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pull/7/head
Peter Hinch 2016-04-05 09:00:00 +01:00
rodzic c5e4fd8cb2
commit 2195996753
1 zmienionych plików z 6 dodań i 10 usunięć
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16
tft_fonts/TFTfont.py
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@ -8,31 +8,23 @@ class TFTFont(object):
self.bytes_vert = (self.bits_vert + 7) // 8 # Height in bytes self.bytes_vert = (self.bits_vert + 7) // 8 # Height in bytes
self.bytes_per_ch = self.bytes_vert * horiz # Total bytes per monospaced character self.bytes_per_ch = self.bytes_vert * horiz # Total bytes per monospaced character
self.monospaced = False self.monospaced = False
self.char = bytearray(self.bytes_per_ch)
self.mv = memoryview(self.char)
self._index = index self._index = index
self._font = font self._font = font
self._zero = bytearray(self.bytes_per_ch)
self._mvzero = memoryview(self._zero)
def get_idx(self, relch): def get_idx(self, relch):
offset = relch * 2 # index is 2 bytes/char offset = relch * 2 # index is 2 bytes/char
return self._index[offset] + (self._index[offset + 1] << 8) return self._index[offset] + (self._index[offset + 1] << 8)
def get_ch(self, ch): def get_ch(self, ch):
from uctypes import addrssof from uctypes import addressof
relch = ch - self.firstchar relch = ch - self.firstchar
if relch > self.nchars or relch < 0: if relch > self.nchars or relch < 0:
raise ValueError('Character value {:} is unsupported.'.format(ch)) raise ValueError('Character value {:} is unsupported.'.format(ch))
offset = self.get_idx(relch) offset = self.get_idx(relch)
delta = self.get_idx(relch + 1) - offset delta = self.get_idx(relch + 1) - offset
bv = self.bits_vert
mv = self.mv
if self.monospaced: if self.monospaced:
mv[: delta] = self._font[offset : offset + delta] return addressof(self._font) + offse, self.bits_vert, delta, self.bits_horiz
mv[delta : self.bytes_per_ch] = self._mvzero[delta : self.bytes_per_ch]
return addressof(self.char), self.bits_vert, delta, self.bits_horiz
else: else:
return addressof(self._font) + offset, self.bits_vert, delta, delta // self.bytes_vert return addressof(self._font) + offset, self.bits_vert, delta, delta // self.bytes_vert
@ -44,6 +36,10 @@ class TFTFont(object):
# dict allows access to multiple fonts in fonts file # dict allows access to multiple fonts in fonts file
def get_ch_test(self, ch): def get_ch_test(self, ch):
self.char = bytearray(self.bytes_per_ch)
self.mv = memoryview(self.char)
self._zero = bytearray(self.bytes_per_ch)
self._mvzero = memoryview(self._zero)
relch = ch - self.firstchar relch = ch - self.firstchar
if relch > self.nchars or relch < 0: if relch > self.nchars or relch < 0:
raise ValueError('Character value {:} is unsupported.'.format(ch)) raise ValueError('Character value {:} is unsupported.'.format(ch))