diff -r 34043d9fcdf9 -r f4714f1de6d0 pidgin/pidgingdkpixbuf.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pidgin/pidgingdkpixbuf.c	Tue Apr 23 16:03:41 2019 -0500
@@ -0,0 +1,152 @@
+/* pidgin
+ *
+ * Pidgin is the legal property of its developers, whose names are too numerous
+ * to list here.  Please refer to the COPYRIGHT file distributed with this
+ * source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
+ */
+
+#include "pidgin/pidgingdkpixbuf.h"
+
+GdkPixbuf *
+pidgin_gdk_pixbuf_new_from_image(PurpleImage *image, GError **error) {
+	GdkPixbufLoader *loader = NULL;
+	GdkPixbuf *pixbuf = NULL;
+	GBytes *data = NULL;
+	gboolean success = FALSE;
+
+	g_return_val_if_fail(PURPLE_IS_IMAGE(image), NULL);
+
+	data = purple_image_get_contents(image);
+	success = gdk_pixbuf_loader_write_bytes(loader, data, error);
+	g_bytes_unref(data);
+
+	if(success) {
+		if(error != NULL && *error != NULL) {
+			g_object_unref(G_OBJECT(loader));
+
+			return NULL;
+		}
+
+		if(gdk_pixbuf_loader_close(loader, error)) {
+			pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
+			if(pixbuf != NULL) {
+				pixbuf = g_object_ref(pixbuf);
+			}
+		}
+
+		g_object_unref(G_OBJECT(loader));
+	}
+
+	return pixbuf;
+}
+
+void pidgin_gdk_pixbuf_make_round(GdkPixbuf *pixbuf) {
+	gint width, height, rowstride;
+	guchar *pixels;
+
+	if (!gdk_pixbuf_get_has_alpha(pixbuf)) {
+		return;
+	}
+
+	width = gdk_pixbuf_get_width(pixbuf);
+	height = gdk_pixbuf_get_height(pixbuf);
+	rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+	pixels = gdk_pixbuf_get_pixels(pixbuf);
+
+	if (width < 6 || height < 6)
+		return;
+
+	/* The following code will conver the alpha of the pixel data in all
+	 * corners to look something like the following diagram.
+	 *
+	 * 00 80 c0 FF FF c0 80 00
+	 * 80 FF FF FF FF FF FF 80
+	 * c0 FF FF FF FF FF FF c0
+	 * FF FF FF FF FF FF FF FF
+	 * FF FF FF FF FF FF FF FF
+	 * c0 FF FF FF FF FF FF c0
+	 * 80 FF FF FF FF FF FF 80
+	 * 00 80 c0 FF FF c0 80 00
+	 */
+
+	/* Top left */
+	pixels[3] = 0;
+	pixels[7] = 0x80;
+	pixels[11] = 0xC0;
+	pixels[rowstride + 3] = 0x80;
+	pixels[rowstride * 2 + 3] = 0xC0;
+
+	/* Top right */
+	pixels[width * 4 - 1] = 0;
+	pixels[width * 4 - 5] = 0x80;
+	pixels[width * 4 - 9] = 0xC0;
+	pixels[rowstride + (width * 4) - 1] = 0x80;
+	pixels[(2 * rowstride) + (width * 4) - 1] = 0xC0;
+
+	/* Bottom left */
+	pixels[(height - 1) * rowstride + 3] = 0;
+	pixels[(height - 1) * rowstride + 7] = 0x80;
+	pixels[(height - 1) * rowstride + 11] = 0xC0;
+	pixels[(height - 2) * rowstride + 3] = 0x80;
+	pixels[(height - 3) * rowstride + 3] = 0xC0;
+
+	/* Bottom right */
+	pixels[height * rowstride - 1] = 0;
+	pixels[(height - 1) * rowstride - 1] = 0x80;
+	pixels[(height - 2) * rowstride - 1] = 0xC0;
+	pixels[height * rowstride - 5] = 0x80;
+	pixels[height * rowstride - 9] = 0xC0;
+}
+
+gboolean
+pidgin_gdk_pixbuf_is_opaque(GdkPixbuf *pixbuf) {
+	gint height, rowstride, i;
+	guchar *pixels;
+	guchar *row;
+
+	if (!gdk_pixbuf_get_has_alpha(pixbuf))
+		return TRUE;
+
+	height = gdk_pixbuf_get_height (pixbuf);
+	rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+	pixels = gdk_pixbuf_get_pixels (pixbuf);
+
+	/* check the top row */
+	row = pixels;
+	for (i = 3; i < rowstride; i+=4) {
+		if (row[i] < 0xfe)
+			return FALSE;
+	}
+
+	/* check the left and right sides */
+	for (i = 1; i < height - 1; i++) {
+		row = pixels + (i * rowstride);
+		if (row[3] < 0xfe || row[rowstride - 1] < 0xfe) {
+			return FALSE;
+	    }
+	}
+
+	/* check the bottom */
+	row = pixels + ((height - 1) * rowstride);
+	for (i = 3; i < rowstride; i += 4) {
+		if (row[i] < 0xfe)
+			return FALSE;
+	}
+
+	return TRUE;
+}
+