sugar-toolkit-gtk3/sugar/graphics/color.py

51 lines
1.4 KiB
Python

_system_colors = {
'toolbar-background' : '#414141',
'frame-border' : '#D1D1D2'
}
def _html_to_rgb(html_color):
""" #RRGGBB -> (r, g, b) tuple (in float format) """
html_color = html_color.strip()
if html_color[0] == '#':
html_color = html_color[1:]
if len(html_color) != 6:
raise ValueError, "input #%s is not in #RRGGBB format" % html_color
r, g, b = html_color[:2], html_color[2:4], html_color[4:]
r, g, b = [int(n, 16) for n in (r, g, b)]
r, g, b = (r / 255.0, g / 255.0, b / 255.0)
return (r, g, b)
def _rgba_to_int(r, g, b, a):
color = int(a * 255) + (int(b * 255) << 8) + \
(int(g * 255) << 16) + (int(r * 255) << 24)
return color
class RGBColor(object):
def __init__(self, r, g, b, a=1.0):
self._r = r
self._g = g
self._b = b
self._a = a
def get_rgba(self):
return (self._r, self._g, self._b, self._a)
def get_int(self):
return _rgba_to_int(self._r, self._g, self._b, self._a)
class SystemColor(RGBColor):
def __init__(self, color_id):
rgb = _html_to_rgb(_system_colors[color_id])
RGBColor.__init__(self, *rgb)
class Color(object):
RED = RGBColor(1.0, 0.0, 0.0)
GREEN = RGBColor(0.0, 1.0, 0.0)
BLUE = RGBColor(0.0, 0.0, 1.0)
TOOLBAR_BACKGROUND = SystemColor('toolbar-background')
FRAME_BORDER = SystemColor('frame-border')