/**
- *
+ *
* Find more about the scrolling function at
- * http://cubiq.org/scrolling-div-for-mobile-webkit-turns-3/16
+ * http://cubiq.org/iscroll
*
- * Copyright (c) 2009 Matteo Spinelli, http://cubiq.org/
+ * Copyright (c) 2010 Matteo Spinelli, http://cubiq.org/
* Released under MIT license
* http://cubiq.org/dropbox/mit-license.txt
- *
- * Version 3.2.1 - Last updated: 2010.06.03
- *
+ *
+ * Version 3.6 - Last updated: 2010.08.24
+ *
*/
(function(){
-
function iScroll (el, options) {
- this.element = typeof el == 'object' ? el : document.getElementById(el);
- this.wrapper = this.element.parentNode;
-
- this.element.style.webkitTransitionProperty = '-webkit-transform';
- this.element.style.webkitTransitionTimingFunction = 'cubic-bezier(0,0,0.25,1)';
- this.element.style.webkitTransitionDuration = '0';
- this.element.style.webkitTransform = 'translate3d(0,0,0)';
-
- // Get options
- this.options = {
- bounce: true,
+ var that = this, i;
+ that.element = typeof el == 'object' ? el : document.getElementById(el);
+ that.wrapper = that.element.parentNode;
+
+ that.element.style.webkitTransitionProperty = '-webkit-transform';
+ that.element.style.webkitTransitionTimingFunction = 'cubic-bezier(0,0,0.25,1)';
+ that.element.style.webkitTransitionDuration = '0';
+ that.element.style.webkitTransform = translateOpen + '0,0' + translateClose;
+
+ // Default options
+ that.options = {
+ bounce: has3d,
+ momentum: has3d,
checkDOMChanges: true,
topOnDOMChanges: false,
- hScrollBar: true,
- vScrollBar: true,
- min_move: 5
+ hScrollbar: has3d,
+ vScrollbar: has3d,
+ fadeScrollbar: isIphone || isIpad || !isTouch,
+ shrinkScrollbar: isIphone || isIpad || !isTouch,
+ desktopCompatibility: false,
+ overflow: 'hidden',
+ snap: false
};
-
+
+ // User defined options
if (typeof options == 'object') {
- for (var i in options) {
- this.options[i] = options[i];
+ for (i in options) {
+ that.options[i] = options[i];
}
}
- this.refresh();
-
- this.element.addEventListener('touchstart', this);
- this.element.addEventListener('touchmove', this);
- this.element.addEventListener('touchend', this);
- window.addEventListener('orientationchange', this);
+ if (that.options.desktopCompatibility) {
+ that.options.overflow = 'hidden';
+ }
+
+ that.wrapper.style.overflow = that.options.overflow;
- if (this.options.checkDOMChanges) {
- this.element.addEventListener('DOMSubtreeModified', this);
+ that.refresh();
+
+ window.addEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', that, false);
+
+ if (isTouch || that.options.desktopCompatibility) {
+ that.element.addEventListener(START_EVENT, that, false);
+ that.element.addEventListener(MOVE_EVENT, that, false);
+ that.element.addEventListener(END_EVENT, that, false);
+ }
+
+ if (that.options.checkDOMChanges) {
+ that.element.addEventListener('DOMSubtreeModified', that, false);
}
}
iScroll.prototype = {
x: 0,
y: 0,
+ enabled: true,
handleEvent: function (e) {
+ var that = this;
+
switch (e.type) {
- case 'touchstart': this.onTouchStart(e); break;
- case 'touchmove': this.onTouchMove(e); break;
- case 'touchend': this.onTouchEnd(e); break;
- case 'webkitTransitionEnd': this.onTransitionEnd(e); break;
- case 'orientationchange': this.refresh(); break;
- case 'DOMSubtreeModified': this.onDOMModified(e); break;
+ case START_EVENT:
+ that.touchStart(e);
+ break;
+ case MOVE_EVENT:
+ that.touchMove(e);
+ break;
+ case END_EVENT:
+ that.touchEnd(e);
+ break;
+ case 'webkitTransitionEnd':
+ that.transitionEnd();
+ break;
+ case 'orientationchange':
+ case 'resize':
+ that.refresh();
+ break;
+ case 'DOMSubtreeModified':
+ that.onDOMModified(e);
+ break;
}
},
-
+
onDOMModified: function (e) {
- this.refresh();
-
- if (this.options.topOnDOMChanges && (this.x!=0 || this.y!=0)) {
- this.scrollTo(0,0,'0');
+ var that = this;
+
