HarfBuzz text shaping engine
http://harfbuzz.github.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
4.2 KiB
116 lines
4.2 KiB
#!/usr/bin/python |
|
|
|
import harfbuzz, optparse, sys |
|
from fontconfig import fcPattern |
|
|
|
usage = '''usage: %prog [options] codepoints |
|
Generates output of glyphs and positions. Each entry is of the form: |
|
glyphid>cluster@(offsetx,offsety)+(advancex,advancey) |
|
|
|
codepoints is a space separated list of hex values of Unicode codepoints''' |
|
p = optparse.OptionParser(usage=usage) |
|
p.add_option('-s', '--size', default=32, type="int", help="point size") |
|
p.add_option('-l', '--lang', help="language code") |
|
p.add_option('-c', '--script', help="script code") |
|
p.add_option('-F', '--feature', action='append', help="define a feature key=val") |
|
p.add_option('-f', '--font', help='Font to use to render glyphs. My be a font file', default="verdana") |
|
p.add_option('-b', '--bold', help='Choose bold fonts', action='store_true') |
|
p.add_option('-i', '--italic', help='Choose italic fonts', action='store_true') |
|
p.add_option('-d', '--debug', action='store_true', help="Output trace info") |
|
p.add_option('--nogui', action='store_true', help="Don't display a gui") |
|
(opts, args) = p.parse_args() |
|
|
|
if opts.font.lower().endswith(".ttf") : |
|
fpat = ":file=" |
|
else : |
|
fpat = "" |
|
fpat += opts.font + ":weight=" |
|
fpat += "bold" if opts.bold else "medium" |
|
fpat += ":slant=" |
|
fpat += "italic" if opts.italic else "roman" |
|
pat = fcPattern(fpat) |
|
fname = pat.getString("file", 0) |
|
family = pat.getString("family", 0) |
|
print "Processing: " + fname |
|
if opts.font.lower().endswith(".ttf") and opts.font != fname : |
|
print "Failed to find font in fontconfig. Exiting" |
|
sys.exit(1) |
|
|
|
ft = harfbuzz.ft(fname, opts.size) |
|
text = "".join(unichr(int(c, 16)) for c in args) |
|
bytes = text.encode('utf_8') |
|
buffer = harfbuzz.buffer(bytes, len(text)) |
|
if (opts.lang or opts.script) : buffer.set_scriptlang(opts.script if opts.script else "", opts.lang if opts.lang else "") |
|
features = {} |
|
if opts.feature : |
|
for f in opts.feature : |
|
k, v = f.split("=") |
|
features[k] = v |
|
ft.shape(buffer, features = features) |
|
res = buffer.get_info(64) # scale for 26.6 |
|
print res |
|
|
|
if not opts.nogui : |
|
try: |
|
import gtk |
|
import gobject |
|
import cairo |
|
from gtk import gdk |
|
except : |
|
raise SystemExit |
|
import pygtk |
|
|
|
if gtk.pygtk_version < (2, 8) : |
|
print "PyGtk 2.8 or later required" |
|
raise SystemExit |
|
|
|
class GlyphsWindow (gtk.Widget) : |
|
def __init__(self, fontname, bold, italic, size, glyphs) : |
|
gtk.Widget.__init__(self) |
|
self.fontname = fontname |
|
self.size = size |
|
self.glyphs = glyphs |
|
self.bold = bold |
|
self.italic = italic |
|
|
|
def do_realize(self) : |
|
self.set_flags(gtk.REALIZED) |
|
self.window = gdk.Window( |
|
self.get_parent_window(), |
|
width = self.allocation.width, |
|
height = self.allocation.height, |
|
window_type = gdk.WINDOW_CHILD, |
|
wclass = gdk.INPUT_OUTPUT, |
|
event_mask = self.get_events() | gdk.EXPOSURE_MASK) |
|
self.window.set_user_data(self) |
|
self.style.attach(self.window) |
|
self.style.set_background(self.window, gtk.STATE_NORMAL) |
|
self.window.move_resize(*self.allocation) |
|
|
|
def do_unrealize(self) : |
|
self.window.destroy() |
|
|
|
def do_expose_event(self, event) : |
|
cr = self.window.cairo_create() |
|
cr.set_matrix(cairo.Matrix(1, 0, 0, 1, 0, 1.5 * self.size)) |
|
cr.set_font_face(cairo.ToyFontFace(self.fontname, cairo.FONT_SLANT_ITALIC if self.italic else cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD if self.bold else cairo.FONT_WEIGHT_NORMAL)) |
|
cr.set_font_size(self.size) |
|
cr.show_glyphs(self.glyphs) # [(gid, originx, originy)] |
|
|
|
glyphs = [] |
|
org = [0, 0] |
|
for g in res : |
|
glyphs.append((g.gid, org[0] + g.offset[0], org[1] + g.offset[1])) |
|
org[0] += g.advance[0] |
|
org[1] += g.advance[1] |
|
|
|
gobject.type_register(GlyphsWindow) |
|
win = gtk.Window() |
|
win.resize(org[0] + 10, 2 * opts.size + 40) |
|
win.connect('delete-event', gtk.main_quit) |
|
frame = gtk.Frame("glyphs") |
|
win.add(frame) |
|
w = GlyphsWindow(family, opts.bold, opts.italic, opts.size, glyphs) |
|
frame.add(w) |
|
win.show_all() |
|
gtk.main()
|
|
|