# Led System Turn on/off

**URL:** https://discourse.processing.org/t/led-system-turn-on-off/12662
**Category:** Electronics (Arduino, etc.)
**Created:** [July 11, 2019, 12:22pm UTC](https://discourse.processing.org/t/led-system-turn-on-off/12662 "2019-07-11T12:22:54Z")
**Posts on this page:** 1
**Showing post:** 3

<div class="post-metadata">

### Author: ![kll](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kll/32/964_2.png) [@kll](https://discourse.processing.org/u/kll)
#### Post date: [July 12, 2019, 11:59am UTC](https://discourse.processing.org/t/led-system-turn-on-off/12662/3 "2019-07-12T11:59:32Z")

</div>

ok, i not know your project status,  
but i think it’s worth to have a easy  
TOGGLE button code ready.

```auto
// Basic Button Example / TOGGLE Version
// _________________________________________________________________ SETUP
void setup() {
  size(200, 200);
}

// _________________________________________________________________ DRAW
void draw() {
  background(200, 200, 0);
  myButton();
}

// _________________________________________________________________ MOUSE pressed function
void mousePressed() {
  left_mouse_click_button();
}

// _________________________________________________________________ YOUR code if button pressed
void user_on_button_click() {
  bV = ! bV; // TOGGLE
  println("button PV "+bV);
  println("?what you want me to do now?");
}

// _________________________________________________________________ BUTTON ?TAB?
int bx=20, by=170, bw=60, bh=20; // button rectangle settings X,Y,W,H
int bts=15; // button text size
color bs = color(0, 50, 150); // stroke 
color bf0 = color(0, 0, 200); // PV fill STOP 
color bf1 = color(0, 200, 0); // PV fill RUN
color cshow = bf0; // selected PV color
color bt = color(200, 200, 0); // text
boolean benable=true; // false; // use button?
boolean bV = false; // true; // button status                       
String bT0 = "START"; // SP Text
String bT1 = "STOP"; // SP Text
String tshow = ""; // selected SP text temp

void myButton() {
  if (benable) {
    push();
    stroke(bs);
    strokeWeight(2);
    cshow = ( bV) ? bf1 : bf0;
    fill(cshow); // same if ( bV ) fill(bf1); else fill(bf0);
    rect(bx, by, bw, bh);
    fill(bt);
    textSize(bts);
    textAlign(CENTER);
    tshow = ( bV ) ? bT1 : bT0; // same if ( bV ) tshow = bT1; else tshow = bT0;
    text(tshow, bx+bw/2, by+bh/2+bts/2);
    pop();
  }
}

// _________________________________________________________________ mouse click left on button
void left_mouse_click_button() {
  if (mouseButton == LEFT && overRect(bx, by, bw, bh) && benable ) user_on_button_click();
}

// _________________________________________________________________ mouse over rectangle yes/no
boolean overRect(int rx, int ry, int rwidth, int rheight) {
  if (mouseX >= rx && mouseX <= rx+rwidth && 
    mouseY >= ry && mouseY <= ry+rheight) return true;
  return false;
}

/*
// Basic Button Example
 // _________________________________________________________________ SETUP
 void setup() {
 size(200, 200);
 }
 
 // _________________________________________________________________ DRAW
 void draw() {
 background(200, 200, 0);
 myButton();
 }
 
 // _________________________________________________________________ MOUSE pressed function
 void mousePressed() {
 left_mouse_click_button();
 }
 
 // _________________________________________________________________ YOUR code if button pressed
 void user_on_button_click() {
 println("what you want me to do now?");
 }
 
 // _________________________________________________________________ BUTTON ?TAB?
 int bx=20, by=170, bw=60, bh=20; // button rectangle settings X,Y,W,H
 color bs = color(0, 50, 150); // stroke 
 color bf = color(0, 200, 200); // fill
 color bt = color(0, 0, 200); // text
 boolean benable=true; // false; // use button?
 String bT = "click me"; // Text
 
 void myButton() {
 if (benable) {
 push();
 stroke(bs);
 strokeWeight(2);
 fill(bf);
 rect(bx, by, bw, bh);
 fill(bt);
 text(bT, bx+5, by+15);
 pop();
 }
 }
 
 // _________________________________________________________________ mouse click left on button
 void left_mouse_click_button() {
 if (mouseButton == LEFT && overRect(bx, by, bw, bh) && benable ) user_on_button_click();
 }
 
 // _________________________________________________________________ mouse over rectangle yes/no
 boolean overRect(int rx, int ry, int rwidth, int rheight) {
 if (mouseX >= rx && mouseX <= rx+rwidth && 
 mouseY >= ry && mouseY <= ry+rheight) return true;
 return false;
 }
 
 */

```

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