417 lines
No EOL
12 KiB
JavaScript
417 lines
No EOL
12 KiB
JavaScript
(function( $ ) {
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$.fn.hasScrollBar = function() {
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return this.get(0).scrollHeight > this.height();
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};
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$.fn.lionbars = function(options) {
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options = options || {};
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autohide = options.autohide;
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// Flags
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var timeout,
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HDragging=false,
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VDragging=false,
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activeScroll=0,
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activeWrap=0,
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eventX,
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eventY,
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mouseX,
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mouseY,
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currentRatio,
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initPos,
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scrollValue,
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hideTimeoutSet=false,
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vEventFired = false,
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hEventFired = false;
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// Initialization
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var elements = $(this),
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id = 0,
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vScrollWidth=0, hScrollWidth=0,
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addHScroll=false, addVScroll=false,
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paddingTop=0, paddingLeft=0, paddingBottom=0, paddingRight=0,
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borderTop=0, borderRight=0, borderBottom=0, borderLeft=0,
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scrollHeight=0, scrollWidth=0, offsetWidth=0, offsetHeight=0, clientWidth=0, clientHeight=0,
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vRatio=0, hRatio=0,
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vSliderHeight=0, hSliderHeight=0,
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vLbHeight=0, hLbHeight=0;
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// Main Loop
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mainLoop();
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function mainLoop() {
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for (var i=0; elements[i] !== undefined; i++) {
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if (needScrollbars(elements[i]) && !$(elements[i]).hasClass('nolionbars')) {
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// add the element to the main array
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target = elements[i];
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// get some values before the element is wrapped
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getDimentions(target);
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// wrap the element
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wrap(target, addVScroll, addHScroll);
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// hide the default scrollbar
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hideScrollbars(target, addVScroll, addHScroll);
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// Calculate the size of the scrollbars
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reduceScrollbarsWidthHeight(target);
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setSlidersHeight(target);
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// Set variables needed to calculate scroll speed, etc.
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setScrollRatios(target);
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// Set events
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setEvents(target);
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// prepare for next element
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resetVars();
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}
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}
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}
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// Set document events
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$(document).mousemove(function(e) {
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if (VDragging) {
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mouseY = e.pageY;
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activeWrap.scrollTop((initPos + mouseY - eventY) * Math.abs(currentRatio));
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}
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if (HDragging) {
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mouseX = e.pageX;
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activeWrap.scrollLeft((initPos + mouseX - eventX) * Math.abs(currentRatio));
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}
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});
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$(document).mouseup(function(e) {
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if (VDragging) {
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VDragging = false;
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}
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if (HDragging) {
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HDragging = false;
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}
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});
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// Core functions
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function setEvents(elem) {
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var el = $(elem);
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if (addVScroll || addHScroll) {
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el.find('.lb-wrap').scroll(function(e) {
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el.find('.lb-v-scrollbar-slider').css({ "top" : -$(this).scrollTop()/el.attr('vratio') });
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el.find('.lb-h-scrollbar-slider').css({ "left" : -$(this).scrollLeft()/el.attr('hratio') });
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if (el.find('.lb-v-scrollbar').height() == (parseInt(el.find('.lb-v-scrollbar-slider').css('top')) + el.find('.lb-v-scrollbar-slider').height())
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&& typeof(options.reachedBottom) == 'function'
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&& !vEventFired
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) {
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vEventFired = true;
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var self = $(this);
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options.reachedBottom.apply($(this).children('.lb-content'), [function () {
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getDimentions($(self).parent(), {
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height: $(self).children('.lb-content').get(0).scrollHeight,
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width: $(self).children('.lb-content').get(0).scrollWidth
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});
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// Calculate the size of the scrollbars
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reduceScrollbarsWidthHeight($(self).parent());
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setSlidersHeight($(self).parent());
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// Set variables needed to calculate scroll speed, etc.
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setScrollRatios($(self).parent());
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// prepare for next element
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resetVars();
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vEventFired = false;
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}]);
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}
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if (el.find('.lb-h-scrollbar').width() == (parseInt(el.find('.lb-h-scrollbar-slider').css('left')) + el.find('.lb-h-scrollbar-slider').width())
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&& typeof(options.reachedRight) == 'function'
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&& !hEventFired
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) {
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hEventFired = true;
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var self = $(this);
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options.reachedRight.apply($(this).children('.lb-content'), [function () {
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getDimentions($(self).parent(), {
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height: $(self).children('.lb-content').get(0).scrollHeight,
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width: $(self).children('.lb-content').get(0).scrollWidth
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});
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// Calculate the size of the scrollbars
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reduceScrollbarsWidthHeight($(self).parent());
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setSlidersHeight($(self).parent());
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// Set variables needed to calculate scroll speed, etc.
