@progress/kendo-angular-gantt
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Kendo UI Angular Gantt
30 lines (29 loc) • 1.65 kB
TypeScript
/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { ScrollAxis, ScrollDirection } from './drag-scroll-settings';
/**
* @hidden
*
* Scrolls the element in the given direction by the provided step in the provided scroll axis.
*
* If the targeted scroll incrementation doesn't yield any result due to device pixel ratio issues (https://github.com/dimitar-pechev/RenderingIndependentScrollOffsets#readme),
* increments the step with 1px and again attempts to change the scrollTop of the element, until the content is actually scrolled.
*
* Cuts the operation short after 20 unsuccessful attempts to prevent infinite loops in possible corner-case scenarios.
*/
export declare const scrollElement: (element: Element, step: number, direction: ScrollDirection, scrollAxis: ScrollAxis) => void;
/**
* @hidden
*
* As client coordinates are not restricted to the range 0px - {viewportSize}px, but can have negative starting values or ending values greater than the viewport size,
* this function extracts the visible boundaries of the provided element - fall-backing to 0 when the top/left are below 0,
* and fall-backing to the actual visible size of the container for bottom/right.
*/
export declare const getViewportBoundaries: (element: Element) => {
top: number;
left: number;
right: number;
bottom: number;
};