/*
* Copyright (C) 2014 Red Hat, Inc. (www.redhat.com)
*
* This program 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Authors: Milan Crha <mcrha@redhat.com>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include "e-spinner.h"
#define MAIN_IMAGE_FILENAME "working.png"
#define FRAME_SIZE 22
#define FRAME_TIMEOUT_MS 100
struct _ESpinnerPrivate
{
GSList *pixbufs;
GSList *current_frame; /* link of 'pixbufs' */
gboolean active;
guint timeout_id;
};
enum {
PROP_0,
PROP_ACTIVE
};
G_DEFINE_TYPE (ESpinner, e_spinner, GTK_TYPE_IMAGE)
static gboolean
e_spinner_update_frame_cb (gpointer user_data)
{
ESpinner *spinner = user_data;
g_return_val_if_fail (E_IS_SPINNER (spinner), FALSE);
if (spinner->priv->current_frame)
spinner->priv->current_frame = spinner->priv->current_frame->next;
if (!spinner->priv->current_frame)
spinner->priv->current_frame = spinner->priv->pixbufs;
if (!spinner->priv->current_frame) {
g_warn_if_reached ();
return FALSE;
}
gtk_image_set_from_pixbuf (GTK_IMAGE (spinner), spinner->priv->current_frame->data);
return TRUE;
}
static void
e_spinner_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_ACTIVE:
e_spinner_set_active (
E_SPINNER (object),
g_value_get_boolean (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
e_spinner_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_ACTIVE:
g_value_set_boolean (
value,
e_spinner_get_active (E_SPINNER (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
e_spinner_constructed (GObject *object)
{
ESpinner *spinner;
GdkPixbuf *main_pixbuf;
gint xx, yy, width, height;
GError *error = NULL;
/* Chain up to parent's method. */
G_OBJECT_CLASS (e_spinner_parent_class)->constructed (object);
spinner = E_SPINNER (object);
main_pixbuf = gdk_pixbuf_new_from_file (EVOLUTION_IMAGESDIR G_DIR_SEPARATOR_S MAIN_IMAGE_FILENAME, &error);
if (!main_pixbuf) {
g_warning ("%s: Failed to load image: %s", error ? error->message : "Unknown error", G_STRFUNC);
g_clear_error (&error);
return;
}
width = gdk_pixbuf_get_width (main_pixbuf);
height = gdk_pixbuf_get_height (main_pixbuf);
for (yy = 0; yy < height; yy += FRAME_SIZE) {
for (xx = 0; xx < width; xx+= FRAME_SIZE) {
GdkPixbuf *frame;
frame = gdk_pixbuf_new_subpixbuf (main_pixbuf, xx, yy, FRAME_SIZE, FRAME_SIZE);
if (frame)
spinner->priv->pixbufs = g_slist_prepend (spinner->priv->pixbufs, frame);
}
}
g_object_unref (main_pixbuf);
spinner->priv->pixbufs = g_slist_reverse (spinner->priv->pixbufs);
spinner->priv->current_frame = spinner->priv->pixbufs;
if (spinner->priv->pixbufs)
gtk_image_set_from_pixbuf (GTK_IMAGE (spinner), spinner->priv->pixbufs->data);
}
static void
e_spinner_dispose (GObject *object)
{
/* This resets the timeout_id too */
e_spinner_set_active (E_SPINNER (object), FALSE);
/* Chain up to parent's method. */
G_OBJECT_CLASS (e_spinner_parent_class)->dispose (object);
}
static void
e_spinner_finalize (GObject *object)
{
ESpinner *spinner = E_SPINNER (object);
g_slist_free_full (spinner->priv->pixbufs, g_object_unref);
spinner->priv->pixbufs = NULL;
spinner->priv->current_frame = NULL;
g_warn_if_fail (spinner->priv->timeout_id == 0);
/* Chain up to parent's method. */
G_OBJECT_CLASS (e_spinner_parent_class)->finalize (object);
}
static void
e_spinner_class_init (ESpinnerClass *klass)
{
GObjectClass *object_class;
g_type_class_add_private (klass, sizeof (ESpinnerPrivate));
object_class = G_OBJECT_CLASS (klass);
object_class->set_property = e_spinner_set_property;
object_class->get_property = e_spinner_get_property;
object_class->dispose = e_spinner_dispose;
object_class->finalize = e_spinner_finalize;
object_class->constructed = e_spinner_constructed;
/**
* ESpinner:active:
*
* Whether the animation is active.
**/
g_object_class_install_property (
object_class,
PROP_ACTIVE,
g_param_spec_boolean (
"active",
"Active",
"Whether the animation is active",
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
}
static void
e_spinner_init (ESpinner *spinner)
{
spinner->priv = G_TYPE_INSTANCE_GET_PRIVATE (spinner, E_TYPE_SPINNER, ESpinnerPrivate);
}
GtkWidget *
e_spinner_new (void)
{
return g_object_new (E_TYPE_SPINNER, NULL);
}
gboolean
e_spinner_get_active (ESpinner *spinner)
{
g_return_val_if_fail (E_IS_SPINNER (spinner), FALSE);
return spinner->priv->active;
}
void
e_spinner_set_active (ESpinner *spinner,
gboolean active)
{
g_return_if_fail (E_IS_SPINNER (spinner));
if ((spinner->priv->active ? 1 : 0) == (active ? 1 : 0))
return;
spinner->priv->active = active;
if (spinner->priv->timeout_id) {
g_source_remove (spinner->priv->timeout_id);
spinner->priv->timeout_id = 0;
}
if (spinner->priv->active && spinner->priv->pixbufs)
spinner->priv->timeout_id = g_timeout_add_full (G_PRIORITY_LOW, FRAME_TIMEOUT_MS, e_spinner_update_frame_cb, spinner, NULL);
g_object_notify (G_OBJECT (spinner), "active");
}
void
e_spinner_start (ESpinner *spinner)
{
e_spinner_set_active (spinner, TRUE);
}
void
e_spinner_stop (ESpinner *spinner)
{
e_spinner_set_active (spinner, FALSE);
}
