2019-05-14 03:55:35 +03:00
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<!DOCTYPE html>
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<html>
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<style>
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2019-11-15 17:14:55 +03:00
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.graph {
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position: relative;
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display: inline-block;
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width: attr(image-width);
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height: attr(graph-height);
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}
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.graph canvas {
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width: 100%;
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height: 100%;
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}
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.graph .controls {
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display: inline-block;
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position: absolute;
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top: 2px;
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right: 2px;
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}
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.graph .controls button {
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background: transparent;
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border: none;
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color: white;
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opacity: 0.7;
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}
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.graph .controls button.current {
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text-decoration: underline;
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opacity: 0.9;
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}
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2019-11-15 18:25:09 +03:00
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.graph .controls button.R:hover,
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.graph .controls button.current.R {
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background: red;
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}
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.graph .controls button.G:hover,
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.graph .controls button.current.G {
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background: green;
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}
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.graph .controls button.B:hover,
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.graph .controls button.current.B {
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background: blue;
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}
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2019-11-15 17:14:55 +03:00
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.graph .controls button:hover {
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opacity: 1;
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}
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2019-05-14 03:55:35 +03:00
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</style>
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<script src="../ext-lib/jquery.js"></script>
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<script src="../ext-lib/jquery-ui.js"></script>
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<script src="../lib/jli.js"></script>
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2019-11-17 06:15:41 +03:00
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<script src="ig-image-graph.js"></script>
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2019-05-14 03:55:35 +03:00
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2019-11-17 06:15:41 +03:00
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<script>
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2019-05-14 03:55:35 +03:00
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2019-11-16 15:55:58 +03:00
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// XXX should we make this a web components???
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// + would make everything transparent
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// - add a tag
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// - edit props
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// - handle events
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// - not sure what is the differenence practically...
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var makeWaveform = function(img, options){
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var color_modes = ['normalized', 'white', 'color']
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2019-11-16 15:55:58 +03:00
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options = options || {}
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options.mode = options.mode || 'color'
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options.color = options.color || color_modes[0]
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2019-11-15 18:25:09 +03:00
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// XXX configurable...
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2019-11-15 17:14:55 +03:00
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var type = 'waveform'
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var graph = waveform
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var buttons
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2019-11-15 18:25:09 +03:00
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var update = function(m){
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2019-11-16 15:55:58 +03:00
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m = options.mode = m || options.mode
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graph(img, canvas, m, options.color)
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2019-11-15 17:14:55 +03:00
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;(buttons || [])
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.forEach(function(b){
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b.classList.contains(m) ?
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2019-11-15 17:14:55 +03:00
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b.classList.add('current')
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: b.classList.remove('current') }) }
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2019-11-16 01:00:07 +03:00
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// handle img urls...
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if(typeof(img) == typeof('str')){
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var src = img
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img = document.createElement('img')
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img.onload = function(){
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container.setAttribute('image-width', img.width)
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container.setAttribute('image-height', img.height)
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update() }
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img.src = src }
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2019-11-15 17:14:55 +03:00
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// container...
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var container = document.createElement('div')
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container.classList.add('graph', type)
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2019-11-16 15:55:58 +03:00
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// XXX not sure why would we need shadow dom here...
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//var shadow = container.attachShadow({mode: 'open'})
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2019-11-15 17:14:55 +03:00
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// canvas...
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var canvas = document.createElement('canvas')
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container.appendChild(canvas)
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// controls...
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if(controls || controls === undefined){
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var controls = document.createElement('div')
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controls.classList.add('controls')
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// buttons...
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buttons = ['luminance', 'color', 'R', 'G', 'B']
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.map(function(m){
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var button = document.createElement('button')
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button.innerText = m
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button.classList.add(m)
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button.onclick = function(){
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update(m) }
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controls.appendChild(button)
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return button })
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// color mode switch...
