Defines an annotation strikeout text review object.
function lt.Annotations.Engine.AnnTextStrikeoutObject
extends lt.Annotations.Engine.AnnTextReviewObject
implements IAnnObjectCloneable
class lt.Annotations.Engine.AnnTextStrikeoutObject()
extends AnnTextReviewObject
implements IAnnObjectCloneable
AnnTextStrikeoutObject derives from AnnTextReviewObject and has a renderer that will draw a thick horizontal line in the center of each rectangle using the current Fill value. The thickness and location of the line is a ratio of the height of each rectangle and can be controlled by the renderer. The constructor of this object will create a solid red brush and set it in Fill.
Text strikeout is used by application such as Microsoft Word and Adobe Acrobat to mark for deletion part of the text in review mode. The LEADTOOLS Document Viewer uses text strikeout for this purpose. It also stores any text notes added by the reviewer in the metadata of the AnnObject using the ContentMetadataKey key.
Programmatically, the boundaries and rectangles of the text strikeout object can be controlled using the following properties:
This example creates a text strikeout object and adds it to the automation container.
import { EngineHelper } from "../../utilities/EngineHelper";
export class AnnObjects_TextStrikeout {
constructor() {
const helper = new EngineHelper();
helper.run(this.create);
}
create = (automation: lt.Annotations.Automation.AnnAutomation) => {
const inch: number = 720.0;
// Add a text strikeout object
const annObj: lt.Annotations.Engine.AnnTextStrikeoutObject = new lt.Annotations.Engine.AnnTextStrikeoutObject();
// Set the strikeout rectangles for the text strikeout object
// Note that this object can be composed of multiple rectangles to strikeout them like strikeout specific lines of text
// In this example we will create two rectangles
const rectangles: lt.LeadRectD[] = [lt.LeadRectD.create(0, 0, 1 * inch, 0.5 * inch), lt.LeadRectD.create(0, 0.7 * inch, 1 * inch, 0.5 * inch)];
annObj.setRectangles(rectangles);
// Add the object to the automation container
automation.container.children.add(annObj);
// Select the object
automation.selectObject(annObj);
}
}
export class EngineHelper {
// Automation object
protected _automation: lt.Annotations.Automation.AnnAutomation = null;
// Image viewer
protected _viewer: lt.Controls.ImageViewer = null;
constructor() {
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
}
public run(callback?: (automation: lt.Annotations.Automation.AnnAutomation, viewer: lt.Controls.ImageViewer) => void): void {
// Create the viewer
const imageViewerDiv = document.getElementById("imageViewerDiv");
const createOptions: lt.Controls.ImageViewerCreateOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
const viewer: lt.Controls.ImageViewer = new lt.Controls.ImageViewer(createOptions);
viewer.autoCreateCanvas = true;
this._viewer = viewer;
// PanZoom interactive mode
const panZoom: lt.Controls.ImageViewerPanZoomInteractiveMode = new lt.Controls.ImageViewerPanZoomInteractiveMode();
// Create an instance of the Automation control object that works with LEADTOOLS ImageViewer
const imageViewerAutomationControl: lt.Demos.Annotations.ImageViewerAutomationControl = new lt.Demos.Annotations.ImageViewerAutomationControl();
// Attach our image viewer
imageViewerAutomationControl.imageViewer = viewer;
// Set the image viewer interactive mode
const automationInteractiveMode: lt.Demos.Annotations.AutomationInteractiveMode = new lt.Demos.Annotations.AutomationInteractiveMode();
automationInteractiveMode.automationControl = imageViewerAutomationControl;
// Set the image URL
viewer.imageUrl = "http://demo.leadtools.com/images/png/pngimage.png";
// Create and set up the automation manager using the HTML5 rendering engine
const renderingEngine: lt.Annotations.Rendering.AnnHtml5RenderingEngine = new lt.Annotations.Rendering.AnnHtml5RenderingEngine();
const manager: lt.Annotations.Automation.AnnAutomationManager = lt.Annotations.Automation.AnnAutomationManager.create(renderingEngine);
// Create default automation objects
manager.createDefaultObjects();
// Add the objects to the objects select element
const currentObjectIdSelect = document.getElementById("currentObjectIdSelect") as HTMLSelectElement;
