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Code Issues Releases Wiki Activity

smart cover crop is default on and implemented for all formats (#1295)

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This commit is contained in:
Alex Xu
2026-04-15 21:25:08 -07:00
committed by GitHub
parent 6f26bd5874
commit e7b7054b0e
6 changed files with 24 additions and 17 deletions
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2
README.md
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@@ -270,7 +270,7 @@ PROCESSING:
Crop empty sections. 0: Disabled 1: Horizontally 2: Both [Default=0]
--blackborders Disable autodetection and force black borders
--whiteborders Disable autodetection and force white borders
--smartcovercrop Attempt to crop main cover from wide image
--nosmartcovercrop Disable attempt to crop main cover from wide image
--coverfill Center-crop only the cover to fill target device screen
--forcecolor Don't convert images to grayscale
--forcepng Create PNG files instead JPEG for black and white images

6
gui/KCC.ui
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@@ -655,12 +655,12 @@ Higher values are larger and higher quality, and may resolve blank page issues.<
</widget>
</item>
<item row="11" column="1">
<widget class="QCheckBox" name="smartCoverCropBox">
<widget class="QCheckBox" name="noSmartCoverCropBox">
<property name="toolTip">
<string>Attempt to crop main cover from wide image.</string>
<string>Disable attempt to crop main cover from wide image.</string>
</property>
<property name="text">
<string>Smart Cover Crop</string>
<string>No Smart Cover Crop</string>
</property>
</widget>
</item>

6
kindlecomicconverter/KCC_gui.py
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@@ -331,8 +331,8 @@ class WorkerThread(QThread):
options.pdfextract = True
if GUI.pdfWidthBox.isChecked():
options.pdfwidth = True
if GUI.smartCoverCropBox.isChecked():
options.smartcovercrop = True
if GUI.noSmartCoverCropBox.isChecked():
options.nosmartcovercrop = True
if GUI.coverFillBox.isChecked():
options.coverfill = True
if GUI.metadataTitleBox.checkState() == Qt.CheckState.PartiallyChecked:
@@ -1077,7 +1077,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
'disableProcessingBox': GUI.disableProcessingBox.checkState(),
'pdfExtractBox': GUI.pdfExtractBox.checkState(),
'pdfWidthBox': GUI.pdfWidthBox.checkState(),
'smartCoverCropBox': GUI.smartCoverCropBox.checkState(),
'noSmartCoverCropBox': GUI.noSmartCoverCropBox.checkState(),
'coverFillBox': GUI.coverFillBox.checkState(),
'metadataTitleBox': GUI.metadataTitleBox.checkState(),
'mozJpegBox': GUI.mozJpegBox.checkState(),

10
kindlecomicconverter/KCC_ui.py
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@@ -344,10 +344,10 @@ class Ui_mainWindow(object):
self.gridLayout_2.addWidget(self.metadataTitleBox, 7, 0, 1, 1)
self.smartCoverCropBox = QCheckBox(self.optionWidget)
self.smartCoverCropBox.setObjectName(u"smartCoverCropBox")
self.noSmartCoverCropBox = QCheckBox(self.optionWidget)
self.noSmartCoverCropBox.setObjectName(u"noSmartCoverCropBox")
self.gridLayout_2.addWidget(self.smartCoverCropBox, 11, 1, 1, 1)
self.gridLayout_2.addWidget(self.noSmartCoverCropBox, 11, 1, 1, 1)
self.rotateFirstBox = QCheckBox(self.optionWidget)
self.rotateFirstBox.setObjectName(u"rotateFirstBox")
@@ -748,9 +748,9 @@ class Ui_mainWindow(object):
#endif // QT_CONFIG(tooltip)
self.metadataTitleBox.setText(QCoreApplication.translate("mainWindow", u"Metadata Title", None))
#if QT_CONFIG(tooltip)
self.smartCoverCropBox.setToolTip(QCoreApplication.translate("mainWindow", u"Attempt to crop main cover from wide image.", None))
self.noSmartCoverCropBox.setToolTip(QCoreApplication.translate("mainWindow", u"Disable attempt to crop main cover from wide image.", None))
#endif // QT_CONFIG(tooltip)
self.smartCoverCropBox.setText(QCoreApplication.translate("mainWindow", u"Smart Cover Crop", None))
self.noSmartCoverCropBox.setText(QCoreApplication.translate("mainWindow", u"No Smart Cover Crop", None))
#if QT_CONFIG(tooltip)
self.rotateFirstBox.setToolTip(QCoreApplication.translate("mainWindow", u"<html><head/><body><p>When the spread splitter option is partially checked,</p><p><span style=\" font-weight:600; text-decoration: underline;\">Unchecked - Rotate Last<br/></span>Put the rotated 2 page spread after the split spreads.</p><p><span style=\" font-weight:600; text-decoration: underline;\">Checked - Rotate First<br/></span>Put the rotated 2 page spread before the split spreads.</p></body></html>", None))
#endif // QT_CONFIG(tooltip)

