static gboolean qr_avatar_render_hook(gpointer source, gpointer data)
{
AvatarRender *ar = (AvatarRender *)source;
GtkWidget *image = NULL;
gchar * text;
QRcode *qrcode;
unsigned char * qrdata;
GdkPixbuf *pixbuf, *pixbuf_scaled;
int i, j, k, rowstride, channels;
guchar *pixel;
debug_print("qr-avatar qr_avatar_render_hook() invoked\n");
if ((text = procmsg_msginfo_get_avatar(ar->full_msginfo, QR_AVATAR_QR_AVATAR)) != NULL) {
if ((qrcode = QRcode_encodeString8bit(text, 0, QR_ECLEVEL_L)) == NULL)
return FALSE;
qrdata = qrcode->data;
pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8,
qrcode->width, qrcode->width);
pixel = gdk_pixbuf_get_pixels(pixbuf);
rowstride = gdk_pixbuf_get_rowstride(pixbuf);
channels = gdk_pixbuf_get_n_channels(pixbuf);
gdk_pixbuf_fill(pixbuf, 0xffffffff);
for (i = 0; i < qrcode->width; i++)
for (j = 0; j < qrcode->width; j++) {
for (k = 0; k < channels; k++)
pixel[i * rowstride + j * channels + k] = !(*qrdata & 0x1) * 0xff;
qrdata++;
}
/* claws-mail is limited to avatar with 48x48 pixels
* TODO: skip scaling as soon as different sizes are supported */
pixbuf_scaled = gdk_pixbuf_scale_simple(pixbuf, QR_AVATAR_SIZE, QR_AVATAR_SIZE, GDK_INTERP_BILINEAR);
QRcode_free(qrcode);
g_object_unref(pixbuf);
image = gtk_image_new_from_pixbuf(pixbuf_scaled);
g_object_unref(pixbuf_scaled);
if (ar->image != NULL) /* previous plugin set one */
gtk_widget_destroy(ar->image);
ar->image = image;
return TRUE;
}
return FALSE; /* keep rendering */
}
static gboolean libravatar_image_render_hook(gpointer source, gpointer data)
{
AvatarRender *ar = (AvatarRender *)source;
GtkWidget *image = NULL;
gchar *a = NULL, *url = NULL;
gchar md5sum[33];
debug_print("libravatar avatar_image_render invoked\n");
a = procmsg_msginfo_get_avatar(ar->full_msginfo, AVATAR_LIBRAVATAR);
if (a != NULL) {
gchar *base;
md5_hex_digest(md5sum, a);
/* try missing cache */
if (is_missing_md5(libravatarmisses, md5sum)) {
return FALSE;
}
/* try disk cache */
image = image_widget_from_cached_md5(md5sum);
if (image != NULL) {
if (ar->image) /* previous plugin set one */
gtk_widget_destroy(ar->image);
ar->image = image;
ar->type = AVATAR_LIBRAVATAR;
return FALSE;
}
/* not cached copy: try network */
if (prefs_common_get_prefs()->work_offline) {
debug_print("working off-line: libravatar network retrieval skipped\n");
return FALSE;
}
base = federated_base_url_from_address(a);
url = libravatar_url_for_md5(base, md5sum);
if (url != NULL) {
image = image_widget_from_url(url, md5sum);
g_free(url);
if (image != NULL) {
if (ar->image) /* previous plugin set one */
gtk_widget_destroy(ar->image);
ar->image = image;
ar->type = AVATAR_LIBRAVATAR;
}
}
g_free(base);
return TRUE;
}
return FALSE; /* keep rendering */
}