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setScrollRatios($(self).parent());
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// prepare for next element
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resetVars();
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hEventFired = false;
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}]);
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}
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}).on('mouseenter',function(){ if (autohide) {
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el.find('.lb-v-scrollbar, .lb-h-scrollbar').fadeIn(150);
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clearTimeout(timeout);
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timeout = setTimeout(function() {
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el.find('.lb-v-scrollbar, .lb-h-scrollbar').fadeOut(150);
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}, 2000);
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}});
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}
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if (addVScroll) {
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el.find('.lb-v-scrollbar-slider').mousedown(function(e) {
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eventY = e.pageY;
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VDragging = true;
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activeScroll = $(this);
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activeWrap = el.find('.lb-wrap');
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currentRatio = activeWrap.parent().attr('vratio');
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initPos = activeScroll.position().top;
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return false;
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});
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el.find('.lb-v-scrollbar').mousedown(function(e) {
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if (!$(e.target).hasClass('lb-v-scrollbar-slider')) {
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el.find('.lb-wrap').scrollTop((e.pageY - $(this).offset().top) * Math.abs(el.attr('vratio')) - $(this).find('.lb-v-scrollbar-slider').height()/2);
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}
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return false;
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});
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}
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if (addHScroll) {
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el.find('.lb-h-scrollbar-slider').mousedown(function(e) {
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eventX = e.pageX;
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HDragging = true;
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activeScroll = $(this);
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activeWrap = el.find('.lb-wrap');
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currentRatio = activeWrap.parent().attr('hratio');
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initPos = activeScroll.position().left;
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return false;
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});
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el.find('.lb-h-scrollbar').mousedown(function(e) {
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if (!$(e.target).hasClass('lb-h-scrollbar-slider')) {
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el.find('.lb-wrap').scrollLeft((e.pageX - $(this).offset().left) * Math.abs(el.attr('hratio')) - $(this).find('.lb-h-scrollbar-slider').width()/2);
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}
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return false;
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});
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}
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if ((addVScroll || addHScroll) && autohide) {
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el.find('.lb-v-scrollbar, .lb-h-scrollbar').hide();
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el.hover(function() {
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}, function() {
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el.find('.lb-v-scrollbar, .lb-h-scrollbar').fadeOut(150);
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});
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}
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}
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function setScrollRatios(elem) {
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vRatio = (offsetHeight - $(elem).find('.lb-wrap').get(0).scrollHeight - borderTop - borderBottom)/(vLbHeight - vSliderHeight);
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hRatio = (offsetWidth - $(elem).find('.lb-wrap').get(0).scrollWidth - borderLeft - borderRight)/(hLbHeight - hSliderHeight);
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var el = $(elem);
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el.attr('vratio', vRatio);
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el.attr('hratio', hRatio);
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}
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function setSlidersHeight(elem) {
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var el = $(elem);
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var hmin, hmax, gap;
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if (el.find('.lb-v-scrollbar').length != 0) {
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hmin = 20;
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gap = offsetHeight - el.find('.lb-v-scrollbar').height();
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hmax = offsetHeight - gap - hmin;
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vSliderHeight = Math.round((offsetHeight*hmax)/scrollHeight);
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vSliderHeight = (vSliderHeight < hmin) ? hmin : vSliderHeight;
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}
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if (el.find('.lb-h-scrollbar').length != 0) {
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hmin = 20;
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gap = offsetWidth - el.find('.lb-h-scrollbar').width();
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hmax = offsetWidth - gap - hmin;
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hSliderHeight = Math.round((offsetWidth*hmax)/scrollWidth);
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hSliderHeight = (hSliderHeight < hmin) ? hmin : hSliderHeight;
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}
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el.find('.lb-v-scrollbar-slider').css({ "height" : vSliderHeight });
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el.find('.lb-h-scrollbar-slider').css({ "width" : hSliderHeight });
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}
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function resetVars() {
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vScrollWidth = 0;
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hScrollWidth = 0;
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addHScroll=false;
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addVScroll=false;
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paddingTop = 0;
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paddingLeft = 0;
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paddingBottom = 0;
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paddingRight = 0;
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borderTop = 0;
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borderLeft = 0;
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borderBottom = 0;
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borderRight = 0;
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scrollHeight = 0;
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scrollWidth = 0;
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offsetWidth = 0;
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offsetHeight = 0;
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clientWidth = 0;
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clientHeight = 0;
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// vRatio = 0;
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// hRatio = 0;
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vSliderHeight = 0;
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hSliderHeight = 0;
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vLbHeight = 0;
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hLbHeight = 0;
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}
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function reduceScrollbarsWidthHeight(elem) {
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var el = $(elem);
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if (addVScroll && addHScroll) {
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vLbHeight = el.height()-12;
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hLbHeight = el.width()-12;
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el.find('.lb-v-scrollbar').css({ "height" : vLbHeight });
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el.find('.lb-h-scrollbar').css({ "width" : hLbHeight });
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} else {
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vLbHeight = el.height()-4;
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hLbHeight = el.width()-4;
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el.find('.lb-v-scrollbar').css({ "height" : vLbHeight });
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el.find('.lb-h-scrollbar').css({ "width" : hLbHeight });
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}
