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Defer parsing of palette into colors

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This commit is contained in:
Andrew Murray 2022-09-09 22:28:30 +10:00
parent d843759ca9
commit 2a7e603ae2
1 changed files with 16 additions and 7 deletions
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23
src/PIL/ImagePalette.py
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@ -50,15 +50,24 @@ class ImagePalette:
@palette.setter @palette.setter
def palette(self, palette): def palette(self, palette):
self._colors = None
self._palette = palette self._palette = palette
mode_len = len(self.mode) @property
self.colors = {} def colors(self):
for i in range(0, len(self.palette), mode_len): if self._colors is None:
color = tuple(self.palette[i : i + mode_len]) mode_len = len(self.mode)
if color in self.colors: self._colors = {}
continue for i in range(0, len(self.palette), mode_len):
self.colors[color] = i // mode_len color = tuple(self.palette[i : i + mode_len])
if color in self._colors:
continue
self._colors[color] = i // mode_len
return self._colors
@colors.setter
def colors(self, colors):
self._colors = colors
def copy(self): def copy(self):
new = ImagePalette() new = ImagePalette()