hx
package;

import openfl.events.Event;
import openfl.events.MouseEvent;
import openfl.display.BitmapData;
import openfl.display.Bitmap;
import openfl.display.Sprite;

class Main extends Sprite
{

    var canvasWidth:Int = 400;
    var canvasHeight:Int = 400;
    var canvasColor:Int = 0xFFFFFFFF;
    var canvas:Bitmap;
    var brushColor:Int = 0xFF000000;

    public function new()
    {
        super();
        initCanvas();
        addEventListeners();
    }
    

    private function onUpdate(ev:Event) {
    }

    private function mouseHandler(ev:MouseEvent) {
        if (ev.buttonDown) {
            canvas.bitmapData.unlock();
            canvas.bitmapData.setPixel32(Std.int(mouseX), Std.int(mouseY), brushColor);
            canvas.bitmapData.lock();
        }
    }
    private function initCanvas() {
        canvas = new Bitmap(new BitmapData(canvasWidth, canvasHeight, false, canvasColor));
        addChild(canvas);
    }

    private function addEventListeners() {
        addEventListener(Event.ENTER_FRAME, onUpdate);
        addEventListener(MouseEvent.MOUSE_MOVE, mouseHandler);
        
    }
}