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[SNBOutput] Reduce the size of the images

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This commit is contained in:
Li Fanxi 2010-10-10 17:47:23 +08:00
parent 0c387834f4
commit b4c69ba634
1 changed files with 26 additions and 6 deletions
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32
src/calibre/ebooks/snb/output.py
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@ -21,7 +21,7 @@ def ProcessFileName(fileName):
fileName = fileName.replace("#", "_") fileName = fileName.replace("#", "_")
# Make it lower case # Make it lower case
fileName = fileName.lower() fileName = fileName.lower()
# Change extension from jpeg to jpg # Change extension for image files to png
root, ext = os.path.splitext(fileName) root, ext = os.path.splitext(fileName)
if ext in [ '.jpeg', '.jpg', '.gif', '.svg' ]: if ext in [ '.jpeg', '.jpg', '.gif', '.svg' ]:
fileName = root + '.png' fileName = root + '.png'
@ -187,11 +187,8 @@ class SNBOutput(OutputFormatPlugin):
log.debug('Converting image: %s ...' % item.href) log.debug('Converting image: %s ...' % item.href)
content = m.hrefs[item.href].data content = m.hrefs[item.href].data
if m.hrefs[item.href].media_type != PNG_MIME: if m.hrefs[item.href].media_type != PNG_MIME:
# Convert # Convert & Resize image
from calibre.utils.magick import Image self.HandleImage(content, os.path.join(snbiDir, ProcessFileName(item.href)))
img = Image()
img.load(content)
img.save(os.path.join(snbiDir, ProcessFileName(item.href)))
else: else:
outputFile = open(os.path.join(snbiDir, ProcessFileName(item.href)), 'wb') outputFile = open(os.path.join(snbiDir, ProcessFileName(item.href)), 'wb')
outputFile.write(content) outputFile.write(content)
@ -202,6 +199,29 @@ class SNBOutput(OutputFormatPlugin):
snbFile.FromDir(tdir) snbFile.FromDir(tdir)
snbFile.Output(output_path) snbFile.Output(output_path)
def HandleImage(self, imageData, imagePath):
from calibre.utils.magick import Image
img = Image()
img.load(imageData)
print img.size
(x,y) = img.size
# TODO use the data from device profile
SCREEN_X = 540
SCREEN_Y = 700
# Handle big image only
if x > SCREEN_X or y > SCREEN_Y:
SCREEN_RATIO = float(SCREEN_Y) / SCREEN_X
imgRatio = float(y) / x
xScale = float(x) / SCREEN_X
yScale = float(y) / SCREEN_Y
scale = max(xScale, yScale)
# TODO : intelligent image rotation
# img = img.rotate(90)
# x,y = y,x
img.size = (x / scale, y / scale)
print img.size
img.save(imagePath)
if __name__ == '__main__': if __name__ == '__main__':
from calibre.ebooks.oeb.reader import OEBReader from calibre.ebooks.oeb.reader import OEBReader
from calibre.ebooks.oeb.base import OEBBook from calibre.ebooks.oeb.base import OEBBook