This file is indexed.

/usr/share/pyshared/PIL/ImageDraw.py is in python-imaging 1.1.7-4ubuntu0.12.04.3.

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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
#
# The Python Imaging Library
# $Id$
#
# drawing interface operations
#
# History:
# 1996-04-13 fl   Created (experimental)
# 1996-08-07 fl   Filled polygons, ellipses.
# 1996-08-13 fl   Added text support
# 1998-06-28 fl   Handle I and F images
# 1998-12-29 fl   Added arc; use arc primitive to draw ellipses
# 1999-01-10 fl   Added shape stuff (experimental)
# 1999-02-06 fl   Added bitmap support
# 1999-02-11 fl   Changed all primitives to take options
# 1999-02-20 fl   Fixed backwards compatibility
# 2000-10-12 fl   Copy on write, when necessary
# 2001-02-18 fl   Use default ink for bitmap/text also in fill mode
# 2002-10-24 fl   Added support for CSS-style color strings
# 2002-12-10 fl   Added experimental support for RGBA-on-RGB drawing
# 2002-12-11 fl   Refactored low-level drawing API (work in progress)
# 2004-08-26 fl   Made Draw() a factory function, added getdraw() support
# 2004-09-04 fl   Added width support to line primitive
# 2004-09-10 fl   Added font mode handling
# 2006-06-19 fl   Added font bearing support (getmask2)
#
# Copyright (c) 1997-2006 by Secret Labs AB
# Copyright (c) 1996-2006 by Fredrik Lundh
#
# See the README file for information on usage and redistribution.
#

import Image, ImageColor

try:
    import warnings
except ImportError:
    warnings = None

##
# A simple 2D drawing interface for PIL images.
# <p>
# Application code should use the <b>Draw</b> factory, instead of
# directly.

class ImageDraw:

    ##
    # Create a drawing instance.
    #
    # @param im The image to draw in.
    # @param mode Optional mode to use for color values.  For RGB
    #    images, this argument can be RGB or RGBA (to blend the
    #    drawing into the image).  For all other modes, this argument
    #    must be the same as the image mode.  If omitted, the mode
    #    defaults to the mode of the image.

    def __init__(self, im, mode=None):
        im.load()
        if im.readonly:
            im._copy() # make it writable
        blend = 0
        if mode is None:
            mode = im.mode
        if mode != im.mode:
            if mode == "RGBA" and im.mode == "RGB":
                blend = 1
            else:
                raise ValueError("mode mismatch")
        if mode == "P":
            self.palette = im.palette
        else:
            self.palette = None
        self.im = im.im
        self.draw = Image.core.draw(self.im, blend)
        self.mode = mode
        if mode in ("I", "F"):
            self.ink = self.draw.draw_ink(1, mode)
        else:
            self.ink = self.draw.draw_ink(-1, mode)
        if mode in ("1", "P", "I", "F"):
            # FIXME: fix Fill2 to properly support matte for I+F images
            self.fontmode = "1"
        else:
            self.fontmode = "L" # aliasing is okay for other modes
        self.fill = 0
        self.font = None

    ##
    # Set the default pen color.

    def setink(self, ink):
        # compatibility
        if warnings:
            warnings.warn(
                "'setink' is deprecated; use keyword arguments instead",
                DeprecationWarning, stacklevel=2
                )
        if Image.isStringType(ink):
            ink = ImageColor.getcolor(ink, self.mode)
        if self.palette and not Image.isNumberType(ink):
            ink = self.palette.getcolor(ink)
        self.ink = self.draw.draw_ink(ink, self.mode)

    ##
    # Set the default background color.

    def setfill(self, onoff):
        # compatibility
        if warnings:
            warnings.warn(
                "'setfill' is deprecated; use keyword arguments instead",
                DeprecationWarning, stacklevel=2
                )
        self.fill = onoff

    ##
    # Set the default font.

    def setfont(self, font):
        # compatibility
        self.font = font

    ##
    # Get the current default font.

    def getfont(self):
        if not self.font:
            # FIXME: should add a font repository
            import ImageFont
            self.font = ImageFont.load_default()
        return self.font

    def _getink(self, ink, fill=None):
        if ink is None and fill is None:
            if self.fill:
                fill = self.ink
            else:
                ink = self.ink
        else:
            if ink is not None:
                if Image.isStringType(ink):
                    ink = ImageColor.getcolor(ink, self.mode)
                if self.palette and not Image.isNumberType(ink):
                    ink = self.palette.getcolor(ink)
                ink = self.draw.draw_ink(ink, self.mode)
            if fill is not None:
                if Image.isStringType(fill):
                    fill = ImageColor.getcolor(fill, self.mode)
                if self.palette and not Image.isNumberType(fill):
                    fill = self.palette.getcolor(fill)
                fill = self.draw.draw_ink(fill, self.mode)
        return ink, fill

    ##
    # Draw an arc.

    def arc(self, xy, start, end, fill=None):
        ink, fill = self._getink(fill)
        if ink is not None:
            self.draw.draw_arc(xy, start, end, ink)

    ##
    # Draw a bitmap.

    def bitmap(self, xy, bitmap, fill=None):
        bitmap.load()
        ink, fill = self._getink(fill)
        if ink is None:
            ink = fill
        if ink is not None:
            self.draw.draw_bitmap(xy, bitmap.im, ink)

