Size of the item.
Object.defineProperty(ImageViewerItem.prototype, 'size',
get: function(),
set: function(value)
)
size: LeadSizeD;
The size of the entire item, including any margins, borders, and padding. The default value is 0,0.
For more information, refer to Image Viewer Items.
This example adds items to the viewer with differing sizes but similar images. The images are fit to the size of the item.
import { ImageViewer_Example } from "../ImageViewer";
export class ImageViewerItem_SizeExample {
private viewerExample;
constructor() {
this.viewerExample = new ImageViewer_Example(this.run);
}
private run = (viewer: lt.Controls.ImageViewer) => {
// Add some styles
viewer.items.clear();
viewer.viewLayout = new lt.Controls.ImageViewerVerticalViewLayout();
viewer.itemMargin = lt.Controls.ControlPadding.createAll(10);
viewer.itemBorderThickness = 5;
viewer.itemPadding = lt.Controls.ControlPadding.createAll(20);
// Create our item sizes
const sizes: lt.LeadSizeD[] = [
lt.LeadSizeD.create(200, 100),
lt.LeadSizeD.create(100, 200),
lt.LeadSizeD.create(200, 300),
lt.LeadSizeD.create(300, 200),
];
// By default, fit each image to its item
viewer.itemSizeMode = lt.Controls.ControlSizeMode.fit;
// We'll create images from this canvas
const canvas = document.createElement("canvas") as HTMLCanvasElement;
canvas.width = 400;
canvas.height = 400;
const ctx: CanvasRenderingContext2D = canvas.getContext("2d");
ctx.font = "bold 50px Times New Roman";
sizes.forEach((size, i) => {
// Add the background and item text
ctx.fillStyle = "white";
ctx.fillRect(0, 0, 400, 400);
ctx.fillStyle = "black";
ctx.fillText("Item " + i, 50, 50);
// Create an image from the canvas
const image = document.createElement("img");
image.onload = () => {
// Create a new item to add
const item: lt.Controls.ImageViewerItem = new lt.Controls.ImageViewerItem();
item.text = "Item" + i;
item.image = image;
// Set the size to be the size from the array
item.size = size;
viewer.items.add(item);
}
image.src = canvas.toDataURL("image/png");
});
}
}
export class ImageViewer_Example {
// LEADTOOLS ImageViewer to be used with this example
protected imageViewer: lt.Controls.ImageViewer = null;
// Generic state value used by the examples
public timesClicked: number = 0;
constructor(callback?: (viewer: lt.Controls.ImageViewer) => void) {
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
// Create an image viewer inside the imageViewerDiv element
const imageViewerDiv = document.getElementById("imageViewerDiv");
const createOptions: lt.Controls.ImageViewerCreateOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
this.imageViewer = new lt.Controls.ImageViewer(createOptions);
this.imageViewer.viewVerticalAlignment = lt.Controls.ControlAlignment.center;
this.imageViewer.viewHorizontalAlignment = lt.Controls.ControlAlignment.center;
this.imageViewer.autoCreateCanvas = true;
// Add Pan/Zoom interactive mode
// Click and drag to pan, CTRL-Click and drag to zoom in and out
this.imageViewer.interactiveModes.add(new lt.Controls.ImageViewerPanZoomInteractiveMode());
// Load an image
this.imageViewer.imageUrl = "https://demo.leadtools.com/images/jpeg/cannon.jpg";
this.imageViewer.zoom(lt.Controls.ControlSizeMode.fit, .9, this.imageViewer.defaultZoomOrigin);
const exampleButton = document.getElementById("exampleButton");
exampleButton.addEventListener("click", () => {
this.timesClicked++;
// Run the example
if (callback)
callback(this.imageViewer);
});
}
}
import { ImageViewer_Example } from "../ImageViewer";
export class ImageViewerItem_SizeExample {
viewerExample;
constructor() {
this.viewerExample = new ImageViewer_Example(this.run);
}
run = (viewer) => {
// Add some styles
viewer.items.clear();
viewer.viewLayout = new lt.Controls.ImageViewerVerticalViewLayout();
viewer.itemMargin = lt.Controls.ControlPadding.createAll(10);
viewer.itemBorderThickness = 5;
viewer.itemPadding = lt.Controls.ControlPadding.createAll(20);
