/**
* gs_screenshot_image_load_async:
**/
void
gs_screenshot_image_load_async (GsScreenshotImage *ssimg,
GCancellable *cancellable)
{
AsImage *im = NULL;
GsScreenshotImagePrivate *priv;
SoupURI *base_uri = NULL;
const gchar *url;
gint rc;
_cleanup_free_ gchar *basename = NULL;
_cleanup_free_ gchar *cachedir2 = NULL;
_cleanup_free_ gchar *cachedir = NULL;
_cleanup_free_ gchar *sizedir = NULL;
g_return_if_fail (GS_IS_SCREENSHOT_IMAGE (ssimg));
priv = gs_screenshot_image_get_instance_private (ssimg);
g_return_if_fail (AS_IS_SCREENSHOT (priv->screenshot));
g_return_if_fail (priv->width != 0);
g_return_if_fail (priv->height != 0);
/* load an image according to the scale factor */
priv->scale = gtk_widget_get_scale_factor (GTK_WIDGET (ssimg));
im = as_screenshot_get_image (priv->screenshot,
priv->width * priv->scale,
priv->height * priv->scale);
/* if we've failed to load a HiDPI image, fallback to LoDPI */
if (im == NULL && priv->scale > 1) {
priv->scale = 1;
im = as_screenshot_get_image (priv->screenshot,
priv->width,
priv->height);
}
if (im == NULL) {
/* TRANSLATORS: this is when we request a screenshot size that
* the generator did not create or the parser did not add */
gs_screenshot_image_set_error (ssimg, _("Screenshot size not found"));
return;
}
url = as_image_get_url (im);
basename = g_path_get_basename (url);
if (priv->width == G_MAXUINT || priv->height == G_MAXUINT) {
sizedir = g_strdup ("unknown");
} else {
sizedir = g_strdup_printf ("%ux%u", priv->width * priv->scale, priv->height * priv->scale);
}
cachedir = g_build_filename (priv->cachedir,
"gnome-software",
"screenshots",
sizedir,
NULL);
rc = g_mkdir_with_parents (cachedir, 0700);
if (rc != 0) {
/* TRANSLATORS: this is when we try create the cache directory
* but we were out of space or permission was denied */
gs_screenshot_image_set_error (ssimg, _("Could not create cache"));
return;
}
/* does local file already exist */
priv->filename = g_build_filename (cachedir, basename, NULL);
if (g_file_test (priv->filename, G_FILE_TEST_EXISTS)) {
as_screenshot_show_image (ssimg);
return;
}
/* can we load a blurred smaller version of this straight away */
if (priv->width > AS_IMAGE_THUMBNAIL_WIDTH &&
priv->height > AS_IMAGE_THUMBNAIL_HEIGHT) {
cachedir2 = g_build_filename (priv->cachedir,
"gnome-software",
"screenshots",
"112x63",
basename,
NULL);
if (g_file_test (cachedir2, G_FILE_TEST_EXISTS))
gs_screenshot_image_show_blurred (ssimg, cachedir2);
}
/* download file */
g_debug ("downloading %s to %s", url, priv->filename);
base_uri = soup_uri_new (url);
if (base_uri == NULL || !SOUP_URI_VALID_FOR_HTTP (base_uri)) {
/* TRANSLATORS: this is when we try to download a screenshot
* that was not a valid URL */
gs_screenshot_image_set_error (ssimg, _("Screenshot not valid"));
soup_uri_free (base_uri);
return;
}
/* cancel any previous messages */
if (priv->message != NULL) {
soup_session_cancel_message (priv->session,
priv->message,
SOUP_STATUS_CANCELLED);
g_clear_object (&priv->message);
}
priv->message = soup_message_new_from_uri (SOUP_METHOD_GET, base_uri);
if (priv->message == NULL) {
/* TRANSLATORS: this is when networking is not available */
gs_screenshot_image_set_error (ssimg, _("Screenshot not available"));
soup_uri_free (base_uri);
