86 lines
3.6 KiB
TypeScript
86 lines
3.6 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { AbstractScrollbar, ISimplifiedPointerEvent, IScrollbarHost } from './abstractScrollbar';
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import { IScrollableElementResolvedOptions } from './scrollableElementOptions';
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import { ScrollbarState } from './scrollbarState';
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import { INewScrollPosition, Scrollable, ScrollbarVisibility, IScrollEvent } from './scrollable';
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export class HorizontalScrollbar extends AbstractScrollbar {
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constructor(scrollable: Scrollable, options: IScrollableElementResolvedOptions, host: IScrollbarHost) {
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const scrollDimensions = scrollable.getScrollDimensions();
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const scrollPosition = scrollable.getCurrentScrollPosition();
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super({
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lazyRender: options.lazyRender,
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host: host,
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scrollbarState: new ScrollbarState(
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(options.horizontalHasArrows ? options.horizontalScrollbarSize : 0),
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(options.horizontal === ScrollbarVisibility.HIDDEN ? 0 : options.horizontalScrollbarSize),
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(options.vertical === ScrollbarVisibility.HIDDEN ? 0 : options.verticalScrollbarSize),
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scrollDimensions.width,
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scrollDimensions.scrollWidth,
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scrollPosition.scrollLeft
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),
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visibility: options.horizontal,
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extraScrollbarClassName: 'xterm-horizontal',
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scrollable: scrollable,
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scrollByPage: options.scrollByPage
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});
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if (options.horizontalHasArrows) {
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throw new Error('horizontalHasArrows is not supported in xterm.js');
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}
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this._createSlider(Math.floor((options.horizontalScrollbarSize - options.horizontalSliderSize) / 2), 0, undefined, options.horizontalSliderSize);
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}
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protected _updateSlider(sliderSize: number, sliderPosition: number): void {
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this.slider.setWidth(sliderSize);
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this.slider.setLeft(sliderPosition);
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}
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protected _renderDomNode(largeSize: number, smallSize: number): void {
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this.domNode.setWidth(largeSize);
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this.domNode.setHeight(smallSize);
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this.domNode.setLeft(0);
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this.domNode.setBottom(0);
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}
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public handleScroll(e: IScrollEvent): boolean {
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this._shouldRender = this._handleElementScrollSize(e.scrollWidth) || this._shouldRender;
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this._shouldRender = this._handleElementScrollPosition(e.scrollLeft) || this._shouldRender;
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this._shouldRender = this._handleElementSize(e.width) || this._shouldRender;
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return this._shouldRender;
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}
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protected _pointerDownRelativePosition(offsetX: number, offsetY: number): number {
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return offsetX;
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}
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protected _sliderPointerPosition(e: ISimplifiedPointerEvent): number {
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return e.pageX;
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}
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protected _sliderOrthogonalPointerPosition(e: ISimplifiedPointerEvent): number {
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return e.pageY;
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}
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protected _updateScrollbarSize(size: number): void {
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this.slider.setHeight(size);
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}
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public writeScrollPosition(target: INewScrollPosition, scrollPosition: number): void {
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target.scrollLeft = scrollPosition;
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}
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public updateOptions(options: IScrollableElementResolvedOptions): void {
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this.updateScrollbarSize(options.horizontal === ScrollbarVisibility.HIDDEN ? 0 : options.horizontalScrollbarSize);
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this._scrollbarState.setOppositeScrollbarSize(options.vertical === ScrollbarVisibility.HIDDEN ? 0 : options.verticalScrollbarSize);
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this._visibilityController.setVisibility(options.horizontal);
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this._scrollByPage = options.scrollByPage;
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}
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}
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