static GObject*
base_object_constructor  (GType                  type,
			  guint                  n_construct_properties,
			  GObjectConstructParam *construct_properties)
{
  /* The constructor is the one place where a GParamSpecOverride is visible
   * to the outside world, so we do a bunch of checks here
   */
  GValue value1 = { 0, };
  GValue value2 = { 0, };
  GParamSpec *pspec;

  g_assert (n_construct_properties == 1);

  pspec = construct_properties->pspec;

  /* Check we got the param spec we expected
   */
  g_assert (G_IS_PARAM_SPEC_OVERRIDE (pspec));
  g_assert (pspec->param_id == BASE_PROP1);
  g_assert (strcmp (g_param_spec_get_name (pspec), "prop1") == 0);
  g_assert (g_param_spec_get_redirect_target (pspec) == iface_spec1);

  /* Test redirection of the nick and blurb to the redirect target
   */
  g_assert (strcmp (g_param_spec_get_nick (pspec), "Prop1") == 0);
  g_assert (strcmp (g_param_spec_get_blurb (pspec), "Property 1") == 0);

  /* Test forwarding of the various GParamSpec methods to the redirect target
   */
  g_value_init (&value1, G_TYPE_INT);
  g_value_init (&value2, G_TYPE_INT);
  
  g_param_value_set_default (pspec, &value1);
  g_assert (g_value_get_int (&value1) == 42);

  g_value_reset (&value1);
  g_value_set_int (&value1, 0x10000);
  g_assert (g_param_value_validate (pspec, &value1));
  g_assert (g_value_get_int (&value1) == 0xFFFF);
  g_assert (!g_param_value_validate (pspec, &value1));
  
  g_value_reset (&value1);
  g_value_set_int (&value1, 1);
  g_value_set_int (&value2, 2);
  g_assert (g_param_values_cmp (pspec, &value1, &value2) < 0);
  g_assert (g_param_values_cmp (pspec, &value2, &value1) > 0);
  
  g_value_unset (&value1);
  g_value_unset (&value2);

  return base_parent_class->constructor (type,
					 n_construct_properties,
					 construct_properties);
}
Exemple #2
0
static void
e_bind_properties_transfer (GObject *src_object,
                            GParamSpec *src_pspec,
                            GObject *dst_object,
                            GParamSpec *dst_pspec,
                            GlideBindingTransform  transform,
                            gpointer user_data)
{
	const gchar *src_name;
	const gchar *dst_name;
	gboolean result;
	GValue src_value = { 0, };
	GValue dst_value = { 0, };

	src_name = g_param_spec_get_name (src_pspec);
	dst_name = g_param_spec_get_name (dst_pspec);

	g_value_init (&src_value, G_PARAM_SPEC_VALUE_TYPE (src_pspec));
	g_object_get_property (src_object, src_name, &src_value);

	g_value_init (&dst_value, G_PARAM_SPEC_VALUE_TYPE (dst_pspec));
	result = (*transform) (&src_value, &dst_value, user_data);

	g_value_unset (&src_value);

	g_return_if_fail (result);

	g_param_value_validate (dst_pspec, &dst_value);
	g_object_set_property (dst_object, dst_name, &dst_value);
	g_value_unset (&dst_value);
}
Exemple #3
0
/* --- functions --- */
void
_bst_skin_config_init (void)
{
  BstSkinConfig *skin_config;
  GValue *value;
  SfiRec *rec;

  g_return_if_fail (global_skin_config == NULL);

  /* global config record description */
  pspec_skin_config = sfi_pspec_rec ("beast-skin-config-v1", NULL, NULL,
                                     bst_skin_config_fields, SFI_PARAM_STANDARD);
  g_param_spec_ref (pspec_skin_config);
  g_param_spec_sink (pspec_skin_config);
  /* create empty config record */
  rec = sfi_rec_new ();
  value = sfi_value_rec (rec);
  /* fill out missing values with defaults */
  g_param_value_validate (pspec_skin_config, value);
  /* install global config */
  skin_config = bst_skin_config_from_rec (rec);
  global_skin_config = skin_config;
  /* cleanup */
  sfi_value_free (value);
  sfi_rec_unref (rec);
}
static VALUE
value_validate_body(struct validate_arg* arg)
{
    VALUE ret;
    gboolean b;

    rbgobj_rvalue_to_gvalue(arg->obj, arg->value);
    b = g_param_value_validate(arg->pspec, arg->value);
    ret = rbgobj_gvalue_to_rvalue(arg->value);
    return rb_ary_new3(2, CBOOL2RVAL(b), ret);
}
static void
test_param_spec_char (void)
{
  GParamSpec *pspec;
  GValue value = { 0, };
  gboolean modified;
 
  pspec = g_param_spec_char ("char", "nick", "blurb",
			     20, 40, 30, G_PARAM_READWRITE);

