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gimp/app/widgets/gimppropwidgets.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimppropwidgets.c
* Copyright (C) 2002-2004 Michael Natterer <mitch@gimp.org>
* Sven Neumann <sven@gimp.org>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpcontext.h"
#include "core/gimpviewable.h"
#include "gimpcolorpanel.h"
#include "gimpdnd.h"
#include "gimpview.h"
#include "gimppropwidgets.h"
#include "gimpwidgets-constructors.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
/* utility function prototypes */
static void set_param_spec (GObject *object,
GtkWidget *widget,
GParamSpec *param_spec);
static GParamSpec * get_param_spec (GObject *object);
static GParamSpec * find_param_spec (GObject *object,
const gchar *property_name,
const gchar *strloc);
static GParamSpec * check_param_spec (GObject *object,
const gchar *property_name,
GType type,
const gchar *strloc);
static GParamSpec * check_param_spec_w (GObject *object,
const gchar *property_name,
GType type,
const gchar *strloc);
static void connect_notify (GObject *config,
const gchar *property_name,
GCallback callback,
gpointer callback_data);
/*********************/
/* expanding frame */
/*********************/
GtkWidget *
gimp_prop_expanding_frame_new (GObject *config,
const gchar *property_name,
const gchar *button_label,
GtkWidget *child,
GtkWidget **button)
{
GtkWidget *frame;
GtkWidget *toggle;
gboolean value;
if (! check_param_spec_w (config, property_name,
G_TYPE_PARAM_BOOLEAN, G_STRFUNC))
return NULL;
frame = gimp_frame_new (NULL);
toggle = gimp_prop_check_button_new (config, property_name, button_label);
gtk_frame_set_label_widget (GTK_FRAME (frame), toggle);
gtk_widget_show (toggle);
gtk_container_add (GTK_CONTAINER (frame), child);
g_object_get (config,
property_name, &value,
NULL);
if (value)
gtk_widget_show (child);
g_signal_connect_object (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_set_visible),
child, 0);
if (button)
*button = toggle;
return frame;
}
/****************/
/* paint menu */
/****************/
static void gimp_prop_paint_menu_callback (GtkWidget *widget,
GObject *config);
static void gimp_prop_paint_menu_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *menu);
/**
* gimp_prop_paint_mode_menu_new:
* @config: #GimpConfig object to which property is attached.
* @property_name: Name of Enum property.
* @with_behind_mode: Whether to include "Behind" mode in the menu.
* @with_replace_modes: Whether to include the "Replace", "Erase" and
* "Anti Erase" modes in the menu.
*
* Creates a #GimpPaintModeMenu widget to display and set the specified
* Enum property, for which the enum must be #GimpLayerModeEffects.
*
* Return value: The newly created #GimpPaintModeMenu widget.
*
* Since GIMP 2.4
*/
GtkWidget *
gimp_prop_paint_mode_menu_new (GObject *config,
const gchar *property_name,
gboolean with_behind_mode,
gboolean with_replace_modes)
{
GParamSpec *param_spec;
GtkWidget *menu;
gint value;
param_spec = check_param_spec_w (config, property_name,
G_TYPE_PARAM_ENUM, G_STRFUNC);
if (! param_spec)
return NULL;
g_object_get (config,
property_name, &value,
NULL);
menu = gimp_paint_mode_menu_new (with_behind_mode, with_replace_modes);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (menu),
value,
G_CALLBACK (gimp_prop_paint_menu_callback),
config);
set_param_spec (G_OBJECT (menu), menu, param_spec);
connect_notify (config, property_name,
G_CALLBACK (gimp_prop_paint_menu_notify),
menu);
return menu;
}
static void
gimp_prop_paint_menu_callback (GtkWidget *widget,
GObject *config)
{
GParamSpec *param_spec;
gint value;
param_spec = get_param_spec (G_OBJECT (widget));
if (! param_spec)
return;
if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value))
{
g_object_set (config,
param_spec->name, value,
NULL);
}
}
static void
gimp_prop_paint_menu_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *menu)
{
gint value;
g_object_get (config,
param_spec->name, &value,
NULL);
g_signal_handlers_block_by_func (menu,
gimp_prop_paint_menu_callback,
config);
gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (menu), value);
g_signal_handlers_unblock_by_func (menu,
gimp_prop_paint_menu_callback,
config);
}
/******************/
/* color button */
/******************/
static void gimp_prop_color_button_callback (GtkWidget *widget,
GObject *config);
static void gimp_prop_color_button_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *button);
/**
* gimp_prop_color_button_new:
* @config: #GimpConfig object to which property is attached.
