Merge pull request #24 from naparuba/master

Master

mangle/book.py

@@ -30,9 +30,18 @@ import util
 
 # Sort function use to sort files in a natural order, by lowering
 # characters, and manage multi levels of integers (tome 1/ page 1.jpg, etc etc)
+# cf: See http://www.codinghorror.com/blog/archives/001018.html
 def natural_key(string_):
-    """See http://www.codinghorror.com/blog/archives/001018.html"""
-    return [int(s) if s.isdigit() else s.lower() for s in re.split(r'(\d+)', string_)]
+    l = []
+    for s in re.split(r'(\d+)', string_):
+        # QString do not have isdigit, so convert it if need
+        if isinstance(s, QtCore.QString):
+            s = unicode(s)
+        if s.isdigit():
+            l.append(int(s))
+        else:
+            l.append(s.lower())
+    return l
 
 
 class Book(object):

mangle/convert.py

@@ -16,10 +16,10 @@
 
 import os
 import shutil
-
 from PyQt4 import QtGui, QtCore
-from image import ImageFlags
 
+
+from image import ImageFlags
 import cbz
 import image
 import pdfimage
@@ -121,7 +121,6 @@ class DialogConvert(QtGui.QProgressDialog):
                 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):

mangle/image.py

@@ -16,8 +16,7 @@
 
 import os
 
-from PIL import Image, ImageDraw
-
+from PIL import Image, ImageDraw, ImageStat, ImageChops
 
 
 class ImageFlags:
@@ -30,6 +29,7 @@ class ImageFlags:
     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
 
 
 class KindleData:
@@ -179,6 +179,15 @@ def orientImage(image, size):
     return image
 
 
+# We will auto crop the image, by removing just white part around the image
+# by inverting colors, and asking a bounder box ^^
+@protect_bad_image
+def autoCropImage(image):
+    x0, y0, xend, yend = ImageChops.invert(image).getbbox()
+    image = image.crop((x0, y0, xend, yend))
+    return image
+
+
 def frameImage(image, foreground, background, size):
     widthDev, heightDev = size
     widthImg, heightImg = image.size
@@ -240,6 +249,9 @@ def convertImage(source, target, device, flags):
         raise RuntimeError('Unexpected output device %s' % device)
     # Load image from source path
     image = loadImage(source)
+
+    
+
     # Format according to palette
     image = formatImage(image)
     # Apply flag transforms
@@ -257,6 +269,10 @@ def convertImage(source, target, device, flags):
     if (flags & ImageFlags.SplitInverse):
         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:
@@ -265,6 +281,9 @@ 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)
     

mangle/options.py

@@ -35,6 +35,7 @@ class DialogOptions(QtGui.QDialog):
         self.moveDialogToOptions()
 
 
+    # Get options from current book (like a loaded one) and set the dialog values
     def moveOptionsToDialog(self):
         self.lineEditTitle.setText(self.book.title or 'Untitled')
         self.comboBoxDevice.setCurrentIndex(max(self.comboBoxDevice.findText(self.book.device), 0))
@@ -47,12 +48,15 @@ class DialogOptions(QtGui.QDialog):
         self.checkboxFrame.setChecked(self.book.imageFlags & ImageFlags.Frame)
 
 
+    # Save parameters set on the dialogs to the book object if need
     def moveDialogToOptions(self):
+        # First get dialog values
         title        = self.lineEditTitle.text()
         device       = self.comboBoxDevice.currentText()
         outputFormat = self.comboBoxFormat.currentText()
         overwrite    = self.checkboxOverwrite.isChecked()
 
+        # Now compute flags
         imageFlags = 0
         if self.checkboxOrient.isChecked():
             imageFlags |= ImageFlags.Orient
@@ -68,7 +72,12 @@ class DialogOptions(QtGui.QDialog):
             imageFlags |= ImageFlags.Split
         if self.checkboxSplitInverse.isChecked():
             imageFlags |= ImageFlags.SplitInverse
+        if self.checkboxAutoCrop.isChecked():
+            imageFlags |= ImageFlags.AutoCrop
 
+        # If we did modified a value, update the book
+        # and only if we did change something to not
+        # warn for nothing the user
         modified = (
             self.book.title != title or
             self.book.device != device or

mangle/ui/options.ui

@@ -188,6 +188,13 @@
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="QCheckBox" name="checkboxAutoCrop">
+        <property name="text">
+         <string>Auto crop image (remove white around the image)</string>
+        </property>
+       </widget>
+      </item>
       <item>
          <widget class="QLabel" name="label_3">
           <property name="text">