~ubuntu-branches/ubuntu/quantal/gimp/quantal-updates

/* LIBGIMP - The GIMP Library

 * Copyright (C) 1995-1999 Peter Mattis and Spencer Kimball

 *

 * gimpunitcombobox.c

 * Copyright (C) 2004, 2008  Sven Neumann <sven@gimp.org>

 *

 * 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 3 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

 * Library 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, see

 * <http://www.gnu.org/licenses/>.

 */

#include "config.h"

#include <gtk/gtk.h>

#include "gimpwidgetstypes.h"

#include "gimpunitcombobox.h"

#include "gimpunitstore.h"

/**

 * SECTION: gimpunitcombobox

 * @title: GimpUnitComboBox

 * @short_description: A #GtkComboBox to select a #GimpUnit.

 * @see_also: #GimpUnit, #GimpUnitStore

 *

 * #GimpUnitComboBox allows to select units stored in a #GimpUnitStore.

 * It replaces the deprecated #GimpUnitMenu.

 **/

static void  gimp_unit_combo_box_style_set (GtkWidget *widget,

                                            GtkStyle  *prev_style);

G_DEFINE_TYPE (GimpUnitComboBox, gimp_unit_combo_box, GTK_TYPE_COMBO_BOX)

#define parent_class gimp_unit_combo_box_parent_class

static void

gimp_unit_combo_box_class_init (GimpUnitComboBoxClass *klass)

{

  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);

  widget_class->style_set = gimp_unit_combo_box_style_set;

  gtk_widget_class_install_style_property (widget_class,

                                           g_param_spec_double ("label-scale",

                                                                NULL, NULL,

                                                                0.0,

                                                                G_MAXDOUBLE,

                                                                1.0,

                                                                GIMP_PARAM_READABLE));

}

static void

gimp_unit_combo_box_init (GimpUnitComboBox *combo)

{

  GtkCellLayout   *layout = GTK_CELL_LAYOUT (combo);

  GtkCellRenderer *cell;

  cell = gtk_cell_renderer_text_new ();

  gtk_cell_layout_pack_start (layout, cell, TRUE);

  gtk_cell_layout_set_attributes (layout, cell,

                                  "text", GIMP_UNIT_STORE_UNIT_LONG_FORMAT,

                                  NULL);

}

static void

gimp_unit_combo_box_style_set (GtkWidget *widget,

                               GtkStyle  *prev_style)

{

  GtkCellLayout   *layout;

  GtkCellRenderer *cell;

  gdouble          scale;

  GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);

  gtk_widget_style_get (widget, "label-scale", &scale, NULL);

  /*  hackedehack ...  */

  layout = GTK_CELL_LAYOUT (gtk_bin_get_child (GTK_BIN (widget)));

  gtk_cell_layout_clear (layout);

  cell = g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,

                       "scale", scale,

                       NULL);

  gtk_cell_layout_pack_start (layout, cell, TRUE);

  gtk_cell_layout_set_attributes (layout, cell,

                                  "text",  GIMP_UNIT_STORE_UNIT_SHORT_FORMAT,

                                  NULL);

}

/**

 * gimp_unit_combo_box_new:

 *

 * Return value: a new #GimpUnitComboBox.

 **/

GtkWidget *

gimp_unit_combo_box_new (void)

{

  GtkWidget     *combo_box;

  GimpUnitStore *store;

  store = gimp_unit_store_new (0);

  combo_box = g_object_new (GIMP_TYPE_UNIT_COMBO_BOX,

                            "model", store,

                            NULL);

  g_object_unref (store);

  return combo_box;

}

/**

 * gimp_unit_combo_box_new_with_model:

 * @model: a GimpUnitStore

 *

 * Return value: a new #GimpUnitComboBox.

 **/

GtkWidget *

gimp_unit_combo_box_new_with_model (GimpUnitStore *model)

{

  return g_object_new (GIMP_TYPE_UNIT_COMBO_BOX,

                       "model", model,

                       NULL);

}

GimpUnit

gimp_unit_combo_box_get_active (GimpUnitComboBox *combo)

{

  GtkTreeIter iter;

  gint        unit;

  g_return_val_if_fail (GIMP_IS_UNIT_COMBO_BOX (combo), -1);

  gtk_combo_box_get_active_iter (GTK_COMBO_BOX (combo), &iter);

  gtk_tree_model_get (gtk_combo_box_get_model (GTK_COMBO_BOX (combo)), &iter,

                      GIMP_UNIT_STORE_UNIT, &unit,

                      -1);

  return (GimpUnit) unit;

}

void

gimp_unit_combo_box_set_active (GimpUnitComboBox *combo,

                                GimpUnit          unit)

{

  GtkTreeModel *model;

  GtkTreeIter   iter;

  gboolean      iter_valid;

  g_return_if_fail (GIMP_IS_UNIT_COMBO_BOX (combo));

  model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));

  for (iter_valid = gtk_tree_model_get_iter_first (model, &iter);

       iter_valid;

       iter_valid = gtk_tree_model_iter_next (model, &iter))

    {

      gint iter_unit;

      gtk_tree_model_get (model, &iter,

                          GIMP_UNIT_STORE_UNIT, &iter_unit,

                          -1);

      if (unit == (GimpUnit) iter_unit)

        {

          gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);

          break;

        }

    }

}