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Diffstat (limited to 'PIL/ImageDraw.py')
| -rw-r--r-- | PIL/ImageDraw.py | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/PIL/ImageDraw.py b/PIL/ImageDraw.py deleted file mode 100644 index 7f9107b..0000000 --- a/PIL/ImageDraw.py +++ /dev/null @@ -1,378 +0,0 @@ -# -# The Python Imaging Library -# $Id: ImageDraw.py 2817 2006-10-07 15:34:03Z fredrik $ -# -# 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 |