash = g_hash_table_new_full (hash_func, key_equal_func,
key_destroy_func,
(GDestroyNotify) free_gvalue);
data->ref_count = 1;
data->hash_func = hash_func;
data->key_equal_func = key_equal_func;
data->key_destroy_func = key_destroy_func;
return data;
}
MooData *
moo_data_ref (MooData *data)
{
if (data)
data->ref_count++;
return data;
}
void
moo_data_unref (MooData *data)
{
if (data && !--(data->ref_count))
{
g_hash_table_destroy (data->hash);
g_free (data);
}
}
void
moo_data_insert_value (MooData *data,
gpointer key,
const GValue *value)
{
g_return_if_fail (data != NULL);
g_return_if_fail (G_IS_VALUE (value));
g_hash_table_insert (data->hash, key, copy_gvalue (value));
}
void
moo_data_insert_ptr (MooData *data,
gpointer key,
gpointer value,
GDestroyNotify destroy)
{
MooPtr *ptr;
GValue gval;
g_return_if_fail (data != NULL);
g_return_if_fail (value != NULL);
ptr = moo_ptr_new (value, destroy);
gval.g_type = 0;
g_value_init (&gval, MOO_TYPE_PTR);
g_value_set_boxed (&gval, ptr);
moo_data_insert_value (data, key, &gval);
g_value_unset (&gval);
moo_ptr_unref (ptr);
}
void
moo_data_remove (MooData *data,
gpointer key)
{
g_return_if_fail (data != NULL);
g_hash_table_remove (data->hash, key);
}
void
moo_data_clear (MooData *data)
{
g_return_if_fail (data != NULL);
g_hash_table_destroy (data->hash);
data->hash = g_hash_table_new_full (data->hash_func,
data->key_equal_func,
data->key_destroy_func,
(GDestroyNotify) free_gvalue);
}
guint
moo_data_size (MooData *data)
{
g_return_val_if_fail (data != NULL, 0);
return g_hash_table_size (data->hash);
}
gboolean
moo_data_has_key (MooData *data,
gpointer key)
{
g_return_val_if_fail (data != NULL, FALSE);
return g_hash_table_lookup (data->hash, key) != NULL;
}
GType
moo_data_get_value_type (MooData *data,
gpointer key)
{
GValue *value;
g_return_val_if_fail (data != NULL, 0);
value = g_hash_table_lookup (data->hash, key);
return value ? G_VALUE_TYPE (value) : G_TYPE_NONE;
}
gboolean
moo_data_get_value (MooData *data,
gpointer key,
GValue *dest)
{
GValue *value;
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (!dest || dest->g_type == 0, FALSE);
value = g_hash_table_lookup (data->hash, key);
if (value && dest)
{
g_value_init (dest, G_VALUE_TYPE (value));
g_value_copy (value, dest);
}
return value != NULL;
}
gpointer
moo_data_get_ptr (MooData *data,
gpointer key)
{
MooPtr *ptr;
GValue *value;
g_return_val_if_fail (data != NULL, NULL);
value = g_hash_table_lookup (data->hash, key);
if (value)
{
g_return_val_if_fail (G_VALUE_TYPE (value) == MOO_TYPE_PTR, NULL);
ptr = g_value_get_boxed (value);
return ptr->data;
}
else
{
return NULL;
}
}
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