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xed/gedit/gedit-spinner.c

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/*
* gedit-spinner.c
* This file is part of gedit
*
* Copyright (C) 2005 - Paolo Maggi
* Copyright (C) 2002-2004 Marco Pesenti Gritti
* Copyright (C) 2004 Christian Persch
* Copyright (C) 2000 - Eazel, Inc.
*
* 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.
*/
/*
* This widget was originally written by Andy Hertzfeld <andy@eazel.com> for
* Caja. It was then modified by Marco Pesenti Gritti and Christian Persch
* for Epiphany.
*
* Modified by the gedit Team, 2005. See the AUTHORS file for a
* list of people on the gedit Team.
* See the ChangeLog files for a list of changes.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gedit-spinner.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gtk/gtk.h>
/* Spinner cache implementation */
#define GEDIT_TYPE_SPINNER_CACHE (gedit_spinner_cache_get_type())
#define GEDIT_SPINNER_CACHE(object) (G_TYPE_CHECK_INSTANCE_CAST((object), GEDIT_TYPE_SPINNER_CACHE, GeditSpinnerCache))
#define GEDIT_SPINNER_CACHE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GEDIT_TYPE_SPINNER_CACHE, GeditSpinnerCacheClass))
#define GEDIT_IS_SPINNER_CACHE(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), GEDIT_TYPE_SPINNER_CACHE))
#define GEDIT_IS_SPINNER_CACHE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GEDIT_TYPE_SPINNER_CACHE))
#define GEDIT_SPINNER_CACHE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GEDIT_TYPE_SPINNER_CACHE, GeditSpinnerCacheClass))
typedef struct _GeditSpinnerCache GeditSpinnerCache;
typedef struct _GeditSpinnerCacheClass GeditSpinnerCacheClass;
typedef struct _GeditSpinnerCachePrivate GeditSpinnerCachePrivate;
struct _GeditSpinnerCacheClass
{
GObjectClass parent_class;
};
struct _GeditSpinnerCache
{
GObject parent_object;
/*< private >*/
GeditSpinnerCachePrivate *priv;
};
#define GEDIT_SPINNER_CACHE_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), GEDIT_TYPE_SPINNER_CACHE, GeditSpinnerCachePrivate))
struct _GeditSpinnerCachePrivate
{
/* Hash table of GdkScreen -> GeditSpinnerCacheData */
GHashTable *hash;
};
typedef struct
{
guint ref_count;
GtkIconSize size;
gint width;
gint height;
GdkPixbuf **animation_pixbufs;
guint n_animation_pixbufs;
} GeditSpinnerImages;
#define LAST_ICON_SIZE GTK_ICON_SIZE_DIALOG + 1
#define SPINNER_ICON_NAME "process-working"
#define SPINNER_FALLBACK_ICON_NAME "mate-spinner"
#define GEDIT_SPINNER_IMAGES_INVALID ((GeditSpinnerImages *) 0x1)
typedef struct
{
GdkScreen *screen;
GtkIconTheme *icon_theme;
GeditSpinnerImages *images[LAST_ICON_SIZE];
} GeditSpinnerCacheData;
static void gedit_spinner_cache_class_init (GeditSpinnerCacheClass *klass);
static void gedit_spinner_cache_init (GeditSpinnerCache *cache);
static GObjectClass *gedit_spinner_cache_parent_class;
static GType
gedit_spinner_cache_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0))
{
const GTypeInfo our_info =
{
sizeof (GeditSpinnerCacheClass),
NULL,
NULL,
(GClassInitFunc) gedit_spinner_cache_class_init,
NULL,
NULL,
sizeof (GeditSpinnerCache),
0,
(GInstanceInitFunc) gedit_spinner_cache_init
};
type = g_type_register_static (G_TYPE_OBJECT,
"GeditSpinnerCache",
&our_info, 0);
}
return type;
}
static GeditSpinnerImages *
gedit_spinner_images_ref (GeditSpinnerImages *images)
{
g_return_val_if_fail (images != NULL, NULL);
images->ref_count++;
