84 lines
2.7 KiB
TypeScript
84 lines
2.7 KiB
TypeScript
/**
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* Copyright (c) 2017 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { IRenderDimensions } from 'browser/renderer/Types';
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import { BaseRenderLayer } from './BaseRenderLayer';
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import { INVERTED_DEFAULT_COLOR } from 'browser/renderer/atlas/Constants';
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import { is256Color } from 'browser/renderer/atlas/CharAtlasUtils';
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import { IColorSet, ILinkifierEvent, ILinkifier, ILinkifier2 } from 'browser/Types';
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import { IBufferService, IOptionsService } from 'common/services/Services';
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export class LinkRenderLayer extends BaseRenderLayer {
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private _state: ILinkifierEvent | undefined;
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constructor(
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container: HTMLElement,
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zIndex: number,
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colors: IColorSet,
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rendererId: number,
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linkifier: ILinkifier,
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linkifier2: ILinkifier2,
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readonly bufferService: IBufferService,
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readonly optionsService: IOptionsService
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) {
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super(container, 'link', zIndex, true, colors, rendererId, bufferService, optionsService);
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linkifier.onLinkHover(e => this._onLinkHover(e));
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linkifier.onLinkLeave(e => this._onLinkLeave(e));
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linkifier2.onLinkHover(e => this._onLinkHover(e));
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linkifier2.onLinkLeave(e => this._onLinkLeave(e));
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}
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public resize(dim: IRenderDimensions): void {
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super.resize(dim);
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// Resizing the canvas discards the contents of the canvas so clear state
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this._state = undefined;
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}
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public reset(): void {
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this._clearCurrentLink();
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}
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private _clearCurrentLink(): void {
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if (this._state) {
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this._clearCells(this._state.x1, this._state.y1, this._state.cols - this._state.x1, 1);
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const middleRowCount = this._state.y2 - this._state.y1 - 1;
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if (middleRowCount > 0) {
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this._clearCells(0, this._state.y1 + 1, this._state.cols, middleRowCount);
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}
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this._clearCells(0, this._state.y2, this._state.x2, 1);
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this._state = undefined;
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}
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}
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private _onLinkHover(e: ILinkifierEvent): void {
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if (e.fg === INVERTED_DEFAULT_COLOR) {
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this._ctx.fillStyle = this._colors.background.css;
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} else if (e.fg && is256Color(e.fg)) {
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// 256 color support
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this._ctx.fillStyle = this._colors.ansi[e.fg].css;
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} else {
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this._ctx.fillStyle = this._colors.foreground.css;
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}
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if (e.y1 === e.y2) {
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// Single line link
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this._fillBottomLineAtCells(e.x1, e.y1, e.x2 - e.x1);
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} else {
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// Multi-line link
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this._fillBottomLineAtCells(e.x1, e.y1, e.cols - e.x1);
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for (let y = e.y1 + 1; y < e.y2; y++) {
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this._fillBottomLineAtCells(0, y, e.cols);
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}
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this._fillBottomLineAtCells(0, e.y2, e.x2);
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}
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this._state = e;
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}
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private _onLinkLeave(e: ILinkifierEvent): void {
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this._clearCurrentLink();
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}
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}
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