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https://github.com/Febbweiss/mopidy-touchscreen.git
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75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
import random
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change_speed = 2
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class DynamicBackground():
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def __init__(self):
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self.current = get_valid_color()
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self.target = get_valid_color()
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self.auto_mode = True
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self.target_current_same = False
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def draw_background(self, surfaces):
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if not self.target_current_same:
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for x in range(0, 3):
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if abs(self.current[x]-self.target[x]) < change_speed:
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self.current[x] = self.target[x]
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self.target_current_same = True
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else:
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self.target_current_same = False
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if self.current[x] > self.target[x]:
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self.current[x] -= change_speed
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elif self.current[x] < self.target[x]:
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self.current[x] += change_speed
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if self.auto_mode and self.target_current_same:
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self.target = get_valid_color()
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self.target_current_same = False
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for surface in surfaces:
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surface.fill(self.current)
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def set_target_color(self, color):
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if color is not None:
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self.auto_mode = False
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self.target_current_same = False
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self.target = get_similar_valid_color(color)
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else:
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self.auto_mode = True
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self.target = get_valid_color()
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self.target_current_same = False
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# It will return the same color if sum is less than 510
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# Otherwise a darker color will be returned
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# White text should be seen ok with this background color
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def get_similar_valid_color(color):
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sum = color[0] + color[1] + color[2]
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new_color = [0, 0, 0]
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if sum > 510:
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rest = (sum - 510)/3 + 1
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for x in range(0, 3):
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new_color[x] = color[x] - rest
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return new_color
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else:
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return color
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# Returns an array with 3 integers in range of 0-255
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# The sum of the three integers will be lower than 255*2
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# (510) to avoid very bright colors
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# White text should be seen ok with this background color
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def get_valid_color():
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color = [0, 0, 0]
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total = 0
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for i in range(0, 3):
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color[i] = random.randint(0, 255)
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total += color[i]
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extra = total - 510
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if extra > 0:
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i = random.randint(0, 2)
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color[i] -= extra
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return color
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