//load external library.
import interfascia.*;
//load accessory files. 
PImage grid;
PImage clear;
PFont lane;
//define non-local variables.
//load draw tool.
boolean animation = false;
//load pen attributes.
int penColor;
float penWeight; //= 5; 
//load color chooser.
color currentPick;
//load color randomizer (r-g-b).
float modeAr;
float modeAg;
float modeAb;
//load slo-mode speed trap.
float speed = 30;
boolean click = true;
boolean speedVar = false;
//load mode buttons from interfascia library.
GUIController c;
IFButton b1, b2, b3, b4;
IFLabel l;

void setup()
{
  size(600,450);
  if(animation == false)
    animation = true;
  //set initial defaults
  currentPick = color(219,88,0);
  penWeight = 5;
  modeAr = 219;
  modeAg = 88;
  modeAb = 0;
  //set 
  frameRate(speed);
  //define mode buttons.
  c = new GUIController(this);
 
  b1 = new IFButton("a", 542,250, 40,20);
  b2 = new IFButton("b", 542,295, 40,20);
  b3 = new IFButton("c", 542,340, 40,20);
  b4 = new IFButton("d", 542,385, 40,20);

  b1.addActionListener(this);
  b2.addActionListener(this);
  b3.addActionListener(this);
  b4.addActionListener(this);

  c.add(b1);
  c.add(b2);
  c.add(b3);
  c.add(b4);

  //eyedropper-ish palette.
  stroke(1);
  noFill();
  rect(0,375, 75,75);
}
void draw()
{
  //define left-hand menu.
  //color selectors.
  stroke(0);
  strokeWeight(1);
  fill(1); //if I use "0", it picks up the last selected color. Maybe a quirk?
  //ALT: fill(random(255),random(255),random(255));
  rect(0,0, 75,75);
  fill(76);
  rect(0,75, 75,75);
  fill(153);
  rect(0,150, 75,75);
  fill(255);
  rect(0,225, 75,75);
  fill(modeAr, modeAg, modeAb); //random colorpicker; controlled by "a" button.
  rect(0,300, 75,75);
  noStroke();
  //define right-hand menu.
  stroke(1);
  fill(255);
  rect(width-76,0, 75,224);
  rect(width-76,224, 75,225);
  lane = loadFont("LaneNarrow48.vlw");
  fill(0);
  textFont(lane); 
  textSize(17);
  text("s t r o k e", 534,215);
  text("m o d e", 537,440);
  //determined by controllers. 
  stroke(penColor);
  //stroke properties toolbar.
  smooth();
  stroke(1);
  strokeWeight(5);
  noFill();
  ellipse(560,40, 10,15);
  strokeWeight(5);
  rect(555,78, 10,15);
  fill(0);
  strokeWeight(6);
  ellipse(560,130, 8,8);
  noStroke();
  rect(554,165, 12,12);
  //stroke weight adjuster.
  if (mouseY <= 325) 
  {  
    if (mouseY < 0)
    {
      mouseY = 500;
    }
    float pctY = float(mouseY) / float(width);
    float lerpedY = lerp( 1, 30, pctY );
    strokeWeight (lerpedY);
  }
  //strokeWeight(penWeight);
  stroke(penColor);
  //draw control
  if (mousePressed)
    line(mouseX,mouseY,pmouseX,pmouseY);  
}

void mousePressed() //palette selection clicker.
{
//left-hand selective tool.
  //color picker.
  if(mouseX < 75)
  {
    if (get(mouseX,mouseY) != color(0))
    {
      penColor = get(mouseX,mouseY);
      stroke(penColor); 
    }
  }
//right-hand selective tool.
  //stroke properties.
  if(mouseX > 550 && mouseX < 580 && mouseY >35 && mouseY < 60)
  {
    strokeJoin(ROUND);
  }
  if(mouseX > 550 && mouseX < 580 && mouseY >75 && mouseY < 95)
  {
    strokeJoin(SQUARE);
  }
  if(mouseX > 555 && mouseX < 565 && mouseY >125 && mouseY < 140)
  {
    strokeCap(ROUND);
  }
  if(mouseX > 555 && mouseX < 565 && mouseY >160 && mouseY < 175)
  {
    strokeCap(PROJECT);
  }
  //enter/exit slo-mode if click in (or too close to) button "c" 
  if(mouseX > 542 && mouseX < 582 && mouseY > 3 && mouseY < 350)
  {
    click = !click;
    speedVar = true;
  }
  if(click == true)
  {
    frameRate(30);
    redraw();
  }
  else
  {
    if(speedVar == true)
    {
      speed = 2;
      speedVar = false;
    }
    frameRate(speed);
  }
}

void actionPerformed (GUIEvent e) //interfascia buttons. b1=mode "a"; b2=mode "b", et alia.
{
  if (e.getSource() == b1) //change available color
  {
    modeAr = random(255);
    modeAg = random(255);
    modeAb = random(255);
    frameRate(60);
  } 
  else if (e.getSource() == b2) //clear background with randomized color.
  {
    noStroke();
    fill(random(255),random(255),random(255));
    rect(75,0, 450,500);
    frameRate(60);
  }
  else if (e.getSource() == b3) //dummy button for speed trap.
  {
  } 
  else if (e.getSource() == b4) //dummy button to mess with user.
  {
  }  
}