/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#include "config.h"

#include "gtklabel.h"

#include "gtkmain.h"

#include "gtkmarshalers.h"

#include "gtktogglebutton.h"

#include "gtktoggleaction.h"

#include "gtkactivatable.h"

#include "gtkprivate.h"

#include "gtkintl.h"

#include "gtkalias.h"

#define DEFAULT_LEFT_POS  4

#define DEFAULT_TOP_POS   4

#define DEFAULT_SPACING   7

enum {

  TOGGLED,

  LAST_SIGNAL

};

enum {

  PROP_0,

  PROP_ACTIVE,

  PROP_INCONSISTENT,

  PROP_DRAW_INDICATOR

};

static gint gtk_toggle_button_expose        (GtkWidget            *widget,

					     GdkEventExpose       *event);

static gboolean gtk_toggle_button_mnemonic_activate  (GtkWidget            *widget,

                                                      gboolean              group_cycling);

static void gtk_toggle_button_pressed       (GtkButton            *button);

static void gtk_toggle_button_released      (GtkButton            *button);

static void gtk_toggle_button_clicked       (GtkButton            *button);

static void gtk_toggle_button_set_property  (GObject              *object,

					     guint                 prop_id,

					     const GValue         *value,

					     GParamSpec           *pspec);

static void gtk_toggle_button_get_property  (GObject              *object,

					     guint                 prop_id,

					     GValue               *value,

					     GParamSpec           *pspec);

static void gtk_toggle_button_update_state  (GtkButton            *button);

static void gtk_toggle_button_activatable_interface_init (GtkActivatableIface  *iface);

static void gtk_toggle_button_update         	     (GtkActivatable       *activatable,

					 	      GtkAction            *action,

						      const gchar          *property_name);

static void gtk_toggle_button_sync_action_properties (GtkActivatable       *activatable,

						      GtkAction            *action);

static GtkActivatableIface *parent_activatable_iface;

static guint                toggle_button_signals[LAST_SIGNAL] = { 0 };

G_DEFINE_TYPE_WITH_CODE (GtkToggleButton, gtk_toggle_button, GTK_TYPE_BUTTON,

			 G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,

						gtk_toggle_button_activatable_interface_init))

static void

gtk_toggle_button_class_init (GtkToggleButtonClass *class)

{

  GObjectClass *gobject_class;

  GtkWidgetClass *widget_class;

  GtkButtonClass *button_class;

  gobject_class = G_OBJECT_CLASS (class);

  widget_class = (GtkWidgetClass*) class;

  button_class = (GtkButtonClass*) class;

  gobject_class->set_property = gtk_toggle_button_set_property;

  gobject_class->get_property = gtk_toggle_button_get_property;

  widget_class->expose_event = gtk_toggle_button_expose;

  widget_class->mnemonic_activate = gtk_toggle_button_mnemonic_activate;

  button_class->pressed = gtk_toggle_button_pressed;

  button_class->released = gtk_toggle_button_released;

  button_class->clicked = gtk_toggle_button_clicked;

  button_class->enter = gtk_toggle_button_update_state;

  button_class->leave = gtk_toggle_button_update_state;

  class->toggled = NULL;

  g_object_class_install_property (gobject_class,

                                   PROP_ACTIVE,

                                   g_param_spec_boolean ("active",

							 P_("Active"),

							 P_("If the toggle button should be pressed in or not"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (gobject_class,

                                   PROP_INCONSISTENT,

                                   g_param_spec_boolean ("inconsistent",

							 P_("Inconsistent"),

							 P_("If the toggle button is in an \"in between\" state"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  g_object_class_install_property (gobject_class,

                                   PROP_DRAW_INDICATOR,

                                   g_param_spec_boolean ("draw-indicator",

							 P_("Draw Indicator"),

							 P_("If the toggle part of the button is displayed"),

							 FALSE,

							 GTK_PARAM_READWRITE));

  toggle_button_signals[TOGGLED] =

    g_signal_new (I_("toggled"),

		  G_OBJECT_CLASS_TYPE (gobject_class),

		  G_SIGNAL_RUN_FIRST,

		  G_STRUCT_OFFSET (GtkToggleButtonClass, toggled),

		  NULL, NULL,

		  _gtk_marshal_VOID__VOID,

		  G_TYPE_NONE, 0);

}

static void

gtk_toggle_button_init (GtkToggleButton *toggle_button)

{

  toggle_button->active = FALSE;

  toggle_button->draw_indicator = FALSE;

  GTK_BUTTON (toggle_button)->depress_on_activate = TRUE;

}

static void

gtk_toggle_button_activatable_interface_init (GtkActivatableIface *iface)

{

  parent_activatable_iface = g_type_interface_peek_parent (iface);

  iface->update = gtk_toggle_button_update;

  iface->sync_action_properties = gtk_toggle_button_sync_action_properties;

}

static void

gtk_toggle_button_update (GtkActivatable *activatable,

			  GtkAction      *action,

			  const gchar    *property_name)

{

  GtkToggleButton *button;

  parent_activatable_iface->update (activatable, action, property_name);

  button = GTK_TOGGLE_BUTTON (activatable);

  if (strcmp (property_name, "active") == 0)

