glowscript/GlowScriptOffline/GlowScript.html at 7ca17cf9dfff9c8936094ff08ec48b1b8406ebf7 · vpython/glowscript

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<!DOCTYPE html>

<html>

<head>

<title>GlowScript Offline</title>

<style>

.api {

height: 5000px;

border: 1px solid #ddd;

border-radius: 4px;

}

.split p {

padding: 20px;

}

.split {

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

overflow-y: auto;

overflow-x: hidden;

}

.gutter {

background-color: #ccc;

background-repeat: no-repeat;

background-position: 50%;

}

.gutter.gutter-horizontal {

cursor: ew-resize;

}

.split.split-horizontal, .gutter.gutter-horizontal {

height: 100%;

float: left;

}

</style>

</head>

</body>

var gsversion = 2.7

var printpane = false

var glowscript_run = undefined

window.Jupyter_VPython = undefined

if (!navigator.onLine) window.Jupyter_VPython = 'glowscript_data/' // get textures when offline

function fontloading() { // trigger loading of fonts for 3D text

"use strict";

// override the fontloading url's in the GlowScript library

if (window.__font_sans === undefined) {

var fontrefsans = opentype_loadjs(Roboto_sans) // a sans serif font

window.__font_sans = fontrefsans // an opentype.js Font object

}

if (window.__font_serif === undefined) {

var fontrefserif = opentype_loadjs(Nimbus_serif) // a serif font

window.__font_serif = fontrefserif // an opentype.js Font object

}

fontloading() // get the sans and serif font files used by 3D text

// For an unknown reason, attempts to load fonts when disconnected from the internet doesn't work,

// even when a full path was specified in a fontloading function.

// localCompile is a modification of https://github.com/BruceSherwood/glowscript/blob/master/ide/ide.js

function localCompile(header, compReady, errordiv) {

errordiv.innerHTML = ""

var compiler_url

if (header.lang == 'vpython' || header.lang == 'rapydscript') {

compiler_url = "glowscript_libraries/RScompiler." + header.version + ".min.js"

} else compiler_url = "glowscript_libraries/compiler." + header.version + ".min.js"

window.glowscript_compile = undefined

$.ajax({

url: compiler_url,

dataType: "script",

cache: true,

crossDomain: true // use script tag rather than xhr

}).fail(function (xhr, err, exc) {

(xhr)

alert(err + " getting " + xhr.url + ": " + exc)

}).done(function () {

if (!window.glowscript_compile) {

alert("Failed to load compiler from " + compiler_url)

return

}

var embedScript

try {

embedScript = window.glowscript_compile(header.source, {lang: header.lang,

version: header.version.substr(0,3)})

} catch(err) {

errordiv.innerHTML = "<p>"+err+"</p>"

return

}

embedScript = ";(function() {" + embedScript + '\n'+

'glowscript_run = function() { main(__func); }\n' +

'})()'

embedScript = embedScript.replace("</", "<\\/") // escape anything that could be a close script tag... hopefully this sequence only occurs in strings!

compReady(embedScript)

})

}

function parseVersionHeader( source ) {

var sourceLines = source.split("\n")

var header = sourceLines[0]

// Remove a newline or similar character at the end of header:

if (header.charCodeAt(header.length-1) < 32)

header = header.substring(0,header.length-1)

var rest = source.substring( header.length+1 )

var ret = {

version: null,

lang: '', // 'vpython' (default) or 'rapydscript' or 'javascript' or a string that is neither (e.g. when editing header)

source: rest,

ok: false,

unpackaged: false,

isCurrent: false

}

header = header.split(" ")

if (header.length === undefined) return ret

if (header[0] == ' ') return ret

var elements = []

for (var i=0; i<header.length; i++) { // remove empty strings corresponding to spaces

if (header[i] != '') elements.push(header[i])

}

if (elements.length < 2 || elements.length > 3) return ret

if (elements[0] != 'GlowScript') return ret

ret.lang = 'javascript' // the default if no language is specified

if (elements.length == 3) {

ret.lang = elements[2].toLowerCase()

if (!(ret.lang == 'javascript' || ret.lang == 'rapydscript' || ret.lang == 'vpython')) return ret

