def main():
args = get_args()
draw = Drawing()
draw.font = args.font_file
draw.font_size = args.font_size
font_name = args.font_name
out_dir = args.out_dir
img_ref = Image(width=1000, height=1000)
if args.verbose:
print "Writing " + out_dir + "/" + font_name + ".c"
f = open(out_dir + "/" + font_name + ".c", 'wb+')
write_comment(f)
f.write("#include \"font.h\"\n\n")
font_height = 0
range_first = 0x20
range_last = 0x7d
font_width = []
max_width = 0
for x in range(range_first, range_last + 1):
letter = chr(x)
metrics = draw.get_font_metrics(img_ref, letter)
text_height = int(round(metrics.text_height + 2))
if font_height == 0:
font_height = text_height
assert (font_height == text_height), "font height changed!"
if max_width == 0:
max_width = metrics.maximum_horizontal_advance + 2
assert (max_width == metrics.maximum_horizontal_advance + 2), \
"font advance width changed!"
text_width = int(round(metrics.text_width + 2))
font_width.append(text_width)
img = Image(width=text_width, height=text_height)
d = draw.clone()
d.text(0, int(metrics.ascender), letter)
d(img)
img.depth = 1
f.write("static const unsigned char ")
f.write("letter_" + str(hex(x)[2:]) + "[] = {\n")
c_hex_print(f, img.make_blob(format='A'))
f.write("};\n\n")
img.close()
f.write("static const struct font_letter letters[] = {\n")
for x in range(range_first, range_last + 1):
letter_var_name = "letter_" + str(hex(x)[2:])
f.write("\t{ " + letter_var_name + ", ")
f.write("sizeof(" + letter_var_name + "), ")
f.write(str(font_width[x - range_first]) + "},\n")
f.write("};\n\n")
f.write("const struct font font_" + font_name + " = {\n")
f.write("\t.first = " + str(hex(range_first)) + ",\n")
f.write("\t.last = " + str(hex(range_last)) + ",\n")
f.write("\t.letters = letters,\n")
f.write("\t.height = " + str(font_height) + ",\n")
f.write("\t.max_width = " + str(max_width) + ",\n")
f.write("};\n")
f.close()
if args.verbose:
print "Writing " + out_dir + "/" + font_name + ".h"
f = open(out_dir + "/" + font_name + ".h", 'wb+')
write_comment(f)
f.write("#ifndef __" + font_name.upper() + "_H\n")
f.write("#define __" + font_name.upper() + "_H\n")
f.write("#include \"font.h\"\n")
f.write("extern const struct font font_" + font_name + ";\n")
f.write("#endif /*__" + font_name.upper() + "_H*/\n")
f.close()
def main():
args = get_args()
draw = Drawing()
draw.font = args.font_file
draw.font_size = args.font_size
font_name = args.font_name
out_dir = args.out_dir
img_ref = Image(width=1000, height=1000)
if args.verbose:
print "Writing " + out_dir + "/" + font_name + ".c"
f = open(out_dir + "/" + font_name + ".c", 'wb+')
write_comment(f)
f.write("#include \"font.h\"\n\n")
font_height = 0
range_first = 0x20
range_last = 0x7d
font_width = []
max_width = 0
for x in range(range_first, range_last + 1):
letter = chr(x)
metrics = draw.get_font_metrics(img_ref, letter)
text_height = int(round(metrics.text_height + 2))
if font_height == 0:
font_height = text_height
assert (font_height == text_height), "font height changed!"
if max_width == 0:
max_width = metrics.maximum_horizontal_advance + 2
assert (max_width == metrics.maximum_horizontal_advance + 2), \
"font advance width changed!"