+ // (Hopefully) execute onDOMModified only once
+ if (e.target.parentNode != that.element) {
+ return;
+ }
+
+ setTimeout(function () { that.refresh(); }, 0);
+
+ if (that.options.topOnDOMChanges && (that.x!=0 || that.y!=0)) {
+ that.scrollTo(0,0,'0');
}
},
refresh: function () {
- this.scrollWidth = this.wrapper.clientWidth;
- this.scrollHeight = this.wrapper.clientHeight;
- this.maxScrollX = this.scrollWidth - this.element.offsetWidth;
- this.maxScrollY = this.scrollHeight - this.element.offsetHeight;
-
- var resetX = this.x, resetY = this.y;
- if (this.scrollX) {
- if (this.maxScrollX >= 0) {
+ var that = this,
+ resetX = this.x, resetY = this.y,
+ snap;
+
+ that.scrollWidth = that.wrapper.clientWidth;
+ that.scrollHeight = that.wrapper.clientHeight;
+ that.scrollerWidth = that.element.offsetWidth;
+ that.scrollerHeight = that.element.offsetHeight;
+ that.maxScrollX = that.scrollWidth - that.scrollerWidth;
+ that.maxScrollY = that.scrollHeight - that.scrollerHeight;
+ that.directionX = 0;
+ that.directionY = 0;
+
+ if (that.scrollX) {
+ if (that.maxScrollX >= 0) {
resetX = 0;
- } else if (this.x < this.maxScrollX) {
- resetX = this.maxScrollX;
+ } else if (that.x < that.maxScrollX) {
+ resetX = that.maxScrollX;
}
}
- if (this.scrollY) {
- if (this.maxScrollY >= 0) {
+ if (that.scrollY) {
+ if (that.maxScrollY >= 0) {
resetY = 0;
- } else if (this.y < this.maxScrollY) {
- resetY = this.maxScrollY;
+ } else if (that.y < that.maxScrollY) {
+ resetY = that.maxScrollY;
}
}
- if (resetX!=this.x || resetY!=this.y) {
- this.scrollTo(resetX,resetY,'0');
+ // Snap
+ if (that.options.snap) {
+ that.maxPageX = -Math.floor(that.maxScrollX/that.scrollWidth);
+ that.maxPageY = -Math.floor(that.maxScrollY/that.scrollHeight);
+
+ snap = that.snap(resetX, resetY);
+ resetX = snap.x;
+ resetY = snap.y;
+ }
+
+ if (resetX!=that.x || resetY!=that.y) {
+ that.setTransitionTime('0');
+ that.setPosition(resetX, resetY, true);
}
- this.scrollX = this.element.offsetWidth > this.scrollWidth ? true : false;
- this.scrollY = this.element.offsetHeight > this.scrollHeight ? true : false;
+ that.scrollX = that.scrollerWidth > that.scrollWidth;
+ that.scrollY = !that.scrollX || that.scrollerHeight > that.scrollHeight;
// Update horizontal scrollbar
- if (this.options.hScrollBar && this.scrollX) {
- this.scrollBarX = (this.scrollBarX instanceof scrollbar) ? this.scrollBarX : new scrollbar('horizontal', this.wrapper);
- this.scrollBarX.init(this.scrollWidth, this.element.offsetWidth);
- } else if (this.scrollBarX) {
- this.scrollBarX = this.scrollBarX.remove();
+ if (that.options.hScrollbar && that.scrollX) {
+ that.scrollBarX = that.scrollBarX || new scrollbar('horizontal', that.wrapper, that.options.fadeScrollbar, that.options.shrinkScrollbar);
+ that.scrollBarX.init(that.scrollWidth, that.scrollerWidth);
+ } else if (that.scrollBarX) {
+ that.scrollBarX = that.scrollBarX.remove();
}
// Update vertical scrollbar
- if (this.options.vScrollBar && this.scrollY) {
- this.scrollBarY = (this.scrollBarY instanceof scrollbar) ? this.scrollBarY : new scrollbar('vertical', this.wrapper);
- this.scrollBarY.init(this.scrollHeight, this.element.offsetHeight);
- } else if (this.scrollBarY) {
- this.scrollBarY = this.scrollBarY.remove();
+ if (that.options.vScrollbar && that.scrollY && that.scrollerHeight > that.scrollHeight) {
+ that.scrollBarY = that.scrollBarY || new scrollbar('vertical', that.wrapper, that.options.fadeScrollbar, that.options.shrinkScrollbar);
+ that.scrollBarY.init(that.scrollHeight, that.scrollerHeight);
+ } else if (that.scrollBarY) {
+ that.scrollBarY = that.scrollBarY.remove();
}
},
- setPosition: function (x, y) {
- this.x = x !== null ? x : this.x;
- this.y = y !== null ? y : this.y;
+ setPosition: function (x, y, hideScrollBars) {
+ var that = this;
