92 lines
3.2 KiB
TypeScript
92 lines
3.2 KiB
TypeScript
/**
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* Copyright (c) 2022 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { ISelectionRenderModel } from 'browser/renderer/shared/Types';
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import { Terminal } from 'xterm';
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class SelectionRenderModel implements ISelectionRenderModel {
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public hasSelection!: boolean;
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public columnSelectMode!: boolean;
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public viewportStartRow!: number;
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public viewportEndRow!: number;
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public viewportCappedStartRow!: number;
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public viewportCappedEndRow!: number;
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public startCol!: number;
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public endCol!: number;
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public selectionStart: [number, number] | undefined;
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public selectionEnd: [number, number] | undefined;
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constructor() {
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this.clear();
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}
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public clear(): void {
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this.hasSelection = false;
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this.columnSelectMode = false;
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this.viewportStartRow = 0;
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this.viewportEndRow = 0;
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this.viewportCappedStartRow = 0;
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this.viewportCappedEndRow = 0;
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this.startCol = 0;
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this.endCol = 0;
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this.selectionStart = undefined;
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this.selectionEnd = undefined;
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}
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public update(terminal: Terminal, start: [number, number] | undefined, end: [number, number] | undefined, columnSelectMode: boolean = false): void {
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this.selectionStart = start;
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this.selectionEnd = end;
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// Selection does not exist
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if (!start || !end || (start[0] === end[0] && start[1] === end[1])) {
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this.clear();
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return;
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}
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// Translate from buffer position to viewport position
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const viewportStartRow = start[1] - terminal.buffer.active.viewportY;
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const viewportEndRow = end[1] - terminal.buffer.active.viewportY;
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const viewportCappedStartRow = Math.max(viewportStartRow, 0);
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const viewportCappedEndRow = Math.min(viewportEndRow, terminal.rows - 1);
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// No need to draw the selection
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if (viewportCappedStartRow >= terminal.rows || viewportCappedEndRow < 0) {
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this.clear();
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return;
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}
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this.hasSelection = true;
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this.columnSelectMode = columnSelectMode;
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this.viewportStartRow = viewportStartRow;
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this.viewportEndRow = viewportEndRow;
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this.viewportCappedStartRow = viewportCappedStartRow;
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this.viewportCappedEndRow = viewportCappedEndRow;
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this.startCol = start[0];
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this.endCol = end[0];
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}
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public isCellSelected(terminal: Terminal, x: number, y: number): boolean {
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if (!this.hasSelection) {
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return false;
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}
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y -= terminal.buffer.active.viewportY;
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if (this.columnSelectMode) {
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if (this.startCol <= this.endCol) {
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return x >= this.startCol && y >= this.viewportCappedStartRow &&
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x < this.endCol && y <= this.viewportCappedEndRow;
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}
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return x < this.startCol && y >= this.viewportCappedStartRow &&
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x >= this.endCol && y <= this.viewportCappedEndRow;
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}
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return (y > this.viewportStartRow && y < this.viewportEndRow) ||
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(this.viewportStartRow === this.viewportEndRow && y === this.viewportStartRow && x >= this.startCol && x < this.endCol) ||
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(this.viewportStartRow < this.viewportEndRow && y === this.viewportEndRow && x < this.endCol) ||
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(this.viewportStartRow < this.viewportEndRow && y === this.viewportStartRow && x >= this.startCol);
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}
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}
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export function createSelectionRenderModel(): ISelectionRenderModel {
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return new SelectionRenderModel();
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}
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