// Create our item sizes
const sizes = [
lt.LeadSizeD.create(200, 100),
lt.LeadSizeD.create(100, 200),
lt.LeadSizeD.create(200, 300),
lt.LeadSizeD.create(300, 200),
];
// By default, fit each image to its item
viewer.itemSizeMode = lt.Controls.ControlSizeMode.fit;
// We'll create images from this canvas
const canvas = document.createElement("canvas");
canvas.width = 400;
canvas.height = 400;
const ctx = canvas.getContext("2d");
ctx.font = "bold 50px Times New Roman";
sizes.forEach((size, i) => {
// Add the background and item text
ctx.fillStyle = "white";
ctx.fillRect(0, 0, 400, 400);
ctx.fillStyle = "black";
ctx.fillText("Item " + i, 50, 50);
// Create an image from the canvas
const image = document.createElement("img");
image.onload = () => {
// Create a new item to add
const item = new lt.Controls.ImageViewerItem();
item.text = "Item" + i;
item.image = image;
// Set the size to be the size from the array
item.size = size;
viewer.items.add(item);
}
image.src = canvas.toDataURL("image/png");
});
}
}
export class ImageViewer_Example {
// LEADTOOLS ImageViewer to be used with this example
imageViewer = null;
// Generic state value used by the examples
timesClicked = 0;
constructor(callback) {
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
// Create an image viewer inside the imageViewerDiv element
const imageViewerDiv = document.getElementById("imageViewerDiv");
const createOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
this.imageViewer = new lt.Controls.ImageViewer(createOptions);
this.imageViewer.viewVerticalAlignment = lt.Controls.ControlAlignment.center;
this.imageViewer.viewHorizontalAlignment = lt.Controls.ControlAlignment.center;
this.imageViewer.autoCreateCanvas = true;
// Add Pan/Zoom interactive mode
// Click and drag to pan, CTRL-Click and drag to zoom in and out
this.imageViewer.interactiveModes.add(new lt.Controls.ImageViewerPanZoomInteractiveMode());
// Load an image
this.imageViewer.imageUrl = "https://demo.leadtools.com/images/jpeg/cannon.jpg";
this.imageViewer.zoom(lt.Controls.ControlSizeMode.fit, .9, this.imageViewer.defaultZoomOrigin);
const exampleButton = document.getElementById("exampleButton");
exampleButton.addEventListener("click", () => {
this.timesClicked++;
// Run the example
if (callback)
callback(this.imageViewer);
});
}
}
<!doctype html>
<html lang="en">
<title>Controls Example | Size</title>
<head>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script>
<script src="../../LT/Leadtools.js"></script>
<script src="../../LT/Leadtools.Controls.js"></script>
<script src="../../LT/Leadtools.Annotations.Engine.js"></script>
<script src="../../LT/Leadtools.Annotations.Designers.js"></script>
<script src="../../LT/Leadtools.Annotations.Rendering.Javascript.js"></script>
<script src="../../LT/Leadtools.Annotations.Automation.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Main.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Color.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Core.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Effects.js"></script>
<script src="../../LT/Leadtools.Document.js"></script>
<script src="../../LT/Leadtools.Document.Viewer.js"></script>
<style>
body {
font-family: 'Segoe UI', sans-serif;
}
#imageViewerDiv {
border: 1px solid #888;
width: 500px;
height: 500px;
background-color: #eee;
}
</style>
<!-- All demo files are bundled and appended to the window -->
<script src="../../bundle.js" type="text/javascript"></script>
</head>
<body>
<p>Press and drag on the image to pan.</p>
<p>Hold down the control key and press and drag on the image or pinch with two fingers to zoom in and out.</p>
<div>
<button type="button" id="exampleButton">Run Example</button>
</div>
<div id="imageViewerDiv"></div>
<div id="output"></div>
</body>
<script>
window.onload = () => {
const example = new window.examples.ImageViewerItem.Size();
};
</script>
</html>
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