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jquery.bt.js
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/*
* jQuery BeautyTips
*
* Copyright (c) 2013 Julien Maurel
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
* Project home:
* https://github.com/julien-maurel/jQuery-BeautyTips
*
* Version: 1.0.0
*
* This plugin is a fork with some improvement/options of Jeff Robbins's plugin (Lullabot - http://www.lullabot.com - http://dillon-sellars.github.io/BeautyTips/).
*/
jQuery.bt = {version: '1.0.0'};
(function($) {
jQuery.fn.bt = function(content, options) {
if (typeof content != 'string') {
var contentSelect = true;
options = content;
content = false;
} else {
var contentSelect = false;
}
// if hoverIntent is installed, use that as default instead of hover
if (jQuery.fn.hoverIntent && jQuery.bt.defaults.trigger == 'hover') {
jQuery.bt.defaults.trigger = 'hoverIntent';
}
return this.each(function(index) {
var opts = jQuery.extend(false, jQuery.bt.defaults, jQuery.bt.options, options);
var target=this;
// clean up the options
opts.spikeLength = numb(opts.spikeLength);
opts.spikeGirth = numb(opts.spikeGirth);
opts.overlap = numb(opts.overlap);
var ajaxTimeout = false;
if (opts.killTitle) {
$(this).find('[title]').andSelf().each(function() {
if (!$(this).attr('bt-xTitle')) {
$(this).attr('bt-xTitle', $(this).attr('title')).attr('title', '');
}
});
}
if (typeof opts.trigger == 'string') {
opts.trigger = [opts.trigger];
}
if(!(opts.trigger.length > 1)){
if (opts.trigger[0] == 'hoverIntent') {
var hoverOpts = jQuery.extend(opts.hoverIntentOpts, {
over: function() {
this.btOn();
},
out: function() {
this.btOff();
}});
$(this).hoverIntent(hoverOpts);
} else if (opts.trigger[0] == 'hover') {
$(this).hover(
function() {
this.btOn();
},
function() {
this.btOff();
}
);
} else if (opts.trigger[0] == 'now') {
if ($(this).hasClass('bt-active')) {
this.btOff();
} else {
this.btOn();
}
} else if (opts.trigger[0] == 'none') {
// initialize the tip with no event trigger use javascript to turn on/off tip as follows:
// $('#selector').btOn();
// $('#selector').btOff();
}
} else if (opts.trigger[0] != opts.trigger[1]) {
$(this)
.bind(opts.trigger[0], function() {
this.btOn();
})
.bind(opts.trigger[1], function() {
this.btOff();
});
} else {
// toggle using the same event
$(this).bind(opts.trigger[0], function() {
if ($(this).hasClass('bt-active')) {
this.btOff();
} else {
this.btOn();
}
});
}
/**
* The BIG TURN ON
* Any element that has been initiated
*/
this.btOn = function (refreshBoxOnly) {
var self=this;
if(!refreshBoxOnly){
if (typeof $(this).data('bt-box') == 'object') {
if(opts.trigger[1]=='outbox'){
return;
}
// if there's already a popup, remove it before creating a new one.
this.btOff();
}
// trigger preBuild function
opts.preBuild.apply(this);
// turn off other tips
$(jQuery.bt.vars.closeWhenOpenStack).btOff();
$(this).addClass('bt-active ' + opts.activeClass);
if (contentSelect && opts.ajaxPath == null) {
// bizarre, I know
if (opts.killTitle) {
// if we've killed the title attribute, it's been stored in 'bt-xTitle' so get it..
$(this).attr('title', $(this).attr('bt-xTitle'));
}
// then evaluate the selector... title is now in place
content = $.isFunction(opts.contentSelector) ? opts.contentSelector.apply(this) : eval(opts.contentSelector);
if (opts.killTitle) {
// now remove the title again, so we don't get double tips
$(this).attr('title', '');
}
}
// ----------------------------------------------
// All the Ajax(ish) stuff is in this next bit...
