I'm trying to create an web page with F# Fable and p5.js. I have the setup and draw functions correctly declared, and p5.js is referenced in the HTML. However nothing seem to work: The setup function is never called and thus canvas is never created. No error message is displayed.
The following is the code I'm using.
<!doctype html>
<html>
<head>
<style>
body {
padding: 20px;
margin: 0 auto;
}
canvas {
vertical-align: top;
}
div {
margin-bottom: 20px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.1/p5.js"></script>
<title>Simple Fable App</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="shortcut icon" href="fable.ico" />
</head>
<body>
</body>
</html>
open Fable.Core
open Fable.Core.JsInterop
open Fable.Import
[<Emit("fill($0)")>]
let fill (_: int): unit = jsNative
[<Emit("rect($0, $1, $2, $3)")>]
let rect (_: int) (_: int) (_: int) (_: int): unit = jsNative
[<Emit("frameRate($0)")>]
let frameRate (_: int): unit = jsNative
[<Emit("createCanvas($0, $1)")>]
let createCanvas (_: int) (_: int): unit = jsNative
let setup () =
createCanvas 500 500
frameRate 15
let draw () =
fill 255
rect 10 10 100 101
If I use the very same HTML above with the equivalent JS it will work as expected, so I assume Fable is messing up my somewhere.
<!doctype html>
<html>
<head>
<style>
body {
padding: 20px;
margin: 0 auto;
}
canvas {
vertical-align: top;
}
div {
margin-bottom: 20px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.1/p5.js"></script>
<title>Simple Fable App</title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="shortcut icon" href="fable.ico" />
</head>
<body>
</body>
<script>
function setup () {
createCanvas(500, 500)
frameRate(15)
}
function draw () {
fill(255)
rect(10, 10, 100, 101)
}
</script>
</html>
Following the hint given by #FyodorSoikin, I searched the documentation and found out how to add properties to JS objects.
So I added the two relevant functions to the Browser.window object (i.e. made them global):
Browser.window?setup <- setup
Browser.window?draw <- draw
And now everything works.
Related
I have installed Mathjax.2.7.5 and arabic-Mathjax from https://github.com/OmarIthawi/arabic-mathjax
I use them locally without server, without Internet-connection
i have modified the example "sample-signals.html" to get some arabic equation:
Arabic-Mathjax1
my code is:
!DOCTYPE html>
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--
| This example shows how to use MathJax's signal mechanism to find out
| about what MathJax is doing, and to hook into various events as they
| occur.
-->
<link href='Amiri' rel='stylesheet' type='text/css'>
<link rel="stylesheet" type="text/css" href="D:/4-11-2019/MathJax-2.7.5/arabic/dist/arabic.css">
<script type="text/x-mathjax-config">
// Configure MathJax
//
MathJax.Hub.Config({
jax: ["input/TeX", "output/HTML-CSS"],
extensions: ["tex2jax.js", "D:/4-11-2019/MathJax-2.7.5/arabic/dist/unpacked/arabic.js"],
TeX: {
extensions: ["AMSmath.js", "AMSsymbols.js", "autoload-all.js"]
},
'HTML-CSS': {
undefinedFamily: 'Amiri'
},
tex2jax: {
inlineMath: [
['$', '$'],
["\\(", "\\)"]
],
processEscapes: true
},
});
MathJax.Hub.Register.LoadHook("[MathJax]/extensions/TeX/noUndefined.js",
function () {MathJax.Hub.Startup.signal.Post("*** noUndefined Loaded ***")});
MathJax.Hub.Register.LoadHook("[MathJax]/extensions/TeX/AMSmath.js",
function () {MathJax.Hub.Startup.signal.Post("*** AMSmath Loaded ***")});
MathJax.Hub.Startup.signal.Post("*** In Startup Configuration code ***");
MathJax.Hub.Register.StartupHook("onLoad",function () {
Message("*** The onLoad handler has run, page is ready to process ***");
});
</script>
<!-- <script type="text/javascript" src="../MathJax.js"></script> -->
<script type="text/javascript" src="D:/4-11-2019/MathJax-2.7.5/MathJax.js"></script>
<style>
.output {
background-color: #F0F0F0;
border-top: 1px solid;
border-bottom: 1px solid;
padding: 3px 1em;
}
</style>
</head>
<body>
<p>
$$\alwaysar{x=1}$$
</p>
<p>
When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
</p>
<p>\[E = mc^2\]</p>
<p>$$\ar{x=1}$$</p>
<p>$\ar{x=1}$</p>
<p>
Messages about mathematics:
<pre id="MathMessages" class="output">
</pre>
</p>
<p>
All Messages:
<pre id="AllMessages" class="output">
</pre>
</p>
<script>
(function () {
var math = document.getElementById("MathMessages");
var all = document.getElementById("AllMessages");
window.Message = function (message) {
MathJax.HTML.addText(all,message);
MathJax.HTML.addElement(all,"br");
};
MathJax.Hub.Register.MessageHook("New Math",function (message) {
var script = MathJax.Hub.getJaxFor(message[1]).SourceElement();
MathJax.HTML.addText(math,message.join(" ")+": '"+script.text+"'");
MathJax.HTML.addElement(math,"br");
});
MathJax.Hub.Startup.signal.Interest(function (message) {Message("Startup: "+message)});
MathJax.Hub.signal.Interest(function (message) {Message("Hub: "+message)});
Message("##### events above this have already occurred #####");
})();
</script>
</body>
</html>
Can anyone help me????