text_width = int(round(metrics.text_width + 2))
font_width.append(text_width)
img = Image(width=text_width, height=text_height)
d = draw.clone()
d.text(0, int(metrics.ascender), letter)
d(img)
img.depth = 1;
f.write("static const unsigned char ")
f.write("letter_" + str(hex(x)[2:]) + "[] = {\n")
c_hex_print(f, img.make_blob(format='A'))
f.write("};\n\n")
img.close()
f.write("static const struct font_letter letters[] = {\n")
for x in range(range_first, range_last + 1):
letter_var_name = "letter_" + str(hex(x)[2:])
f.write("\t{ " + letter_var_name + ", ")
f.write("sizeof(" + letter_var_name + "), ")
f.write(str(font_width[x - range_first]) + "},\n")
f.write("};\n\n")
f.write("const struct font font_" + font_name + " = {\n")
f.write("\t.first = " + str(hex(range_first)) + ",\n")
f.write("\t.last = " + str(hex(range_last)) + ",\n")
f.write("\t.letters = letters,\n")
f.write("\t.height = " + str(font_height) + ",\n")
f.write("\t.max_width = " + str(max_width) + ",\n")
f.write("};\n")
f.close()
if args.verbose:
print "Writing " + out_dir + "/" + font_name + ".h"
f = open(out_dir + "/" + font_name + ".h", 'wb+')
write_comment(f)
f.write("#ifndef __" + font_name.upper() + "_H\n");
f.write("#define __" + font_name.upper() + "_H\n");
f.write("#include \"font.h\"\n")
f.write("extern const struct font font_" + font_name + ";\n")
f.write("#endif /*__" + font_name.upper() + "_H*/\n");
f.close()
class CenteredParagraph(PropCache):
def __init__(self, text, font, font_size=15, center=(0,0), spacing=4, line_height=None, antialias=True, metrics=None, full_init=True, **kwargs):
super().__init__(**kwargs)
self.text= text
split= self.text.split("\n")
self.num_lines= len(split)
if line_height is None:
self.line_height= 3*font_size/4 + spacing # assume 72(?) dpi
self.spacing= spacing
else:
self.line_height= line_height
self.spacing= line_height - 3*font_size/4
self.draw= None
if full_init:
self.draw= Drawing()
self.draw.font= font
self.draw.font_size= font_size
self.draw.text_antialias= antialias
# leave this at end of init
self.lines= []
self.lines= self._get_lines(split, center, metrics=metrics)
def invalidate(self):
for x in ["bbox", "center"]:
try:
delattr(self, x)
except AttributeError:
pass
# attr= getattr(self, x, None)
# if attr is not None:
# delattr(self, x)
def copy(self, deepcopy=False):
ret= self.__class__(
text=self.text, center=self.bbox.center, spacing=self.spacing,
font="", metrics=[x.metrics for x in self.lines],
full_init=deepcopy
)
if deepcopy:
ret.draw= self.draw.clone()
else:
ret.draw= self.draw
return ret
def render(self, image, as_numpy=False):
d= self.draw.clone()
for l in self.lines:
pos= l.bbox.pos
d.text(int(pos[0]), int(pos[1]), l.text)
d(image)
if as_numpy:
image= np.array(image)[:,:,:3]
return image
def _get_lines(self, lst, center, metrics=None):
# create lines
ret= []
for i,x in enumerate(lst):
m= None
if isinstance(metrics, list):
m= metrics[i]
ret.append(CenteredLine(x, self, para_center=center, metrics=m, linked=[self]))
# adjust position
total_height= self.num_lines * self.line_height
current_height= 0
for i,l in enumerate(ret):
if i == 0:
topmost_height= l.bbox.height
current_height+= l.bbox.height
total_height-= (self.line_height - topmost_height) # exclude whitespace for topmost line
else:
current_height+= self.line_height
ypos= current_height + center[1]
ypos-= total_height/2 # centering
l.bbox.pos= (None, ypos)
# clean up
for x in ret:
x.linked.append(self)
return ret
def shift(self, x=0, y=0):
if x != 0 or y != 0:
c= list(self.bbox.center)
c= [c[0]+x if x else None,
c[1]+y if y else None]
self.bbox.center= tuple(c)
return self
# todo: test recache
@cached_property
def bbox(self):
# if not self.lines:
# return Bbox(0,0,0,0, linked=[self])
x= min(x.bbox.pos[0] for x in self.lines)
y= max(x.bbox.pos[1] for x in self.lines)
w= max(x.bbox.size[0] for x in self.lines)
h= (self.num_lines-1) * self.line_height # height of all lines except top
h+= self.lines[0].bbox.height # height of top-most line
return Bbox(x=x, y=y, w=w, h=h, linked_bbox=[x.bbox for x in self.lines], linked=[self])
@cached_property
def center(self):
return self.bbox.center
def __str__(self):
t= self.text.replace("\n","\\n")
return f'"{t}" | {self.bbox}'
def debug(self):
t= self.text.replace("\n","\\n")
ret= f'"{t}" | line_height={self.line_height} | spacing={self.spacing} | {self.bbox}'
ret+= "\n\t" + "\n\t".join(str(x) for x in self.lines)
return ret