- this.element.style.webkitTransform = 'translate3d(' + this.x + 'px,' + this.y + 'px,0)';
+ that.x = x;
+ that.y = y;
+
+ that.element.style.webkitTransform = translateOpen + that.x + 'px,' + that.y + 'px' + translateClose;
// Move the scrollbars
- if (this.scrollBarX) {
- this.scrollBarX.setPosition(this.scrollBarX.maxScroll / this.maxScrollX * this.x);
+ if (!hideScrollBars) {
+ if (that.scrollBarX) {
+ that.scrollBarX.setPosition(that.x);
+ }
+ if (that.scrollBarY) {
+ that.scrollBarY.setPosition(that.y);
+ }
+ }
+ },
+
+ setTransitionTime: function(time) {
+ var that = this;
+
+ time = time || '0';
+ that.element.style.webkitTransitionDuration = time;
+
+ if (that.scrollBarX) {
+ that.scrollBarX.bar.style.webkitTransitionDuration = time;
+ that.scrollBarX.wrapper.style.webkitTransitionDuration = has3d && that.options.fadeScrollbar ? '300ms' : '0';
}
- if (this.scrollBarY) {
- this.scrollBarY.setPosition(this.scrollBarY.maxScroll / this.maxScrollY * this.y);
+ if (that.scrollBarY) {
+ that.scrollBarY.bar.style.webkitTransitionDuration = time;
+ that.scrollBarY.wrapper.style.webkitTransitionDuration = has3d && that.options.fadeScrollbar ? '300ms' : '0';
}
},
-
- onTouchStart: function(e) {
- if (e.targetTouches.length != 1) {
- return false;
- }
-
- /* iOS 4 以外 特に androidだと ここで preventDefault しないと
- まともにスクロールしない/ブラウザがスクロールしてしまう/
- スクロールしたあとの位置にあるリンクがクリックされちゃうとか
- いろいろ起きる。逆に iOS4だと ここで preventDefault しちゃうと
- 長押ししたときの ディフォルトのポップアップが出てこなくなる */
- /* iOS4 意外だと ディフォルトのポップアップが使えなくなるが どうやら 打つ手なし... */
- if (!navigator.appVersion.match(/iPhone OS 4/)) {
+
+ touchStart: function(e) {
+ var that = this,
+ matrix;
+
+ /* iOS 4 以外 特に androidだと ここで preventDefault しないと
+ まともにスクロールしない/ブラウザがスクロールしてしまう/
+ スクロールしたあとの位置にあるリンクがクリックされちゃうとか
+ いろいろ起きる。逆に iOS4だと ここで preventDefault しちゃうと
+ 長押ししたときの ディフォルトのポップアップが出てこなくなる */
+ /* iOS4 意外だと ディフォルトのポップアップが使えなくなるが どうやら打つ手なし... */
+ if (!isIphone && !isIpad) {
e.preventDefault();
}
e.stopPropagation();
-
- this.element.style.webkitTransitionDuration = '0';
-
- if (this.scrollBarX) {
- this.scrollBarX.bar.style.webkitTransitionDuration = '0, 250ms';
- }
- if (this.scrollBarY) {
- this.scrollBarY.bar.style.webkitTransitionDuration = '0, 250ms';
+
+ if (!that.enabled) {
+ return;
}
- // Check if elem is really where it should be
- var theTransform = new WebKitCSSMatrix(window.getComputedStyle(this.element).webkitTransform);
- if (theTransform.m41 != this.x || theTransform.m42 != this.y) {
- this.setPosition(theTransform.m41, theTransform.m42);
+ that.scrolling = true; // This is probably not needed, but may be useful if iScroll is used in conjuction with other frameworks
+
+ that.moved = false;
+ that.dist = 0;
+
+ that.setTransitionTime('0');
+
+ // Check if the scroller is really where it should be
+ if (that.options.momentum || that.options.snap) {
+ matrix = new WebKitCSSMatrix(window.getComputedStyle(that.element).webkitTransform);
+ if (matrix.e != that.x || matrix.f != that.y) {
+ document.removeEventListener('webkitTransitionEnd', that, false);
+ that.setPosition(matrix.e, matrix.f);
+ that.moved = true;
+ }
}
- this.touchStartX = e.touches[0].pageX;
- this.scrollStartX = this.x;
+ that.touchStartX = isTouch ? e.changedTouches[0].pageX : e.pageX;
+ that.scrollStartX = that.x;
- this.touchStartY = e.touches[0].pageY;
- this.scrollStartY = this.y;
+ that.touchStartY = isTouch ? e.changedTouches[0].pageY : e.pageY;
+ that.scrollStartY = that.y;
- this.scrollStartTime = e.timeStamp;
- this.moved = false;
+ that.scrollStartTime = e.timeStamp;
+
+ that.directionX = 0;
+ that.directionY = 0;
},
-
- onTouchMove: function(e) {
- if (e.targetTouches.length != 1) {
- return false;
+
+ touchMove: function(e) {
+ var that = this,
+ pageX = isTouch ? e.changedTouches[0].pageX : e.pageX,
+ pageY = isTouch ? e.changedTouches[0].pageY : e.pageY,
