Mercurial > hgrepos > Python2 > PyMuPDF
comparison mupdf-source/thirdparty/harfbuzz/src/sample.py @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
The directory name has changed: no version number in the expanded directory now.
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Mon, 15 Sep 2025 11:43:07 +0200 |
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| 1:1d09e1dec1d9 | 2:b50eed0cc0ef |
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| 1 #!/usr/bin/env python3 | |
| 2 | |
| 3 import sys | |
| 4 import array | |
| 5 import gi | |
| 6 gi.require_version('HarfBuzz', '0.0') | |
| 7 from gi.repository import HarfBuzz as hb | |
| 8 from gi.repository import GLib | |
| 9 | |
| 10 fontdata = open (sys.argv[1], 'rb').read () | |
| 11 text = sys.argv[2] | |
| 12 # Need to create GLib.Bytes explicitly until this bug is fixed: | |
| 13 # https://bugzilla.gnome.org/show_bug.cgi?id=729541 | |
| 14 blob = hb.glib_blob_create (GLib.Bytes.new (fontdata)) | |
| 15 face = hb.face_create (blob, 0) | |
| 16 del blob | |
| 17 font = hb.font_create (face) | |
| 18 upem = hb.face_get_upem (face) | |
| 19 del face | |
| 20 hb.font_set_scale (font, upem, upem) | |
| 21 #hb.ft_font_set_funcs (font) | |
| 22 hb.ot_font_set_funcs (font) | |
| 23 | |
| 24 buf = hb.buffer_create () | |
| 25 class Debugger (object): | |
| 26 def message (self, buf, font, msg, data, _x_what_is_this): | |
| 27 print (msg) | |
| 28 return True | |
| 29 debugger = Debugger () | |
| 30 hb.buffer_set_message_func (buf, debugger.message, 1, 0) | |
| 31 | |
| 32 ## | |
| 33 ## Add text to buffer | |
| 34 ## | |
| 35 # | |
| 36 # See https://github.com/harfbuzz/harfbuzz/pull/271 | |
| 37 # | |
| 38 # If you do not care about cluster values reflecting Python | |
| 39 # string indices, then this is quickest way to add text to | |
| 40 # buffer: | |
| 41 # hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1) | |
| 42 # Otherwise, then following handles both narrow and wide | |
| 43 # Python builds (the first item in the array is BOM, so we skip it): | |
| 44 if sys.maxunicode == 0x10FFFF: | |
| 45 hb.buffer_add_utf32 (buf, array.array ('I', text.encode ('utf-32'))[1:], 0, -1) | |
| 46 else: | |
| 47 hb.buffer_add_utf16 (buf, array.array ('H', text.encode ('utf-16'))[1:], 0, -1) | |
| 48 | |
| 49 | |
| 50 hb.buffer_guess_segment_properties (buf) | |
| 51 | |
| 52 hb.shape (font, buf, []) | |
| 53 del font | |
| 54 | |
| 55 infos = hb.buffer_get_glyph_infos (buf) | |
| 56 positions = hb.buffer_get_glyph_positions (buf) | |
| 57 | |
| 58 for info, pos in zip (infos, positions): | |
| 59 gid = info.codepoint | |
| 60 cluster = info.cluster | |
| 61 x_advance = pos.x_advance | |
| 62 x_offset = pos.x_offset | |
| 63 y_offset = pos.y_offset | |
| 64 | |
| 65 print ("gid%d=%d@%d,%d+%d" % (gid, cluster, x_advance, x_offset, y_offset)) |