This file is indexed.

/usr/lib/python3/dist-packages/PIL/ImageQt.py is in python3-pil 3.1.2-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
#
# The Python Imaging Library.
# $Id$
#
# a simple Qt image interface.
#
# history:
# 2006-06-03 fl: created
# 2006-06-04 fl: inherit from QImage instead of wrapping it
# 2006-06-05 fl: removed toimage helper; move string support to ImageQt
# 2013-11-13 fl: add support for Qt5 (aurelien.ballier@cyclonit.com)
#
# Copyright (c) 2006 by Secret Labs AB
# Copyright (c) 2006 by Fredrik Lundh
#
# See the README file for information on usage and redistribution.
#

from PIL import Image
from PIL._util import isPath
from io import BytesIO

qt_is_installed = True
qt_version = None
try:
    from PyQt5.QtGui import QImage, qRgba, QPixmap
    from PyQt5.QtCore import QBuffer, QIODevice
    qt_version = '5'
except ImportError:
    try:
        from PyQt4.QtGui import QImage, qRgba, QPixmap
        from PyQt4.QtCore import QBuffer, QIODevice
        qt_version = '4'
    except ImportError:
        try:
            from PySide.QtGui import QImage, qRgba, QPixmap
            from PySide.QtCore import QBuffer, QIODevice
            qt_version = 'side'
        except ImportError:
            qt_is_installed = False


def rgb(r, g, b, a=255):
    """(Internal) Turns an RGB color into a Qt compatible color integer."""
    # use qRgb to pack the colors, and then turn the resulting long
    # into a negative integer with the same bitpattern.
    return (qRgba(r, g, b, a) & 0xffffffff)


# :param im A PIL Image object, or a file name
# (given either as Python string or a PyQt string object)

def fromqimage(im):
    buffer = QBuffer()
    buffer.open(QIODevice.ReadWrite)
    # preserve alha channel with png
    # otherwise ppm is more friendly with Image.open
    if im.hasAlphaChannel():
        im.save(buffer, 'png')
    else:
        im.save(buffer, 'ppm')

    b = BytesIO()
    try:
        b.write(buffer.data())
    except TypeError:
        # workaround for Python 2
        b.write(str(buffer.data()))
    buffer.close()
    b.seek(0)

    return Image.open(b)


def fromqpixmap(im):
    return fromqimage(im)
    # buffer = QBuffer()
    # buffer.open(QIODevice.ReadWrite)
    # # im.save(buffer)
    # # What if png doesn't support some image features like animation?
    # im.save(buffer, 'ppm')
    # bytes_io = BytesIO()
    # bytes_io.write(buffer.data())
    # buffer.close()
    # bytes_io.seek(0)
    # return Image.open(bytes_io)


def align8to32(bytes, width, mode):
    """
    converts each scanline of data from 8 bit to 32 bit aligned
    """

    bits_per_pixel = {
        '1': 1,
        'L': 8,
        'P': 8,
    }[mode]

    # calculate bytes per line and the extra padding if needed
    bits_per_line = bits_per_pixel * width
    full_bytes_per_line, remaining_bits_per_line = divmod(bits_per_line, 8)
    bytes_per_line = full_bytes_per_line + (1 if remaining_bits_per_line else 0)

    extra_padding = -bytes_per_line % 4

    # already 32 bit aligned by luck
    if not extra_padding:
        return bytes

    new_data = []
    for i in range(len(bytes) // bytes_per_line):
        new_data.append(bytes[i*bytes_per_line:(i+1)*bytes_per_line] + b'\x00' * extra_padding)

    return b''.join(new_data)


def _toqclass_helper(im):
    data = None
    colortable = None

    # handle filename, if given instead of image name
    if hasattr(im, "toUtf8"):
        # FIXME - is this really the best way to do this?
        if str is bytes:
            im = unicode(im.toUtf8(), "utf-8")
        else:
            im = str(im.toUtf8(), "utf-8")
    if isPath(im):
        im = Image.open(im)

    if im.mode == "1":
        format = QImage.Format_Mono
    elif im.mode == "L":
        format = QImage.Format_Indexed8
        colortable = []
        for i in range(256):
            colortable.append(rgb(i, i, i))
    elif im.mode == "P":
        format = QImage.Format_Indexed8
        colortable = []
        palette = im.getpalette()
        for i in range(0, len(palette), 3):
            colortable.append(rgb(*palette[i:i+3]))
    elif im.mode == "RGB":
        data = im.tobytes("raw", "BGRX")
        format = QImage.Format_RGB32
    elif im.mode == "RGBA":
        try:
            data = im.tobytes("raw", "BGRA")
        except SystemError:
            # workaround for earlier versions
            r, g, b, a = im.split()
            im = Image.merge("RGBA", (b, g, r, a))
        format = QImage.Format_ARGB32
    else:
        raise ValueError("unsupported image mode %r" % im.mode)

    # must keep a reference, or Qt will crash!
    __data = data or align8to32(im.tobytes(), im.size[0], im.mode)
    return {
        'data': __data, 'im': im, 'format': format, 'colortable': colortable
    }

##
# An PIL image wrapper for Qt.  This is a subclass of PyQt's QImage
# class.
#
# @param im A PIL Image object, or a file name (given either as Python
#     string or a PyQt string object).

if qt_is_installed:
    class ImageQt(QImage):

        def __init__(self, im):
            im_data = _toqclass_helper(im)
            QImage.__init__(self,
                            im_data['data'], im_data['im'].size[0],
                            im_data['im'].size[1], im_data['format'])
            if im_data['colortable']:
                self.setColorTable(im_data['colortable'])


def toqimage(im):
    return ImageQt(im)


def toqpixmap(im):
    # # This doesn't work. For now using a dumb approach.
    # im_data = _toqclass_helper(im)
    # result = QPixmap(im_data['im'].size[0], im_data['im'].size[1])
    # result.loadFromData(im_data['data'])
    # Fix some strange bug that causes
    if im.mode == 'RGB':
        im = im.convert('RGBA')

    qimage = toqimage(im)
    return QPixmap.fromImage(qimage)