1 files changed, 78 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/sample.py b/gfx/harfbuzz/src/sample.py
new file mode 100755
index 000000000..c2cb94d53
--- /dev/null
+++ b/gfx/harfbuzz/src/sample.py
@@ -0,0 +1,78 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+from __future__ import print_function
+import sys
+import array
+from gi.repository import HarfBuzz as hb
+from gi.repository import GLib
+
+# Python 2/3 compatibility
+try:
+	unicode
+except NameError:
+	unicode = str
+
+def tounicode(s, encoding='utf-8'):
+	if not isinstance(s, unicode):
+		return s.decode(encoding)
+	else:
+		return s
+
+fontdata = open (sys.argv[1], 'rb').read ()
+text = tounicode(sys.argv[2])
+# Need to create GLib.Bytes explicitly until this bug is fixed:
+# https://bugzilla.gnome.org/show_bug.cgi?id=729541
+blob = hb.glib_blob_create (GLib.Bytes.new (fontdata))
+face = hb.face_create (blob, 0)
+del blob
+font = hb.font_create (face)
+upem = hb.face_get_upem (face)
+del face
+hb.font_set_scale (font, upem, upem)
+#hb.ft_font_set_funcs (font)
+hb.ot_font_set_funcs (font)
+
+buf = hb.buffer_create ()
+class Debugger(object):
+	def message (self, buf, font, msg, data, _x_what_is_this):
+		print(msg)
+		return True
+debugger = Debugger()
+hb.buffer_set_message_func (buf, debugger.message, 1, 0)
+
+##
+## Add text to buffer
+##
+#
+# See https://github.com/behdad/harfbuzz/pull/271
+#
+if False:
+	# If you do not care about cluster values reflecting Python
+	# string indices, then this is quickest way to add text to
+	# buffer:
+	hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1)
+	# Otherwise, then following handles both narrow and wide
+	# Python builds:
+elif sys.maxunicode == 0x10FFFF:
+	hb.buffer_add_utf32 (buf, array.array('I', text.encode('utf-32')), 0, -1)
+else:
+	hb.buffer_add_utf16 (buf, array.array('H', text.encode('utf-16')), 0, -1)
+
+
+hb.buffer_guess_segment_properties (buf)
+
+hb.shape (font, buf, [])
+del font
+
+infos = hb.buffer_get_glyph_infos (buf)
+positions = hb.buffer_get_glyph_positions (buf)
+
+for info,pos in zip(infos, positions):
+	gid = info.codepoint
+	cluster = info.cluster
+	x_advance = pos.x_advance
+	x_offset = pos.x_offset
+	y_offset = pos.y_offset
+
+	print("gid%d=%d@%d,%d+%d" % (gid, cluster, x_advance, x_offset, y_offset))