+ leftDelta = that.scrollX ? pageX - that.touchStartX : 0,
+ topDelta = that.scrollY ? pageY - that.touchStartY : 0,
+ newX = that.x + leftDelta,
+ newY = that.y + topDelta;
+
+ if (!that.scrolling) {
+ return;
}
- /* touchstart の preventDefault やめて ここに追加すると iPhone4 だといい感じ*/
- if (navigator.appVersion.match(/iPhone OS 4/)) {
- e.preventDefault();
- }
- var leftDelta = this.scrollX === true ? e.touches[0].pageX - this.touchStartX : 0,
- topDelta = this.scrollY === true ? e.touches[0].pageY - this.touchStartY : 0,
- newX = this.x + leftDelta,
- newY = this.y + topDelta;
+ /* touchstart の preventDefault やめて ここに追加すると iPhone4 だといい感じ*/
+
+ if (isIphone || isIpad) {
+ e.preventDefault();
+ }
+ e.stopPropagation(); // Stopping propagation just saves some cpu cycles (I presume)
+
+ that.touchStartX = pageX;
+ that.touchStartY = pageY;
- if (Math.abs(topDelta) > this.options.min_move || Math.abs(leftDelta) > this.options.min_move) {
// Slow down if outside of the boundaries
- if (newX > 0 || newX < this.maxScrollX) {
- newX = this.options.bounce ? Math.round(this.x + leftDelta / 4) : this.x;
+ if (newX >= 0 || newX < that.maxScrollX) {
+ newX = that.options.bounce ? Math.round(that.x + leftDelta / 3) : (newX >= 0 || that.maxScrollX>=0) ? 0 : that.maxScrollX;
}
- if (newY > 0 || newY < this.maxScrollY) {
- newY = this.options.bounce ? Math.round(this.y + topDelta / 4) : this.y;
+ if (newY >= 0 || newY < that.maxScrollY) {
+ newY = that.options.bounce ? Math.round(that.y + topDelta / 3) : (newY >= 0 || that.maxScrollY>=0) ? 0 : that.maxScrollY;
}
- if (this.scrollBarX && !this.scrollBarX.visible) {
- this.scrollBarX.show();
+ if (that.dist > 5) { // 5 pixels threshold is needed on Android, but also on iPhone looks more natural
+ that.setPosition(newX, newY);
+ that.moved = true;
+ that.directionX = leftDelta > 0 ? -1 : 1;
+ that.directionY = topDelta > 0 ? -1 : 1;
+ } else {
+ that.dist+= Math.abs(leftDelta) + Math.abs(topDelta);
}
- if (this.scrollBarY && !this.scrollBarY.visible) {
- this.scrollBarY.show();
+ },
+
+ touchEnd: function(e) {
+ var that = this,
+ time = e.timeStamp - that.scrollStartTime,
+ point = isTouch ? e.changedTouches[0] : e,
+ target, ev,
+ momentumX, momentumY,
+ newDuration = 0,
+ newPositionX = that.x, newPositionY = that.y,
+ snap;
+
+ if (!that.scrolling) {
+ return;
}
+ that.scrolling = false;
- this.setPosition(newX, newY);
+ if (!that.moved) {
+ that.resetPosition();
- this.touchStartX = e.touches[0].pageX;
- this.touchStartY = e.touches[0].pageY;
- this.moved = true;
+ /* iOS4 では touchStart イベントは preventDefault() してないので
+ click イベントを発生させちゃうと 2重にクリックが発生したような
+ 状態になるので、スルーでいい */
+ if (isAndroid) {
+ // Find the last touched element
+ target = point.target;
+ while (target.nodeType != 1) {
+ target = target.parentNode;
+ }
+
+ // Create the fake event
+ target.style.pointerEvents = 'auto';
+ ev = document.createEvent('MouseEvents');
+ ev.initMouseEvent('click', true, true, e.view, 1,
+ point.screenX, point.screenY, point.clientX, point.clientY,
+ e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
+ 0, null);
+ ev._fake = true;
+ target.dispatchEvent(ev);
+ }
- // Prevent slingshot effect
- if( e.timeStamp-this.scrollStartTime > 250 ) {
- this.scrollStartX = this.x;
- this.scrollStartY = this.y;
- this.scrollStartTime = e.timeStamp;
+ return;
}
- }
- },
-
- onTouchEnd: function(e) {
- if (e.targetTouches.length > 0) {
- return false;
+
+ if (!that.options.snap && time > 250) { // Prevent slingshot effect
+ that.resetPosition();
+ return;
}
- if (!this.moved) {
- /* iOS4 では touchStart イベントは preventDefault() してないので
- click イベントを発生させちゃうと 2重にクリックが発生したような
- 状態になるので、スルーでいい */
- if (!navigator.appVersion.match(/iPhone OS 4/)) {
- // Find the last touched element
- var theTarget = e.changedTouches[0].target;
- if (theTarget.nodeType == 3) {