// ----------------------------------------------
if (opts.ajaxPath != null && content == false) {
if (typeof opts.ajaxPath == 'object') {
var url = eval(opts.ajaxPath[0]);
url += opts.ajaxPath[1] ? ' ' + opts.ajaxPath[1] : '';
} else {
var url = opts.ajaxPath;
}
var off = url.indexOf(" ");
if ( off >= 0 ) {
var selector = url.slice(off, url.length);
url = url.slice(0, off);
}
// load any data cached for the given ajax path
var cacheData = opts.ajaxCache ? $(document.body).data('btCache-' + url.replace(/\./g, '')) : null;
if (typeof cacheData == 'string') {
content = selector ? $("<div/>").append(cacheData.replace(/<script(.|\s)*?\/script>/g, "")).find(selector) : cacheData;
} else {
// set up the options
var ajaxOpts = jQuery.extend(false, {
type: opts.ajaxType,
data: opts.ajaxData,
cache: opts.ajaxCache,
url: url,
complete: function(XMLHttpRequest, textStatus) {
if (textStatus == 'success' || textStatus == 'notmodified') {
if (opts.ajaxCache) {
$(document.body).data('btCache-' + url.replace(/\./g, ''), XMLHttpRequest.responseText);
}
ajaxTimeout = false;
content = selector ?
// if selector, create a dummy div to hold the results and inject the contents of the document in, removing the scripts to avoid any 'Permission Denied' errors in IE
$("<div/>").append(XMLHttpRequest.responseText.replace(/<script(.|\s)*?\/script>/g, "")).find(selector) :
// If not, just inject the full result
XMLHttpRequest.responseText;
} else {
// if there was a timeout, we don't cache the result
if (textStatus == 'timeout') {
ajaxTimeout = true;
}
content = opts.ajaxError.replace(/%error/g, XMLHttpRequest.statusText);
}
// if the user rolls out of the target element before the ajax request comes back, don't show it
if ($(target).hasClass('bt-active')) {
target.btOn();
}
}
}, opts.ajaxOpts);
// do the ajax request
jQuery.ajax(ajaxOpts);
// load the throbber while the magic happens
content = opts.ajaxLoading;
}
}
}
// figure out how to compensate for the shadow, if present
var shadowMarginX = 0; // extra added to width to compensate for shadow
var shadowMarginY = 0; // extra added to height
var shadowShiftX = 0; // amount to shift the tip horizontally to allow for shadow
var shadowShiftY = 0; // amount to shift vertical
if (opts.shadow && !shadowSupport()) {
// if browser doesn't support drop shadows, turn them off
opts.shadow = false;
// and bring in the noShadows options
jQuery.extend(opts, opts.noShadowOpts);
}
if (opts.shadow) {
// figure out horizontal placement
if (opts.shadowBlur > Math.abs(opts.shadowOffsetX)) {
shadowMarginX = opts.shadowBlur * 2;
} else {
shadowMarginX = opts.shadowBlur + Math.abs(opts.shadowOffsetX);
}
shadowShiftX = (opts.shadowBlur - opts.shadowOffsetX) > 0 ? opts.shadowBlur - opts.shadowOffsetX : 0;
// now vertical
if (opts.shadowBlur > Math.abs(opts.shadowOffsetY)) {
shadowMarginY = opts.shadowBlur * 2;
} else {
shadowMarginY = opts.shadowBlur + Math.abs(opts.shadowOffsetY);
}
shadowShiftY = (opts.shadowBlur - opts.shadowOffsetY) > 0 ? opts.shadowBlur - opts.shadowOffsetY : 0;
}
if (opts.offsetParent){
// if offsetParent is defined by user
var offsetParent = $(opts.offsetParent);
var offsetParentPos = offsetParent.offset();
var pos = $(this).offset();
// IE can return 'auto' for margins
var top = numb(pos.top) - numb(offsetParentPos.top) + numb($(this).css('margin-top')) - shadowShiftY;
var left = numb(pos.left) - numb(offsetParentPos.left) + numb($(this).css('margin-left')) - shadowShiftX;
} else {
// if the target element is absolutely positioned, use its parent's offsetParent instead of its own
var offsetParent = ($(this).css('position') == 'absolute') ? $(this).parents().eq(0).offsetParent() : $(this).offsetParent();
var pos = $(this).position();
// IE can return 'auto' for margins
var top = numb(pos.top) + numb($(this).css('margin-top')) - shadowShiftY;
var left = numb(pos.left) + numb($(this).css('margin-left')) - shadowShiftX;
}
var width = $(this).outerWidth();
var height = $(this).outerHeight();
if(!refreshBoxOnly){
if (typeof content == 'object') {
// if content is a DOM object (as opposed to text)
// use a clone, rather than removing the original element
// and ensure that it's visible
var original = content;
var clone = $(original).clone(true).show();
// also store a reference to the original object in the clone data
// and a reference to the clone in the original
var origClones = $(original).data('bt-clones') || [];
origClones.push(clone);
$(original).data('bt-clones', origClones);
$(clone).data('bt-orig', original);
$(this).data('bt-content-orig', {original: original, clone: clone});
content = clone;
}
if (typeof content == 'null' || content == '') {
// if content is empty, bail out...
