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index.js
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index.js
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var ZoomContent = function(el, options) {
if(!el) return
const rAF =
window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(callback) {
window.setTimeout(callback, 1000 / 60);
};
const utils = ZoomContent.utils
this.wrapper = typeof el === "string" ? document.querySelector(el) : el;
if (!this.wrapper || !this.wrapper.children) return
// script tag가 포함될 수 있으므로 제외하는 로직 추가
for (i = 0; i < this.wrapper.children.length; i++) {
if (this.wrapper.children[i].tagName === 'SCRIPT') {
continue
}
this.scroller = this.wrapper.children[i]
}
if(!this.scroller) return
this.scrollerStyle = this.scroller.style;
const innerH = window.innerHeight || document.body.clientHeight;
this.options = {
zoom: true,
zoomMin: 1,
zoomMax: 3,
startZoom: 1,
// 더블탭 코드 추가 수정
doubleTapZoom: 2,
handleClick: true,
resizeScrollbars: true,
mouseWheelSpeed: 20,
snapThreshold: 0.334,
startX: 0,
startY: 0,
scrollX: true,
scrollY: true,
directionLockThreshold: 5,
momentum: true,
bounce: false,
bounceTime: 600,
bounceEasing: "",
preventDefault: true,
preventDefaultException: {
tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/
},
HWCompositing: true,
useTransition: true,
useTransform: true,
useFixHeight: false,
useWindowScroll: true,
useTapAction: false,
fixHeightValue: innerH,
// [SHOPPINGW-2209] 크롬 55버전 이상에서 zoom 동작하지 않는 이슈
disablePointer: true
};
for (var i in options) {
this.options[i] = options[i];
}
this.wrapper.style.overflow = "hidden";
if (this.options.useFixHeight) {
this.wrapper.style.height = `${this.options.fixHeightValue}px`;
}
this.translateZ =
this.options.HWCompositing && utils.hasPerspective
? " translateZ(0)"
: "";
this.options.useTransition =
utils.hasTransition && this.options.useTransition;
this.options.useTransform = utils.hasTransform && this.options.useTransform;
this.options.eventPassthrough =
this.options.eventPassthrough === true
? "vertical"
: this.options.eventPassthrough;
this.options.preventDefault =
!this.options.eventPassthrough && this.options.preventDefault;
this.options.scrollY =
this.options.eventPassthrough == "vertical"
? false
: this.options.scrollY;
this.options.scrollX =
this.options.eventPassthrough == "horizontal"
? false
: this.options.scrollX;
this.options.freeScroll =
this.options.freeScroll && !this.options.eventPassthrough;
this.options.directionLockThreshold = this.options.eventPassthrough
? 0
: this.options.directionLockThreshold;
this.options.bounceEasing =
typeof this.options.bounceEasing === "string"
? utils.ease[this.options.bounceEasing] || utils.ease.circular
: this.options.bounceEasing;
this.options.resizePolling =
this.options.resizePolling === undefined
? 60
: this.options.resizePolling;
if (this.options.tap === true) {
this.options.tap = "tap";
}
if (this.options.shrinkScrollbars == "scale") {
this.options.useTransition = false;
}
this.options.invertWheelDirection = this.options.invertWheelDirection
? -1
: 1;
this.x = 0;
this.y = 0;
this.directionX = 0;
this.directionY = 0;
this._events = {};
this.bZoomAction = false;
this.scale = Math.min(
Math.max(this.options.startZoom, this.options.zoomMin),
this.options.zoomMax
);
this.beforeScale = this.scale;
this.prototype = ZoomContent.prototype
this._init();
this.refresh();
this.scrollTo(this.options.startX, this.options.startY);
