itutor-mathlive

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"><title>addons/outputSpokenText.js - MathLive Docs</title><meta name="description" content="Beautifully typeset math made easy"><meta name="keywords" content="latex, tex, math, typesetting, documentation, docs"> <meta name="viewport" content="width=device-width, initial-scale=1"> <script src="scripts/prettify/prettify.js"></script> <script src="scripts/prettify/lang-css.js"></script>  <link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:400,700|Source+Sans+Pro:400,400i,700,900" rel="stylesheet"> <style>pre.prettyprint{background: #35434e;}</style> <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow-night.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> <link type="text/css" rel="stylesheet" href="styles/custom.css"> </head> <body> <div class="forkme"><a href="https://github.com/arnog/mathlive"><img style="position: absolute; top: 0; right: 0; border: 0; z-index:1;" src="https://camo.githubusercontent.com/52760788cde945287fbb584134c4cbc2bc36f904/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f77686974655f6666666666662e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_white_ffffff.png"></a></div> <section role="navigation"> <input type="checkbox" id="nav-trigger" class="nav-trigger" /> <label for="nav-trigger" class="navicon-button x"> <div class="navicon"></div> </label> <label for="nav-trigger" class="overlay"></label> <nav id="nav"> <h3 class="group-title home"><a href="index.html">MathLive Docs</a></h3><input class="search" placeholder="Search" type="text"><div class="list"><h3 class="group-title">Tutorials</h3><ul><li><a href="tutorial-CONTRIBUTOR_GUIDE.html">Contributor Guide</a></li><li><a href="tutorial-MASTON.html">MASTON</a></li><li><a href="tutorial-USAGE_GUIDE.html">Usage Guide</a></li></ul><h3 class="group-title">Classes</h3><ul><li class="private"><a href="Context.html" class="className">Context</a><ul class='methods private'><li data-type='method' class='private'><a href="Context.html#clone" class="methodName">clone</a></li><li data-type='method' class='private'><a href="Context.html#cloneWith" class="methodName">cloneWith</a></li><li data-type='method' class='private'><a href="Context.html#getBackgroundColor" class="methodName">getBackgroundColor</a></li><li data-type='method' class='private'><a href="Context.html#getColor" class="methodName">getColor</a></li><li data-type='method' class='private'><a href="Context.html#setMathstyle" class="methodName">setMathstyle</a></li><li data-type='method' class='private'><a href="Context.html#withMathstyle" class="methodName">withMathstyle</a></li></ul></li><li><a href="EditableMathlist.html" class="className">EditableMathlist</a><ul class='methods'><li data-type='method'><a href="EditableMathlist.html#_addCell" class="methodName">_addCell</a></li><li data-type='method'><a href="EditableMathlist.html#_deleteAtoms" class="methodName">_deleteAtoms</a></li><li data-type='method'><a href="EditableMathlist.html#addColumnAfter_" class="methodName">addColumnAfter_</a></li><li data-type='method'><a href="EditableMathlist.html#addColumnBefore_" class="methodName">addColumnBefore_</a></li><li data-type='method'><a href="EditableMathlist.html#addRowAfter_" class="methodName">addRowAfter_</a></li><li data-type='method'><a href="EditableMathlist.html#addRowBefore_" class="methodName">addRowBefore_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#ancestor" class="methodName">ancestor</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#anchor" class="methodName">anchor</a></li><li data-type='method'><a href="EditableMathlist.html#applyStyle" class="methodName">applyStyle</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#commandOffsets" class="methodName">commandOffsets</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#commitCommandStringBeforeInsertionPoint" class="methodName">commitCommandStringBeforeInsertionPoint</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#contains" class="methodName">contains</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#decorateCommandStringAroundInsertionPoint" class="methodName">decorateCommandStringAroundInsertionPoint</a></li><li data-type='method'><a href="EditableMathlist.html#delete" class="methodName">delete</a></li><li data-type='method'><a href="EditableMathlist.html#delete_" class="methodName">delete_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteAll_" class="methodName">deleteAll_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteNextChar_" class="methodName">deleteNextChar_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteNextWord_" class="methodName">deleteNextWord_</a></li><li data-type='method'><a href="EditableMathlist.html#deletePreviousChar_" class="methodName">deletePreviousChar_</a></li><li data-type='method'><a