  //g_param_spec_ref_force_floating(pspec);			     
  //g_assert(g_param_spec_is_floating(pspec)); 			     
  g_param_spec_ref_sink(pspec);

  g_assert (strcmp (g_param_spec_get_name (pspec), "char") == 0);
  g_assert (strcmp (g_param_spec_get_nick (pspec), "nick") == 0);
  g_assert (strcmp (g_param_spec_get_blurb (pspec), "blurb") == 0);

  g_value_init (&value, G_TYPE_CHAR);
  g_value_set_char (&value, 30);

  g_assert (g_param_value_defaults (pspec, &value));
  
  g_value_set_char (&value, 0);
  modified = g_param_value_validate (pspec, &value);
  g_assert (modified && g_value_get_char (&value) == 20);

  g_value_set_char (&value, 20);
  modified = g_param_value_validate (pspec, &value);
  g_assert (!modified && g_value_get_char (&value) == 20);

  g_value_set_char (&value, 40);
  modified = g_param_value_validate (pspec, &value);
  g_assert (!modified && g_value_get_char (&value) == 40);

  g_value_set_char (&value, 60);
  modified = g_param_value_validate (pspec, &value);
  g_assert (modified && g_value_get_char (&value) == 40);

  g_param_spec_unref (pspec);
}
static void
test_param_spec_gtype (void)
{
  GParamSpec *pspec;
  GValue value = { 0, };
  gboolean modified;
  
  pspec = g_param_spec_gtype ("gtype", "nick", "blurb",
			      G_TYPE_PARAM, G_PARAM_READWRITE);
  
  g_value_init (&value, G_TYPE_GTYPE);
  g_value_set_gtype (&value, G_TYPE_PARAM);

  g_assert (g_param_value_defaults (pspec, &value));
  
  g_value_set_gtype (&value, G_TYPE_INT);
  modified = g_param_value_validate (pspec, &value);
  g_assert (modified && g_value_get_gtype (&value) == G_TYPE_PARAM);

  g_value_set_gtype (&value, G_TYPE_PARAM_INT);
  modified = g_param_value_validate (pspec, &value);
  g_assert (!modified && g_value_get_gtype (&value) == G_TYPE_PARAM_INT);
}
Exemple #7
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static inline void
tidy_stylable_set_property_internal (TidyStylable       *stylable,
                                     GParamSpec         *pspec,
                                     const GValue       *value,
                                     GObjectNotifyQueue *nqueue)
{
  GValue tmp_value = { 0, };

  g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));

  if (!g_value_transform (value, &tmp_value))
    g_warning ("unable to set property `%s' of type `%s' from value of type `%s'",
               pspec->name,
               g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
               G_VALUE_TYPE_NAME (value));
  else if (g_param_value_validate (pspec, &tmp_value) &&
           !(pspec->flags & G_PARAM_LAX_VALIDATION))
    {
      gchar *contents = g_strdup_value_contents (value);

      g_warning ("value \"%s\" of type `%s' is invalid or out of range for property `%s' of type `%s'",
                 contents,
                 G_VALUE_TYPE_NAME (value),
                 pspec->name,
                 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
      g_free (contents);
    }
  else
    {
      TidyStyle *style = tidy_stylable_get_style (stylable);
      gchar *real_name;

      real_name = g_strconcat (g_param_spec_get_qdata (pspec, quark_real_owner),
                               "::",
                               pspec->name,
                               NULL);

      if (!tidy_style_has_property (style, real_name))
        tidy_style_add_property (style, real_name,
                                 G_PARAM_SPEC_VALUE_TYPE (pspec));

      tidy_style_set_property (style, real_name, &tmp_value);
      g_object_notify_queue_add (G_OBJECT (stylable), nqueue, pspec);

      g_free (real_name);
    }

  g_value_unset (&tmp_value);
}
static gboolean
param_value_array_validate (GParamSpec *pspec,
			    GValue     *value)
{
  GParamSpecValueArray *aspec = G_PARAM_SPEC_VALUE_ARRAY (pspec);
  GValueArray *value_array = value->data[0].v_pointer;
  guint changed = 0;

  if (!value->data[0].v_pointer && aspec->fixed_n_elements)
    value->data[0].v_pointer = g_value_array_new (aspec->fixed_n_elements);

  if (value->data[0].v_pointer)
    {
      /* ensure array size validity */
      changed += value_array_ensure_size (value_array, aspec->fixed_n_elements);
      