return;
}
// create the tip content div, populate it, and style it
var $text = $('<div class="bt-content"></div>').css({padding: opts.padding, position: 'absolute', width: (opts.shrinkToFit ? 'auto' : opts.width), zIndex: opts.textzIndex, left: shadowShiftX, top: shadowShiftY}).css(opts.cssStyles);
// create the wrapping box which contains text and canvas
// put the content in it, style it, and append it to the same offset parent as the target
var $box = $('<div class="bt-wrapper"></div>').append($text).addClass(opts.cssClass).css({position: 'absolute', width: opts.width, zIndex: opts.wrapperzIndex, visibility:'hidden'}).appendTo(offsetParent);
$text.append(content);
var imgsl=0;
var imgs=$text.find('img').hide();
imgs.load(function(){
$(this).show();
target.btOn(true);
imgsl++;
// Set content to false only when last image is loaded, else target.btOn() reload content instead of refresh box
if(imgsl==imgs.length) content=false;
});
// Add a close button
if(opts.closeButton){
jQuery('<div class="bt-close"> </div>').click(function(){
self.btOff();
}).prependTo($box.find('div.bt-content:first'));
}
// use bgiframe to get around z-index problems in IE6
// http://plugins.jquery.com/project/bgiframe
if (jQuery.fn.bgiframe) {
$text.bgiframe();
$box.bgiframe();
}
$(this).data('bt-box', $box);
}else{
$box=$(this).data('bt-box');
$text=$box.find('.bt-content');
}
// see if the text box will fit in the various positions
var scrollTop = numb($(document).scrollTop());
var scrollLeft = numb($(document).scrollLeft());
var docWidth = numb($(window).width());
var docHeight = numb($(window).height());
var winRight = scrollLeft + docWidth;
var winBottom = scrollTop + docHeight;
var space = new Object();
var thisOffset = $(this).offset();
space.top = thisOffset.top - scrollTop;
space.bottom = docHeight - ((thisOffset + height) - scrollTop);
space.left = thisOffset.left - scrollLeft;
space.right = docWidth - ((thisOffset.left + width) - scrollLeft);
var textOutHeight = numb($text.outerHeight());
var textOutWidth = numb($text.outerWidth());
if (opts.positions.constructor == String) {
opts.positions = opts.positions.replace(/ /, '').split(',');
}
if (opts.positions[0] == 'most') {
// figure out which is the largest
var position = 'top'; // prime the pump
for (var pig in space) { // <------- pigs in space!
position = space[pig] > space[position] ? pig : position;
}
} else {
for (var x in opts.positions) {
var position = opts.positions[x];
// @todo: acommodate shadow space in the following lines...
