> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/annotation/annotation-types/ellipseannotation.md).
# Ellipse Annotations
Learn how to use ellipse annotations to highlight areas on a document effectively. Customize fill, stroke colors, and border styles for attention-grabbing results. Explore XFDF element name: circle an
Ellipse annotations are one of the basic shapes for annotating. You can use this to circle certain areas on a document to bring attention to them.
Ellipse annotations can have both a fill and stroke color. The stroke or border style can also be changed to between a solid or dashed. The cloudy style is not supported.
## Instantiation
{% tabs %}
{% tab title="JavaScript (SDK v8.0+)" %}
{% code lineNumbers="true" %}
```js
WebViewer(...)
.then(instance => {
const { documentViewer, annotationManager, Annotations } = instance.Core;
documentViewer.addEventListener('annotationsLoaded', () => {
const annot = new Annotations.EllipseAnnotation({
PageNumber: 1,
X: 100,
Y: 50,
Width: 150,
Height: 25,
StrokeColor: new Annotations.Color(0, 255, 0, 1),
});
annotationManager.addAnnotation(annot);
annotationManager.redrawAnnotation(annot);
});
});
```
{% endcode %}
[DocumentViewer#annotationsLoaded](https://sdk.apryse.com/api/web/Core.DocumentViewer.html#event:annotationsLoaded) [EllipseAnnotation](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html) [Color](https://sdk.apryse.com/api/web/Core.Annotations.Color.html) [AnnotationManager.addAnnotation](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#addAnnotation) [AnnotationManager.redrawAnnotation](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#redrawAnnotation)
{% endtab %}
{% tab title="JavaScript (SDK v6.0+)" %}
{% code lineNumbers="true" %}
```js
WebViewer(...)
.then(instance => {
const { docViewer, annotManager, Annotations } = instance;
docViewer.on('annotationsLoaded', () => {
const annot = new Annotations.EllipseAnnotation();
annot.PageNumber = 1;
annot.X = 100;
annot.Y = 50;
annot.Width = 150;
annot.Height = 25;
annot.StrokeColor = new Annotations.Color(0, 255, 0, 1);
annotManager.addAnnotation(annot);
annotManager.redrawAnnotation(annot);
});
});
```
{% endcode %}
[DocumentViewer#annotationsLoaded](https://sdk.apryse.com/api/web/Core.DocumentViewer.html#event:annotationsLoaded) [EllipseAnnotation](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html) [Color](https://sdk.apryse.com/api/web/Core.Annotations.Color.html) [AnnotationManager.addAnnotation](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#addAnnotation) [AnnotationManager.redrawAnnotation](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#redrawAnnotation)
{% endtab %}
{% endtabs %}
## XFDF
Element name: `circle`
{% tabs %}
{% tab title="Shell" %}
{% code lineNumbers="true" %}
```sh
```
{% endcode %}
{% endtab %}
{% endtabs %}
## Required properties
### PageNumber
Gets or sets the page number of a document that the annotation appears on.
### X
Gets or sets the annotation's x-axis position.
### Y
Gets or sets the annotation's y-axis position.
### Height
Gets or sets the height of the annotation.
### Width
Gets or sets the width of the annotation.
## Notable properties
For the full list of properties, please visit the annotation's [API docs](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html).
### FillColor
Gets or sets the color of the annotation's interior.
### StrokeColor
Gets or sets the color of the annotation's stroke.
### StrokeThickness
Gets or sets the width of the annotation's stroke outline.
### Style
Gets or sets the border style of an annotation. Possible styles include:
* solid
* dash
### Dashes
Gets or sets the border dash style of an annotation. This expects a string representing the length of dashes and spacing inbetween, delimited by commas (ex. `3, 3`). You can specify any amount of lengths but, an odd number of values will be made even by cloning it as a second set. To understand further, you can read more about the [`setLineDash`](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash/) API.
### Author
The author of the annotation.
### Color
Gets or sets the annotation's stroke color.
### Hidden
Gets or sets whether the annotation is hidden.
### Invisible
Gets or sets whether the annotation is invisible, only if it is an unknown annotation type. Generally for hiding annotations you should use "Hidden".
### IsClickableOutsideRect
Gets or sets whether any parts of the annotation drawn outside of the rect are clickable.
### Listable
Gets or sets whether the annotation should be listed in annotation lists. If set to false, the annotation will also become unselectable.
### Locked
Gets or sets whether the annotation is locked or not. If it's locked it can't be edited or deleted, but the note can be edited.
### LockedContents
Gets or sets whether the annotation contents are locked or not. If the contents are locked then note can't be edited but the annotation can be edited or deleted.
### NoDelete
Gets or sets if this annotation can be deleted.
### NoMove
Gets or sets whether or not the annotation can be moved.
### NoResize
Gets or sets if this annotation can be resized by the user.
### NoRotate
Gets or sets if this annotation can be rotated.
### NoView
Gets or sets whether the annotation is visible on the screen. Differs from Hidden in that it can still be printed if the print flag is set.
### NoZoom
Gets or sets if this annotation scales with the page.
### Opacity
Gets or sets the opacity of the annotation.
### Printable
Gets or sets whether the annotation should be displayed when printing the page.
### ReadOnly
Gets or sets whether the annotation is readonly or not. If it's readonly both the annotation itself and its note can't be edited or deleted.
### ToggleNoView
Gets or sets whether the ToggleNoView flag is set on the annotation.
## Useful methods
### setRect
Although ellipse annotations have both [`move`](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#move) and [`resize`](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#resize) APIs, it also provides a [`setRect`](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#setRect) API which effectively does both which makes it worthy to note.
{% tabs %}
{% tab title="JavaScript (SDK v8.0+)" %}
{% code lineNumbers="true" %}
```js
WebViewer(...)
.then(instance => {
const { annotationManager, Annotations } = instance.Core;
annotationManager.addEventListener('annotationChanged', (annotations, action) => {
if (action === 'add') {
annotations.forEach(annot => {
if (annot instanceof Annotations.EllipseAnnotation) {
const rect = annot.getRect();
rect.X = Math.round(rect.X);
rect.Y = Math.round(rect.Y);
rect.Width = Math.round(rect.Width);
rect.Height = Math.round(rect.Height);
annot.setRect(rect);
}
});
}
});
});
```
{% endcode %}
[AnnotationManager#annotationChanged](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#event:annotationChanged) [EllipseAnnotation.getRect](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#getRect) [EllipseAnnotation.setRect](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#setRect)
{% endtab %}
{% tab title="JavaScript (SDK v6.0+)" %}
{% code lineNumbers="true" %}
```js
WebViewer(...)
.then(instance => {
const { annotManager, Annotations } = instance.Core;
annotManager.on('annotationChanged', (annotations, action) => {
if (action === 'add') {
annotations.forEach(annot => {
if (annot instanceof Annotations.EllipseAnnotation) {
const rect = annot.getRect();
rect.X = Math.round(rect.X);
rect.Y = Math.round(rect.Y);
rect.Width = Math.round(rect.Width);
rect.Height = Math.round(rect.Height);
annot.setRect(rect);
}
});
}
});
});
```
{% endcode %}
[AnnotationManager#annotationChanged](https://sdk.apryse.com/api/web/Core.AnnotationManager.html#event:annotationChanged) [EllipseAnnotation.getRect](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#getRect) [EllipseAnnotation.setRect](https://sdk.apryse.com/api/web/Core.Annotations.EllipseAnnotation.html#setRect)
{% endtab %}
{% endtabs %}
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