I am trying to load HTML content to WKWebView, It does not load properly the same as screen height/width, same code is working fine with UIWebView, See the following code
webView.loadHTMLString(htmlString!, baseURL: nil)
HTML string content <style type="text/css"> #container { width: 667px; height: 375px; margin: 0 auto } </style> 667px is screen height and 375px is screen width.
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Highcharts Example</title>
<style type="text/css">
#container {
width: 667px;
height: 375px;
margin: 0 auto
}
</style>
</head>
<body>
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="container"></div>
<script type="text/javascript">
Highcharts.chart('container', {
//Chart code.
});
</script>
</body>
</html>
What can I do to solve this issue?
Add headerString before your html code and try it Like below
let description = "<p> HTML content <p>"
var headerString = "<header><meta name='viewport' content='width=device-width,
initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0'></header>"
headerString.append(description)
self.webView.loadHTMLString("\(headerString)", baseURL: nil)
I can't seem to get the canvas+ webview engine within Cocoon to use a PIXI.WebGLRenderer no matter what I try. Here is a simple example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="format-detection" content="telephone=no" />
<meta name="msapplication-tap-highlight" content="no" />
<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
<script type="text/javascript" src="http://pixijs.download/release/pixi.js"></script>
<title>Simple Test</title>
</head>
<body style="background-color: #99ff99; margin: 0; padding: 0;" onload="runTest()">
<script>
function runTest() {
var renderer = PIXI.autoDetectRenderer( 500, 200 );
document.body.appendChild( renderer.view );
var stageContainer = new PIXI.Container();
var text = new PIXI.Text( 'renderer.type='+renderer.type, { fontFamily: "Arial", fontSize: '12px', fill: "white" } );
text.x = text.y = 50;
stageContainer.addChild( text );
renderer.render( stageContainer );
}
</script>
</body>
</html>
With the Cocoon Launcher app I've tested this on:
iPhone5 (iOS 10.2)
iPad2 (iOS 9.3.5)
HP 10 Plus (android 4.4.2)
With webview+, all display "renderer=1" (which means PIXI.WebGLRenderer)
But with canvas+, all display "renderer=2" (which means PIXI.CanvasRenderer)
Is it possible to get canvas+ mode to work with WebGL in Pixi.js?
I have also tried forcing the renderer to be WebGL by replacing the autoDetectRenderer line with:
var renderer = new PIXI.WebGLRenderer( 500, 200 );
In this case my Cocoon Launcher on iphone and ipad crashes!
On the android, it just shows a black screen.
I have also tried with Pixi.js v3.0.1 with the same results.
So, is it possible to use WebGL with Cocoon's Canvas+ mode with Pixi.js?
Any help much appreciated, thanks
I managed to get it working, but not with the latest Pixi.js (v4.2.3), only with an old version - v3.0.10.
The key was to add cordova.js and use the document.addEventListener( "deviceready", runTest, false );
Here is some updated code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="format-detection" content="telephone=no" />
<meta name="msapplication-tap-highlight" content="no" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<script type="text/javascript" src="cordova.js"></script>
<script src="js/pixi-3.0.10.js"></script>
<title>Simple Test</title>
</head>
<body style="background-color: #99ff99; margin: 0; padding: 0;">
<script>
function runTest() {
var renderer = new PIXI.WebGLRenderer( 300, 100 );
document.body.appendChild( renderer.view );
var stageContainer = new PIXI.Container();
var text = new PIXI.Text( 'rrr.type='+renderer.type, { fontFamily: "Arial", fontSize: '12px', fill: "white" } );
text.x = text.y = 50;
stageContainer.addChild( text );
renderer.render( stageContainer );
}
document.addEventListener( "deviceready", runTest, false );
</script>
</body>
</html>
This is only a partial answer because it only works with an outdated version of Pixi.js
As for me, I'm abandoning canvas+ for now because what I got working showed poor and erratic results compared with the webview+ mode. Also, as an aside, according to various performance tests I've made, it seems that the old Pixi.js v3.0.10 is dramatically out performing v4.2.3 as well.. so looks like I'll be sticking with that also.
