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Merge branch 'changes' into develop

Georg Fischer 2013-09-26 20:38:56 +02:00
commit 4715d6e422
7 changed files with 81 additions and 322 deletions
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1
README.md

@ -22,7 +22,6 @@ to build, run ```grunt production``` from within the ```build/``` folder. the op
third party code used in this experiment third party code used in this experiment
--- ---
* [html5slider](http://frankyan.com/labs/html5slider/) by [fryn](https://github.com/fryn), MIT license
* [js signals](http://millermedeiros.github.io/js-signals/) by [millermedeiros](https://github.com/millermedeiros), MIT license * [js signals](http://millermedeiros.github.io/js-signals/) by [millermedeiros](https://github.com/millermedeiros), MIT license
* [require js](http://requirejs.org/), by [jrburke](jrburke), BSD & MIT license * [require js](http://requirejs.org/), by [jrburke](jrburke), BSD & MIT license
* [almond js](https://github.com/jrburke/almond), by [jrburke](jrburke), BSD & MIT license * [almond js](https://github.com/jrburke/almond), by [jrburke](jrburke), BSD & MIT license

22
index.html

@ -6,27 +6,31 @@
<link rel="stylesheet" href="styles/main.css" /> <link rel="stylesheet" href="styles/main.css" />
</head> </head>
<body> <body>
<article class="content"> <article class="content intro">
<h1 class="headline">glitch images</h1> <h1 class="headline">glitch images</h1>
<p>drag an image into the browser window to modify it. this script corrupts some bytes in a jpg image. because of the way <a href="https://en.wikipedia.org/wiki/JPEG">jpg</a> encoding works, the corrupted file still shows something. inspired by <a href="http://github.com/soulwire">soulwire</a>s <a href="http://blog.soulwire.co.uk/laboratory/flash/as3-bitmapdata-glitch-generator">experiment</a> in flash. this experiment was created by <a href="http://fishnation.de/">georg</a>. you can follow him on <a href="https://twitter.com/snorpey">twitter</a> or explore the source code on <a href="https://github.com/snorpey/jpg-glitch">github</a>.</p> <p>drag an image into the browser window to modify it. this script corrupts some bytes in a jpg image. because of the way <a href="https://en.wikipedia.org/wiki/JPEG">jpg</a> encoding works, the corrupted file still shows something. inspired by <a href="http://github.com/soulwire">soulwire</a>s <a href="http://blog.soulwire.co.uk/laboratory/flash/as3-bitmapdata-glitch-generator">experiment</a> in flash. this experiment was created by <a href="http://fishnation.de/">georg</a>. you can follow him on <a href="https://twitter.com/snorpey">twitter</a> or explore the source code on <a href="https://github.com/snorpey/jpg-glitch">github</a>.</p>
<p>if you like this one, you can check out some of his other <a href="http://snorpey.github.io/experiments/">javascript experiments</a>.</p> <p>if you like this one, you can check out some of his other <a href="http://snorpey.github.io/experiments/">javascript experiments</a>.</p>
</article> </article>
<div class="content" id="controls"> <div class="content" id="controls">
<div class="control-wrapper"> <div class="control-wrapper">
<label class="control-label" for="amount">glitch amount <span class="control-slider-value"></span></label> <label class="control-label" for="amount-slider">amount</label>
<input class="control-input" type="range" id="amount" min="0" max="100" value="50" /> <input class="control-input control-number" id="amount-number" type="number" min="0" max="99" value="50" maxlength="2" />
<input class="control-input control-slider" id="amount-slider" type="range" min="0" max="99" value="50" step="1" maxlength="2" />
</div> </div>
<div class="control-wrapper"> <div class="control-wrapper">
<label class="control-label" for="seed">seed <span class="control-slider-value"></span></label> <label class="control-label" for="seed-slider">seed</label>
<input class="control-input" type="range" id="seed" min="0" max="100" value="50" /> <input class="control-input control-number" id="seed-number" type="number" min="0" max="100" value="50" maxlength="2" />
<input class="control-input control-slider" id="seed-slider" type="range" min="0" max="100" value="50" step="1" maxlength="2" />
</div> </div>
<div class="control-wrapper"> <div class="control-wrapper">
<label class="control-label" for="iterations">iterations <span class="control-slider-value"></span></label> <label class="control-label" for="iterations-slider">iterations</label>
<input class="control-input" type="range" id="iterations" min="1" max="50" value="5" /> <input class="control-input control-number" id="iterations-number" type="number" min="1" max="50" value="5" maxlength="2" />
<input class="control-input control-slider" id="iterations-slider" type="range" min="1" max="50" value="5" step="1" maxlength="2"/>
</div> </div>
<div class="control-wrapper"> <div class="control-wrapper">
<label class="control-label" for="quality">jpg quality <span class="control-slider-value"></span></label> <label class="control-label" for="quality-slider">quality</label>
<input class="control-input" type="range" id="quality" min="1" max="90" value="50" /> <input class="control-input control-number" id="quality-number" type="number" min="1" max="99" value="50" maxlength="2" />
<input class="control-input control-slider" id="quality-slider" type="range" min="1" max="99" value="50" step="1" maxlength="2" />
</div> </div>
<button id="random-button" class="button is-hidden">randomize</button> <button id="random-button" class="button is-hidden">randomize</button>
</div> </div>

