/* 
 * Ardesia -- a program for painting on the screen
 * with this program you can play, draw, learn and teach
 * This program has been written such as a freedom sonet
 * We believe in the freedom and in the freedom of education
 *
 * Copyright (C) 2009 Pilolli Pietro <pilolli.pietro@gmail.com>
 *
 * Ardesia 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 3 of the License, or
 * (at your option) any later version.
 * 
 * Ardesia 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, see <http://www.gnu.org/licenses/>.
 *
 */


#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <color_selector.h>
#include <utils.h>
#include <keyboard.h>


/* old picked color in RGBA format */
static gchar *picked_color = NULL;


/*
 * Start the color selector dialog
 * it return the selected color.
 */
gchar *
start_color_selector_dialog (GtkToolButton *toolbutton,
			     GtkWindow *parent,
			     gchar *color)
{
  GtkToggleToolButton *button = GTK_TOGGLE_TOOL_BUTTON (toolbutton);
  gchar *ret_color = NULL;

  start_virtual_keyboard ();

  if (gtk_toggle_tool_button_get_active (button))
    {
      /* Open colour widget. */
      GtkWidget *color_widget = gtk_color_selection_dialog_new (gettext ("Changing colour"));
      GtkColorSelectionDialog *color_dialog = GTK_COLOR_SELECTION_DIALOG (color_widget);
      GtkColorSelection *colorsel = GTK_COLOR_SELECTION (color_dialog->colorsel);
      gint result = -1;
      /* Colour initially selected. */
      GdkColor *gdkcolor;
      
      gtk_window_set_transient_for (GTK_WINDOW (color_widget), parent);
      gtk_window_set_modal (GTK_WINDOW (color_widget), TRUE);
      gtk_window_set_keep_above (GTK_WINDOW (color_widget), TRUE);

      if (picked_color != NULL)
        {
	  gdkcolor = rgba_to_gdkcolor (picked_color);
        }
      else
        {
	  gdkcolor = rgba_to_gdkcolor (color);
        }

      gtk_color_selection_set_current_color (colorsel, gdkcolor);
      gtk_color_selection_set_previous_color (colorsel, gdkcolor);
      gtk_color_selection_set_has_palette (colorsel, TRUE);

      result = gtk_dialog_run (GTK_DIALOG (color_dialog));

      /* Wait for user to select OK or Cancel. */
      switch (result)
	{
	case GTK_RESPONSE_OK:
	  colorsel = GTK_COLOR_SELECTION (color_dialog->colorsel);
	  gtk_color_selection_set_has_palette (colorsel, TRUE);
	  gtk_color_selection_get_current_color (colorsel, gdkcolor);
	  ret_color = gdkcolor_to_rgb (gdkcolor);
	  g_free (picked_color);
	  picked_color = g_strdup_printf ("%s%s", ret_color, "FF");
	  break;

	default:
	  break;
	}

      if (color_widget)
	{
	  gtk_widget_destroy (color_widget);
	}

      g_free (gdkcolor);
    }
  stop_virtual_keyboard ();
  return ret_color;
}