Enable panning on the target control.
Object.defineProperty(ImageViewerPanControl.prototype, 'enablePan',get: function(),set: function(value))
enablePan: boolean;
true to allow the user to click and drag on the target control, otherwise; false. Default value is true.
This value allows the user to click and drag on the target control to move the pan rectangle as well as panning the in the image viewer.
import { ImageViewer_Example } from "../ImageViewer";export class ImageViewer_PanControlExample {private viewerExample;constructor() {this.viewerExample = new ImageViewer_Example(this.run);}private run = (viewer: lt.Controls.ImageViewer) => {const control = document.createElement("canvas") as HTMLCanvasElement;control.width = 400;control.height = 400;document.body.appendChild(control);const panControl: lt.Controls.ImageViewerPanControl = new lt.Controls.ImageViewerPanControl();panControl.enablePan = true;panControl.borderColor = "yellow";panControl.outsideColor = "rgba(0, 0, 0, 0.5)";panControl.workingCursor = "crosshair";panControl.imageViewer = viewer;panControl.control = control;}}
export class ImageViewer_Example {// LEADTOOLS ImageViewer to be used with this exampleprotected imageViewer: lt.Controls.ImageViewer = null;// Generic state value used by the examplespublic timesClicked: number = 0;constructor(callback?: (viewer: lt.Controls.ImageViewer) => void) {// Set the LEADTOOLS license. Replace this with your actual license filelt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);// Create an image viewer inside the imageViewerDiv elementconst 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 outthis.imageViewer.interactiveModes.add(new lt.Controls.ImageViewerPanZoomInteractiveMode());// Load an imagethis.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 exampleif (callback)callback(this.imageViewer);});}}
import { ImageViewer_Example } from "../ImageViewer";export class ImageViewer_PanControlExample {viewerExample;constructor() {this.viewerExample = new ImageViewer_Example(this.run);}run = (viewer) => {const control = document.createElement("canvas");control.width = 400;control.height = 400;document.body.appendChild(control);const panControl = new lt.Controls.ImageViewerPanControl();panControl.enablePan = true;panControl.borderColor = "yellow";panControl.outsideColor = "rgba(0, 0, 0, 0.5)";panControl.workingCursor = "crosshair";panControl.imageViewer = viewer;panControl.control = control;}}
export class ImageViewer_Example {// LEADTOOLS ImageViewer to be used with this exampleimageViewer = null;// Generic state value used by the examplestimesClicked = 0;constructor(callback) {// Set the LEADTOOLS license. Replace this with your actual license filelt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);// Create an image viewer inside the imageViewerDiv elementconst 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 outthis.imageViewer.interactiveModes.add(new lt.Controls.ImageViewerPanZoomInteractiveMode());// Load an imagethis.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 exampleif (callback)callback(this.imageViewer);});}}
<!doctype html><html lang="en"><title>Controls Example | PanControl</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.InteractiveMode.PanControl();};</script></html>
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