- theTarget = theTarget.parentNode;
- }
- // Create the fake event
- var theEvent = document.createEvent('MouseEvents');
- theEvent.initMouseEvent("click", true, true, document.defaultView,
- e.detail, e.screenX, e.screenY, e.clientX, e.clientY,
- e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
- e.button, e.relatedTarget);
- theTarget.dispatchEvent(theEvent);
- return false;
- }
- return true;
- }
-
- var time = e.timeStamp - this.scrollStartTime;
-
- var momentumX = this.scrollX === true
- ? this.momentum(this.x - this.scrollStartX,
- time,
- this.options.bounce ? -this.x + this.scrollWidth/4 : -this.x,
- this.options.bounce ? this.x + this.element.offsetWidth - this.scrollWidth + this.scrollWidth/4 : this.x + this.element.offsetWidth - this.scrollWidth)
- : { dist: 0, time: 0 };
-
- var momentumY = this.scrollY === true
- ? this.momentum(this.y - this.scrollStartY,
- time,
- this.options.bounce ? -this.y + this.scrollHeight/4 : -this.y,
- this.options.bounce ? this.y + this.element.offsetHeight - this.scrollHeight + this.scrollHeight/4 : this.y + this.element.offsetHeight - this.scrollHeight)
- : { dist: 0, time: 0 };
-
- if (!momentumX.dist && !momentumY.dist) {
- this.resetPosition();
- return false;
- }
-
- var newDuration = Math.max(Math.max(momentumX.time, momentumY.time), 1); // The minimum animation length must be 1ms
- var newPositionX = this.x + momentumX.dist;
- var newPositionY = this.y + momentumY.dist;
-
- this.element.addEventListener('webkitTransitionEnd', this);
-
- this.scrollTo(newPositionX, newPositionY, newDuration + 'ms');
+ if (that.options.momentum) {
+ momentumX = that.scrollX === true
+ ? that.momentum(that.x - that.scrollStartX,
+ time,
+ that.options.bounce ? -that.x + that.scrollWidth/5 : -that.x,
+ that.options.bounce ? that.x + that.scrollerWidth - that.scrollWidth + that.scrollWidth/5 : that.x + that.scrollerWidth - that.scrollWidth)
+ : { dist: 0, time: 0 };
+
+ momentumY = that.scrollY === true
+ ? that.momentum(that.y - that.scrollStartY,
+ time,
+ that.options.bounce ? -that.y + that.scrollHeight/5 : -that.y,
+ that.options.bounce ? (that.maxScrollY < 0 ? that.y + that.scrollerHeight - that.scrollHeight : 0) + that.scrollHeight/5 : that.y + that.scrollerHeight - that.scrollHeight)
+ : { dist: 0, time: 0 };
+
+ newDuration = Math.max(Math.max(momentumX.time, momentumY.time), 1); // The minimum animation length must be 1ms
+ newPositionX = that.x + momentumX.dist;
+ newPositionY = that.y + momentumY.dist;
+ }
- // Move the scrollbars
- if (this.scrollBarX) {
- this.scrollBarX.scrollTo(this.scrollBarX.maxScroll / this.maxScrollX * newPositionX, newDuration + 'ms');
- }
- if (this.scrollBarY) {
- this.scrollBarY.scrollTo(this.scrollBarY.maxScroll / this.maxScrollY * newPositionY, newDuration + 'ms');
+ if (that.options.snap) {
+ snap = that.snap(newPositionX, newPositionY);
+ newPositionX = snap.x;
+ newPositionY = snap.y;
+ newDuration = Math.max(snap.time, newDuration);
}
+
+ that.scrollTo(newPositionX, newPositionY, newDuration + 'ms');
},
-
- onTransitionEnd: function () {
- this.element.removeEventListener('webkitTransitionEnd', this);
- this.resetPosition();
+
+ transitionEnd: function () {
+ var that = this;
+ document.removeEventListener('webkitTransitionEnd', that, false);
+ that.resetPosition();
},
resetPosition: function () {
- var resetX = this.x,
- resetY = this.y;
-
- if (this.x >= 0) {
+ var that = this,
+ resetX = that.x,
+ resetY = that.y;
+
+ if (that.x >= 0) {
resetX = 0;
- } else if (this.x < this.maxScrollX) {
- resetX = this.maxScrollX;
+ } else if (that.x < that.maxScrollX) {
+ resetX = that.maxScrollX;
}
- if (this.y >= 0) {
+ if (that.y >= 0 || that.maxScrollY > 0) {
resetY = 0;
- } else if (this.y < this.maxScrollY) {
- resetY = this.maxScrollY;
