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draw565: rle2bit: Add support for palette overrides

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This allows some interesting manipulations of 2-bit images.
This commit is contained in:
Daniel Thompson 2020-05-23 13:44:33 +01:00
parent f56cf0e6d1
commit 57999226fd
1 changed files with 5 additions and 5 deletions
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wasp/draw565.py
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@ -130,7 +130,7 @@ class Draw565(object):
self._display.fill(bg, x, y, w, h) self._display.fill(bg, x, y, w, h)
@micropython.native @micropython.native
def blit(self, image, x, y): def blit(self, image, x, y, fg=0xffff, c1=0x4a69, c2=0x7bef):
"""Decode and draw an encoded image. """Decode and draw an encoded image.
:param image: Image data in either 1-bit RLE or 2-bit RLE formats. The :param image: Image data in either 1-bit RLE or 2-bit RLE formats. The
@ -140,10 +140,10 @@ class Draw565(object):
""" """
if len(image) == 3: if len(image) == 3:
# Legacy 1-bit image # Legacy 1-bit image
self.rleblit(image, (x, y)) self.rleblit(image, (x, y), fg)
else: #elif image[0] == 2: else: #elif image[0] == 2:
# 2-bit RLE image, (255x255, v1) # 2-bit RLE image, (255x255, v1)
self._rle2bit(image, x, y) self._rle2bit(image, x, y, fg, c1, c2)
@micropython.native @micropython.native
def rleblit(self, image, pos=(0, 0), fg=0xffff, bg=0): def rleblit(self, image, pos=(0, 0), fg=0xffff, bg=0):
@ -179,7 +179,7 @@ class Draw565(object):
color = bg color = bg
@micropython.native @micropython.native
def _rle2bit(self, image, x, y): def _rle2bit(self, image, x, y, fg, c1, c2):
"""Decode and draw a 2-bit RLE image.""" """Decode and draw a 2-bit RLE image."""
display = self._display display = self._display
quick_write = display.quick_write quick_write = display.quick_write
@ -193,7 +193,7 @@ class Draw565(object):
sx *= 2 sx *= 2
sy //= 2 sy //= 2
palette = array.array('H', (0, 0x4a69, 0x7bef, 0xffff)) palette = array.array('H', (0, c1, c2, fg))
next_color = 1 next_color = 1
rl = 0 rl = 0
buf = memoryview(display.linebuffer)[0:2*sx] buf = memoryview(display.linebuffer)[0:2*sx]