Related
I am doing logging for my application using winston. I have done the file transport using this:
class LoggerHelper extends BaseHelper {
constructor(_cApp) {
super(_cApp);
this._props = {};
}
initialize() {
this._prepareConfigs();
this._createTransportObj();
this._createLoggerObj();
}
_prepareConfigs() {
this._props.dirname = this._configs.logsFolder;
this._props.filename = this._configs.filenameConvention;
this._props.datePattern = this._configs.datePattern;
this._props.maxSize = this._configs.maxSize;
this._props.level = this._configs.level;
this._props.timestamp = this._configs.timestamp;
this._props.prettyPrint = this._configs.prettyPrint;
}
_createTransportObj() {
var DailyRotateFile = winston.transports.DailyRotateFile;
this._transport = new DailyRotateFile(this._props);
}
_createLoggerObj() {
this._logger = winston.createLogger({
transports: [this._transport],
exitOnError: false
});
}
_log(type, error, description, stage, vars) {
var logMsg = {};
var msg = '';
var fileIndex = 3;
if(this._isError(error)) {
var err = error;
msg = error.message;
fileIndex = 1;
} else {
var err = new Error();
msg = error;
}
var caller_line = err.stack.split("at ")[fileIndex];
var index = caller_line.indexOf("(");
var lastIndex = caller_line.lastIndexOf(")");
index = caller_line.slice(index + 1, lastIndex);
var line = index.match(/:[0-9]+:/).toLocaleString();
line = line.replace(/[^0-9]/g, '');
var curTime = new FE.utils.date();
var timestamp = curTime.format('YYYY-MM-DD HH:MM:SS');
logMsg.level = type || 'info';
logMsg.time = timestamp || '';
logMsg.msg = msg || '';
logMsg.desc = description || '';
logMsg.stg = stage || '000';
logMsg.file = index || 'Not Found';
logMsg.stack = err.stack || 'Not Found';
logMsg.line = line || 'Not Found';
var logStr = JSON.stringify(logMsg);
this._logger.log(type, logMsg);
}
info(error, description, stage, vars) {
return this._log('info', error, description, stage, vars);
}
error(error, description, stage, vars) {
return this._log('error', error, description, stage, vars);
}
warn(error, description, stage, vars) {
return this._log('warn', error, description, stage, vars);
}
verbose(error, description, stage, vars) {
return this._log('verbose', error, description, stage, vars);
}
debug(error, description, stage, vars) {
return this._log('debug', error, description, stage, vars);
}
silly(error, description, stage, vars) {
return this._log('silly', error, description, stage, vars);
}
/**
* Checks if value is an Error or Error-like object
* #static
* #param {Any} val Value to test
* #return {Boolean} Whether the value is an Error or Error-like object
*/
_isError(val) {
return !!val && typeof val === 'object' && (
val instanceof Error || (
val.hasOwnProperty('message') && val.hasOwnProperty('stack')
)
);
}
}
module.exports = LoggerHelper;
Now I want to store my logs into a mysql db table as well. I did come across a winston plugin for Mongo but I don't see any support for storing it into a mysql db. Is there a way I can achieve this?
Thanks in advance.
I was facing the same issue recently. after doing some research I found one package 'winston-sql-transport' to save logs into mysql.
see this:
const { Logger } = require('winston');
const { SQLTransport } = require('./../lib/winston-sql-transport');
const logger = new Logger({
transports: [
new SQLTransport({
tableName: 'winston_logs',
})]
});
module.exports = logger;
I'm having problems displaying my Haxe game in IE9. It's actually not displaying at all. We tracked down the issue inside the compiled JS file for Haxe and found out that the problem is within the haxe.HTTP API.
There are certain things that need to be checked and done for IE9 to work with xmlhttprequests. These things were not done in the Haxe API.