    {

      gtk_action_block_activate (action);

      gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));

      gtk_action_unblock_activate (action);

    }

}

static void

gtk_toggle_button_sync_action_properties (GtkActivatable *activatable,

				          GtkAction      *action)

{

  GtkToggleButton *button;

  parent_activatable_iface->sync_action_properties (activatable, action);

  if (!GTK_IS_TOGGLE_ACTION (action))

    return;

  button = GTK_TOGGLE_BUTTON (activatable);

  gtk_action_block_activate (action);

  gtk_toggle_button_set_active (button, gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)));

  gtk_action_unblock_activate (action);

}

GtkWidget*

gtk_toggle_button_new (void)

{

  return g_object_new (GTK_TYPE_TOGGLE_BUTTON, NULL);

}

GtkWidget*

gtk_toggle_button_new_with_label (const gchar *label)

{

  return g_object_new (GTK_TYPE_TOGGLE_BUTTON, "label", label, NULL);

}

/**

 * gtk_toggle_button_new_with_mnemonic:

 * @label: the text of the button, with an underscore in front of the

 *         mnemonic character

 * @returns: a new #GtkToggleButton

 *

 * Creates a new #GtkToggleButton containing a label. The label

 * will be created using gtk_label_new_with_mnemonic(), so underscores

 * in @label indicate the mnemonic for the button.

 **/

GtkWidget*

gtk_toggle_button_new_with_mnemonic (const gchar *label)

{

  return g_object_new (GTK_TYPE_TOGGLE_BUTTON, 

		       "label", label, 

		       "use-underline", TRUE, 

		       NULL);

}

static void

gtk_toggle_button_set_property (GObject      *object,

				guint         prop_id,

				const GValue *value,

				GParamSpec   *pspec)

{

  GtkToggleButton *tb;

  tb = GTK_TOGGLE_BUTTON (object);

  switch (prop_id)

    {

    case PROP_ACTIVE:

      gtk_toggle_button_set_active (tb, g_value_get_boolean (value));

      break;

    case PROP_INCONSISTENT:

      gtk_toggle_button_set_inconsistent (tb, g_value_get_boolean (value));

      break;

    case PROP_DRAW_INDICATOR:

      gtk_toggle_button_set_mode (tb, g_value_get_boolean (value));

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

static void

gtk_toggle_button_get_property (GObject      *object,

				guint         prop_id,

				GValue       *value,

				GParamSpec   *pspec)

{

  GtkToggleButton *tb;

  tb = GTK_TOGGLE_BUTTON (object);

  switch (prop_id)

    {

    case PROP_ACTIVE:

      g_value_set_boolean (value, tb->active);

      break;

    case PROP_INCONSISTENT:

      g_value_set_boolean (value, tb->inconsistent);

      break;

    case PROP_DRAW_INDICATOR:

      g_value_set_boolean (value, tb->draw_indicator);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

/**

 * gtk_toggle_button_set_mode:

 * @toggle_button: a #GtkToggleButton

 * @draw_indicator: if %TRUE, draw the button as a separate indicator

 * and label; if %FALSE, draw the button like a normal button

 *

 * Sets whether the button is displayed as a separate indicator and label.

 * You can call this function on a checkbutton or a radiobutton with

 * @draw_indicator = %FALSE to make the button look like a normal button

 *

 * This function only affects instances of classes like #GtkCheckButton

 * and #GtkRadioButton that derive from #GtkToggleButton,

 * not instances of #GtkToggleButton itself.

 */

void

gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,

			    gboolean         draw_indicator)

{

  g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));

  draw_indicator = draw_indicator ? TRUE : FALSE;

  if (toggle_button->draw_indicator != draw_indicator)

    {

      toggle_button->draw_indicator = draw_indicator;

      GTK_BUTTON (toggle_button)->depress_on_activate = !draw_indicator;

      if (gtk_widget_get_visible (GTK_WIDGET (toggle_button)))

	gtk_widget_queue_resize (GTK_WIDGET (toggle_button));

      g_object_notify (G_OBJECT (toggle_button), "draw-indicator");

    }

}

/**

 * gtk_toggle_button_get_mode:

 * @toggle_button: a #GtkToggleButton

 *

 * Retrieves whether the button is displayed as a separate indicator

 * and label. See gtk_toggle_button_set_mode().

 *

 * Return value: %TRUE if the togglebutton is drawn as a separate indicator

 *   and label.

