A "Covers" folder next to source files defines custom covers (#1432)

* A "Covers" folder next to source files defines custom covers

* fix case with output folder unchecked

README.md

@@ -1,6 +1,6 @@
 Most manga conversion methods for ereaders add margins. But KCC enables true fullscreen from top to bottom. 
 
-![header](images/header_margins.jpeg)
+![header](images/header_margins720.jpeg)
 
 (feat. Ya Boy Kongming! and Fire Force from a [Humble Bundle](https://humblebundleinc.sjv.io/xL6Zv1) PDF source.)
 
@@ -19,7 +19,7 @@ KCC runs on Windows, macOS, and Linux.
 
 Supported input formats include JPG/PNG image files in folders, archives like CBZ/EPUB, or PDF.
 
-Supported output formats include MOBI/AZW3, EPUB, KEPUB, CBZ, and PDF.
+Supported output formats include MOBI/AZW3, EPUB, KEPUB, CBZ, PDF, and folders of images.
 
 The absolute highest quality source files are DRM-free PDFs from [Humble Bundle](https://humblebundleinc.sjv.io/xL6Zv1)/Fanatical.
 The PDFs are often x12000 resolution or better, while even the 10" Kindle Scribe is only x2480.
@@ -33,23 +33,23 @@ KCC's main goal is maximum image quality at significantly smaller file size. For
 
 2) fixes black levels to avoid gray/faded blacks found in many Kindle Store manga
 
-![black](images/black.jpeg)
+![black](images/black720.jpeg)
 
 3) fixes [the rainbow effect on Kaleido 3 color eink](https://www.youtube.com/watch?v=Dw2HTJCGMhw) without blur:
 
-![rainbow](images/rainbow2.jpeg)
+![rainbow](images/rainbow720.jpeg)
 
 4) can [semi-automatically detect 2-page spreads](https://www.youtube.com/watch?v=kfIX67f7Aqk) from pre-split single pages:
 
-![before](images/spreadbefore3.jpeg)
+![before](images/spreadbefore720.jpeg)
 
 You can view combined spreads either rotated or not:
 
-![full](images/full.jpeg)
+![full](images/full720.jpeg)
 
 You can view the split halves either before or after combined spreads:
 
-![half](images/half.jpeg)
+![half](images/half720.jpeg)
 
 ## Demo
 
@@ -287,6 +287,7 @@ PROCESSING:
   --pdfwidth            Render vector PDFs based on device width instead of height.
   -u, --upscale         Resize images smaller than device's resolution
   -s, --stretch         Stretch images to device's resolution
+  --wallpaper           Crop images to to fill screen
   -r SPLITTER, --splitter SPLITTER
                         Double page parsing mode. 0: Split 1: Rotate 2: Both [Default=0]
   -g GAMMA, --gamma GAMMA

gui/KCC.ui

@@ -693,6 +693,18 @@ Keeping this file may crash some readers like the Kobo native CBZ reader.</strin
          </property>
         </widget>
        </item>
+       <item row="11" column="0">
+        <widget class="QCheckBox" name="wallpaperBox">
+         <property name="toolTip">
+          <string>Auto check various options intended for KOreader wallpapers.
+
+Will also crop images to fill the screen centered.</string>
+         </property>
+         <property name="text">
+          <string>Wallpaper mode</string>
+         </property>
+        </widget>
+       </item>
       </layout>
      </widget>
     </item>

