65 lines
2.3 KiB
TypeScript
65 lines
2.3 KiB
TypeScript
/**
|
|
* Copyright (c) 2014 The xterm.js authors. All rights reserved.
|
|
* @license MIT
|
|
*
|
|
* Fit terminal columns and rows to the dimensions of its DOM element.
|
|
*
|
|
* ## Approach
|
|
*
|
|
* Rows: Truncate the division of the terminal parent element height by the
|
|
* terminal row height.
|
|
* Columns: Truncate the division of the terminal parent element width by the
|
|
* terminal character width (apply display: inline at the terminal
|
|
* row and truncate its width with the current number of columns).
|
|
*/
|
|
|
|
/// <reference path="../../../typings/xterm.d.ts"/>
|
|
|
|
import { Terminal } from 'xterm';
|
|
|
|
export interface IGeometry {
|
|
rows: number;
|
|
cols: number;
|
|
}
|
|
|
|
export function proposeGeometry(term: Terminal): IGeometry {
|
|
if (!term.element.parentElement) {
|
|
return null;
|
|
}
|
|
const parentElementStyle = window.getComputedStyle(term.element.parentElement);
|
|
const parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height'));
|
|
const parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17);
|
|
const elementStyle = window.getComputedStyle(term.element);
|
|
const elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom'));
|
|
const elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left'));
|
|
const availableHeight = parentElementHeight - elementPaddingVer;
|
|
const availableWidth = parentElementWidth - elementPaddingHor;
|
|
const geometry = {
|
|
cols: Math.floor(availableWidth / (<any>term).renderer.dimensions.actualCellWidth),
|
|
rows: Math.floor(availableHeight / (<any>term).renderer.dimensions.actualCellHeight)
|
|
};
|
|
|
|
return geometry;
|
|
}
|
|
|
|
export function fit(term: Terminal): void {
|
|
const geometry = proposeGeometry(term);
|
|
if (geometry) {
|
|
// Force a full render
|
|
if (term.rows !== geometry.rows || term.cols !== geometry.cols) {
|
|
(<any>term).renderer.clear();
|
|
term.resize(geometry.cols, geometry.rows);
|
|
}
|
|
}
|
|
}
|
|
|
|
export function apply(terminalConstructor: typeof Terminal): void {
|
|
(<any>terminalConstructor.prototype).proposeGeometry = function (): IGeometry {
|
|
return proposeGeometry(this);
|
|
};
|
|
|
|
(<any>terminalConstructor.prototype).fit = function (): void {
|
|
fit(this);
|
|
};
|
|
}
|