href="EditableMathlist.html#deletePreviousWord_" class="methodName">deletePreviousWord_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteToGroupEnd_" class="methodName">deleteToGroupEnd_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteToGroupStart_" class="methodName">deleteToGroupStart_</a></li><li data-type='method'><a href="EditableMathlist.html#deleteToMathFieldEnd_" class="methodName">deleteToMathFieldEnd_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#endOffset" class="methodName">endOffset</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#extend" class="methodName">extend</a></li><li data-type='method'><a href="EditableMathlist.html#extendDown_" class="methodName">extendDown_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToGroupEnd_" class="methodName">extendToGroupEnd_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToGroupStart_" class="methodName">extendToGroupStart_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToMathFieldEnd_" class="methodName">extendToMathFieldEnd_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToMathFieldStart_" class="methodName">extendToMathFieldStart_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToNextBoundary_" class="methodName">extendToNextBoundary_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToNextChar_" class="methodName">extendToNextChar_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToNextWord_" class="methodName">extendToNextWord_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToPreviousBoundary_" class="methodName">extendToPreviousBoundary_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToPreviousChar_" class="methodName">extendToPreviousChar_</a></li><li data-type='method'><a href="EditableMathlist.html#extendToPreviousWord_" class="methodName">extendToPreviousWord_</a></li><li data-type='method'><a href="EditableMathlist.html#extendUp_" class="methodName">extendUp_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#extractCharactersBeforeInsertionPoint" class="methodName">extractCharactersBeforeInsertionPoint</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#extractCommandStringAroundInsertionPoint" class="methodName">extractCommandStringAroundInsertionPoint</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#extractContents" class="methodName">extractContents</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#extractContentsOrdInGroupBeforeInsertionPoint" class="methodName">extractContentsOrdInGroupBeforeInsertionPoint</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#filter" class="methodName">filter</a></li><li data-type='method'><a href="EditableMathlist.html#insert" class="methodName">insert</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#insertFirstAtom" class="methodName">insertFirstAtom</a></li><li data-type='method'><a href="EditableMathlist.html#isCollapsed" class="methodName">isCollapsed</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#jump" class="methodName">jump</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#leap" class="methodName">leap</a></li><li data-type='method'><a href="EditableMathlist.html#moveAfterParent_" class="methodName">moveAfterParent_</a></li><li data-type='method'><a href="EditableMathlist.html#moveBeforeParent_" class="methodName">moveBeforeParent_</a></li><li data-type='method'><a href="EditableMathlist.html#moveDown_" class="methodName">moveDown_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToGroupEnd_" class="methodName">moveToGroupEnd_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToGroupStart_" class="methodName">moveToGroupStart_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToMathFieldEnd_" class="methodName">moveToMathFieldEnd_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToMathFieldStart_" class="methodName">moveToMathFieldStart_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToNextChar_" class="methodName">moveToNextChar_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToNextPlaceholder_" class="methodName">moveToNextPlaceholder_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToNextWord_" class="methodName">moveToNextWord_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToOpposite_" class="methodName">moveToOpposite_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToPreviousChar_" class="methodName">moveToPreviousChar_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToPreviousPlaceholder_" class="methodName">moveToPreviousPlaceholder_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToPreviousWord_" class="methodName">moveToPreviousWord_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToSubscript_" class="methodName">moveToSubscript_</a></li><li data-type='method'><a href="EditableMathlist.html#moveToSuperscript_" class="methodName">moveToSuperscript_</a></li><li data-type='method'><a href="EditableMathlist.html#moveUp_" class="methodName">moveUp_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#next" class="methodName">next</a></li><li