mirror of https://github.com/GNOME/gimp.git
497 lines
14 KiB
C
497 lines
14 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
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*
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* gimppropwidgets.c
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* Copyright (C) 2002-2004 Michael Natterer <mitch@gimp.org>
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* Sven Neumann <sven@gimp.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include "libgimpcolor/gimpcolor.h"
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#include "libgimpmath/gimpmath.h"
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#include "libgimpbase/gimpbase.h"
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#include "libgimpconfig/gimpconfig.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "widgets-types.h"
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#include "core/gimpviewable.h"
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#include "gimpcolorpanel.h"
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#include "gimpdnd.h"
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#include "gimpview.h"
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#include "gimppropwidgets.h"
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#include "gimpwidgets-constructors.h"
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#include "gimp-intl.h"
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/* utility function prototypes */
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static void set_param_spec (GObject *object,
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GtkWidget *widget,
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GParamSpec *param_spec);
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static GParamSpec * get_param_spec (GObject *object);
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static GParamSpec * find_param_spec (GObject *object,
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const gchar *property_name,
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const gchar *strloc);
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static GParamSpec * check_param_spec (GObject *object,
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const gchar *property_name,
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GType type,
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const gchar *strloc);
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static void connect_notify (GObject *config,
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const gchar *property_name,
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GCallback callback,
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gpointer callback_data);
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/****************/
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/* paint menu */
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/****************/
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static void gimp_prop_paint_menu_callback (GtkWidget *widget,
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GObject *config);
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static void gimp_prop_paint_menu_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *menu);
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/**
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* gimp_prop_paint_mode_menu_new:
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* @config: #GimpConfig object to which property is attached.
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* @property_name: Name of Enum property controlled by combo box.
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* @with_behind_mode: Whether to include "Behind" mode in the menu.
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*
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* Creates a #GimpPaintModeMenu widget to display and set the specified
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* Enum property, for which the enum must be #GimpLayerModeEffects.
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*
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* Return value: The newly created #GimpPaintModeMenu widget.
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*
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* Since GIMP 2.4
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*/
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GtkWidget *
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gimp_prop_paint_mode_menu_new (GObject *config,
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const gchar *property_name,
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gboolean with_behind_mode)
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{
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GParamSpec *param_spec;
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GtkWidget *menu;
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gint value;
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param_spec = check_param_spec (config, property_name,
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G_TYPE_PARAM_ENUM, G_STRFUNC);
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if (! param_spec)
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return NULL;
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g_object_get (config,
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property_name, &value,
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NULL);
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menu = gimp_paint_mode_menu_new (with_behind_mode);
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gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (menu),
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value,
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G_CALLBACK (gimp_prop_paint_menu_callback),
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config);
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set_param_spec (G_OBJECT (menu), menu, param_spec);
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connect_notify (config, property_name,
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G_CALLBACK (gimp_prop_paint_menu_notify),
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menu);
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return menu;
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}
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static void
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gimp_prop_paint_menu_callback (GtkWidget *widget,
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GObject *config)
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{
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GParamSpec *param_spec;
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gint value;
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param_spec = get_param_spec (G_OBJECT (widget));
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if (! param_spec)
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return;
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if (gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value))
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{
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g_object_set (config,
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param_spec->name, value,
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NULL);
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}
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}
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static void
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gimp_prop_paint_menu_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *menu)
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{
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gint value;
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g_object_get (config,
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param_spec->name, &value,
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NULL);
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g_signal_handlers_block_by_func (menu,
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gimp_prop_paint_menu_callback,
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config);
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gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (menu), value);
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g_signal_handlers_unblock_by_func (menu,
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gimp_prop_paint_menu_callback,
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config);
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}
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/******************/
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/* color button */
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/******************/
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static void gimp_prop_color_button_callback (GtkWidget *widget,
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GObject *config);
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static void gimp_prop_color_button_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *button);
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/**
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* gimp_prop_color_button_new:
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* @config: #GimpConfig object to which property is attached.