return images;
}
static void
gedit_spinner_images_unref (GeditSpinnerImages *images)
{
g_return_if_fail (images != NULL);
images->ref_count--;
if (images->ref_count == 0)
{
guint i;
/* LOG ("Freeing spinner images %p for size %d", images, images->size); */
for (i = 0; i < images->n_animation_pixbufs; ++i)
{
g_object_unref (images->animation_pixbufs[i]);
}
g_free (images->animation_pixbufs);
g_free (images);
}
}
static void
gedit_spinner_cache_data_unload (GeditSpinnerCacheData *data)
{
GtkIconSize size;
GeditSpinnerImages *images;
g_return_if_fail (data != NULL);
/* LOG ("GeditSpinnerDataCache unload for screen %p", data->screen); */
for (size = GTK_ICON_SIZE_INVALID; size < LAST_ICON_SIZE; ++size)
{
images = data->images[size];
data->images[size] = NULL;
if (images != NULL && images != GEDIT_SPINNER_IMAGES_INVALID)
{
gedit_spinner_images_unref (images);
}
}
}
static GdkPixbuf *
extract_frame (GdkPixbuf *grid_pixbuf,
int x,
int y,
int size)
{
GdkPixbuf *pixbuf;
if (x + size > gdk_pixbuf_get_width (grid_pixbuf) ||
y + size > gdk_pixbuf_get_height (grid_pixbuf))
{
return NULL;
}
pixbuf = gdk_pixbuf_new_subpixbuf (grid_pixbuf,
x, y,
size, size);
g_return_val_if_fail (pixbuf != NULL, NULL);
return pixbuf;
}
static GdkPixbuf *
scale_to_size (GdkPixbuf *pixbuf,
int dw,
int dh)
{
GdkPixbuf *result;
int pw, ph;
g_return_val_if_fail (pixbuf != NULL, NULL);
pw = gdk_pixbuf_get_width (pixbuf);
ph = gdk_pixbuf_get_height (pixbuf);
if (pw != dw || ph != dh)
{
result = gdk_pixbuf_scale_simple (pixbuf, dw, dh,
GDK_INTERP_BILINEAR);
g_object_unref (pixbuf);
return result;
}
return pixbuf;
}
static GeditSpinnerImages *
gedit_spinner_images_load (GdkScreen *screen,
GtkIconTheme *icon_theme,
GtkIconSize icon_size)
{
GeditSpinnerImages *images;
GdkPixbuf *icon_pixbuf, *pixbuf;
GtkIconInfo *icon_info = NULL;
int grid_width, grid_height, x, y, requested_size, size, isw, ish, n;
const char *icon;
GSList *list = NULL, *l;
/* LOG ("GeditSpinnerCacheData loading for screen %p at size %d", screen, icon_size); */
/* START_PROFILER ("loading spinner animation") */
if (!gtk_icon_size_lookup_for_settings (gtk_settings_get_for_screen (screen),
icon_size, &isw, &ish))
goto loser;
requested_size = MAX (ish, isw);
/* Load the animation. The 'rest icon' is the 0th frame */
icon_info = gtk_icon_theme_lookup_icon (icon_theme,
SPINNER_ICON_NAME,
requested_size, 0);
if (icon_info == NULL)
{
g_warning ("Throbber animation not found");
/* If the icon naming spec compliant name wasn't found, try the old name */
icon_info = gtk_icon_theme_lookup_icon (icon_theme,
SPINNER_FALLBACK_ICON_NAME,
requested_size, 0);
if (icon_info == NULL)
{
g_warning ("Throbber fallback animation not found either");
goto loser;
}
}
g_assert (icon_info != NULL);
size = gtk_icon_info_get_base_size (icon_info);
icon = gtk_icon_info_get_filename (icon_info);
if (icon == NULL)
goto loser;
icon_pixbuf = gdk_pixbuf_new_from_file (icon, NULL);
gtk_icon_info_free (icon_info);
icon_info = NULL;
if (icon_pixbuf == NULL)
{
g_warning ("Could not load the spinner file");
goto loser;
}
grid_width = gdk_pixbuf_get_width (icon_pixbuf);
grid_height = gdk_pixbuf_get_height (icon_pixbuf);
n = 0;
for (y = 0; y < grid_height; y += size)
{
for (x = 0; x < grid_width ; x += size)
{
pixbuf = extract_frame (icon_pixbuf, x, y, size);
if (pixbuf)
{
list = g_slist_prepend (list, pixbuf);
++n;
}
else
{