* @property_name: Name of #GimpRGB property.
* @title: Title of the #GimpColorPanel that is to be created
* @width: Width of color button.
* @height: Height of color button.
* @type: How transparency is represented.
*
* Creates a #GimpColorPanel to set and display the value of a #GimpRGB
* property. Pressing the button brings up a color selector dialog.
*
* Return value: A new #GimpColorPanel widget.
*
* Since GIMP 2.4
*/
GtkWidget *
gimp_prop_color_button_new (GObject *config,
const gchar *property_name,
const gchar *title,
gint width,
gint height,
GimpColorAreaType type)
{
GParamSpec *param_spec;
GtkWidget *button;
GimpRGB *value;
param_spec = check_param_spec_w (config, property_name,
GIMP_TYPE_PARAM_RGB, G_STRFUNC);
if (! param_spec)
return NULL;
g_object_get (config,
property_name, &value,
NULL);
button = gimp_color_panel_new (title, value, type, width, height);
g_free (value);
set_param_spec (G_OBJECT (button), button, param_spec);
g_signal_connect (button, "color-changed",
G_CALLBACK (gimp_prop_color_button_callback),
config);
connect_notify (config, property_name,
G_CALLBACK (gimp_prop_color_button_notify),
button);
return button;
}
static void
gimp_prop_color_button_callback (GtkWidget *button,
GObject *config)
{
GParamSpec *param_spec;
GimpRGB value;
param_spec = get_param_spec (G_OBJECT (button));
if (! param_spec)
return;
gimp_color_button_get_color (GIMP_COLOR_BUTTON (button), &value);
g_signal_handlers_block_by_func (config,
gimp_prop_color_button_notify,
button);
g_object_set (config,
param_spec->name, &value,
NULL);
g_signal_handlers_unblock_by_func (config,
gimp_prop_color_button_notify,
button);
}
static void
gimp_prop_color_button_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *button)
{
GimpRGB *value;
g_object_get (config,
param_spec->name, &value,
NULL);
g_signal_handlers_block_by_func (button,
gimp_prop_color_button_callback,
config);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (button), value);
g_free (value);
g_signal_handlers_unblock_by_func (button,
gimp_prop_color_button_callback,
config);
}
/*************/
/* view */
/*************/
static void gimp_prop_view_drop (GtkWidget *menu,
gint x,
gint y,
GimpViewable *viewable,
gpointer data);
static void gimp_prop_view_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *view);
/**
* gimp_prop_view_new:
* @config: #GimpConfig object to which property is attached.
* @context: a #Gimpcontext.
* @property_name: Name of #GimpViewable property.
* @size: Width and height of preview display.
*
* Creates a widget to display the value of a #GimpViewable property.
*
* Return value: A new #GimpView widget.