this.enable();
this.elCurrent = null;
this.bZoomStart = false;
this.bZoomEnd = false;
this.clientY = 0;
};
/*******************************************************************************************************/
ZoomContent.prototype = {
_init: function() {
this._initEvents();
if (this.options.zoom) {
this._initZoom();
}
},
destroy: function() {
this._initEvents(true);
this._execEvent("destroy");
},
_transitionEnd: function(e) {
if (e.target != this.scroller || !this.isInTransition) {
return;
}
this._transitionTime();
if (!this.resetPosition(this.options.bounceTime)) {
this.isInTransition = false;
this._execEvent("scrollEnd");
}
},
_start: function(e) {
if (ZoomContent.utils.eventType[e.type] != 1) {
if (e.button !== 0) {
return;
}
}
if (
!this.enabled ||
(this.initiated &&
ZoomContent.utils.eventType[e.type] !== this.initiated)
) {
return;
}
/* 수정 */
if (this.bZoomAction) {
e.preventDefault();
}
// if ( this.options.preventDefault && !utils.isBadAndroid && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
/// / e.preventDefault();
// }
const point = e.touches ? e.touches[0] : e;
let pos;
this.initiated = ZoomContent.utils.eventType[e.type];
this.moved = false;
this.distX = 0;
this.distY = 0;
this.directionX = 0;
this.directionY = 0;
this.directionLocked = 0;
this._transitionTime();
this.startTime = ZoomContent.utils.getTime();
if (this.options.useTransition && this.isInTransition) {
this.isInTransition = false;
pos = this.getComputedPosition();
this._translate(Math.round(pos.x), Math.round(pos.y));
this._execEvent("scrollEnd");
} else if (!this.options.useTransition && this.isAnimating) {
this.isAnimating = false;
this._execEvent("scrollEnd");
}
this.startX = this.x;
this.startY = this.y;
this.absStartX = this.x;
this.absStartY = this.y;
this.pointX = point.pageX;
this.pointY = point.pageY;
this.clientY = point.clientY;
this.startPointY = point.pageY;
this.isUp = false;
this._execEvent("beforeScrollStart");
},
_move: function(e) {
if (
!this.enabled ||
ZoomContent.utils.eventType[e.type] !== this.initiated
) {
return;
}
const point = e.touches ? e.touches[0] : e;
let deltaX = point.pageX - this.pointX;
let deltaY = point.pageY - this.pointY;
const timestamp = ZoomContent.utils.getTime();
let newX;
let newY;
let absDistX;
let absDistY;
this.pointX = point.pageX;
this.pointY = point.pageY;
this.distX += deltaX;
this.distY += deltaY;
absDistX = Math.abs(this.distX);
absDistY = Math.abs(this.distY);
// if ( timestamp - this.endTime > 300 && (absDistX < 10 && absDistY < 10) ) {
// return;
// }
if (!this.directionLocked && !this.options.freeScroll) {
if (absDistX > absDistY + this.options.directionLockThreshold) {
this.directionLocked = "h";
} else if (absDistY >= absDistX + this.options.directionLockThreshold) {
this.directionLocked = "v";
} else {
this.directionLocked = "n";
}
}
if (this.directionLocked == "h") {
if (this.options.eventPassthrough == "vertical") {
e.preventDefault();
} else if (this.options.eventPassthrough == "horizontal") {
this.initiated = false;
return;
}
deltaY = 0;
} else if (this.directionLocked == "v") {
if (this.options.eventPassthrough == "horizontal") {
e.preventDefault();
} else if (this.options.eventPassthrough == "vertical") {
this.initiated = false;
return;
}
deltaX = 0;
}
deltaX = this.hasHorizontalScroll ? deltaX : 0;
deltaY = this.hasVerticalScroll ? deltaY : 0;
newX = this.x + deltaX;
newY = this.y + deltaY;
// Slow down if outsid!
