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2938 lines (2820 loc) · 89.7 KB
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/*! p5.dom.js v0.3.4 Jan 19, 2017 */
/**
* <p>The web is much more than just canvas and p5.dom makes it easy to interact
* with other HTML5 objects, including text, hyperlink, image, input, video,
* audio, and webcam.</p>
* <p>There is a set of creation methods, DOM manipulation methods, and
* an extended p5.Element that supports a range of HTML elements. See the
* <a href='https://github.com/processing/p5.js/wiki/Beyond-the-canvas'>
* beyond the canvas tutorial</a> for a full overview of how this addon works.
*
* <p>Methods and properties shown in black are part of the p5.js core, items in
* blue are part of the p5.dom library. You will need to include an extra file
* in order to access the blue functions. See the
* <a href='http://p5js.org/libraries/#using-a-library'>using a library</a>
* section for information on how to include this library. p5.dom comes with
* <a href='http://p5js.org/download'>p5 complete</a> or you can download the single file
* <a href='https://raw.githubusercontent.com/lmccart/p5.js/master/lib/addons/p5.dom.js'>
* here</a>.</p>
* <p>See <a href='https://github.com/processing/p5.js/wiki/Beyond-the-canvas'>tutorial: beyond the canvas</a>
* for more info on how to use this libary.</a>
*
* @module p5.dom
* @submodule p5.dom
* @for p5.dom
* @main
*/
(function(root, factory) {
if (typeof define === 'function' && define.amd)
define('p5.dom', ['p5'], function(p5) {
factory(p5);
});
else if (typeof exports === 'object') factory(require('../p5'));
else factory(root['p5']);
})(this, function(p5) {
// =============================================================================
// p5 additions
// =============================================================================
/**
* Searches the page for an element with the given ID, class, or tag name (using the '#' or '.'
* prefixes to specify an ID or class respectively, and none for a tag) and returns it as
* a p5.Element. If a class or tag name is given with more than 1 element,
* only the first element will be returned.
* The DOM node itself can be accessed with .elt.
* Returns null if none found. You can also specify a container to search within.
*
* @method select
* @param {String} name id, class, or tag name of element to search for
* @param {String|p5.Element|HTMLElement} [container] id, p5.Element, or
* HTML element to search within
* @return {Object|p5.Element|null} p5.Element containing node found
* @example
* <div ><code class='norender'>
* function setup() {
* createCanvas(100, 100);
* //translates canvas 50px down
* select('canvas').position(100, 100);
* }
* </code></div>
* <div><code class='norender'>
* // these are all valid calls to select()
* var a = select('#moo');
* var b = select('#blah', '#myContainer');
* var c, e;
* if (b) {
* c = select('#foo', b);
* }
* var d = document.getElementById('beep');
* if (d) {
* e = select('p', d);
* }
* [a, b, c, d, e]; // unused
* </code></div>
*
*/
p5.prototype.select = function(e, p) {
p5._validateParameters('select', arguments);
var res = null;
var container = getContainer(p);
if (e[0] === '.') {
e = e.slice(1);
res = container.getElementsByClassName(e);
if (res.length) {
res = res[0];
} else {
res = null;
}
} else if (e[0] === '#') {
e = e.slice(1);
res = container.getElementById(e);
} else {
res = container.getElementsByTagName(e);
if (res.length) {
res = res[0];
} else {
res = null;
}
}
if (res) {
return this._wrapElement(res);
} else {
return null;
}
};
/**
* Searches the page for elements with the given class or tag name (using the '.' prefix
* to specify a class and no prefix for a tag) and returns them as p5.Elements
* in an array.
* The DOM node itself can be accessed with .elt.
* Returns an empty array if none found.
* You can also specify a container to search within.