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* @property_name: Name of RGB property.
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* @title: title of the #GimpColorPanel that is to be created
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* @width: Width of color button.
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* @height: Height of color button.
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* @type: How transparency is represented.
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*
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* Creates a #GimpColorPanel to set and display the value of an RGB
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* property. Pressing the button brings up a color selector dialog.
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*
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* Return value: A new #GimpColorPanel widget.
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*
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* Since GIMP 2.4
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*/
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GtkWidget *
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gimp_prop_color_button_new (GObject *config,
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const gchar *property_name,
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const gchar *title,
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gint width,
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gint height,
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GimpColorAreaType type)
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{
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GParamSpec *param_spec;
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GtkWidget *button;
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GimpRGB *value;
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param_spec = check_param_spec (config, property_name,
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GIMP_TYPE_PARAM_RGB, G_STRFUNC);
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if (! param_spec)
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return NULL;
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g_object_get (config,
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property_name, &value,
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NULL);
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button = gimp_color_panel_new (title, value, type, width, height);
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g_free (value);
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set_param_spec (G_OBJECT (button), button, param_spec);
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g_signal_connect (button, "color-changed",
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G_CALLBACK (gimp_prop_color_button_callback),
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config);
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connect_notify (config, property_name,
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G_CALLBACK (gimp_prop_color_button_notify),
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button);
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return button;
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}
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static void
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gimp_prop_color_button_callback (GtkWidget *button,
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GObject *config)
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{
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GParamSpec *param_spec;
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GimpRGB value;
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param_spec = get_param_spec (G_OBJECT (button));
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if (! param_spec)
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return;
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gimp_color_button_get_color (GIMP_COLOR_BUTTON (button), &value);
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g_signal_handlers_block_by_func (config,
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gimp_prop_color_button_notify,
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button);
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g_object_set (config,
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param_spec->name, &value,
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NULL);
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g_signal_handlers_unblock_by_func (config,
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gimp_prop_color_button_notify,
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button);
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}
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static void
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gimp_prop_color_button_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *button)
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{
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GimpRGB *value;
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g_object_get (config,
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param_spec->name, &value,
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NULL);
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g_signal_handlers_block_by_func (button,
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gimp_prop_color_button_callback,
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config);
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gimp_color_button_set_color (GIMP_COLOR_BUTTON (button), value);
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g_free (value);
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g_signal_handlers_unblock_by_func (button,
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gimp_prop_color_button_callback,
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config);
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}
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/*************/
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/* view */
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/*************/
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static void gimp_prop_view_drop (GtkWidget *menu,
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gint x,
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gint y,
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GimpViewable *viewable,
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gpointer data);
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static void gimp_prop_view_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *view);
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/**
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* gimp_prop_view_new:
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* @config: #GimpConfig object to which property is attached.
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* @property_name: Name of Unit property.
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* @size: Width and height of preview display.
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*
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* Creates a widget to display the value of a Preview property.
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*
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* Return value: A new #GimpView widget.