data-type='method'><a href="EditableMathlist.html#selectAll_" class="methodName">selectAll_</a></li><li data-type='method'><a href="EditableMathlist.html#selectGroup_" class="methodName">selectGroup_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#setExtent" class="methodName">setExtent</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#setRange" class="methodName">setRange</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#setSelection" class="methodName">setSelection</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#sibling" class="methodName">sibling</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#siblings" class="methodName">siblings</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#skip" class="methodName">skip</a></li><li data-type='method'><a href="EditableMathlist.html#speakAll_" class="methodName">speakAll_</a></li><li data-type='method'><a href="EditableMathlist.html#speakAllWithSynchronizedHighlighting_" class="methodName">speakAllWithSynchronizedHighlighting_</a></li><li data-type='method'><a href="EditableMathlist.html#speakGroup_" class="methodName">speakGroup_</a></li><li data-type='method'><a href="EditableMathlist.html#speakLeftSibling_" class="methodName">speakLeftSibling_</a></li><li data-type='method'><a href="EditableMathlist.html#speakParent_" class="methodName">speakParent_</a></li><li data-type='method'><a href="EditableMathlist.html#speakRightSibling_" class="methodName">speakRightSibling_</a></li><li data-type='method'><a href="EditableMathlist.html#speakSelection_" class="methodName">speakSelection_</a></li><li data-type='method'><a href="EditableMathlist.html#speakSelectionWithSynchronizedHighlighting_" class="methodName">speakSelectionWithSynchronizedHighlighting_</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#startOffset" class="methodName">startOffset</a></li><li data-type='method' class='private'><a href="EditableMathlist.html#toString" class="methodName">toString</a></li><li data-type='method'><a href="EditableMathlist.html#transpose_" class="methodName">transpose_</a></li></ul></li><li class="private"><a href="Lexer.html" class="className">Lexer</a><ul class='methods private'><li data-type='method' class='private'><a href="Lexer.html#end" class="methodName">end</a></li><li data-type='method' class='private'><a href="Lexer.html#get" class="methodName">get</a></li><li data-type='method' class='private'><a href="Lexer.html#isWhiteSpace" class="methodName">isWhiteSpace</a></li><li data-type='method' class='private'><a href="Lexer.html#makeToken" class="methodName">makeToken</a></li><li data-type='method' class='private'><a href="Lexer.html#peek" class="methodName">peek</a></li><li data-type='method' class='private'><a href="Lexer.html#scan" class="methodName">scan</a></li></ul></li><li class="private"><a href="MathAtom.html" class="className">MathAtom</a><ul class='methods private'><li data-type='method' class='private'><a href="MathAtom.html#.toSpeakableText" class="methodName">toSpeakableText</a></li><li data-type='method' class='private'><a href="MathAtom.html#bind" class="methodName">bind</a></li><li data-type='method' class='private'><a href="MathAtom.html#decompose" class="methodName">decompose</a></li><li data-type='method' class='private'><a href="MathAtom.html#decomposeGenfrac" class="methodName">decomposeGenfrac</a></li><li data-type='method' class='private'><a href="MathAtom.html#decomposeLeftright" class="methodName">decomposeLeftright</a></li><li data-type='method' class='private'><a href="MathAtom.html#decomposeLine" class="methodName">decomposeLine</a></li><li data-type='method' class='private'><a href="MathAtom.html#decomposeRule" class="methodName">decomposeRule</a></li><li data-type='method' class='private'><a href="MathAtom.html#filter" class="methodName">filter</a></li><li data-type='method' class='private'><a href="MathAtom.html#makeSpan" class="methodName">makeSpan</a></li></ul></li><li><a href="MathField.html" class="className">MathField</a><ul class='methods'><li data-type='method' class='private'><a href="MathField.html#_getCaretPosition" class="methodName">_getCaretPosition</a></li><li data-type='method' class='private'><a href="MathField.html#_onKeystroke" class="methodName">_onKeystroke</a></li><li data-type='method' class='private'><a href="MathField.html#complete_" class="methodName">complete_</a></li><li data-type='method'><a href="MathField.html#el" class="methodName">el</a></li><li data-type='method' class='private'><a href="MathField.html#enterCommandMode_" class="methodName">enterCommandMode_</a></li><li data-type='method'><a href="MathField.html#insert" class="methodName">insert</a></li><li data-type='method'><a href="MathField.html#keystroke" class="methodName">keystroke</a></li><li data-type='method'><a href="MathField.html#latex" class="methodName">latex</a></li><li data-type='method'><a href="MathField.html#perform" class="methodName">perform</a></li><li