      /* ensure array values validity against a present element spec */
      if (aspec->element_spec)
	{
	  GParamSpec *element_spec = aspec->element_spec;
	  guint i;
	  
	  for (i = 0; i < value_array->n_values; i++)
	    {
	      GValue *element = value_array->values + i;
	      
	      /* need to fixup value type, or ensure that the array value is initialized at all */
	      if (!g_value_type_compatible (G_VALUE_TYPE (element), G_PARAM_SPEC_VALUE_TYPE (element_spec)))
		{
		  if (G_VALUE_TYPE (element) != 0)
		    g_value_unset (element);
		  g_value_init (element, G_PARAM_SPEC_VALUE_TYPE (element_spec));
		  g_param_value_set_default (element_spec, element);
		  changed++;
		}
	      /* validate array value against element_spec */
	      changed += g_param_value_validate (element_spec, element);
	    }
	}
    }

  return changed;
}
Exemple #9
0
static gboolean
set_prop(GeglNode *t, const gchar *port, GParamSpec *paramspec, GValue *value)  {
    GType target_type = G_PARAM_SPEC_VALUE_TYPE(paramspec);
    GValue dest_value = {0,};
    gboolean success;

    g_value_init(&dest_value, target_type);

    success = g_param_value_convert(paramspec, value, &dest_value, FALSE);
    if (success) {
        gegl_node_set_property(t, port, &dest_value);
        return TRUE;
    }

    if (gvalue_from_string(value, target_type, &dest_value)) {
        g_param_value_validate(paramspec, &dest_value);
        gegl_node_set_property(t, port, &dest_value);
        return TRUE;
    }
    return FALSE;
}
Exemple #10
0
static void
on_target_notify (GObject    *gobject,
                  GParamSpec *pspec,
                  GBinding   *binding)
{
  const gchar *p_name;
  GValue from_value = G_VALUE_INIT;
  GValue to_value = G_VALUE_INIT;
  gboolean res;

  if (binding->is_frozen)
    return;

  p_name = g_intern_string (pspec->name);

  if (p_name != binding->target_property)
    return;

  g_value_init (&from_value, G_PARAM_SPEC_VALUE_TYPE (binding->target_pspec));
  g_value_init (&to_value, G_PARAM_SPEC_VALUE_TYPE (binding->source_pspec));

  g_object_get_property (binding->target, binding->target_pspec->name, &from_value);

  res = binding->transform_t2s (binding,
                                &from_value,
                                &to_value,
                                binding->transform_data);
  if (res)
    {
      binding->is_frozen = TRUE;

      g_param_value_validate (binding->source_pspec, &to_value);
      g_object_set_property (binding->source, binding->source_pspec->name, &to_value);

      binding->is_frozen = FALSE;
    }

  g_value_unset (&from_value);
  g_value_unset (&to_value);
}
Exemple #11
0
/* --- functions --- */
void
_bst_msg_absorb_config_init (void)
{
  g_return_if_fail (global_msg_absorb_config == NULL);

  /* global config record description */
  pspec_msg_absorb_config = sfi_pspec_seq ("beast-msg-absorb-config-v1", NULL, NULL,
                                           sfi_pspec_rec ("mstring", NULL, NULL, bst_msg_absorb_string_fields, SFI_PARAM_STANDARD),
                                           SFI_PARAM_STANDARD);
  g_param_spec_ref (pspec_msg_absorb_config);
  g_param_spec_sink (pspec_msg_absorb_config);
  /* create empty config record */
  SfiSeq *seq = sfi_seq_new ();
  GValue *value = sfi_value_seq (seq);
  /* fill out missing values with defaults */
  g_param_value_validate (pspec_msg_absorb_config, value);
  /* install global config */
  BstMsgAbsorbStringSeq *mconfig = bst_msg_absorb_string_seq_from_seq (seq);
  global_msg_absorb_config = mconfig;
  /* cleanup */
  sfi_value_free (value);
  sfi_seq_unref (seq);
}
P_INVOKE void
bp_set_volume (BansheePlayer *player, gdouble volume)
{
    GParamSpec *volume_spec;
    GValue value = { 0, };
    GstElement *v;

    g_return_if_fail (IS_BANSHEE_PLAYER (player));