if ((position == 'left' || position == 'right') && space[position] > textOutWidth + opts.spikeLength) {
break;
} else if ((position == 'top' || position == 'bottom') && space[position] > textOutHeight + opts.spikeLength) {
break;
}
}
}
// horizontal (left) offset for the box
var horiz = left + interpretPosition(opts.targetAlign,width,0,0,0) - interpretPosition(opts.align,textOutWidth,0,0,0);
var horizCenter=(left + width * 0.5 - textOutWidth * 0.5);
// vertical (top) offset for the box
var vert = top + interpretPosition(opts.targetAlign,0,height,0,0) - interpretPosition(opts.align,0,textOutHeight,0,0);
var vertCenter=(top + height * 0.5 - textOutHeight * 0.5);
var points = new Array();
var textTop, textLeft, textRight, textBottom, textTopSpace, textBottomSpace, textLeftSpace, textRightSpace, crossPoint, textCenter, spikePoint;
// Yes, yes, this next bit really could use to be condensed
// each switch case is basically doing the same thing in slightly different ways
switch(position) {
// =================== TOP =======================
case 'top':
// spike on bottom
$text.css('margin-bottom', opts.spikeLength + 'px');
$box.css({top: (top - $text.outerHeight(true)) + opts.overlap + opts.constantOverlap[1], left: horiz + opts.constantOverlap[0]});
// move text left/right if extends out of window
var xShift = 0;
if(opts.windowCheck){
textRightSpace = (winRight - opts.windowMargin) - ($text.offset().left + $text.outerWidth(true));
if (textRightSpace < 0) {
// shift it left
$box.css('left', (numb($box.css('left')) + textRightSpace) + 'px');
xShift -= textRightSpace;
}
// we test left space second to ensure that left of box is visible
textLeftSpace = ($text.offset().left + numb($text.css('margin-left'))) - (scrollLeft + opts.windowMargin);
if (textLeftSpace < 0) {
// shift it right
$box.css('left', (numb($box.css('left')) - textLeftSpace) + 'px');
xShift += textLeftSpace;
}
}
textTop = $text.position().top + numb($text.css('margin-top'));
textLeft = $text.position().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + interpretPosition(opts.centerPointX,textRight-textLeft,0,0,textLeft), y: textTop + interpretPosition(opts.centerPointY,0,textBottom-textTop,textTop,0)};
xShift += shadowShiftX + (horizCenter - horiz) + (interpretPosition(opts.targetCenterPointX,width,0,0,0) - 0.5 * width);
points[points.length] = spikePoint = {x: ((textRight-textLeft) * .5) + xShift, y: textBottom + opts.spikeLength, type: 'spike'};
var overlap=interpretPosition(opts.spikeOverlapX,textRight-textLeft,0,0,-spikePoint.x);
crossPoint = findIntersectX(spikePoint.x, spikePoint.y, textCenter.x, textCenter.y, textBottom);
// make sure that the crossPoint is not outside of text box boundaries
crossPoint.x += overlap;
crossPoint.x = crossPoint.x < textLeft + opts.spikeGirth/2 + opts.cornerRadius ? textLeft + opts.spikeGirth/2 + opts.cornerRadius : crossPoint.x;
crossPoint.x = crossPoint.x > (textRight - opts.spikeGirth/2) - opts.cornerRadius ? (textRight - opts.spikeGirth/2) - opts.CornerRadius : crossPoint.x;
points[points.length] = {x: crossPoint.x - (opts.spikeGirth/2), y: textBottom, type: 'join'};
points[points.length] = {x: textLeft, y: textBottom, type: 'corner'}; // left bottom corner
points[points.length] = {x: textLeft, y: textTop, type: 'corner'}; // left top corner
points[points.length] = {x: textRight, y: textTop, type: 'corner'}; // right top corner
points[points.length] = {x: textRight, y: textBottom, type: 'corner'}; // right bottom corner
points[points.length] = {x: crossPoint.x + (opts.spikeGirth/2), y: textBottom, type: 'join'};
points[points.length] = spikePoint;
points[0].x+=overlap;
break;
// =================== LEFT =======================
case 'left':
// spike on right
$text.css('margin-right', opts.spikeLength + 'px');
$box.css({top: (vert + opts.constantOverlap[1]) + 'px', left: ((left - $text.outerWidth(true)) + opts.overlap + opts.constantOverlap[0]) + 'px'});
// move text up/down if extends out of window
var yShift = 0;
if(opts.windowCheck){
