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Новожилова Екатерина #49

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26 changes: 26 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -10,23 +10,49 @@
<header class="container-header">
<h3 class="animation-name">fadeIn</h3>
<button class="button" id="fadeInPlay">Play</button>
<button class="button" id="fadeInReset">Reset</button>
</header>
<div class="block hide" id="fadeInBlock"></div>
</div>
<div class="container">
<header class="container-header">
<h3 class="animation-name">move</h3>
<button class="button" id="movePlay">Play</button>
<button class="button" id="moveReset">Reset</button>
</header>
<div class="block" id="moveBlock"></div>
</div>
<div class="container">
<header class="container-header">
<h3 class="animation-name">scale</h3>
<button class="button" id="scalePlay">Play</button>
<button class="button" id="scaleReset">Reset</button>
</header>
<div class="block" id="scaleBlock"></div>
</div>
<div class="container">
<header class="container-header">
<h3 class="animation-name">moveAndHide</h3>
<button class="button" id="moveAndHidePlay">Play</button>
<button class="button" id="moveAndHideReset">Reset</button>
</header>
<div class="block show" id="moveAndHideBlock"></div>
</div>
<div class="container">
<header class="container-header">
<h3 class="animation-name">showAndHide</h3>
<button class="button" id="showAndHidePlay">Play</button>
</header>
<div class="block hide" id="showAndHideBlock"></div>
</div>
<div class="container">
<header class="container-header">
<h3 class="animation-name">heartBeating</h3>
<button class="button" id="heartBeatingPlay">Play</button>
<button class="button" id="heartBeatingStop">Stop</button>
</header>
<div class="block" id="heartBeatingBlock"></div>
</div>

<script src="index.js"></script>
</body>
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217 changes: 166 additions & 51 deletions index.js
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Original file line number Diff line number Diff line change
@@ -1,65 +1,180 @@
addListeners();

function addListeners() {
document.getElementById('fadeInPlay')
.addEventListener('click', function () {
const block = document.getElementById('fadeInBlock');
fadeIn(block, 5000);
});

document.getElementById('movePlay')
.addEventListener('click', function () {
const block = document.getElementById('moveBlock');
move(block, 1000, {x: 100, y: 10});
});

document.getElementById('scalePlay')
.addEventListener('click', function () {
const block = document.getElementById('scaleBlock');
scale(block, 1000, 1.25);
});
}
addListeners(false,
['fadeIn', 5000],
['scale', 1000, 1.25],
['moveAndHide', 1000, {x: 100, y: 20}],
['move', 1000, {x: 100, y: 10}],
['showAndHide', 1000]);

addListeners(true, ['heartBeating']);

function addListeners(cycle, ...listeners) {
for (let listener of listeners) {
let block = document.getElementById(listener[0] + 'Block');
let action = document.getElementById(listener[0] + (cycle ? 'Stop' : 'Reset'));

/**
* Блок плавно появляется из прозрачного.
* @param element — HTMLElement, который надо анимировать
* @param duration — Продолжительность анимации в миллисекундах
*/
function fadeIn(element, duration) {
element.style.transitionDuration = `${duration}ms`;
element.classList.remove('hide');
element.classList.add('show');
document.getElementById(listener[0] + 'Play').addEventListener('click', function () {
let element = animaster()[listener[0]](block, ...listener.slice(1));
action.addEventListener('click', cycle ? element.stop : element.reset)
});
}
}