g_warning ("Cannot extract frame (%d, %d) from the grid\n", x, y);
}
}
}
g_object_unref (icon_pixbuf);
if (list == NULL)
goto loser;
/* g_assert (n > 0); */
if (size > requested_size)
{
for (l = list; l != NULL; l = l->next)
{
l->data = scale_to_size (l->data, isw, ish);
}
}
/* Now we've successfully got all the data */
images = g_new (GeditSpinnerImages, 1);
images->ref_count = 1;
images->size = icon_size;
images->width = images->height = requested_size;
images->n_animation_pixbufs = n;
images->animation_pixbufs = g_new (GdkPixbuf *, n);
for (l = list; l != NULL; l = l->next)
{
g_assert (l->data != NULL);
images->animation_pixbufs[--n] = l->data;
}
g_assert (n == 0);
g_slist_free (list);
/* STOP_PROFILER ("loading spinner animation") */
return images;
loser:
if (icon_info)
{
gtk_icon_info_free (icon_info);
}
g_slist_foreach (list, (GFunc) g_object_unref, NULL);
/* STOP_PROFILER ("loading spinner animation") */
return NULL;
}
static GeditSpinnerCacheData *
gedit_spinner_cache_data_new (GdkScreen *screen)
{
GeditSpinnerCacheData *data;
data = g_new0 (GeditSpinnerCacheData, 1);
data->screen = screen;
data->icon_theme = gtk_icon_theme_get_for_screen (screen);
g_signal_connect_swapped (data->icon_theme,
"changed",
G_CALLBACK (gedit_spinner_cache_data_unload),
data);
return data;
}
static void
gedit_spinner_cache_data_free (GeditSpinnerCacheData *data)
{
g_return_if_fail (data != NULL);
g_return_if_fail (data->icon_theme != NULL);
g_signal_handlers_disconnect_by_func (data->icon_theme,
G_CALLBACK (gedit_spinner_cache_data_unload),
data);
gedit_spinner_cache_data_unload (data);
g_free (data);
}
static GeditSpinnerImages *
gedit_spinner_cache_get_images (GeditSpinnerCache *cache,
GdkScreen *screen,
GtkIconSize icon_size)
{
GeditSpinnerCachePrivate *priv = cache->priv;
GeditSpinnerCacheData *data;
GeditSpinnerImages *images;
/* LOG ("Getting animation images for screen %p at size %d", screen, icon_size); */
g_return_val_if_fail (icon_size >= 0 && icon_size < LAST_ICON_SIZE, NULL);
/* Backward compat: "invalid" meant "native" size which doesn't exist anymore */
if (icon_size == GTK_ICON_SIZE_INVALID)
{
icon_size = GTK_ICON_SIZE_DIALOG;
}
data = g_hash_table_lookup (priv->hash, screen);
if (data == NULL)
{
data = gedit_spinner_cache_data_new (screen);
/* FIXME: think about what happens when the screen's display is closed later on */
g_hash_table_insert (priv->hash, screen, data);
}
images = data->images[icon_size];
if (images == GEDIT_SPINNER_IMAGES_INVALID)
{
/* Load failed, but don't try endlessly again! */
return NULL;
}
if (images != NULL)
{
/* Return cached data */
return gedit_spinner_images_ref (images);
}
images = gedit_spinner_images_load (screen, data->icon_theme, icon_size);
if (images == NULL)
{
/* Mark as failed-to-load */
data->images[icon_size] = GEDIT_SPINNER_IMAGES_INVALID;
return NULL;
}
data->images[icon_size] = images;
return gedit_spinner_images_ref (images);
}
static void
gedit_spinner_cache_init (GeditSpinnerCache *cache)
{
GeditSpinnerCachePrivate *priv;
priv = cache->priv = GEDIT_SPINNER_CACHE_GET_PRIVATE (cache);
/* LOG ("GeditSpinnerCache initialising"); */
priv->hash = g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) gedit_spinner_cache_data_free);
}
static void
gedit_spinner_cache_finalize (GObject *object)
{
GeditSpinnerCache *cache = GEDIT_SPINNER_CACHE (object);
GeditSpinnerCachePrivate *priv = cache->priv;
g_hash_table_destroy (priv->hash);