// Add the PanZoom option
currentObjectIdSelect.options[currentObjectIdSelect.options.length] = new Option("Pan/Zoom", lt.Annotations.Engine.AnnObject.none.toString());
const automationObjCount: number = manager.objects.count;
for (let i = 0; i < automationObjCount; i++) {
// Get the object
const automationObj: lt.Annotations.Automation.AnnAutomationObject = manager.objects.item(i);
// Add its name to the select element
const name: string = automationObj.name;
const id: string = automationObj.id.toString();
currentObjectIdSelect.options[currentObjectIdSelect.options.length] = new Option(name, id);
}
// Hook to its change event
currentObjectIdSelect.addEventListener("change", () => {
// Get the object ID
const id: number = parseInt(currentObjectIdSelect.options[currentObjectIdSelect.selectedIndex].value);
// Set it as the current object in the manager
manager.currentObjectId = id;
// If this is the "Pan/Zoom" option, then back to pan zoom, otherwise, set our automation control
if (id == lt.Annotations.Engine.AnnObject.none) {
viewer.defaultInteractiveMode = panZoom;
}
else {
viewer.defaultInteractiveMode = automationInteractiveMode;
}
});
// When the current object ID changes, we need to update our select
manager.add_currentObjectIdChanged((sender, e) => {
const currentObjectId: number = manager.currentObjectId;
for (let i = 0; i < currentObjectIdSelect.options.length; i++) {
const id: number = parseInt(currentObjectIdSelect.options[i].value);
if (id === currentObjectId) {
currentObjectIdSelect.selectedIndex = i;
break;
}
}
});
// Pan zoom by default
viewer.defaultInteractiveMode = panZoom;
// set up the automation (will create the container as well)
const automation: lt.Annotations.Automation.AnnAutomation = new lt.Annotations.Automation.AnnAutomation(manager, imageViewerAutomationControl);
this._automation = automation;
// Add handler to update the container size when the image size changes
viewer.itemChanged.add((sender, e) => {
const container: lt.Annotations.Engine.AnnContainer = automation.container;
container.size = container.mapper.sizeToContainerCoordinates(viewer.imageSize);
//Create new canvas data provider for the new image
const canvasDataProvider: lt.Demos.Annotations.CanvasDataProvider = new lt.Demos.Annotations.CanvasDataProvider(viewer.activeItem.canvas);
imageViewerAutomationControl.automationDataProvider = canvasDataProvider;
});
// set up this automation as the active one
this._automation.active = true;
const exampleButton = document.getElementById("exampleButton");
exampleButton.onclick = () => {
if(callback)
callback(this._automation, this._viewer);
}
}
}
import { EngineHelper } from "../../utilities/EngineHelper";
export class AnnObjects_TextStrikeout {
constructor() {
const helper = new EngineHelper();
helper.run(this.create);
}
create = (automation) => {
const inch = 720.0;
// Add a text strikeout object
const annObj = new lt.Annotations.Engine.AnnTextStrikeoutObject();
// Set the strikeout rectangles for the text strikeout object
// Note that this object can be composed of multiple rectangles to strikeout them like strikeout specific lines of text
// In this example we will create two rectangles
const rectangles = [lt.LeadRectD.create(0, 0, 1 * inch, 0.5 * inch), lt.LeadRectD.create(0, 0.7 * inch, 1 * inch, 0.5 * inch)];
annObj.setRectangles(rectangles);
// Add the object to the automation container
automation.container.children.add(annObj);
// Select the object
automation.selectObject(annObj);
}
}
export class EngineHelper {
// Automation object
_automation = null;
// Image viewer
_viewer = null;
constructor() {
// Set the LEADTOOLS license. Replace this with your actual license file
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/js/LEADTOOLSEVAL.txt", "EVAL", null);
}
run(callback) {
// Create the viewer
const imageViewerDiv = document.getElementById("imageViewerDiv");
const createOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv);
const viewer = new lt.Controls.ImageViewer(createOptions);
viewer.autoCreateCanvas = true;
this._viewer = viewer;
// PanZoom interactive mode
const panZoom = new lt.Controls.ImageViewerPanZoomInteractiveMode();
// Create an instance of the Automation control object that works with LEADTOOLS ImageViewer