*
* @method selectAll
* @param {String} name class or tag name of elements to search for
* @param {String} [container] id, p5.Element, or HTML element to search within
* @return {Array} Array of p5.Elements containing nodes found
* @example
* <div class='norender'><code>
* function setup() {
* createButton('btn');
* createButton('2nd btn');
* createButton('3rd btn');
* var buttons = selectAll('button');
*
* for (var i = 0; i < buttons.length; i++) {
* buttons[i].size(100, 100);
* }
* }
* </code></div>
* <div class='norender'><code>
* // these are all valid calls to selectAll()
* var a = selectAll('.moo');
* a = selectAll('div');
* a = selectAll('button', '#myContainer');
*
* var d = select('#container');
* a = selectAll('p', d);
*
* var f = document.getElementById('beep');
* a = select('.blah', f);
*
* a; // unused
* </code></div>
*
*/
p5.prototype.selectAll = function(e, p) {
p5._validateParameters('selectAll', arguments);
var arr = [];
var res;
var container = getContainer(p);
if (e[0] === '.') {
e = e.slice(1);
res = container.getElementsByClassName(e);
} else {
res = container.getElementsByTagName(e);
}
if (res) {
for (var j = 0; j < res.length; j++) {
var obj = this._wrapElement(res[j]);
arr.push(obj);
}
}
return arr;
};
/**
* Helper function for select and selectAll
*/
function getContainer(p) {
var container = document;
if (typeof p === 'string' && p[0] === '#') {
p = p.slice(1);
container = document.getElementById(p) || document;
} else if (p instanceof p5.Element) {
container = p.elt;
} else if (p instanceof HTMLElement) {
container = p;
}
return container;
}
/**
* Helper function for getElement and getElements.
*/
p5.prototype._wrapElement = function(elt) {
var children = Array.prototype.slice.call(elt.children);
if (elt.tagName === 'INPUT' && elt.type === 'checkbox') {
var converted = new p5.Element(elt);
converted.checked = function() {
if (arguments.length === 0) {
return this.elt.checked;
} else if (arguments[0]) {
this.elt.checked = true;
} else {
this.elt.checked = false;
}
return this;
};
return converted;
} else if (elt.tagName === 'VIDEO' || elt.tagName === 'AUDIO') {
return new p5.MediaElement(elt);
} else if (elt.tagName === 'SELECT') {
return this.createSelect(new p5.Element(elt));
} else if (
children.length > 0 &&
children.every(function(c) {
return c.tagName === 'INPUT' || c.tagName === 'LABEL';
})
) {
return this.createRadio(new p5.Element(elt));
} else {
return new p5.Element(elt);
}
};
/**
* Removes all elements created by p5, except any canvas / graphics
* elements created by createCanvas or createGraphics.
* Event handlers are removed, and element is removed from the DOM.
* @method removeElements
* @example
* <div class='norender'><code>
* function setup() {
* createCanvas(100, 100);
* createDiv('this is some text');
* createP('this is a paragraph');
* }
* function mousePressed() {
* removeElements(); // this will remove the div and p, not canvas
* }
* </code></div>
*
*/
p5.prototype.removeElements = function(e) {
p5._validateParameters('removeElements', arguments);
for (var i = 0; i < this._elements.length; i++) {
if (!(this._elements[i].elt instanceof HTMLCanvasElement)) {
this._elements[i].remove();
}
}
};
/**
* Helpers for create methods.
*/
function addElement(elt, pInst, media) {
var node = pInst._userNode ? pInst._userNode : document.body;
node.appendChild(elt);
var c = media ? new p5.MediaElement(elt) : new p5.Element(elt);
pInst._elements.push(c);
return c;
}
/**
* Creates a <div></div> element in the DOM with given inner HTML.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createDiv
* @param {String} [html] inner HTML for element created
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* createDiv('this is some text');
* </code></div>
*/
/**
* Creates a <p></p> element in the DOM with given inner HTML. Used
* for paragraph length text.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createP
* @param {String} [html] inner HTML for element created
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* createP('this is some text');
* </code></div>
*/
/**
* Creates a <span></span> element in the DOM with given inner HTML.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createSpan
* @param {String} [html] inner HTML for element created
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* createSpan('this is some text');
* </code></div>
*/
var tags = ['div', 'p', 'span'];
tags.forEach(function(tag) {
var method = 'create' + tag.charAt(0).toUpperCase() + tag.slice(1);
p5.prototype[method] = function(html) {
var elt = document.createElement(tag);
elt.innerHTML = typeof html === 'undefined' ? '' : html;
return addElement(elt, this);
};
});
/**
* Creates an <img> element in the DOM with given src and
* alternate text.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createImg
* @param {String} src src path or url for image
* @param {String} [alt] alternate text to be used if image does not load
* @param {Function} [successCallback] callback to be called once image data is loaded
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* createImg('http://p5js.org/img/asterisk-01.png');
* </code></div>
*/
p5.prototype.createImg = function() {
p5._validateParameters('createImg', arguments);
var elt = document.createElement('img');
var args = arguments;
var self;
var setAttrs = function() {
self.width = elt.offsetWidth || elt.width;
self.height = elt.offsetHeight || elt.height;
if (args.length > 1 && typeof args[1] === 'function') {
self.fn = args[1];
self.fn();
} else if (args.length > 1 && typeof args[2] === 'function') {
self.fn = args[2];
self.fn();
}
};
elt.src = args[0];
if (args.length > 1 && typeof args[1] === 'string') {
elt.alt = args[1];
}
elt.onload = function() {
setAttrs();
};
self = addElement(elt, this);
return self;
};
/**
* Creates an <a></a> element in the DOM for including a hyperlink.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createA
* @param {String} href url of page to link to
* @param {String} html inner html of link element to display
* @param {String} [target] target where new link should open,
* could be _blank, _self, _parent, _top.