if (newX > 0 || newX < this.maxScrollX) {
newX = this.options.bounce
? this.x + deltaX / 3
: newX > 0
? 0
: this.maxScrollX;
}
if (newY > 0 || newY < this.maxScrollY) {
newY = this.options.bounce
? this.y + deltaY / 3
: newY > 0
? 0
: this.maxScrollY;
}
this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;
if (!this.moved) {
this._execEvent("scrollStart");
}
this.moved = true;
this.isUp = Math.abs(newY) > Math.abs(this.y); // 아래로 이동하는지
if (this.options.useWindowScroll && this.x == newX) {
if (
(this.isUp &&
Math.abs(this.wrapperOffset.top) > document.body.scrollTop) ||
(!this.isUp &&
Math.abs(this.wrapperOffset.top) + this.wrapperHeight <
document.body.scrollTop +
(window.innerHeight || document.body.clientHeight))
) {
return;
}
}
if (this.x != newX || this.y != newY) {
e.preventDefault();
}
this._translate(newX, newY);
if (timestamp - this.startTime > 300) {
this.startTime = timestamp;
this.startX = this.x;
this.startY = this.y;
}
},
_end: function(e) {
if (
!this.enabled ||
ZoomContent.utils.eventType[e.type] !== this.initiated
) {
return;
}
if (
this.options.preventDefault &&
!ZoomContent.utils.preventDefaultException(
e.target,
this.options.preventDefaultException
)
) {
// e.preventDefault();
}
const point = e.changedTouches ? e.changedTouches[0] : e;
let momentumX;
let momentumY;
const duration = ZoomContent.utils.getTime() - this.startTime;
let newX = Math.round(this.x);
let newY = Math.round(this.y);
const distanceX = Math.abs(newX - this.startX);
const distanceY = Math.abs(newY - this.startY);
let time = 0;
let easing = "";
this.isInTransition = 0;
this.initiated = 0;
this.endTime = ZoomContent.utils.getTime();
if (this.resetPosition(this.options.bounceTime)) {
return;
}
this.scrollTo(newX, newY);
if (!this.moved) {
if (this.options.tap && ZoomContent.utils.hasTouch) {
const _self = this;
// 더블탭
if (this.doubleTapTimer && this.options.zoom) {
clearTimeout(this.doubleTapTimer);
this.doubleTapTimer = null;
this.zoom(this.scale == 1 ? 2 : 1, this.pointX, this.pointY);
this.resetPosition(200);
this._execEvent("scrollCancel");
} else {
this.doubleTapTimer = setTimeout(
function() {
clearTimeout(_self.doubleTapTimer);
_self.doubleTapTimer = null;
},
this.options.zoom ? 500 : 0
);
}
return;
}
if (this.options.tap) {
ZoomContent.utils.tap(e, this.options.tap);
}
if (this.options.click) {
ZoomContent.utils.click(e);
}
this._execEvent("scrollCancel");
return;
}
if (this.options.momentum && duration < 300) {
momentumX = this.hasHorizontalScroll
? ZoomContent.utils.momentum(
this.x,
this.startX,
duration,
this.maxScrollX,
this.options.bounce ? this.wrapperWidth : 0,
this.options.deceleration
)
: {
destination: newX,
duration: 0
};
momentumY = this.hasVerticalScroll
? ZoomContent.utils.momentum(
this.y,
this.startY,
duration,
this.maxScrollY,
this.options.bounce ? this.wrapperHeight : 0,
this.options.deceleration
)
: {
destination: newY,
duration: 0
};
newX = momentumX.destination;
newY = momentumY.destination;
time = Math.max(momentumX.duration, momentumY.duration);
this.isInTransition = 1;
}
if (this.options.snap) {
const snap = this._nearestSnap(newX, newY);
this.currentPage = snap;
time =
this.options.snapSpeed ||
Math.max(
Math.max(
Math.min(Math.abs(newX - snap.x), 1000),
Math.min(Math.abs(newY - snap.y), 1000)
),
300
);
newX = snap.x;
newY = snap.y;
this.directionX = 0;
this.directionY = 0;
easing = this.options.bounceEasing;
}
if (newX != this.x || newY != this.y) {
if (
newX > 0 ||
newX < this.maxScrollX ||
newY > 0 ||