/* LOG ("GeditSpinnerCache finalised"); */
G_OBJECT_CLASS (gedit_spinner_cache_parent_class)->finalize (object);
}
static void
gedit_spinner_cache_class_init (GeditSpinnerCacheClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
gedit_spinner_cache_parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gedit_spinner_cache_finalize;
g_type_class_add_private (object_class, sizeof (GeditSpinnerCachePrivate));
}
static GeditSpinnerCache *spinner_cache = NULL;
static GeditSpinnerCache *
gedit_spinner_cache_ref (void)
{
if (spinner_cache == NULL)
{
GeditSpinnerCache **cache_ptr;
spinner_cache = g_object_new (GEDIT_TYPE_SPINNER_CACHE, NULL);
cache_ptr = &spinner_cache;
g_object_add_weak_pointer (G_OBJECT (spinner_cache),
(gpointer *) cache_ptr);
return spinner_cache;
}
return g_object_ref (spinner_cache);
}
/* Spinner implementation */
#define SPINNER_TIMEOUT 125 /* ms */
#define GEDIT_SPINNER_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), GEDIT_TYPE_SPINNER, GeditSpinnerPrivate))
struct _GeditSpinnerPrivate
{
GtkIconTheme *icon_theme;
GeditSpinnerCache *cache;
GtkIconSize size;
GeditSpinnerImages *images;
guint current_image;
guint timeout;
guint timer_task;
guint spinning : 1;
guint need_load : 1;
};
static void gedit_spinner_class_init (GeditSpinnerClass *class);
static void gedit_spinner_init (GeditSpinner *spinner);
static GObjectClass *parent_class;
GType
gedit_spinner_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0))
{
const GTypeInfo our_info =
{
sizeof (GeditSpinnerClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gedit_spinner_class_init,
NULL,
NULL, /* class_data */
sizeof (GeditSpinner),
0, /* n_preallocs */
(GInstanceInitFunc) gedit_spinner_init
};
type = g_type_register_static (GTK_TYPE_WIDGET,
"GeditSpinner",
&our_info, 0);
}
return type;
}
static gboolean
gedit_spinner_load_images (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
if (priv->need_load)
{
/* START_PROFILER ("gedit_spinner_load_images") */
priv->images =
gedit_spinner_cache_get_images (priv->cache,
gtk_widget_get_screen (GTK_WIDGET (spinner)),
priv->size);
/* STOP_PROFILER ("gedit_spinner_load_images") */
priv->current_image = 0; /* 'rest' icon */
priv->need_load = FALSE;
}
return priv->images != NULL;
}
static void
gedit_spinner_unload_images (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
if (priv->images != NULL)
{
gedit_spinner_images_unref (priv->images);
priv->images = NULL;
}
priv->current_image = 0;
priv->need_load = TRUE;
}
static void
icon_theme_changed_cb (GtkIconTheme *icon_theme,
GeditSpinner *spinner)
{
gedit_spinner_unload_images (spinner);
gtk_widget_queue_resize (GTK_WIDGET (spinner));
}
static void
gedit_spinner_init (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv;
priv = spinner->priv = GEDIT_SPINNER_GET_PRIVATE (spinner);
GTK_WIDGET_SET_FLAGS (GTK_WIDGET (spinner), GTK_NO_WINDOW);
priv->cache = gedit_spinner_cache_ref ();
priv->size = GTK_ICON_SIZE_DIALOG;
priv->spinning = FALSE;
priv->timeout = SPINNER_TIMEOUT;
priv->need_load = TRUE;
}
static int
gedit_spinner_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GeditSpinner *spinner = GEDIT_SPINNER (widget);
GeditSpinnerPrivate *priv = spinner->priv;
GeditSpinnerImages *images;
GdkPixbuf *pixbuf;
GdkGC *gc;
int x_offset, y_offset, width, height;
GdkRectangle pix_area, dest;
if (!GTK_WIDGET_DRAWABLE (spinner))
{
return FALSE;
}
