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/*
* color-history-model.c
* Copyright (C) 2008-2009 Jim Evins <evins@snaught.com>.
*
* This file is part of gLabels.
*
* gLabels 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.
*
* gLabels 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 gLabels. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "color-history-model.h"
#include <gio/gio.h>
#include "marshal.h"
/*========================================================*/
/* Private types. */
/*========================================================*/
struct _glColorHistoryModelPrivate {
GSettings *history;
guint max_n;
};
enum {
CHANGED,
LAST_SIGNAL
};
/*========================================================*/
/* Private globals. */
/*========================================================*/
static guint signals[LAST_SIGNAL] = {0};
/*========================================================*/
/* Private function prototypes. */
/*========================================================*/
static void gl_color_history_model_finalize (GObject *object);
static void history_changed_cb (glColorHistoryModel *this);
static guint *get_color_array (glColorHistoryModel *this,
guint *n_elements);
static void set_color_array (glColorHistoryModel *this,
guint *array,
guint n_elements);
/*****************************************************************************/
/* Object infrastructure. */
/*****************************************************************************/
G_DEFINE_TYPE (glColorHistoryModel, gl_color_history_model, G_TYPE_OBJECT);
/*****************************************************************************/
/* Class Init Function. */
/*****************************************************************************/
static void
gl_color_history_model_class_init (glColorHistoryModelClass *class)
{
GObjectClass *gobject_class = (GObjectClass *) class;
gl_color_history_model_parent_class = g_type_class_peek_parent (class);
gobject_class->finalize = gl_color_history_model_finalize;
signals[CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (glColorHistoryModelClass, changed),
NULL, NULL,
gl_marshal_VOID__VOID,
G_TYPE_NONE,
0);
}
/*****************************************************************************/
/* Object Instance Init Function. */
/*****************************************************************************/
static void
gl_color_history_model_init (glColorHistoryModel *this)
{
this->priv = g_new0 (glColorHistoryModelPrivate, 1);
this->priv->history = g_settings_new ("org.gnome.glabels-3.history");
g_return_if_fail (this->priv->history != NULL);
g_signal_connect_swapped (G_OBJECT (this->priv->history),
"changed::recent-colors",
G_CALLBACK (history_changed_cb), this);
}
/*****************************************************************************/
/* Finalize Method. */
/*****************************************************************************/
static void
gl_color_history_model_finalize (GObject *object)
{
glColorHistoryModel *this;
g_return_if_fail (object && IS_GL_COLOR_HISTORY_MODEL (object));
this = GL_COLOR_HISTORY_MODEL (object);
g_object_unref (G_OBJECT(this->priv->history));
g_free (this->priv);
G_OBJECT_CLASS (gl_color_history_model_parent_class)->finalize (object);
}
/*****************************************************************************/
/** New Object Generator. */
/*****************************************************************************/
glColorHistoryModel *
gl_color_history_model_new (guint n)
{
glColorHistoryModel *this;
this = g_object_new (TYPE_GL_COLOR_HISTORY_MODEL, NULL);
this->priv->max_n = n;
return this;
}
/*****************************************************************************/
/* Add color to history. */
/*****************************************************************************/
void
gl_color_history_model_add_color (glColorHistoryModel *this,
guint color)
{
guint *old;
guint *new;
guint i, n;
old = get_color_array (this, &n);
new = g_new0 (guint, this->priv->max_n);
new[0] = color;
for ( i = 0; (i < this->priv->max_n) && (i < n); i++ )
{
new[i+1] = old[i];
}
set_color_array (this, new, i);
g_free (old);
g_free (new);
}
/*****************************************************************************/
/* History changed callback. */
/*****************************************************************************/
static void
history_changed_cb (glColorHistoryModel *this)
{
g_signal_emit (G_OBJECT(this), signals[CHANGED], 0);
}
/*****************************************************************************/
/* Get list of colors. */
/*****************************************************************************/
static guint *
get_color_array (glColorHistoryModel *this,
guint *n_elements)
{
GVariant *value;
GVariant *child_value;
gsize i;
guint *array;
value = g_settings_get_value (this->priv->history, "recent-colors");
*n_elements = g_variant_n_children (value);
array = g_new0 (guint, *n_elements);
for ( i = 0; i < *n_elements; i++ )
{
child_value = g_variant_get_child_value (value, i);
array[i] = g_variant_get_uint32 (child_value);
g_variant_unref (child_value);
}
g_variant_unref (value);
return array;
}
/*****************************************************************************/
/* Set list of colors. */
/*****************************************************************************/
static void
set_color_array (glColorHistoryModel *this,
guint *array,
guint n_elements)
{
GVariant *value;
GVariant **child_values;
gsize i;
child_values = g_new (GVariant *, n_elements);
for ( i = 0; i < n_elements; i++ )
{
child_values[i] = g_variant_ref_sink (g_variant_new_uint32 (array[i]));
}
g_variant_new_array (G_VARIANT_TYPE ("u"), child_values, n_elements);
g_settings_set_value (this->priv->history, "recent-colors", value);
g_variant_unref (value);
}
/*****************************************************************************/
/* Get color. */
/*****************************************************************************/
guint
gl_color_history_model_get_color (glColorHistoryModel *this,
guint i)
{
guint *array;
guint color = 0;
guint n;
array = get_color_array (this, &n);
if ( array && (i < n) )
{
color = array[i];
}
g_free (array);
return color;
}
/*
* Local Variables: -- emacs
* mode: C -- emacs
* c-basic-offset: 8 -- emacs
* tab-width: 8 -- emacs
* indent-tabs-mode: nil -- emacs
* End: -- emacs
*/
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