 **/

gboolean

gtk_toggle_button_get_mode (GtkToggleButton *toggle_button)

{

  g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);

  return toggle_button->draw_indicator;

}

void

gtk_toggle_button_set_active (GtkToggleButton *toggle_button,

			      gboolean         is_active)

{

  g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));

  is_active = is_active != FALSE;

  if (toggle_button->active != is_active)

    gtk_button_clicked (GTK_BUTTON (toggle_button));

}

gboolean

gtk_toggle_button_get_active (GtkToggleButton *toggle_button)

{

  g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);

  return (toggle_button->active) ? TRUE : FALSE;

}

void

gtk_toggle_button_toggled (GtkToggleButton *toggle_button)

{

  g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));

  g_signal_emit (toggle_button, toggle_button_signals[TOGGLED], 0);

}

/**

 * gtk_toggle_button_set_inconsistent:

 * @toggle_button: a #GtkToggleButton

 * @setting: %TRUE if state is inconsistent

 *

 * If the user has selected a range of elements (such as some text or

 * spreadsheet cells) that are affected by a toggle button, and the

 * current values in that range are inconsistent, you may want to

 * display the toggle in an "in between" state. This function turns on

 * "in between" display.  Normally you would turn off the inconsistent

 * state again if the user toggles the toggle button. This has to be

 * done manually, gtk_toggle_button_set_inconsistent() only affects

 * visual appearance, it doesn't affect the semantics of the button.

 * 

 **/

void

gtk_toggle_button_set_inconsistent (GtkToggleButton *toggle_button,

                                    gboolean         setting)

{

  g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));

  setting = setting != FALSE;

  if (setting != toggle_button->inconsistent)

    {

      toggle_button->inconsistent = setting;

      gtk_toggle_button_update_state (GTK_BUTTON (toggle_button));

      gtk_widget_queue_draw (GTK_WIDGET (toggle_button));

      g_object_notify (G_OBJECT (toggle_button), "inconsistent");      

    }

}

/**

 * gtk_toggle_button_get_inconsistent:

 * @toggle_button: a #GtkToggleButton

 * 

 * Gets the value set by gtk_toggle_button_set_inconsistent().

 * 

 * Return value: %TRUE if the button is displayed as inconsistent, %FALSE otherwise

 **/

gboolean

gtk_toggle_button_get_inconsistent (GtkToggleButton *toggle_button)

{

  g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);

  return toggle_button->inconsistent;

}

static gint

gtk_toggle_button_expose (GtkWidget      *widget,

			  GdkEventExpose *event)

{

  if (gtk_widget_is_drawable (widget))

    {

      GtkWidget *child = GTK_BIN (widget)->child;

      GtkButton *button = GTK_BUTTON (widget);

      GtkStateType state_type;

      GtkShadowType shadow_type;

      state_type = gtk_widget_get_state (widget);

      if (GTK_TOGGLE_BUTTON (widget)->inconsistent)

        {

          if (state_type == GTK_STATE_ACTIVE)

            state_type = GTK_STATE_NORMAL;

          shadow_type = GTK_SHADOW_ETCHED_IN;

        }

      else

	shadow_type = button->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;

      _gtk_button_paint (button, &event->area, state_type, shadow_type,

			 "togglebutton", "togglebuttondefault");

      if (child)

	gtk_container_propagate_expose (GTK_CONTAINER (widget), child, event);

    }

  return FALSE;

}

static gboolean

gtk_toggle_button_mnemonic_activate (GtkWidget *widget,

                                     gboolean   group_cycling)

{

  /*

   * We override the standard implementation in 

   * gtk_widget_real_mnemonic_activate() in order to focus the widget even

   * if there is no mnemonic conflict.

   */

  if (gtk_widget_get_can_focus (widget))

    gtk_widget_grab_focus (widget);

  if (!group_cycling)

    gtk_widget_activate (widget);

  return TRUE;

}

static void

gtk_toggle_button_pressed (GtkButton *button)

{

  button->button_down = TRUE;

  gtk_toggle_button_update_state (button);

  gtk_widget_queue_draw (GTK_WIDGET (button));

}

static void

gtk_toggle_button_released (GtkButton *button)

{

  if (button->button_down)

    {

      button->button_down = FALSE;

      if (button->in_button)

	gtk_button_clicked (button);

      gtk_toggle_button_update_state (button);

      gtk_widget_queue_draw (GTK_WIDGET (button));

    }

}

static void

gtk_toggle_button_clicked (GtkButton *button)

{

  GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);

  toggle_button->active = !toggle_button->active;

  gtk_toggle_button_toggled (toggle_button);

  gtk_toggle_button_update_state (button);

  g_object_notify (G_OBJECT (toggle_button), "active");

  if (GTK_BUTTON_CLASS (gtk_toggle_button_parent_class)->clicked)

    GTK_BUTTON_CLASS (gtk_toggle_button_parent_class)->clicked (button);

}

static void

gtk_toggle_button_update_state (GtkButton *button)

{

  GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);

  gboolean depressed, touchscreen;

  GtkStateType new_state;

  g_object_get (gtk_widget_get_settings (GTK_WIDGET (button)),

                "gtk-touchscreen-mode", &touchscreen,

                NULL);

  if (toggle_button->inconsistent)

    depressed = FALSE;

  else if (button->in_button && button->button_down)

    depressed = TRUE;

  else

    depressed = toggle_button->active;

  if (!touchscreen && button->in_button && (!button->button_down || toggle_button->draw_indicator))

    new_state = GTK_STATE_PRELIGHT;

  else

    new_state = depressed ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL;

  _gtk_button_set_depressed (button, depressed); 

  gtk_widget_set_state (GTK_WIDGET (toggle_button), new_state);

}

#define __GTK_TOGGLE_BUTTON_C__

#include "gtkaliasdef.c"