This is the http class without my fix:
this.url = url;
this.headers = new List();
this.params = new List();
this.async = true;
};
$hxClasses["haxe.Http"] = haxe.Http;
haxe.Http.__name__ = ["haxe","Http"];
haxe.Http.prototype = {
setParameter: function(param,value) {
this.params = Lambda.filter(this.params,function(p) {
return p.param != param;
});
this.params.push({ param : param, value : value});
return this;
}
,request: function(post) {
var me = this;
me.responseData = null;
var r = this.req = js.Browser.createXMLHttpRequest();
var onreadystatechange = function(_) {
if(r.readyState != 4) return;
var s;
try {
s = r.status;
} catch( e ) {
s = null;
}
if(s == undefined) s = null;
if(s != null) me.onStatus(s);
if(s != null && s >= 200 && s < 400) {
me.req = null;
me.onData(me.responseData = r.responseText);
} else if(s == null) {
me.req = null;
me.onError("Failed to connect or resolve host");
} else switch(s) {
case 12029:
me.req = null;
me.onError("Failed to connect to host");
break;
case 12007:
me.req = null;
me.onError("Unknown host");
break;
default:
me.req = null;
me.responseData = r.responseText;
me.onError("Http Error #" + r.status);
}
};
if(this.async) r.onreadystatechange = onreadystatechange;
var uri = this.postData;
if(uri != null) post = true; else {
var $it0 = this.params.iterator();
while( $it0.hasNext() ) {
var p = $it0.next();
if(uri == null) uri = ""; else uri += "&";
uri += encodeURIComponent(p.param) + "=" + encodeURIComponent(p.value);
}
}
try {
if(post) r.open("POST",this.url,this.async); else if(uri != null) {
var question = this.url.split("?").length <= 1;
r.open("GET",this.url + (question?"?":"&") + uri,this.async);
uri = null;
} else r.open("GET",this.url,this.async);
} catch( e1 ) {
me.req = null;
this.onError(e1.toString());
return;
}
if(!Lambda.exists(this.headers,function(h) {
return h.header == "Content-Type";
}) && post && this.postData == null) r.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
var $it1 = this.headers.iterator();
while( $it1.hasNext() ) {
var h1 = $it1.next();
r.setRequestHeader(h1.header,h1.value);
}
r.send(uri);
if(!this.async) onreadystatechange(null);
}
,onData: function(data) {
}
,onError: function(msg) {
}
,onStatus: function(status) {
}
,__class__: haxe.Http
};
and this is the code WITH the fix:
haxe.Http = function(url) {
this.url = url;
this.headers = new List();
this.params = new List();
this.async = true;
};
$hxClasses["haxe.Http"] = haxe.Http;
haxe.Http.__name__ = ["haxe","Http"];
haxe.Http.prototype = {
setParameter: function(param,value) {
this.params = Lambda.filter(this.params,function(p) {
return p.param != param;
});
this.params.push({ param : param, value : value});
return this;
}
,request: function(post) {
var me = this;
me.responseData = null;
var r = this.req = js.Browser.createXMLHttpRequest();
var onreadystatechange = function(_) {
console.log('in onreadystatechange function');
//if(r.readyState != 4) return;
console.log(r.responseText);
console.log('r.status: ' + r.status);
me.req = null;
me.onData(me.responseData = r.responseText);
};
if(typeof XDomainRequest != "undefined") {
console.log('XDomainRequest');
r.onload = onreadystatechange;
}
var uri = this.postData;
try {
console.log('calling r.open with url: ' + this.url);
r.open("GET",this.url);
} catch( e1 ) {
me.req = null;
this.onError(e1.toString());
return;
}
//r.send(uri);
//do it, wrapped in timeout to fix ie9
setTimeout(function () {
r.send();
}, 0);
//if(!this.async) onreadystatechange(null);
}
,onData: function(data) {
}
,onError: function(msg) {
}
,onStatus: function(status) {
}
,__class__: haxe.Http
};
Note that this only implements the IE9 fix without doing the if statements to keep support for other browsers. But it's really easy. the IF statement is simply
if(typeof XDomainRequest != "undefined") return new XDomainRequest();
Basically, I know what the issue is, I just have no idea how I can change these things within the core of Haxe itself.
Thanks.
https://github.com/HaxeFoundation/haxe/pull/3449
BAM! Got it working in a local version of my haxe. Fixed for all browsers and sent a pull request. :D
Good job on this one!
You have to contact the Haxe mailing list directly, most thinking heads are over there rather than here :)
https://groups.google.com/d/forum/haxelang
I would like to be able to have buttons that can play certain audio ranges from a larger file. Something like:
<button onclick="playClip('http://blah/source1.mp3', 2.5, 3.0, 1.0)">Play clip 1</button>
<button onclick="playClip('http://blah/source2.mp3', 10.0, 2.0, 0.5)">Play clip 2 slow</button>
where playClip has a pattern like this:
function playClip(src, startOffset, length, rate) {
// What to put here?
}
Or instead of a length, an ending offset.
Can some one point me to code that can do that, or help me write it? The closest I could find is https://gist.github.com/remy/753003/download# but I need different sized clips, from possibly different files, and with a playback rate specified. I'm afraid I've limited experience with Javascript.
I'm trying to replace a Silverlight app that does this.
Thanks.
