MenuItem Constructor

Summary

Initializes a new instance of MenuItem, with explicit parameters.

Syntax
TypeScript
JavaScript
MenuItem = function( 
   text, 
   icon, 
   userData 
) 
constructor( 
   text: string, 
   icon: HTMLImageElement, 
   userData: any 
); 

Parameters

text

The menu item's caption, which is the text that will be displayed.

icon

An Icon displayed next to the text.

userData

Extra user data stored in the item.

Example
MenuItem.js
MedicalViewer_2DCell_Grid_Example.js
MenuItem.ts
MedicalViewer_2DCell_Grid_Example.ts
MenuItem.html
 
import { MedicalViewer_2DCell_Grid_Example } from "../MedicalViewer_2DCell_Grid_Example"; 
 
export class MenuItem_Example { 
    constructor() { 
        this.clicked = (e) => { 
            if (e.button == 2) { 
                var cell = this.medicalViewer.layout.cells.get_item(0); 
                var menu = new lt.Controls.Medical.Menu("Relocate "); 
                menu.items.add(new lt.Controls.Medical.MenuItem("Move the cell here", null, e.currentTarget.emptyCell)); 
                menu.show(e.currentTarget.emptyCell, e.offsetX, e.offsetY, lt.LeadRectD.create(0, 0, 500, 500)); 
                menu.menuItemSelected.add((sender, e) => { 
                    var selectedCell = e.item.userData; 
                    var selectedCellRowPosition = selectedCell.rowPosition; 
                    var selectedCellColumnsPosition = selectedCell.columnsPosition; 
                    selectedCell.rowPosition = cell.rowPosition; 
                    selectedCell.columnsPosition = cell.columnsPosition; 
                    cell.rowPosition = selectedCellRowPosition; 
                    cell.columnsPosition = selectedCellColumnsPosition; 
                }); 
            } 
        }; 
        this.run = (medicalViewer) => { 
            this.medicalViewer = medicalViewer; 
            var i = 0; 
            var length = medicalViewer.emptyDivs.items.count; 
            for (i = 0; i < length; i++) { 
                var emptyCell = medicalViewer.emptyDivs.items.get_item(i); 
                emptyCell.div.emptyCell = emptyCell; 
                emptyCell.div.addEventListener('mouseup', this.clicked); 
            } 
            medicalViewer.emptyDivs.items.collectionChanged.add((sender, e) => { 
                var index = 0; 
                var div; 
                var length = e.newItems.length; 
                if (e.get_action() === lt.NotifyLeadCollectionChangedAction.add) { 
                    for (; index < length; index++) { 
                        var emptyCell = e.newItems[index]; 
                        div = emptyCell.div; 
                        div.emptyCell = emptyCell; 
                        div.addEventListener('mouseup', this.clicked); 
                    } 
                } 
            }); 
        }; 
        this.viewerExample = new MedicalViewer_2DCell_Grid_Example(this.run); 
    } 
} 
export class MedicalViewer_2DCell_Grid_Example { 
    constructor(callback) { 
        // LEADTOOLS ImageViewer to be used with this example 
        this.medicalViewer = null; 
        // Generic state value used by the examples 
        this.timesClicked = 0; 
        // 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.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2); 
        this.medicalViewer.onSizeChanged(); 
        var cell = new lt.Controls.Medical.Cell(this.medicalViewer, this.medicalViewer.get_divId(), 1, 1); 
        // Set the show border to "true", to show a border around the cell.  
        cell.set_showFrameBorder(true); 
        // Add the cell to the viewer.   
        this.medicalViewer.layout.get_items().add(cell); 
        // [optional] Select the cell (it can also be selected by clicking on it.)  
        cell.set_selected(true); 
        // Now create a frame object which will hold the image inside the cell.  
        var cellFrame = new lt.Controls.Medical.Frame(cell); 
        // Add the frame to the cell class.  
        cell.get_frames().add(cellFrame); 
        // we are now going to to download an image from LEADTOOLS medical viewer demo web site, you need to change this to download images from your database.  