10
kindlecomicconverter/comic2ebook.py
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@@ -556,7 +556,7 @@ def buildEPUB(path, chapternames, tomenumber, ischunked, cover: image.Cover, ori
f.close()
build_html_start = perf_counter()
if cover:
cover.save_to_epub(os.path.join(path, 'OEBPS', 'Images', 'cover.jpg'), tomenumber, len_tomes)
cover.save_to_folder(os.path.join(path, 'OEBPS', 'Images', 'cover.jpg'), tomenumber, len_tomes)
dot_clean(path)
options.covers.append((cover, options.uuid))
for dirpath, dirnames, filenames in os.walk(os.path.join(path, 'OEBPS', 'Images')):
@@ -1394,8 +1394,8 @@ def makeParser():
help="Use the legacy PDF image extraction method from KCC 8 and earlier")
processing_options.add_argument("--pdfwidth", action="store_true", dest="pdfwidth", default=False,
help="Render vector PDFs to device width instead of height.")
processing_options.add_argument("--smartcovercrop", action="store_true", dest="smartcovercrop", default=False,
help="Attempt to crop main cover from wide image")
processing_options.add_argument("--nosmartcovercrop", action="store_true", dest="nosmartcovercrop", default=False,
help="Disable attempt to crop main cover from wide image")
processing_options.add_argument("--coverfill", action="store_true", dest="coverfill", default=False,
help="Crop cover to fill screen")
processing_options.add_argument("-u", "--upscale", action="store_true", dest="upscale", default=False,
@@ -1712,12 +1712,16 @@ def makeBook(source, qtgui=None, job_progress=''):
filepath.append(getOutputFilename(source, options.output, '.cbz', ' ' + str(tomeNumber)))
else:
filepath.append(getOutputFilename(source, options.output, '.cbz', ''))
if cover.smartcover:
cover.save_to_folder(os.path.join(tome, 'OEBPS', 'Images', 'cover.jpg'), tomeNumber, len(tomes))
makeZIP(tome + '_comic', os.path.join(tome, "OEBPS", "Images"), job_progress)
elif options.format == 'PDF':
print(f"{job_progress}Creating PDF file with PyMuPDF...")
# determine output filename based on source and tome count
suffix = (' ' + str(tomeNumber)) if len(tomes) > 1 else ''
output_file = getOutputFilename(source, options.output, '.pdf', suffix)
if cover.smartcover:
cover.save_to_folder(os.path.join(tome, 'OEBPS', 'Images', 'cover.jpg'), tomeNumber, len(tomes))
# use optimized buildPDF logic with streaming and compression
output_pdf = buildPDF(tome, options.title, job_progress, None, output_file)
filepath.append(output_pdf)

7
kindlecomicconverter/image.py
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@@ -569,6 +569,7 @@ class Cover:
self.options = opt
self.source = source
self.image = Image.open(source)
self.smartcover = False
# backwards compatibility for Pillow >9.1.0
if not hasattr(Image, 'Resampling'):
Image.Resampling = Image
@@ -579,7 +580,7 @@ class Cover:
self.image = ImageOps.autocontrast(self.image, preserve_tone=True)
if not self.options.forcecolor:
self.image = self.image.convert('L')
if self.options.smartcovercrop:
if not self.options.nosmartcovercrop:
self.crop_main_cover()
size = list(self.options.profileData[1])
@@ -595,17 +596,19 @@ class Cover:
def crop_main_cover(self):
w, h = self.image.size
if w / h > 2:
self.smartcover = True
if self.options.righttoleft:
self.image = self.image.crop((w/6, 0, w/2 - w * 0.02, h))
else:
self.image = self.image.crop((w/2 + w * 0.02, 0, 5/6 * w, h))
elif w / h > 1.34:
self.smartcover = True
if self.options.righttoleft:
self.image = self.image.crop((0, 0, w/2 - w * 0.03, h))
else:
self.image = self.image.crop((w/2 + w * 0.03, 0, w, h))
def save_to_epub(self, target, tomeid, len_tomes=0):
def save_to_folder(self, target, tomeid, len_tomes=0):
try:
if tomeid == 0:
self.image.save(target, "JPEG", optimize=1, quality=self.options.jpegquality)