DIR : /home/kozerus/public_html/go/konva_save.html

/home/kozerus/public_html/go

Konva Stage Data URL Demo
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<!DOCTYPE html>
<html>
  <head>
    <script src="https://unpkg.com/konva@8.3.1/konva.min.js"></script>
    <meta charset="utf-8" />
    <title>Konva Stage Data URL Demo</title>
    <style>
      body {
        margin: 0;
        padding: 0;
        overflow: hidden;
        background-color: #f0f0f0;
      }

      #buttons {
        position: absolute;
        top: 5px;
        left: 10px;
      }

      #buttons > input {
        padding: 10px;
        display: block;
        margin-top: 5px;
      }
    </style>
  </head>

  <body>
    <div id="container"></div>
    <div id="buttons">
      <button id="save">
        Save as image
      </button>
    </div>
    <script>
      var width = window.innerWidth;
      var height = window.innerHeight;

      var stage = new Konva.Stage({
        container: 'container',
        width: width,
        height: height,
      });

      var layer = new Konva.Layer();

      var rectX = stage.width() / 2 - 50;
      var rectY = stage.height() / 2 - 25;

      var box = new Konva.Rect({
        x: rectX,
        y: rectY,
        width: 100,
        height: 50,
        fill: '#00D2FF',
        stroke: 'black',
        strokeWidth: 4,
        draggable: true,
      });

      box.on('mouseover', function () {
        document.body.style.cursor = 'pointer';
      });

      box.on('mouseout', function () {
        document.body.style.cursor = 'default';
      });

      layer.add(box);
      stage.add(layer);

      // function from https://stackoverflow.com/a/15832662/512042
      function downloadURI(uri, name) {
        var link = document.createElement('a');
        link.download = name;
        link.href = uri;
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
        delete link;
      }

      document.getElementById('save').addEventListener(
        'click',
        function () {
          var dataURL = stage.toDataURL();
          downloadURI(dataURL, 'stage.png');
        },
        false
      );
    </script>
  </body>
</html>

koh5_pano

Drag mouse to navigate.

Navigation

Left/Right Mouse drag: Changes camera heading.
Up/Sown Mouse drag: Changes camera pitch.
Scroll wheel: Changes camera field of view.
I-Key: Displays Info panel with canvas size, image size and FPS.

17.Aug.2010, Martin Wengenmayer