/* * mooutils-gobject.c * * Copyright (C) 2004-2005 by Yevgen Muntyan * * 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 #include #include #include /*****************************************************************************/ /* 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 || v > G_MAXINT || v < G_MININT) return FALSE; 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 || v > G_MAXUINT) return FALSE; 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 (¶m, &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 (¶m.value, G_PARAM_SPEC_VALUE_TYPE (pspec)); G_VALUE_COLLECT (¶m.value, var_args, 0, &error); if (error) { g_critical ("%s: %s", G_STRLOC, error); g_free (error); g_value_unset (¶m.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 (¶m, &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 (¶m.value, type); G_VALUE_COLLECT (¶m.value, var_args, 0, &error); if (error) { g_critical ("%s: %s", G_STRLOC, error); g_free (error); g_value_unset (¶m.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 (¶m.value, G_PARAM_SPEC_VALUE_TYPE (pspec)); G_VALUE_COLLECT (¶m.value, var_args, 0, &error); if (error) { g_critical ("%s: %s", G_STRLOC, error); g_free (error); g_value_unset (¶m.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; break; 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; }