data-type='method'><a href="MathField.html#perform" class="methodName">perform</a></li><li data-type='method' class='private'><a href="MathField.html#render" class="methodName">render</a></li><li data-type='method'><a href="MathField.html#revertToOriginalContent" class="methodName">revertToOriginalContent</a></li><li data-type='method'><a href="MathField.html#selectedText" class="methodName">selectedText</a></li><li data-type='method'><a href="MathField.html#selectionAtEnd" class="methodName">selectionAtEnd</a></li><li data-type='method'><a href="MathField.html#selectionAtStart" class="methodName">selectionAtStart</a></li><li data-type='method'><a href="MathField.html#selectionDepth" class="methodName">selectionDepth</a></li><li data-type='method'><a href="MathField.html#selectionIsCollapsed" class="methodName">selectionIsCollapsed</a></li><li data-type='method'><a href="MathField.html#setConfig" class="methodName">setConfig</a></li><li data-type='method'><a href="MathField.html#text" class="methodName">text</a></li><li data-type='method'><a href="MathField.html#typedText" class="methodName">typedText</a></li></ul></li><li class="private"><a href="module-mathstyle.Mathstyle.html" class="className">Mathstyle</a></li><li class="private"><a href="Parser.html" class="className">Parser</a><ul class='methods private'><li data-type='method' class='private'><a href="Parser.html#end" class="methodName">end</a></li><li data-type='method' class='private'><a href="Parser.html#hasLiteral" class="methodName">hasLiteral</a></li><li data-type='method' class='private'><a href="Parser.html#hasLiteralPattern" class="methodName">hasLiteralPattern</a></li><li data-type='method' class='private'><a href="Parser.html#hasToken" class="methodName">hasToken</a></li><li data-type='method' class='private'><a href="Parser.html#lastMathAtom" class="methodName">lastMathAtom</a></li><li data-type='method' class='private'><a href="Parser.html#parseAtom" class="methodName">parseAtom</a></li><li data-type='method' class='private'><a href="Parser.html#parseKeyword" class="methodName">parseKeyword</a></li><li data-type='method' class='private'><a href="Parser.html#parseLimits" class="methodName">parseLimits</a></li><li data-type='method' class='private'><a href="Parser.html#parseSupSub" class="methodName">parseSupSub</a></li><li data-type='method' class='private'><a href="Parser.html#parseToken" class="methodName">parseToken</a></li><li data-type='method' class='private'><a href="Parser.html#scanArg" class="methodName">scanArg</a></li><li data-type='method' class='private'><a href="Parser.html#scanColor" class="methodName">scanColor</a></li><li data-type='method' class='private'><a href="Parser.html#scanDelim" class="methodName">scanDelim</a></li><li data-type='method' class='private'><a href="Parser.html#scanDimen" class="methodName">scanDimen</a></li><li data-type='method' class='private'><a href="Parser.html#scanEnvironment" class="methodName">scanEnvironment</a></li><li data-type='method' class='private'><a href="Parser.html#scanGroup" class="methodName">scanGroup</a></li><li data-type='method' class='private'><a href="Parser.html#scanImplicitGroup" class="methodName">scanImplicitGroup</a></li><li data-type='method' class='private'><a href="Parser.html#scanLeftRight" class="methodName">scanLeftRight</a></li><li data-type='method' class='private'><a href="Parser.html#scanModeSet" class="methodName">scanModeSet</a></li><li data-type='method' class='private'><a href="Parser.html#scanModeShift" class="methodName">scanModeShift</a></li><li data-type='method' class='private'><a href="Parser.html#scanNumber" class="methodName">scanNumber</a></li><li data-type='method' class='private'><a href="Parser.html#scanString" class="methodName">scanString</a></li><li data-type='method' class='private'><a href="Parser.html#scanToken" class="methodName">scanToken</a></li></ul></li><li class="private"><a href="Span.html" class="className">Span</a></li><li class="private"><a href="Token.html" class="className">Token</a></li><li class="private"><a href="UndoManager.html" class="className">UndoManager</a><ul class='methods private'><li data-type='method' class='private'><a href="UndoManager.html#canRedo" class="methodName">canRedo</a></li><li data-type='method' class='private'><a href="UndoManager.html#canUndo" class="methodName">canUndo</a></li><li data-type='method' class='private'><a href="UndoManager.html#redo" class="methodName">redo</a></li><li data-type='method' class='private'><a href="UndoManager.html#snapshot" class="methodName">snapshot</a></li><li data-type='method' class='private'><a href="UndoManager.html#undo" class="methodName">undo</a></li></ul></li></ul><h3 class="group-title">Modules</h3><ul><li class="private"><a href="module-color.html" class="className">color</a><ul class='methods private'><li data-type='method' class='private'><a