if (priv->need_load &&
!gedit_spinner_load_images (spinner))
{
return FALSE;
}
images = priv->images;
if (images == NULL)
{
return FALSE;
}
/* Otherwise |images| will be NULL anyway */
g_assert (images->n_animation_pixbufs > 0);
g_assert (priv->current_image >= 0 &&
priv->current_image < images->n_animation_pixbufs);
pixbuf = images->animation_pixbufs[priv->current_image];
g_assert (pixbuf != NULL);
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
/* Compute the offsets for the image centered on our allocation */
x_offset = (widget->allocation.width - width) / 2;
y_offset = (widget->allocation.height - height) / 2;
pix_area.x = x_offset + widget->allocation.x;
pix_area.y = y_offset + widget->allocation.y;
pix_area.width = width;
pix_area.height = height;
if (!gdk_rectangle_intersect (&event->area, &pix_area, &dest))
{
return FALSE;
}
gc = gdk_gc_new (widget->window);
gdk_draw_pixbuf (widget->window, gc, pixbuf,
dest.x - x_offset - widget->allocation.x,
dest.y - y_offset - widget->allocation.y,
dest.x, dest.y,
dest.width, dest.height,
GDK_RGB_DITHER_MAX, 0, 0);
g_object_unref (gc);
return FALSE;
}
static gboolean
bump_spinner_frame_cb (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
/* This can happen when we've unloaded the images on a theme
* change, but haven't been in the queued size request yet.
* Just skip this update.
*/
if (priv->images == NULL)
return TRUE;
priv->current_image++;
if (priv->current_image >= priv->images->n_animation_pixbufs)
{
/* the 0th frame is the 'rest' icon */
priv->current_image = MIN (1, priv->images->n_animation_pixbufs);
}
gtk_widget_queue_draw (GTK_WIDGET (spinner));
/* run again */
return TRUE;
}
/**
* gedit_spinner_start:
* @spinner: a #GeditSpinner
*
* Start the spinner animation.
**/
void
gedit_spinner_start (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
priv->spinning = TRUE;
if (GTK_WIDGET_MAPPED (GTK_WIDGET (spinner)) &&
priv->timer_task == 0 &&
gedit_spinner_load_images (spinner))
{
/* the 0th frame is the 'rest' icon */
priv->current_image = MIN (1, priv->images->n_animation_pixbufs);
priv->timer_task = g_timeout_add_full (G_PRIORITY_LOW,
priv->timeout,
(GSourceFunc) bump_spinner_frame_cb,
spinner,
NULL);
}
}
static void
gedit_spinner_remove_update_callback (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
if (priv->timer_task != 0)
{
g_source_remove (priv->timer_task);
priv->timer_task = 0;
}
}
/**
* gedit_spinner_stop:
* @spinner: a #GeditSpinner
*
* Stop the spinner animation.
**/
void
gedit_spinner_stop (GeditSpinner *spinner)
{
GeditSpinnerPrivate *priv = spinner->priv;
priv->spinning = FALSE;
priv->current_image = 0;
if (priv->timer_task != 0)
{
gedit_spinner_remove_update_callback (spinner);
if (GTK_WIDGET_MAPPED (GTK_WIDGET (spinner)))
gtk_widget_queue_draw (GTK_WIDGET (spinner));
}
}
/*
* gedit_spinner_set_size:
* @spinner: a #GeditSpinner
* @size: the size of type %GtkIconSize
*
* Set the size of the spinner.
**/
void
gedit_spinner_set_size (GeditSpinner *spinner,
GtkIconSize size)
{
if (size == GTK_ICON_SIZE_INVALID)
{
size = GTK_ICON_SIZE_DIALOG;
}
if (size != spinner->priv->size)
{
gedit_spinner_unload_images (spinner);
spinner->priv->size = size;
gtk_widget_queue_resize (GTK_WIDGET (spinner));
}
}
#if 0
/*
* gedit_spinner_set_timeout:
* @spinner: a #GeditSpinner
* @timeout: time delay between updates to the spinner.
*
* Sets the timeout delay for spinner updates.
