/*  Gtk+ User Interface Builder
 *  Copyright (C) 1998  Damon Chaplin
 *
 *  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 <gtk/gtkpreview.h>
#include "../gb.h"

/* Include the 21x21 icon pixmap for this widget, to be used in the palette */
#include "../graphics/preview.xpm"

/*
 * This is the GbWidget struct for this widget (see ../gbwidget.h).
 * It is initialized in the init() function at the end of this file
 */
static GbWidget gbwidget;

static gchar *Type = "GtkPreview::type";
static gchar *Expand = "GtkPreview::expand";

/******
 * NOTE: To use these functions you need to uncomment them AND add a pointer
 * to the function in the GbWidget struct at the end of this file.
 ******/

/*
 * Creates a new GtkWidget of class GtkPreview, performing any specialized
 * initialization needed for the widget to work correctly in this environment.
 * If a dialog box is used to initialize the widget, return NULL from this
 * function, and call data->callback with your new widget when it is done.
 * If the widget needs a special destroy handler, add a signal here.
 */
GtkWidget *
gb_preview_new (GbWidgetNewData * data)
{
  GtkWidget *preview;
  preview = gtk_preview_new (GTK_PREVIEW_COLOR);
  return preview;
}



/*
 * Creates the components needed to edit the extra properties of this widget.
 */
static void
gb_preview_create_properties (GtkWidget * widget, GbWidgetCreateArgData * data)
{
  property_add_bool (Type, _("Color:"),
		     _("If the preview is color or grayscale"));
  property_add_bool (Expand, _("Expand:"),
		     _("If the preview expands to fill its allocated area"));
}



/*
 * Gets the properties of the widget. This is used for both displaying the
 * properties in the property editor, and also for saving the properties.
 */
static void
gb_preview_get_properties (GtkWidget * widget, GbWidgetGetArgData * data)
{
  gb_widget_output_bool (data, Type, GTK_PREVIEW (widget)->type == GTK_PREVIEW_COLOR);
  gb_widget_output_bool (data, Expand, GTK_PREVIEW (widget)->expand);
}



/*
 * Sets the properties of the widget. This is used for both applying the
 * properties changed in the property editor, and also for loading.
 */
static void
gb_preview_set_properties (GtkWidget * widget, GbWidgetSetArgData * data)
{
  gboolean type, expand;

  type = gb_widget_input_bool (data, Type);
  /* We shouldn't really set the preview type after initialisation, but it
     should be OK as we never use the preview */
  if (data->apply)
    GTK_PREVIEW (widget)->type = type ? GTK_PREVIEW_COLOR
      : GTK_PREVIEW_GRAYSCALE;
  expand = gb_widget_input_bool (data, Expand);
  if (data->apply)
    gtk_preview_set_expand (GTK_PREVIEW (widget), expand);
}



/*
 * Adds menu items to a context menu which is just about to appear!
 * Add commands to aid in editing a GtkPreview, with signals pointing to
 * other functions in this file.
 */
/*
   static void
   gb_preview_create_popup_menu(GtkWidget *widget, GbWidgetCreateMenuData *data)
   {

   }
 */



/*
 * Writes the source code needed to create this widget.
 * You have to output everything necessary to create the widget here, though
 * there are some convenience functions to help.
 */
static void
gb_preview_write_source (GtkWidget * widget, GbWidgetWriteSourceData * data)
{
  if (data->create_widget)
    {
      source_add (data, "  %s = gtk_preview_new (%s);\n", data->wname,
		  GTK_PREVIEW (widget)->type == GTK_PREVIEW_COLOR
		  ? "GTK_PREVIEW_COLOR" : "GTK_PREVIEW_GRAYSCALE");
    }

  gb_widget_write_standard_source (widget, data);

  if (GTK_PREVIEW (widget)->expand)
    source_add (data, "  gtk_preview_set_expand (GTK_PREVIEW (%s), TRUE);\n",
		data->wname);
}



/*
 * Initializes the GbWidget structure.
 * I've placed this at the end of the file so we don't have to include
 * declarations of all the functions.
 */
GbWidget *
gb_preview_init ()
{
  /* Initialise the GTK type */
  volatile GtkType type;
  type = gtk_preview_get_type ();

  /* Initialize the GbWidget structure */
  gb_widget_init_struct (&gbwidget);

  /* Fill in the pixmap struct & tooltip */
  gbwidget.pixmap_struct = preview_xpm;
  gbwidget.tooltip = _("Preview");

  /* Fill in any functions that this GbWidget has */
  gbwidget.gb_widget_new = gb_preview_new;
  gbwidget.gb_widget_create_properties = gb_preview_create_properties;
  gbwidget.gb_widget_get_properties = gb_preview_get_properties;
  gbwidget.gb_widget_set_properties = gb_preview_set_properties;
  gbwidget.gb_widget_write_source = gb_preview_write_source;
/*
   gbwidget.gb_widget_create_popup_menu = gb_preview_create_popup_menu;
 */

  return &gbwidget;
}