forked from 0ad/0ad
207 lines
7.6 KiB
Python
207 lines
7.6 KiB
Python
import cairo
|
|
import codecs
|
|
import math
|
|
|
|
import FontLoader
|
|
import Packer
|
|
|
|
# Representation of a rendered glyph
|
|
class Glyph(object):
|
|
def __init__(self, ctx, renderstyle, char, idx):
|
|
self.renderstyle = renderstyle
|
|
self.char = char
|
|
self.idx = idx
|
|
self.glyph = (idx, 0, 0)
|
|
|
|
extents = ctx.glyph_extents([self.glyph])
|
|
|
|
self.xadvance = round(extents[4])
|
|
|
|
# Find the bounding box of strokes and/or fills:
|
|
|
|
inf = 1e300 * 1e300
|
|
bb = [inf, inf, -inf, -inf]
|
|
|
|
if "stroke" in self.renderstyle:
|
|
for (c, w) in self.renderstyle["stroke"]:
|
|
ctx.set_line_width(w)
|
|
ctx.glyph_path([self.glyph])
|
|
e = ctx.stroke_extents()
|
|
bb = (min(bb[0], e[0]), min(bb[1], e[1]), max(bb[2], e[2]), max(bb[3], e[3]))
|
|
ctx.new_path()
|
|
|
|
if "fill" in self.renderstyle:
|
|
ctx.glyph_path([self.glyph])
|
|
e = ctx.fill_extents()
|
|
bb = (min(bb[0], e[0]), min(bb[1], e[1]), max(bb[2], e[2]), max(bb[3], e[3]))
|
|
ctx.new_path()
|
|
|
|
bb = (math.floor(bb[0]), math.floor(bb[1]), math.ceil(bb[2]), math.ceil(bb[3]))
|
|
|
|
self.x0 = -bb[0]
|
|
self.y0 = -bb[1]
|
|
self.w = bb[2] - bb[0]
|
|
self.h = bb[3] - bb[1]
|
|
|
|
# Force multiple of 4, to avoid leakage across S3TC blocks
|
|
# (TODO: is this useful?)
|
|
#self.w += (4 - (self.w % 4)) % 4
|
|
#self.h += (4 - (self.h % 4)) % 4
|
|
|
|
def pack(self, packer):
|
|
self.pos = packer.Pack(self.w, self.h)
|
|
|
|
def render(self, ctx):
|
|
ctx.save()
|
|
ctx.translate(self.x0, self.y0)
|
|
ctx.translate(self.pos.x, self.pos.y)
|
|
|
|
# Render each stroke, and then each fill on top of it
|
|
|
|
if "stroke" in self.renderstyle:
|
|
for ((r, g, b, a), w) in self.renderstyle["stroke"]:
|
|
ctx.set_line_width(w)
|
|
ctx.set_source_rgba(r, g, b, a)
|
|
ctx.glyph_path([self.glyph])
|
|
ctx.stroke()
|
|
|
|
if "fill" in self.renderstyle:
|
|
for (r, g, b, a) in self.renderstyle["fill"]:
|
|
ctx.set_source_rgba(r, g, b, a)
|
|
ctx.glyph_path([self.glyph])
|
|
ctx.fill()
|
|
|
|
ctx.restore()
|
|
|
|
# Load the set of characters contained in the given text file
|
|
def load_char_list(filename):
|
|
f = codecs.open(filename, "r", "utf-8")
|
|
chars = f.read()
|
|
f.close()
|
|
return set(chars)
|
|
|
|
# Construct a Cairo context and surface for rendering text with the given parameters
|
|
def setup_context(width, height, face, size, renderstyle):
|
|
format = (cairo.FORMAT_ARGB32 if "colour" in renderstyle else cairo.FORMAT_A8)
|
|
surface = cairo.ImageSurface(format, width, height)
|
|
ctx = cairo.Context(surface)
|
|
ctx.set_font_face(face)
|
|
ctx.set_font_size(size)
|
|
ctx.set_line_join(cairo.LINE_JOIN_ROUND)
|
|
return ctx, surface
|
|
|
|
def generate_font(chars, outname, ttf, loadopts, size, renderstyle):
|
|
|
|
(face, indexes) = FontLoader.create_cairo_font_face_for_file(ttf, 0, loadopts)
|
|
|
|
(ctx, _) = setup_context(1, 1, face, size, renderstyle)
|
|
|
|
(ascent, descent, linespacing, _, _) = ctx.font_extents()
|
|
|
|
# Estimate the 'average' height of text, for vertical center alignment
|
|
charheight = round(ctx.glyph_extents([(indexes("I"), 0.0, 0.0)])[3])
|
|
|
|
# Translate all the characters into glyphs
|
|
# (This is inefficient if multiple characters have the same glyph)
|
|
glyphs = []
|
|
for c in chars:
|
|
idx = indexes(c)
|
|
if ord(c) == 0xFFFD and idx == 0: # use "?" if the missing-glyph glyph is missing
|
|
idx = indexes("?")
