/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * 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 <gtk/gtk.h>

#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"

#include "tools-types.h"

#include "config/gimpconfig-params.h"
#include "config/gimpcoreconfig.h"

#include "core/gimp.h"
#include "core/gimptoolinfo.h"

#include "widgets/gimppropwidgets.h"
#include "widgets/gimpwidgets-utils.h"

#include "gimprotatetool.h"
#include "gimpscaletool.h"
#include "gimptransformoptions.h"

#include "gimp-intl.h"


enum
{
  PROP_0,
  PROP_DIRECTION,
  PROP_INTERPOLATION,
  PROP_CLIP,
  PROP_GRID_TYPE,
  PROP_GRID_SIZE,
  PROP_SHOW_PATH,
  PROP_CONSTRAIN_1,
  PROP_CONSTRAIN_2
};


static void   gimp_transform_options_init       (GimpTransformOptions      *options);
static void   gimp_transform_options_class_init (GimpTransformOptionsClass *options_class);

static void   gimp_transform_options_set_property (GObject         *object,
                                                   guint            property_id,
                                                   const GValue    *value,
                                                   GParamSpec      *pspec);
static void   gimp_transform_options_get_property (GObject         *object,
                                                   guint            property_id,
                                                   GValue          *value,
                                                   GParamSpec      *pspec);

static void   gimp_transform_options_reset        (GimpToolOptions *tool_options);

static void   gimp_transform_options_grid_notify  (GimpTransformOptions *options,
                                                   GParamSpec           *pspec,
                                                   GtkWidget            *density_box);


static GimpToolOptionsClass *parent_class = NULL;


GType
gimp_transform_options_get_type (void)
{
  static GType type = 0;

  if (! type)
    {
      static const GTypeInfo info =
      {
        sizeof (GimpTransformOptionsClass),
	(GBaseInitFunc) NULL,
	(GBaseFinalizeFunc) NULL,
	(GClassInitFunc) gimp_transform_options_class_init,
	NULL,           /* class_finalize */
	NULL,           /* class_data     */
	sizeof (GimpTransformOptions),
	0,              /* n_preallocs    */
	(GInstanceInitFunc) gimp_transform_options_init,
      };

      type = g_type_register_static (GIMP_TYPE_TOOL_OPTIONS,
                                     "GimpTransformOptions",
                                     &info, 0);
    }

  return type;
}

static void 
gimp_transform_options_class_init (GimpTransformOptionsClass *klass)
{
  GObjectClass         *object_class;
  GimpToolOptionsClass *options_class;

  object_class  = G_OBJECT_CLASS (klass);
  options_class = GIMP_TOOL_OPTIONS_CLASS (klass);

  parent_class = g_type_class_peek_parent (klass);

  object_class->set_property = gimp_transform_options_set_property;
  object_class->get_property = gimp_transform_options_get_property;

  options_class->reset       = gimp_transform_options_reset;

  GIMP_CONFIG_INSTALL_PROP_ENUM (object_class, PROP_DIRECTION,
                                 "direction", NULL,
                                 GIMP_TYPE_TRANSFORM_DIRECTION,
                                 GIMP_TRANSFORM_FORWARD,
                                 0);
  GIMP_CONFIG_INSTALL_PROP_ENUM (object_class, PROP_INTERPOLATION,
                                 "interpolation", NULL,
                                 GIMP_TYPE_INTERPOLATION_TYPE,
                                 GIMP_LINEAR,
                                 0);
  GIMP_CONFIG_INSTALL_PROP_BOOLEAN (object_class, PROP_CLIP,
                                    "clip", NULL,
                                    FALSE,
                                    0);
  GIMP_CONFIG_INSTALL_PROP_ENUM (object_class, PROP_GRID_TYPE,
                                 "grid-type", NULL,
                                 GIMP_TYPE_TRANSFORM_GRID_TYPE,
                                 GIMP_TRANSFORM_GRID_TYPE_N_LINES,
                                 0);
  GIMP_CONFIG_INSTALL_PROP_INT (object_class, PROP_GRID_SIZE,
                                "grid-size", NULL,
                                1, 128, 15,
                                0);
  GIMP_CONFIG_INSTALL_PROP_BOOLEAN (object_class, PROP_SHOW_PATH,
                                    "show-path", NULL,
                                    FALSE,
                                    0);
  GIMP_CONFIG_INSTALL_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_1,
                                    "constrain-1", NULL,
                                    FALSE,
                                    0);
  GIMP_CONFIG_INSTALL_PROP_BOOLEAN (object_class, PROP_CONSTRAIN_2,
                                    "constrain-2", NULL,
                                    FALSE,
                                    0);
}