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* createA('http://p5js.org/', 'this is a link');
* </code></div>
*/
p5.prototype.createA = function(href, html, target) {
p5._validateParameters('createA', arguments);
var elt = document.createElement('a');
elt.href = href;
elt.innerHTML = html;
if (target) elt.target = target;
return addElement(elt, this);
};
/** INPUT **/
/**
* Creates a slider <input></input> element in the DOM.
* Use .size() to set the display length of the slider.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createSlider
* @param {Number} min minimum value of the slider
* @param {Number} max maximum value of the slider
* @param {Number} [value] default value of the slider
* @param {Number} [step] step size for each tick of the slider (if step is set to 0, the slider will move continuously from the minimum to the maximum value)
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div><code>
* var slider;
* function setup() {
* slider = createSlider(0, 255, 100);
* slider.position(10, 10);
* slider.style('width', '80px');
* }
*
* function draw() {
* var val = slider.value();
* background(val);
* }
* </code></div>
*
* <div><code>
* var slider;
* function setup() {
* colorMode(HSB);
* slider = createSlider(0, 360, 60, 40);
* slider.position(10, 10);
* slider.style('width', '80px');
* }
*
* function draw() {
* var val = slider.value();
* background(val, 100, 100, 1);
* }
* </code></div>
*/
p5.prototype.createSlider = function(min, max, value, step) {
p5._validateParameters('createSlider', arguments);
var elt = document.createElement('input');
elt.type = 'range';
elt.min = min;
elt.max = max;
if (step === 0) {
elt.step = 0.000000000000000001; // smallest valid step
} else if (step) {
elt.step = step;
}
if (typeof value === 'number') elt.value = value;
return addElement(elt, this);
};
/**
* Creates a <button></button> element in the DOM.
* Use .size() to set the display size of the button.
* Use .mousePressed() to specify behavior on press.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createButton
* @param {String} label label displayed on the button
* @param {String} [value] value of the button
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* var button;
* function setup() {
* createCanvas(100, 100);
* background(0);
* button = createButton('click me');
* button.position(19, 19);
* button.mousePressed(changeBG);
* }
*
* function changeBG() {
* var val = random(255);
* background(val);
* }
* </code></div>
*/
p5.prototype.createButton = function(label, value) {
p5._validateParameters('createButton', arguments);
var elt = document.createElement('button');
elt.innerHTML = label;
if (value) elt.value = value;
return addElement(elt, this);
};
/**
* Creates a checkbox <input></input> element in the DOM.
* Calling .checked() on a checkbox returns if it is checked or not
*
* @method createCheckbox
* @param {String} [label] label displayed after checkbox
* @param {boolean} [value] value of the checkbox; checked is true, unchecked is false
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* var checkbox;
*
* function setup() {
* checkbox = createCheckbox('label', false);
* checkbox.changed(myCheckedEvent);
* }
*
* function myCheckedEvent() {
* if (this.checked()) {
* console.log('Checking!');
* } else {
* console.log('Unchecking!');
* }
* }
* </code></div>
*/
p5.prototype.createCheckbox = function() {
p5._validateParameters('createCheckbox', arguments);
var elt = document.createElement('div');
var checkbox = document.createElement('input');
checkbox.type = 'checkbox';
elt.appendChild(checkbox);
//checkbox must be wrapped in p5.Element before label so that label appears after
var self = addElement(elt, this);
self.checked = function() {
var cb = self.elt.getElementsByTagName('input')[0];
if (cb) {
if (arguments.length === 0) {
return cb.checked;
} else if (arguments[0]) {
cb.checked = true;
} else {
cb.checked = false;
}
}
return self;
};
this.value = function(val) {
self.value = val;
return this;
};
if (arguments[0]) {
var ran = Math.random()
.toString(36)
.slice(2);
var label = document.createElement('label');
checkbox.setAttribute('id', ran);
label.htmlFor = ran;
self.value(arguments[0]);
label.appendChild(document.createTextNode(arguments[0]));
elt.appendChild(label);
}
if (arguments[1]) {
checkbox.checked = true;
}
return self;
};
/**
* Creates a dropdown menu <select></select> element in the DOM.
