haxework/haxework/gui/View.hx

package haxework.gui;

import haxework.gui.skin.ISize;
import haxework.gui.core.SizeType;
import haxework.gui.core.HAlign;
import haxework.gui.core.VAlign;
import flash.events.Event;
import flash.display.Stage;
import haxework.gui.skin.FakeSkin;
import haxework.gui.skin.ISkin;

import flash.display.Sprite;

class View implements IView<Sprite> {

  private static var counter:Int = 0;
  public static var updater(default, null):Updater = new Updater();

  public var id(default, null):String;

  public var x(default, set):Float;
  public var y(default, set):Float;

  public var w(default, set):Float;
  public var h(default, set):Float;

  public var widthType(default, null):SizeType;
  public var heightType(default, null):SizeType;

  public var width(get, set):Float;
  public var height(get, set):Float;

  public var pWidth(default, set):Float;
  public var pHeight(default, set):Float;

  public var contentSize(default, set):Bool;

  public var hAlign(default, set):HAlign;
  public var vAlign(default, set):VAlign;

  public var leftMargin(default, set):Float;
  public var rightMargin(default, set):Float;
  public var topMargin(default, set):Float;
  public var bottomMargin(default, set):Float;
  public var margins(null, set):Float;

  public var content(default, null):Sprite;
  public var skin(default, set):ISkin<Sprite, IView<Sprite>>;

  public var parent(default, null):Null<IView<Sprite>>;

  public function new() {
    id = Type.getClassName(Type.getClass(this)) + counter++;
    content = new Sprite();
    skin = new FakeSkin();
    x = 0;
    y = 0;
    width = 100;
    height = 100;
    margins = 0;
    vAlign = VAlign.NONE;
    hAlign = HAlign.NONE;
  }

  private function currentSkin():ISkin<Sprite, IView<Sprite>> {
    return skin;
  }

  private function invalidate():Void {
    updater.invalidate(this);
  }

  private function invalidateParent():Void {
    if (parent != null)
      updater.invalidate(parent);
  }

  public function update():Void {
    content.x = x;
    content.y = y;
    if (contentSize && skin != null && Std.is(skin, ISize)) {
      var size:ISize = cast(skin, ISize);
      if (!Math.isNaN(size.width)) width = size.width;
      if (!Math.isNaN(size.height))  height = size.height;
    }
    currentSkin().draw(this);
  }

  private function set_x(value:Float):Float {
    if (x != value) {
      x = value;
      invalidate();
    }
    return x;
  }
  private function set_y(value:Float):Float {
    if (y != value) {
      y = value;
      invalidate();
    }
    return y;
  }

  private function set_w(value:Float):Float {
    if (w != value) {
      w = value;
      invalidate();
    }
    return w;
  }
  private function set_h(value:Float):Float {
    if (h != value) {
      h = value;
      invalidate();
    }
    return h;
  }

  private function get_width():Float {
    return w;
  }

  private function get_height():Float {
    return h;
  }

  private function set_width(value:Float):Float {
    if (w != value || widthType != SizeType.NORMAL) {
      w = value;
      widthType = SizeType.NORMAL;
      invalidate();
      invalidateParent();
    }
    return w;
  }

  private function set_height(value:Float):Float {
    if (h != value || heightType != SizeType.NORMAL) {
      h = value;
      heightType = SizeType.NORMAL;
      invalidate();
      invalidateParent();
    }
    return h;
  }

  private function set_pWidth(value:Float):Float {
    if (pWidth != value || widthType != SizeType.PERCENT) {
      pWidth = value;
      widthType = SizeType.PERCENT;
      invalidate();
      invalidateParent();
    }
    return pWidth;
  }

  private function set_pHeight(value:Float):Float {
    if (pHeight != value || heightType != SizeType.PERCENT) {
      pHeight = value;
      heightType = SizeType.PERCENT;
      invalidate();
      invalidateParent();
    }
    return pHeight;
  }

  private function set_contentSize(value:Bool):Bool {
    if (contentSize != value) {
      contentSize = value;
      invalidate();
      invalidateParent();
    }
    return contentSize;
  }

  private function set_hAlign(value:HAlign):HAlign {
    if (hAlign != value) {
      hAlign = value;
      invalidate();
      invalidateParent();
    }
    return hAlign;
  }

  private function set_vAlign(value:VAlign):VAlign {
    if (vAlign != value) {
      vAlign = value;
      invalidate();
      invalidateParent();
    }
    return vAlign;
  }

  private function set_leftMargin(value:Float):Float {
    if (leftMargin != value) {
      leftMargin = value;
      invalidate();
      invalidateParent();
    }
    return leftMargin;
  }

  private function set_rightMargin(value:Float):Float {
    if (rightMargin != value) {
      rightMargin = value;
      invalidate();
      invalidateParent();
    }
    return rightMargin;
  }

  private function set_topMargin(value:Float):Float {
    if (topMargin != value) {
      topMargin = value;
      invalidate();
      invalidateParent();
    }
    return topMargin;
  }

  private function set_bottomMargin(value:Float):Float {
    if (bottomMargin != value) {
      bottomMargin = value;
      invalidate();
      invalidateParent();
    }
    return bottomMargin;
  }

  private function set_margins(value:Float):Float {
    leftMargin = rightMargin = topMargin = bottomMargin = value;
    invalidate();
    invalidateParent();
    return value;
  }

  private function set_skin(value:ISkin<Sprite, IView<Sprite>>):ISkin<Sprite, IView<Sprite>> {
    skin = value;
    invalidate();
    return skin;
  }
}


class Updater {

  public var stage(null, set):Stage;
  private var invalidated:Array<IView<Sprite>>;

  public function new() {
    invalidated = [];
  }

  private function set_stage(value:Stage):Stage {
    value.addEventListener(Event.ENTER_FRAME, update);
    return value;
  }

  public function invalidate(view:IView<Sprite>):Void {
    invalidated.push(view);
  }

  public function update(?_):Void {
    try {
    while (invalidated.length > 0) {
      invalidated.shift().update();
    }
    } catch (error:Dynamic) {
      L.e("UPDATE", "", error);
    }
  }

}