-John
Either use Media Fragments URI syntax:
var src,
startOffset,
endOffset,
playbackRate,
audio = new Audio(src + '#t=' + startOffset + ',' + endOffset);
audio.onloadedmetadata = function() {
audio.playbackRate = playbackRate;
audio.play();
};
or timeupdate event:
var audio = new Audio( ... ),
startOffset,
endOffset,
playbackRate;
audio.onloadedmetadata = function() {
audio.playbackRate = playbackRate;
audio.currentTime = startOffset;
audio.play();
};
audio.ontimeupdate = function() {
if (audio.currentTime >= endOffset) {
audio.pause();
}
};
References:
Specifying playback range
Jumping to time offsets in HTML5 video
Here's an extract of my current code, which uses both the audio control's events and timeout to make sure the audio stops. There's a reference to a volume slider you might need to trim.
var jt_audioControl;
var jt_audioSource;
var jt_audioFiles;
var jt_audioFileIndex;
var jt_audioFile;
var jt_audioStartTime;
var jt_audioEndTime;
var jt_audioPlaybackRate;
var jt_audioTimeoutHandle;
var jt_audioLink;
var jt_audioMimeType;
var jt_audioMediaType;
var jt_volumeSlider;
function jt_onAudioTimeUpdate() {
if (jt_audioEndTime > 0.0) {
if (jt_audioControl.currentTime >= jt_audioEndTime) {
//alert('stopped: jt_audioControl.currentTime = ' + jt_audioControl.currentTime + ' jt_audioEndTime = ' + jt_audioEndTime);
jt_audioControl.pause();
//jt_audioStartTime = jt_audioEndTime = 0.0;
}
}
}
function jt_onAudioCanPlay() {
jt_audioControl.pause();
jt_audioControl.currentTime = jt_audioStartTime;
jt_audioControl.defaultPlaybackRate = jt_audioPlaybackRate;
jt_audioControl.playbackRate = jt_audioPlaybackRate;
jt_audioControl.play();
jt_audioControl.currentTime = jt_audioStartTime;
jt_volumeSliderChanged(); // Set initial value to slider.
var timeout = (((jt_audioEndTime - jt_audioStartTime)) / jt_audioPlaybackRate) * 1000;
//alert('jt_audioEndTime = ' + jt_audioEndTime + ', timeout = ' + timeout);
if (jt_audioEndTime > 0.0) {
jt_audioTimeoutHandle = setTimeout(jt_onAudioEnded, timeout);
//alert('jt_audioTimeoutHandle = ' + jt_audioTimeoutHandle);
}
else if (jt_audioTimeoutHandle != null) {
clearTimeout(jt_audioTimeoutHandle);
jt_audioTimeoutHandle = null;
}
}
function jt_onAudioEnded() {
//alert('ended called');
if (jt_audioFiles == null)
return;
while (jt_audioControl.position < jt_audioControl.duration)
;
jt_audioFileIndex = jt_audioFileIndex + 1;
if (jt_audioFileIndex < jt_audioFiles.length) {
jt_createAudio(jt_audioFiles[jt_audioFileIndex]);
}
else {
jt_audioControl.pause();
jt_audioFiles = null;
jt_audioFileIndex = 0;
}
}
function jt_onAudioError(e) {
var msg;
switch (e.target.error.code) {
case e.target.error.MEDIA_ERR_ABORTED:
msg = 'You aborted the video playback.';
break;
case e.target.error.MEDIA_ERR_NETWORK:
msg = 'A network error caused the video download to fail part-way.';
break;
case e.target.error.MEDIA_ERR_DECODE:
msg = 'The video playback was aborted due to a corruption problem or because the video used features your browser did not support.';
break;
case e.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED:
msg = 'The video could not be loaded, either because the server or network failed or because the format is not supported.';
break;
default:
msg = 'An unknown error occurred.';
break;
}
alert('Error loading media: ' + msg + ' Media file: ' + jt_audioFile + ' MIME type: ' + jt_audioMimeType);
}
function jt_addSource(url) {
var srcUrl;
var doConvertCheck = false;
var offset = url.lastIndexOf(".");
if (offset == -1) {
if (jt_audioSource == null) {
jt_audioSource = document.createElement('source');
jt_audioControl.appendChild(jt_audioSource);
}
jt_audioMimeType = 'audio/mpeg3';
jt_audioMediaType = 'audio/mpeg3';
jt_audioSource.type = jt_audioMediaType;
jt_audioSource.src = url;
jt_audioControl.load();
return;
}
var base = url.substr(0, offset);
var ext = url.substr(offset).toLowerCase();
var newExt = ext;
if (jt_audioControl.canPlayType('audio/mpeg3')) {
jt_audioMimeType = 'audio/mpeg3';
jt_audioMediaType = 'audio/mpeg3';
if (ext != '.mp3')
newExt = '-aa.mp3';
}
else if (jt_audioControl.canPlayType('audio/mpeg')) {
jt_audioMimeType = 'audio/mpeg3';
jt_audioMediaType = 'audio/mpeg';