* It also helps to assign select-box methods to p5.Element when selecting existing select box
* @method createSelect
* @param {boolean} [multiple] true if dropdown should support multiple selections
* @return {p5.Element}
* @example
* <div><code>
* var sel;
*
* function setup() {
* textAlign(CENTER);
* background(200);
* sel = createSelect();
* sel.position(10, 10);
* sel.option('pear');
* sel.option('kiwi');
* sel.option('grape');
* sel.changed(mySelectEvent);
* }
*
* function mySelectEvent() {
* var item = sel.value();
* background(200);
* text('it is a' + item + '!', 50, 50);
* }
* </code></div>
*/
/**
* @method createSelect
* @param {Object} existing DOM select element
* @return {p5.Element}
*/
p5.prototype.createSelect = function() {
p5._validateParameters('createSelect', arguments);
var elt, self;
var arg = arguments[0];
if (typeof arg === 'object' && arg.elt.nodeName === 'SELECT') {
self = arg;
elt = this.elt = arg.elt;
} else {
elt = document.createElement('select');
if (arg && typeof arg === 'boolean') {
elt.setAttribute('multiple', 'true');
}
self = addElement(elt, this);
}
self.option = function(name, value) {
var index;
//see if there is already an option with this name
for (var i = 0; i < this.elt.length; i++) {
if (this.elt[i].innerHTML === name) {
index = i;
break;
}
}
//if there is an option with this name we will modify it
if (index !== undefined) {
//if the user passed in false then delete that option
if (value === false) {
this.elt.remove(index);
} else {
//otherwise if the name and value are the same then change both
if (this.elt[index].innerHTML === this.elt[index].value) {
this.elt[index].innerHTML = this.elt[index].value = value;
//otherwise just change the value
} else {
this.elt[index].value = value;
}
}
} else {
//if it doesn't exist make it
var opt = document.createElement('option');
opt.innerHTML = name;
if (arguments.length > 1) opt.value = value;
else opt.value = name;
elt.appendChild(opt);
}
};
self.selected = function(value) {
var arr = [],
i;
if (arguments.length > 0) {
for (i = 0; i < this.elt.length; i++) {
if (value.toString() === this.elt[i].value) {
this.elt.selectedIndex = i;
}
}
return this;
} else {
if (this.elt.getAttribute('multiple')) {
for (i = 0; i < this.elt.selectedOptions.length; i++) {
arr.push(this.elt.selectedOptions[i].value);
}
return arr;
} else {
return this.elt.value;
}
}
};
return self;
};
/**
* Creates a radio button <input></input> element in the DOM.
* The .option() method can be used to set options for the radio after it is
* created. The .value() method will return the currently selected option.
