Input

You can detect if user pressed keyboard or mouse.

Keyboard

Property

• keyboard.key : the actual key, if you pressed e, this will be e
• keyboard.keyCode : the key's code, if you pressed e, this will be 69
• keyboard.keyPressed : True if any key is pressed and False if no keys are pressed

Constants

• BACKSPACE : backspace key code
• TAB : tab key code
• ENTER : enter key code
• RETURN : return key code
• ESC : esc key code
• DELETE : delete key code
• SHIFT : shift key code
• CONTROL : control key code
• ALT : alt key code
• CAPSLK : caps lock key code
• PGUP : page up key code
• PGDN : page down key code
• END : end key code
• HOME : home key code
• LEFT : left arrow key code
• UP : up arrow key code
• RIGHT : right arrow key code
• DOWN : down arrow key code
• F1, F2 ... F12 : F1 ~ F12 key code
• NUMLK : number lock key code
• INSERT : insert key code

Events

• keyPressed() : If any key is pressed, this function will be called
• keyReleased() : If any key is released, this function will be called
• keyTyped() : If any key is typed, this function will be called

Example

Move a rectangle when left or right arrow key is pressed.

from processing import *

rectX = 0

def setup():
    size(500, 400)

def draw():
    background(0, 0, 0)
    rect(rectX, 100, 50, 10)

def keyPressed():
    global rectX
    if keyboard.keyCode == LEFT:
        rectX -= 5
    elif keyboard.keyCode == RIGHT:
        rectX += 5

run()

Mouse

Property

• mouse.x : current horizontal coordinate of the mouse
• mouse.y : current vertical coordinate of the mouse
• mouse.px : the previous horizontal coordinate of the mouse
• mouse.py : the previous vertical coordinate of the mouse
• mouse.pressed : if mouse is pressed
• mouse.button : which mouse button is pressed, left mouse button is 37, right mouse button is 39

Functions

• mouseClicked() : will be called when click clicked
• mouseDragged() : will be called when drag mouse
• mousePressed() : will be called when press mouse
• mouseMoved() : will be called when move mouse
• mouseReleased() : will be called when release mouse
• mouseOut() : will be called when mouse pointer leaves canvas
• mouseOver() : will be called when the mouse pointer moves over canvas

Example

from processing import *

def setup():
    size(500, 400)

def draw():
    background(0)

def mousePressed():
    print "pressed at:", mouse.x, mouse.y
    # left button is 37, right button is 39
    print "mouse button:", mouse.button

def mouseMoved():
    info = "Mouse moved at (%s, %s)" % (mouse.x, mouse.y)
    text(info, mouse.x, mouse.y)

def mouseReleased():
    text("Mouse released", 10, 10)


run()

Reference

• Processing.org