if (ext != '.mp3')
newExt = '-aa.mp3';
}
else if (jt_audioControl.canPlayType('audio/mp3')) {
jt_audioMimeType = 'audio/mpeg3';
jt_audioMediaType = 'audio/mp3';
if (ext != '.mp3')
newExt = '-aa.mp3';
}
else if (jt_audioControl.canPlayType('audio/ogg')) {
jt_audioMimeType = 'audio/ogg';
jt_audioMediaType = 'audio/ogg';
if (ext != '.ogg')
newExt = '-aa.ogg';
}
else {
alert('Sorry, can not play file: ' + url);
}
srcUrl = base + newExt;
if (srcUrl.lastIndexOf('~', 0) === 0) {
if (window.location.hostname == '') {
srcUrl = srcUrl.substr(2);
}
else {
var url = 'http://' + window.location.hostname;
if (window.location.port.toString() != '')
url = usrl + ':' + window.location.port.toString()
srcUrl = url + srcUrl.substr(1);
}
}
//alert('srcUrl = ' + srcUrl);
if (jt_audioSource == null) {
jt_audioSource = document.createElement('source');
jt_audioControl.appendChild(jt_audioSource);
}
jt_audioSource.type = jt_audioMediaType;
if (doConvertCheck) {
jt_audioLink = "/ConvertCheck?path=" + srcUrl + "&" + "mimeType=" + jt_audioMimeType
jt_audioSource.src = jt_audioLink;
}
else {
jt_audioSource.src = srcUrl;
}
jt_audioControl.load();
}
function jt_extractTimeRange(url) {
var rangeFieldIndex = url.lastIndexOf("#t");
if (rangeFieldIndex >= 0) {
var rangeString = url.substr(rangeFieldIndex + 2);
var range = rangeString.split(',');
jt_audioStartTime = parseFloat(range[0]);
jt_audioEndTime = parseFloat(range[1]);
}
else {
jt_audioStartTime = 0.0;
jt_audioEndTime = 0.0;
return url;
}
return url.substr(0, rangeFieldIndex);
}
function jt_createAudio(url) {
url = jt_extractTimeRange(url);
if (jt_audioControl == null) {
jt_audioFile = url;
jt_audioControl = new Audio();
// The ontimeupdate handler seems to be called unreliably, so we'll use
// setTimeout as well in the oncanplay handler.
jt_audioControl.ontimeupdate = jt_onAudioTimeUpdate;
jt_audioControl.onloadedmetadata = jt_onAudioCanPlay;
jt_audioControl.onended = jt_onAudioEnded;
jt_audioControl.onerror = jt_onAudioError;
jt_addSource(url);
// We'll let the oncanplay call play once loaded.
}
else if (jt_audioFile != url) {
jt_audioFile = url;
jt_addSource(url);
}
else {
//jt_onAudioLoaded();
jt_audioControl.load();
}
}
function jt_playAudioFile(url) {
jt_audioFiles = null;
jt_audioFileIndex = 0;
jt_audioStartTime = 0.0;
jt_audioEndTime = 0.0;
jt_audioPlaybackRate = 1.0;
jt_createAudio(url);
}
function jt_playSlowAudioFile(url) {
jt_audioFiles = null;
jt_audioFileIndex = 0;
jt_audioStartTime = 0.0;
jt_audioEndTime = 0.0;
jt_audioPlaybackRate = 0.5;
jt_createAudio(url);
}
function jt_playAudioFileList(urls) {
jt_audioFiles = urls;
jt_audioFileIndex = 0;
jt_audioStartTime = 0.0;
jt_audioEndTime = 0.0;
jt_audioPlaybackRate = 1.0;
if ((urls != null) && (urls.length > 0)) {
jt_createAudio(urls[0]);
}
}
function jt_playSlowAudioFileList(urls) {
jt_audioFiles = urls;
jt_audioFileIndex = 0;
jt_audioStartTime = 0.0;
jt_audioEndTime = 0.0;
jt_audioPlaybackRate = 0.5;
if ((urls != null) && (urls.length > 0)) {
jt_createAudio(urls[0]);
}
}
function jt_playAudioFileSegment(url, startTime, endTime) {
jt_audioFiles = null;
jt_audioFileIndex = 0;
url = url + '#t' + startTime.toString() + ',' + endTime.toString();
jt_audioPlaybackRate = 1.0;
jt_createAudio(url);
}
function jt_playSlowAudioFileSegment(url, startTime, endTime) {
jt_audioFiles = null;
jt_audioFileIndex = 0;
url = url + '#t' + startTime.toString() + ',' + endTime.toString();
jt_audioPlaybackRate = 0.5;
jt_createAudio(url);
}
function jt_stopAudio() {
if (jt_audioControl != null)
jt_audioControl.pause();
}
function jt_volumeSliderChanged() {
if (jt_volumeSlider == null) {
jt_volumeSlider = document.getElementById('volumeSlider');
if (jt_volumeSlider == null)
return;
}
var value = jt_volumeSlider.value;
if (jt_audioControl != null)
jt_audioControl.volume = value / 10;
$.ajax({
url: "/Common/SetUserOptionAjax?key=AudioVolume&value=" + value.toString(),
type: "POST"
});
}
Impress.js supports a number of attributes:
data-x, data-y, data-z will move the slide on the screen in 3D space;
data-rotate, data-rotate-x, data-rotate-y rotate the element around the specified axis (in degrees);
data-scale – enlarges or shrinks the slide.
