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d6c359645c
* Allow to change terminal font size in settings. Allow to enter fullscreen mode with alt+enter. * Fix size issues
95 lines
3.3 KiB
JavaScript
95 lines
3.3 KiB
JavaScript
/**
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* Fit terminal columns and rows to the dimensions of its DOM element.
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*
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* ## Approach
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* - Rows: Truncate the division of the terminal parent element height by the terminal row height.
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*
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* - Columns: Truncate the division of the terminal parent element width by the terminal character
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* width (apply display: inline at the terminal row and truncate its width with the current
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* number of columns).
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* @module xterm/addons/fit/fit
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* @license MIT
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*/
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(function (fit) {
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if (typeof exports === 'object' && typeof module === 'object') {
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/*
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* CommonJS environment
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*/
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module.exports = fit(require('../../xterm'));
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} else if (typeof define == 'function') {
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/*
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* Require.js is available
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*/
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define(['../../xterm'], fit);
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} else {
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/*
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* Plain browser environment
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*/
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fit(window.Terminal);
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}
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})(function (Xterm) {
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var exports = {};
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exports.proposeGeometry = function (term) {
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if (!term.element.parentElement) {
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return null;
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}
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var parentElementStyle = window.getComputedStyle(term.element.parentElement),
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parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),
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parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17),
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elementStyle = window.getComputedStyle(term.element),
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elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),
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elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left')),
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availableHeight = parentElementHeight - elementPaddingVer,
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availableWidth = parentElementWidth - elementPaddingHor,
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container = term.rowContainer,
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subjectRow = term.rowContainer.firstElementChild,
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contentBuffer = subjectRow.innerHTML,
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characterHeight,
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rows,
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characterWidth,
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cols,
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geometry;
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if (term.element.classList.contains('fullscreen')) {
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// we are in fullscreen mode and need to use element height and width directly;
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availableHeight = parseInt(elementStyle.getPropertyValue('height'));
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availableWidth = Math.max(0, parseInt(elementStyle.getPropertyValue('width')) - 17);
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}
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subjectRow.style.display = 'inline';
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subjectRow.innerHTML = 'W'; // Common character for measuring width, although on monospace
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characterWidth = subjectRow.getBoundingClientRect().width;
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subjectRow.style.display = ''; // Revert style before calculating height, since they differ.
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//characterHeight = subjectRow.getBoundingClientRect().height;
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characterHeight = parseInt(window.getComputedStyle(subjectRow).fontSize, 10)+2;
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subjectRow.innerHTML = contentBuffer;
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rows = parseInt(availableHeight / characterHeight);
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cols = parseInt(availableWidth / characterWidth);
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geometry = {cols: cols, rows: rows};
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return geometry;
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};
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exports.fit = function (term) {
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var geometry = exports.proposeGeometry(term);
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if (geometry) {
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term.resize(geometry.cols, geometry.rows);
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}
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};
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Xterm.prototype.proposeGeometry = function () {
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return exports.proposeGeometry(this);
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};
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Xterm.prototype.fit = function () {
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return exports.fit(this);
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};
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return exports;
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});
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