return;
}
/* send async */
soup_session_queue_message (priv->session,
g_object_ref (priv->message) /* transfer full */,
gs_screenshot_image_complete_cb,
g_object_ref (ssimg));
soup_uri_free (base_uri);
}
void
gs_screenshot_image_load_async (GsScreenshotImage *ssimg,
GCancellable *cancellable)
{
AsImage *im = NULL;
const gchar *url;
g_autofree gchar *basename = NULL;
g_autofree gchar *cache_kind = NULL;
g_autofree gchar *cachefn_thumb = NULL;
g_autofree gchar *sizedir = NULL;
g_autoptr(SoupURI) base_uri = NULL;
g_return_if_fail (GS_IS_SCREENSHOT_IMAGE (ssimg));
g_return_if_fail (AS_IS_SCREENSHOT (ssimg->screenshot));
g_return_if_fail (ssimg->width != 0);
g_return_if_fail (ssimg->height != 0);
/* load an image according to the scale factor */
ssimg->scale = (guint) gtk_widget_get_scale_factor (GTK_WIDGET (ssimg));
im = as_screenshot_get_image (ssimg->screenshot,
ssimg->width * ssimg->scale,
ssimg->height * ssimg->scale);
/* if we've failed to load a HiDPI image, fallback to LoDPI */
if (im == NULL && ssimg->scale > 1) {
ssimg->scale = 1;
im = as_screenshot_get_image (ssimg->screenshot,
ssimg->width,
ssimg->height);
}
if (im == NULL) {
/* TRANSLATORS: this is when we request a screenshot size that
* the generator did not create or the parser did not add */
gs_screenshot_image_set_error (ssimg, _("Screenshot size not found"));
return;
}
/* check if the URL points to a local file */
url = as_image_get_url (im);
if (g_str_has_prefix (url, "file://")) {
g_free (ssimg->filename);
ssimg->filename = g_strdup (url + 7);
if (g_file_test (ssimg->filename, G_FILE_TEST_EXISTS)) {
as_screenshot_show_image (ssimg);
return;
}
}
basename = gs_screenshot_get_cachefn_for_url (url);
if (ssimg->width == G_MAXUINT || ssimg->height == G_MAXUINT) {
sizedir = g_strdup ("unknown");
} else {
sizedir = g_strdup_printf ("%ux%u", ssimg->width * ssimg->scale, ssimg->height * ssimg->scale);
}
cache_kind = g_build_filename ("screenshots", sizedir, NULL);
g_free (ssimg->filename);
ssimg->filename = gs_utils_get_cache_filename (cache_kind,
basename,
GS_UTILS_CACHE_FLAG_NONE,
NULL);
if (ssimg->filename == NULL) {
/* TRANSLATORS: this is when we try create the cache directory
* but we were out of space or permission was denied */
gs_screenshot_image_set_error (ssimg, _("Could not create cache"));
return;
}
/* does local file already exist and has recently been downloaded */
if (g_file_test (ssimg->filename, G_FILE_TEST_EXISTS)) {
guint64 age_max;
g_autoptr(GFile) file = NULL;
/* show the image we have in cache while we're checking for the
* new screenshot (which probably won't have changed) */
as_screenshot_show_image (ssimg);
/* verify the cache age against the maximum allowed */
age_max = g_settings_get_uint (ssimg->settings,
"screenshot-cache-age-maximum");
file = g_file_new_for_path (ssimg->filename);
/* image new enough, not re-requesting from server */
if (age_max > 0 && gs_utils_get_file_age (file) < age_max)
return;
}
/* if we're not showing a full-size image, we try loading a blurred
* smaller version of it straight away */
if (!ssimg->showing_image &&
ssimg->width > AS_IMAGE_THUMBNAIL_WIDTH &&
ssimg->height > AS_IMAGE_THUMBNAIL_HEIGHT) {
const gchar *url_thumb;
g_autofree gchar *basename_thumb = NULL;