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}
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function hideScrollbars(elem, vscroll, hscroll) {
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var el = $(elem);
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if (vscroll || hscroll) {
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el.css({ "overflow" : 'hidden' });
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movePadding(el, el.find('.lb-wrap'));
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resizeMainBox(el);
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resizeInnerWrap(el, el.find('.lb-wrap'));
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}
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}
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function resizeMainBox(elem) {
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var el = $(elem);
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el.css({ "width" : el.width() + paddingLeft + paddingRight, "height" : el.height() + paddingTop + paddingBottom });
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}
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function movePadding(from, to) {
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var fromEl = $(from);
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var toEl = $(to);
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fromEl.css({ "padding" : 0 });
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toEl.css({
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"padding-top" : paddingTop+'px',
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"padding-left" : paddingLeft+'px',
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"padding-bottom" : paddingBottom+'px',
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"padding-right" : paddingRight+'px'
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});
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}
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function resizeInnerWrap(main, child) {
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var mainEl = $(main);
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var childEl = $(child);
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mainEl.css({ "position" : 'relative' });
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childEl.css({
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"width" : mainEl.width()+vScrollWidth - paddingLeft - paddingRight,
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"height" : mainEl.height()+hScrollWidth - paddingTop - paddingBottom
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});
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}
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function setVScrollbarWidth(elem) {
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var el = $(elem);
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el.css({ "overflow" : 'auto' });
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vScrollWidth = offsetWidth - clientWidth - borderLeft - borderRight;
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el.css({ "overflow" : 'hidden' });
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}
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function setHScrollbarWidth(elem) {
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var el = $(elem);
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el.css({ "overflow" : 'auto' });
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hScrollWidth = offsetHeight - clientHeight - borderTop - borderBottom;
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el.css({ "overflow" : 'hidden' });
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}
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function wrap(elem, vscroll, hscroll) {
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var el = $(elem);
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var elemId = el.attr('id');
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var wrap = 0;
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if (elemId !== undefined) {
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el.wrapInner('<div class="lb-wrap" id="lb-wrap-'+id+'-'+elemId+'"></div>');
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wrap = $('#lb-wrap-'+id+'-'+elemId);
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} else {
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el.wrapInner('<div class="lb-wrap" id="lb-wrap-'+id+'"></div>');
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wrap = $('#lb-wrap-'+id);
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}
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wrap.wrapInner('<div class="lb-content"></div>');
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if (vscroll) {
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el.prepend('<div class="lb-v-scrollbar"></div>');
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el.find('.lb-v-scrollbar').append('<div class="lb-v-scrollbar-slider"></div>');
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}
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if (hscroll) {
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el.prepend('<div class="lb-h-scrollbar"></div>');
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el.find('.lb-h-scrollbar').append('<div class="lb-h-scrollbar-slider"></div>');
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}
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// preparation for the next element
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id = id + 1;
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}
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function needScrollbars(elem) {
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var el = $(elem);
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addVScroll = false;
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addHScroll = false;
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getPadding(el);
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getBorders(el);
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el.css({ "overflow" : 'hidden' });
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// check for vertical scrollbars
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if (el.get(0).scrollHeight > el.get(0).clientHeight) {
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addVScroll = true;
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// setVScrollbarWidth(el);
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}
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// check for horizontal scrollbars
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if (el.get(0).scrollWidth > el.get(0).clientWidth) {
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addHScroll = true;
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// setHScrollbarWidth(el);
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}
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el.css({ "overflow" : 'auto' });
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if (addVScroll || addHScroll) {
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return true;
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}
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}
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function getPadding(elem) {
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var el = $(elem);
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paddingTop = parseInt(el.css('padding-top').replace('px', ''));
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paddingLeft = parseInt(el.css('padding-left').replace('px', ''));
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paddingBottom = parseInt(el.css('padding-bottom').replace('px', ''));
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paddingRight = parseInt(el.css('padding-right').replace('px', ''));
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}
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function getBorders(elem) {
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var el = $(elem);
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borderTop = parseInt(el.css('border-top-width').replace('px', ''));
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borderRight = parseInt(el.css('border-right-width').replace('px', ''));
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borderBottom = parseInt(el.css('border-bottom-width').replace('px', ''));
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borderLeft = parseInt(el.css('border-left-width').replace('px', ''));
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}
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function getDimentions(elem, scroll) {
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var el = $(elem).get(0);
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scrollHeight = (typeof(scroll) != 'undefined') ? scroll.height : el.scrollHeight;
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scrollWidth = (typeof(scroll) != 'undefined') ? scroll.width : el.scrollWidth;
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clientHeight = el.clientHeight;
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clientWidth = el.clientWidth;
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offsetHeight = el.offsetHeight;
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offsetWidth = el.offsetWidth;
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setVScrollbarWidth($(elem));
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setHScrollbarWidth($(elem));
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}
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return this.each(function() {
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//var $this = $(this);
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});
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};
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})( jQuery ); |