textBottomSpace = (winBottom - opts.windowMargin) - ($text.offset().top + $text.outerHeight(true));
if (textBottomSpace < 0) {
// shift it up
$box.css('top', (numb($box.css('top')) + textBottomSpace) + 'px');
yShift -= textBottomSpace;
}
// we ensure top space second to ensure that top of box is visible
textTopSpace = ($text.offset().top + numb($text.css('margin-top'))) - (scrollTop + opts.windowMargin);
if (textTopSpace < 0) {
// shift it down
$box.css('top', (numb($box.css('top')) - textTopSpace) + 'px');
yShift += textTopSpace;
}
}
textTop = $text.position().top + numb($text.css('margin-top'));
textLeft = $text.position().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + interpretPosition(opts.centerPointX,textRight-textLeft,0,0,textLeft), y: textTop + interpretPosition(opts.centerPointY,0,textBottom-textTop,textTop,0)};
yShift += shadowShiftY + (vertCenter - vert) + (interpretPosition(opts.targetCenterPointY,0,height,0,0) - 0.5 * height);
points[points.length] = spikePoint = {x: textRight + opts.spikeLength, y: ((textBottom-textTop) * .5) + yShift, type: 'spike'};
var overlap=interpretPosition(opts.spikeOverlapY,0,textBottom-textTop,-spikePoint.y,0);
crossPoint = findIntersectY(spikePoint.x, spikePoint.y, textCenter.x, textCenter.y, textRight);
// make sure that the crossPoint is not outside of text box boundaries
crossPoint.y += overlap;
crossPoint.y = crossPoint.y < textTop + opts.spikeGirth/2 + opts.cornerRadius ? textTop + opts.spikeGirth/2 + opts.cornerRadius : crossPoint.y;
crossPoint.y = crossPoint.y > (textBottom - opts.spikeGirth/2) - opts.cornerRadius ? (textBottom - opts.spikeGirth/2) - opts.cornerRadius : crossPoint.y;
points[points.length] = {x: textRight, y: crossPoint.y + opts.spikeGirth/2, type: 'join'};
points[points.length] = {x: textRight, y: textBottom, type: 'corner'}; // right bottom corner
points[points.length] = {x: textLeft, y: textBottom, type: 'corner'}; // left bottom corner
points[points.length] = {x: textLeft, y: textTop, type: 'corner'}; // left top corner
points[points.length] = {x: textRight, y: textTop, type: 'corner'}; // right top corner
points[points.length] = {x: textRight, y: crossPoint.y - opts.spikeGirth/2, type: 'join'};
points[points.length] = spikePoint;
points[0].y+=overlap;
break;
// =================== BOTTOM =======================
case 'bottom':
// spike on top
$text.css('margin-top', opts.spikeLength + 'px');
$box.css({top: (top + height) - opts.overlap - opts.constantOverlap[1], left: horiz + opts.constantOverlap[0]});
// move text up/down if extends out of window
var xShift = 0;
if(opts.windowCheck){
textRightSpace = (winRight - opts.windowMargin) - ($text.offset().left + $text.outerWidth(true));
if (textRightSpace < 0) {
// shift it left
$box.css('left', (numb($box.css('left')) + textRightSpace) + 'px');
xShift -= textRightSpace;
}
// we ensure left space second to ensure that left of box is visible
textLeftSpace = ($text.offset().left + numb($text.css('margin-left'))) - (scrollLeft + opts.windowMargin);
if (textLeftSpace < 0) {
// shift it right
$box.css('left', (numb($box.css('left')) - textLeftSpace) + 'px');
xShift += textLeftSpace;
}
}
textTop = $text.position().top + numb($text.css('margin-top'));
textLeft = $text.position().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + interpretPosition(opts.centerPointX,textRight-textLeft,0,0,textLeft), y: textTop + interpretPosition(opts.centerPointY,0,textBottom-textTop,textTop,0)};
xShift += shadowShiftX + (horizCenter - horiz) + (interpretPosition(opts.targetCenterPointX,width,0,0,0) - 0.5 * width);
points[points.length] = spikePoint = {x: ((textRight-textLeft) * .5) + xShift, y: shadowShiftY, type: 'spike'};
var overlap=interpretPosition(opts.spikeOverlapX,textRight-textLeft,0,0,-spikePoint.x);
crossPoint = findIntersectX(spikePoint.x, spikePoint.y, textCenter.x, textCenter.y, textTop);
// make sure that the crossPoint is not outside of text box boundaries
crossPoint.x += overlap;