g_autofree gchar *cache_kind_thumb = NULL;
im = as_screenshot_get_image (ssimg->screenshot,
AS_IMAGE_THUMBNAIL_WIDTH * ssimg->scale,
AS_IMAGE_THUMBNAIL_HEIGHT * ssimg->scale);
url_thumb = as_image_get_url (im);
basename_thumb = gs_screenshot_get_cachefn_for_url (url_thumb);
cache_kind_thumb = g_build_filename ("screenshots", "112x63", NULL);
cachefn_thumb = gs_utils_get_cache_filename (cache_kind_thumb,
basename_thumb,
GS_UTILS_CACHE_FLAG_NONE,
NULL);
if (cachefn_thumb == NULL)
return;
if (g_file_test (cachefn_thumb, G_FILE_TEST_EXISTS))
gs_screenshot_image_show_blurred (ssimg, cachefn_thumb);
}
/* re-request the cache filename, which might be different as it needs
* to be writable this time */
g_free (ssimg->filename);
ssimg->filename = gs_utils_get_cache_filename (cache_kind,
basename,
GS_UTILS_CACHE_FLAG_WRITEABLE,
NULL);
/* download file */
g_debug ("downloading %s to %s", url, ssimg->filename);
base_uri = soup_uri_new (url);
if (base_uri == NULL || !SOUP_URI_VALID_FOR_HTTP (base_uri)) {
/* TRANSLATORS: this is when we try to download a screenshot
* that was not a valid URL */
gs_screenshot_image_set_error (ssimg, _("Screenshot not valid"));
return;
}
/* cancel any previous messages */
if (ssimg->message != NULL) {
soup_session_cancel_message (ssimg->session,
ssimg->message,
SOUP_STATUS_CANCELLED);
g_clear_object (&ssimg->message);
}
ssimg->message = soup_message_new_from_uri (SOUP_METHOD_GET, base_uri);
if (ssimg->message == NULL) {
/* TRANSLATORS: this is when networking is not available */
gs_screenshot_image_set_error (ssimg, _("Screenshot not available"));
return;
}
/* not all servers support If-Modified-Since, but worst case we just
* re-download the entire file again every 30 days */
if (g_file_test (ssimg->filename, G_FILE_TEST_EXISTS)) {
g_autoptr(GFile) file = g_file_new_for_path (ssimg->filename);
gs_screenshot_soup_msg_set_modified_request (ssimg->message, file);
}
/* send async */
soup_session_queue_message (ssimg->session,
g_object_ref (ssimg->message) /* transfer full */,
gs_screenshot_image_complete_cb,
g_object_ref (ssimg));
}
/**
* gs_screenshot_image_complete_cb:
**/
static void
gs_screenshot_image_complete_cb (SoupSession *session,
SoupMessage *msg,
gpointer user_data)
{
_cleanup_object_unref_ GsScreenshotImage *ssimg = GS_SCREENSHOT_IMAGE (user_data);
GsScreenshotImagePrivate *priv = gs_screenshot_image_get_instance_private (ssimg);
gboolean ret;
_cleanup_error_free_ GError *error = NULL;
_cleanup_object_unref_ AsImage *im = NULL;
_cleanup_object_unref_ GdkPixbuf *pixbuf = NULL;
_cleanup_object_unref_ GInputStream *stream = NULL;
/* return immediately if the message was cancelled or if we're in destruction */
if (msg->status_code == SOUP_STATUS_CANCELLED || priv->session == NULL)
return;
if (msg->status_code != SOUP_STATUS_OK) {
/* TRANSLATORS: this is when we try to download a screenshot and
* we get back 404 */
gs_screenshot_image_set_error (ssimg, _("Screenshot not found"));
gtk_widget_hide (GTK_WIDGET (ssimg));
return;
}
/* create a buffer with the data */
stream = g_memory_input_stream_new_from_data (msg->response_body->data,
msg->response_body->length,
NULL);
if (stream == NULL)
return;
/* load the image */
pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, NULL);
