MOve CharMeasure into ui/

src/utils/CharMeasure.test.ts

@@ -1,54 +0,0 @@
-/**
- * Copyright (c) 2016 The xterm.js authors. All rights reserved.
- * @license MIT
- */
-
-import jsdom = require('jsdom');
-import { ICharMeasure } from '../Types';
-import { assert } from 'chai';
-import { CharMeasure } from './CharMeasure';
-
-describe('CharMeasure', () => {
-  let dom: jsdom.JSDOM;
-  let window: Window;
-  let document: Document;
-  let container: HTMLElement;
-  let charMeasure: ICharMeasure;
-
-  beforeEach(() => {
-    dom = new jsdom.JSDOM('');
-    window = dom.window;
-    document = window.document;
-    container = document.createElement('div');
-    document.body.appendChild(container);
-    charMeasure = new CharMeasure(document, container);
-  });
-
-  describe('measure', () => {
-    it('should have _measureElement', () => {
-      assert.isDefined((<any>charMeasure)._measureElement, 'new CharMeasure() should have created _measureElement');
-    });
-
-    it('should be performed sync', () => {
-      // Mock getBoundingClientRect since jsdom doesn't have a layout engine
-      (<any>charMeasure)._measureElement.getBoundingClientRect = () => {
-        return { width: 1, height: 1 };
-      };
-      charMeasure.measure({});
-      assert.equal(charMeasure.height, 1);
-      assert.equal(charMeasure.width, 1);
-    });
-
-    it('should NOT do a measure when the parent is hidden', done => {
-      charMeasure.measure({});
-      setTimeout(() => {
-        const firstWidth = charMeasure.width;
-        container.style.display = 'none';
-        container.style.fontSize = '2em';
-        charMeasure.measure({});
-        assert.equal(charMeasure.width, firstWidth);
-        done();
-      }, 0);
-    });
-  });
-});

src/utils/CharMeasure.ts

@@ -1,55 +0,0 @@
-/**
- * Copyright (c) 2016 The xterm.js authors. All rights reserved.
- * @license MIT
- */
-
-import { ICharMeasure, ITerminalOptions } from '../Types';
-import { EventEmitter } from '../EventEmitter';
-
-/**
- * Utility class that measures the size of a character. Measurements are done in
- * the DOM rather than with a canvas context because support for extracting the
- * height of characters is patchy across browsers.
- */
-export class CharMeasure extends EventEmitter implements ICharMeasure {
-  private _document: Document;
-  private _parentElement: HTMLElement;
-  private _measureElement: HTMLElement;
-  private _width: number;
-  private _height: number;
-
-  constructor(document: Document, parentElement: HTMLElement) {
-    super();
-    this._document = document;
-    this._parentElement = parentElement;
-    this._measureElement = this._document.createElement('span');
-    this._measureElement.classList.add('xterm-char-measure-element');
-    this._measureElement.textContent = 'W';
-    this._measureElement.setAttribute('aria-hidden', 'true');
-    this._parentElement.appendChild(this._measureElement);
-  }
-
-  public get width(): number {
-    return this._width;
-  }
-
-  public get height(): number {
-    return this._height;
-  }
-
-  public measure(options: ITerminalOptions): void {
-  this._measureElement.style.fontFamily = options.fontFamily;
-    this._measureElement.style.fontSize = `${options.fontSize}px`;
-    const geometry = this._measureElement.getBoundingClientRect();
-    // The element is likely currently display:none, we should retain the
-    // previous value.
-    if (geometry.width === 0 || geometry.height === 0) {
-      return;
-    }
-    if (this._width !== geometry.width || this._height !== geometry.height) {
-      this._width = geometry.width;
-      this._height = Math.ceil(geometry.height);
-      this.emit('charsizechanged');
-    }
-  }
-}