kindlecomicconverter/KCC_gui.py

@@ -127,6 +127,8 @@ class Icons:
         self.MOBIFormat.addPixmap(QPixmap(":/Formats/icons/MOBI.png"), QIcon.Mode.Normal, QIcon.State.Off)
         self.CBZFormat = QIcon()
         self.CBZFormat.addPixmap(QPixmap(":/Formats/icons/CBZ.png"), QIcon.Mode.Normal, QIcon.State.Off)
+        self.FOLDERFormat = QIcon()
+        self.FOLDERFormat.addPixmap(QPixmap(":/Other/icons/folder_new.png"), QIcon.Mode.Normal, QIcon.State.Off)
         self.EPUBFormat = QIcon()
         self.EPUBFormat.addPixmap(QPixmap(":/Formats/icons/EPUB.png"), QIcon.Mode.Normal, QIcon.State.Off)
         self.KFXFormat = QIcon()
@@ -251,6 +253,8 @@ def get_options():
         options.righttoleft = True
     if GUI.lightnovelBox.isChecked():
         options.lightnovel = True
+    if GUI.wallpaperBox.isChecked():
+        options.wallpaper = True
     if GUI.ebokBox.isChecked():
         options.ebok = True
     if GUI.invertDirectionBox.isChecked():
@@ -442,6 +446,9 @@ class WorkerThread(QThread):
             if gui_current_format == 'CBZ':
                 MW.addMessage.emit('Creating CBZ files', 'info', False)
                 GUI.progress.content = 'Creating CBZ files'
+            elif gui_current_format == 'FOLDER':
+                MW.addMessage.emit('Creating folders', 'info', False)
+                GUI.progress.content = 'Creating folders'
             elif gui_current_format == 'PDF':
                 MW.addMessage.emit('Creating PDF files', 'info', False)
                 GUI.progress.content = 'Creating PDF files'
@@ -487,6 +494,8 @@ class WorkerThread(QThread):
                 GUI.progress.content = ''
                 if gui_current_format == 'CBZ':
                     MW.addMessage.emit('Creating CBZ files... <b>Done!</b>', 'info', True)
+                elif gui_current_format == 'FOLDER':
+                    MW.addMessage.emit('Creating folders... <b>Done!</b>', 'info', True)
                 elif gui_current_format == 'PDF':
                     MW.addMessage.emit('Creating PDF files... <b>Done!</b>', 'info', True)
                 else:
@@ -962,6 +971,14 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
             GUI.noQuantizeBox.setEnabled(False)
             GUI.forcePngRgbBox.setEnabled(False)           
 
+    def toggleWallpaperBox(self, value):
+        if value == 2:
+            GUI.mozJpegBox.setCheckState(Qt.CheckState.PartiallyChecked)
+            GUI.pngLegacyBox.setChecked(True)
+            GUI.rotateBox.setChecked(True)
+            GUI.noRotateBox.setChecked(True)
+            GUI.upscaleBox.setChecked(True)
+            self.changeFormat(3)
 
     def togglechunkSizeCheckBox(self, value):
         GUI.chunkSizeWidget.setVisible(value)
@@ -1061,9 +1078,10 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
             GUI.upscaleBox.setChecked(True)
         elif not GUI.webtoonBox.isChecked():
             GUI.chunkSizeCheckBox.setEnabled(True)
-        if GUI.formats[str(GUI.formatBox.currentText())]['format'] in ('CBZ', 'PDF') and not GUI.webtoonBox.isChecked():
+        if GUI.formats[str(GUI.formatBox.currentText())]['format'] in ('CBZ', 'FOLDER', 'PDF') and not GUI.webtoonBox.isChecked():
             self.addMessage("Partially check W/B Margins if you don't want KCC to extend the image margins.", 'info')
             GUI.borderBox.setCheckState(Qt.CheckState.PartiallyChecked)
+            GUI.mozJpegBox.setCheckState(Qt.CheckState.PartiallyChecked)
         else:
             GUI.borderBox.setCheckState(Qt.CheckState.Unchecked)
 
@@ -1178,6 +1196,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
         self.settings.setValue('windowSize', str(MW.size().width()) + 'x' + str(MW.size().height()))
         self.settings.setValue('options', {'mangaBox': GUI.mangaBox.checkState(),
                                            'lightnovelBox': GUI.lightnovelBox.checkState(),
+                                           'wallpaperBox': GUI.wallpaperBox.checkState(),
                                            'ebokBox': GUI.ebokBox.checkState(),
                                            'invertDirectionBox': GUI.invertDirectionBox.checkState(),
                                            'languageEdit': GUI.languageEdit.text(),
@@ -1359,6 +1378,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
             "MOBI/AZW3": {'icon': 'MOBI', 'format': 'MOBI'},
             "EPUB": {'icon': 'EPUB', 'format': 'EPUB'},
             "CBZ": {'icon': 'CBZ', 'format': 'CBZ'},
+            "Folder of images": {'icon': 'FOLDER', 'format': 'FOLDER'},
             "PDF": {'icon': 'EPUB', 'format': 'PDF'},
             "PDF (200MB limit)": {'icon': 'EPUB', 'format': 'PDF-200MB'},
             "KFX (Send to Kindle EPUB)": {'icon': 'KFX', 'format': 'KFX'},
@@ -1574,6 +1594,7 @@ class KCCGUI(KCC_ui.Ui_mainWindow):
         GUI.webtoonBox.stateChanged.connect(self.togglewebtoonBox)
         GUI.qualityBox.stateChanged.connect(self.togglequalityBox)
         GUI.mozJpegBox.stateChanged.connect(self.toggleImageFormatBox)
+        GUI.wallpaperBox.stateChanged.connect(self.toggleWallpaperBox)
         GUI.chunkSizeCheckBox.stateChanged.connect(self.togglechunkSizeCheckBox)
         GUI.deviceBox.activated.connect(self.changeDevice)
         GUI.formatBox.activated.connect(self.changeFormat)

kindlecomicconverter/KCC_ui.py

@@ -352,6 +352,11 @@ class Ui_mainWindow(object):
 
         self.gridLayout_2.addWidget(self.keepComicInfoBox, 11, 3, 1, 1)
 
