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inputs.py
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inputs.py
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from javax.swing import JOptionPane
"""
This will hpefully switch between Arduino (Firmata) variable input and
nice sliders based on Peter Farell's Sliders htts://twitter.com/hackingmath
https://github.com/hackingmath/python-sliders http://farrellpolymath.com/
"""
class Input:
def __init__(self, Arduino=None):
if Arduino:
self.select_source(Arduino)
else:
self.source = 0
if self.source > 0:
self.arduino = Arduino(this, Arduino.list()[self.source], 57600)
else:
# start, end, default
A = Slider(0, 1023, 32)
B = Slider(0, 1023, 32)
C = Slider(0, 1023, 32)
D = Slider(0, 1023, 32)
A.position(40, height - 70)
B.position(40, height - 30)
C.position(width - 140, height - 70)
D.position(width - 140, height - 30)
self.sliders = {1: A, 2: B, 3: C, 4: D}
def analog(self, pin):
if self.source:
return self.arduino.analogRead(pin)
else:
return self.sliders[pin].val
def update(self):
if not self.source:
for pin, slider in self.sliders.iteritems():
slider.update()
def keyPressed(self):
if key == 'a':
self.sliders[1].down = True
if key == 'd':
self.sliders[1].up = True
if key == 's':
self.sliders[2].down = True
if key == 'w':
self.sliders[2].up = True
if keyCode == LEFT:
self.sliders[3].down = True
if keyCode == RIGHT:
self.sliders[3].up = True
if keyCode == DOWN:
self.sliders[4].down = True
if keyCode == UP:
self.sliders[4].up = True
def keyReleased(self):
if key == 'a':
self.sliders[1].down = False
if key == 'd':
self.sliders[1].up = False
if key == 's':
self.sliders[2].down = False
if key == 'w':
self.sliders[2].up = False
if keyCode == LEFT:
self.sliders[3].down = False
if keyCode == RIGHT:
self.sliders[3].up = False
if keyCode == DOWN:
self.sliders[4].down = False
if keyCode == UP:
self.sliders[4].up = False
def digital(self, pin):
space_pressed = keyPressed and key == ' '
if self.source:
if pin == 13:
return self.arduino.digitalRead(13) or space_pressed
else:
return arduino.digitalRead(pin)
else:
return space_pressed
def select_source(self, Arduino):
# Input.Arduino = Arduino # to make available on this module
port_list = [str(num) + ": " + port for num, port
in enumerate(Arduino.list())]
if not port_list:
port_list.append(None)
self.source = option_pane("O seu Arduino está conectado?",
"Escolha a porta ou pressione Cancel\npara usar 'sliders':",
port_list,
-1) # index for default option
self.help()
def help(self):
if self.source:
message = """ Teclas:
'h' para esta ajuda
'p' para salvar uma imagem
'g' para salvar um GIF
Tombe a lousa para lousa para limpar o desenho!"""
else:
message = """ Teclas:
'h' para esta ajuda
'p' para salvar uma imagem
'g' para salvar um GIF
'a' (-) ou 'd' (+) para o slider 1
's' (-) ou 'w' (+) para o slider 2
←(-) ou → (+) para o slider 3
↓ (-) ou ↑ (+) para o slider 4
[barra de espaço] para limpar o desenho"""
ok = JOptionPane.showMessageDialog(None, message)
def option_pane(title, message, options, default=None, index_only=True):
if default == None:
default = options[0]
elif index_only:
default = options[default]
selection = JOptionPane.showInputDialog(
frame,
message,
title,
JOptionPane.INFORMATION_MESSAGE,
None, # for Java null
options,
default) # must be in options, otherwise 1st is shown
if selection:
if index_only:
return options.index(selection)
else:
return selection
class Slider:
SLIDERS = []
def __init__(self, low, high, default):
'''slider has range from low to high
and is set to default'''
self.low = low
self.high = high
self.val = default
self.clicked = False
self.up, self.down = False, False
Slider.SLIDERS.append(self)
def position(self, x, y):
'''slider's position on screen'''
self.x = x
self.y = y
# the position of the rect you slide:
self.rectx = self.x + map(self.val, self.low, self.high, 0, 120)
self.recty = self.y - 10
def update(self):
'''updates the slider'''
pushStyle()
rectMode(CENTER)
# black translucid rect behind slider
fill(0, 100)
noStroke()
rect(self.x + 60, self.y, 130, 20)
# gray line behind slider
strokeWeight(4)
stroke(200)
line(self.x, self.y, self.x + 120, self.y)
# press mouse to move slider
if (self.x < mouseX < self.x + 120 and
self.y < mouseY < self.y + 20):
fill(250)
textSize(10)
text(str(int(self.val)), self.rectx, self.recty + 35)
if mousePressed:
self.rectx = mouseX
# key usage
if self.up:
self.rectx += 1
if self.down:
self.rectx -= 1
# constrain rectangle
self.rectx = constrain(self.rectx, self.x, self.x + 120)
# draw rectangle
strokeWeight(1)
fill(255)
rect(self.rectx, self.recty + 10, 10, 20)
self.val = map(self.rectx, self.x, self.x + 120, self.low, self.high)
popStyle()