*
* @method createRadio
* @param {String} [divId] the id and name of the created div and input field respectively
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div><code>
* var radio;
*
* function setup() {
* radio = createRadio();
* radio.option('black');
* radio.option('white');
* radio.option('gray');
* radio.style('width', '60px');
* textAlign(CENTER);
* fill(255, 0, 0);
* }
*
* function draw() {
* var val = radio.value();
* background(val);
* text(val, width / 2, height / 2);
* }
* </code></div>
* <div><code>
* var radio;
*
* function setup() {
* radio = createRadio();
* radio.option('apple', 1);
* radio.option('bread', 2);
* radio.option('juice', 3);
* radio.style('width', '60px');
* textAlign(CENTER);
* }
*
* function draw() {
* background(200);
* var val = radio.value();
* if (val) {
* text('item cost is $' + val, width / 2, height / 2);
* }
* }
* </code></div>
*/
p5.prototype.createRadio = function(existing_radios) {
p5._validateParameters('createRadio', arguments);
// do some prep by counting number of radios on page
var radios = document.querySelectorAll('input[type=radio]');
var count = 0;
if (radios.length > 1) {
var length = radios.length;
var prev = radios[0].name;
var current = radios[1].name;
count = 1;
for (var i = 1; i < length; i++) {
current = radios[i].name;
if (prev !== current) {
count++;
}
prev = current;
}
} else if (radios.length === 1) {
count = 1;
}
// see if we got an existing set of radios from callee
var elt, self;
if (typeof existing_radios === 'object') {
// use existing elements
self = existing_radios;
elt = this.elt = existing_radios.elt;
} else {
// create a set of radio buttons
elt = document.createElement('div');
self = addElement(elt, this);
}
// setup member functions
self._getInputChildrenArray = function() {
return Array.prototype.slice.call(this.elt.children).filter(function(c) {
return c.tagName === 'INPUT';
});
};
var times = -1;
self.option = function(name, value) {
var opt = document.createElement('input');
opt.type = 'radio';
opt.innerHTML = name;
if (value) opt.value = value;
else opt.value = name;
opt.setAttribute('name', 'defaultradio' + count);
elt.appendChild(opt);
if (name) {
times++;
var label = document.createElement('label');
opt.setAttribute('id', 'defaultradio' + count + '-' + times);
label.htmlFor = 'defaultradio' + count + '-' + times;
label.appendChild(document.createTextNode(name));
elt.appendChild(label);
}
return opt;
};
self.selected = function(value) {
var i;
var inputChildren = self._getInputChildrenArray();
if (value) {
for (i = 0; i < inputChildren.length; i++) {
if (inputChildren[i].value === value) inputChildren[i].checked = true;
}
return this;
} else {
for (i = 0; i < inputChildren.length; i++) {
if (inputChildren[i].checked === true) return inputChildren[i].value;
}
}
};
self.value = function(value) {
var i;
var inputChildren = self._getInputChildrenArray();
if (value) {
for (i = 0; i < inputChildren.length; i++) {
if (inputChildren[i].value === value) inputChildren[i].checked = true;
}
return this;
} else {
for (i = 0; i < inputChildren.length; i++) {
if (inputChildren[i].checked === true) return inputChildren[i].value;
}
return '';
}
};
return self;
};
/**
* Creates an <input></input> element in the DOM for text input.
* Use .size() to set the display length of the box.
* Appends to the container node if one is specified, otherwise
* appends to body.
*
* @method createInput
* @param {String} [value] default value of the input box
* @param {String} [type] type of text, ie text, password etc. Defaults to text
* @return {Object|p5.Element} pointer to p5.Element holding created node
* @example
* <div class='norender'><code>
* function setup() {
* var inp = createInput('');
* inp.input(myInputEvent);
* }
*
* function myInputEvent() {
* console.log('you are typing: ', this.value());
* }
* </code></div>
*/
p5.prototype.createInput = function(value, type) {
p5._validateParameters('createInput', arguments);
var elt = document.createElement('input');
elt.type = type ? type : 'text';
if (value) elt.value = value;
return addElement(elt, this);
};
/**
* Creates an <input></input> element in the DOM of type 'file'.
* This allows users to select local files for use in a sketch.
*
* @method createFileInput
* @param {Function} [callback] callback function for when a file loaded
* @param {String} [multiple] optional to allow multiple files selected
* @return {Object|p5.Element} pointer to p5.Element holding created DOM element
* @example
* var input;
* var img;
*
* function setup() {
* input = createFileInput(handleFile);
* input.position(0, 0);
* }
*
* function draw() {
* if (img) {
* image(img, 0, 0, width, height);
* }
* }
*
* function handleFile(file) {
* print(file);
* if (file.type === 'image') {
* img = createImg(file.data);
* img.hide();
* }
* }
*/
p5.prototype.createFileInput = function(callback, multiple) {
p5._validateParameters('createFileInput', arguments);
// Function to handle when a file is selected
// We're simplifying life and assuming that we always
// want to load every selected file
function handleFileSelect(evt) {
function makeLoader(theFile) {
// Making a p5.File object
var p5file = new p5.File(theFile);
return function(e) {
p5file.data = e.target.result;
callback(p5file);
};
}
// These are the files
var files = evt.target.files;
// Load each one and trigger a callback
for (var i = 0; i < files.length; i++) {
var f = files[i];
var reader = new FileReader();
reader.onload = makeLoader(f);
// Text or data?