div id="intro" class="step" data-x="0" data-y="0">
<h2>Introducing Galaxy Nexus</h2>
<p>Android 4.0<br /> Super Amoled 720p Screen<br />
<img src="assets/img/nexus_1.jpg" width="232" height="458" alt="Galaxy Nexus" />
<!-- We are offsetting the second slide, rotating it and making it 1.8 times larger -->
<div id="simplicity" class="step" data-x="1100" data-y="1200" data-scale="1.8" data-rotate="190">
<h2>Simplicity in Android 4.0</h2>
<p>Android 4.0, Ice Cream Sandwich brings an entirely new look and feel..</p>
<img src="assets/img/nexus_2.jpg" width="289" height="535" alt="Galaxy Nexus" />
Impress.js
(function ( document, window ) {
'use strict';
// HELPER FUNCTIONS
var pfx = (function () {
var style = document.createElement('dummy').style,
prefixes = 'Webkit Moz O ms Khtml'.split(' '),
memory = {};
return function ( prop ) {
if ( typeof memory[ prop ] === "undefined" ) {
var ucProp = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + prefixes.join(ucProp + ' ') + ucProp).split(' ');
memory[ prop ] = null;
for ( var i in props ) {
if ( style[ props[i] ] !== undefined ) {
memory[ prop ] = props[i];
break;
}
}
}
return memory[ prop ];
}
})();
var arrayify = function ( a ) {
return [].slice.call( a );
};
var css = function ( el, props ) {
var key, pkey;
for ( key in props ) {
if ( props.hasOwnProperty(key) ) {
pkey = pfx(key);
if ( pkey != null ) {
el.style[pkey] = props[key];
}
}
}
return el;
}
var byId = function ( id ) {
return document.getElementById(id);
}
var $ = function ( selector, context ) {
context = context || document;
return context.querySelector(selector);
};
var $$ = function ( selector, context ) {
context = context || document;
return arrayify( context.querySelectorAll(selector) );
};
var translate = function ( t ) {
return " translate3d(" + t.x + "px," + t.y + "px," + t.z + "px) ";
};
var rotate = function ( r, revert ) {
var rX = " rotateX(" + r.x + "deg) ",
rY = " rotateY(" + r.y + "deg) ",
rZ = " rotateZ(" + r.z + "deg) ";
return revert ? rZ+rY+rX : rX+rY+rZ;
};
var scale = function ( s ) {
return " scale(" + s + ") ";
};
var getElementFromUrl = function () {
// get id from url # by removing `#` or `#/` from the beginning,
// so both "fallback" `#slide-id` and "enhanced" `#/slide-id` will work
return byId( window.location.hash.replace(/^#\/?/,"") );
};
// CHECK SUPPORT
var ua = navigator.userAgent.toLowerCase();
var impressSupported = ( pfx("perspective") != null ) &&
( document.body.classList ) &&
( document.body.dataset ) &&
( ua.search(/(iphone)|(ipod)|(android)/) == -1 );
var roots = {};
var impress = window.impress = function ( rootId ) {
rootId = rootId || "impress";
// if already initialized just return the API
if (roots["impress-root-" + rootId]) {
return roots["impress-root-" + rootId];
}
// DOM ELEMENTS
var root = byId( rootId );
if (!impressSupported) {
root.className = "impress-not-supported";
return;
} else {
root.className = "";
}
// viewport updates for iPad
var meta = $("meta[name='viewport']") || document.createElement("meta");
// hardcoding these values looks pretty bad, as they kind of depend on the content
// so they should be at least configurable
meta.content = "width=1024, minimum-scale=0.75, maximum-scale=0.75, user-scalable=no";
if (meta.parentNode != document.head) {
meta.name = 'viewport';
document.head.appendChild(meta);
}
var canvas = document.createElement("div");
canvas.className = "canvas";
arrayify( root.childNodes ).forEach(function ( el ) {
canvas.appendChild( el );
});
root.appendChild(canvas);
var steps = $$(".step", root);
// SETUP
// set initial values and defaults
document.documentElement.style.height = "100%";
css(document.body, {
height: "100%",
overflow: "hidden"
});
var props = {
position: "absolute",
transformOrigin: "top left",
transition: "all 0s ease-in-out",
transformStyle: "preserve-3d"
}
css(root, props);
css(root, {
top: "50%",
left: "50%",
perspective: "1000px"
});
css(canvas, props);
var current = {