const imageViewerAutomationControl = new lt.Demos.Annotations.ImageViewerAutomationControl();
// Attach our image viewer
imageViewerAutomationControl.imageViewer = viewer;
// Set the image viewer interactive mode
const automationInteractiveMode = new lt.Demos.Annotations.AutomationInteractiveMode();
automationInteractiveMode.automationControl = imageViewerAutomationControl;
// Set the image URL
viewer.imageUrl = "http://demo.leadtools.com/images/png/pngimage.png";
// Create and set up the automation manager using the HTML5 rendering engine
const renderingEngine = new lt.Annotations.Rendering.AnnHtml5RenderingEngine();
const manager = lt.Annotations.Automation.AnnAutomationManager.create(renderingEngine);
// Create default automation objects
manager.createDefaultObjects();
// Add the objects to the objects select element
const currentObjectIdSelect = document.getElementById("currentObjectIdSelect");
// Add the PanZoom option
currentObjectIdSelect.options[currentObjectIdSelect.options.length] = new Option("Pan/Zoom", lt.Annotations.Engine.AnnObject.none.toString());
const automationObjCount = manager.objects.count;
for (let i = 0; i < automationObjCount; i++) {
// Get the object
const automationObj = manager.objects.item(i);
// Add its name to the select element
const name = automationObj.name;
const id = automationObj.id.toString();
currentObjectIdSelect.options[currentObjectIdSelect.options.length] = new Option(name, id);
}
// Hook to its change event
currentObjectIdSelect.addEventListener("change", () => {
// Get the object ID
const id = parseInt(currentObjectIdSelect.options[currentObjectIdSelect.selectedIndex].value);
// Set it as the current object in the manager
manager.currentObjectId = id;
// If this is the "Pan/Zoom" option, then back to pan zoom, otherwise, set our automation control
if (id == lt.Annotations.Engine.AnnObject.none) {
viewer.defaultInteractiveMode = panZoom;
}
else {
viewer.defaultInteractiveMode = automationInteractiveMode;
}
});
// When the current object ID changes, we need to update our select
manager.add_currentObjectIdChanged((sender, e) => {
const currentObjectId = manager.currentObjectId;
for (let i = 0; i < currentObjectIdSelect.options.length; i++) {
const id = parseInt(currentObjectIdSelect.options[i].value);
if (id === currentObjectId) {
currentObjectIdSelect.selectedIndex = i;
break;
}
}
});
// Pan zoom by default
viewer.defaultInteractiveMode = panZoom;
// set up the automation (will create the container as well)
const automation = new lt.Annotations.Automation.AnnAutomation(manager, imageViewerAutomationControl);
this._automation = automation;
// Add handler to update the container size when the image size changes
viewer.itemChanged.add((sender, e) => {
const container = automation.container;
container.size = container.mapper.sizeToContainerCoordinates(viewer.imageSize);
//Create new canvas data provider for the new image
const canvasDataProvider = new lt.Demos.Annotations.CanvasDataProvider(viewer.activeItem.canvas);
imageViewerAutomationControl.automationDataProvider = canvasDataProvider;
});
// set up this automation as the active one
this._automation.active = true;
const exampleButton = document.getElementById("exampleButton");
exampleButton.onclick = () => {
if(callback)
callback(this._automation, this._viewer);
}
}
}
<!doctype html>
<html lang="en">
<title>AnnObject Example | AnnTextStrikeout</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.Annotations.BatesStamp.js"></script>
<script src="../../LT/Leadtools.Demos.js"></script>
<script src="../../LT/Leadtools.Demos.Annotations.js"></script>
<style>
#imageViewerDiv {
border: 1px solid #000000;
width: 800px;
height: 800px;
background-color: #7F7F7F;
}
</style>
<!-- All demo files are bundled and appended to the window -->
<script src="../../bundle.js" type="text/javascript"></script>
</head>
<body>
<p>Either Pan/Zoom or Annotations mode. In annotations mode, draw new objects or edit them.</p>
<div>
<select id="currentObjectIdSelect"></select>
</div>
<div>
<input type="button" id="exampleButton" value="Example" />
<label id="exampleLabel" />
</div>
<div id="imageViewerDiv" />
</body>
<script>
window.onload = () => new window.examples.AnnObjects.AnnTextStrikeout();
</script>
</html>
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