    // playbin will either control the volume property of the audiosinks real
    // sink element case the audiosink doesn't have one it will control a
    // volume element it created itself.
    // Unfortunately if playbin creates a volume element it will be before our
    // audiosink and thus before our equalizer and replaygain, which is
    // undesirable because of latency issues (Most likely they insert too many
    // queues). So only use the playbin volume support when we know our sink
    // supports volume control

    if (player->audiosink_has_volume) {
      v = player->playbin;
    } else {
      v = player->volume;
    }

    g_return_if_fail (GST_IS_ELEMENT(v));

    player->current_volume = CLAMP (volume, 0.0, 1.0);
    volume_spec = g_object_class_find_property (G_OBJECT_GET_CLASS (v), "volume");
    g_value_init (&value, G_TYPE_DOUBLE);
    g_value_set_double (&value, player->current_volume);
    g_param_value_validate (volume_spec, &value);

    g_object_set_property (G_OBJECT (v), "volume", &value);
    g_value_unset (&value);
    _bp_rgvolume_print_volume(player);
}
static void
gimp_operation_tool_color_picked (GimpImageMapTool  *im_tool,
                                  gpointer           identifier,
                                  gdouble            x,
                                  gdouble            y,
                                  const Babl        *sample_format,
                                  const GimpRGB     *color)
{
    GimpOperationTool  *tool = GIMP_OPERATION_TOOL (im_tool);
    gchar             **pspecs;

    pspecs = g_strsplit (identifier, ":", 2);

    if (pspecs[1])
    {
        GimpImageMapOptions *options      = GIMP_IMAGE_MAP_TOOL_GET_OPTIONS (tool);
        GimpDrawable        *drawable     = GIMP_TOOL (im_tool)->drawable;
        GObjectClass        *object_class = G_OBJECT_GET_CLASS (im_tool->config);
        GParamSpec          *pspec_x;
        GParamSpec          *pspec_y;
        gint                 width        = 1;
        gint                 height       = 1;

        if (drawable)
        {
            gint off_x, off_y;

            gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);

            x -= off_x;
            y -= off_y;

            switch (options->region)
            {
            case GIMP_IMAGE_MAP_REGION_SELECTION:
                if (gimp_item_mask_intersect (GIMP_ITEM (drawable),
                                              &off_x, &off_y, &width, &height))
                {
                    x -= off_x;
                    y -= off_y;
                }
                break;

            case GIMP_IMAGE_MAP_REGION_DRAWABLE:
                width  = gimp_item_get_width  (GIMP_ITEM (drawable));
                height = gimp_item_get_height (GIMP_ITEM (drawable));
                break;
            }
        }

        pspec_x = g_object_class_find_property (object_class, pspecs[0]);
        pspec_y = g_object_class_find_property (object_class, pspecs[1]);

        if (pspec_x && pspec_y &&
                G_PARAM_SPEC_TYPE (pspec_x) == G_PARAM_SPEC_TYPE (pspec_y))
        {
            GValue value_x = G_VALUE_INIT;
            GValue value_y = G_VALUE_INIT;

            g_value_init (&value_x, G_PARAM_SPEC_VALUE_TYPE (pspec_x));
            g_value_init (&value_y, G_PARAM_SPEC_VALUE_TYPE (pspec_y));

#define HAS_KEY(p,k,v) gimp_gegl_param_spec_has_key (p, k, v)

            if (HAS_KEY (pspec_x, "unit", "relative-coordinate") &&
                    HAS_KEY (pspec_y, "unit", "relative-coordinate"))
            {
                x /= (gdouble) width;
                y /= (gdouble) height;
            }

            if (G_IS_PARAM_SPEC_INT (pspec_x))
            {
                g_value_set_int (&value_x, x);
                g_value_set_int (&value_y, y);

                g_param_value_validate (pspec_x, &value_x);
                g_param_value_validate (pspec_y, &value_y);

                g_object_set (im_tool->config,
                              pspecs[0], g_value_get_int (&value_x),
                              pspecs[1], g_value_get_int (&value_y),
                              NULL);
            }
            else if (G_IS_PARAM_SPEC_DOUBLE (pspec_x))
            {
                g_value_set_double (&value_x, x);
                g_value_set_double (&value_y, y);