        var xhttp = new XMLHttpRequest(); 
        xhttp.onreadystatechange = function (data) { 
            if (this.readyState == 4 && this.status == 200) { 
                // here we got the authentication Code that we need to retrieve the images from leadtools database.  
                var authenticationCode = encodeURIComponent(this.responseText); 
                // now, this is the MRTI info that contains the image information, width, height, tiles....etc.  
                var mrtiInfo = new lt.Controls.Medical.MRTIImage(); 
                // The image dpi.  
                mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150); 
                // the tile size, recommended value is 256  
                mrtiInfo.tileSize = lt.LeadSizeD.create(256, 256); 
                mrtiInfo.frameIndex = 0; 
                // does this image support window level.  
                mrtiInfo.supportWindowLevel = true; 
                // different resolution for the image.  
                var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }]; 
                mrtiInfo.resolutions = []; 
                for (var i = 0; i < resolutions.length; i++) { 
                    mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height); 
                } 
                // the image width and height.  
                cellFrame.set_width(mrtiInfo.resolutions[0].width); 
                cellFrame.set_height(mrtiInfo.resolutions[0].height); 
                // the image full size.  
                mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height()); 
                // now we need the image URL,  
                var imageUri = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/retrieve"; 
                imageUri += "/GetImageTile?auth="; 
                imageUri += authenticationCode; 
                // this the image instance UID, change this if you want to retrieve anything else.  
                imageUri += "&instance=0.0.0.0.1.373.3.18.920663105"; 
                mrtiInfo.imageUri = imageUri; 
                // set this info to the cell frame.  
                cellFrame.mrtiInfo = mrtiInfo; 
                // now we need to set the information for the image so we can do window level.  
                var imageInfo = new lt.Controls.Medical.DICOMImageInformation(); 
                // set the image width and height.  
                imageInfo.width = 512; 
                imageInfo.height = 512; 
                // bits per pixel for the image  
                imageInfo.bitsPerPixel = 16; 
                // low and high bit.  
                imageInfo.lowBit = 0; 
                imageInfo.highBit = 11; 
                // other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.  
                imageInfo.modalityIntercept = 0; 
                imageInfo.modalitySlope = 1; 
                imageInfo.minValue = 0; 
                imageInfo.maxValue = 0; 
                imageInfo.windowWidth = 1079; 
                imageInfo.windowCenter = 539; 
                imageInfo.signed = false; 
                imageInfo.photometricInterpretation = 'MONOCHROME2'; 
                imageInfo.firstStoredPixelValueMapped = 0; 
                // set these information to the frame.  
                cellFrame.set_information(imageInfo); 
            } 
        }; 
        // We are trying here to get an image from the LEADTOOLS database, we need to login and get the authentication code.  
        xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true); 
        xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
        // we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.  
        xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' })); 
        const exampleButton = document.getElementById("exampleButton"); 
        exampleButton.addEventListener("click", () => { 
            this.timesClicked++; 
            // Run the example 
            if (callback) 
                callback(this.medicalViewer); 
        }); 
    } 
} 
import { MedicalViewer_2DCell_Grid_Example } from "../MedicalViewer_2DCell_Grid_Example"; 
 