*
* Since GIMP 2.4
*/
GtkWidget *
gimp_prop_view_new (GObject *config,
const gchar *property_name,
GimpContext *context,
gint size)
{
GParamSpec *param_spec;
GtkWidget *view;
GimpViewable *viewable;
param_spec = check_param_spec_w (config, property_name,
G_TYPE_PARAM_OBJECT, G_STRFUNC);
if (! param_spec)
return NULL;
if (! g_type_is_a (param_spec->value_type, GIMP_TYPE_VIEWABLE))
{
g_warning ("%s: property '%s' of %s is not a GimpViewable",
G_STRFUNC, property_name,
g_type_name (G_TYPE_FROM_INSTANCE (config)));
return NULL;
}
view = gimp_view_new_by_types (context,
GIMP_TYPE_VIEW,
param_spec->value_type,
size, 0, FALSE);
if (! view)
{
g_warning ("%s: cannot create view for type '%s'",
G_STRFUNC, g_type_name (param_spec->value_type));
return NULL;
}
g_object_get (config,
property_name, &viewable,
NULL);
if (viewable)
{
gimp_view_set_viewable (GIMP_VIEW (view), viewable);
g_object_unref (viewable);
}
set_param_spec (G_OBJECT (view), view, param_spec);
gimp_dnd_viewable_dest_add (view, param_spec->value_type,
gimp_prop_view_drop,
config);
connect_notify (config, property_name,
G_CALLBACK (gimp_prop_view_notify),
view);
return view;
}
static void
gimp_prop_view_drop (GtkWidget *view,
gint x,
gint y,
GimpViewable *viewable,
gpointer data)
{
GObject *config;
GParamSpec *param_spec;
param_spec = get_param_spec (G_OBJECT (view));
if (! param_spec)
return;
config = G_OBJECT (data);
g_object_set (config,
param_spec->name, viewable,
NULL);
}
static void
gimp_prop_view_notify (GObject *config,
GParamSpec *param_spec,
GtkWidget *view)
{
GimpViewable *viewable;
g_object_get (config,
param_spec->name, &viewable,
NULL);
gimp_view_set_viewable (GIMP_VIEW (view), viewable);
if (viewable)
g_object_unref (viewable);
}
/***********************
* number pair entry *
***********************/
typedef struct
{
GObject *config;
const gchar *left_number_property;
const gchar *right_number_property;
const gchar *default_left_number_property;
const gchar *default_right_number_property;
const gchar *user_override_property;
} GimpPropNumberPairEntryData;
static void
gimp_prop_number_pair_entry_data_free (GimpPropNumberPairEntryData *data)
{
g_slice_free (GimpPropNumberPairEntryData, data);
}
static void gimp_prop_number_pair_entry_config_notify (GObject *config,
GParamSpec *param_spec,
GtkEntry *entry);
static void gimp_prop_number_pair_entry_number_pair_numbers_changed
(GtkWidget *widget,
GimpPropNumberPairEntryData *data);
static void gimp_prop_number_pair_entry_number_pair_user_override_notify
(GtkWidget *entry,
GParamSpec *param_spec,
GimpPropNumberPairEntryData *data);
/**
* gimp_prop_number_pair_entry_new:
* @config: Object to which properties are attached.
* @left_number_property: Name of double property for left number.
* @right_number_property: Name of double property for right number.
* @default_left_number_property: Name of double property for default left number.
* @default_right_number_property: Name of double property for default right number.
* @user_override_property: Name of boolean property for user override mode.
* @connect_numbers_changed: %TRUE to connect to the widgets "numbers-changed"
* signal, %FALSE to not connect.
* @connect_ratio_changed: %TRUE to connect to the widgets "ratio-changed"
* signal, %FALSE to not connect.
* @separators:
* @allow_simplification:
* @min_valid_value:
* @max_valid_value: What to pass to gimp_number_pair_entry_new ().
*
* Return value: A #GimpNumberPairEntry widget.
