def emphasize(cls, color, value=10):
'''
@param: color QColor
@param: value int
@return: QColor
'''
ret = QColor()
h, s, v, a = color.getHsv()
if v < 75 + value:
ret.setHsv(h, s, cls.CLAMP(85 + value, 85, 255), a)
return ret
if v > 200:
if s > 30:
h -= 5
if h < 0:
h = 360 + h
s = (s << 3) // 9
v += value
ret.setHsv(h, cls.CLAMP(s, 30, 255), cls.CLAMP(v, 0, 255), a)
return ret
if v > 230:
ret.setHsv(h, s, cls.CLAMP(v - value, 0, 255), a)
return ret
if v > 128:
ret.setHsv(h, s, cls.CLAMP(v + value, 0, 255), a)
else:
ret.setHsv(h, s, cls.CLAMP(v - value, 0, 255), a)
return ret
def setBaseColor(self, newColor):
'''
@brief: Sets the base color and makes sure all top level widgets are updated
@note: We try to ensure that the actual color used are within
reasonable bounds while generating the actual baseColor
from the import user request.
@param: color QColor
'''
self._requestedBaseColor = newColor
color = QColor()
color.setHsv(newColor.hue(),
newColor.saturation() * 0.7, 64 + newColor.value() / 3)
if color.isValid() and color != self._baseColor:
self._baseColor = color
for widget in QApplication.topLevelWidgets():
widget.update()
def light(cls, color, value):
'''
@param: color QColor
@param: value int
@return: QColor
'''
h, s, v, a = color.getHsv()
ret = QColor()
if v < 255 - value:
ret.setHsv(h, s, cls.CLAMP(v + value, 0, 255),
a) # value could be negative
return ret
# psychovisual uplightning, i.e. shift hue and lower saturation
if s > 30:
h -= (value * 5 / 20)
if h < 0:
h = 400 + h
s = cls.CLAMP((s << 3) / 9, 30, 255)
ret.setHsv(h, s, 255, a)
return ret
else: # hue shifting has no sense, half saturation (btw, white won't get brighter)
ret.setHsv(h, s >> 1, 255, a)
return ret