 
export class MenuItem_Example { 
   private viewerExample; 
   private medicalViewer; 
   constructor() { 
      this.viewerExample = new MedicalViewer_2DCell_Grid_Example(this.run); 
   } 
 
   private clicked = (e: MouseEvent) => { 
      if (e.button == 2) { 
         var cell: lt.Controls.Medical.Cell = this.medicalViewer.layout.cells.get_item(0); 
         var menu: lt.Controls.Medical.Menu = new lt.Controls.Medical.Menu("Relocate "); 
 
         menu.items.add(new lt.Controls.Medical.MenuItem("Move the cell here", null, (<any>e.currentTarget).emptyCell)); 
 
         menu.show((<any>e.currentTarget).emptyCell, e.offsetX, e.offsetY, lt.LeadRectD.create(0, 0, 500, 500)); 
 
 
         menu.menuItemSelected.add((sender, e) => { 
 
            var selectedCell: lt.Controls.Medical.LayoutManagerItem = e.item.userData; 
 
            var selectedCellRowPosition = selectedCell.rowPosition; 
            var selectedCellColumnsPosition = selectedCell.columnPosition; 
 
            selectedCell.rowPosition = cell.rowPosition; 
            selectedCell.columnPosition = cell.columnPosition; 
            cell.rowPosition = selectedCellRowPosition; 
            cell.columnPosition = selectedCellColumnsPosition; 
         }); 
      } 
   } 
 
   private run = (medicalViewer: lt.Controls.Medical.MedicalViewer) => { 
      this.medicalViewer = medicalViewer; 
      var i = 0; 
      var length = medicalViewer.emptyDivs.count; 
      for (i = 0; i < length; i++) { 
         var emptyCell: lt.Controls.Medical.EmptyCell = <lt.Controls.Medical.EmptyCell>medicalViewer.emptyDivs.item(i); 
         (<any>emptyCell.div).emptyCell = emptyCell; 
 
         emptyCell.div.addEventListener('mouseup', this.clicked); 
      } 
 
 
      medicalViewer.emptyDivs.add_collectionChanged((sender, e) => { 
         var index = 0; 
         var div; 
         var length = e.newItems.length; 
 
         if (e.get_action() === lt.NotifyLeadCollectionChangedAction.add) { 
            for (; index < length; index++) { 
 
               var emptyCell: lt.Controls.Medical.EmptyCell = e.newItems[index]; 
               div = emptyCell.div; 
               (<any>div.emptyCell) = emptyCell; 
               div.addEventListener('mouseup', this.clicked); 
            } 
 
         } 
      }); 
 
   } 
} 
export class MedicalViewer_2DCell_Grid_Example { 
   // LEADTOOLS ImageViewer to be used with this example 
   protected medicalViewer: lt.Controls.Medical.MedicalViewer = null; 
   // Generic state value used by the examples 
   public timesClicked: number = 0; 
 
   constructor(callback?: (medicalViewer: lt.Controls.Medical.MedicalViewer) => 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: HTMLDivElement = <HTMLDivElement>document.getElementById("imageViewerDiv"); 
      const createOptions: lt.Controls.ImageViewerCreateOptions = new lt.Controls.ImageViewerCreateOptions(imageViewerDiv); 
 
 
 
      this.medicalViewer = new lt.Controls.Medical.MedicalViewer(imageViewerDiv, 2, 2); 
      this.medicalViewer.onSizeChanged(); 
 
      var cell = new lt.Controls.Medical.Cell(this.medicalViewer, this.medicalViewer.get_divId(), 1, 1); 
 
      // Set the show border to "true", to show a border around the cell.  
      cell.set_showFrameBorder(true); 
 
      // Add the cell to the viewer.   
      this.medicalViewer.layout.get_items().add(cell); 
 
      // [optional] Select the cell (it can also be selected by clicking on it.)  
      cell.set_selected(true); 
 
      // Now create a frame object which will hold the image inside the cell.  
      var cellFrame = new lt.Controls.Medical.Frame(cell); 
 
      // Add the frame to the cell class.  
      cell.get_frames().add(cellFrame); 
 
      // we are now going to to download an image from LEADTOOLS Medical Viewer demo web site, change this to download images from your database.  
      var xhttp = new XMLHttpRequest(); 
      xhttp.onreadystatechange = function (data) { 
         if (this.readyState == 4 && this.status == 200) { 
            // here we got the authentication Code that we need to retrieve the images from LEADTOOLS database.  
            var authenticationCode = encodeURIComponent(this.responseText); 
 
 
            // now, this is the MRTI info that contains the image information, width, height, tiles....etc.  
            var mrtiInfo = new lt.Controls.Medical.MRTIImage(); 
 
            // The image dpi.  
            mrtiInfo.fullDpi = lt.LeadSizeD.create(150, 150); 
 