                g_param_value_validate (pspec_x, &value_x);
                g_param_value_validate (pspec_y, &value_y);

                g_object_set (im_tool->config,
                              pspecs[0], g_value_get_double (&value_x),
                              pspecs[1], g_value_get_double (&value_y),
                              NULL);
            }
            else
            {
                g_warning ("%s: unhandled param spec of type %s",
                           G_STRFUNC, G_PARAM_SPEC_TYPE_NAME (pspec_x));
            }

            g_value_unset (&value_x);
            g_value_unset (&value_y);
        }
    }
    else
    {
        g_object_set (im_tool->config,
                      pspecs[0], color,
                      NULL);
    }

    g_strfreev (pspecs);
}
Exemple #14
0
static gboolean
gimp_procedure_validate_args (GimpProcedure  *procedure,
                              GParamSpec    **param_specs,
                              gint            n_param_specs,
                              GValueArray    *args,
                              gboolean        return_vals,
                              GError        **error)
{
  gint i;

  for (i = 0; i < MIN (args->n_values, n_param_specs); i++)
    {
      GValue     *arg       = &args->values[i];
      GParamSpec *pspec     = param_specs[i];
      GType       arg_type  = G_VALUE_TYPE (arg);
      GType       spec_type = G_PARAM_SPEC_VALUE_TYPE (pspec);

      if (arg_type != spec_type)
        {
          if (return_vals)
            {
              g_set_error (error,
                           GIMP_PDB_ERROR, GIMP_PDB_INVALID_RETURN_VALUE,
                           _("Procedure '%s' returned a wrong value type "
                             "for return value '%s' (#%d). "
                             "Expected %s, got %s."),
                           gimp_object_get_name (procedure),
                           g_param_spec_get_name (pspec),
                           i + 1, g_type_name (spec_type),
                           g_type_name (arg_type));
            }
          else
            {
              g_set_error (error,
                           GIMP_PDB_ERROR, GIMP_PDB_INVALID_ARGUMENT,
                           _("Procedure '%s' has been called with a "
                             "wrong value type for argument '%s' (#%d). "
                             "Expected %s, got %s."),
                           gimp_object_get_name (procedure),
                           g_param_spec_get_name (pspec),
                           i + 1, g_type_name (spec_type),
                           g_type_name (arg_type));
            }

          return FALSE;
        }
      else if (! (pspec->flags & GIMP_PARAM_NO_VALIDATE))
        {
          GValue string_value = { 0, };

          g_value_init (&string_value, G_TYPE_STRING);

          if (g_value_type_transformable (arg_type, G_TYPE_STRING))
            g_value_transform (arg, &string_value);
          else
            g_value_set_static_string (&string_value,
                                       "<not transformable to string>");

          if (g_param_value_validate (pspec, arg))
            {
              if (GIMP_IS_PARAM_SPEC_DRAWABLE_ID (pspec) &&
                  g_value_get_int (arg) == -1)
                {
                  if (return_vals)
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_RETURN_VALUE,
                                   _("Procedure '%s' returned an "
                                     "invalid ID for argument '%s'. "
                                     "Most likely a plug-in is trying "
                                     "to work on a layer that doesn't "
                                     "exist any longer."),
                                   gimp_object_get_name (procedure),
                                   g_param_spec_get_name (pspec));
                    }
                  else
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_ARGUMENT,
                                   _("Procedure '%s' has been called with an "
                                     "invalid ID for argument '%s'. "
                                     "Most likely a plug-in is trying "
                                     "to work on a layer that doesn't "
                                     "exist any longer."),
                                   gimp_object_get_name (procedure),
                                   g_param_spec_get_name (pspec));
                    }
                }
              else if (GIMP_IS_PARAM_SPEC_IMAGE_ID (pspec) &&
                       g_value_get_int (arg) == -1)
                {
                  if (return_vals)
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_RETURN_VALUE,
                                   _("Procedure '%s' returned an "
                                     "invalid ID for argument '%s'. "
                                     "Most likely a plug-in is trying "
                                     "to work on an image that doesn't "
                                     "exist any longer."),
                                   gimp_object_get_name (procedure),
                                   g_param_spec_get_name (pspec));
                    }
                  else
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_ARGUMENT,
                                   _("Procedure '%s' has been called with an "
                                     "invalid ID for argument '%s'. "
                                     "Most likely a plug-in is trying "
                                     "to work on an image that doesn't "
                                     "exist any longer."),
                                   gimp_object_get_name (procedure),
                                   g_param_spec_get_name (pspec));
                    }
                }
              else
                {
                  const gchar *value = g_value_get_string (&string_value);