**/
void
gedit_spinner_set_timeout (GeditSpinner *spinner,
guint timeout)
{
GeditSpinnerPrivate *priv = spinner->priv;
if (timeout != priv->timeout)
{
gedit_spinner_stop (spinner);
priv->timeout = timeout;
if (priv->spinning)
{
gedit_spinner_start (spinner);
}
}
}
#endif
static void
gedit_spinner_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GeditSpinner *spinner = GEDIT_SPINNER (widget);
GeditSpinnerPrivate *priv = spinner->priv;
if ((priv->need_load &&
!gedit_spinner_load_images (spinner)) ||
priv->images == NULL)
{
requisition->width = requisition->height = 0;
gtk_icon_size_lookup_for_settings (gtk_widget_get_settings (widget),
priv->size,
&requisition->width,
&requisition->height);
return;
}
requisition->width = priv->images->width;
requisition->height = priv->images->height;
/* FIXME fix this hack */
/* allocate some extra margin so we don't butt up against toolbar edges */
if (priv->size != GTK_ICON_SIZE_MENU)
{
requisition->width += 2;
requisition->height += 2;
}
}
static void
gedit_spinner_map (GtkWidget *widget)
{
GeditSpinner *spinner = GEDIT_SPINNER (widget);
GeditSpinnerPrivate *priv = spinner->priv;
GTK_WIDGET_CLASS (parent_class)->map (widget);
if (priv->spinning)
{
gedit_spinner_start (spinner);
}
}
static void
gedit_spinner_unmap (GtkWidget *widget)
{
GeditSpinner *spinner = GEDIT_SPINNER (widget);
gedit_spinner_remove_update_callback (spinner);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static void
gedit_spinner_dispose (GObject *object)
{
GeditSpinner *spinner = GEDIT_SPINNER (object);
g_signal_handlers_disconnect_by_func
(spinner->priv->icon_theme,
G_CALLBACK (icon_theme_changed_cb), spinner);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gedit_spinner_finalize (GObject *object)
{
GeditSpinner *spinner = GEDIT_SPINNER (object);
gedit_spinner_remove_update_callback (spinner);
gedit_spinner_unload_images (spinner);
g_object_unref (spinner->priv->cache);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gedit_spinner_screen_changed (GtkWidget *widget,
GdkScreen *old_screen)
{
GeditSpinner *spinner = GEDIT_SPINNER (widget);
GeditSpinnerPrivate *priv = spinner->priv;
GdkScreen *screen;
if (GTK_WIDGET_CLASS (parent_class)->screen_changed)
{
GTK_WIDGET_CLASS (parent_class)->screen_changed (widget, old_screen);
}
screen = gtk_widget_get_screen (widget);
/* FIXME: this seems to be happening when then spinner is destroyed!? */
if (old_screen == screen)
return;
/* We'll get mapped again on the new screen, but not unmapped from
* the old screen, so remove timeout here.
*/
gedit_spinner_remove_update_callback (spinner);
gedit_spinner_unload_images (spinner);
if (old_screen != NULL)
{
g_signal_handlers_disconnect_by_func
(gtk_icon_theme_get_for_screen (old_screen),
G_CALLBACK (icon_theme_changed_cb), spinner);
}
priv->icon_theme = gtk_icon_theme_get_for_screen (screen);
g_signal_connect (priv->icon_theme, "changed",
G_CALLBACK (icon_theme_changed_cb), spinner);
}
static void
gedit_spinner_class_init (GeditSpinnerClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
parent_class = g_type_class_peek_parent (class);
object_class->dispose = gedit_spinner_dispose;
object_class->finalize = gedit_spinner_finalize;
widget_class->expose_event = gedit_spinner_expose;
widget_class->size_request = gedit_spinner_size_request;
widget_class->map = gedit_spinner_map;
widget_class->unmap = gedit_spinner_unmap;
widget_class->screen_changed = gedit_spinner_screen_changed;
g_type_class_add_private (object_class, sizeof (GeditSpinnerPrivate));
}
/*
* gedit_spinner_new:
*
* Create a new #GeditSpinner. The spinner is a widget
* that gives the user feedback about network status with
* an animated image.
*
* Return Value: the spinner #GtkWidget
**/
GtkWidget *
gedit_spinner_new (void)
{
return GTK_WIDGET (g_object_new (GEDIT_TYPE_SPINNER, NULL));
}
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