gimp/app/core/gimpstrokeoptions.c

/* The GIMP -- an image manipulation program
 * Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
 *
 * gimpstrokeoptions.c
 * Copyright (C) 2003 Simon Budig
 *
 * 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 <glib-object.h>

#include "libgimpbase/gimpbase.h"

#include "core-types.h"

#include "config/gimpconfig.h"

#include "gimpstrokeoptions.h"

enum
{
  PROP_0,
  PROP_WIDTH,
  PROP_CAP_STYLE,
  PROP_JOIN_STYLE,
  PROP_MITER,
  PROP_ANTIALIAS,
  PROP_DASH_OFFSET,
  PROP_DASH_INFO
};


static void   gimp_stroke_options_init       (GimpStrokeOptions      *options);
static void   gimp_stroke_options_class_init (GimpStrokeOptionsClass *options_class);

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


static GimpContextClass *parent_class = NULL;


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

  if (! type)
    {
      static const GTypeInfo info =
      {
        sizeof (GimpStrokeOptionsClass),
	(GBaseInitFunc) NULL,
	(GBaseFinalizeFunc) NULL,
	(GClassInitFunc) gimp_stroke_options_class_init,
	NULL,           /* class_finalize */
	NULL,           /* class_data     */
	sizeof (GimpStrokeOptions),
	0,              /* n_preallocs    */
	(GInstanceInitFunc) gimp_stroke_options_init,
      };

      type = g_type_register_static (GIMP_TYPE_CONTEXT,
                                     "GimpStrokeOptions",
                                     &info, 0);
    }

  return type;
}

static void
gimp_stroke_options_class_init (GimpStrokeOptionsClass *klass)
{
  GObjectClass *object_class;
  GParamSpec   *array_spec;

  object_class = G_OBJECT_CLASS (klass);

  parent_class = g_type_class_peek_parent (klass);

  object_class->set_property = gimp_stroke_options_set_property;
  object_class->get_property = gimp_stroke_options_get_property;

  g_object_class_install_property (object_class, PROP_WIDTH,
                                   g_param_spec_double ("width",
                                                        NULL, NULL,
                                                        0.0, 2000.0,
                                                        5.0,
                                                        G_PARAM_READWRITE));

  g_object_class_install_property (object_class, PROP_CAP_STYLE,
                                   g_param_spec_enum ("cap-style",
                                                      NULL, NULL,
                                                      GIMP_TYPE_CAP_STYLE,
                                                      GIMP_CAP_BUTT,
                                                      G_PARAM_READWRITE));

  g_object_class_install_property (object_class, PROP_JOIN_STYLE,
                                   g_param_spec_enum ("join-style",
                                                      NULL, NULL,
                                                      GIMP_TYPE_JOIN_STYLE,
                                                      GIMP_JOIN_MITER,
                                                      G_PARAM_READWRITE));

  g_object_class_install_property (object_class, PROP_MITER,
                                   g_param_spec_double ("miter",
                                                        NULL, NULL,
                                                        0.0, 100.0,
                                                        10.0,
                                                        G_PARAM_READWRITE));

  g_object_class_install_property (object_class, PROP_ANTIALIAS,
                                   g_param_spec_boolean ("antialias",
                                                         NULL, NULL,
                                                         TRUE,
                                                         G_PARAM_READWRITE));

  g_object_class_install_property (object_class, PROP_DASH_OFFSET,
                                   g_param_spec_double ("dash-offset",
                                                        NULL, NULL,
                                                        0.0, 2000.0,
                                                        0.0,
                                                        G_PARAM_READWRITE));

  array_spec = g_param_spec_double ("dash-length", NULL, NULL,
                                    0.0, 2000.0, 1.0, G_PARAM_READWRITE);

  g_object_class_install_property (object_class, PROP_DASH_INFO,
                                   g_param_spec_value_array ("dash-info",
                                                             NULL, NULL,
                                                             array_spec,
                                                             G_PARAM_READWRITE));

}

static void
gimp_stroke_options_init (GimpStrokeOptions *options)
{
  options->width       = 5.0;
  options->cap_style   = GIMP_CAP_BUTT;
  options->join_style  = GIMP_JOIN_MITER;
  options->miter       = 10.0;
  options->antialias   = TRUE;
  options->dash_offset = 0.0;
  options->dash_info   = NULL;
}

static void
gimp_stroke_options_set_property (GObject      *object,
                                  guint         property_id,
                                  const GValue *value,
                                  GParamSpec   *pspec)
{
  GimpStrokeOptions *options;
  GValueArray       *val_array;
  GValue            *item;
  gint               i;
  gdouble            val;

  options = GIMP_STROKE_OPTIONS (object);

  switch (property_id)
    {
    case PROP_WIDTH:
      options->width = g_value_get_double (value);
      break;
    case PROP_CAP_STYLE:
      options->cap_style = g_value_get_enum (value);
      break;
    case PROP_JOIN_STYLE:
      options->join_style = g_value_get_enum (value);
      break;
    case PROP_MITER:
      options->miter = g_value_get_double (value);
      break;
    case PROP_ANTIALIAS:
      options->antialias = g_value_get_boolean (value);
      break;
    case PROP_DASH_OFFSET:
      options->dash_offset = g_value_get_double (value);
      break;
    case PROP_DASH_INFO:
      if (options->dash_info)
        g_array_free (options->dash_info, TRUE);

      val_array = g_value_get_boxed (value);
      if (val_array == NULL || val_array->n_values == 0)
        {
          options->dash_info = NULL;
        }
      else
        {
          options->dash_info = g_array_sized_new (FALSE, FALSE,
                                                  sizeof (gdouble),
                                                  val_array->n_values);


          for (i=0; i < val_array->n_values; i++)
            {
              item = g_value_array_get_nth (val_array, i);

              g_return_if_fail (G_VALUE_HOLDS_DOUBLE (item));

              val = g_value_get_double (item);

              options->dash_info = g_array_append_val (options->dash_info, val);
            }
        }
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
gimp_stroke_options_get_property (GObject    *object,
                                  guint       property_id,
                                  GValue     *value,
                                  GParamSpec *pspec)
{
  GimpStrokeOptions *options;
  GValueArray       *val_array;
  GValue             item;
  gint               i;

  options = GIMP_STROKE_OPTIONS (object);

  switch (property_id)
    {
    case PROP_WIDTH:
      g_value_set_double (value, options->width);
      break;
    case PROP_CAP_STYLE:
      g_value_set_enum (value, options->cap_style);
      break;
    case PROP_JOIN_STYLE:
      g_value_set_enum (value, options->join_style);
      break;
    case PROP_MITER:
      g_value_set_double (value, options->miter);
      break;
    case PROP_ANTIALIAS:
      g_value_set_boolean (value, options->antialias);
      break;
    case PROP_DASH_OFFSET:
      g_value_set_double (value, options->dash_offset);
      break;
    case PROP_DASH_INFO:
      if (options->dash_info)
        g_array_free (options->dash_info, TRUE);

      if (options->dash_info == NULL || options->dash_info->len == 0)
        {
          g_value_set_boxed (value, NULL);
        }
      else
        {
          val_array = g_value_array_new (options->dash_info->len);

          for (i=0; i < options->dash_info->len; i++)
            {
              g_value_set_double (&item, g_array_index (options->dash_info,
                                                        gdouble,
                                                        i));

              g_value_array_append (val_array, &item);
            }
          g_value_set_boxed (value, val_array);
        }
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}