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var button = document.createElement('button')
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2019-11-16 15:55:58 +03:00
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button.innerText = '('+ options.color[0] +')'
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button.onclick = function(){
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options.color = color_modes[
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(color_modes.indexOf(options.color) + 1)
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% color_modes.length]
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this.innerText = '('+ options.color[0] +')'
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update() }
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controls.appendChild(button)
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// add to block...
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container.appendChild(controls) }
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// meta stuff...
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container.setAttribute('graph-width', canvas.width)
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container.setAttribute('graph-height', canvas.height)
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container.setAttribute('image-width', img.width)
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container.setAttribute('image-height', img.height)
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2019-11-15 18:25:09 +03:00
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// init...
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2019-11-16 01:00:07 +03:00
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update()
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return container
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2019-05-14 03:55:35 +03:00
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}
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2019-11-15 17:14:55 +03:00
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var start = function(){
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//waveform(document.getElementById('input'), document.getElementById('waveform'), 'color')
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//histogram(document.getElementById('input'), document.getElementById('histogram'), 'color')
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2019-11-15 18:25:09 +03:00
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//document.body.appendChild(makeWaveform(document.getElementById('input'), 'color', 'normalized'))
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2019-11-15 17:14:55 +03:00
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document.body.appendChild(makeWaveform(document.getElementById('input')))
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2019-11-16 01:00:07 +03:00
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document.body.appendChild(makeWaveform('../images/splash-800x500.jpg'))
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2019-11-15 17:14:55 +03:00
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}
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2019-11-16 15:55:58 +03:00
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2019-05-14 03:55:35 +03:00
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</script>
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2019-11-16 15:55:58 +03:00
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2019-05-14 03:55:35 +03:00
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<body>
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<img id="input" src="../images/splash-800x500.jpg" onload="start()"/>
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2019-11-15 17:14:55 +03:00
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2019-11-16 15:55:58 +03:00
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<br>
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<ig-image-graph
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2019-11-17 01:50:23 +03:00
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graph="histogram"
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2019-11-16 15:55:58 +03:00
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src="../images/splash-800x500.jpg"
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mode="color"
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color="normalized"
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2019-11-17 06:15:41 +03:00
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style="width: 600px; height: 300px"></ig-image-graph>
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<ig-image-graph
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graph="waveform"
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src="../images/splash-800x500.jpg"
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mode="color"
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color="normalized" ></ig-image-graph>
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2019-11-16 15:55:58 +03:00
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2019-11-15 17:14:55 +03:00
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<!--
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2019-05-14 03:55:35 +03:00
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<br>
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<canvas id="waveform"></canvas>
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<br>
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<button onclick="waveform(getElementById('input'), getElementById('waveform'), 'luminance')">Luminance</button>
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<button onclick="waveform(getElementById('input'), getElementById('waveform'), 'color')">Color</button>
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<button onclick="waveform(getElementById('input'), getElementById('waveform'), 'R')">R</button>
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<button onclick="waveform(getElementById('input'), getElementById('waveform'), 'G')">G</button>
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<button onclick="waveform(getElementById('input'), getElementById('waveform'), 'B')">B</button>
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<br>
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<canvas id="histogram"></canvas>
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<br>
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<button onclick="histogram(getElementById('input'), getElementById('histogram'), 'luminance')">Luminance</button>
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<button onclick="histogram(getElementById('input'), getElementById('histogram'), 'color')">Color</button>
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<button onclick="histogram(getElementById('input'), getElementById('histogram'), 'R')">R</button>
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<button onclick="histogram(getElementById('input'), getElementById('histogram'), 'G')">G</button>
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<button onclick="histogram(getElementById('input'), getElementById('histogram'), 'B')">B</button>
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2019-11-15 17:14:55 +03:00
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-->
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<br>
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<br>
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<br>
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2019-05-14 03:55:35 +03:00
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</body>
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</html>
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2019-11-16 15:55:58 +03:00
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<!-- vim:set ts=4 sw=4 : -->
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