if (pixbuf == NULL) {
/* TRANSLATORS: possibly image file corrupt or not an image */
gs_screenshot_image_set_error (ssimg, _("Failed to load image"));
return;
}
/* is image size destination size unknown or exactly the correct size */
if (priv->width == G_MAXUINT || priv->height == G_MAXUINT ||
(priv->width * priv->scale == (guint) gdk_pixbuf_get_width (pixbuf) &&
priv->height * priv->scale == (guint) gdk_pixbuf_get_height (pixbuf))) {
ret = g_file_set_contents (priv->filename,
msg->response_body->data,
msg->response_body->length,
&error);
if (!ret) {
gs_screenshot_image_set_error (ssimg, error->message);
return;
}
} else {
/* save to file, using the same code as the AppStream builder
* so the preview looks the same */
im = as_image_new ();
as_image_set_pixbuf (im, pixbuf);
ret = as_image_save_filename (im, priv->filename,
priv->width * priv->scale,
priv->height * priv->scale,
AS_IMAGE_SAVE_FLAG_PAD_16_9, &error);
if (!ret) {
gs_screenshot_image_set_error (ssimg, error->message);
return;
}
}
/* got image, so show */
as_screenshot_show_image (ssimg);
}
static void
gs_screenshot_image_complete_cb (SoupSession *session,
SoupMessage *msg,
gpointer user_data)
{
g_autoptr(GsScreenshotImage) ssimg = GS_SCREENSHOT_IMAGE (user_data);
gboolean ret;
g_autoptr(GError) error = NULL;
g_autoptr(GdkPixbuf) pixbuf = NULL;
g_autoptr(GInputStream) stream = NULL;
/* return immediately if the message was cancelled or if we're in destruction */
if (msg->status_code == SOUP_STATUS_CANCELLED || ssimg->session == NULL)
return;
if (msg->status_code == SOUP_STATUS_NOT_MODIFIED) {
g_debug ("screenshot has not been modified");
as_screenshot_show_image (ssimg);
return;
}
if (msg->status_code != SOUP_STATUS_OK) {
g_warning ("Result of screenshot downloading attempt with "
"status code '%u': %s", msg->status_code,
msg->reason_phrase);
/* if we're already showing an image, then don't set the error
* as having an image (even if outdated) is better */
if (ssimg->showing_image)
return;
/* TRANSLATORS: this is when we try to download a screenshot and
* we get back 404 */
gs_screenshot_image_set_error (ssimg, _("Screenshot not found"));
return;
}
/* create a buffer with the data */
stream = g_memory_input_stream_new_from_data (msg->response_body->data,
msg->response_body->length,
NULL);
if (stream == NULL)
return;
/* load the image */
pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, NULL);
if (pixbuf == NULL) {
/* TRANSLATORS: possibly image file corrupt or not an image */
gs_screenshot_image_set_error (ssimg, _("Failed to load image"));
return;
}
/* is image size destination size unknown or exactly the correct size */
if (ssimg->width == G_MAXUINT || ssimg->height == G_MAXUINT ||
(ssimg->width * ssimg->scale == (guint) gdk_pixbuf_get_width (pixbuf) &&
ssimg->height * ssimg->scale == (guint) gdk_pixbuf_get_height (pixbuf))) {
ret = g_file_set_contents (ssimg->filename,
msg->response_body->data,
msg->response_body->length,
&error);
if (!ret) {
gs_screenshot_image_set_error (ssimg, error->message);
return;
}
} else if (!gs_screenshot_image_save_downloaded_img (ssimg, pixbuf,
&error)) {
gs_screenshot_image_set_error (ssimg, error->message);
return;
}
/* got image, so show */
as_screenshot_show_image (ssimg);
}
