def draw_line(self, window_line_buf, window, y, block_x):
if y >= self.height:
return
if self._tiled:
width = min(self._width, window.width - block_x)
else:
width = min(self._bitmap_width, self._width,
window.width - block_x)
start = self._current * self._bitmap_width * self._bitmap_height \
+ self._bitmap_width * (y % self._bitmap_height)
cx = start
for x in range(start, start + width):
index = self._data[cx]
col = block_x + x - start
if self._mask_color is None:
color = self.get_color(index)
if 0 <= col < window.width and color != self._transparent_color:
window_line_buf[col] = color
else:
color = self.get_color(self._mask_color)
intensity = index
if 0 <= col < window.width and intensity > 0:
window_line_buf[col] = ImageUtil.blend_pixel(
window_line_buf[col], color, intensity)
cx = cx + 1
if cx - start >= self._bitmap_width:
cx = start
def merge_line(self, dst_buf, src_buf, src_buf_offset, src_alpha):
"""
blending源buffer到目的buffer中
"""
assert (src_buf_offset + len(src_buf) < self._width)
for x in range(src_buf_offset, src_buf_offset + len(src_buf)):
dst_buf[x] = ImageUtil.blend_pixel(dst_buf[x],
src_buf[x - src_buf_offset],
src_alpha)
def draw_line(self, line_buf, window, y, block_x):
assert (0 <= y < self._height)
color = self.color(window, self._color)
width = min(self._width, window.width - block_x)
for x in range(self._pitch * y, self._pitch * y + width):
index = self._data[x]
if index == 0:
continue
col = block_x + x - self._width * y
line_buf[col] = ImageUtil.blend_pixel(line_buf[col], color,
index / 255)
def draw_line(self, window_line_buf, window, y, block_x):
top = self.top_line()
color = self.get_color(self._color)
left = block_x
for glyph in self._glyphs:
col = left + glyph.left
left += glyph.advance_x
if not 0 <= y - glyph.top + top < glyph.height:
continue
offset = (y - glyph.top + top) * glyph.pitch
for x in range(glyph.width):
if glyph.monochrome:
bit = glyph.data[offset + (x >> 3)]
bit = bit & (128 >> (x & 7))
if 0 <= col < window.width and bit > 0:
window_line_buf[col] = color
else:
intensity = glyph.data[offset + x]
if 0 <= col < window.width and intensity > 0:
window_line_buf[col] = ImageUtil.blend_pixel(
window_line_buf[col], color, intensity)
col += 1