Fix bug where splitting pages resulted in out-of-order and over-writt…

mangle/convert.py

@@ -36,6 +36,7 @@ def __init__(self, parent, book, directory):
         self.setWindowTitle('Exporting book...')
         self.setMaximum(len(self.book.images))
         self.setValue(0)
+        self.increment = 0
 
         self.archive = None
         if 'CBZ' in self.book.outputFormat:
@@ -79,7 +80,8 @@ def convertAndSave(self, source, target, device, flags, archive, pdf):
 
     def onTimer(self):
         index = self.value()
-        target = os.path.join(self.bookPath, '%05d.png' % index)
+        pages_split = self.increment
+        target = os.path.join(self.bookPath, '%05d.png' % (index + pages_split))
         source = unicode(self.book.images[index])
 
         if index == 0:
@@ -121,30 +123,34 @@ def onTimer(self):
                 archive = self.archive
                 pdf = self.pdf
 
-                # Maybe the user ask for a split, but the picture is not a large one, so skip
-                # it but only for this picture
-                if (flags & ImageFlags.Split) or (flags & ImageFlags.SplitInverse):
+                # Check if page wide enough to split
+                if (flags & ImageFlags.SplitRightLeft) or (flags & ImageFlags.SplitLeftRight):
                     if not image.isSplitable(source):
                         # remove split flags
-                        splitFlags= [ImageFlags.Split, ImageFlags.SplitInverse, ImageFlags.SplitRight, ImageFlags.SplitLeft]
+                        splitFlags = [ImageFlags.SplitRightLeft, ImageFlags.SplitLeftRight, ImageFlags.SplitRight,
+                                      ImageFlags.SplitLeft]
                         for f in splitFlags:
                             flags &= ~f
 
                 # For right page (if requested in options and need for this image)
-                if (flags & ImageFlags.Split):
-                    # New path based on modified index
-                    target = os.path.join(self.bookPath, '%05d.png' % (index * 2 + 0))
-                    self.convertAndSave(source, target, device, flags ^ ImageFlags.Split | ImageFlags.SplitRight, archive, pdf)
-                    # Change target once again for left page
-                    target = os.path.join(self.bookPath, '%05d.png' % (index * 2 + 1))
+                if flags & ImageFlags.SplitRightLeft:
+                    self.convertAndSave(source, target, device,
+                                        flags ^ ImageFlags.SplitRightLeft | ImageFlags.SplitRight,
+                                        archive, pdf)
+
+                    # Change target for left page
+                    target = os.path.join(self.bookPath, '%05d.png' % (index + pages_split + 1))
+                    self.increment += 1
 
                 # For right page (if requested), but in inverted mode
-                if (flags & ImageFlags.SplitInverse):
-                    # New path based on modified index
-                    target = os.path.join(self.bookPath, '%05d.png' % (index * 2 + 0))
-                    self.convertAndSave(source, target, device, flags ^ ImageFlags.SplitInverse | ImageFlags.SplitLeft, archive, pdf)
-                    # Change target once again for left page
-                    target = os.path.join(self.bookPath, '%05d.png' % (index * 2 + 1))
+                if flags & ImageFlags.SplitLeftRight:
+                    self.convertAndSave(source, target, device,
+                                        flags ^ ImageFlags.SplitLeftRight | ImageFlags.SplitLeft,
+                                        archive, pdf)
+
+                    # Change target for left page
+                    target = os.path.join(self.bookPath, '%05d.png' % (index + pages_split + 1))
+                    self.increment += 1
 
                 # Convert page
                 self.convertAndSave(source, target, device, flags, archive, pdf)

mangle/image.py

@@ -20,16 +20,16 @@
 
 
 class ImageFlags:
-    Orient       = 1 << 0
-    Resize       = 1 << 1
-    Frame        = 1 << 2
-    Quantize     = 1 << 3
-    Stretch      = 1 << 4
-    Split        = 1 << 5         # split right then left
-    SplitRight   = 1 << 6    # split only the right page
-    SplitLeft    = 1 << 7     # split only the left page
-    SplitInverse = 1 << 8  # split left then right page
-    AutoCrop     = 1 << 9  # split left then right page
+    Orient = 1 << 0
+    Resize = 1 << 1
+    Frame = 1 << 2
+    Quantize = 1 << 3
+    Stretch = 1 << 4
+    SplitRightLeft = 1 << 5    # split right then left
+    SplitRight = 1 << 6        # split only the right page
+    SplitLeft = 1 << 7         # split only the left page
+    SplitLeftRight = 1 << 8    # split left then right page
+    AutoCrop = 1 << 9
 
 
 class KindleData:
@@ -103,12 +103,14 @@ def func_wrapper(*args, **kwargs):
             return func(*args, **kwargs)
         except IOError: # Exception from PIL about bad image
             return args[0]
+
     return func_wrapper
 
 
 @protect_bad_image    
 def splitLeft(image):
     widthImg, heightImg = image.size
+
     return image.crop((0, 0, widthImg / 2, heightImg))
 
 
@@ -189,6 +191,7 @@ def autoCropImage(image):
     except TypeError: # bad image, specific to chops
         return image
     image = image.crop((x0, y0, xend, yend))
+
     return image
 
 
@@ -254,29 +257,22 @@ def convertImage(source, target, device, flags):
     # Load image from source path
     image = loadImage(source)
 
-
-
     # Format according to palette
     image = formatImage(image)
-    # Apply flag transforms
 
-    # Second pass of first split
+    # Apply flag transforms
     if flags & ImageFlags.SplitRight:
         image = splitRight(image)
-    # First pass of first split option
-    if (flags & ImageFlags.Split):
+    if flags & ImageFlags.SplitRightLeft:
         image = splitLeft(image)
-    # First pass of second splitting option
     if flags & ImageFlags.SplitLeft:
         image = splitLeft(image)
-    # second pass of second splitting option
-    if (flags & ImageFlags.SplitInverse):
+    if flags & ImageFlags.SplitLeftRight:
         image = splitRight(image)
 
     # Auto crop the image, but before manage size and co, clean the source so
     if flags & ImageFlags.AutoCrop:
         image = autoCropImage(image)
-
     if flags & ImageFlags.Orient:
         image = orientImage(image, size)
     if flags & ImageFlags.Resize:
@@ -285,10 +281,7 @@ def convertImage(source, target, device, flags):
         image = stretchImage(image, size)
     if flags & ImageFlags.Frame:
         image = frameImage(image, tuple(palette[:3]), tuple(palette[-3:]), size)
-
-
-
     if flags & ImageFlags.Quantize:
         image = quantizeImage(image, palette)
 
-    saveImage(image, target)
+    saveImage(image, target)

mangle/options.py

@@ -69,9 +69,9 @@ def moveDialogToOptions(self):
         if self.checkboxFrame.isChecked():
             imageFlags |= ImageFlags.Frame
         if self.checkboxSplit.isChecked():
-            imageFlags |= ImageFlags.Split
+            imageFlags |= ImageFlags.SplitRightLeft
         if self.checkboxSplitInverse.isChecked():
-            imageFlags |= ImageFlags.SplitInverse
+            imageFlags |= ImageFlags.SplitLeftRight
         if self.checkboxAutoCrop.isChecked():
             imageFlags |= ImageFlags.AutoCrop