*/
GtkWidget * gimp_prop_number_pair_entry_new (GObject *config,
const gchar *left_number_property,
const gchar *right_number_property,
const gchar *default_left_number_property,
const gchar *default_right_number_property,
const gchar *user_override_property,
gboolean connect_numbers_changed,
gboolean connect_ratio_changed,
const gchar *separators,
gboolean allow_simplification,
gdouble min_valid_value,
gdouble max_valid_value)
{
GimpPropNumberPairEntryData *data;
GtkWidget *number_pair_entry;
gdouble left_number;
gdouble right_number;
gdouble default_left_number;
gdouble default_right_number;
gboolean user_override;
/* Setup config data */
data = g_slice_new (GimpPropNumberPairEntryData);
data->config = config;
data->left_number_property = left_number_property;
data->right_number_property = right_number_property;
data->default_left_number_property = default_left_number_property;
data->default_right_number_property = default_right_number_property;
data->user_override_property = user_override_property;
/* Read current values of config properties */
g_object_get (config,
left_number_property, &left_number,
right_number_property, &right_number,
default_left_number_property, &default_left_number,
default_right_number_property, &default_right_number,
user_override_property, &user_override,
NULL);
/* Create a GimpNumberPairEntry and setup with config property values */
number_pair_entry = gimp_number_pair_entry_new (separators,
allow_simplification,
min_valid_value,
max_valid_value);
g_object_set_data_full (G_OBJECT (number_pair_entry),
"gimp-prop-number-pair-entry-data", data,
(GDestroyNotify) gimp_prop_number_pair_entry_data_free);
gtk_entry_set_width_chars (GTK_ENTRY (number_pair_entry), 7);
gimp_number_pair_entry_set_user_override (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
user_override);
gimp_number_pair_entry_set_values (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
left_number,
right_number);
gimp_number_pair_entry_set_default_values (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
default_left_number,
default_right_number);
/* Connect to GimpNumberPairEntry signals */
if (connect_ratio_changed)
g_signal_connect (number_pair_entry, "ratio-changed",
G_CALLBACK (gimp_prop_number_pair_entry_number_pair_numbers_changed),
data);
if (connect_numbers_changed)
g_signal_connect (number_pair_entry, "numbers-changed",
G_CALLBACK (gimp_prop_number_pair_entry_number_pair_numbers_changed),
data);
g_signal_connect (number_pair_entry, "notify::user-override",
G_CALLBACK (gimp_prop_number_pair_entry_number_pair_user_override_notify),
data);
/* Connect to connfig object signals */
connect_notify (config, left_number_property,
G_CALLBACK (gimp_prop_number_pair_entry_config_notify),
number_pair_entry);
connect_notify (config, right_number_property,
G_CALLBACK (gimp_prop_number_pair_entry_config_notify),
number_pair_entry);
connect_notify (config, default_left_number_property,
G_CALLBACK (gimp_prop_number_pair_entry_config_notify),
number_pair_entry);
connect_notify (config, default_right_number_property,
G_CALLBACK (gimp_prop_number_pair_entry_config_notify),
number_pair_entry);
connect_notify (config, user_override_property,
G_CALLBACK (gimp_prop_number_pair_entry_config_notify),
number_pair_entry);
/* Done */
return number_pair_entry;
}
static void
gimp_prop_number_pair_entry_config_notify (GObject *config,
GParamSpec *param_spec,
GtkEntry *number_pair_entry)
{
GimpPropNumberPairEntryData *data =
g_object_get_data (G_OBJECT (number_pair_entry),
"gimp-prop-number-pair-entry-data");
g_return_if_fail (data != NULL);
if (strcmp (param_spec->name, data->left_number_property) == 0 ||
strcmp (param_spec->name, data->right_number_property) == 0)
{
gdouble left_number;