crossPoint.x = crossPoint.x < textLeft + opts.spikeGirth/2 + opts.cornerRadius ? textLeft + opts.spikeGirth/2 + opts.cornerRadius : crossPoint.x;
crossPoint.x = crossPoint.x > (textRight - opts.spikeGirth/2) - opts.cornerRadius ? (textRight - opts.spikeGirth/2) - opts.cornerRadius : crossPoint.x;
points[points.length] = {x: crossPoint.x + opts.spikeGirth/2, y: textTop, type: 'join'};
points[points.length] = {x: textRight, y: textTop, type: 'corner'}; // right top corner
points[points.length] = {x: textRight, y: textBottom, type: 'corner'}; // right bottom corner
points[points.length] = {x: textLeft, y: textBottom, type: 'corner'}; // left bottom corner
points[points.length] = {x: textLeft, y: textTop, type: 'corner'}; // left top corner
points[points.length] = {x: crossPoint.x - (opts.spikeGirth/2), y: textTop, type: 'join'};
points[points.length] = spikePoint;
points[0].x+=overlap;
break;
// =================== RIGHT =======================
case 'right':
// spike on left
$text.css('margin-left', (opts.spikeLength + 'px'));
$box.css({top: (vert + opts.constantOverlap[1]) + 'px', left: ((left + width) - opts.overlap - opts.constantOverlap[0]) + 'px'});
// move text up/down if extends out of window
var yShift = 0;
if(opts.windowCheck){
textBottomSpace = (winBottom - opts.windowMargin) - ($text.offset().top + $text.outerHeight(true));
if (textBottomSpace < 0) {
// shift it up
$box.css('top', (numb($box.css('top')) + textBottomSpace) + 'px');
yShift -= textBottomSpace;
}
// we ensure top space second to ensure that top of box is visible
textTopSpace = ($text.offset().top + numb($text.css('margin-top'))) - (scrollTop + opts.windowMargin);
if (textTopSpace < 0) {
// shift it down
$box.css('top', (numb($box.css('top')) - textTopSpace) + 'px');
yShift += textTopSpace;
}
}
textTop = $text.position().top + numb($text.css('margin-top'));
textLeft = $text.position().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + interpretPosition(opts.centerPointX,textRight-textLeft,0,0,textLeft), y: textTop + interpretPosition(opts.centerPointY,0,textBottom-textTop,textTop,0)};
yShift += shadowShiftY + (vertCenter - vert) + (interpretPosition(opts.targetCenterPointY,0,height,0,0) - 0.5 * height);
points[points.length] = spikePoint = {x: shadowShiftX, y: ((textBottom-textTop) * .5) + yShift, type: 'spike'};
var overlap=interpretPosition(opts.spikeOverlapY,0,textBottom-textTop,-spikePoint.y,0);
crossPoint = findIntersectY(spikePoint.x, spikePoint.y, textCenter.x, textCenter.y, textLeft);
// make sure that the crossPoint is not outside of text box boundaries
crossPoint.y += overlap;
crossPoint.y = crossPoint.y < textTop + opts.spikeGirth/2 + opts.cornerRadius ? textTop + opts.spikeGirth/2 + opts.cornerRadius : crossPoint.y;
crossPoint.y = crossPoint.y > (textBottom - opts.spikeGirth/2) - opts.cornerRadius ? (textBottom - opts.spikeGirth/2) - opts.cornerRadius : crossPoint.y;
points[points.length] = {x: textLeft, y: crossPoint.y - opts.spikeGirth/2, type: 'join'};
points[points.length] = {x: textLeft, y: textTop, type: 'corner'}; // left top corner
points[points.length] = {x: textRight, y: textTop, type: 'corner'}; // right top corner
points[points.length] = {x: textRight, y: textBottom, type: 'corner'}; // right bottom corner
points[points.length] = {x: textLeft, y: textBottom, type: 'corner'}; // left bottom corner
points[points.length] = {x: textLeft, y: crossPoint.y + opts.spikeGirth/2, type: 'join'};
points[points.length] = spikePoint;
points[0].y+=overlap;
break;
}
$box.find('canvas').remove();
var canvas = document.createElement('canvas');
$(canvas).attr('width', (numb($text.outerWidth(true)) + opts.strokeWidth*2 + shadowMarginX)).attr('height', (numb($text.outerHeight(true)) + opts.strokeWidth*2 + shadowMarginY)).appendTo($box).css({position: 'absolute', zIndex: opts.boxzIndex});
// if excanvas is set up, we need to initialize the new canvas element
if (typeof G_vmlCanvasManager != 'undefined') {
canvas = G_vmlCanvasManager.initElement(canvas);
}
if (opts.cornerRadius > 0) {
// round the corners!