+ } else if (that.y < that.maxScrollY) {
+ resetY = that.maxScrollY;
}
- if (resetX != this.x || resetY != this.y) {
- this.scrollTo(resetX, resetY, '500ms');
+ if (resetX != that.x || resetY != that.y) {
+ that.scrollTo(resetX, resetY);
+ } else {
+ if (that.moved) {
+ that.onScrollEnd(); // Execute custom code on scroll end
+ that.moved = false;
+ }
- if (this.scrollBarX && resetX != this.x) {
- this.scrollBarX.scrollTo(this.scrollBarX.maxScroll / this.maxScrollX * resetX, '500ms');
- }
- if (this.scrollBarY && resetY != this.y) {
- this.scrollBarY.scrollTo(this.scrollBarY.maxScroll / this.maxScrollY * resetY, '500ms');
+ // Hide the scrollbars
+ if (that.scrollBarX) {
+ that.scrollBarX.hide();
+ }
+ if (that.scrollBarY) {
+ that.scrollBarY.hide();
}
}
-
- // Hide the scrollbars
- if (this.scrollBarX) {
- this.scrollBarX.hide();
+ },
+
+ snap: function (x, y) {
+ var that = this, time;
+
+ if (that.directionX > 0) {
+ x = Math.floor(x/that.scrollWidth);
+ } else if (that.directionX < 0) {
+ x = Math.ceil(x/that.scrollWidth);
+ } else {
+ x = Math.round(x/that.scrollWidth);
+ }
+ that.pageX = -x;
+ x = x * that.scrollWidth;
+ if (x > 0) {
+ x = that.pageX = 0;
+ } else if (x < that.maxScrollX) {
+ that.pageX = that.maxPageX;
+ x = that.maxScrollX;
}
- if (this.scrollBarY) {
- this.scrollBarY.hide();
+
+ if (that.directionY > 0) {
+ y = Math.floor(y/that.scrollHeight);
+ } else if (that.directionY < 0) {
+ y = Math.ceil(y/that.scrollHeight);
+ } else {
+ y = Math.round(y/that.scrollHeight);
+ }
+ that.pageY = -y;
+ y = y * that.scrollHeight;
+ if (y > 0) {
+ y = that.pageY = 0;
+ } else if (y < that.maxScrollY) {
+ that.pageY = that.maxPageY;
+ y = that.maxScrollY;
}
+
+ // Snap with constant speed (proportional duration)
+ time = Math.round(Math.max(
+ Math.abs(that.x - x) / that.scrollWidth * 500,
+ Math.abs(that.y - y) / that.scrollHeight * 500
+ ));
+
+ return { x: x, y: y, time: time };
},
scrollTo: function (destX, destY, runtime) {
- this.element.style.webkitTransitionDuration = runtime || '400ms';
- this.setPosition(destX, destY);
+ var that = this;
+
+ if (that.x == destX && that.y == destY) {
+ that.resetPosition();
+ return;
+ }
+
+ that.moved = true;
+ that.setTransitionTime(runtime || '350ms');
+ that.setPosition(destX, destY);
+
+ if (runtime==='0' || runtime=='0s' || runtime=='0ms') {
+ that.resetPosition();
+ } else {
+ document.addEventListener('webkitTransitionEnd', that, false); // At the end of the transition check if we are still inside of the boundaries
+ }
+ },
+
+ scrollToPage: function (pageX, pageY, runtime) {
+ var that = this, snap;
+
+ if (!that.options.snap) {
+ that.pageX = -Math.round(that.x / that.scrollWidth);
+ that.pageY = -Math.round(that.y / that.scrollHeight);
+ }
+
+ if (pageX == 'next') {
+ pageX = ++that.pageX;
+ } else if (pageX == 'prev') {
+ pageX = --that.pageX;
+ }
+
+ if (pageY == 'next') {
+ pageY = ++that.pageY;
+ } else if (pageY == 'prev') {
+ pageY = --that.pageY;
+ }
+
+ pageX = -pageX*that.scrollWidth;
+ pageY = -pageY*that.scrollHeight;
+
+ snap = that.snap(pageX, pageY);
+ pageX = snap.x;
+ pageY = snap.y;
+
+ that.scrollTo(pageX, pageY, runtime || '500ms');
+ },
+
+ scrollToElement: function (el, runtime) {
+ el = typeof el == 'object' ? el : this.element.querySelector(el);
+
+ if (!el) {
+ return;
+ }
+
+ var that = this,
+ x = that.scrollX ? -el.offsetLeft : 0,
+ y = that.scrollY ? -el.offsetTop : 0;
+
+ if (x >= 0) {
+ x = 0;
+ } else if (x < that.maxScrollX) {
+ x = that.maxScrollX;
+ }
+
+ if (y >= 0) {
+ y = 0;
+ } else if (y < that.maxScrollY) {
+ y = that.maxScrollY;
+ }
+
+ that.scrollTo(x, y, runtime);
},
momentum: function (dist, time, maxDistUpper, maxDistLower) {
- var friction = 0.1,
- deceleration = 1.5,
+ var friction = 2.5,
+ deceleration = 1.2,
speed = Math.abs(dist) / time * 1000,
