125 lines
3.7 KiB
Python
125 lines
3.7 KiB
Python
# -*- coding:utf-8 -*-
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# Copyright (c) 2009-2012 - Simon Conseil
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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"""
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Prepare images: resize images, and create thumbnails with some options
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(squared thumbs, ...).
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"""
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from __future__ import division
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import logging
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import os
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from PIL import Image as PILImage
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from PIL import ImageDraw, ImageOps
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class Image:
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""" Image container
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resize, thumbnail, ...
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:param filename: path to an image
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"""
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def __init__(self, filename):
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self.filename = filename
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self.imgname = os.path.split(filename)[1]
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self.img = PILImage.open(filename)
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def save(self, filename, quality=90):
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self.img.save(filename, quality=quality)
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def resize(self, size):
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""" Resize the image
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- check if the image format is portrait or landscape and adjust `size`.
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- compute the width and height ratio, and keep the min to resize the
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image inside the `size` box without distorting it.
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:param size: tuple with the (with, height) to resize
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"""
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if self.img.size[0] > self.img.size[1]:
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newsize = size
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else:
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newsize = (size[1], size[0])
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wratio = newsize[0] / self.img.size[0]
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hratio = newsize[1] / self.img.size[1]
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ratio = min(wratio, hratio)
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newsize = (int(ratio * self.img.size[0]),
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int(ratio * self.img.size[1]))
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if ratio < 1:
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self.img = self.img.resize(newsize, PILImage.ANTIALIAS)
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def add_copyright(self, text):
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"Add a copyright to the image"
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draw = ImageDraw.Draw(self.img)
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draw.text((5, self.img.size[1] - 15), '\xa9 ' + text)
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def thumbnail(self, filename, box, fit=True, quality=90):
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"Create a thumbnail image"
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if fit:
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self.img = ImageOps.fit(self.img, box, PILImage.ANTIALIAS)
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else:
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self.img.thumbnail(box, PILImage.ANTIALIAS)
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self.img.save(filename, quality=quality)
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def copy_exif(srcfile, dstfile):
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"Copy the exif metadatas from src to dest images"
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logger = logging.getLogger(__name__)
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import pyexiv2
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if pyexiv2.version_info[1] == 1:
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src = pyexiv2.Image(srcfile)
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dst = pyexiv2.Image(dstfile)
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src.readMetadata()
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dst.readMetadata()
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try:
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src.copyMetadataTo(dst)
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except:
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logger.error("metadata not copied for %s.", srcfile)
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return
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dst.writeMetadata()
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else:
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src = pyexiv2.ImageMetadata(srcfile)
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dst = pyexiv2.ImageMetadata(dstfile)
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src.read()
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dst.read()
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try:
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src.copy(dst)
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except:
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logger.error("metadata not copied for %s.", srcfile)
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return
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dst.write()
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