static void
gimp_transform_options_init (GimpTransformOptions *options)
{
}

static void
gimp_transform_options_set_property (GObject      *object,
                                     guint         property_id,
                                     const GValue *value,
                                     GParamSpec   *pspec)
{
  GimpTransformOptions *options;

  options = GIMP_TRANSFORM_OPTIONS (object);

  switch (property_id)
    {
    case PROP_DIRECTION:
      options->direction = g_value_get_enum (value);
      break;
    case PROP_INTERPOLATION:
      options->interpolation = g_value_get_enum (value);
      break;
    case PROP_CLIP:
      options->clip = g_value_get_boolean (value);
      break;
    case PROP_GRID_TYPE:
      options->grid_type = g_value_get_enum (value);
      break;
    case PROP_GRID_SIZE:
      options->grid_size = g_value_get_int (value);
      break;
    case PROP_SHOW_PATH:
      options->show_path = g_value_get_boolean (value);
      break;
    case PROP_CONSTRAIN_1:
      options->constrain_1 = g_value_get_boolean (value);
      break;
    case PROP_CONSTRAIN_2:
      options->constrain_2 = g_value_get_boolean (value);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
gimp_transform_options_get_property (GObject    *object,
                                     guint       property_id,
                                     GValue     *value,
                                     GParamSpec *pspec)
{
  GimpTransformOptions *options;

  options = GIMP_TRANSFORM_OPTIONS (object);

  switch (property_id)
    {
    case PROP_DIRECTION:
      g_value_set_enum (value, options->direction);
      break;
    case PROP_INTERPOLATION:
      g_value_set_enum (value, options->interpolation);
      break;
    case PROP_CLIP:
      g_value_set_boolean (value, options->clip);
      break;
    case PROP_GRID_TYPE:
      g_value_set_enum (value, options->grid_type);
      break;
    case PROP_GRID_SIZE:
      g_value_set_int (value, options->grid_size);
      break;
    case PROP_SHOW_PATH:
      g_value_set_boolean (value, options->show_path);
      break;
    case PROP_CONSTRAIN_1:
      g_value_set_boolean (value, options->constrain_1);
      break;
    case PROP_CONSTRAIN_2:
      g_value_set_boolean (value, options->constrain_2);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
gimp_transform_options_reset (GimpToolOptions *tool_options)
{
  GimpTransformOptions *options;
  GParamSpec           *pspec;

  options = GIMP_TRANSFORM_OPTIONS (tool_options);

  pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (tool_options),
                                        "interpolation");

  if (pspec)
    {
      G_PARAM_SPEC_ENUM (pspec)->default_value =
        tool_options->tool_info->gimp->config->interpolation_type;
    }

  GIMP_TOOL_OPTIONS_CLASS (parent_class)->reset (tool_options);
}

GtkWidget *
gimp_transform_options_gui (GimpToolOptions *tool_options)
{
  GObject   *config;
  GimpTransformOptions *options;
  GtkWidget            *vbox;
  GtkWidget            *hbox;
  GtkWidget            *label;
  GtkWidget            *frame;
  GtkWidget            *table;
  GtkWidget            *optionmenu;
  GtkWidget            *button;

  config = G_OBJECT (tool_options);
  options = GIMP_TRANSFORM_OPTIONS (tool_options);

  vbox = gimp_tool_options_gui (tool_options);

  frame = gimp_prop_enum_radio_frame_new (config, "direction",
                                          _("Transform Direction"), 0, 0);
  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
  gtk_widget_show (frame);

  /*  the interpolation menu  */
  hbox = gtk_hbox_new (FALSE, 4);
  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
  gtk_widget_show (hbox);

  label = gtk_label_new (_("Interpolation:"));
  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);

  optionmenu = gimp_prop_enum_option_menu_new (config, "interpolation", 0, 0);
  gtk_box_pack_start (GTK_BOX (hbox), optionmenu, FALSE, FALSE, 0);
  gtk_widget_show (optionmenu);