- newDist = speed * speed / (20 * friction) / 1000;
+ newDist = speed * speed / friction / 1000,
+ newTime = 0;
- // Proportinally reduce speed if we are outside of the boundaries
+ // Proportinally reduce speed if we are outside of the boundaries
if (dist > 0 && newDist > maxDistUpper) {
- speed = speed * maxDistUpper / newDist;
+ speed = speed * maxDistUpper / newDist / friction;
newDist = maxDistUpper;
- }
- if (dist < 0 && newDist > maxDistLower) {
- speed = speed * maxDistLower / newDist;
+ } else if (dist < 0 && newDist > maxDistLower) {
+ speed = speed * maxDistLower / newDist / friction;
newDist = maxDistLower;
}
-
+
newDist = newDist * (dist < 0 ? -1 : 1);
-
- var newTime = speed / deceleration;
+ newTime = speed / deceleration;
return { dist: Math.round(newDist), time: Math.round(newTime) };
+ },
+
+ onScrollEnd: function () {},
+
+ destroy: function (full) {
+ var that = this;
+
+ window.removeEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', that, false);
+ that.element.removeEventListener(START_EVENT, that, false);
+ that.element.removeEventListener(MOVE_EVENT, that, false);
+ that.element.removeEventListener(END_EVENT, that, false);
+ document.removeEventListener('webkitTransitionEnd', that, false);
+
+ if (that.options.checkDOMChanges) {
+ that.element.removeEventListener('DOMSubtreeModified', that, false);
+ }
+
+ if (that.scrollBarX) {
+ that.scrollBarX = that.scrollBarX.remove();
+ }
+
+ if (that.scrollBarY) {
+ that.scrollBarY = that.scrollBarY.remove();
+ }
+
+ if (full) {
+ that.wrapper.parentNode.removeChild(that.wrapper);
+ }
+
+ return null;
}
};
-var scrollbar = function (dir, wrapper) {
- this.dir = dir;
- this.bar = document.createElement('div');
- this.bar.className = 'scrollbar ' + dir;
- this.bar.style.webkitTransitionTimingFunction = 'cubic-bezier(0,0,0.25,1)';
- this.bar.style.webkitTransform = 'translate3d(0,0,0)';
- this.bar.style.webkitTransitionProperty = '-webkit-transform,opacity';
- this.bar.style.webkitTransitionDuration = '0,300ms';
- this.bar.style.pointerEvents = 'none';
- this.bar.style.opacity = '0';
-
- wrapper.appendChild(this.bar);
+function scrollbar (dir, wrapper, fade, shrink) {
+ var that = this, style;
+
+ that.dir = dir;
+ that.fade = fade;
+ that.shrink = shrink;
+ that.uid = ++uid;
+
+ // Create main scrollbar
+ that.bar = document.createElement('div');
+
+ style = 'position:absolute;top:0;left:0;-webkit-transition-timing-function:cubic-bezier(0,0,0.25,1);pointer-events:none;-webkit-transition-duration:0;-webkit-transition-delay:0;-webkit-transition-property:-webkit-transform;z-index:10;background:rgba(0,0,0,0.5);' +
+ '-webkit-transform:' + translateOpen + '0,0' + translateClose + ';' +
+ (dir == 'horizontal' ? '-webkit-border-radius:3px 2px;min-width:6px;min-height:5px' : '-webkit-border-radius:2px 3px;min-width:5px;min-height:6px');
+
+ that.bar.setAttribute('style', style);
+
+ // Create scrollbar wrapper
+ that.wrapper = document.createElement('div');
+ style = '-webkit-mask:-webkit-canvas(scrollbar' + that.uid + that.dir + ');position:absolute;z-index:10;pointer-events:none;overflow:hidden;opacity:0;-webkit-transition-duration:' + (fade ? '300ms' : '0') + ';-webkit-transition-delay:0;-webkit-transition-property:opacity;' +
+ (that.dir == 'horizontal' ? 'bottom:2px;left:2px;right:7px;height:5px' : 'top:2px;right:2px;bottom:7px;width:5px;');
+ that.wrapper.setAttribute('style', style);
+
+ // Add scrollbar to the DOM
+ that.wrapper.appendChild(that.bar);
+ wrapper.appendChild(that.wrapper);
}
scrollbar.prototype = {
- size: 0,
- maxSize: 0,
- maxScroll: 0,
- visible: false,
-
init: function (scroll, size) {
- var offset = this.dir == 'horizontal' ? this.bar.offsetWidth - this.bar.clientWidth : this.bar.offsetHeight - this.bar.clientHeight;
