1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
"""
This module implements a rainbow effect renderer.
"""
from asciimatics.renderers.base import StaticRenderer
class Rainbow(StaticRenderer):
"""
Chained renderer to add rainbow colours to output of another renderer.
The embedded rendered must not use multi-colour mode (i.e. ${c,a}
mark-ups) as these will be converted to explicit text by this renderer.
"""
# Colour palette when limited to 16 colours (8 dim and 8 bright).
_16_palette = [1, 1, 3, 3, 2, 2, 6, 6, 4, 4, 5, 5]
# Colour palette for 256 colour xterm mode.
_256_palette = [196, 202, 208, 214, 220, 226, 154, 118, 82, 46, 47, 48, 49, 50, 51,
45, 39, 33, 27, 21, 57, 93, 129, 201, 200, 199, 198, 197]
def __init__(self, screen, renderer):
"""
:param screen: The screen object for this renderer.
:param renderer: The renderer to wrap.
"""
super().__init__()
palette = self._256_palette if screen.colours > 16 else self._16_palette
for image in renderer.images:
new_image = ""
for y, line in enumerate(image):
for x, c in enumerate(line):
colour = (x + y) % len(palette)
new_image += '${%d,1}%s' % (palette[colour], c)
if y < len(image) - 1:
new_image += "\n"
self._images.append(new_image)
|