                  if (value == NULL)
                    value = "(null)";

                  if (return_vals)
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_RETURN_VALUE,
                                   _("Procedure '%s' returned "
                                     "'%s' as return value '%s' "
                                     "(#%d, type %s). "
                                     "This value is out of range."),
                                   gimp_object_get_name (procedure),
                                   value,
                                   g_param_spec_get_name (pspec),
                                   i + 1, g_type_name (spec_type));
                    }
                  else
                    {
                      g_set_error (error,
                                   GIMP_PDB_ERROR, GIMP_PDB_INVALID_ARGUMENT,
                                   _("Procedure '%s' has been called with "
                                     "value '%s' for argument '%s' "
                                     "(#%d, type %s). "
                                     "This value is out of range."),
                                   gimp_object_get_name (procedure),
                                   value,
                                   g_param_spec_get_name (pspec),
                                   i + 1, g_type_name (spec_type));
                    }
                }

              return FALSE;
            }

          g_value_unset (&string_value);
        }
    }

  return TRUE;
}
Exemple #15
0
static void
gimp_operation_tool_color_picked (GimpFilterTool  *filter_tool,
                                  gpointer         identifier,
                                  gdouble          x,
                                  gdouble          y,
                                  const Babl      *sample_format,
                                  const GimpRGB   *color)
{
  gchar **pspecs = g_strsplit (identifier, ":", 2);

  if (pspecs[1])
    {
      GObjectClass  *object_class = G_OBJECT_GET_CLASS (filter_tool->config);
      GParamSpec    *pspec_x;
      GParamSpec    *pspec_y;
      gint           off_x, off_y;
      GeglRectangle  area;

      gimp_filter_tool_get_drawable_area (filter_tool, &off_x, &off_y, &area);

      x -= off_x + area.x;
      y -= off_y + area.y;

      pspec_x = g_object_class_find_property (object_class, pspecs[0]);
      pspec_y = g_object_class_find_property (object_class, pspecs[1]);

      if (pspec_x && pspec_y &&
          G_PARAM_SPEC_TYPE (pspec_x) == G_PARAM_SPEC_TYPE (pspec_y))
        {
          GValue value_x = G_VALUE_INIT;
          GValue value_y = G_VALUE_INIT;

          g_value_init (&value_x, G_PARAM_SPEC_VALUE_TYPE (pspec_x));
          g_value_init (&value_y, G_PARAM_SPEC_VALUE_TYPE (pspec_y));

#define HAS_KEY(p,k,v) gimp_gegl_param_spec_has_key (p, k, v)

          if (HAS_KEY (pspec_x, "unit", "relative-coordinate") &&
              HAS_KEY (pspec_y, "unit", "relative-coordinate"))
            {
              x /= (gdouble) area.width;
              y /= (gdouble) area.height;
            }

          if (G_IS_PARAM_SPEC_INT (pspec_x))
            {
              g_value_set_int (&value_x, x);
              g_value_set_int (&value_y, y);

              g_param_value_validate (pspec_x, &value_x);
              g_param_value_validate (pspec_y, &value_y);

              g_object_set (filter_tool->config,
                            pspecs[0], g_value_get_int (&value_x),
                            pspecs[1], g_value_get_int (&value_y),
                            NULL);
            }
          else if (G_IS_PARAM_SPEC_DOUBLE (pspec_x))
            {
              g_value_set_double (&value_x, x);
              g_value_set_double (&value_y, y);

              g_param_value_validate (pspec_x, &value_x);
              g_param_value_validate (pspec_y, &value_y);

              g_object_set (filter_tool->config,
                            pspecs[0], g_value_get_double (&value_x),
                            pspecs[1], g_value_get_double (&value_y),
                            NULL);
            }
          else
            {
              g_warning ("%s: unhandled param spec of type %s",
                         G_STRFUNC, G_PARAM_SPEC_TYPE_NAME (pspec_x));
            }

          g_value_unset (&value_x);
          g_value_unset (&value_y);
        }
    }
  else
    {
      g_object_set (filter_tool->config,
                    pspecs[0], color,
                    NULL);
    }