href="module-color.html#.stringToColor" class="methodName">stringToColor</a></li></ul></li><li class="private"><a href="module-definitions.html" class="className">definitions</a><ul class='methods private'><li data-type='method' class='private'><a href="module-definitions.html#.defineEnvironment" class="methodName">defineEnvironment</a></li><li data-type='method' class='private'><a href="module-definitions.html#.defineFunction" class="methodName">defineFunction</a></li><li data-type='method' class='private'><a href="module-definitions.html#.defineSymbol" class="methodName">defineSymbol</a></li><li data-type='method' class='private'><a href="module-definitions.html#.defineSymbolRange" class="methodName">defineSymbolRange</a></li><li data-type='method' class='private'><a href="module-definitions.html#.defineSymbols" class="methodName">defineSymbols</a></li><li data-type='method' class='private'><a href="module-definitions.html#.frequency" class="methodName">frequency</a></li><li data-type='method' class='private'><a href="module-definitions.html#.getInfo" class="methodName">getInfo</a></li><li data-type='method' class='private'><a href="module-definitions.html#.matchCodepoint" class="methodName">matchCodepoint</a></li><li data-type='method' class='private'><a href="module-definitions.html#.matchFunction" class="methodName">matchFunction</a></li><li data-type='method' class='private'><a href="module-definitions.html#.parseParamTemplateArgument" class="methodName">parseParamTemplateArgument</a></li><li data-type='method' class='private'><a href="module-definitions.html#.suggest" class="methodName">suggest</a></li></ul></li><li class="private"><a href="module-delimiters.html" class="className">delimiters</a><ul class='methods private'><li data-type='method' class='private'><a href="module-delimiters.html#.makeCustomSizedDelim" class="methodName">makeCustomSizedDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeInner" class="methodName">makeInner</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeLargeDelim" class="methodName">makeLargeDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeLeftRightDelim" class="methodName">makeLeftRightDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeNullFence" class="methodName">makeNullFence</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeSizedDelim" class="methodName">makeSizedDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeSmallDelim" class="methodName">makeSmallDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.makeStackedDelim" class="methodName">makeStackedDelim</a></li><li data-type='method' class='private'><a href="module-delimiters.html#.traverseSequence" class="methodName">traverseSequence</a></li></ul></li><li class="private"><a href="module-editor_editableMathlist.html" class="className">editor/editableMathlist</a><ul class='methods private'><li data-type='method' class='private'><a href="module-editor_editableMathlist.html#~atomContains" class="methodName">atomContains</a></li></ul></li><li class="private"><a href="module-editor_keyboard.html" class="className">editor/keyboard</a><ul class='methods private'><li data-type='method' class='private'><a href="module-editor_keyboard.html#.delegateKeyboardEvents" class="methodName">delegateKeyboardEvents</a></li><li data-type='method' class='private'><a href="module-editor_keyboard.html#.keyboardEventToString" class="methodName">keyboardEventToString</a></li></ul></li><li class="private"><a href="module-editor_mathfield.html" class="className">editor/mathfield</a><ul class='methods private'><li data-type='method' class='private'><a href="module-editor_mathfield.html#nearestElementFromPoint" class="methodName">nearestElementFromPoint</a></li></ul></li><li class="private"><a href="module-editor_mathpath.html" class="className">editor/mathpath</a><ul class='methods private'><li data-type='method' class='private'><a href="module-editor_mathpath.html#.pathCommonAncestor" class="methodName">pathCommonAncestor</a></li><li data-type='method' class='private'><a href="module-editor_mathpath.html#.pathDistance" class="methodName">pathDistance</a></li><li data-type='method' class='private'><a href="module-editor_mathpath.html#.pathFromString" class="methodName">pathFromString</a></li><li data-type='method' class='private'><a href="module-editor_mathpath.html#.pathToString" class="methodName">pathToString</a></li></ul></li><li class="private"><a href="module-editor_shortcuts.html" class="className">editor/shortcuts</a><ul class='methods private'><li data-type='method' class='private'><a href="module-editor_shortcuts.html#.match" class="methodName">match</a></li><li data-type='method' class='private'><a href="module-editor_shortcuts.html#.matchKeystroke" class="methodName">matchKeystroke</a></li><li data-type='method' class='private'><a href="module-editor_shortcuts.html#.platform" class="methodName">platform</a></li><li