Show a verification QR code for an accounts own key

1 files changed, 50 insertions, 0 deletions

diff --git a/plugins/omemo/vapi/qrencode.vapi b/plugins/omemo/vapi/qrencode.vapi
new file mode 100644
index 00000000..54c201ab
--- /dev/null
+++ b/plugins/omemo/vapi/qrencode.vapi
@@ -0,0 +1,50 @@
+using Gdk;
+
+[CCode (cheader_filename = "qrencode.h")]
+namespace Qrencode {
+
+	[CCode (cname = "QRecLevel", cprefix = "QR_ECLEVEL_")]
+	public enum ECLevel {
+		L,
+		M,
+		Q,
+		H
+	}
+
+	[CCode (cname = "QRencodeMode", cprefix = "QR_MODE_")]
+	public enum EncodeMode {
+        NUL,
+		NUM,
+		AN,
+		[CCode (cname = "QR_MODE_8")]
+		EIGHT_BIT,
+		KANJI,
+		STRUCTURE,
+        ECI,
+        FNC1FIRST,
+        FNC1SECOND
+	}
+
+	[CCode (cname = "QRcode", free_function = "QRcode_free", has_type_id = false)]
+	[Compact]
+	public class QRcode {
+		private int version;
+		private int width;
+		[CCode (array_length = false)]
+		private uint8[] data;
+
+		[CCode (cname = "QRcode_encodeString")]
+		public QRcode (string str, int version = 0, ECLevel level = ECLevel.L, EncodeMode hint = EncodeMode.EIGHT_BIT, bool casesensitive = true);
+
+        public Pixbuf to_pixbuf() {
+            uint8[] bitmap = new uint8[3*width*width];
+            for (int i = 0; i < width*width; i++) {
+                uint8 color = (data[i] & 1) == 1 ? 0 : 255;
+                bitmap[i*3] = color;
+                bitmap[i*3+1] = color;
+                bitmap[i*3+2] = color;
+            }
+            return new Pixbuf.from_data(bitmap, Colorspace.RGB, false, 8, width, width, width*3);
+        }
+	}
+}