  g_strfreev (pspecs);
}
/**
 * nm_g_object_set_property:
 * @object: the target object
 * @property_name: the property name
 * @value: the #GValue to set
 * @error: (allow-none): optional error argument
 *
 * A reimplementation of g_object_set_property(), but instead
 * returning an error instead of logging a warning. All g_object_set*()
 * versions in glib require you to not pass invalid types or they will
 * log a g_warning() -- without reporting an error. We don't want that,
 * so we need to hack error checking around it.
 *
 * Returns: whether the value was successfully set.
 */
gboolean
nm_g_object_set_property (GObject *object,
                          const gchar  *property_name,
                          const GValue *value,
                          GError **error)
{
	GParamSpec *pspec;
	nm_auto_unset_gvalue GValue tmp_value = G_VALUE_INIT;
	GObjectClass *klass;

	g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
	g_return_val_if_fail (property_name != NULL, FALSE);
	g_return_val_if_fail (G_IS_VALUE (value), FALSE);
	g_return_val_if_fail (!error || !*error, FALSE);

	/* g_object_class_find_property() does g_param_spec_get_redirect_target(),
	 * where we differ from a plain g_object_set_property(). */
	pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (object), property_name);

	if (!pspec) {
		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("object class '%s' has no property named '%s'"),
		             G_OBJECT_TYPE_NAME (object),
		             property_name);
		return FALSE;
	}
	if (!(pspec->flags & G_PARAM_WRITABLE)) {
		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("property '%s' of object class '%s' is not writable"),
		             pspec->name,
		             G_OBJECT_TYPE_NAME (object));
		return FALSE;
	}
	if ((pspec->flags & G_PARAM_CONSTRUCT_ONLY)) {
		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("construct property \"%s\" for object '%s' can't be set after construction"),
		             pspec->name, G_OBJECT_TYPE_NAME (object));
		return FALSE;
	}

	klass = g_type_class_peek (pspec->owner_type);
	if (klass == NULL) {
		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("'%s::%s' is not a valid property name; '%s' is not a GObject subtype"),
		            g_type_name (pspec->owner_type), pspec->name, g_type_name (pspec->owner_type));
		return FALSE;
	}

	/* provide a copy to work from, convert (if necessary) and validate */
	g_value_init (&tmp_value, pspec->value_type);
	if (!g_value_transform (value, &tmp_value)) {
		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("unable to set property '%s' of type '%s' from value of type '%s'"),
		             pspec->name,
		             g_type_name (pspec->value_type),
		             G_VALUE_TYPE_NAME (value));
		return FALSE;
	}
	if (   g_param_value_validate (pspec, &tmp_value)
	    && !(pspec->flags & G_PARAM_LAX_VALIDATION)) {
		gs_free char *contents = g_strdup_value_contents (value);

		g_set_error (error, NM_UTILS_ERROR, NM_UTILS_ERROR_UNKNOWN,
		             _("value \"%s\" of type '%s' is invalid or out of range for property '%s' of type '%s'"),
		             contents,
		             G_VALUE_TYPE_NAME (value),
		             pspec->name,
		             g_type_name (pspec->value_type));
		return FALSE;
	}

	g_object_set_property (object, property_name, &tmp_value);
	return TRUE;
}
static void
terminal_profile_gsettings_notify_cb (GSettings *settings,
                                      gchar *key,
                                      gpointer     user_data)
{
	TerminalProfile *profile = TERMINAL_PROFILE (user_data);
	TerminalProfilePrivate *priv = profile->priv;
	TerminalProfileClass *klass;
	GVariant *settings_value;
	GParamSpec *pspec;
	GValue value = { 0, };
	gboolean equal;
	gboolean force_set = FALSE;

	if (!key) return;

	_terminal_debug_print (TERMINAL_DEBUG_PROFILE,
	                       "GSettings notification for key %s [%s]\n",
	                       key,
	                       g_settings_is_writable (settings, key) ? "writable" : "LOCKED");

	klass = TERMINAL_PROFILE_GET_CLASS (profile);
	pspec = g_hash_table_lookup (klass->gsettings_keys, key);
	if (!pspec)
		return; /* ignore unknown keys, for future extensibility */

	priv->locked[pspec->param_id] = !g_settings_is_writable (settings, key);

	settings_value = g_settings_get_value (settings, key);
	if (!settings_value)
		return;

	g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));

	if (G_IS_PARAM_SPEC_BOOLEAN (pspec))
	{
		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_BOOLEAN))
			goto out;

		g_value_set_boolean (&value, g_variant_get_boolean (settings_value));
	}
	else if (G_IS_PARAM_SPEC_STRING (pspec))
	{
		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_STRING))
			goto out;

		g_value_set_string (&value, g_variant_get_string (settings_value, NULL));
	}
	else if (G_IS_PARAM_SPEC_ENUM (pspec))
	{

