90 lines
2.8 KiB
TypeScript
90 lines
2.8 KiB
TypeScript
/**
|
|
* Copyright (c) 2017 The xterm.js authors. All rights reserved.
|
|
* @license MIT
|
|
*/
|
|
|
|
import { Terminal, ITerminalAddon } from 'xterm';
|
|
import { IRenderDimensions } from 'browser/renderer/shared/Types';
|
|
|
|
interface ITerminalDimensions {
|
|
/**
|
|
* The number of rows in the terminal.
|
|
*/
|
|
rows: number;
|
|
|
|
/**
|
|
* The number of columns in the terminal.
|
|
*/
|
|
cols: number;
|
|
}
|
|
|
|
const MINIMUM_COLS = 2;
|
|
const MINIMUM_ROWS = 1;
|
|
|
|
export class FitAddon implements ITerminalAddon {
|
|
private _terminal: Terminal | undefined;
|
|
|
|
public activate(terminal: Terminal): void {
|
|
this._terminal = terminal;
|
|
}
|
|
|
|
public dispose(): void {}
|
|
|
|
public fit(): void {
|
|
const dims = this.proposeDimensions();
|
|
if (!dims || !this._terminal || isNaN(dims.cols) || isNaN(dims.rows)) {
|
|
return;
|
|
}
|
|
|
|
// TODO: Remove reliance on private API
|
|
const core = (this._terminal as any)._core;
|
|
|
|
// Force a full render
|
|
if (this._terminal.rows !== dims.rows || this._terminal.cols !== dims.cols) {
|
|
core._renderService.clear();
|
|
this._terminal.resize(dims.cols, dims.rows);
|
|
}
|
|
}
|
|
|
|
public proposeDimensions(): ITerminalDimensions | undefined {
|
|
if (!this._terminal) {
|
|
return undefined;
|
|
}
|
|
|
|
if (!this._terminal.element || !this._terminal.element.parentElement) {
|
|
return undefined;
|
|
}
|
|
|
|
// TODO: Remove reliance on private API
|
|
const core = (this._terminal as any)._core;
|
|
const dims: IRenderDimensions = core._renderService.dimensions;
|
|
|
|
if (dims.css.cell.width === 0 || dims.css.cell.height === 0) {
|
|
return undefined;
|
|
}
|
|
|
|
const scrollbarWidth = this._terminal.options.scrollback === 0 ?
|
|
0 : core.viewport.scrollBarWidth;
|
|
|
|
const parentElementStyle = window.getComputedStyle(this._terminal.element.parentElement);
|
|
const parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height'));
|
|
const parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')));
|
|
const elementStyle = window.getComputedStyle(this._terminal.element);
|
|
const elementPadding = {
|
|
top: parseInt(elementStyle.getPropertyValue('padding-top')),
|
|
bottom: parseInt(elementStyle.getPropertyValue('padding-bottom')),
|
|
right: parseInt(elementStyle.getPropertyValue('padding-right')),
|
|
left: parseInt(elementStyle.getPropertyValue('padding-left'))
|
|
};
|
|
const elementPaddingVer = elementPadding.top + elementPadding.bottom;
|
|
const elementPaddingHor = elementPadding.right + elementPadding.left;
|
|
const availableHeight = parentElementHeight - elementPaddingVer;
|
|
const availableWidth = parentElementWidth - elementPaddingHor - scrollbarWidth;
|
|
const geometry = {
|
|
cols: Math.max(MINIMUM_COLS, Math.floor(availableWidth / dims.css.cell.width)),
|
|
rows: Math.max(MINIMUM_ROWS, Math.floor(availableHeight / dims.css.cell.height))
|
|
};
|
|
return geometry;
|
|
}
|
|
}
|