def animation_length(self):
ani_pal_lengths = [
self.dpla.get_frame_count_for_palette(x) for x in (0, 1)
if self.dpla.has_for_palette(x)
]
if len(ani_pal_lengths) < 1:
return 0
if len(ani_pal_lengths) < 2:
len_pal_ani = ani_pal_lengths[0]
else:
len_pal_ani = lcm(*ani_pal_lengths)
return len_pal_ani
def _init_chunk_imgs(self):
"""(Re)-draw the chunk images"""
self.chunks_surfaces = []
# For each chunk...
for chunk_idx in range(0, len(self.dpc.chunks)):
# For each frame of palette animation... ( applicable for this chunk )
pal_ani_frames = []
self.chunks_surfaces.append(pal_ani_frames)
chunk_data = self.dpc.chunks[chunk_idx]
chunk_image = self.dpc.single_chunk_to_pil(chunk_idx, self.dpci,
self.dpl.palettes)
has_pal_ani = any(chunk.pal_idx >= 10
and self.dpla.has_for_palette(chunk.pal_idx - 10)
for chunk in chunk_data)
if not has_pal_ani:
len_pal_ani = 1
else:
ani_pal_lengths = [
self.dpla.get_frame_count_for_palette(x) for x in (0, 1)
if self.dpla.has_for_palette(x)
]
if len(ani_pal_lengths) < 2:
len_pal_ani = ani_pal_lengths[0]
else:
len_pal_ani = lcm(*ani_pal_lengths)
for pal_ani in range(0, len_pal_ani):
# We don't have animated tiles, so ani_frames just has one entry.
ani_frames = []
pal_ani_frames.append(ani_frames)
# Switch out the palette with that from the palette animation
if has_pal_ani:
pal_for_frame = itertools.chain.from_iterable(
self.dpla.apply_palette_animations(
self.dpl.palettes, pal_ani))
chunk_image.putpalette(pal_for_frame)
ani_frames.append(
pil_to_cairo_surface(chunk_image.convert('RGBA')))
# TODO: No DPLA animations at different speeds supported at the moment
ani_pal11 = 9999
ani_pal12 = 9999
if self.dpla.has_for_palette(0):
ani_pal11 = self.dpla.get_duration_for_palette(0)
if self.dpla.has_for_palette(1):
ani_pal12 = self.dpla.get_duration_for_palette(1)
self.pal_ani_durations = min(ani_pal11, ani_pal12)