"""
A package that allows for simulating the display without the need of a physical
display. It relies on the pygame-package.
The simulator can be used in the following way.
Creating a display with specific dimensions.
>>> import flipdotsim
>>> fds = flipdotsim.FlipDotSim(width=28, height=13)
Set two pixels at the top left to be turned on.
>>> fds.px(0,0, True)
>>> fds.px(0,1, True)
Actually turn on or off all pixels.
>>> fds.show()
"""
import pygame
import displayprovider
YELLOWDOT_FILE = "ressources/y.jpg"
BLACKDOT_FILE = "ressources/b.jpg"
IMG_WIDTH_HEIGHT = 20 # pixel on each side
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class FlipDotSim(displayprovider.DisplayBase):
'Simulator class that shows the display in a pygame GUI.'
def __init__(self, width=28, height=13, fps=30):
super().__init__(width, height)
pygame.init()
pygame.display.set_caption("FlipDot Simulator")
self.screen = pygame.display.set_mode(
(self.width*IMG_WIDTH_HEIGHT, self.height*IMG_WIDTH_HEIGHT))
self.y = pygame.image.load(YELLOWDOT_FILE).convert()
self.b = pygame.image.load(BLACKDOT_FILE).convert()
self.clock = pygame.time.Clock()
self.fps = fps
self.clear()
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def set(self, x, y):
self.screen.blit(self.y, (x*IMG_WIDTH_HEIGHT, y*IMG_WIDTH_HEIGHT))
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def reset(self, x, y):
self.screen.blit(self.b, (x*IMG_WIDTH_HEIGHT, y*IMG_WIDTH_HEIGHT))
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def px(self, x, y, val):
"""Set a pixel to on or off at (X|Y). The dot will not be displayed
immediately."""
if val:
self.set(x, y)
else:
self.reset(x, y)
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def show(self):
"""Show the current state of all pixels on the display."""
# empty the event queue to prevent it from being full
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit(0)
pygame.display.flip()
self.clock.tick(self.fps)
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def clear(self, invert=False):
for x in range(self.width):
for y in range(self.height):
if invert:
self.set(x, y)
else:
self.reset(x, y)
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def close(self):
'Deinitialize pygame and close open windows.'
pygame.quit()
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def led(self, on_off):
'does notging'
# TODO led support for simulator
pass
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def test_flipdot_sim():
import time
fdd = FlipDotSim(width=3, height=2)
fdd.px(0, 0, True)
fdd.px(1, 1, True)
fdd.show()
time.sleep(0.3)
fdd.reset(0, 0)
fdd.set(1, 0)
fdd.show()
time.sleep(0.3)
fdd.clear()
fdd.show()
time.sleep(0.3)
fdd.clear(invert=True)
fdd.show()
time.sleep(0.3)
fdd.close()
if __name__ == '__main__':
import flipdotfont
import configuration
fds = FlipDotSim(
width=configuration.WIDTH,
height=configuration.HEIGHT,
fps=configuration.simulator["fps"])
fdw = flipdotfont.TextScroller(fds)
fdw.scrolltext('Test 12345!', flipdotfont.big_font(), 1)