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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* gtkhtml-color-palette.c
*
* Copyright (C) 2008 Novell, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* 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 Lesser 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 "gtkhtml-color-palette.h"
/* XXX GtkhtmlColorPalette has a minimal API specifically designed for
* use with GtkhtmlColorCombo, but there's plenty of room to grow if
* this proves useful elsewhere. */
#include <string.h>
#include <glib/gi18n-lib.h>
enum {
CHANGED,
LAST_SIGNAL
};
struct _GtkhtmlColorPalettePrivate {
GHashTable *index;
GSList *list;
};
static gpointer parent_class;
static guint signals[LAST_SIGNAL];
static void
color_palette_finalize (GObject *object)
{
GtkhtmlColorPalettePrivate *priv;
priv = GTKHTML_COLOR_PALETTE (object)->priv;
g_hash_table_destroy (priv->index);
g_slist_free (priv->list);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
color_palette_class_init (GtkhtmlColorPaletteClass *class)
{
GObjectClass *object_class;
parent_class = g_type_class_peek_parent (class);
g_type_class_add_private (class, sizeof (GtkhtmlColorPalettePrivate));
object_class = G_OBJECT_CLASS (class);
object_class->finalize = color_palette_finalize;
signals[CHANGED] = g_signal_new (
"changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
color_palette_init (GtkhtmlColorPalette *palette)
{
GHashTable *index;
index = g_hash_table_new_full (
(GHashFunc) gdk_color_hash,
(GEqualFunc) gdk_color_equal,
(GDestroyNotify) gdk_color_free,
(GDestroyNotify) NULL);
palette->priv = G_TYPE_INSTANCE_GET_PRIVATE (
palette, GTKHTML_TYPE_COLOR_PALETTE,
GtkhtmlColorPalettePrivate);
palette->priv->index = index;
}
GType
gtkhtml_color_palette_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0)) {
static const GTypeInfo type_info = {
sizeof (GtkhtmlColorPaletteClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) color_palette_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (GtkhtmlColorPalette),
0, /* n_preallocs */
(GInstanceInitFunc) color_palette_init,
NULL /* value_table */
};
type = g_type_register_static (
G_TYPE_OBJECT, "GtkhtmlColorPalette", &type_info, 0);
}
return type;
}
GtkhtmlColorPalette *
gtkhtml_color_palette_new (void)
{
return g_object_new (GTKHTML_TYPE_COLOR_PALETTE, NULL);
}
void
gtkhtml_color_palette_add_color (GtkhtmlColorPalette *palette,
const GdkColor *color)
{
GSList *list, *link;
g_return_if_fail (GTKHTML_IS_COLOR_PALETTE (palette));
g_return_if_fail (color != NULL);
list = palette->priv->list;
link = g_hash_table_lookup (palette->priv->index, color);
if (link == NULL) {
list = g_slist_prepend (list, gdk_color_copy (color));
g_hash_table_insert (palette->priv->index, list->data, list);
} else {
list = g_slist_remove_link (list, link);
list = g_slist_concat (link, list);
}
palette->priv->list = list;
g_signal_emit (G_OBJECT (palette), signals[CHANGED], 0);
}
GSList *
gtkhtml_color_palette_list_colors (GtkhtmlColorPalette *palette)
{
GSList *list, *iter;
g_return_val_if_fail (GTKHTML_IS_COLOR_PALETTE (palette), NULL);
list = g_slist_copy (palette->priv->list);
for (iter = list; iter != NULL; iter = iter->next)
iter->data = gdk_color_copy (iter->data);
return list;
}
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