My problem is for my webpage designed for iOS. When testing on iPhone 5 (Safari) it loads fine in portrait mode then flips fine to landscape mode. But when going back to Portrait from Landscape it zooms in. I don't have this issue with iOS Chrome thought.
I've tried lots of different meta tags like :
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" >
But they seem to only cover the opposite issue of going from portrait to landscape zooming.
Some help would be greatly appreciated. I've spend many hours searching without success.
Here's a link if you wish to try it on a mobile device: http://www.blueberry-studio.co.uk/Robomoco_Websites/Device_iPhone_5/
and here's the code used:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="chrome=1,IE=edge" />
<meta name="viewport" content="user-scalable=no, width=1280" />
<meta name="apple-mobile-web-app-capable" content="yes"/>
<style type="text/css">
#media screen and (orientation:portrait)
{
#robomocomobileportrait_hype_container {
display: block;
}
#robomocomobilelandscape_hype_container{
display: none;
}
}
#media screen and (orientation:landscape)
{
#robomocomobileportrait_hype_container {
display: none;
}
#robomocomobilelandscape_hype_container {
display: block;
}
}
</style>
<div id="robomocomobileportrait_hype_container" style="position:relative;overflow:hidden;width:1280px;height:2260px;">
<script type="text/javascript" charset="utf-8" src="Robomoco_mobile_portrait.hyperesources/robomocomobileportrait_hype_generated_script.js?71837"></script>
</div>
<div id="robomocomobilelandscape_hype_container" style="position:relative;overflow:hidden;width:1280px;height:720px;">
<script type="text/javascript" charset="utf-8" src="Robomoco_mobile_landscape.hyperesources/robomocomobilelandscape_hype_generated_script.js?17049"></script>
</div>
I've found a way that resolves my problem:
var alsoenlarge = true;
$(function(){
if(isScalePossible()){
$('body').css({overflow:'hidden'}); //geen scrollbars
$('#scalecontainer').css({position: 'absolute', margin: 0}); //centreren met de hand na resize
// Run scale function on start
scaleSite();
scaleSite();
// run scale function on browser resize
$(window).resize(scaleSite);
}
});
function scaleSite()
{
windoww = $(window).width();
sitew = $('#scalecontainer').width();
f = windoww/sitew;
if(!alsoenlarge && f>1) f = 1;
$('#scalecontainer').css({
"-moz-transform" : "scale("+f+")",
"-webkit-transform" : "scale("+f+")",
"-ms-transform" : "scale("+f+")",
"-o-transform" : "scale("+f+")",
"transform" : "scale("+f+")",
"left" : ((windoww-(sitew*f))/2)+"px"
});
}
function isScalePossible()
{
can = 'MozTransform' in document.body.style;
if(!can) can = 'webkitTransform' in document.body.style;
if(!can) can = 'msTransform' in document.body.style;
if(!can) can = 'OTransform' in document.body.style;
if(!can) can = 'transform' in document.body.style;
if(!can) can = 'Transform' in document.body.style;
return can;
}
And my content in this div:
<div id="scalecontainer"> </div>
I have a problem that the text inside the content-div is scrollable. Happens on iOS 6 with iPhone 4 and only if native title is set.
Video: http://www.youtube.com/watch?v=8ARaDQzBqOM
Demo:
<!DOCTYPE html>
<html>
<head>
<script>
forge.topbar.setTitle('Test App', function() {
forge.logging.log("Topbar image set");
}, function(e) {
forge.logging.log("Topbar image error: " + e);
});
</script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Single page template</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
</head>
<body>
<div data-role="page">
<div data-role="content">
<p>this text is scrollable</p>
</div>
</div>
</body>
</html>
You might want to try to reset all the margins, paddings and border for all elements using CSS. Add this right before the closing </head>:
<style type="text/css">
* { /* reset */
margin: 0;
padding: 0;
border: 0;
}
</style>