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At least: font code generator, exchange code support for color 128x128

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Max Regan
2019-08-04 15:35:44 -07:00
parent e0b49ba109
commit 77f09bca16
47 changed files with 899 additions and 16431 deletions
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16
gen/font.py
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@@ -70,12 +70,13 @@ class Bitmap(object):
class Glyph(object):
def __init__(self, pixels, width, height, top, advance_width):
def __init__(self, pixels, width, height, top, left, advance_width):
self.bitmap = Bitmap(width, height, pixels)
# The glyph bitmap's top-side bearing, i.e. the vertical distance from the
# baseline to the bitmap's top-most scanline.
self.top = top
self.left = left
# Ascent and descent determine how many pixels the glyph extends
# above or below the baseline.
@@ -100,13 +101,14 @@ class Glyph(object):
pixels = Glyph.unpack_mono_bitmap(slot.bitmap)
width, height = slot.bitmap.width, slot.bitmap.rows
top = slot.bitmap_top
left = slot.bitmap_left
# The advance width is given in FreeType's 26.6 fixed point format,
# which means that the pixel values are multiples of 64.
assert slot.advance.x % 64 == 0
advance_width = slot.advance.x // 64
return Glyph(pixels, width, height, top, advance_width)
return Glyph(pixels, width, height, top, left, advance_width)
@staticmethod
def unpack_mono_bitmap(bitmap):
@@ -151,12 +153,14 @@ class Glyph(object):
class FixedFont(object):
def __init__(self, filename, size):
def __init__(self, filename, width=0, height=0):
self.face = freetype.Face(filename)
self.face.set_pixel_sizes(0, size)
if not width and not height:
raise ValueError("Width or height must be set non-zero")
self.face.set_pixel_sizes(width, height)
if not self.face.is_fixed_width:
raise ValueError("Font is not fixed width")
# if not self.face.is_fixed_width:
# raise ValueError("Font is not fixed width")
self.face.load_char('A', freetype.FT_LOAD_RENDER | freetype.FT_LOAD_TARGET_MONO)
self.advance = self.face.glyph.advance.x // 64