var newPoints = new Array();
var newPoint;
for (var i=0; i<points.length; i++) {
if (points[i].type == 'corner') {
// create two new arc points
// find point between this and previous (using modulo in case of ending)
newPoint = betweenPoint(points[i], points[(i-1)%points.length], opts.cornerRadius);
newPoint.type = 'arcStart';
newPoints[newPoints.length] = newPoint;
// the original corner point
newPoints[newPoints.length] = points[i];
// find point between this and next
newPoint = betweenPoint(points[i], points[(i+1)%points.length], opts.cornerRadius);
newPoint.type = 'arcEnd';
newPoints[newPoints.length] = newPoint;
} else {
newPoints[newPoints.length] = points[i];
}
}
// overwrite points with new version
points = newPoints;
}
var ctx = canvas.getContext("2d");
if (opts.shadow && opts.shadowOverlap !== true) {
var shadowOverlap = numb(opts.shadowOverlap);
// keep the shadow (and canvas) from overlapping the target element
switch (position) {
case 'top':
if (opts.shadowOffsetX + opts.shadowBlur - shadowOverlap > 0) {
$box.css('top', (numb($box.css('top')) - (opts.shadowOffsetX + opts.shadowBlur - shadowOverlap)));
}
break;
case 'right':
if (shadowShiftX - shadowOverlap > 0) {
$box.css('left', (numb($box.css('left')) + shadowShiftX - shadowOverlap));
}
break;
case 'bottom':
if (shadowShiftY - shadowOverlap > 0) {
$box.css('top', (numb($box.css('top')) + shadowShiftY - shadowOverlap));
}
break;
case 'left':
if (opts.shadowOffsetY + opts.shadowBlur - shadowOverlap > 0) {
$box.css('left', (numb($box.css('left')) - (opts.shadowOffsetY + opts.shadowBlur - shadowOverlap)));
}
break;
}
}
drawIt.apply(ctx, [points], opts.strokeWidth);
if(typeof opts.fill=="object"){
if(opts.fill.type=='gradient'){
var grd = ctx.createLinearGradient(eval(opts.fill.x1),eval(opts.fill.y1),eval(opts.fill.x2),eval(opts.fill.y2));
for(var i in opts.fill.colors){
grd.addColorStop(opts.fill.colors[i].start,opts.fill.colors[i].color);
}
ctx.fillStyle = grd;
}
}else{
ctx.fillStyle = opts.fill;
}
if (opts.shadow) {
ctx.shadowOffsetX = opts.shadowOffsetX;
ctx.shadowOffsetY = opts.shadowOffsetY;
ctx.shadowBlur = opts.shadowBlur;
ctx.shadowColor = opts.shadowColor;
}
ctx.closePath();
ctx.fill();
if (opts.strokeWidth > 0) {
ctx.shadowColor = 'rgba(0, 0, 0, 0)'; //remove shadow from stroke
ctx.lineWidth = opts.strokeWidth;
ctx.strokeStyle = opts.strokeStyle;
ctx.beginPath();
drawIt.apply(ctx, [points], opts.strokeWidth);
ctx.closePath();
ctx.stroke();
}
if(!refreshBoxOnly){
// trigger preShow function
// function receives the box element (the balloon wrapper div) as an argument
opts.preShow.apply(this, [$box[0],points]);
// switch from visibility: hidden to display: none so we can run animations
$box.css({display:'none', visibility: 'visible'});
// Here's where we show the tip
opts.showTip.apply(this, [$box[0]]);
if (opts.overlay) {
// EXPERIMENTAL AND FOR TESTING ONLY!!!!
