Beispiel #1
0
def gridLums(c1,c2):
  cG = 5.1
  global lumlib
  (c1,c2) = sorted((str(c1),str(c2)))
  try:
    nratio = float(lumlib[str(c1)][str(c2)])
  except KeyError:
    (r1,g1,b1) = color.unStringColor(c1)
    (r2,g2,b2) = color.unStringColor(c2)
    l1 = color.lum(r1,g1,b1)
    l2 = color.lum(r2,g2,b2)
    nratio = color.lumrat(l1,l2)
    if nratio >= cG: color.storeLumRatios(r1,g1,b1,r2,g2,b2,nratio)
  return nratio
Beispiel #2
0
def compileColors(c,minr,ming,minb,maxr,maxg,maxb,inc,sizeType,**kwargs):
  """Given all inputs, compiles a list of tuples containing colors that work as
  backgrounds to the chosen color. Returns this list.
  Inputs:
    A color code (string)
    Six ints (ming R/G/B, max R/G/B)
    An increment (int)
    a size tyoe for setting the minimum contrasts (char)
    Keyword args:
      method: 0 - Legacy method C/B, 1 - WCAG, 2 - WCAG/sortbylum, 3 - Unfiltered
      hue requirement (int):
        0: all hues
        1: reddish hues
        2: greenish hues
        3: yellowish hues
        4: bluish hues
        5: magentine hues
        6: cyanate hues
        7: grays
  """
  global colors
  hue = '0'
  method = '1'
  goOn = False
  cM = 5.0 # Minimum contrast ratio
  cG = 7.0 # Good contrast ratio
  cD = 0 # How many colors will we display?
  colorMatches = 0 # How many accessible colors will we find?
  rr = 0 # We'll break it down into red,
  gg = 0                               # green,
  bb = 0                                      # and blue.
  colors = []
  for key in kwargs:
    if key == "method": method = str(kwargs[key])
    if key == "hue": hue = str(kwargs[key])

  c = color.valColor(c)
  if c is None:
    say(0,"Invalid color!\n")
    goOn = False
  else:
    goOn = True
    (minr,ming,minb,maxr,maxg,maxb) = color.valMinMax(minr,ming,minb,maxr,maxg,maxb)
    # Based on the character 'sizeType'...
    (cM,cG) = color.contLevels(sizeType)
  say(0,"...")
  if goOn:
    (rr,gg,bb) = color.unStringColor(c)
    if method == '2': inc = 51 # Method 2 always displays every color, so we'll only do it with the WebSafe colorspace.
    if inc == 1: inc = color.sanityCheck(rr,gg,bb) #  If we're testing all colors, decide if this is something a sane person would do.
    say(1,"Using increments of {0}...".format(inc))
    if hue != '0': # Looking at hue...
      say(1,"limited to ")
      hues = ""
      if hue == '1': hues = "reddish hues."
      elif hue == '2': hues = "greenish hues."
      elif hue == '3': hues = "yellowish hues."
      elif hue == '4': hues = "bluish hues."
      elif hue == '5': hues = "magentine hues."
      elif hue == '6': hues = "cyanate hues."
      elif hue == '7': hues = "grays."
      else: hues = "all hues."
      say(0,hues + "\n")
    say(0," Color range used is r:{0}-{1}/g:{2}-{3}/b:{4}-{5}.\n".format(minr,maxr - 1,ming,maxg - 1,minb,maxb - 1)) # Tell user about requested (or corrected) color ranges.
    goOn = False; # Don't continue... unless the next test passes.
#    say(0,"<p class=\"yourcolor\" style=\"border-color: #{0};\">Color entered: R: {1} G: {2} B: {3} (#{0})</p>".format(c, rr,gg,bb) # Remind user of the given color. It's been so long, I almost forgot.
# Replace below with GTK fanciness to show colored stuff.
    say(0,"Color entered: R: {1} G: {2} B: {3} (#{0})\n".format(c, rr,gg,bb)) # Remind user of the given color. It's been so long, I almost forgot.
    (colorbrightness,cont0,contf,givenLum) = color.colorVitals(rr,gg,bb)
    say(1,"Color has a brightness of %s" % colorbrightness)
    say(1,"and a luminance of {0:.2%}.".format(givenLum))
    say(0,"Its contrast with black is %s, and its contrast with white is %s.\n" % (cont0,contf)) # The user might be interested in this information. Tell the user what we've learned.
    (rloop,gloop,bloop) = color.getLoops(minr,ming,minb,maxr,maxg,maxb,inc)
    for nr in rloop: #Red loop: Start at minr, stop at maxr, increment by inc every time around.
      for ng in gloop: #Green loop: Start at ming, stop at maxg, increment by inc every time around.
        for nb in bloop: #Blue loop: Start at minb, stop at maxb, increment by inc every time around.
          if color.chkHue(nr,ng,nb,int(hue)): # Is the color we're testing of the proper hue type?
            nratio = 0.0
            try:
              nc = "%02X%02X%02X" % (nr,ng,nb)
              (c1,c2) = sorted((str(nc),str(c)))
              nratio = float(lumlib[str(c1)][str(c2)])
              print "!",
            except KeyError:
              print "?",
              nLum = color.lum(nr,ng,nb) # Luminance of the tested color is what?
              nratio = color.lumrat(givenLum,nLum) # Ratio of tested luminance vs. given color's luminance is what?
            if method == '0': # Use the old contrast/Brightness method (deprecated)
              nBright = color.getBrightness(nr,ng,nb) # Check out the brightness of this color.
              brightDiff = color.fabs(nBright - colorBrightness) # How different is it?
              if brightDiff > 125: # diff in bright should be greater than 125
                contrast = color.getContrast(rr,gg,bb,nr,ng,nb) # Oh, check the contrast between these two colors
                if contrast > 500: # contrast should be greater than 500
                  colors.append(color.storeGoodColors(nr,ng,nb,nratio))
                  cD += 1; colorMatches += 1
            elif nratio >= cM or method == '2': # Is the color match good enough to display?
              colors.append(color.storeGoodColors(nr,ng,nb,nratio))
              color.storeLumRatios(rr,gg,bb,nr,ng,nb,nratio)
              cD += 1
              if nratio >= cG: # Is the color match a preferable match?
                colorMatches += 1
          if cD >= MAXMATCHES: # If we have a lot of colors to display...
            bloop = []
            say(0,"Maximum matches (" + str(MAXMATCHES) + ") reached. Aborting process to save CPU resources!\n") # Tell the user that there were too many.
            break
          if colorMatches >= MAXSORTED and method == '3': # If we have a lot of colors to sort...
            bloop = []
            say(0,"Maximum sorted matches (" + str(MAXSORTED) + ") reached. Aborting process to prevent browser spinning!\n")
            break
  print ".",
  return colors