Python pil.Image类代码示例

 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)

 def load(self, im):
     im.fp.seek(0) # rewind
     return Image.fromstring(
         "RGB", im.size,
         Image.core.drawwmf(im.fp.read(), im.size, self.bbox),
         "raw", "BGR", (im.size[0]*3 + 3) & -4, -1
         )

def grabclipboard():
    debug = 0 # temporary interface
    data = Image.core.grabclipboard(debug)
    if Image.isStringType(data):
        import BmpImagePlugin, StringIO
        return BmpImagePlugin.DibImageFile(StringIO.StringIO(data))
    return data

 def __fixup(self, im1):
     # convert image to suitable mode
     if isinstance(im1, _Operand):
         # argument was an image.
         if im1.im.mode in ("1", "L"):
             return im1.im.convert("I")
         elif im1.im.mode in ("I", "F"):
             return im1.im
         else:
             raise ValueError, "unsupported mode: %s" % im1.im.mode
     else:
         # argument was a constant
         if _isconstant(im1) and self.im.mode in ("1", "L", "I"):
             return Image.new("I", self.im.size, im1)
         else:
             return Image.new("F", self.im.size, im1)

 def tostring(self):
     # experimental: convert palette to string
     if self.rawmode:
         raise ValueError("palette contains raw palette data")
     if Image.isStringType(self.palette):
         return self.palette
     return array.array("B", self.palette).tostring()

def open(filename):
    # FIXME: modify to return a WalImageFile instance instead of
    # plain Image object ?

    if hasattr(filename, "read"):
        fp = filename
    else:
        import __builtin__
        fp = __builtin__.open(filename, "rb")

    # read header fields
    header = fp.read(32+24+32+12)
    size = i32(header, 32), i32(header, 36)
    offset = i32(header, 40)

    # load pixel data
    fp.seek(offset)

    im = Image.fromstring("P", size, fp.read(size[0] * size[1]))
    im.putpalette(quake2palette)

    im.format = "WAL"
    im.format_description = "Quake2 Texture"

    # strings are null-terminated
    im.info["name"] = header[:32].split("\0", 1)[0]
    next_name = header[56:56+32].split("\0", 1)[0]
    if next_name:
        im.info["next_name"] = next_name

    return im

def expand(image, border=0, fill=0):
    "Add border to image"
    left, top, right, bottom = _border(border)
    width = left + image.size[0] + right
    height = top + image.size[1] + bottom
    out = Image.new(image.mode, (width, height), _color(fill, image.mode))
    out.paste(image, (left, top))
    return out

    def __init__(self, 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?
            im = unicode(im.toUtf8(), "utf-8")
        if Image.isStringType(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.tostring("raw", "BGRX")
            format = QImage.Format_RGB32
        elif im.mode == "RGBA":
            try:
                data = im.tostring("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!
        self.__data = data or im.tostring()

        QImage.__init__(self, self.__data, im.size[0], im.size[1], format)

        if colortable:
            self.setColorTable(colortable)

 def __init__(self, profile):
     # accepts a string (filename), a file-like object, or a low-level
     # profile object
     if Image.isStringType(profile):
         self._set(core.profile_open(profile), profile)
     elif hasattr(profile, "read"):
         self._set(core.profile_fromstring(profile.read()))
     else:
         self._set(profile) # assume it's already a profile

def load_path(filename):
    "Load a font file, searching along the Python path."
    for dir in sys.path:
        if Image.isDirectory(dir):
            try:
                return load(os.path.join(dir, filename))
            except IOError:
                pass
    raise IOError("cannot find font file")

def build_prototype_image():
    image = Image.new("L", (1,len(_Palm8BitColormapValues),))
    image.putdata(range(len(_Palm8BitColormapValues)))
    palettedata = ()
    for i in range(len(_Palm8BitColormapValues)):
        palettedata = palettedata + _Palm8BitColormapValues[i]
    for i in range(256 - len(_Palm8BitColormapValues)):
        palettedata = palettedata + (0, 0, 0)
    image.putpalette(palettedata)
    return image

def grab(bbox=None):
    size, data = grabber()
    im = Image.fromstring(
        "RGB", size, data,
        # RGB, 32-bit line padding, origo in lower left corner
        "raw", "BGR", (size[0]*3 + 3) & -4, -1
        )
    if bbox:
        im = im.crop(bbox)
    return im

 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

def bdf_char(f):

    # skip to STARTCHAR
    while 1:
        s = f.readline()
        if not s:
            return None
        if s[:9] == "STARTCHAR":
            break
    id = string.strip(s[9:])

    # load symbol properties
    props = {}
    while 1:
        s = f.readline()
        if not s or s[:6] == "BITMAP":
            break
        i = string.find(s, " ")
        props[s[:i]] = s[i+1:-1]

    # load bitmap
    bitmap = []
    while 1:
        s = f.readline()
        if not s or s[:7] == "ENDCHAR":
            break
        bitmap.append(s[:-1])
    bitmap = string.join(bitmap, "")

    [x, y, l, d] = map(int, string.split(props["BBX"]))
    [dx, dy] = map(int, string.split(props["DWIDTH"]))

    bbox = (dx, dy), (l, -d-y, x+l, -d), (0, 0, x, y)

    try:
        im = Image.fromstring("1", (x, y), bitmap, "hex", "1")
    except ValueError:
        # deal with zero-width characters
        im = Image.new("1", (x, y))

    return id, int(props["ENCODING"]), bbox, im

def getcolor(color, mode):
    # same as getrgb, but converts the result to the given mode
    color = getrgb(color)
    if mode == "RGB":
        return color
    if mode == "RGBA":
        r, g, b = color
        return r, g, b, 255
    if Image.getmodebase(mode) == "L":
        r, g, b = color
        return (r * 299 + g * 587 + b * 114) / 1000
    return color