// This should likely be improved
if (f.type.indexOf('text') > -1) {
reader.readAsText(f);
} else {
reader.readAsDataURL(f);
}
}
}
// Is the file stuff supported?
if (window.File && window.FileReader && window.FileList && window.Blob) {
// Yup, we're ok and make an input file selector
var elt = document.createElement('input');
elt.type = 'file';
// If we get a second argument that evaluates to true
// then we are looking for multiple files
if (multiple) {
// Anything gets the job done
elt.multiple = 'multiple';
}
// Now let's handle when a file was selected
elt.addEventListener('change', handleFileSelect, false);
return addElement(elt, this);
} else {
console.log(
'The File APIs are not fully supported in this browser. Cannot create element.'
);
}
};
/** VIDEO STUFF **/
function createMedia(pInst, type, src, callback) {
var elt = document.createElement(type);
// allow src to be empty
src = src || '';
if (typeof src === 'string') {
src = [src];
}
for (var i = 0; i < src.length; i++) {
var source = document.createElement('source');
source.src = src[i];
elt.appendChild(source);
}
if (typeof callback !== 'undefined') {
var callbackHandler = function() {
callback();
elt.removeEventListener('canplaythrough', callbackHandler);
};
elt.addEventListener('canplaythrough', callbackHandler);
}
var c = addElement(elt, pInst, true);
c.loadedmetadata = false;
// set width and height onload metadata
elt.addEventListener('loadedmetadata', function() {
c.width = elt.videoWidth;
c.height = elt.videoHeight;
// set elt width and height if not set
if (c.elt.width === 0) c.elt.width = elt.videoWidth;
if (c.elt.height === 0) c.elt.height = elt.videoHeight;
c.loadedmetadata = true;
});
return c;
}
/**
* Creates an HTML5 <video> element in the DOM for simple playback
* of audio/video. Shown by default, can be hidden with .hide()
* and drawn into canvas using video(). Appends to the container
* node if one is specified, otherwise appends to body. The first parameter
* can be either a single string path to a video file, or an array of string
* paths to different formats of the same video. This is useful for ensuring
* that your video can play across different browsers, as each supports
* different formats. See <a href='https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats'>this
* page</a> for further information about supported formats.
*
* @method createVideo
* @param {String|Array} src path to a video file, or array of paths for
* supporting different browsers
* @param {Object} [callback] callback function to be called upon
* 'canplaythrough' event fire, that is, when the
* browser can play the media, and estimates that
* enough data has been loaded to play the media
* up to its end without having to stop for
* further buffering of content
* @return {p5.MediaElement|p5.Element} pointer to video p5.Element
* @example
* <div><code>
* var vid;
* function setup() {
* vid = createVideo(['small.mp4', 'small.ogv', 'small.webm'], vidLoad);
* }
*
* // This function is called when the video loads
* function vidLoad() {
* vid.play();
* }
* </code></div>
*/
p5.prototype.createVideo = function(src, callback) {
p5._validateParameters('createVideo', arguments);
return createMedia(this, 'video', src, callback);
};
/** AUDIO STUFF **/
/**
* Creates a hidden HTML5 <audio> element in the DOM for simple audio
* playback. Appends to the container node if one is specified,
* otherwise appends to body. The first parameter
* can be either a single string path to a audio file, or an array of string
* paths to different formats of the same audio. This is useful for ensuring
* that your audio can play across different browsers, as each supports
* different formats. See <a href='https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats'>this
* page for further information about supported formats</a>.
*
* @method createAudio
* @param {String|String[]} [src] path to an audio file, or array of paths
* for supporting different browsers
* @param {Object} [callback] callback function to be called upon
* 'canplaythrough' event fire, that is, when the
* browser can play the media, and estimates that
* enough data has been loaded to play the media
* up to its end without having to stop for
* further buffering of content
* @return {p5.MediaElement|p5.Element} pointer to audio p5.Element /**
* @example
* <div><code>
* var ele;
* function setup() {
* ele = createAudio('assets/beat.mp3');
*
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