+        self.wallpaperBox = QCheckBox(self.optionWidget)
+        self.wallpaperBox.setObjectName(u"wallpaperBox")
+
+        self.gridLayout_2.addWidget(self.wallpaperBox, 11, 0, 1, 1)
+
 
         self.gridLayout.addWidget(self.optionWidget, 5, 0, 1, 2)
 
@@ -854,6 +859,12 @@ class Ui_mainWindow(object):
 "Keeping this file may crash some readers like the Kobo native CBZ reader.", None))
 #endif // QT_CONFIG(tooltip)
         self.keepComicInfoBox.setText(QCoreApplication.translate("mainWindow", u"Keep ComicInfo.xml", None))
+#if QT_CONFIG(tooltip)
+        self.wallpaperBox.setToolTip(QCoreApplication.translate("mainWindow", u"Auto check various options intended for KOreader wallpapers.\n"
+"\n"
+"Will also crop images to fill the screen centered.", None))
+#endif // QT_CONFIG(tooltip)
+        self.wallpaperBox.setText(QCoreApplication.translate("mainWindow", u"Wallpaper mode", None))
 #if QT_CONFIG(tooltip)
         self.editorButton.setToolTip(QCoreApplication.translate("mainWindow", u"<html><head/><body><p style='white-space:pre'>Shift+Click to edit directory.</p></body></html>", None))
 #endif // QT_CONFIG(tooltip)

kindlecomicconverter/comic2ebook.py

@@ -1058,6 +1058,8 @@ def getWorkFolder(afile, options, workdir=None):
 
 
 def getOutputFilename(srcpath, wantedname, ext, tomenumber):
+    if options.folder_output:
+        ext = ''
     source_path = Path(srcpath)
     if srcpath[-1] == os.path.sep:
         srcpath = srcpath[:-1]
@@ -1069,7 +1071,7 @@ def getOutputFilename(srcpath, wantedname, ext, tomenumber):
             ext = '.kepub.epub'
     if wantedname is not None:
         wanted_root, wanted_ext = os.path.splitext(wantedname)
-        if wantedname.endswith(ext):
+        if not options.folder_output and wantedname.endswith(ext):
             filename = os.path.abspath(wantedname)
         elif wanted_ext == '.mobi' and ext == '.epub':
             filename = os.path.abspath(wanted_root + ext)
@@ -1093,10 +1095,10 @@ def getOutputFilename(srcpath, wantedname, ext, tomenumber):
             filename = source_path.with_name(name)
         else:
             filename = os.path.splitext(srcpath)[0] + tomenumber + ext
-    if os.path.isfile(filename):
+    if os.path.exists(filename):
         counter = 0
         basename = os.path.splitext(filename)[0]
-        while os.path.isfile(basename + '_kcc' + str(counter) + ext):
+        while os.path.exists(basename + '_kcc' + str(counter) + ext):
             counter += 1
         filename = basename + '_kcc' + str(counter) + ext
     elif options.format == 'MOBI' and ext == '.epub':
@@ -1430,6 +1432,9 @@ def slugify(value, options, is_natural_sorted):
     return value
 
 def makeZIP(zipfilename, basedir, job_progress='', isepub=False):
+    if options.folder_output:
+        move(basedir, zipfilename)
+        return zipfilename
     start = perf_counter()
     if SEVENZIP in available_archive_tools():
         if isepub:
@@ -1475,6 +1480,8 @@ def makeParser():
                               help="Manga style (right-to-left reading and splitting)")
     main_options.add_argument("--lightnovel", action="store_true", dest="lightnovel", default=False,
                               help="Only resize images and preserve original file structure.")
+    main_options.add_argument("--wallpaper", action="store_true", dest="wallpaper", default=False,
+                              help="Crop to fill screen.")
     main_options.add_argument("--ebok", action="store_true", dest="ebok", default=False,
                               help="Force EBOK tag instead of PDOC for MOBI")
     main_options.add_argument("--invertdirection", action="store_true", dest="invertdirection", default=False,
@@ -1639,6 +1646,12 @@ def checkOptions(options):
         options.keep_epub = True
         options.format = 'MOBI'
     options.kfx = False
+    options.skip_zip = False
+    options.folder_output = False
+    if options.format == 'FOLDER':
+        options.format = 'CBZ'
+        options.skip_zip = True
+        options.folder_output = True
     if options.format == 'Auto':
         if options.profile in ['KDX']:
             options.format = 'CBZ'
@@ -1811,6 +1824,7 @@ def makeBook(source, qtgui=None, job_progress=''):
     print(f"{job_progress}Preparing source images...")
     path = getWorkFolder(source, options)
     print(f"{job_progress}Checking images...")
+    _, ext = os.path.splitext(source)
 