- this.maxSize = scroll - 8; // 8 = distance from top + distance from bottom
- this.size = Math.round(this.maxSize * this.maxSize / size) + offset;
- this.maxScroll = this.maxSize - this.size;
- this.bar.style[this.dir == 'horizontal' ? 'width' : 'height'] = (this.size - offset) + 'px';
+ var that = this,
+ ctx;
+
+ // Create scrollbar mask
+ if (that.dir == 'horizontal') {
+ if (that.maxSize != that.wrapper.offsetWidth) {
+ that.maxSize = that.wrapper.offsetWidth;
+ ctx = document.getCSSCanvasContext("2d", "scrollbar" + that.uid + that.dir, that.maxSize, 5);
+ ctx.fillStyle = "rgb(0,0,0)";
+ ctx.beginPath();
+ ctx.arc(2.5, 2.5, 2.5, Math.PI/2, -Math.PI/2, false);
+ ctx.lineTo(that.maxSize-2.5, 0);
+ ctx.arc(that.maxSize-2.5, 2.5, 2.5, -Math.PI/2, Math.PI/2, false);
+ ctx.closePath();
+ ctx.fill();
+ }
+ } else {
+ if (that.maxSize != that.wrapper.offsetHeight) {
+ that.maxSize = that.wrapper.offsetHeight;
+ ctx = document.getCSSCanvasContext("2d", "scrollbar" + that.uid + that.dir, 5, that.maxSize);
+ ctx.fillStyle = "rgb(0,0,0)";
+ ctx.beginPath();
+ ctx.arc(2.5, 2.5, 2.5, Math.PI, 0, false);
+ ctx.lineTo(5, that.maxSize-2.5);
+ ctx.arc(2.5, that.maxSize-2.5, 2.5, 0, Math.PI, false);
+ ctx.closePath();
+ ctx.fill();
+ }
+ }
+
+ that.size = Math.max(Math.round(that.maxSize * that.maxSize / size), 6);
+ that.maxScroll = that.maxSize - that.size;
+ that.toWrapperProp = that.maxScroll / (scroll - size);
+ that.bar.style[that.dir == 'horizontal' ? 'width' : 'height'] = that.size + 'px';
},
-
+
setPosition: function (pos) {
+ var that = this;
+
+ if (that.wrapper.style.opacity != '1') {
+ that.show();
+ }
+
+ pos = Math.round(that.toWrapperProp * pos);
+
if (pos < 0) {
- pos = 0;
- } else if (pos > this.maxScroll) {
- pos = this.maxScroll;
+ pos = that.shrink ? pos + pos*3 : 0;
+ if (that.size + pos < 7) {
+ pos = -that.size + 6;
+ }
+ } else if (pos > that.maxScroll) {
+ pos = that.shrink ? pos + (pos-that.maxScroll)*3 : that.maxScroll;
+ if (that.size + that.maxScroll - pos < 7) {
+ pos = that.size + that.maxScroll - 6;
+ }
}
- pos = this.dir == 'horizontal' ? 'translate3d(' + Math.round(pos) + 'px,0,0)' : 'translate3d(0,' + Math.round(pos) + 'px,0)';
- this.bar.style.webkitTransform = pos;
- },
-
- scrollTo: function (pos, runtime) {
- this.bar.style.webkitTransitionDuration = (runtime || '400ms') + ',300ms';
- this.setPosition(pos);
+ pos = that.dir == 'horizontal'
+ ? translateOpen + pos + 'px,0' + translateClose
+ : translateOpen + '0,' + pos + 'px' + translateClose;
+
+ that.bar.style.webkitTransform = pos;
},
-
+
show: function () {
- this.visible = true;
- this.bar.style.opacity = '1';
+ if (has3d) {
+ this.wrapper.style.webkitTransitionDelay = '0';
+ }
+ this.wrapper.style.opacity = '1';
},
hide: function () {
- this.visible = false;
- this.bar.style.opacity = '0';
+ if (has3d) {
+ this.wrapper.style.webkitTransitionDelay = '350ms';
+ }
+ this.wrapper.style.opacity = '0';
},
-
+
remove: function () {
- this.bar.parentNode.removeChild(this.bar);
+ this.wrapper.parentNode.removeChild(this.wrapper);
return null;
}
};
+// Is translate3d compatible?
+var has3d = ('WebKitCSSMatrix' in window && 'm11' in new WebKitCSSMatrix()),
+ // Device sniffing
+ isIphone = (/iphone/gi).test(navigator.appVersion),
+ isIpad = (/ipad/gi).test(navigator.appVersion),
+ isAndroid = (/android/gi).test(navigator.appVersion),
+ isTouch = isIphone || isIpad || isAndroid,
+ // Event sniffing
+ START_EVENT = isTouch ? 'touchstart' : 'mousedown',
+ MOVE_EVENT = isTouch ? 'touchmove' : 'mousemove',
+ END_EVENT = isTouch ? 'touchend' : 'mouseup',
+ // Translate3d helper
+ translateOpen = 'translate' + (has3d ? '3d(' : '('),
+ translateClose = has3d ? ',0)' : ')',
+ // Unique ID
+ uid = 0;
+
// Expose iScroll to the world
window.iScroll = iScroll;
})();
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