44 lines
1.2 KiB
TypeScript
44 lines
1.2 KiB
TypeScript
/**
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* Copyright (c) 2018 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { ICursorRenderModel, IRenderModel } from './Types';
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import { ISelectionRenderModel } from 'browser/renderer/shared/Types';
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import { createSelectionRenderModel } from 'browser/renderer/shared/SelectionRenderModel';
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export const enum RenderModelConstants {
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INDICIES_PER_CELL = 4,
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BG_OFFSET = 1,
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FG_OFFSET = 2,
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EXT_OFFSET = 3
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}
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export const COMBINED_CHAR_BIT_MASK = 0x80000000;
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export class RenderModel implements IRenderModel {
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public cells: Uint32Array;
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public lineLengths: Uint32Array;
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public selection: ISelectionRenderModel;
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public cursor?: ICursorRenderModel;
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constructor() {
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this.cells = new Uint32Array(0);
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this.lineLengths = new Uint32Array(0);
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this.selection = createSelectionRenderModel();
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}
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public resize(cols: number, rows: number): void {
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const indexCount = cols * rows * RenderModelConstants.INDICIES_PER_CELL;
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if (indexCount !== this.cells.length) {
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this.cells = new Uint32Array(indexCount);
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this.lineLengths = new Uint32Array(rows);
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}
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}
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public clear(): void {
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this.cells.fill(0, 0);
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this.lineLengths.fill(0, 0);
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}
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}
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