/**
* Функция, передвигающая элемент
* @param element — HTMLElement, который надо анимировать
* @param duration — Продолжительность анимации в миллисекундах
* @param translation — объект с полями x и y, обозначающими смещение блока
*/
function move(element, duration, translation) {
element.style.transitionDuration = `${duration}ms`;
element.style.transform = getTransform(translation, null);
function animaster() {
return {
_steps: [],

buildHandler() {
let animaster = this;
return function () {
return animaster.play(this);
}
},

fadeOut(element, duration) {
return this.addFadeOut(duration).play(element);
},

fadeIn(element, duration) {
return this.addFadeIn(duration).play(element);
},

scale(element, duration, scale) {
return this.addScale(duration, scale).play(element);
},

move(element, duration, translation) {
return this.addMove(duration, translation).play(element);
},

showAndHide(element, duration) {
return this.addFadeIn(duration / 3)
.addDelay(duration / 3)
.addFadeOut(duration / 3)
.play(element);
},

moveAndHide(element, duration) {
return this.addMove(duration * 2 / 5, {x: 100, y: 20})
.addFadeOut(duration * 3 / 5)
.play(element);
},

heartBeating(element) {
return this.addScale(500, 1.4)
.addScale(500, 1)
.play(element, true);
},

resetFadeOut(element) {
element.style.transitionDuration = null;
element.classList.remove('hide');
element.classList.add('show');
},

resetFadeIn(element) {
element.style.transitionDuration = null;
element.classList.remove('show');
element.classList.add('hide');
},

resetMoveAndScale(element) {
element.style.transitionDuration = null;
element.style.transform = getTransform(0, 1);
},

addFadeIn(duration) {
let newAnimaster = this.copy()
newAnimaster._steps.push({
duration,
action: element => {
element.classList.remove('hide');
element.classList.add('show');},
reset: element => this.resetFadeIn(element)
})
return newAnimaster;
},

addScale(duration, scale) {
let newAnimaster = this.copy()
newAnimaster._steps.push({
duration,
action: element => element.style.transform = getTransform(null, scale),
reset: element => this.resetMoveAndScale(element)
})
return newAnimaster;
},

addMove(duration, translation) {
let newAnimaster = this.copy()
newAnimaster._steps.push({
duration,
action: element => element.style.transform = getTransform(translation, null),
reset: element => this.resetMoveAndScale(element)
})
return newAnimaster;
},

addFadeOut(duration) {
let newAnimaster = this.copy()
newAnimaster._steps.push({
duration,
action: element => {
element.classList.remove('show');
element.classList.add('hide');},
reset: element => this.resetFadeOut(element)
})
return newAnimaster;
},

addDelay(duration) {
let newAnimaster = this.copy()
newAnimaster._steps.push({
duration,
action: () => null,
reset: () => null
});
return newAnimaster;
},

copy() {
let newAnimaster = animaster();
newAnimaster._steps = this._steps.slice();
return newAnimaster;
},

play(element, cycle = false) {
let tick;
let timer = setTimeout(tick = index => {
element.style.transitionDuration = `${this._steps[index].duration}ms`;
this._steps[index].action(element);
if (cycle || index < this._steps.length - 1)
timer = setTimeout(tick, Math.round(this._steps[index].duration),
(index + 1) % this._steps.length);
}, 0, 0);

return {
stop: () => {clearTimeout(timer);},
reset: () => {
element.style.transitionDuration = null;
this._steps.slice().reverse().forEach(s => s.reset(element));
}
}
}
}
}

/**
* Функция, увеличивающая/уменьшающая элемент
* @param element — HTMLElement, который надо анимировать
* @param duration — Продолжительность анимации в миллисекундах
* @param ratio — во сколько раз увеличить/уменьшить. Чтобы уменьшить, нужно передать значение меньше 1
*/
function scale(element, duration, ratio) {
element.style.transitionDuration = `${duration}ms`;
element.style.transform = getTransform(null, ratio);
function setMode(element, show) {
element.classList.remove(show ? 'hide' : 'show');
element.classList.add(show ? 'show' : 'hide');
}

function getTransform(translation, ratio) {
function getTransform(translation, scale) {
const result = [];
if (translation) {
result.push(`translate(${translation.x}px,${translation.y}px)`);
}
if (ratio) {
result.push(`scale(${ratio})`);
if (scale) {
result.push(`scale(${scale})`);
}
return result.join(' ');
}