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calibre/resources/viewer/mathjax/extensions/HelpDialog.js

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/*************************************************************
*
* MathJax/extensions/HelpDialog.js
*
* Implements the MathJax Help dialog box.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2013-2015 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function (HUB,HTML,AJAX,OUTPUT,LOCALE) {
var HELP = MathJax.Extension.Help = {
version: "2.6.0"
};
var STIXURL = "http://www.stixfonts.org/";
var MENU = MathJax.Menu;
var FALSE, KEY;
HUB.Register.StartupHook("MathEvents Ready",function () {
FALSE = MathJax.Extension.MathEvents.Event.False;
KEY = MathJax.Extension.MathEvents.Event.KEY;
});
var CONFIG = HUB.CombineConfig("HelpDialog",{
styles: {
"#MathJax_Help": {
position:"fixed", left:"50%", width:"auto", "max-width": "90%", "text-align":"center",
border:"3px outset", padding:"1em 2em", "background-color":"#DDDDDD", color:"black",
cursor: "default", "font-family":"message-box", "font-size":"120%",
"font-style":"normal", "text-indent":0, "text-transform":"none",
"line-height":"normal", "letter-spacing":"normal", "word-spacing":"normal",
"word-wrap":"normal", "white-space":"wrap", "float":"none", "z-index":201,
"border-radius": "15px", // Opera 10.5 and IE9
"-webkit-border-radius": "15px", // Safari and Chrome
"-moz-border-radius": "15px", // Firefox
"-khtml-border-radius": "15px", // Konqueror
"box-shadow":"0px 10px 20px #808080", // Opera 10.5 and IE9
"-webkit-box-shadow":"0px 10px 20px #808080", // Safari 3 and Chrome
"-moz-box-shadow":"0px 10px 20px #808080", // Forefox 3.5
"-khtml-box-shadow":"0px 10px 20px #808080", // Konqueror
filter: "progid:DXImageTransform.Microsoft.dropshadow(OffX=2, OffY=2, Color='gray', Positive='true')" // IE
},
"#MathJax_Help.MathJax_MousePost": {
outline:"none"
},
"#MathJax_HelpContent": {
overflow:"auto", "text-align":"left", "font-size":"80%",
padding:".4em .6em", border:"1px inset", margin:"1em 0px",
"max-height":"20em", "max-width":"30em", "background-color":"#EEEEEE"
},
"#MathJax_HelpClose": {
position:"absolute", top:".2em", right:".2em",
cursor:"pointer",
display:"inline-block",
border:"2px solid #AAA",
"border-radius":"18px",
"-webkit-border-radius": "18px", // Safari and Chrome
"-moz-border-radius": "18px", // Firefox
"-khtml-border-radius": "18px", // Konqueror
"font-family":"'Courier New',Courier",
"font-size":"24px",
color:"#F0F0F0"
},
"#MathJax_HelpClose span": {
display:"block", "background-color":"#AAA", border:"1.5px solid",
"border-radius":"18px",
"-webkit-border-radius": "18px", // Safari and Chrome
"-moz-border-radius": "18px", // Firefox
"-khtml-border-radius": "18px", // Konqueror
"line-height":0,
padding:"8px 0 6px" // may need to be browser-specific
},
"#MathJax_HelpClose:hover": {
color:"white!important",
border:"2px solid #CCC!important"
},
"#MathJax_HelpClose:hover span": {
"background-color":"#CCC!important"
},
"#MathJax_HelpClose:hover:focus": {
outline:"none"
}
}
});
/*
* Handle the Help Dialog box
*/
HELP.Dialog = function (event) {
LOCALE.loadDomain("HelpDialog",["Post",HELP,event]);
};
HELP.Post = function (event) {
this.div = MENU.Background(this);
var help = HTML.addElement(this.div,"div",{
id: "MathJax_Help", tabIndex: 0, onkeydown: HELP.Keydown
},LOCALE._("HelpDialog",[
["b",{style:{fontSize:"120%"}},[["Help","MathJax Help"]]],
["div",{id: "MathJax_HelpContent", tabIndex: 0},[
["p",{},[["MathJax",
"*MathJax* is a JavaScript library that allows page authors to include " +
"mathematics within their web pages. As a reader, you don't need to do " +
"anything to make that happen."]]
