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elementary: reduce possibility of reading thumbnail in the middle of its generation. 

SVN revision: 59005
This commit is contained in:
Cedric BAIL 2011-04-28 14:04:00 +00:00
parent 53d904d493
commit 833b17ee4c
1 changed files with 119 additions and 15 deletions
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134
legacy/elementary/src/lib/elm_thumb.c
View File

@ -36,7 +36,12 @@ struct _Widget_Data
const char *file;
const char *key;
#ifdef HAVE_ELEMENTARY_ETHUMB
const char *thumb_path;
const char *thumb_key;
Ethumb_Exists *exists;
Ecore_Idle_Enterer *idler;
Ethumb_Thumb_Format format;
#endif
} thumb;
Ecore_Event_Handler *eeh;
@ -98,6 +103,14 @@ _del_hook(Evas_Object *obj)
ethumb_client_thumb_exists_cancel(wd->thumb.exists);
wd->thumb.exists = NULL;
}
if (wd->thumb.idler)
{
ecore_idle_enterer_del(wd->thumb.idler);
wd->thumb.idler = NULL;
}
eina_stringshare_del(wd->thumb.thumb_path);
eina_stringshare_del(wd->thumb.thumb_key);
#endif
eina_stringshare_del(wd->file);
@ -150,13 +163,87 @@ _mouse_up_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *
wd->on_hold = EINA_FALSE;
}
static void
_finished_thumb(Widget_Data *wd, const char *thumb_path, const char *thumb_key)
/* As we do use stat to check if a thumbnail is available, it's possible
that we end up accessing before the file is completly written on disk.
By using an idler enterer, I hope to wait enought before trying accessing
it again.
*/
static Eina_Bool
_retry_thumb(void *data)
{
Eina_Bool new_view = EINA_FALSE;
int r;
Widget_Data *wd = data;
Evas_Coord mw, mh;
int r;
wd->thumb.idler = NULL;
if ((wd->is_video) && (wd->thumb.format == ETHUMB_THUMB_EET))
{
if (!edje_object_file_set(wd->view,
wd->thumb.thumb_path,
"movie/thumb"))
{
ERR("could not set file=%s key=%s for %s",
wd->thumb.thumb_path,
wd->thumb.thumb_key,
wd->file);
goto view_err;
}
}
else
{
evas_object_image_file_set(wd->view,
wd->thumb.thumb_path,
wd->thumb.thumb_key);
r = evas_object_image_load_error_get(wd->view);
if (r != EVAS_LOAD_ERROR_NONE)
{
ERR("%s: %s", wd->thumb.thumb_path, evas_load_error_str(r));
goto view_err;
}
}
edje_object_part_swallow(wd->frame, "elm.swallow.content", wd->view);
edje_object_size_min_get(wd->frame, &mw, &mh);
edje_object_size_min_restricted_calc(wd->frame, &mw, &mh, mw, mh);
evas_object_size_hint_min_set(wd->self, mw, mh);
eina_stringshare_replace(&(wd->thumb.file), wd->thumb.thumb_path);
eina_stringshare_replace(&(wd->thumb.key), wd->thumb.thumb_key);
edje_object_signal_emit(wd->frame, EDJE_SIGNAL_GENERATE_STOP, "elm");
evas_object_smart_callback_call(wd->self, SIG_GENERATE_STOP, NULL);
eina_stringshare_del(wd->thumb.thumb_path);
wd->thumb.thumb_path = NULL;
eina_stringshare_del(wd->thumb.thumb_key);
wd->thumb.thumb_key = NULL;
return ECORE_CALLBACK_CANCEL;
view_err:
eina_stringshare_del(wd->thumb.thumb_path);
wd->thumb.thumb_path = NULL;
eina_stringshare_del(wd->thumb.thumb_key);
wd->thumb.thumb_key = NULL;
evas_object_del(wd->view);
wd->view = NULL;
edje_object_signal_emit(wd->frame, EDJE_SIGNAL_LOAD_ERROR, "elm");
evas_object_smart_callback_call(wd->self, SIG_LOAD_ERROR, NULL);