            // the tile size, recommended value is 256  
            mrtiInfo.tileSize = lt.LeadSizeD.create(256, 256); 
            mrtiInfo.frameIndex = 0; 
 
            // does this image support window level.  
            mrtiInfo.supportWindowLevel = true; 
 
            // different resolution for the image.  
            var resolutions = [{ "width": 512, "height": 512 }, { "width": 256, "height": 256 }, { "width": 128, "height": 128 }, { "width": 64, "height": 64 }]; 
            mrtiInfo.resolutions = []; 
            for (var i = 0; i < resolutions.length; i++) { 
               mrtiInfo.resolutions[i] = lt.LeadSizeD.create(resolutions[i].width, resolutions[i].height); 
            } 
 
            // the image width and height.  
            cellFrame.set_width(mrtiInfo.resolutions[0].width); 
            cellFrame.set_height(mrtiInfo.resolutions[0].height); 
 
            // the image full size.  
            mrtiInfo.fullSize = lt.LeadSizeD.create(cellFrame.get_width(), cellFrame.get_height()); 
 
            // now we need the image URL  
            var imageUri = "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/retrieve"; 
            imageUri += "/GetImageTile?auth="; 
            imageUri += authenticationCode; 
            // this the image instance UID, change this if you want to retrieve anything else.  
            imageUri += "&instance=0.0.0.0.1.373.3.18.920663105"; 
            mrtiInfo.imageUri = imageUri; 
 
 
            // set this info to the cell frame.  
            cellFrame.mrtiInfo = mrtiInfo; 
 
 
            // now we need to set the information for the image so we can do window level.  
            var imageInfo = new lt.Controls.Medical.DICOMImageInformation(); 
 
 
            // set the image width and height.  
            imageInfo.width = 512; 
            imageInfo.height = 512; 
 
            // bits per pixel for the image  
            imageInfo.bitsPerPixel = 16; 
            // low and high bit.  
            imageInfo.lowBit = 0; 
            imageInfo.highBit = 11; 
 
            // other information, setting some of them to zero means that the toolkit will try and calculate it by itself, but you can always get those values from the DicomDataSet.  
            imageInfo.autoScaleIntercept = 0; 
            imageInfo.autoScaleSlope = 1; 
            imageInfo.minValue = 0; 
            imageInfo.maxValue = 0; 
            imageInfo.windowWidth = 1079; 
            imageInfo.windowCenter = 539; 
            imageInfo.signed = false; 
            imageInfo.photometricInterpretation = 'MONOCHROME2'; 
            imageInfo.firstStoredPixelValueMapped = 0; 
 
            // set these information to the frame.  
 
            cellFrame.set_information(imageInfo); 
         } 
      }; 
 
      // We are trying here to get an image from the Leadtools database, we need to login and get the authentication code.  
      xhttp.open("POST", "https://medicaldemos.leadtools.com/MedicalViewerServiceAsp22/api/auth/AuthenticateUser", true); 
      xhttp.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); 
      // we log in as a 'guest', after calling the below line, we will receive the authentication code sent via 'onreadystatechange' above.  
      xhttp.send(JSON.stringify({ userName: 'guest', password: 'guest', userData: '' })); 
 
      const exampleButton = document.getElementById("exampleButton"); 
      exampleButton.addEventListener("click", () => { 
         this.timesClicked++; 
         // Run the example 
         if (callback) 
            callback(this.medicalViewer); 
      }); 
   } 
} 
<!doctype html> 
<html lang="en"> 
   <title>Menu Item Example</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> 
   <script src="../../LT/Leadtools.Controls.Medical.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  oncontextmenu="return false;"> 
   <p>Right click on empty cell and select the item to move the cell to the clicked location.</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.MedicalViewer.MenuItem(); 
 
   }; 
</script> 
</html> 
Remarks

Call Items to add items to the menu. If the menu does not have any items, it will not be displayed. To display the menu, fill it with items using the Items collection, then call the Show method.

Requirements

Target Platforms

Help Version 22.0.2023.2.14
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Controls.Medical Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.