gdouble right_number;
g_object_get (config,
data->left_number_property, &left_number,
data->right_number_property, &right_number,
NULL);
gimp_number_pair_entry_set_values (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
left_number,
right_number);
}
else if (strcmp (param_spec->name, data->default_left_number_property) == 0 ||
strcmp (param_spec->name, data->default_right_number_property) == 0)
{
gdouble default_left_number;
gdouble default_right_number;
g_object_get (config,
data->default_left_number_property, &default_left_number,
data->default_right_number_property, &default_right_number,
NULL);
gimp_number_pair_entry_set_default_values (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
default_left_number,
default_right_number);
}
else if (strcmp (param_spec->name, data->user_override_property) == 0)
{
gboolean user_override;
g_object_get (config,
data->user_override_property, &user_override,
NULL);
gimp_number_pair_entry_set_user_override (GIMP_NUMBER_PAIR_ENTRY (number_pair_entry),
user_override);
}
}
static void
gimp_prop_number_pair_entry_number_pair_numbers_changed (GtkWidget *widget,
GimpPropNumberPairEntryData *data)
{
gdouble left_number;
gdouble right_number;
gimp_number_pair_entry_get_values (GIMP_NUMBER_PAIR_ENTRY (widget),
&left_number,
&right_number);
g_object_set (data->config,
data->left_number_property, left_number,
data->right_number_property, right_number,
NULL);
}
static void
gimp_prop_number_pair_entry_number_pair_user_override_notify (GtkWidget *entry,
GParamSpec *param_spec,
GimpPropNumberPairEntryData *data)
{
gboolean old_config_user_override;
gboolean new_config_user_override;
g_object_get (data->config,
data->user_override_property, &old_config_user_override,
NULL);
new_config_user_override =
gimp_number_pair_entry_get_user_override (GIMP_NUMBER_PAIR_ENTRY (entry));
/* Only set when property changed, to avoid deadlocks */
if (new_config_user_override != old_config_user_override)
g_object_set (data->config,
data->user_override_property, new_config_user_override,
NULL);
}
/***********/
/* table */
/***********/
GtkWidget *
gimp_prop_table_new (GObject *config,
GType owner_type,
GimpContext *context)
{
GtkWidget *table;
GtkSizeGroup *size_group;
GParamSpec **param_specs;
guint n_param_specs;
gint i;
gint row = 0;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (context == NULL || GIMP_IS_CONTEXT (context), NULL);
param_specs = g_object_class_list_properties (G_OBJECT_GET_CLASS (config),
&n_param_specs);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
table = gtk_table_new (3, 1, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
for (i = 0; i < n_param_specs; i++)
{
GParamSpec *pspec = param_specs[i];
GtkWidget *widget = NULL;
const gchar *label = NULL;
/* ignore properties of parent classes of owner_type */
if (! g_type_is_a (pspec->owner_type, owner_type))
continue;
if (G_IS_PARAM_SPEC_STRING (pspec))
{
static GQuark multiline_quark = 0;
if (! multiline_quark)
multiline_quark = g_quark_from_static_string ("multiline");
if (GIMP_IS_PARAM_SPEC_CONFIG_PATH (pspec))
{
widget = gimp_prop_file_chooser_button_new (config,
pspec->name,
g_param_spec_get_nick (pspec),
GTK_FILE_CHOOSER_ACTION_OPEN);
}
else if (g_param_spec_get_qdata (pspec, multiline_quark))
{
GtkTextBuffer *buffer;
GtkWidget *view;
buffer = gimp_prop_text_buffer_new (config, pspec->name, -1);
view = gtk_text_view_new_with_buffer (buffer);
widget = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (widget),
GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (widget), view);
gtk_widget_show (view);
}
else
{
widget = gimp_prop_entry_new (config, pspec->name, -1);
}
label = g_param_spec_get_nick (pspec);
}
else if (G_IS_PARAM_SPEC_BOOLEAN (pspec))
{
