Files
mopidy-touchscreen/mopidy_touchscreen/graphic_utils/dynamic_background.py
Ander 9102cd9e91 Merge branch 'background-cover' into develop
Conflicts:
	mopidy_touchscreen/graphic_utils/dynamic_background.py
	mopidy_touchscreen/graphic_utils/screen_objects.py
	mopidy_touchscreen/screen_manager.py
	mopidy_touchscreen/screens/main_screen.py
2015-04-09 01:28:38 +02:00

110 lines
3.3 KiB
Python

import random
import pygame
change_speed = 2
class DynamicBackground():
def __init__(self, size):
self.current = get_valid_color()
self.target = get_valid_color()
self.auto_mode = True
self.image_loaded = False
self.size = size
self.surface = pygame.Surface(self.size).convert()
self.target_current_same = False
def draw_background(self):
if self.image_loaded:
return self.surface.copy()
else:
if not self.target_current_same:
for x in range(0, 3):
if abs(self.current[x]-self.target[x]) < change_speed:
self.current[x] = self.target[x]
self.target_current_same = True
else:
self.target_current_same = False
if self.current[x] > self.target[x]:
self.current[x] -= change_speed
elif self.current[x] < self.target[x]:
self.current[x] += change_speed
if self.auto_mode and self.target_current_same:
self.target = get_valid_color()
self.target_current_same = False
self.surface.fill(self.current)
return self.surface.copy()
def set_target_color(self, color, image):
if color is not None:
self.auto_mode = False
self.target_current_same = False
self.target = get_similar_valid_color(color)
else:
self.auto_mode = True
self.target = get_valid_color()
self.target_current_same = False
if image is not None:
image_size = get_aspect_scale_size(image, self.size)
target = pygame.transform.smoothscale(image, image_size)
target.set_alpha(150)
self.image_loaded = True
self.surface.fill((0, 0, 0))
pos = ((self.size[0] - image_size[0])/2,
(self.size[1] - image_size[1])/2)
self.surface.blit(target, pos)
else:
self.image_loaded = False
# It will return the same color if sum is less than 510
# Otherwise a darker color will be returned
# White text should be seen ok with this background color
def get_similar_valid_color(color):
sum = color[0] + color[1] + color[2]
new_color = [0, 0, 0]
if sum > 510:
rest = (sum - 510)/3 + 1
for x in range(0, 3):
new_color[x] = color[x] - rest
return new_color
else:
return color
# Returns an array with 3 integers in range of 0-255
# The sum of the three integers will be lower than 255*2
# (510) to avoid very bright colors
# White text should be seen ok with this background color
def get_valid_color():
color = [0, 0, 0]
total = 0
for i in range(0, 3):
color[i] = random.randint(0, 255)
total += color[i]
extra = total - 510
if extra > 0:
i = random.randint(0, 2)
color[i] -= extra
return color
def get_aspect_scale_size(img, (bx, by)):
size = img.get_size()
aspect_x = bx / float(size[0])
aspect_y = by / float(size[1])
if aspect_x > aspect_y:
aspect = aspect_x
else:
aspect = aspect_y
new_size = (int(aspect*size[0]), int(aspect*size[1]))
return new_size