newY < this.maxScrollY
) {
easing = ZoomContent.utils.ease.quadratic;
}
this.scrollTo(newX, newY, time, easing);
return;
}
this._execEvent("scrollEnd");
},
_resize: function() {
const that = this;
clearTimeout(this.resizeTimeout);
this.resizeTimeout = setTimeout(function() {
that.refresh();
}, this.options.resizePolling);
},
resetPosition: function(time) {
let x = this.x;
let y = this.y;
time = time || 0;
if (!this.hasHorizontalScroll || this.x > 0) {
x = 0;
} else if (this.x < this.maxScrollX) {
x = this.maxScrollX;
}
if (!this.hasVerticalScroll || this.y > 0) {
y = 0;
} else if (this.y < this.maxScrollY) {
y = this.maxScrollY;
}
if (x == this.x && y == this.y) {
return false;
}
this.scrollTo(x, y, time, this.options.bounceEasing);
return true;
},
disable: function() {
this.enabled = false;
},
enable: function() {
this.enabled = true;
},
_setWrapperCustomStyle: function() {
// if (this.scale == 1) {
// this.wrapper.style.overflow = null;
// //this.originWrapperHeight = "hidden";
// this.wrapper.style.height = "";
// } else {
// this.wrapper.style.overflow = "hidden";
// this.wrapper.style.height = this.options["fixHeightValue"] + "px";
// }
},
refresh: function(nScale) {
// 테스트 코드
this.scale = nScale || this.scale;
// 테스트 코드
const rf = this.wrapper.offsetHeight;
this.wrapperWidth = this.wrapper.clientWidth;
this.wrapperHeight = this.wrapper.clientHeight;
this.scrollerWidth = Math.round(this.scroller.offsetWidth * this.scale);
this.scrollerHeight = Math.round(this.scroller.offsetHeight * this.scale);
this.maxScrollX = this.wrapperWidth - this.scrollerWidth;
this.maxScrollY = this.wrapperHeight - this.scrollerHeight;
this.hasHorizontalScroll = this.options.scrollX && this.maxScrollX < 0;
this.hasVerticalScroll = this.options.scrollY && this.maxScrollY < 0;
if (!this.hasHorizontalScroll) {
this.maxScrollX = 0;
this.scrollerWidth = this.wrapperWidth;
}
if (!this.hasVerticalScroll) {
this.maxScrollY = 0;
this.scrollerHeight = this.wrapperHeight;
}
this.endTime = 0;
this.directionX = 0;
this.directionY = 0;
this.wrapperOffset = ZoomContent.utils.offset(this.wrapper);
this._execEvent("refresh");
// if (nScale) {
// this.x = 0;
// this.y = 0;
// }
this.resetPosition();
},
on: function(type, fn) {
if (!this._events[type]) {
this._events[type] = [];
}
this._events[type].push(fn);
},
off: function(type, fn) {
if (!this._events[type]) {
return;
}
const index = this._events[type].indexOf(fn);
if (index > -1) {
this._events[type].splice(index, 1);
}
},
_execEvent: function(type) {
if (!this._events[type]) {
return;
}
let i = 0;
const l = this._events[type].length;
if (!l) {
return;
}
for (; i < l; i++) {
this._events[type][i].apply(this, [].slice.call(arguments, 1));
}
},
scrollBy: function(x, y, time, easing) {
x = this.x + x;
y = this.y + y;
time = time || 0;
this.scrollTo(x, y, time, easing);
},
scrollTo: function(x, y, time, easing) {
easing = easing || ZoomContent.utils.ease.circular;
this.isInTransition = this.options.useTransition && time > 0;
if (!time || (this.options.useTransition && easing.style)) {
this._transitionTimingFunction(easing.style);
this._transitionTime(time);
this._translate(x, y);
} else {
this._animate(x, y, time, easing.fn);
}
},
scrollToElement: function(el, time, offsetX, offsetY, easing) {
el = el.nodeType ? el : this.scroller.querySelector(el);
if (!el) {
return;
}
const pos = ZoomContent.utils.offset(el);
pos.left -= this.wrapperOffset.left;
pos.top -= this.wrapperOffset.top;
if (offsetX === true) {
offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
}
if (offsetY === true) {
offsetY = Math.round(
el.offsetHeight / 2 - this.wrapper.offsetHeight / 2
);
}
pos.left -= offsetX || 0;
pos.top -= offsetY || 0;
pos.left =
pos.left > 0
? 0
: pos.left < this.maxScrollX
? this.maxScrollX
: pos.left;
pos.top =
pos.top > 0 ? 0 : pos.top < this.maxScrollY ? this.maxScrollY : pos.top;
time =
time === undefined || time === null || time === "auto"
? Math.max(Math.abs(this.x - pos.left), Math.abs(this.y - pos.top))
: time;
this.scrollTo(pos.left, pos.top, time, easing);
},
_transitionTime: function(time) {
time = time || 0;
this.scrollerStyle[
ZoomContent.utils.style.transitionDuration
] = `${time}ms`;
if (!time && ZoomContent.utils.isBadAndroid) {
this.scrollerStyle[ZoomContent.utils.style.transitionDuration] =
"0.001s";
}
if (this.indicators) {
for (let i = this.indicators.length; i--; ) {
this.indicators[i].transitionTime(time);
}
}
},
_transitionTimingFunction: function(easing) {
this.scrollerStyle[
ZoomContent.utils.style.transitionTimingFunction
] = easing;
if (this.indicators) {
for (let i = this.indicators.length; i--; ) {
this.indicators[i].transitionTimingFunction(easing);
}
}
},
_translate: function(x, y) {
if (this.options.useTransform) {
if (
((!this.bZoomStart && this.beforeScale > 1) ||
(this.bZoomStart && this.bZoomEnd)) &&
this.scale == 1 &&
this.beforeScale != this.scale &&
this.elCurrent != null
) {
const elOffset = ZoomContent.utils.offset(this.elCurrent);
const nY = Math.abs(elOffset.top);
const nGap = 55; // 상단 플로팅 영역
const nRealY = nY - nGap;
const isCenter = true;
const nCurrentY = isCenter
? nY -
((window.innerHeight || document.body.clientHeight) / 2 -
this.elCurrent.offsetHeight / 2)
: nY;
window.scrollTo(0, nCurrentY);
this.bZoomStart = this.bZoomEnd = false;
}
this.beforeScale = this.scale;
this.scrollerStyle[
ZoomContent.utils.style.transform
] = `translate(${x}px,${y}px) scale(${this.scale}) ${this.translateZ}`; /* REPLACE END: _translate */
} else {
x = Math.round(x);
y = Math.round(y);
this.scrollerStyle.left = `${x}px`;
this.scrollerStyle.top = `${y}px`;
}
this.x = x;
this.y = y;
if (this.indicators) {
for (let i = this.indicators.length; i--; ) {
this.indicators[i].updatePosition();
}
}
},
_initEvents: function(remove) {
const eventType = remove
? ZoomContent.utils.removeEvent
: ZoomContent.utils.addEvent;
const target = this.options.bindToWrapper ? this.wrapper : window;
eventType(window, "orientationchange", this);
eventType(window, "resize", this);
if (ZoomContent.utils.hasPointer && !this.options.disablePointer) {
eventType(
this.wrapper,
ZoomContent.utils.prefixPointerEvent("pointerdown"),
this
);
eventType(
target,
ZoomContent.utils.prefixPointerEvent("pointermove"),
this
);
eventType(
target,
ZoomContent.utils.prefixPointerEvent("pointercancel"),
this
);
eventType(
target,
ZoomContent.utils.prefixPointerEvent("pointerup"),
this
);
}
if (ZoomContent.utils.hasTouch && !this.options.disableTouch) {
eventType(this.wrapper, "touchstart", this);
eventType(target, "touchmove", this);
eventType(target, "touchcancel", this);
eventType(target, "touchend", this);
}
eventType(this.scroller, "transitionend", this);
eventType(this.scroller, "webkitTransitionEnd", this);
eventType(this.scroller, "oTransitionEnd", this);
eventType(this.scroller, "MSTransitionEnd", this);
},
isZoomUp: function() {
return this.scale > 1;
},
getComputedPosition: function() {
let matrix = window.getComputedStyle(this.scroller, null);
