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PDF Output: Fix a regression that broke conversion of comics that contain 1-bit images

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Kovid Goyal 2021-09-26 21:49:01 +05:30
parent 5bf68b5971
commit 36631868f5
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1 changed files with 2 additions and 3 deletions
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src/calibre/ebooks/pdf/render/serialize.py
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@ -301,6 +301,7 @@ class PDFStream(object):
i = QImage(1, 1, QImage.Format.Format_ARGB32)
i.fill(qRgba(0, 0, 0, 255))
self.alpha_bit = i.constBits().asstring(4).find(b'\xff')
self.bw_image_color_table = frozenset((QColor(Qt.GlobalColor.black).rgba(), QColor(Qt.GlobalColor.white).rgba()))
@property
def page_tree(self):
@ -426,9 +427,7 @@ class PDFStream(object):
fmt = img.format()
image = QImage(img)
if (image.depth() == 1 and img.colorTable().size() == 2 and
img.colorTable().at(0) == QColor(Qt.GlobalColor.black).rgba() and
img.colorTable().at(1) == QColor(Qt.GlobalColor.white).rgba()):
if image.depth() == 1 and frozenset(img.colorTable()) == self.bw_image_color_table:
if fmt == QImage.Format.Format_MonoLSB:
image = image.convertToFormat(QImage.Format.Format_Mono)
fmt = QImage.Format.Format_Mono