285
scripts/lib/html5slider.js

@ -1,285 +0,0 @@
/*
html5slider - a JS implementation of <input type=range> for Firefox 16 and up
https://github.com/fryn/html5slider
Copyright (c) 2010-2013 Frank Yan, <http://frankyan.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
(function() {
// test for native support
var test = document.createElement('input');
try {
test.type = 'range';
if (test.type == 'range')
return;
} catch (e) {
return;
}
// test for required property support
test.style.background = 'linear-gradient(red, red)';
if (!test.style.backgroundImage || !('MozAppearance' in test.style) ||
!document.mozSetImageElement || !this.MutationObserver)
return;
var scale;
var isMac = navigator.platform == 'MacIntel';
var thumb = {
radius: isMac ? 9 : 6,
width: isMac ? 22 : 12,
height: isMac ? 16 : 20
};
var track = 'linear-gradient(transparent ' + (isMac ?
'6px, #999 6px, #999 7px, #ccc 8px, #bbb 9px, #bbb 10px, transparent 10px' :
'9px, #999 9px, #bbb 10px, #fff 11px, transparent 11px') +
', transparent)';
var styles = {
'min-width': thumb.width + 'px',
'min-height': thumb.height + 'px',
'max-height': thumb.height + 'px',
padding: '0 0 ' + (isMac ? '2px' : '1px'),
border: 0,
'border-radius': 0,
cursor: 'default',
'text-indent': '-999999px' // -moz-user-select: none; breaks mouse capture
};
var options = {
attributes: true,
attributeFilter: ['min', 'max', 'step', 'value']
};
var forEach = Array.prototype.forEach;
var onInput = document.createEvent('HTMLEvents');
onInput.initEvent('input', true, false);
var onChange = document.createEvent('HTMLEvents');
onChange.initEvent('change', true, false);
if (document.readyState == 'loading')
document.addEventListener('DOMContentLoaded', initialize, true);
else
initialize();
function initialize() {
// create initial sliders
forEach.call(document.querySelectorAll('input[type=range]'), transform);
// create sliders on-the-fly
new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.addedNodes)
forEach.call(mutation.addedNodes, function(node) {
check(node);
if (node.childElementCount)
forEach.call(node.querySelectorAll('input'), check);
});
});
}).observe(document, { childList: true, subtree: true });
}
function check(input) {
if (input.localName == 'input' && input.type != 'range' &&
input.getAttribute('type') == 'range')
transform(input);
}
function transform(slider) {
var isValueSet, areAttrsSet, isChanged, isClick, prevValue, rawValue, prevX;
var min, max, step, range, value = slider.value;
// lazily create shared slider affordance
if (!scale) {
scale = document.body.appendChild(document.createElement('hr'));
style(scale, {
'-moz-appearance': isMac ? 'scale-horizontal' : 'scalethumb-horizontal',
display: 'block',
visibility: 'visible',
opacity: 1,
position: 'fixed',
top: '-999999px'
});
document.mozSetImageElement('__sliderthumb__', scale);
}
// reimplement value and type properties
var getValue = function() { return '' + value; };
var setValue = function setValue(val) {
value = '' + val;
isValueSet = true;
draw();
delete slider.value;
slider.value = value;
Object.defineProperty(slider, 'value', {
get: getValue,
set: setValue
});
};
Object.defineProperty(slider, 'value', {
get: getValue,
set: setValue
});
Object.defineProperty(slider, 'type', {
get: function() { return 'range'; }
});
// sync properties with attributes
['min', 'max', 'step'].forEach(function(prop) {
if (slider.hasAttribute(prop))
areAttrsSet = true;
Object.defineProperty(slider, prop, {
get: function() { return this.hasAttribute(prop) ? this.getAttribute(prop) : ''; },
set: function(val) { val === null ? this.removeAttribute(prop) : this.setAttribute(prop, val); }
});
});
// initialize slider
slider.readOnly = true;
