00001 # Copyright (c) 2011, Dirk Thomas, TU Darmstadt 00002 # All rights reserved. 00003 # 00004 # Redistribution and use in source and binary forms, with or without 00005 # modification, are permitted provided that the following conditions 00006 # are met: 00007 # 00008 # * Redistributions of source code must retain the above copyright 00009 # notice, this list of conditions and the following disclaimer. 00010 # * Redistributions in binary form must reproduce the above 00011 # copyright notice, this list of conditions and the following 00012 # disclaimer in the documentation and/or other materials provided 00013 # with the distribution. 00014 # * Neither the name of the TU Darmstadt nor the names of its 00015 # contributors may be used to endorse or promote products derived 00016 # from this software without specific prior written permission. 00017 # 00018 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00019 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00020 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00021 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00022 # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00023 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00024 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00025 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00026 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00027 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00028 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00029 # POSSIBILITY OF SUCH DAMAGE. 00030 import colorsys 00031 00032 00033 def get_color_for_string(name): 00034 hue = float(name.__hash__() % 0xFFFFFFFFFFFF) / 0xFFFFFFFFFFFF 00035 # choose colors with high saturation and value 00036 (r, g, b) = colorsys.hsv_to_rgb(hue, 1, 0.8) 00037 # convert floats into hexadecimal 00038 (r, g, b) = (int(r * 0xFF), int(g * 0xFF), int(b * 0xFF)) 00039 # build a hex string like #a3bbc0 00040 code = '#%s%s%s' % (hex(r)[-2:], hex(g)[-2:], hex(b)[-2:]) 00041 # single digit hexes yield 'x4'' 00042 return code.replace('x', '0')