|
|
if idx:
|
|
glyphs.append(Glyph(ctx, renderstyle, c, idx))
|
|
|
|
# Sort by decreasing height (tie-break on decreasing width)
|
|
glyphs.sort(key = lambda g: (-g.h, -g.w))
|
|
|
|
# Try various sizes to pack the glyphs into
|
|
sizes = []
|
|
for h in [32, 64, 128, 256, 512, 1024]:
|
|
for w in [32, 64, 128, 256, 512, 1024]:
|
|
sizes.append((w, h))
|
|
sizes.sort(key = lambda (w, h): (w*h, max(w, h))) # prefer smaller and squarer
|
|
|
|
for w, h in sizes:
|
|
try:
|
|
#packer = Packer.DumbRectanglePacker(w, h)
|
|
packer = Packer.CygonRectanglePacker(w, h)
|
|
for g in glyphs:
|
|
g.pack(packer)
|
|
except Packer.OutOfSpaceError:
|
|
continue
|
|
|
|
ctx, surface = setup_context(w, h, face, size, renderstyle)
|
|
for g in glyphs:
|
|
g.render(ctx)
|
|
surface.write_to_png("%s.png" % outname)
|
|
|
|
# Output the .fnt file with all the glyph positions etc
|
|
fnt = open("%s.fnt" % outname, "w")
|
|
fnt.write("101\n")
|
|
fnt.write("%d %d\n" % (w, h))
|
|
fnt.write("%s\n" % ("rgba" if "colour" in renderstyle else "a"))
|
|
fnt.write("%d\n" % len(glyphs))
|
|
fnt.write("%d\n" % linespacing)
|
|
fnt.write("%d\n" % charheight)
|
|
glyphs.sort(key = lambda g: ord(g.char))
|
|
for g in glyphs:
|
|
x0 = g.x0
|
|
y0 = g.y0
|
|
# UGLY HACK: see http://trac.wildfiregames.com/ticket/1039 ;
|
|
# to handle a-macron-acute characters without the hassle of
|
|
# doing proper OpenType GPOS layout (which the Pagella font
|
|
# doesn't support anyway), we'll just shift the combining acute
|
|
# glyph by an arbitrary amount to make it roughly the right
|
|
# place when used after an a-macron glyph.
|
|
if ord(g.char) == 0x0301:
|
|
y0 += charheight/3
|
|
|
|
fnt.write("%d %d %d %d %d %d %d %d\n" % (ord(g.char), g.pos.x, h-g.pos.y, g.w, g.h, -x0, y0, g.xadvance))
|
|
|
|
fnt.close()
|
|
|
|
return
|
|
print "Failed to fit glyphs in texture"
|
|
|
|
filled = { "fill": [(1, 1, 1, 1)] }
|
|
stroked1 = { "colour": True, "stroke": [((0, 0, 0, 1), 2.0), ((0, 0, 0, 1), 2.0)], "fill": [(1, 1, 1, 1)] }
|
|
stroked2 = { "colour": True, "stroke": [((0, 0, 0, 1), 2.0)], "fill": [(1, 1, 1, 1), (1, 1, 1, 1)] }
|
|
stroked3 = { "colour": True, "stroke": [((0, 0, 0, 1), 2.5)], "fill": [(1, 1, 1, 1), (1, 1, 1, 1)] }
|
|
|
|
chars = load_char_list("charset.txt")
|
|
|
|
DejaVuSansMono = ("DejaVuSansMono.ttf", FontLoader.FT_LOAD_DEFAULT)
|
|
DejaVuSans = ("DejaVuSans.ttf", FontLoader.FT_LOAD_DEFAULT)
|
|
PagellaRegular = ("texgyrepagella-regular.otf", FontLoader.FT_LOAD_NO_HINTING)
|
|
PagellaBold = ("texgyrepagella-bold.otf", FontLoader.FT_LOAD_NO_HINTING)
|
|
|
|
fonts = (
|
|
("mono-10", DejaVuSansMono, 10, filled),
|
|
("mono-stroke-10", DejaVuSansMono, 10, stroked2),
|
|
("sans-10", DejaVuSans, 10, filled),
|
|
("serif-9", PagellaRegular, 9, filled),
|
|
("serif-12", PagellaRegular, 12, filled),
|
|
("serif-13", PagellaRegular, 13, filled),
|
|
("serif-14", PagellaRegular, 14, filled),
|
|
("serif-16", PagellaRegular, 16, filled),
|
|
("serif-bold-12", PagellaBold, 12, filled),
|
|
("serif-bold-13", PagellaBold, 13, filled),
|
|
("serif-bold-14", PagellaBold, 14, filled),
|
|
("serif-bold-16", PagellaBold, 16, filled),
|
|
("serif-bold-18", PagellaBold, 18, filled),
|
|
("serif-bold-20", PagellaBold, 20, filled),
|
|
("serif-bold-22", PagellaBold, 22, filled),
|
|
("serif-bold-24", PagellaBold, 24, filled),
|
|
("serif-stroke-12", PagellaRegular, 12, stroked2),
|
|
("serif-bold-stroke-12", PagellaBold, 12, stroked3),
|
|
("serif-stroke-13", PagellaRegular, 13, stroked2),
|
|
("serif-bold-stroke-13", PagellaBold, 13, stroked3),
|
|
("serif-stroke-14", PagellaRegular, 14, stroked2),
|
|
("serif-bold-stroke-14", PagellaBold, 14, stroked3),
|
|
("serif-stroke-16", PagellaRegular, 16, stroked2),
|
|
)
|
|
|
|
for (name, (fontname, loadopts), size, style) in fonts:
|
|
print "%s..." % name
|
|
generate_font(chars, "../../../binaries/data/mods/public/fonts/%s" % name, "../../../binaries/data/tools/fontbuilder/fonts/%s" % fontname, loadopts, size, style)
|