test sayfa

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Drag and Drop Example</title>
</head>
<body>
  <div>
    <canvas id="canvas" width="500" height="500"></canvas>
  </div>
  <script>
    document.addEventListener('DOMContentLoaded', function() {
      var canvas = document.getElementById('canvas');
      var context = canvas.getContext('2d');
      var draggedObject = null;

      var objects = [
        { x: 50, y: 50, width: 50, height: 50, color: 'red' },
        { x: 150, y: 100, width: 50, height: 50, color: 'blue' },
        { x: 250, y: 150, width: 50, height: 50, color: 'green' }
      ];

      function drawObjects() {
        context.clearRect(0, 0, canvas.width, canvas.height);
        for (var i = 0; i < objects.length; i++) {
          var obj = objects[i];
          context.fillStyle = obj.color;
          context.fillRect(obj.x, obj.y, obj.width, obj.height);
        }
      }

      function getMousePos(e) {
        var rect = canvas.getBoundingClientRect();
        return {
          x: e.clientX - rect.left,
          y: e.clientY - rect.top
        };
      }

      canvas.addEventListener('mousedown', function (e) {
        var mousePos = getMousePos(e);

        for (var i = objects.length - 1; i >= 0; i--) {
          var obj = objects[i];
          if (mousePos.x >= obj.x && mousePos.x <= obj.x + obj.width &&
              mousePos.y >= obj.y && mousePos.y <= obj.y + obj.height) {
            draggedObject = obj;
            break;
          }
        }
      });

      canvas.addEventListener('mousemove', function (e) {
        if (draggedObject !== null) {
          var mousePos = getMousePos(e);
          draggedObject.x = mousePos.x - draggedObject.width / 2;
          draggedObject.y = mousePos.y - draggedObject.height / 2;
          drawObjects();
        }
      });

      canvas.addEventListener('mouseup', function () {
        draggedObject = null;
      });

      drawObjects();
    });
  </script>
</body>
</html>
Drag and Drop Example