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index.html
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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Draw Cycle</title>
<style>
body {
margin: none;
padding: none;
background-color: white;
}
#app {
margin: 0 50px;
width: 300px;
height: 300px;
border: 1px solid black;
transform: translateY(60px);
}
svg {
z-index: -1;
}
#controls {
width: 250px;
margin: 0 auto;
}
#counter {
margin-left: 200px;
}
button {
padding: 20px;
font-size: large;
margin: 20px;
display: block;
}
#info {
position: relative;
top: 350px;
}
</style>
<script src="node_modules/es6-promise/dist/es6-promise.js"></script>
<script src="node_modules/rx/dist/rx.all.js"></script>
<script src="node_modules/@cycle/core/dist/cycle.js"></script>
<script src="node_modules/@cycle/dom/dist/cycle-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/raphael/2.1.4/raphael-min.js"></script>
<script src="connection.js"></script>
<script src="vdom-to-html.js"></script>
</head>
<body>
<a href="http://github.com/bahmutov/draw-cycle" class="github-corner"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#70B7FD; color:#fff; position: absolute; top: 0; z-index: 1; border: 0; right: 0;"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
<h2>Draw Cycle</h2>
<p>Simple <a href="http://cycle.js.org/">Cycle.js</a> program visualized.
Click on "Increment" or "Decrement" buttons.</p>
<div id="app"></div>
<div id="info">
<p>The example is taken from "Explicit dataflow" section of the website, and
copied below</p>
<p><code><pre>function main(sources) {
const decrement$ = sources.DOM
.select('.decrement').events('click').map(ev => -1);
const increment$ = sources.DOM
.select('.increment').events('click').map(ev => +1);
const action$ = Observable.merge(decrement$, increment$);
const count$ = action$.startWith(0).scan((x,y) => x+y);
const vtree$ = count$.map(count =>
div([
button('.decrement', 'Decrement'),
button('.increment', 'Increment'),
p('Counter: ' + count)
])
);
return { DOM: vtree$ };
}</pre></code></p>
</div>
<script>
function main(sources) {
// intent
const decrement$ = sources.DOM
.select('#minus').events('click')
.flatMap(function (ev) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c1, 'event', ev)
)
})
.map(function (ev) { return -1 })
.flatMap(function (x) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c3, x, x)
)
});
const increment$ = sources.DOM
.select('#plus').events('click')
.flatMap(function (ev) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c2, 'event', ev)
)
})
.map(function (ev) { return +1 })
.flatMap(function (x) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c4, x, x)
)
});
const action$ = Rx.Observable.merge(decrement$, increment$)
.flatMap(function (x) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c5, x, x)
)
});
// model
const count$ = action$.startWith(0)
.scan(function (x,y) { return x+y })
.tap(function (x) { drawing.setValue(x) })
.flatMap(function (x) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c6, x, x)
)
});
// view
const vtree$ = count$.map(function (count) {
return CycleDOM.div([
CycleDOM.button('#minus', 'Decrement'),
CycleDOM.button('#plus', 'Increment'),
CycleDOM.p('#counter', 'Counter: ' + count)
])
}).flatMap(function (x) {
return Rx.Observable.fromPromise(
drawing.moveEvent(drawing.c7, 'VDom', x, vdomToHtml(x))
)
});
return { DOM: vtree$ };
}
Cycle.run(main, { DOM: CycleDOM.makeDOMDriver('#app') });
var drawing = {
setValue: function () {},
moveEvent: function (_, label, x) {
return Promise.resolve(x)
}
}
setTimeout(function () {
// drawing code
var w = window,
d = document,
e = d.documentElement,
g = d.getElementsByTagName('body')[0],
x = w.innerWidth || e.clientWidth || g.clientWidth,
y = w.innerHeight|| e.clientHeight|| g.clientHeight;
if (y < 700) {
y = 700
}
// Creates canvas 320 × 200 at 10, 50
var paper = Raphael(0, 0, x, y);
function moveEvent(conn, labelText, value, bottomText) {
var n = conn.line.getTotalLength()
var pos = conn.line.getPointAtLength(0)
var radius = typeof labelText === 'string' ? 20 : 20
