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Code Issues Releases Wiki Activity

shift click label spreads for HQ preview (#1427)

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This commit is contained in:
Alex Xu
2026-08-26 13:05:14 -07:00
committed by GitHub
parent c8cf50da0a
commit adac558aab
3 changed files with 25 additions and 11 deletions
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gui/KCC.ui
+3
View File
@@ -779,6 +779,9 @@ Keeping this file may crash some readers like the Kobo native CBZ reader.</strin
<height>30</height>
</size>
</property>
<property name="toolTip">
<string>Hold shift while clicking for a higher quality preview.</string>
</property>
<property name="text">
<string>Label Spreads</string>
</property>
kindlecomicconverter/KCC_gui.py
+19 -11
View File
@@ -671,6 +671,9 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
GUI.jobList.scrollToBottom()
def labelSpreadsStart(self):
low_quality_preview = True
if QApplication.keyboardModifiers() == Qt.ShiftModifier:
low_quality_preview = False
currentJobs = []
# TODO: make this a function since it's copy pasted
for i in range(GUI.jobList.count()):
@@ -704,29 +707,34 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
continue
# TODO: with statements
# TODO: ignore 1% of top and bottom too?
im1 = Image.open(os.path.join(root, files[i])).convert('1', dither=Dither.NONE)
im1 = Image.open(os.path.join(root, files[i]))
size1 = im1.size
crop1 = im1.crop((0, 0, 0.2*size1[0], size1[1]))
crop11 = im1.crop((0.01*size1[0], 0, 0.04*size1[0], size1[1]))
preview_crop1 = im1.crop((0, 0, 0.2*size1[0], size1[1]))
if low_quality_preview:
preview_crop1 = preview_crop1.convert('1', dither=Dither.NONE)
calculation_crop1 = im1.crop((0.01*size1[0], 0, 0.04*size1[0], size1[1])).convert('1', dither=Dither.NONE)
#crop1 = crop11
im2 = Image.open(os.path.join(root, files[i+1])).convert('1', dither=Dither.NONE)
im2 = Image.open(os.path.join(root, files[i+1]))
size2 = im2.size
crop2 = im2.crop((0.8*size2[0], 0, size2[0], size2[1]))
crop22 = im2.crop((0.96*size2[0], 0, .99* size2[0], size2[1]))
preview_crop2 = im2.crop((0.8*size2[0], 0, size2[0], size2[1]))
if low_quality_preview:
preview_crop2 = preview_crop2.convert('1', dither=Dither.NONE)
calculation_crop2 = im2.crop((0.96*size2[0], 0, .99* size2[0], size2[1])).convert('1', dither=Dither.NONE)
#crop2 = crop22
# dst = Image.new('1', (im1.width + im2.width, im1.height))
# dst.paste(im2, (0, 0))
# dst.paste(im1, (im1.width, 0))
hist1 = crop11.histogram()
hist2 = crop22.histogram()
hist1 = calculation_crop1.histogram()
hist2 = calculation_crop2.histogram()
# TODO: small percentage instead of zero
if hist1[0] == 0 or hist1[-1] == 0 or hist2[0] == 0 or hist2[-1] == 0:
continue
dst = Image.new('1', (crop1.width + crop2.width, crop1.height))
preview_mode = '1' if low_quality_preview else 'RGB'
dst = Image.new(preview_mode, (preview_crop1.width + preview_crop2.width, preview_crop1.height))
dst.paste(crop2, (0, 0))
dst.paste(crop1, (crop1.width, 0))
dst.paste(preview_crop2, (0, 0))
dst.paste(preview_crop1, (preview_crop1.width, 0))
dst.save(os.path.join(workdir, f'label-{i:04}.png'))
images.append(os.path.join(workdir, f'label-{i:04}.png'))
kindlecomicconverter/KCC_ui.py
+3
View File
@@ -860,6 +860,9 @@ class Ui_mainWindow(object):
self.editorButton.setText(QCoreApplication.translate("mainWindow", u"Metadata Editor", None))
self.humbleButton.setText(QCoreApplication.translate("mainWindow", u"Humble Bundle Referral", None))
self.kofiButton.setText(QCoreApplication.translate("mainWindow", u"Support me on Ko-fi", None))
#if QT_CONFIG(tooltip)
self.labelSpreadsButton.setToolTip(QCoreApplication.translate("mainWindow", u"Hold shift while clicking for a higher quality preview.", None))
#endif // QT_CONFIG(tooltip)
self.labelSpreadsButton.setText(QCoreApplication.translate("mainWindow", u"Label Spreads", None))
#if QT_CONFIG(tooltip)
self.chunkSizeWidget.setToolTip(QCoreApplication.translate("mainWindow", u"<html><head/><body><p>Warning: chunk size greater than default may cause<br/>performance/battery issues, especially on older devices.</p></body></html>", None))