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/*
* 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)
*/
(function (fit) {
if (typeof exports === 'object' && typeof module === 'object') {
/*
* CommonJS environment
*/
module.exports = fit(require('../../xterm'));
} else if (typeof define == 'function') {
/*
* Require.js is available
*/
define(['../../xterm'], fit);
} else {
/*
* Plain browser environment
*/
fit(window.Terminal);
}
})(function (Xterm) {
/**
* This module provides methods for fitting a terminal's size to a parent container.
*
* @module xterm/addons/fit/fit
*/
var exports = {};
exports.proposeGeometry = function (term) {
var parentElementStyle = window.getComputedStyle(term.element.parentElement),
parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),
parentElementWidth = parseInt(parentElementStyle.getPropertyValue('width')),
elementStyle = window.getComputedStyle(term.element),
elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),
elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left')),
availableHeight = parentElementHeight - elementPaddingVer,
availableWidth = parentElementWidth - elementPaddingHor,
container = term.rowContainer,
subjectRow = term.rowContainer.firstElementChild,
contentBuffer = subjectRow.innerHTML,
characterHeight,
rows,
characterWidth,
cols,
geometry;
subjectRow.style.display = 'inline';
subjectRow.innerHTML = 'W'; // Common character for measuring width, although on monospace
characterWidth = subjectRow.getBoundingClientRect().width;
subjectRow.style.display = ''; // Revert style before calculating height, since they differ.
characterHeight = parseInt(subjectRow.offsetHeight);
subjectRow.innerHTML = contentBuffer;
rows = parseInt(availableHeight / characterHeight);
cols = parseInt(availableWidth / characterWidth) - 1;
geometry = {cols: cols, rows: rows};
return geometry;
};
exports.fit = function (term) {
var geometry = exports.proposeGeometry(term);
term.resize(geometry.cols, geometry.rows);
};
Xterm.prototype.proposeGeometry = function () {
return exports.proposeGeometry(this);
};
Xterm.prototype.fit = function () {
return exports.fit(this);
};
return exports;
});
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