camera-enhancer-javascript-samples/draw-shapes/index.html at main · Dynamsoft/camera-enhancer-javascript-samples · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Dynamsoft Camera Enhancer Sample - Drawing Shapes</title>
    <script src="https://cdn.jsdelivr.net/npm/dynamsoft-core@3.0.30/dist/core.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/dynamsoft-camera-enhancer@4.0.2/dist/dce.js"></script>
  </head>
  <body>
    <select id="select-shapes">
      <option value="rect">rectangle</option>
      <option value="quad">quadrilateral</option>
      <option value="line">line</option>
      <option value="text">text</option>
      <option value="image">image</option>
    </select>
    <button id="btn-add-shape">add shape</button>
    <button id="btn-remove-all-shapes">remove all shapes</button>
    <br />
    <button id="btn-use-custom-style">use custom style</button>
    <div id="div-ui-container" style="width: 100%; height: 70vh"></div>
    <script>
      let cameraView, cameraEnhancer;
      let drawingLayer;

      (async () => {
        // Create 'CameraView' instance and use default UI.
        cameraView = await Dynamsoft.DCE.CameraView.createInstance();
        // Get 'CameraView' instance's UI and append it to DOM.
        document
          .querySelector("#div-ui-container")
          .appendChild(cameraView.getUIElement());

        // Create 'CameraEnhancer' instance and pass 'cameraView' to it for UI control.
        cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(
          cameraView
        );
        await cameraEnhancer.open();
        drawingLayer = cameraView.createDrawingLayer();
      })();

      document.querySelector("#btn-add-shape").addEventListener("click", () => {
        if (!drawingLayer) {
          console.error(`The initialization is not complete.`);
          return;
        }
        const shape = document.querySelector("#select-shapes").value;
        switch (shape) {
          case "rect":
            {
              const x = 0,
                y = 0,
                width = 100,
                height = 200;
              const rectItem = new Dynamsoft.DCE.RectDrawingItem({
                x,
                y,
                width,
                height,
              });
              drawingLayer.addDrawingItems([rectItem]);
            }
            break;
          case "quad":
            {
              const points = [
                {
                  x: 200,
                  y: 200,
                },
                {
                  x: 400,
                  y: 150,
                },
                {
                  x: 500,
                  y: 400,
                },
                {
                  x: 200,
                  y: 300,
                },
              ];
              const quadItem = new Dynamsoft.DCE.QuadDrawingItem({
                points,
              });
              drawingLayer.addDrawingItems([quadItem]);
            }
            break;
          case "line":
            {
              const startPoint = { x: 400, y: 100 },
                endPoint = { x: 600, y: 300 };
              const lineItem = new Dynamsoft.DCE.LineDrawingItem({
                startPoint,
                endPoint,
              });
              drawingLayer.addDrawingItems([lineItem]);
            }
            break;
          case "text":
            {
              const text = "I am a Text.",
                x = 700,
                y = 100,
                width = 200,
                height = 100;
              const textItem = new Dynamsoft.DCE.TextDrawingItem(
                text,
                {
                  x,
                  y,
                  width,
                  height,
                }
              );
              drawingLayer.addDrawingItems([textItem]);
            }
            break;
          case "image":
            {
              const image = new Image(192, 192),
                x = 900,
                y = 200,
                width = 192,
                height = 192;
              image.src = "image.png";
              image.decode().then(() => {
                const imageItem =
                  new Dynamsoft.DCE.ImageDrawingItem(
                    image,
                    { x, y, width, height },
                    true
                  );
                drawingLayer.addDrawingItems([imageItem]);
              });
            }
            break;
          default:
            break;
        }
      });

      document
        .querySelector("#btn-remove-all-shapes")
        .addEventListener("click", () => {
          if (!drawingLayer) {
            console.error(`The initialization is not complete.`);
            return;
          }
          drawingLayer.clearDrawingItems();
        });

      document
        .querySelector("#btn-use-custom-style")
        .addEventListener("click", () => {
          if (!drawingLayer) {
            console.error(`The initialization is not complete.`);
            return;
          }
          const styleDefinition = {
            lineWidth: 5,
            fillStyle: "rgba(254, 180, 32, 0.3)",
            strokeStyle: "rgba(254, 180, 32, 0.9)",
            paintMode: "strokeAndFill",
            fontFamily: "sans-serif",
            fontSize: 40,
          };
          const styleId =
            Dynamsoft.DCE.DrawingStyleManager.createDrawingStyle(
              styleDefinition
            );
          drawingLayer.setDefaultStyle(styleId);
        });
    </script>
  </body>
</html>