}

var ver = elements[1]

if (ver != gsversion) alert('The version number, '+ver+', should be '+gsversion)

var okv = true

return {

version: ver,

lang: ret.lang,

source: rest,

}

var gsErrordiv

function runCode() {

var text = GSedit.getValue()

var end = text.indexOf('\n')

var i = text.slice(0,end).indexOf("GlowScript") // Look for "GlowScipt" in first line

if (i < 0 && text.indexOf('from vpython') === 0) text = "GlowScript "+gsversion+" VPython" + "\n" + text

var header = parseVersionHeader(text)

printpane = false

if (header.source.indexOf('print(') >= 0) { // if the program uses print() or GSprint(), expand 3rd pane

printpane = true

var end = header.source.indexOf('\n')

var insert

if (header.lang == 'vpython' || header.lang == 'rapydscript')

insert = "print_options(place=$('#printing'), width=300, height=500, clear=True)\n"

else insert = "print_options({place:$('#printing'), width:300, height:500, clear:true})\n"

header.source = header.source.slice(0,end+1) + insert + header.source.slice(end+1)

}

// Look for mention of MathJax in program and attempt to get it (need internet access; files too big to include in package)

if (header.source.indexOf('MathJax') >= 0) {

alert('Cannot currently use MathJax in GlowScript Offline.')

}

splitAdjust()

gsErrordiv = $("#gserrors")[0]

localCompile(header, ready, gsErrordiv)

}

function ready(sc) {

var w = $("#glows")

w[0].innerHTML = "" // Comment this and the next if get a solution for too many WebGL context

w[0].innerHTML = '<div id="glowscript" class="glowscript"></div>'

window.__context = { glowscript_container: $(".glowscript").removeAttr("id") }

// TODO: how to set an error handler???

window.__context.errorHandler = gsErrorHandler

runScript = new Function(sc)

runScript()

glowscript_run()

}

function gsErrorHandler(err) {

gsErrordiv.innerHTML = "<p>"+err+"</p>"

}

function getConsoleHeight() {

return 0

}

</script>

function readSingleFile(evt) {

var ok = true

if (GSedit.changed()) {

var s = "To continue without saving, click OK.\nTo save, click Cancel, then copy and paste into an application such as Notepad or TextEdit."

if (confirm(s)) ok = true

else ok = false

}

if (ok) {

var f, reader

f = evt.target.files[0]

if (f) {

reader = new FileReader()

reader.onload = function(e) {

var content = e.target.result

GSedit.setValue(content)

}

reader.readAsText(f)

}

document.getElementById('read_local_file').addEventListener('change', readSingleFile, false)

</script>

</div>

</div>

// Splits library: https://github.com/nathancahill/Split.js

var lastwindowwidth = window.innerWidth

var splits = Split(['#sourcetext', '#glows', "#printing"], {sizes: [50,50,0], onDrag:splitdrag})

// splits.getSizes() returns current percentage widths; splits.setSizes([w1,w2]) resets them

var source = 'from vpython import *\nbox()'

GSedit.init("#sourcetext", source, 0.5*lastwindowwidth, false) // not readonly

function splitdrag() {

var s = splits.getSizes() // returns [width1, width2, width3]

GSedit.setwidth(0.01*s[0]*window.innerWidth)

}

function splitAdjust() { // p is true if print pane shouold be open

var current = splits.getSizes()

var w1 = current[0]*lastwindowwidth/window.innerWidth

var w2 = current[1]

var w3 = current[2]

var rest = 100-w1

lastwindowwidth = window.innerWidth

if (printpane) splits.setSizes([w1,0.7*rest,0.3*rest])

else splits.setSizes([w1,rest,0])

GSresize(0.01*w1*window.innerWidth)

}

$(window).resize(function () {

splitAdjust()

})

window.onbeforeunload = undefined // execute window.onbeforeunload = Quit if GSedit.changed() is true

function Quit(e) { // Some browsers just say "Do you want to leave this site? Changes you made may not be saved."

var s = "To continue without saving, click OK.\nTo save, click Cancel, then copy and paste into an application such as Notepad or TextEdit."

e.returnValue = s

return s

}

</script>

</html>

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