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82 lines
2.8 KiB
82 lines
2.8 KiB
7 months ago
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/**
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* Copyright (c) 2014 The xterm.js authors. All rights reserved.
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* @license MIT
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*
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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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*
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* Rows: Truncate the division of the terminal parent element height by the
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* terminal row height.
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* Columns: Truncate the division of the terminal parent element width by the
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* terminal character width (apply display: inline at the terminal
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* row and truncate its width with the current number of columns).
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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('../../Terminal').Terminal);
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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 (Terminal) {
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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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var parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height'));
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var parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17);
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var elementStyle = window.getComputedStyle(term.element);
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var elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom'));
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var elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left'));
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var availableHeight = parentElementHeight - elementPaddingVer;
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var availableWidth = parentElementWidth - elementPaddingHor;
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var geometry = {
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cols: Math.floor(availableWidth / term.charMeasure.width),
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rows: Math.floor(availableHeight / Math.floor(term.charMeasure.height * term.getOption('lineHeight')))
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};
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return geometry;
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};
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exports.fit = function (term) {
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// Wrap fit in a setTimeout as charMeasure needs time to get initialized
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// after calling Terminal.open
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setTimeout(function () {
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var geometry = exports.proposeGeometry(term);
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if (geometry) {
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// Force a full render
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if (term.rows !== geometry.rows || term.cols !== geometry.cols) {
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term.renderer.clear();
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term.resize(geometry.cols, geometry.rows);
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}
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}
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}, 0);
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};
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Terminal.prototype.proposeGeometry = function () {
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return exports.proposeGeometry(this);
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};
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Terminal.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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