translate: { x: 0, y: 0, z: 0 },
rotate: { x: 0, y: 0, z: 0 },
scale: 1
};
var stepData = {};
var isStep = function ( el ) {
return !!(el && el.id && stepData["impress-" + el.id]);
}
steps.forEach(function ( el, idx ) {
var data = el.dataset,
step = {
translate: {
x: data.x || 0,
y: data.y || 0,
z: data.z || 0
},
rotate: {
x: data.rotateX || 0,
y: data.rotateY || 0,
z: data.rotateZ || data.rotate || 0
},
scale: data.scale || 1,
el: el
};
if ( !el.id ) {
el.id = "step-" + (idx + 1);
}
stepData["impress-" + el.id] = step;
css(el, {
position: "absolute",
transform: "translate(-50%,-50%)" +
translate(step.translate) +
rotate(step.rotate) +
scale(step.scale),
transformStyle: "preserve-3d"
});
});
// making given step active
var active = null;
var hashTimeout = null;
var goto = function ( el ) {
if ( !isStep(el) || el == active) {
// selected element is not defined as step or is already active
return false;
}
// Sometimes it's possible to trigger focus on first link with some keyboard action.
// Browser in such a case tries to scroll the page to make this element visible
// (even that body overflow is set to hidden) and it breaks our careful positioning.
//
// So, as a lousy (and lazy) workaround we will make the page scroll back to the top
// whenever slide is selected
//
// If you are reading this and know any better way to handle it, I'll be glad to hear about it!
window.scrollTo(0, 0);
var step = stepData["impress-" + el.id];
if ( active ) {
active.classList.remove("active");
}
el.classList.add("active");
root.className = "step-" + el.id;
// `#/step-id` is used instead of `#step-id` to prevent default browser
// scrolling to element in hash
//
// and it has to be set after animation finishes, because in chrome it
// causes transtion being laggy
window.clearTimeout( hashTimeout );
hashTimeout = window.setTimeout(function () {
window.location.hash = "#/" + el.id;
}, 1000);
var target = {
rotate: {
x: -parseInt(step.rotate.x, 10),
y: -parseInt(step.rotate.y, 10),
z: -parseInt(step.rotate.z, 10)
},
translate: {
x: -step.translate.x,
y: -step.translate.y,
z: -step.translate.z
},
scale: 1 / parseFloat(step.scale)
};
// check if the transition is zooming in or not
var zoomin = target.scale >= current.scale;
// if presentation starts (nothing is active yet)
// don't animate (set duration to 0)
var duration = (active) ? "1s" : "0";
css(root, {
// to keep the perspective look similar for different scales
// we need to 'scale' the perspective, too
perspective: step.scale * 1000 + "px",
transform: scale(target.scale),
transitionDuration: duration,
transitionDelay: (zoomin ? "500ms" : "0ms")
});
css(canvas, {
transform: rotate(target.rotate, true) + translate(target.translate),
transitionDuration: duration,
transitionDelay: (zoomin ? "0ms" : "500ms")
});
current = target;
active = el;
return el;
};
var prev = function () {
var prev = steps.indexOf( active ) - 1;
prev = prev >= 0 ? steps[ prev ] : steps[ steps.length-1 ];
return goto(prev);
};
var next = function () {
var next = steps.indexOf( active ) + 1;
next = next < steps.length ? steps[ next ] : steps[ 0 ];
return goto(next);
};
window.addEventListener("hashchange", function () {
goto( getElementFromUrl() );
}, false);
window.addEventListener("orientationchange", function () {
window.scrollTo(0, 0);
}, false);
// START
// by selecting step defined in url or first step of the presentation
goto(getElementFromUrl() || steps[0]);
return (roots[ "impress-root-" + rootId ] = {
goto: goto,
next: next,
prev: prev
});
}
})(document, window);
// EVENTS
(function ( document, window ) {
'use strict';
// keyboard navigation handler
document.addEventListener("keydown", function ( event ) {
if ( event.keyCode == 9 || ( event.keyCode >= 32 && event.keyCode <= 34 ) || (event.keyCode >= 37 && event.keyCode <= 40) ) {
switch( event.keyCode ) {
case 33: ; // pg up
case 37: ; // left
case 38: // up
impress().prev();
break;
case 9: ; // tab
case 32: ; // space
case 34: ; // pg down
