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Diffstat (limited to 'gedit/gedit-spinner.c')
| -rwxr-xr-x | gedit/gedit-spinner.c | 989 |
1 files changed, 989 insertions, 0 deletions
diff --git a/gedit/gedit-spinner.c b/gedit/gedit-spinner.c new file mode 100755 index 00000000..5cb74587 --- /dev/null +++ b/gedit/gedit-spinner.c @@ -0,0 +1,989 @@ +/* + * 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 <[email protected]> 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)); +} |