data-type='method' class='private'><a href="module-editor_shortcuts.html#.stringify" class="methodName">stringify</a></li></ul></li><li class="private"><a href="module-fontMetrics.html" class="className">fontMetrics</a><ul class='methods private'><li data-type='method' class='private'><a href="module-fontMetrics.html#.getCharacterMetrics" class="methodName">getCharacterMetrics</a></li></ul></li><li class="private"><a href="module-lexer.html" class="className">lexer</a><ul class='methods private'><li data-type='method' class='private'><a href="module-lexer.html#.tokenize" class="methodName">tokenize</a></li></ul></li><li class="private"><a 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class="methodName">latexToMarkup</a></li><li data-type='method'><a href="module-mathlive.html#latexToMathML" class="methodName">latexToMathML</a></li><li data-type='method'><a href="module-mathlive.html#latexToSpeakableText" class="methodName">latexToSpeakableText</a></li><li data-type='method'><a href="module-mathlive.html#makeMathField" class="methodName">makeMathField</a></li><li data-type='method'><a href="module-mathlive.html#pauseReadAloud" class="methodName">pauseReadAloud</a></li><li data-type='method'><a href="module-mathlive.html#playReadAloud" class="methodName">playReadAloud</a></li><li data-type='method'><a href="module-mathlive.html#readAloud" class="methodName">readAloud</a></li><li data-type='method'><a href="module-mathlive.html#readAloudStatus" class="methodName">readAloudStatus</a></li><li data-type='method'><a href="module-mathlive.html#renderMathInDocument" class="methodName">renderMathInDocument</a></li><li data-type='method'><a 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writeCookie('symbol-access', 'no-private') } else { document.documentElement.classList.remove('no-private') writeCookie('symbol-access', 'private') } ">Include Private Symbols</input></label></div> <footer role="contentInfo"> Made with <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a>. </footer> </nav> </section> <main id="main"> <h1 class="page-title">addons/outputSpokenText.js</h1> <section> <article> <pre class="prettyprint source linenums"> <code> define(['mathlive/core/mathAtom', 'mathlive/core/definitions', 'mathlive/editor/editor-popover'], function(MathAtom, Definitions, Popover) { // Markup // Two common flavor of markups: SSML and 'mac'. The latter is only available // when using the native TTS synthesizer on Mac OS. // Use SSML in the production rules below. The markup will either be striped // off or replaced with the 'mac' markup as necessary. // // SSML Mac // ---- ---- // <emphasis>WORD</emphasis> [[emph +]]WORD // <break time="150ms"/> [[slc 150]] // <say-as interpret-as="character">A</say-as> [[char LTRL] A [[char NORM]] // https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/SpeechSynthesisProgrammingGuide/FineTuning/FineTuning.html#//apple_ref/doc/uid/TP40004365-CH5-SW3 // https://pdfs.semanticscholar.org/8887/25b82b8dbb45dd4dd69b36a65f092864adb0.pdf // "<audio src='non_existing_file.au'>File could not be played.</audio>" // "I am now <prosody rate='+0.06'>speaking 6% faster.</prosody>" const PRONUNCIATION = { '\\alpha': ' alpha ', '\\mu': ' mew ', '\\sigma': ' sigma ', '\\pi': ' pie ', '\\imaginaryI': ' eye ', '\\sum': ' Summation ', '\\prod': ' Product ', ';': ' <break time="150ms"/> semi-colon <break time="150ms"/>', ',': ' <break time="150ms"/> comma <break time="150ms"/>', '|': ' <break time="150ms"/>Vertical bar<break time="150ms"/>', '(': ' <break time="150ms"/>Open paren. <break time="150ms"/>', ')': '. <break time="150ms"/> Close paren. <break time="150ms"/>', '=': ' equals ', '<': ' is less than ', '\\lt': ' is less than ', '<=': ' is less than or equal to ', '\\le': ' is less than or equal to ', '\\gt': ' is greater than ', '>': ' is greater than ', '\\ge': ' is greater than or equal to ', '\\geq': ' is greater than or equal to ', '\\leq': ' is less than or equal to ', '!': ' factorial ', '\\sin': ' sine ', '\\cos': ' cosine ', '\u200b': '', '\u2212': ' minus ', ':': ' <break time="150ms"/> such that <break time="200ms"/> ', '\\colon': ' <break time="150ms"/> such that <break time="200ms"/> ', '\\hbar': ' etch bar ', '\\iff': ' <break time="200ms"/>if, and only if, <break time="200ms"/>', '\\Longleftrightarrow': '<break time="200ms"/>if, and only if, <break time="200ms"/>', '\\land': ' and ', '\\lor': ' or ', '\\neg': ' not ', '\\div': ' divided by ', '\\forall': ' for all ', '\\exists': ' there exists ', '\\nexists': ' there does not exists ', '\\in': ' element of ', '\\N': ' the set <break time="150ms"/><say-as interpret-as="character">n</say-as>', '\\C': ' the set <break time="150ms"/><say-as interpret-as="character">c</say-as>', '\\Z': ' the set <break time="150ms"/><say-as interpret-as="character">z</say-as>', '\\Q': ' the set <break time="150ms"/><say-as interpret-as="character">q</say-as>', '\\infty': ' infinity ', '\\nabla': ' nabla ', '\\partial': ' partial derivative of ', '\\cdots': ' dot dot dot ', '\\Rightarrow': ' implies ', '\\lbrace': '<break time="150ms"/>open brace<break time="150ms"/>', '\\{': '<break time="150ms"/>open brace<break time="150ms"/>', '\\rbrace': '<break time="150ms"/>close brace<break time="150ms"/>', '\\}': '<break time="150ms"/>close brace<break time="150ms"/>', '\\langle': '<break time="150ms"/>left angle bracket<break time="150ms"/>', '\\rangle': '<break time="150ms"/>right angle bracket<break time="150ms"/>', '\\lfloor': '<break time="150ms"/>open floor<break time="150ms"/>', '\\rfloor': '<break time="150ms"/>close floor<break time="150ms"/>', '\\lceil': '<break time="150ms"/>open ceiling<break time="150ms"/>', '\\rceil': '<break time="150ms"/>close ceiling<break time="150ms"/>', '\\vert': '<break time="150ms"/>vertical bar<break time="150ms"/>', '\\mvert': '<break time="150ms"/>divides<break time="150ms"/>', '\\lvert': '<break time="150ms"/>left vertical bar<break time="150ms"/>', '\\rvert': '<break time="150ms"/>right vertical bar<break time="150ms"/>', // '\\lbrack': 'left bracket', // '\\rbrack': 'right bracket', '\\lbrack': ' <break time="150ms"/> open square bracket <break time="150ms"/>', '\\rbrack': ' <break time="150ms"/> close square bracket <break time="150ms"/>', } function getSpokenName(latex) { let result = Popover.NOTES[latex]; if (!result && latex.charAt(0) === '\\') { result = ' ' + latex.replace('\\', '') + ' '; } // If we got more than one result (from NOTES), // pick the first one. if (Array.isArray(result)) { result = result[0]; } return result; } function platform(p) { let result = 'other'; if (navigator && navigator.platform && navigator.userAgent) { if (/^(mac)/i.test(navigator.platform)) { result = 'mac'; } else if (/^(win)/i.test(navigator.platform)) { result = 'win'; } else if (/(android)/i.test(navigator.userAgent)) { result = 'android'; } else if (/(iphone)/i.test(navigator.userAgent) || /(ipod)/i.test(navigator.userAgent) || /(ipad)/i.test(navigator.userAgent)) { result = 'ios'; } else if (/\bCrOS\b/i.test(navigator.userAgent)) { result = 'chromeos'; } } return result === p ? p : '!' + p; } function isAtomic(mathlist) { let count = 0; if (mathlist && Array.isArray(mathlist)) { for (const atom of mathlist) { if (atom.type !== 'first') { count += 1; } } } return count === 1; } function atomicID(mathlist) { if (mathlist && Array.isArray(mathlist)) { for (const atom of mathlist) { if (atom.type !== 'first' && atom.id) { return atom.id.toString(); } } } return ''; } function atomicValue(mathlist) { let result = ''; if (mathlist && Array.isArray(mathlist)) { for (const atom of mathlist) { if (atom.type !== 'first' && typeof atom.body === 'string') { result += atom.body; } } } return result; } MathAtom.toSpeakableFragment = function(atom, options) { function letter(c) { let result = ''; if (!options.textToSpeechMarkup) { if (/[a-z]/.test(c)) { result += " '" + c.toUpperCase() + "'"; } else if (/[A-Z]/.test(c)) { result += " 'capital " + c.toUpperCase() + "'"; } else { result += c; } } else { if (/[a-z]/.test(c)) { result += ' <say-as interpret-as="character">' + c + '</say-as>'; } else if (/[A-Z]/.test(c)) { result += 'capital ' + c.toLowerCase() + ''; } else { result += c; } } return result; } function emph(s) { return '<emphasis>' + s + '</emphasis>'; } if (!atom) return ''; let result = ''; if (atom.id && options.speechMode === 'math') { result += '<mark name="' + atom.id.toString() + '"/>'; } if (Array.isArray(atom)) { let isInDigitRun = false; // need to group sequence of digits for (let i = 0; i < atom.length; i++) { if (i < atom.length - 2 && atom[i].type === 'mopen' && atom[i + 2].type === 'mclose' && atom[i + 1].type === 'mord') { result += ' of '; result += emph(MathAtom.toSpeakableFragment(atom[i + 1], options)); i += 2; // '.' and ',' should only be allowed if prev/next entry is a digit // However, if that isn't the case, this still works because 'toSpeakableFragment' is called in either case. } else if (atom[i].type === 'mord' && /[0123456789,.]/.test(atom[i].latex)) { if (isInDigitRun) { result += atom[i].latex; } else { isInDigitRun = true; result += MathAtom.toSpeakableFragment(atom[i], options); } } else { isInDigitRun = false result += MathAtom.toSpeakableFragment(atom[i], options); } } } else { let numer = ''; let denom = ''; let body = ''; let supsubHandled = false; switch(atom.type) { case 'group': case 'root': result += MathAtom.toSpeakableFragment(atom.body, options); break; case 'genfrac': numer = MathAtom.toSpeakableFragment(atom.numer, options); denom = MathAtom.toSpeakableFragment(atom.denom, options); if (isAtomic(atom.numer) && isAtomic(atom.denom)) { const COMMON_FRACTIONS = { '1/2': ' half ', '1/3': ' one third ', '2/3': ' two third', '1/4': ' one quarter ', '3/4': ' three quarter ', '1/5': ' one fifth ', '2/5': ' two fifths ', '3/5': ' three fifths ', '4/5': ' four fifths ', '1/6': ' one sixth ', '5/6': ' five sixths ', '1/8': ' one eight ', '3/8': ' three eights ', '5/8': ' five eights ', '7/8': ' seven eights ', '1/9': ' one ninth ', '2/9': ' two ninths ', '4/9': ' four ninths ', '5/9': ' five ninths ', '7/9': ' seven ninths ', '8/9': ' eight ninths ', // '1/10': ' one tenth ', // '1/12': ' one twelfth ', // 'x/2': ' <say-as interpret-as="character">X</say-as> over 2', }; const commonFraction = COMMON_FRACTIONS[ atomicValue(atom.numer) + '/' + atomicValue(atom.denom)]; if (commonFraction) { result = commonFraction; } else { result += numer + ' over ' + denom; } } else { result += ' The fraction <break time="150ms"/>' + numer + ', over <break time="150ms"/>' + denom + '.<break time="150ms"/> End fraction.<break time="150ms"/>'; } break; case 'surd': body = MathAtom.toSpeakableFragment(atom.body, options); if (!atom.index) { if (isAtomic(atom.body)) { result += ' The square root of ' + body + ' , '; } else { result += ' The square root of <break time="200ms"/>' + body + '. <break time="200ms"/> End square root'; } } else { let index = MathAtom.toSpeakableFragment(atom.index, options); index = index.trim(); const index2 = index.replace(/<mark([^/]*)\/>/g, '') if (index2 === '3') { result += ' The cube root of <break time="200ms"/>' + body + '. <break time="200ms"/> End cube root'; } else if (index2 === 'n') { result += ' The nth root of <break time="200ms"/>' + body + '. <break time="200ms"/> End root'; } else { result += ' The root with index: <break time="200ms"/>' + index + ', of <break time="200ms"/>' + body + '. <break time="200ms"/> End root'; } } break; case 'accent': break; case 'leftright': result += PRONUNCIATION[atom.leftDelim] || atom.leftDelim; result += MathAtom.toSpeakableFragment(atom.body, options); result += PRONUNCIATION[atom.rightDelim] || atom.rightDelim; break; case 'line': // @todo break; case 'rule': // @todo break; case 'overunder': // @todo break; case 'overlap': // @todo break; case 'placeholder': result += 'placeholder ' + atom.body; break; case 'delim': case 'sizeddelim': case 'mord': case 'minner': case 'mbin': case 'mrel': case 'mpunct': case 'mopen': case 'mclose': case 'textord': { const command = atom.latex ? atom.latex.trim() : '' ; if (command === '\\mathbin' || command === '\\mathrel' || command === '\\mathopen' || command === '\\mathclose' || command === '\\mathpunct' || command === '\\mathord' || command === '\\mathinner') { result = MathAtom.toSpeakableFragment(atom.body, options); break; } let atomValue = atom.body; let latexValue = atom.latex; if (atom.type === 'delim' || atom.type === 'sizeddelim') { atomValue = latexValue = atom.delim; } if (options.speechMode === 'text') { result += atomValue; } else { if (atom.type === 'mbin') { result += '<break time="150ms"/>'; } if (atomValue) { const value = PRONUNCIATION[atomValue] || (latexValue ? PRONUNCIATION[latexValue.trim()] : ''); if (value) { result += ' ' + value; } else { const spokenName = latexValue ? getSpokenName(latexValue.trim()) : ''; result += spokenName ? spokenName : letter(atomValue); } } else { result += MathAtom.toSpeakableFragment(atom.body, options); } if (atom.type === 'mbin') { result += '<break time="150ms"/>'; } } break; } case 'mop': // @todo if (atom.body !== '\u200b') { // Not ZERO-WIDTH const trimLatex = atom.latex ? atom.latex.trim() : '' ; if (trimLatex === '\\sum') { if (atom.superscript && atom.subscript) { let sup = MathAtom.toSpeakableFragment(atom.superscript, options); sup = sup.trim(); let sub = MathAtom.toSpeakableFragment(atom.subscript, options); sub = sub.trim(); result += ' The summation from <break time="200ms"/>' + sub + '<break time="200ms"/> to <break time="200ms"/>' + sup + '<break time="200ms"/> of <break time="150ms"/>'; supsubHandled = true; } else if (atom.subscript) { let sub = MathAtom.toSpeakableFragment(atom.subscript, options); sub = sub.trim(); result += ' The summation from <break time="200ms"/>' + sub + '<break time="200ms"/> of <break time="150ms"/>'; supsubHandled = true; } else { result += ' The summation of'; } } else if (trimLatex === '\\prod') { if (atom.superscript && atom.subscript) { let sup = MathAtom.toSpeakableFragment(atom.superscript, options); sup = sup.trim(); let sub = MathAtom.toSpeakableFragment(atom.subscript, options); sub = sub.trim(); result += ' The product from <break time="200ms"/>' + sub + '<break time="200ms"/> to <break time="200ms"/>' + sup + '<break time="200ms"/> of <break time="150ms"/>'; supsubHandled = true; } else if (atom.subscript) { let sub = MathAtom.toSpeakableFragment(atom.subscript, options); sub = sub.trim(); result += ' The product from <break time="200ms"/>' + sub + '<break time="200ms"/> of <break time="150ms"/>'; supsubHandled = true; } else { result += ' The product of '; } } else if (trimLatex === '\\int') { if (atom.superscript && atom.subscript)