     if options.lightnovel:
         for root, _, files in os.walk(os.path.join(path, 'OEBPS', 'Images')):
@@ -1831,7 +1845,6 @@ def makeBook(source, qtgui=None, job_progress=''):
                         if img.size[0] > x or img.size[1] > y:
                             img = ImageOps.contain(img, (x, y))
                             img.save(os.path.join(root, file), quality=options.jpegquality)
-        _, ext = os.path.splitext(source)
         if ext != '.epub':
             ext = '.cbz'
         output_file = getOutputFilename(source, options.output, ext, '')
@@ -1874,6 +1887,25 @@ def makeBook(source, qtgui=None, job_progress=''):
     if options.filefusion:
         # Strip the fusion_0001_ sort prefix from makeFusion if present
         chapterNames = {k: sub(r'^fusion_\d{4}_', '', v) for k, v in chapterNames.items()}
+
+    source_path = Path(source)
+    options.customcover = False
+    if source_path.parent.joinpath('Covers').is_dir():
+        series = os_sorted(filter(lambda s: s.endswith(ext) and '_kcc' not in s, os.listdir(source_path.parent)))
+        source_index = series.index(os.path.basename(source))
+        covers = os.listdir(source_path.parent.joinpath('Covers'))
+        filtered_covers = []
+        for cover in covers:
+            _, cover_ext = getImageFileName(cover)
+            if cover_ext in IMAGE_TYPES:
+                filtered_covers.append(cover)
+        sorted_covers = os_sorted(filtered_covers)
+        try:
+            cover_path = source_path.parent.joinpath('Covers', sorted_covers[source_index])
+            options.customcover = True
+        except IndexError:
+            pass
+
     cover = None
     if not options.webtoon:
         cover = image.Cover(cover_path, options)
@@ -1955,7 +1987,7 @@ 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 and cover.smartcover:
+            if cover and (cover.smartcover or options.customcover):
                 cover.save_to_folder(os.path.join(tome, 'OEBPS', 'Images', '##cover.jpg'), tomeNumber, len(tomes))
             if options.comicinfo_xml:
                 with open(os.path.join(tome, 'OEBPS', 'Images', 'ComicInfo.xml'), 'wb') as xmlOutput:
@@ -1966,7 +1998,7 @@ def makeBook(source, qtgui=None, job_progress=''):
             # 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 and cover.smartcover:
+            if cover and (cover.smartcover or options.customcover):
                 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)

kindlecomicconverter/image.py

@@ -513,7 +513,9 @@ class ComicPage:
             self.image = erase_rainbow_artifacts(self.image, is_color)
 
     def resizeImage(self):
-        if self.opt.norotate and self.targetPathOrder in ('-kcc-a', '-kcc-d') and not self.opt.kindle_scribe_azw3:
+        if self.opt.wallpaper:
+            pass
+        elif self.opt.norotate and self.targetPathOrder in ('-kcc-a', '-kcc-d') and not self.opt.kindle_scribe_azw3:
             # TODO: Kindle Scribe case
             if self.opt.kindle_azw3 and any(dim > 1920 for dim in self.image.size):
                 self.image = ImageOps.contain(self.image, (1920, 1920), Image.Resampling.LANCZOS)
@@ -536,6 +538,8 @@ class ComicPage:
                 self.image = ImageOps.pad(self.image, self.opt.kfx_resolution, method=method, color=self.fill)
         elif self.opt.stretch:
             self.image = self.image.resize(self.size, method)
+        elif self.opt.wallpaper:
+            self.image = ImageOps.fit(self.image, self.size, method=method)
         elif method == Image.Resampling.BICUBIC and not self.opt.upscale:
             pass
         else: # if image bigger than device resolution or smaller with upscaling