return ECORE_CALLBACK_CANCEL;
}
static void
_finished_thumb(Widget_Data *wd,
const char *thumb_path,
const char *thumb_key)
{
Evas *evas;
Evas_Coord mw, mh;
int r;
evas = evas_object_evas_get(wd->self);
if ((wd->view) && (wd->is_video ^ wd->was_video))
@ -177,14 +264,16 @@ _finished_thumb(Widget_Data *wd, const char *thumb_path, const char *thumb_key)
ERR("could not create edje object");
goto err;
}
new_view = EINA_TRUE;
elm_widget_sub_object_add(wd->self, wd->view);
}
if (!edje_object_file_set(wd->view, thumb_path, "movie/thumb"))
{
ERR("could not set file=%s key=%s for %s", thumb_path, thumb_key,
wd->file);
goto view_err;
wd->thumb.thumb_path = eina_stringshare_ref(thumb_path);
wd->thumb.thumb_key = eina_stringshare_ref(thumb_key);
wd->thumb.format = ethumb_client_format_get(_elm_ethumb_client);
wd->thumb.idler = ecore_idle_enterer_add(_retry_thumb, wd);
return ;
}
}
else
@ -197,19 +286,22 @@ _finished_thumb(Widget_Data *wd, const char *thumb_path, const char *thumb_key)
ERR("could not create image object");
goto err;
}
new_view = EINA_TRUE;
elm_widget_sub_object_add(wd->self, wd->view);
}
evas_object_image_file_set(wd->view, thumb_path, thumb_key);
r = evas_object_image_load_error_get(wd->view);
if (r != EVAS_LOAD_ERROR_NONE)
{
ERR("%s: %s", thumb_path, evas_load_error_str(r));
goto view_err;
WRN("%s: %s", thumb_path, evas_load_error_str(r));
wd->thumb.thumb_path = eina_stringshare_ref(thumb_path);
wd->thumb.thumb_key = eina_stringshare_ref(thumb_key);
wd->thumb.format = ethumb_client_format_get(_elm_ethumb_client);
wd->thumb.idler = ecore_idle_enterer_add(_retry_thumb, wd);
return ;
}
}
if (new_view) elm_widget_sub_object_add(wd->self, wd->view);
edje_object_part_swallow(wd->frame, "elm.swallow.content", wd->view);
edje_object_size_min_get(wd->frame, &mw, &mh);
edje_object_size_min_restricted_calc(wd->frame, &mw, &mh, mw, mh);
@ -220,9 +312,6 @@ _finished_thumb(Widget_Data *wd, const char *thumb_path, const char *thumb_key)
evas_object_smart_callback_call(wd->self, SIG_GENERATE_STOP, NULL);
return;
view_err:
evas_object_del(wd->view);
wd->view = NULL;
err:
edje_object_signal_emit(wd->frame, EDJE_SIGNAL_LOAD_ERROR, "elm");
evas_object_smart_callback_call(wd->self, SIG_LOAD_ERROR, NULL);
@ -302,6 +391,12 @@ _thumb_apply(Widget_Data *wd)
wd->thumb.exists = NULL;
}
if (wd->thumb.idler)
{
ecore_idle_enterer_del(wd->thumb.idler);
wd->thumb.idler = NULL;
}
if (!wd->file) return;
ethumb_client_file_set(_elm_ethumb_client, wd->file, wd->key);
@ -362,6 +457,12 @@ _thumb_hide_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void
wd->thumb.exists = NULL;
}
if (wd->thumb.idler)
{
ecore_idle_enterer_del(wd->thumb.idler);
wd->thumb.idler = NULL;
}
if (wd->eeh)
{
ecore_event_handler_del(wd->eeh);
@ -487,7 +588,10 @@ elm_thumb_add(Evas_Object *parent)
wd->was_video = EINA_FALSE;
#ifdef HAVE_ELEMENTARY_ETHUMB
wd->thumb.thumb_path = NULL;
wd->thumb.thumb_key = NULL;
wd->thumb.exists = NULL;
wd->thumb.idler = NULL;
evas_object_event_callback_add(obj, EVAS_CALLBACK_MOUSE_DOWN,
_mouse_down_cb, wd);
evas_object_event_callback_add(obj, EVAS_CALLBACK_MOUSE_UP,