121 lines
3.8 KiB
Python
121 lines
3.8 KiB
Python
#
|
|
# Gramps - a GTK+/GNOME based genealogy program
|
|
#
|
|
# Copyright (C) 2000-2006 Donald N. Allingham
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
#
|
|
|
|
# $Id:ImgManip.py 9912 2008-01-22 09:17:46Z acraphae $
|
|
|
|
"""
|
|
Image manipulation routines.
|
|
"""
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# Standard python modules
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
import os
|
|
import tempfile
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# GTK/Gnome modules
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
import gtk
|
|
import gobject
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# resize_to_jpeg
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
def resize_to_jpeg(source, destination, width, height):
|
|
"""
|
|
Create the destination, derived from the source, resizing it to the
|
|
specified size, while converting to JPEG.
|
|
|
|
:param source: source image file, in any format that gtk recognizes
|
|
:type source: unicode
|
|
:param destination: destination image file, output written in jpeg format
|
|
:type destination: unicode
|
|
:param width: desired width of the destination image
|
|
:type width: int
|
|
:param height: desired height of the destination image
|
|
:type height: int
|
|
"""
|
|
img = gtk.gdk.pixbuf_new_from_file(source)
|
|
scaled = img.scale_simple(width, height, gtk.gdk.INTERP_BILINEAR)
|
|
scaled.save(destination, 'jpeg')
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# image_size
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
def image_size(source):
|
|
"""
|
|
Return the width and size of the specified image.
|
|
|
|
:param source: source image file, in any format that gtk recongizes
|
|
:type source: unicode
|
|
:rtype: tuple(int, int)
|
|
:returns: a tuple consisting of the width and height
|
|
"""
|
|
try:
|
|
img = gtk.gdk.pixbuf_new_from_file(source)
|
|
width = img.get_width()
|
|
height = img.get_height()
|
|
except gobject.GError:
|
|
width = 0
|
|
height = 0
|
|
return (width, height)
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# resize_to_jpeg_buffer
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
def resize_to_jpeg_buffer(source, width, height):
|
|
"""
|
|
Loads the image, converting the file to JPEG, and resizing it. Instead of
|
|
saving the file, the data is returned in a buffer.
|
|
|
|
:param source: source image file, in any format that gtk recognizes
|
|
:type source: unicode
|
|
:param width: desired width of the destination image
|
|
:type width: int
|
|
:param height: desired height of the destination image
|
|
:type height: int
|
|
:rtype: buffer of data
|
|
:returns: jpeg image as raw data
|
|
"""
|
|
filed, dest = tempfile.mkstemp()
|
|
img = gtk.gdk.pixbuf_new_from_file(source)
|
|
scaled = img.scale_simple(int(width), int(height), gtk.gdk.INTERP_BILINEAR)
|
|
scaled.save(dest, 'jpeg')
|
|
ofile = open(dest, mode='rb')
|
|
data = ofile.read()
|
|
ofile.close()
|
|
try:
|
|
os.unlink(dest)
|
|
except:
|
|
pass
|
|
return data
|
|
|