style(slider, styles);
update();
new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.attributeName != 'value') {
update();
areAttrsSet = true;
}
// note that value attribute only sets initial value
else if (!isValueSet) {
value = slider.getAttribute('value');
draw();
}
});
}).observe(slider, options);
slider.addEventListener('mousedown', onDragStart, true);
slider.addEventListener('keydown', onKeyDown, true);
slider.addEventListener('focus', onFocus, true);
slider.addEventListener('blur', onBlur, true);
function onDragStart(e) {
isClick = true;
setTimeout(function() { isClick = false; }, 0);
if (e.button || !range)
return;
var width = parseFloat(getComputedStyle(this, 0).width);
var multiplier = (width - thumb.width) / range;
if (!multiplier)
return;
// distance between click and center of thumb
var dev = e.clientX - this.getBoundingClientRect().left - thumb.width / 2 -
(value - min) * multiplier;
// if click was not on thumb, move thumb to click location
if (Math.abs(dev) > thumb.radius) {
isChanged = true;
this.value -= -dev / multiplier;
}
rawValue = value;
prevX = e.clientX;
this.addEventListener('mousemove', onDrag, true);
this.addEventListener('mouseup', onDragEnd, true);
}
function onDrag(e) {
var width = parseFloat(getComputedStyle(this, 0).width);
var multiplier = (width - thumb.width) / range;
if (!multiplier)
return;
rawValue += (e.clientX - prevX) / multiplier;
prevX = e.clientX;
isChanged = true;
this.value = rawValue;
}
function onDragEnd() {
this.removeEventListener('mousemove', onDrag, true);
this.removeEventListener('mouseup', onDragEnd, true);
slider.dispatchEvent(onChange);
}
function onKeyDown(e) {
if (e.keyCode > 36 && e.keyCode < 41) { // 37-40: left, up, right, down
onFocus.call(this);
isChanged = true;
this.value = value + (e.keyCode == 38 || e.keyCode == 39 ? step : -step);
}
}
function onFocus() {
if (!isClick)
this.style.boxShadow = !isMac ? '0 0 0 2px #fb0' :
'inset 0 0 20px rgba(0,127,255,.1), 0 0 1px rgba(0,127,255,.4)';
}
function onBlur() {
this.style.boxShadow = '';
}
// determines whether value is valid number in attribute form
function isAttrNum(value) {
return !isNaN(value) && +value == parseFloat(value);
}
// validates min, max, and step attributes and redraws
function update() {
min = isAttrNum(slider.min) ? +slider.min : 0;
max = isAttrNum(slider.max) ? +slider.max : 100;
if (max < min)
max = min > 100 ? min : 100;
step = isAttrNum(slider.step) && slider.step > 0 ? +slider.step : 1;
range = max - min;
draw(true);
}
// recalculates value property
function calc() {
if (!isValueSet && !areAttrsSet)
value = slider.getAttribute('value');
if (!isAttrNum(value))
value = (min + max) / 2;;
// snap to step intervals (WebKit sometimes does not - bug?)
value = Math.round((value - min) / step) * step + min;
if (value < min)
value = min;
else if (value > max)
value = min + ~~(range / step) * step;
}
// renders slider using CSS background ;)
function draw(attrsModified) {
calc();
if (isChanged && value != prevValue)
slider.dispatchEvent(onInput);
isChanged = false;
if (!attrsModified && value == prevValue)
return;
prevValue = value;
var position = range ? (value - min) / range * 100 : 0;
var bg = '-moz-element(#__sliderthumb__) ' + position + '% no-repeat, ';
style(slider, { background: bg + track });
}
}
function style(element, styles) {
for (var prop in styles)
element.style.setProperty(prop, styles[prop], 'important');
}
})();

3
scripts/main.js

@ -23,8 +23,7 @@ require(
'src/import-button', 'src/import-button',
'src/random-button', 'src/random-button',
'util/feature-test', 'util/feature-test',
'lib/signals-1.0.0', 'lib/signals-1.0.0'
'lib/html5slider'
], ],
function( function(
process, process,