  /*  the clip resulting image toggle button  */
  button = gimp_prop_check_button_new (config, "clip", _("Clip Result"));
  gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);

  /*  the grid frame  */
  frame = gtk_frame_new (NULL);
  gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
  gtk_widget_show (frame);

  /*  the grid type menu  */
  optionmenu = gimp_prop_enum_option_menu_new (config, "grid-type", 0, 0);
  gtk_frame_set_label_widget (GTK_FRAME (frame), optionmenu);
  gtk_widget_show (optionmenu);

  /*  the grid density scale  */
  table = gtk_table_new (1, 3, FALSE);
  gtk_container_set_border_width (GTK_CONTAINER (table), 2);
  gtk_table_set_col_spacings (GTK_TABLE (table), 2);
  gtk_container_add (GTK_CONTAINER (frame), table);
  gtk_widget_show (table);

  g_signal_connect (config, "notify::grid-type",
                    G_CALLBACK (gimp_transform_options_grid_notify),
                    table);

  gimp_prop_scale_entry_new (config, "grid-size",
                             GTK_TABLE (table), 0, 0,
                             _("Density:"),
                             1.0, 8.0, 0,
                             FALSE, 0.0, 0.0);

  /*  the show_path toggle button  */
  button = gimp_prop_check_button_new (config, "show-path", _("Show Path"));
  gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);

  if (tool_options->tool_info->tool_type == GIMP_TYPE_ROTATE_TOOL ||
      tool_options->tool_info->tool_type == GIMP_TYPE_SCALE_TOOL)
    {
      GtkWidget *vbox2;
      gchar     *str;

      /*  the constraints frame  */
      frame = gtk_frame_new (_("Constraints"));
      gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
      gtk_widget_show (frame);

      vbox2 = gtk_vbox_new (FALSE, 2);
      gtk_container_set_border_width (GTK_CONTAINER (vbox2), 2);
      gtk_container_add (GTK_CONTAINER (frame), vbox2);
      gtk_widget_show (vbox2);

      if (tool_options->tool_info->tool_type == GIMP_TYPE_ROTATE_TOOL)
        {
          str = g_strdup_printf (_("15 Degrees  %s"),
                                 gimp_get_mod_name_control ());

          button = gimp_prop_check_button_new (config, "constrain-1", str);
          gtk_box_pack_start (GTK_BOX (vbox2), button, FALSE, FALSE, 0);
          gtk_widget_show (button);

          g_free (str);
        }
      else if (tool_options->tool_info->tool_type == GIMP_TYPE_SCALE_TOOL)
        {
          str = g_strdup_printf (_("Keep Height  %s"),
                                 gimp_get_mod_name_control ());

          button = gimp_prop_check_button_new (config, "constrain-1", str);
          gtk_box_pack_start (GTK_BOX (vbox2), button, FALSE, FALSE, 0);
          gtk_widget_show (button);

          g_free (str);

          gimp_help_set_help_data (button,
                                   _("Activate both the \"Keep Height\" and\n"
                                     "\"Keep Width\" toggles to constrain\n"
                                     "the aspect ratio"), NULL);

          str = g_strdup_printf (_("Keep Width  %s"),
                                 gimp_get_mod_name_alt ());

          button = gimp_prop_check_button_new (config, "constrain-2", str);
          gtk_box_pack_start (GTK_BOX (vbox2), button, FALSE, FALSE, 0);
          gtk_widget_show (button);

          g_free (str);

          gimp_help_set_help_data (button,
                                   _("Activate both the \"Keep Height\" and\n"
                                     "\"Keep Width\" toggles to constrain\n"
                                     "the aspect ratio"), NULL);
        }
    }

  gimp_transform_options_reset (tool_options);

  return vbox;
}


/*  private functions  */

static void
gimp_transform_options_grid_notify (GimpTransformOptions *options,
                                    GParamSpec           *pspec,
                                    GtkWidget            *density_box)
{
  gtk_widget_set_sensitive (density_box,
                            options->grid_type !=
                            GIMP_TRANSFORM_GRID_TYPE_NONE);
}