var circle = paper.circle(pos.x, pos.y, radius);
circle.attr({
cx: pos.x,
cy: pos.y,
fill: '#fff',
stroke: '#000'
})
var label = paper.text()
label.attr({
text: labelText,
'font-size': '12px'
})
var bottomLabel;
if (bottomText) {
bottomLabel = paper.text()
bottomLabel.attr({
text: bottomText,
'font-size': '12px',
'font-family': 'monospace',
'white-space': 'pre',
'text-anchor': 'end'
})
}
var counter = 0;
return new Promise(function (resolve) {
var interval;
function animate() {
if (n < counter) {
clearInterval(interval);
circle.remove();
label.remove();
if (bottomLabel) {
bottomLabel.remove()
}
resolve(value);
return;
}
var pos = conn.line.getPointAtLength(counter);
circle.attr({
cx: pos.x,
cy: pos.y
})
label.attr({
x: pos.x,
y: pos.y
})
if (bottomLabel) {
bottomLabel.attr({
x: pos.x - 50,
y: pos.y + 60
})
}
counter += 1;
}
interval = setInterval(animate, 10);
})
}
drawing.moveEvent = moveEvent;
var decClicks = paper.rect(400, 150, 100, 50)
decClicks.attr('fill', '#ffe')
decClicks.attr('stroke', '#f00')
var decClicksText = paper.text(450, 175)
decClicksText.attr({ text: 'map\nev => -1', 'font-size': '12px' })
var decrementsText = paper.text(550, 160)
decrementsText.attr({ text: 'decrements$', 'font-size': '15px' })
var incClicks = paper.rect(400, 250, 100, 50)
incClicks.attr('fill', '#ffe')
incClicks.attr('stroke', '#f00')
var incClicksText = paper.text(450, 275)
incClicksText.attr({ text: 'map\nev => +1', 'font-size': '15px' })
var incrementsText = paper.text(550, 285)
incrementsText.attr({ text: 'increments$', 'font-size': '15px' })
var actions = paper.rect(600, 200, 100, 50)
actions.attr('fill', '#ffe')
actions.attr('stroke', '#f00')
var actionsText = paper.text(650, 225)
actionsText.attr({ text: 'merge', 'font-size': '15px' })
var actions$Text = paper.text(690, 260)
actions$Text.attr({ text: 'actions$', 'font-size': '15px' })
// paper.connection(circle, circle2, '#00f')
// animating movement along path is based on
// http://jsfiddle.net/gyeSf/17/
drawing.c1 = paper.connection(document.querySelector('#minus'), decClicks, '#333')
drawing.c2 = paper.connection(document.querySelector('#plus'), incClicks, '#333')
drawing.c3 = paper.connection(decClicks, actions, '#333')
drawing.c4 = paper.connection(incClicks, actions, '#333')
// model
var scan = paper.rect(550, 400, 100, 50)
scan.attr('fill', '#ffe')
scan.attr('stroke', '#0f0')
var scanText = paper.text(600, 425)
scanText.attr({ text: 'scan\n(x,y) => x+y', 'font-size': '15px' })
var valueText = paper.text(680, 420)
valueText.attr({ text: 'value\n0', 'font-size': '15px' })
drawing.setValue = function (value) {
valueText.attr('text', 'value\n' + value)
}
var count$Text = paper.text(520, 410)
count$Text.attr({ text: 'count$', 'font-size': '15px' })
drawing.c5 = paper.connection(actions, scan, '#333')
// view
var vtree = paper.rect(360, 550, 340, 150)
vtree.attr('fill', '#ffe')
vtree.attr('stroke', '#00f')
var vtreeText = paper.text(370, 625)
vtreeText.attr({
text: 'map\n' +
'count => div([\n' +
' button(\'#minus\', \'Decrement\'),\n' +
' button(\'#plus\', \'Increment\'),\n' +
' p(\'#counter\', \'Counter: \' + count)\n' +
'])',
'font-size': '15px',
'font-family': 'monospace',
'white-space': 'pre',
'text-anchor': 'start'
})
var vtree$Text = paper.text(330, 635)
vtree$Text.attr({ text: 'vtree$', 'font-size': '15px' })
drawing.c6 = paper.connection(scan, vtree, '#333')
drawing.c7 = paper.connection(vtree, document.querySelector('#app'), '#333')
// Intent / Model / View blocks
var intentBlock = paper.rect(380, 120, 350, 200)
intentBlock.attr({
stroke: '#f00'
});
var intentText = paper.text(700, 130)
intentText.attr({
text: 'Intent',
'font-size': '15px',
fill: '#f00',
stroke: 'none'
})
var modelBlock = paper.rect(380, 330, 350, 170)
modelBlock.attr({
stroke: '#0f0'
});
var modelText = paper.text(700, 340)
modelText.attr({
text: 'Model',
'font-size': '15px',
fill: '#0f0',
stroke: 'none'
})
var viewText = paper.text(670, 560)
viewText.attr({
text: 'View',
'font-size': '15px',
fill: '#00f',
stroke: 'none'
})
}, 1000);
</script>
</body>
</html>