let x;
let y;
if (this.options.useTransform) {
matrix = matrix[ZoomContent.utils.style.transform]
.split(")")[0]
.split(", ");
x = +(matrix[12] || matrix[4]);
y = +(matrix[13] || matrix[5]);
} else {
x = +matrix.left.replace(/[^-\d.]/g, "");
y = +matrix.top.replace(/[^-\d.]/g, "");
}
return {
x: x,
y: y
};
},
_initZoom: function() {
this.scrollerStyle[ZoomContent.utils.style.transformOrigin] = "0 0";
},
_zoomStart: function(e) {
const c1 = Math.abs(e.touches[0].pageX - e.touches[1].pageX);
const c2 = Math.abs(e.touches[0].pageY - e.touches[1].pageY);
this.touchesDistanceStart = Math.sqrt(c1 * c1 + c2 * c2);
this.startScale = this.scale;
this.originX =
Math.abs(e.touches[0].pageX + e.touches[1].pageX) / 2 +
this.wrapperOffset.left -
this.x;
this.originY =
Math.abs(e.touches[0].pageY + e.touches[1].pageY) / 2 +
this.wrapperOffset.top -
this.y;
this._execEvent("zoomStart");
},
_zoom: function(e) {
if (
!this.enabled ||
ZoomContent.utils.eventType[e.type] !== this.initiated
) {
return;
}
if (this.options.preventDefault) {
e.preventDefault();
}
const c1 = Math.abs(e.touches[0].pageX - e.touches[1].pageX);
const c2 = Math.abs(e.touches[0].pageY - e.touches[1].pageY);
const distance = Math.sqrt(c1 * c1 + c2 * c2);
let scale = (1 / this.touchesDistanceStart) * distance * this.startScale;
let lastScale;
let x;
let y;
this.scaled = true;
if (scale < this.options.zoomMin) {
scale =
0.5 *
this.options.zoomMin *
Math.pow(2.0, scale / this.options.zoomMin);
} else if (scale > this.options.zoomMax) {
scale =
2.0 *
this.options.zoomMax *
Math.pow(0.5, this.options.zoomMax / scale);
}
lastScale = scale / this.startScale;
x = this.originX - this.originX * lastScale + this.startX;
y = this.originY - this.originY * lastScale + this.startY;
this.scale = scale;
this.scrollTo(x, y, 0);
},
_zoomEnd: function(e) {
if (
!this.enabled ||
ZoomContent.utils.eventType[e.type] !== this.initiated
) {
return;
}
if (this.options.preventDefault) {
// e.preventDefault();
}
let newX, newY, lastScale;
this.isInTransition = 0;
this.initiated = 0;
if (this.scale > this.options.zoomMax) {
this.scale = this.options.zoomMax;
} else if (this.scale < this.options.zoomMin) {
this.scale = this.options.zoomMin;
}
this.refresh();
lastScale = this.scale / this.startScale;
newX = this.originX - this.originX * lastScale + this.startX;
newY = this.originY - this.originY * lastScale + this.startY;
if (newX > 0) {
newX = 0;
} else if (newX < this.maxScrollX) {
newX = this.maxScrollX;
}
if (newY > 0) {
newY = 0;
} else if (newY < this.maxScrollY) {
newY = this.maxScrollY;
}
if (this.x != newX || this.y != newY) {
this.scrollTo(newX, newY, this.options.bounceTime);
}
this.scaled = false;
this._execEvent("zoomEnd");
},
zoom: function(scale, x, y, time) {
if (scale < this.options.zoomMin) {
scale = this.options.zoomMin;
} else if (scale > this.options.zoomMax) {
scale = this.options.zoomMax;
}
if (scale == this.scale) {
return;
}
const relScale = scale / this.scale;
x = x === undefined ? this.wrapperWidth / 2 : x;
y = y === undefined ? this.wrapperHeight / 2 : y;
time = time === undefined ? 300 : time;
x = x + this.wrapperOffset.left - this.x;
y = y + this.wrapperOffset.top - this.y;
x = x - x * relScale + this.x;
y = y - y * relScale + this.y;
this.scale = scale;
this.refresh(); // update boundaries
if (x > 0) {
x = 0;
} else if (x < this.maxScrollX) {
x = this.maxScrollX;
}
if (y > 0) {
y = 0;
} else if (y < this.maxScrollY) {
y = this.maxScrollY;
}
this.scrollTo(x, y, time);
},