def load(self, filename):
"""Loads the font from a ``.dmd`` file (see :meth:`Animation.load`).
Fonts are stored in .dmd files with frame 0 containing the bitmap data
and frame 1 containing the character widths. 96 characters (32..127,
ASCII printables) are stored in a 10x10 grid, starting with space (``' '``)
in the upper left at 0, 0. The character widths are stored in the second frame
within the 'raw' bitmap data in bytes 0-95.
"""
self.__anim.load(filename)
if self.__anim.width != self.__anim.height:
raise ValueError, "Width != height!"
root, ext = os.path.splitext(filename)
metrics_filename = root + ".metrics.json"
self.metrics = None
left = 0
if os.path.exists(metrics_filename):
with open(metrics_filename) as fp:
self.metrics = json.load(fp)
left = self.metrics.get("left", 0)
self.top = self.metrics.get("top", 0)
self.margin_top = self.metrics.get("margin_top", 0)
self.bottom = self.metrics.get("bottom", 0)
elif len(self.__anim.frames) == 1:
# We allow 1 frame for handmade fonts.
# This is so that they can be loaded as a basic bitmap, have their char widths modified, and then be saved.
print "Font animation file %s has 1 frame; adding one" % (filename)
self.__anim.frames += [Frame(self.__anim.width, self.__anim.height)]
elif len(self.__anim.frames) != 2:
raise ValueError, "Expected 2 frames: %d" % (len(self.__anim.frames))
self.char_size = self.__anim.width / 10
self.bitmap = self.__anim.frames[0]
# FIXME: Create a separate bitmap for each possible color. This makes
# rendering fast, but could be improved
self.bitmaps = {}
self.bitmaps[0xf] = self.bitmap
for color in xrange(1, 0xf):
#print color
width = self.bitmap.width
height = self.bitmap.height
self.bitmaps[color] = Frame(width, height)
bitmap = self.bitmaps[color]
fill = Frame(width, height)
sub_color = 0xf - color
fill.fill_rect(0, 0, width, height, sub_color)
Frame.copy_rect(bitmap, 0, 0, self.bitmap, 0, 0, width, height)
Frame.copy_rect(bitmap, 0, 0, fill, 0, 0, width, height, "sub")
"""
for x in xrange(self.bitmap.width):
for y in xrange(self.bitmap.height):
dot = self.bitmap.get_dot(x, y) - (0xf - color)
if dot > 0:
self.bitmaps[color].set_dot(x, y, dot)
"""
self.char_widths = []
self.left = []
if not self.metrics:
for i in xrange(95):
self.char_widths += [self.__anim.frames[1].get_dot(i%self.__anim.width, i/self.__anim.width)]
self.left += [0]
else:
overrides = self.metrics.get("left_override", {})
for i in xrange(95):
self.char_widths += [self.metrics["widths"][i][1]]
ch = chr(ord(' ') + i)
self.left += [overrides.get(ch, left)]
return self