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*
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* Since GIMP 2.4
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*/
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GtkWidget *
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gimp_prop_view_new (GObject *config,
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const gchar *property_name,
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gint size)
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{
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GParamSpec *param_spec;
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GtkWidget *view;
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GimpViewable *viewable;
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param_spec = check_param_spec (config, property_name,
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G_TYPE_PARAM_OBJECT, G_STRFUNC);
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if (! param_spec)
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return NULL;
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if (! g_type_is_a (param_spec->value_type, GIMP_TYPE_VIEWABLE))
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{
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g_warning ("%s: property '%s' of %s is not a GimpViewable",
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G_STRFUNC, property_name,
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g_type_name (G_TYPE_FROM_INSTANCE (config)));
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return NULL;
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}
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view = gimp_view_new_by_types (GIMP_TYPE_VIEW,
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param_spec->value_type,
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size, 0, FALSE);
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if (! view)
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{
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g_warning ("%s: cannot create view for type '%s'",
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G_STRFUNC, g_type_name (param_spec->value_type));
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return NULL;
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}
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g_object_get (config,
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property_name, &viewable,
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NULL);
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if (viewable)
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{
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gimp_view_set_viewable (GIMP_VIEW (view), viewable);
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g_object_unref (viewable);
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}
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set_param_spec (G_OBJECT (view), view, param_spec);
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gimp_dnd_viewable_dest_add (view, param_spec->value_type,
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gimp_prop_view_drop,
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config);
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connect_notify (config, property_name,
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G_CALLBACK (gimp_prop_view_notify),
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view);
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return view;
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}
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static void
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gimp_prop_view_drop (GtkWidget *view,
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gint x,
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gint y,
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GimpViewable *viewable,
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gpointer data)
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{
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GObject *config;
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GParamSpec *param_spec;
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param_spec = get_param_spec (G_OBJECT (view));
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if (! param_spec)
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return;
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config = G_OBJECT (data);
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g_object_set (config,
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param_spec->name, viewable,
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NULL);
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}
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static void
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gimp_prop_view_notify (GObject *config,
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GParamSpec *param_spec,
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GtkWidget *view)
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{
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GimpViewable *viewable;
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g_object_get (config,
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param_spec->name, &viewable,
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NULL);
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gimp_view_set_viewable (GIMP_VIEW (view), viewable);
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if (viewable)
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g_object_unref (viewable);
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}
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/*******************************/
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/* private utility functions */
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/*******************************/
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static GQuark param_spec_quark = 0;
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static void
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set_param_spec (GObject *object,
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GtkWidget *widget,
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GParamSpec *param_spec)
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{
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if (object)
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{
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if (! param_spec_quark)
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param_spec_quark = g_quark_from_static_string ("gimp-config-param-spec");
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g_object_set_qdata (object, param_spec_quark, param_spec);
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}
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if (widget)
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{
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const gchar *blurb = g_param_spec_get_blurb (param_spec);
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if (blurb)
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gimp_help_set_help_data (widget, gettext (blurb), NULL);
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}
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}
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static GParamSpec *
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get_param_spec (GObject *object)
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{
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if (! param_spec_quark)
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param_spec_quark = g_quark_from_static_string ("gimp-config-param-spec");
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return g_object_get_qdata (object, param_spec_quark);
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}
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static GParamSpec *
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find_param_spec (GObject *object,
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const gchar *property_name,
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const gchar *strloc)
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{
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GParamSpec *param_spec;
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param_spec = g_object_class_find_property (G_OBJECT_GET_CLASS (object),
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property_name);
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if (! param_spec)
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g_warning ("%s: %s has no property named '%s'",
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strloc,
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g_type_name (G_TYPE_FROM_INSTANCE (object)),
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property_name);
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return param_spec;
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}
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static GParamSpec *
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check_param_spec (GObject *object,
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const gchar *property_name,
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GType type,
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const gchar *strloc)
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{
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GParamSpec *param_spec;
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param_spec = find_param_spec (object, property_name, strloc);
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if (param_spec && ! g_type_is_a (G_TYPE_FROM_INSTANCE (param_spec), type))
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{
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g_warning ("%s: property '%s' of %s is not a %s",
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strloc,
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param_spec->name,
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g_type_name (param_spec->owner_type),
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g_type_name (type));
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return NULL;
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}
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return param_spec;
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}
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static void
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connect_notify (GObject *config,
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const gchar *property_name,
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GCallback callback,
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gpointer callback_data)
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{
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gchar *notify_name;
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notify_name = g_strconcat ("notify::", property_name, NULL);
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g_signal_connect_object (config, notify_name, callback, callback_data, 0);
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g_free (notify_name);
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}
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