    ##
    # Draw a chord.

    def chord(self, xy, start, end, fill=None, outline=None):
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_chord(xy, start, end, fill, 1)
        if ink is not None:
            self.draw.draw_chord(xy, start, end, ink, 0)

    ##
    # Draw an ellipse.

    def ellipse(self, xy, fill=None, outline=None):
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_ellipse(xy, fill, 1)
        if ink is not None:
            self.draw.draw_ellipse(xy, ink, 0)

    ##
    # Draw a line, or a connected sequence of line segments.

    def line(self, xy, fill=None, width=0):
        ink, fill = self._getink(fill)
        if ink is not None:
            self.draw.draw_lines(xy, ink, width)

    ##
    # (Experimental) Draw a shape.

    def shape(self, shape, fill=None, outline=None):
        # experimental
        shape.close()
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_outline(shape, fill, 1)
        if ink is not None:
            self.draw.draw_outline(shape, ink, 0)

    ##
    # Draw a pieslice.

    def pieslice(self, xy, start, end, fill=None, outline=None):
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_pieslice(xy, start, end, fill, 1)
        if ink is not None:
            self.draw.draw_pieslice(xy, start, end, ink, 0)

    ##
    # Draw one or more individual pixels.

    def point(self, xy, fill=None):
        ink, fill = self._getink(fill)
        if ink is not None:
            self.draw.draw_points(xy, ink)

    ##
    # Draw a polygon.

    def polygon(self, xy, fill=None, outline=None):
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_polygon(xy, fill, 1)
        if ink is not None:
            self.draw.draw_polygon(xy, ink, 0)

    ##
    # Draw a rectangle.

    def rectangle(self, xy, fill=None, outline=None):
        ink, fill = self._getink(outline, fill)
        if fill is not None:
            self.draw.draw_rectangle(xy, fill, 1)
        if ink is not None:
            self.draw.draw_rectangle(xy, ink, 0)

    ##
    # Draw text.

    def text(self, xy, text, fill=None, font=None, anchor=None):
        ink, fill = self._getink(fill)
        if font is None:
            font = self.getfont()
        if ink is None:
            ink = fill
        if ink is not None:
            try:
                mask, offset = font.getmask2(text, self.fontmode)
                xy = xy[0] + offset[0], xy[1] + offset[1]
            except AttributeError:
                try:
                    mask = font.getmask(text, self.fontmode)
                except TypeError:
                    mask = font.getmask(text)
            self.draw.draw_bitmap(xy, mask, ink)

    ##
    # Get the size of a given string, in pixels.

    def textsize(self, text, font=None):
        if font is None:
            font = self.getfont()
        return font.getsize(text)

##
# A simple 2D drawing interface for PIL images.
#
# @param im The image to draw in.
# @param mode Optional mode to use for color values.  For RGB
#    images, this argument can be RGB or RGBA (to blend the
#    drawing into the image).  For all other modes, this argument
#    must be the same as the image mode.  If omitted, the mode
#    defaults to the mode of the image.

def Draw(im, mode=None):
    try:
        return im.getdraw(mode)
    except AttributeError:
        return ImageDraw(im, mode)

# experimental access to the outline API
try:
    Outline = Image.core.outline
except:
    Outline = None

##
# (Experimental) A more advanced 2D drawing interface for PIL images,
# based on the WCK interface.
#
# @param im The image to draw in.
# @param hints An optional list of hints.
# @return A (drawing context, drawing resource factory) tuple.

def getdraw(im=None, hints=None):
    # FIXME: this needs more work!
    # FIXME: come up with a better 'hints' scheme.
    handler = None
    if not hints or "nicest" in hints:
        try:
            import _imagingagg
            handler = _imagingagg
        except ImportError:
            pass
    if handler is None:
        import ImageDraw2
        handler = ImageDraw2
    if im:
        im = handler.Draw(im)
    return im, handler

##
# (experimental) Fills a bounded region with a given color.
#
# @param image Target image.
# @param xy Seed position (a 2-item coordinate tuple).
# @param value Fill color.
# @param border Optional border value.  If given, the region consists of
#     pixels with a color different from the border color.  If not given,
#     the region consists of pixels having the same color as the seed
#     pixel.

def floodfill(image, xy, value, border=None):
    "Fill bounded region."
    # based on an implementation by Eric S. Raymond
    pixel = image.load()
    x, y = xy
    try:
        background = pixel[x, y]
        if background == value:
            return # seed point already has fill color
        pixel[x, y] = value
    except IndexError:
        return # seed point outside image
    edge = [(x, y)]
    if border is None:
        while edge:
            newedge = []
            for (x, y) in edge:
                for (s, t) in ((x+1, y), (x-1, y), (x, y+1), (x, y-1)):
                    try:
                        p = pixel[s, t]
                    except IndexError:
                        pass
                    else:
                        if p == background:
                            pixel[s, t] = value
                            newedge.append((s, t))
            edge = newedge
    else:
        while edge:
            newedge = []
            for (x, y) in edge:
                for (s, t) in ((x+1, y), (x-1, y), (x, y+1), (x, y-1)):
                    try:
                        p = pixel[s, t]
                    except IndexError:
                        pass
                    else:
                        if p != value and p != border:
                            pixel[s, t] = value
                            newedge.append((s, t))
            edge = newedge