ronin/scripts/modules/layer.js

function Layer(name,manager = null)
{
  Module.call(this,"#");

  this.add_method(new Method("translate",["position"]));
  this.add_method(new Method("rotate",["position","angle"]));
  this.add_method(new Method("scale",["float"]));
  this.add_method(new Method("clear",[]));
  this.add_method(new Method("rotate",["position","angle"]));
  this.add_method(new Method("mirror",["position"]));
  this.add_method(new Method("fill",["color","position","rect"]));
  
  this.add_method(new Method("rename",["text"]));

  this.name = name;
  this.rune = "#";
  this.manager = manager;
  this.element = document.createElement("canvas");
  this.element.setAttribute("id","_"+name);
  this.element.setAttribute("class","layer");
  this.depth = 0;

  this.scale = function(cmd,preview = false)
  {
    if(preview){ return; }

    var ratio = parseFloat(cmd.values());
    var data = ronin.frame.context().canvas;

    ronin.render.get_layer().clear();
    ronin.render.context().drawImage(ronin.frame.context().canvas,0,0,w,h);
    
    ronin.frame.context().drawImage(ronin.render.context().canvas, -position.x, -position.y,w,h)

    ronin.frame.context().drawImage(data,0,0,ronin.frame.size.width * ratio,ronin.frame.size.height * ratio);
  }

  this.rotate = function(params, preview = false)
  {
    if(preview){ ronin.overlay.draw_pointer(params.position()); return; }
    if(!params.position()){ return; }

    var position = params.position();
    var angle = params.angle().degrees;

    var w = ronin.frame.size.width;
    var h = ronin.frame.size.height;

    ronin.render.get_layer().clear();
    ronin.render.context().drawImage(ronin.frame.context().canvas,0,0,w,h);
    ronin.frame.active_layer.clear();

    ronin.frame.context().save();
    ronin.frame.context().translate(position.x,position.y);
    ronin.frame.context().rotate(angle*Math.PI/180);

    ronin.frame.context().drawImage(ronin.render.context().canvas, -position.x, -position.y,w,h)

    ronin.frame.context().rotate(-angle*Math.PI/180);
    ronin.frame.context().restore();
    ronin.render.get_layer().clear();

    return 1, "ok";
  }

  this.translate = function(params,preview = false)
  {
    if(preview){ return; }
    if(!params.position()){ return; }

    var data = this.data();
    this.clear();
    this.context().putImageData(data, params.position().x * 2, params.position().y * 2);
    ronin.overlay.get_layer(true).clear();

    return 1, "ok";
  }

  this.fill = function(params,preview = false)
  {
    if(!params.color()){ return 0, "Color?"; }
    if(preview){ return 0, "No Preview"; }

    var rect = params.rect() ? params.rect() : new Rect(this.element.width+"x"+this.element.height);
    var position = params.position() ? params.position() : new Position("0,0");

    this.context().beginPath();
    this.context().rect(position.x, position.y, rect.width, rect.height);
    this.context().fillStyle = params.color().hex;
    this.context().fill();
    
    return 1, "ok";
  }

  this.clear = function(params, preview = false)
  {
    if(preview){ return; }

    this.context().clearRect(0, 0, this.element.width, this.element.height);
  }

  this.resize = function(rect)
  {
    var pixels_rect   = new Rect(this.element.width+"x"+this.element.height);
    
    this.element.width = rect.width * 2;
    this.element.height = rect.height * 2;
    this.element.style.width = rect.width+"px";
    this.element.style.height = rect.height+"px";

    this.context().scale(2,2);
  }

  this.remove = function(manager)
  {
    manager.layer = null;
    ronin.frame.layers[this.name].element.outerHTML = "";
    delete ronin.frame.layers[this.name];
  }

  this.context = function()
  {
    return this.element.getContext('2d');
  }

  this.set_depth = function(depth)
  {
    this.depth = depth;
    this.element.setAttribute("z-index",depth);
  }

  this.image = function()
  {
    return this.element.toDataURL('image/png');
  }

  this.data = function()
  {
    return this.context().getImageData(0, 0, ronin.frame.size.width * 2, ronin.frame.size.height * 2);
  }

  //

  this.mouse_pointer = function(position)
  {
    return ronin.cursor.draw_pointer_arrow(position);
  }

  this.mouse_mode = function()
  {
    return "Move";
  }
  
  this.drag_from = null;

  this.mouse_down = function(position)
  {
    this.drag_from = ronin.cursor.position_in_window;
  }

  this.mouse_move = function(position)
  {
    if(this.drag_from === null){ return; }

    var offset = ronin.cursor.position_in_window.offset(this.drag_from);

    var data = this.data();
    this.clear();
    this.context().putImageData(data, offset.x * 2, offset.y * 2);

    this.drag_from = ronin.cursor.position_in_window;
  }
  
  this.mouse_up = function(position)
  {
    this.drag_from = null;
  }

  // Blink

  this.is_blinking = false;

  this.blink = function()
  {
    if(this.is_blinking == false){ return; }
    
    this.element.style.display = this.element.style.display == "none" ? "block" : "none";
  }
}