],
["p",{},[["Browsers",
"*Browsers*: MathJax works with all modern browsers including IE6+, Firefox 3+, " +
"Chrome 0.2+, Safari 2+, Opera 9.6+ and most mobile browsers."]]
],
["p",{},[["Menu",
"*Math Menu*: MathJax adds a contextual menu to equations. Right-click or " +
"CTRL-click on any mathematics to access the menu."]]
],
["div",{style:{"margin-left":"1em"}},[
["p",{},[["ShowMath",
"*Show Math As* allows you to view the formula's source markup " +
"for copy & paste (as MathML or in its original format)."]]
],
["p",{},[["Settings",
"*Settings* gives you control over features of MathJax, such as the " +
"size of the mathematics, and the mechanism used to display equations."]]
],
["p",{},[["Language",
"*Language* lets you select the language used by MathJax for its menus " +
"and warning messages."]]
],
]],
["p",{},[["Zoom",
"*Math Zoom*: If you are having difficulty reading an equation, MathJax can " +
"enlarge it to help you see it better."]]
],
["p",{},[["Accessibilty",
"*Accessibility*: MathJax will automatically work with screen readers to make " +
"mathematics accessible to the visually impaired."]]
],
["p",{},[["Fonts",
"*Fonts*: MathJax will use certain math fonts if they are installed on your " +
"computer; otherwise, it will use web-based fonts. Although not required, " +
"locally installed fonts will speed up typesetting. We suggest installing " +
"the [STIX fonts](%1).",STIXURL]]
]
]],
["a",{href:"http://www.mathjax.org/"},["www.mathjax.org"]],
["span",{id: "MathJax_HelpClose", onclick: HELP.Remove,
onkeydown: HELP.Keydown, tabIndex: 0, role: "button",
"aria-label": LOCALE._(["HelpDialog","CloseDialog"],"Close help dialog")},
[["span",{},["\u00D7"]]]
]
]));
if (event.type === "mouseup") help.className += " MathJax_MousePost";
help.focus();
LOCALE.setCSS(help);
var doc = (document.documentElement||{});
var H = window.innerHeight || doc.clientHeight || doc.scrollHeight || 0;
if (MENU.prototype.msieAboutBug) {
help.style.width = "20em"; help.style.position = "absolute";
help.style.left = Math.floor((document.documentElement.scrollWidth - help.offsetWidth)/2)+"px";
help.style.top = (Math.floor((H-help.offsetHeight)/3)+document.body.scrollTop)+"px";
} else {
help.style.marginLeft = Math.floor(-help.offsetWidth/2)+"px";
help.style.top = Math.floor((H-help.offsetHeight)/3)+"px";
}
};
HELP.Remove = function (event) {
if (HELP.div) {document.body.removeChild(HELP.div); delete HELP.div}
};
HELP.Keydown = function(event) {
if (event.keyCode === KEY.ESCAPE ||
(this.id === "MathJax_HelpClose" &&
(event.keyCode === KEY.SPACE || event.keyCode === KEY.RETURN))) {
HELP.Remove(event);
MENU.CurrentNode().focus();
FALSE(event);
}
},
MathJax.Callback.Queue(
HUB.Register.StartupHook("End Config",{}), // wait until config is complete
["Styles",AJAX,CONFIG.styles],
["Post",HUB.Startup.signal,"HelpDialig Ready"],
["loadComplete",AJAX,"[MathJax]/extensions/HelpDialog.js"]
);
})(MathJax.Hub,MathJax.HTML,MathJax.Ajax,MathJax.OutputJax,MathJax.Localization);
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