ZoomOutButtonUI Class

Namespace:
@gembox/pdfviewer
Assembly:
@gembox/pdfviewer

Represents a button in the PDF viewer toolbar that decreases the magnification level of the document view.

export declare class ZoomOutButtonUI implements VisibilityElement, EventElement<ZoomOutButtonEventMap>
Inheritance:
ZoomOutButtonUI
Remarks

This component provides functionality for zooming out on the document, handling zoom changes with before/after information.

Properties

isVisible

The current visibility state of the element.

get isVisible(): boolean;
set isVisible(value: boolean);
Parameters
value

The new visibility state (true to show, false to hide).

Methods

addEventListener(K, (event: ZoomOutButtonEventMap[K]) => void)

Adds an event listener for the specified event type.

addEventListener<K extends keyof ZoomOutButtonEventMap>(type: K, listener: (event: ZoomOutButtonEventMap[K]) => void): void;
Parameters
type

The event type/name to listen for.

listener

The callback function that will be invoked when the event is emitted.

click

Decreases the zoom level by one step.

click(): Promise<void>;
Remarks

This method calculates the previous appropriate zoom level based on predefined steps and emits ZoomOutClickEvent before applying the change.

Implements