case 39: ; // right
case 40: // down
impress().next();
break;
}
event.preventDefault();
}
}, false);
// delegated handler for clicking on the links to presentation steps
document.addEventListener("click", function ( event ) {
// event delegation with "bubbling"
// check if event target (or any of its parents is a link)
var target = event.target;
while ( (target.tagName != "A") &&
(target != document.body) ) {
target = target.parentNode;
}
if ( target.tagName == "A" ) {
var href = target.getAttribute("href");
// if it's a link to presentation step, target this step
if ( href && href[0] == '#' ) {
target = document.getElementById( href.slice(1) );
}
}
if ( impress().goto(target) ) {
event.stopImmediatePropagation();
event.preventDefault();
}
}, false);
// delegated handler for clicking on step elements
document.addEventListener("click", function ( event ) {
var target = event.target;
// find closest step element
while ( !target.classList.contains("step") &&
(target != document.body) ) {
target = target.parentNode;
}
if ( impress().goto(target) ) {
event.preventDefault();
}
}, false);
// touch handler to detect taps on the left and right side of the screen
document.addEventListener("touchstart", function ( event ) {
if (event.touches.length === 1) {
var x = event.touches[0].clientX,
width = window.innerWidth * 0.3,
result = null;
if ( x < width ) {
result = impress().prev();
} else if ( x > window.innerWidth - width ) {
result = impress().next();
}
if (result) {
event.preventDefault();
}
}
}, false);
})(document, window);
My question is the Impress.js supposedly to process the data-x, data-y, data-scale attribute of the div tag. But I don't see where the code in Impress.js is doing that. Can someone point it out?
This intro to datasets may help.
First this part checking support for .dataset:
// CHECK SUPPORT
var ua = navigator.userAgent.toLowerCase();
var impressSupported = ( pfx("perspective") != null ) &&
( document.body.classList ) &&
( document.body.dataset ) &&
( ua.search(/(iphone)|(ipod)|(android)/) == -1 );
Then this part of the code, about halfway down:
steps.forEach(function ( el, idx ) {
var data = el.dataset,
step = {
translate: {
x: data.x || 0,
y: data.y || 0,
z: data.z || 0
},
rotate: {
x: data.rotateX || 0,
y: data.rotateY || 0,
z: data.rotateZ || data.rotate || 0
},
scale: data.scale || 1,
el: el
};
Greetings,
This is my first post and I hope someone out there can help. I am an educator and I designed a quiz using Actionscript 3 (Adobe Flash) that is to determine all the different ways a family can have three children.
I have two buttons that enter either the letter B (for boy) or G (for girl) into an input text field named text_entry. I then have a submit button named enter_btn that checks to see if the entry into the input text is correct. If the input is correct, the timeline moves to the next problem (frame labeled checkmark); if it is incorrect the timeline moves to the end of the quiz (frame 62).
The following code works well for any particular correct single entry (ie: BGB). I need to write code in which all eight correct variations must be entered, but they can be entered in any order (permutation):
ie:
BBB,BBG,BGB,BGG,GBB,GBG,GGB,GGG; or
BGB,GGG,BBG,BBB,GGB,BGB,GGB,BGG; or
GGB,GGG,BBG,BBB,GGB,BGB,BGB,BGG; etc...
there are over 40,000 ways to enter these eight ways of having three children. Help!
baby_B.addEventListener(MouseEvent.CLICK, letterB);
function letterB(event:MouseEvent)
{
text_entry.appendText("B");
}
baby_G.addEventListener(MouseEvent.CLICK, letterG);
function letterG(event:MouseEvent)
{
text_entry.appendText("G");
}
enter_btn.addEventListener(MouseEvent.CLICK, check);
function check(event:MouseEvent):void {
var solution_S:Array=["BBB","BBG","BGB","BGG","GBB","GBG","GGB","GGG "];
if(solution_S.indexOf(text_entry.text)>=0)
{
gotoAndStop("checkmark");
}
else
{
gotoAndPlay(62);
}
}
If you know the correct code, please write it out for me. Thanks!