widget = gimp_prop_check_button_new (config, pspec->name,
g_param_spec_get_nick (pspec));
}
else if (G_IS_PARAM_SPEC_ENUM (pspec))
{
widget = gimp_prop_enum_combo_box_new (config, pspec->name, 0, 0);
label = g_param_spec_get_nick (pspec);
}
else if (G_IS_PARAM_SPEC_INT (pspec) ||
G_IS_PARAM_SPEC_UINT (pspec) ||
G_IS_PARAM_SPEC_FLOAT (pspec) ||
G_IS_PARAM_SPEC_DOUBLE (pspec))
{
GtkObject *adj;
gint digits = (G_IS_PARAM_SPEC_FLOAT (pspec) ||
G_IS_PARAM_SPEC_DOUBLE (pspec)) ? 2 : 0;
adj = gimp_prop_scale_entry_new (config, pspec->name,
GTK_TABLE (table), 0, row++,
g_param_spec_get_nick (pspec),
1.0, 1.0, digits,
FALSE, 0.0, 0.0);
gtk_size_group_add_widget (size_group,
GIMP_SCALE_ENTRY_SPINBUTTON (adj));
}
else if (GIMP_IS_PARAM_SPEC_RGB (pspec))
{
widget = gimp_prop_color_button_new (config, pspec->name,
g_param_spec_get_nick (pspec),
128, 24,
GIMP_COLOR_AREA_SMALL_CHECKS);
gimp_color_panel_set_context (GIMP_COLOR_PANEL (widget), context);
label = g_param_spec_get_nick (pspec);
}
else
{
g_warning ("%s: not supported: %s (%s)\n", G_STRFUNC,
g_type_name (G_TYPE_FROM_INSTANCE (pspec)), pspec->name);
}
if (widget)
gimp_table_attach_aligned (GTK_TABLE (table), 0, row++,
label, 0.0, 0.5,
widget, 2, FALSE);
}
g_object_unref (size_group);
g_free (param_specs);
return table;
}
/*******************************/
/* private utility functions */
/*******************************/
static GQuark gimp_prop_widgets_param_spec_quark (void) G_GNUC_CONST;
#define PARAM_SPEC_QUARK (gimp_prop_widgets_param_spec_quark ())
static GQuark
gimp_prop_widgets_param_spec_quark (void)
{
static GQuark param_spec_quark = 0;
if (! param_spec_quark)
param_spec_quark = g_quark_from_static_string ("gimp-config-param-spec");
return param_spec_quark;
}
static void
set_param_spec (GObject *object,
GtkWidget *widget,
GParamSpec *param_spec)
{
if (object)
{
g_object_set_qdata (object, PARAM_SPEC_QUARK, param_spec);
}
if (widget)
{
const gchar *blurb = g_param_spec_get_blurb (param_spec);
if (blurb)
gimp_help_set_help_data (widget, gettext (blurb), NULL);
}
}
static GParamSpec *
get_param_spec (GObject *object)
{
return g_object_get_qdata (object, PARAM_SPEC_QUARK);
}
static GParamSpec *
find_param_spec (GObject *object,
const gchar *property_name,
const gchar *strloc)
{
GParamSpec *param_spec;
param_spec = g_object_class_find_property (G_OBJECT_GET_CLASS (object),
property_name);
if (! param_spec)
g_warning ("%s: %s has no property named '%s'",
strloc,
g_type_name (G_TYPE_FROM_INSTANCE (object)),
property_name);
return param_spec;
}
static GParamSpec *
check_param_spec (GObject *object,
const gchar *property_name,
GType type,
const gchar *strloc)
{
GParamSpec *param_spec;
param_spec = find_param_spec (object, property_name, strloc);
if (param_spec && ! g_type_is_a (G_TYPE_FROM_INSTANCE (param_spec), type))
{
g_warning ("%s: property '%s' of %s is not a %s",
strloc,
param_spec->name,
g_type_name (param_spec->owner_type),
g_type_name (type));
return NULL;
}
return param_spec;
}
static GParamSpec *
check_param_spec_w (GObject *object,
const gchar *property_name,
GType type,
const gchar *strloc)
{
GParamSpec *param_spec;
param_spec = check_param_spec (object, property_name, type, strloc);
if (param_spec &&
(param_spec->flags & G_PARAM_WRITABLE) == 0)
{
g_warning ("%s: property '%s' of %s is writable",
strloc,
param_spec->name,
g_type_name (param_spec->owner_type));
return NULL;
}
return param_spec;
}
static void
connect_notify (GObject *config,
const gchar *property_name,
GCallback callback,
gpointer callback_data)
{
gchar *notify_name;
notify_name = g_strconcat ("notify::", property_name, NULL);
g_signal_connect_object (config, notify_name, callback, callback_data, 0);
g_free (notify_name);
}
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