Created
March 25, 2018 12:20
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마우스로 드래그해서 스크롤링하기 예제
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| body { | |
| margin: 0; | |
| } | |
| .scroll-container { | |
| width:500px; | |
| height:500px; | |
| overflow:hidden; | |
| } | |
| .scroll-container:active { | |
| cursor: grab; | |
| cursor: -moz-grab; | |
| cursor: -webkit-grab; | |
| } | |
| .content { | |
| width: 1000px; | |
| height: 1000px; | |
| background-image:url('https://www.google.co.kr/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png'); | |
| user-select:none; | |
| } |
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| <div id="touch" class="scroll-container"> | |
| <div class="content"></div> | |
| <div class="content"></div> | |
| <div class="content"></div> | |
| </div> |
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| (function(w) { | |
| "use strict"; | |
| // easing 함수 주소 : http://goo.gl/5HLl8 | |
| var easing = { | |
| linear: function (t, b, c, d) { | |
| t /= d; | |
| return b + c * (t); | |
| }, | |
| easeOut: function (t, b, c, d) { | |
| var ts = (t /= d) * t; | |
| var tc = ts * t; | |
| return b + c * (0.9 * tc * ts + -4.35 * ts * ts + 8.6 * tc + -8.7 * ts + 4.55 * t); | |
| } | |
| }; | |
| var requestAniFrame = (function () { | |
| return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function (callback) { | |
| window.setTimeout(callback, 1000 / 60); | |
| }; | |
| })(); | |
| function ScrollAnimation(el, position) { | |
| this.elPosition = this.setElement(el, position); | |
| this.scrolled = false; | |
| this.canceled = false; | |
| } | |
| ScrollAnimation.prototype.setElement = function (el, position) { | |
| "use strict"; | |
| return { | |
| setScroll: function (val) { | |
| position === 'x' ? (el.scrollLeft = val) : (el.scrollTop = val); | |
| }, | |
| getScroll: function () { | |
| return position === 'x' ? (el.scrollLeft) : (el.scrollTop); | |
| } | |
| }; | |
| }; | |
| ScrollAnimation.prototype.getScrolled = function () { | |
| return this.scrolled; | |
| }; | |
| ScrollAnimation.prototype.stopAnimate = function () { | |
| if (this.scrolled) { | |
| this.canceled = true; | |
| } | |
| }; | |
| ScrollAnimation.prototype.scrollAnimation = function (to, duration, easingName, callback) { | |
| var start = this.elPosition.getScroll(), | |
| change = to - start, | |
| currentTime = 0, | |
| increment = 1000 / 60, | |
| self = this; | |
| duration = typeof duration === 'undefined' ? 500 : duration; | |
| this.scrolled = true; | |
| var animate = function () { | |
| currentTime += increment; | |
| var val = easing[easingName] ? easing[easingName](currentTime, start, change, duration) : easing["linear"](currentTime, start, change, duration); | |
| self.elPosition.setScroll(val); | |
| if (currentTime <= duration && !self.canceled) { | |
| requestAniFrame(animate); | |
| } else { | |
| if (callback && typeof(callback) === 'function') { | |
| callback(); | |
| } | |
| self.scrolled = false; | |
| self.canceled = false; | |
| } | |
| }; | |
| animate(); | |
| }; | |
| window.ScrollAnimation = ScrollAnimation; | |
| })(window || (window = {})); | |
| (function(w){ | |
| "use strict"; | |
| var ScrollAnimation = w.ScrollAnimation; | |
| var isDown = false; | |
| var x = 0, | |
| y = 0, | |
| offsetX = 0, | |
| offsetY = 0; | |
| var eventTarget = null; | |
| var scrollWidth = 0, | |
| scrollHeight = 0; | |
| var scrollEl = document.getElementById('touch'); | |
| var scrollXAnimate = new ScrollAnimation(scrollEl, 'x'); | |
| var scrollYAnimate = new ScrollAnimation(scrollEl, 'y'); | |
| var time = 0, millisecond = 0, distanceX = 0, distanceY = 0; | |
| function mouseMove(e) { | |
| if (!isDown || !eventTarget) { | |
| return false; | |
| } | |
| var self = this; | |
| requestAnimationFrame(function() { | |
| var currentX = e.clientX + x; | |
| var currentY = e.clientY + y; | |
| if(time > 0) { | |
| millisecond += e.timeStamp - time; | |
| time = e.timeStamp; | |
| distanceX += (currentX - offsetX); | |
| distanceY += (currentY - offsetY); | |
| } | |
| var scrollTop = y - (currentY - offsetY); | |
| var scrollLeft = x - (currentX - offsetX); | |
| if (scrollTop < 0 || scrollTop > scrollHeight) { | |
| scrollTop = scrollTop < 0 ? 0 : scrollTop > scrollHeight ? scrollHeight : scrollTop; | |
| offsetY = currentY; | |
| } | |
| if (scrollLeft < 0 || scrollLeft > scrollWidth) { | |
| scrollLeft = scrollLeft < 0 ? 0 : scrollLeft > scrollWidth ? scrollWidth : scrollLeft; | |
| offsetX = currentX; | |
| } | |
| self.scrollTop = scrollTop; | |
| self.scrollLeft = scrollLeft; | |
| y = scrollTop; | |
| x = scrollLeft; | |
| }); | |
| } | |
| function mouseDown(e) { | |
| scrollWidth = this.scrollWidth - this.offsetWidth; | |
| scrollHeight = this.scrollHeight - this.offsetHeight; | |
| y = this.scrollTop; | |
| x = this.scrollLeft; | |
| offsetX = e.clientX + x; | |
| offsetY = e.clientY + y; | |
| isDown = true; | |
| eventTarget = e; | |
| time = e.timeStamp; | |
| (scrollXAnimate.getScrolled() ? scrollXAnimate.stopAnimate() : ''); | |
| (scrollYAnimate.getScrolled() ? scrollYAnimate.stopAnimate() : ''); | |
| } | |
| function mouseUp(e) { | |
| if (e.type === 'mouseout' && this.contains(e.target)) { | |
| return false; | |
| } | |
| isDown = false; | |
| if(time > 0) { | |
| var targetX = x - (distanceX / (millisecond / 1000)) / 10; | |
| var targetY = y - (distanceY / (millisecond / 1000)) / 10; | |
| if(!isNaN(targetX) && !isNaN(targetY)) { | |
| scrollXAnimate.scrollAnimation(targetX, 1000, 'easeOut', null); | |
| scrollYAnimate.scrollAnimation(targetY, 1000, 'easeOut', null); | |
| } | |
| } | |
| time = 0; | |
| millisecond = 0; | |
| distanceX = 0; | |
| distanceY = 0; | |
| } | |
| scrollEl.addEventListener('mousedown', mouseDown, false); | |
| scrollEl.addEventListener('mouseup', mouseUp); | |
| scrollEl.addEventListener('mouseleave', mouseUp); | |
| scrollEl.addEventListener('mousemove', mouseMove, false); | |
| })(window || (window = {})); |
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https://jsfiddle.net/soonpyo/9p61abz5/
jsFiddle 예제