56
scripts/src/controls.js vendored

@ -5,6 +5,7 @@ define(
var values = { }; var values = { };
var is_initialized = false; var is_initialized = false;
var signals; var signals;
var controls;
function init( shared ) function init( shared )
{ {
@ -13,7 +14,7 @@ define(
if ( shared.feature['query-selector-all'] ) if ( shared.feature['query-selector-all'] )
{ {
var wrapper = document.getElementById( 'controls' ); var wrapper = document.getElementById( 'controls' );
var controls = document.querySelectorAll( '.control-input' ); controls = wrapper.querySelectorAll( '.control-input' );
wrapper.className += ' is-active'; wrapper.className += ' is-active';
@ -21,9 +22,10 @@ define(
{ {
var control = controls[i]; var control = controls[i];
control.addEventListener( 'change', controlUpdated, false ); control.addEventListener( 'input', controlUpdated, false );
updateValue( control.id, control.value );
updateValueInUI( control.id, control.value ); updateValue( getInputKey( control.id ), control.value );
updateInput( getCorrespondingInput( control.id ), control.value );
} }
is_initialized = true; is_initialized = true;
@ -40,22 +42,24 @@ define(
element = element.target; element = element.target;
} }
updateValue( element.id, element.value ); updateValue( getInputKey( element.id ), element.value );
updateValueInUI( element.id, element.value ); updateInput( getCorrespondingInput( element.id ), element.value );
} }
function setControlValues( new_values ) function setControlValues( new_values )
{ {
var control; var control;
var updated_values = { };
for ( var id in new_values ) for ( var id in new_values )
{ {
control = document.getElementById( id ); control = getCorrespondingInput( id );
control.value = new_values[id]; control.value = new_values[id];
controlUpdated( control ); controlUpdated( control );
updated_values[ getInputKey( id ) ] = new_values[id];
} }
values = new_values; values = updated_values;
signals['control-updated'].dispatch( values ); signals['control-updated'].dispatch( values );
} }
@ -69,10 +73,40 @@ define(
} }
} }
function updateValueInUI( key, value ) function updateInput( input, value )
{ {
var el = document.querySelectorAll( 'label[for="' + key + '"] .control-slider-value' )[0]; if ( input.value !== value )
el.innerHTML = value; {
input.value = value;
}
}
function getCorrespondingInput( id )
{
var result;
var key = getInputKey( id );
var element_id;
for ( var i = 0, len = controls.length; i < len; i++ )
{
element_id = controls[i].id;
if (
element_id !== id &&
element_id.indexOf( key ) !== -1
)
{
result = controls[i];
break;
}
}
return result;
}
function getInputKey( id )
{
return id.replace( '-slider', '' ).replace( '-number', '' );
} }
return { init: init }; return { init: init };

3
scripts/src/random-button.js

@ -13,14 +13,13 @@ define(
if ( shared.feature['query-selector-all'] ) if ( shared.feature['query-selector-all'] )
{ {
controls = document.querySelectorAll( '.control-input' ); controls = document.querySelectorAll( '.control-slider' );
constraints = getConstraints( controls ); constraints = getConstraints( controls );
random_button = document.getElementById( 'random-button' ); random_button = document.getElementById( 'random-button' );
random_button.addEventListener( 'click', buttonClicked, false ); random_button.addEventListener( 'click', buttonClicked, false );
random_button.classList.remove( 'is-hidden' ); random_button.classList.remove( 'is-hidden' );
} }
} }
function buttonClicked( event ) function buttonClicked( event )

33
styles/main.css

@ -63,8 +63,7 @@ a:hover
margin-bottom: 10px; margin-bottom: 10px;
} }
.content, .intro
.missing-feature
{ {
max-width: 650px; max-width: 650px;
} }
@ -84,7 +83,7 @@ a:hover
.control-wrapper .control-wrapper
{ {
float: left; float: left;
width: 100px; width: 200px;
margin-right: 20px; margin-right: 20px;
} }
@ -94,19 +93,29 @@ a:hover
color: #666; color: #666;
} }
.control-slider-value .control-slider
{
display: inline-block;
color: #333;
float: right;
}
.control-input
{ {
display: block; display: block;
width: 100px; float: left;
border: none;
width: 160px;
height: 1px;
margin-top: 6px;
background: #ddd;
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
} }
.control-number
{
display: block;
color: #333;
float: right;
border: none;
max-width: 30px;
font-family: sans-serif;
}
#import-input #import-input
{ {