You will just need to keep a little bit of state to know what the user has entered so far. One possible way of doing that is to have a custom object/dictionary that you initialize outside all your functions, so that it is preserved during the transitions between frames/runs of the functions:
var solutionEntered:Object = {"BBB":false, "BBG":false, /*fill in rest */ };
Then in your function check you can perform an additional check, something like:
function check(event:MouseEvent):void {
var solution_S:Array=["BBB","BBG","BGB","BGG","GBB","GBG","GGB","GGG "];
if(solution_S.indexOf(text_entry.text)>=0) {
// We know the user entered a valid solution, let's check if
// then entered it before
if(solutionEntered[text_entry.text]) {
// yes they entered it before, do whatever you need to do
} else {
// no they haven't entered it, set the status as entered
solutionEntered[text_entry.text] = true;
}
// continue rest of your function
}
// continue the rest of your function
}
Note that this is not necessarily an optimal solution, but it keeps with the code style you already have.
Try this:
import flash.text.TextField;
import flash.events.MouseEvent;
import flash.display.Sprite;
var correctAnswers : Array = [ "BBB", "BBG", "BGB", "GBB", "BGG", "GGB", "GBG", "GGG" ];
var answersSoFar : Array;
var textField : TextField; //on stage
var submitButton : Sprite; //on stage
var correctAnswerCount : int;
//for testing
textField.text = "BBB,BBG,BGB,GBB,BGG,GGB,GBG,GGG";
//textField.text = "BGB,BBB,GGG,BBG,GBB,BGG,GGB,GBG,";
//textField.text = "BBB,BBG, BGB,GBB,BGG, GGB, GBG, GGG";
//textField.text = "BBB,BBG,BGB,GBB,BGG,GGB,GBG";
//textField.text = "BBB,BBG,BGB,GBB,BGG,GGB,GBG,GGG,BBG";
submitButton.addEventListener( MouseEvent.CLICK, onSubmit );
function onSubmit( event : MouseEvent ) : void
{
var answers : Array = getAnswersArray( textField.text );
answersSoFar = [];
correctAnswerCount = 0;
for each ( var answer : String in answers )
if ( answerIsCorrect( answer ) ) correctAnswerCount++;
if ( correctAnswerCount == correctAnswers.length ) trace( "correct" );
else trace( "incorrect" );
}
function getAnswersArray( string : String ) : Array
{
string = removeInvalidCharacters( string );
return string.split( "," );
}
function removeInvalidCharacters( string : String ) : String
{
var result : String = "";
for ( var i : int, len = string.length; i < len; i++ )
if ( string.charAt( i ) == "B" || string.charAt( i ) == "G" || string.charAt( i ) == "," )
result += string.charAt( i );
return result;
}
function answerIsCorrect( answer : String ) : Boolean
{
if ( answerIsADuplicate( answer ) ) return false;
else answersSoFar.push( answer );
if ( answerIsInListOfCorrectAnswers( answer ) ) return true;
return false;
}
function answerIsInListOfCorrectAnswers( answer : String ) : Boolean
{
if ( correctAnswers.indexOf( answer ) == -1 ) return false;
return true;
}
function answerIsADuplicate( answer : String ) : Boolean
{
if ( answersSoFar.indexOf( answer ) == -1 ) return false;
return true;
}
note that in the original code you pasted, you have an extra space in the last element of your correct answer list - "GGG " should be "GGG"
this works
baby_B.addEventListener(MouseEvent.CLICK, letterB);
function letterB(event:MouseEvent) {
text_entry.appendText("B");
}
baby_G.addEventListener(MouseEvent.CLICK, letterG);
function letterG(event:MouseEvent) {
text_entry.appendText("G");
}
var valid:Array = ["BBB","BBG","BGB","BGG","GBB","GBG","GGB","GGG"];
enter_btn.addEventListener(MouseEvent.CLICK, check);
function check(event:MouseEvent):void {
var parts:Array = text_entry.text.split(/,\s*/g); // split the text into component parts
var dup:Array = valid.slice(); // copy the correct list
while(parts.length){ // run through each answer component
var part:String = parts.pop(); // grab the last one
part = part.replace(/(^\s+|\s+$)/g, ''); // strip leading/trailing white space
var pos:int = dup.indexOf(part); // is it in the list of correct answers?
if(pos != -1){ // if it is...
dup.splice(pos, 1); // then remove that answer from the list
}
}
if(dup.length == 0) { // if it's 0, they got all the correct answers
gotoAndStop("checkmark");
} else { // otherwise, they didn't get one or more correct answers
gotoAndPlay(62);
}
}