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class FBConsole:
def __init__(self, framebuf, bgcolor=0, fgcolor=-1, width=-1, height=-1):
self.fb = framebuf
if width > 0:
self.width=width
else:
try:
self.width=framebuf.width
except:
raise ValueError
if height > 0:
self.height=height
else:
try:
self.height=framebuf.height
except:
raise ValueError
self.bgcolor = bgcolor
self.fgcolor = fgcolor
self.line_height(8)
def cls(self):
self.x = 0
self.y = 0
self.fb.fill(self.bgcolor)
try:
self.fb.show()
except:
pass
def line_height(self, px):
self.lineheight = px
self.w = self.width // px
self.h = self.height // px
self.cls()
def _putc(self, c):
c = chr(c)
if c == '\n':
self.x = 0
self._newline()
elif c == '\x08':
self._backspace()
elif c >= ' ':
self.fb.text(c, self.x * 8, self.y * 8, self.fgcolor)
self.x += 1
if self.x >= self.w:
self._newline()
self.x = 0
def write(self, buf):
i = 0
while i < len(buf):
c = buf[i]
if c == 0x1b: # skip escape sequence
i += 1
while chr(buf[i]) in '[;0123456789':
i += 1
else:
self._putc(c)
i += 1
try:
self.fb.show()
except:
pass
def readinto(self, buf, nbytes=0):
return None
def _newline(self):
self.y += 1
if self.y >= self.h:
self.fb.scroll(0, -8)
self.fb.fill_rect(0, self.height - 8, self.width, 8, 0)
self.y = self.h - 1
def _erase_current(self):
self.fb.fill_rect(self.x * 8, self.y * 8, 8, 8, 0)
def _backspace(self):
if self.x == 0:
if self.y > 0:
self.y -= 1
self.x = self.w - 1
else:
self.x -= 1
self.fb.fill_rect(self.x * 8, self.y * 8, 8, 8, 0)
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