Specifies options to control which display properties get reset when an image is set into the control.
lt.Controls.ImageViewerAutoResetOptions = {
none: 0x00000000,
scroll: 0x00000001,
zoom: 0x00000002,
transformation: 0x00000004,
effects: 0x00000008,
all: 0x0000000F
}
lt.Controls.ImageViewerAutoResetOptions = {
none: 0x00000000,
scroll: 0x00000001,
zoom: 0x00000002,
transformation: 0x00000004,
effects: 0x00000008,
all: 0x0000000F
}
0x00000000 |
None |
(0) None of the properties will reset back to their default values. |
0x00000001 |
Scroll |
(1) The horizontal and vertical scroll offsets (ImageViewer.ScrollOffset) location will reset back to the top-left position (0,0) |
0x00000002 |
Zoom |
(2) Reset ImageViewer.ScaleFactor back to 1.0 and ImageViewer.SizeMode to ControlSizeMode. This will call Zoom to set these values. |
0x00000004 |
Transformation |
(4) Reset ImageViewer.Flip, ImageViewer.Reverse and ImageViewer.RotateAngle back to false, false and 0 respectively. |
0x00000008 |
Effects |
(8) Resets ImageViewer.Invert back to false |
0x0000000F |
All |
(16) All the properties will reset back to their default values |
Use the ImageViewer.AutoResetOptions property to control which of the display properties of the control resets back to its default value when a new image is set in the viewer.
Use a logical OR operation to combine any of the above options together. By setting these options, you can achieve effects such as if the control has a scale factor value of 1.5 (150 percent) and a new image is set, the scale factor does not reset and stays at 150 percent instead of going back to 100 percent.
Used when the viewer is not used with multiple items. For more information, refer to Image Viewer in Single Item Mode.
import { ImageViewer_Example } from "../ImageViewer";
export class ImageViewer_AutoResetOptionsExample {
private viewerExample;
constructor() {
this.viewerExample = new ImageViewer_Example(this.run);
}
private run = (viewer: lt.Controls.ImageViewer) => {
viewer.itemBorderThickness = 5;
viewer.rotateAngle = 15;
// Switch between these values "none" and "all" to see the difference
viewer.autoResetOptions = lt.Controls.ImageViewerAutoResetOptions.none;
//viewer.autoResetOptions = lt.Controls.ImageViewerAutoResetOptions.all;
setTimeout(() => {
viewer.imageUrl = "https://demo.leadtools.com/images/png/pngimage.png";
}, 1000);
}
}
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 ImageViewer_AutoResetOptionsExample {
viewerExample;
constructor() {
this.viewerExample = new ImageViewer_Example(this.run);
}
run = (viewer) => {
viewer.itemBorderThickness = 5;
viewer.rotateAngle = 15;
// Switch between these values "none" and "all" to see the difference
viewer.autoResetOptions = lt.Controls.ImageViewerAutoResetOptions.none;
//viewer.autoResetOptions = lt.Controls.ImageViewerAutoResetOptions.all;
setTimeout(() => {
viewer.imageUrl = "https://demo.leadtools.com/images/png/pngimage.png";
}, 1000);
}
}
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 | AutoResetOptions</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.ImageViewer.AutoResetOptions();
};
</script>
</html>
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document