		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_STRING))
			goto out;

		g_value_set_enum (&value, g_settings_get_enum (settings, key));
	}
	else if (G_PARAM_SPEC_VALUE_TYPE (pspec) == GDK_TYPE_COLOR)
	{
		GdkColor color;

		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_STRING))
			goto out;

		if (!gdk_color_parse (g_variant_get_string (settings_value, NULL), &color))
			goto out;

		g_value_set_boxed (&value, &color);
	}
	else if (G_PARAM_SPEC_VALUE_TYPE (pspec) == PANGO_TYPE_FONT_DESCRIPTION)
	{
		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_STRING))
			goto out;

		g_value_take_boxed (&value, pango_font_description_from_string (g_variant_get_string (settings_value, NULL)));
	}
	else if (G_IS_PARAM_SPEC_DOUBLE (pspec))
	{
		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_DOUBLE))
			goto out;

		g_value_set_double (&value, g_variant_get_double (settings_value));
	}
	else if (G_IS_PARAM_SPEC_INT (pspec))
	{
		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_INT16) &&
		    !g_variant_is_of_type (settings_value, G_VARIANT_TYPE_INT32) &&
		    !g_variant_is_of_type (settings_value, G_VARIANT_TYPE_INT64))
			goto out;

		g_value_set_int (&value, g_settings_get_int(settings, key));
	}
	else if (G_IS_PARAM_SPEC_VALUE_ARRAY (pspec) &&
	         G_PARAM_SPEC_VALUE_TYPE (G_PARAM_SPEC_VALUE_ARRAY (pspec)->element_spec) == GDK_TYPE_COLOR)
	{
		char **color_strings;
		GdkColor *colors;
		int n_colors, i;

		if (!g_variant_is_of_type (settings_value, G_VARIANT_TYPE_STRING))
			goto out;

		color_strings = g_strsplit (g_variant_get_string (settings_value, NULL), ":", -1);
		if (!color_strings)
			goto out;

		n_colors = g_strv_length (color_strings);
		colors = g_new0 (GdkColor, n_colors);
		for (i = 0; i < n_colors; ++i)
		{
			if (!gdk_color_parse (color_strings[i], &colors[i]))
				continue; /* ignore errors */
		}
		g_strfreev (color_strings);

		/* We continue even with a palette size != TERMINAL_PALETTE_SIZE,
		 * so we can change the palette size in future versions without
		 * causing too many issues.
		 */
		set_value_from_palette (&value, colors, n_colors);
		g_free (colors);
	}
	else
	{
		g_printerr ("Unhandled value type %s of pspec %s\n", g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)), pspec->name);
		goto out;
	}

	if (g_param_value_validate (pspec, &value))
	{
		_terminal_debug_print (TERMINAL_DEBUG_PROFILE,
		                       "Invalid value in GSettings for key %s was changed to comply with pspec %s\n",
		                       key, pspec->name);

		force_set = TRUE;
	}

	/* Only set the property if the value is different than our current value,
	 * so we don't go into an infinite loop.
	 */
	equal = values_equal (pspec, &value, g_value_array_get_nth (priv->properties, pspec->param_id));
#ifdef MATE_ENABLE_DEBUG
	_TERMINAL_DEBUG_IF (TERMINAL_DEBUG_PROFILE)
	{
		if (!equal)
			_terminal_debug_print (TERMINAL_DEBUG_PROFILE,
			                       "Setting property %s to a different value\n"
			                       "  now: %s\n"
			                       "  new: %s\n",
			                       pspec->name,
			                       g_strdup_value_contents (g_value_array_get_nth (priv->properties, pspec->param_id)),
			                       g_strdup_value_contents (&value));
	}
#endif

	if (!equal || force_set)
	{
		priv->gsettings_notification_pspec = pspec;
		g_object_set_property (G_OBJECT (profile), pspec->name, &value);
		priv->gsettings_notification_pspec = NULL;
	}

out:
	/* FIXME: if we arrive here through goto in the error cases,
	 * should we maybe reset the property to its default value?
	 */

	g_value_unset (&value);
	g_variant_unref (settings_value);
}