var overlay = $('<div class="bt-overlay"></div>').css({
position: 'absolute',
backgroundColor: 'blue',
top: top,
left: left,
width: width,
height: height,
opacity: '.2'
}).appendTo(offsetParent);
$(this).data('overlay', overlay);
}
if ((opts.ajaxPath != null && opts.ajaxCache == false && !refreshBoxOnly && !imgs.length) || ajaxTimeout) {
// if ajaxCache is not enabled or if there was a server timeout,
// remove the content variable so it will be loaded again from server
content = false;
}
// stick this element into the clickAnywhereToClose stack
if (opts.clickAnywhereToClose) {
jQuery.bt.vars.clickAnywhereStack.push(this);
$(document).click(jQuery.bt.docClick);
}
// stick this element into the closeWhenOthersOpen stack
if (opts.closeWhenOthersOpen) {
jQuery.bt.vars.closeWhenOpenStack.push(this);
}
// trigger postShow function
// function receives the box element (the balloon wrapper div) as an argument
opts.postShow.apply(this, [$box[0]]);
// Close box if close event is outbox
if(opts.trigger[1]=='outbox'){
$box.mouseenter(function(){
$(target).trigger('mouseenter.bt');
}).mouseleave(function(e){
$(target).trigger('mouseleave.bt');
});
$(target).bind('mouseenter.bt',function(){
$(target).data('inbox',true);
}).bind('mouseleave.bt',function(){
setTimeout(function(){ if(!$(target).data('inbox')) $(target).btOff(); },20);
$(target).data('inbox',false);
});
}
}else{
opts.postShow.apply(this, [$box[0]]);
}
};
this.btOff = function() {
var box = $(this).data('bt-box');
// trigger preHide function
// function receives the box element (the balloon wrapper div) as an argument
opts.preHide.apply(this, [box]);
var i = this;
// set up the stuff to happen AFTER the tip is hidden
i.btCleanup = function(){
var box = $(i).data('bt-box');
var contentOrig = $(i).data('bt-content-orig');
var overlay = $(i).data('bt-overlay');
if (typeof box == 'object') {
$(box).remove();
$(i).removeData('bt-box');
}
if (typeof contentOrig == 'object') {
var clones = $(contentOrig.original).data('bt-clones');
$(contentOrig).data('bt-clones', arrayRemove(clones, contentOrig.clone));
}
if (typeof overlay == 'object') {
$(overlay).remove();
$(i).removeData('bt-overlay');
}
// remove this from the stacks
jQuery.bt.vars.clickAnywhereStack = arrayRemove(jQuery.bt.vars.clickAnywhereStack, i);
jQuery.bt.vars.closeWhenOpenStack = arrayRemove(jQuery.bt.vars.closeWhenOpenStack, i);
// remove the 'bt-active' and activeClass classes from target
$(i).removeClass('bt-active ' + opts.activeClass);
$(i).unbind('.bt');
// trigger postHide function
// no box argument since it has been removed from the DOM
opts.postHide.apply(i);
}
opts.hideTip.apply(this, [box, i.btCleanup]);
};
var refresh = this.btRefresh = function() {
this.btOff();
this.btOn();
};
});
function drawIt(points, strokeWidth) {
this.moveTo(points[0].x, points[0].y);
for (i=1;i<points.length;i++) {
if (points[i-1].type == 'arcStart') {
// if we're creating a rounded corner
//ctx.arc(round5(points[i].x), round5(points[i].y), points[i].startAngle, points[i].endAngle, opts.cornerRadius, false);
this.quadraticCurveTo(round5(points[i].x, strokeWidth), round5(points[i].y, strokeWidth), round5(points[(i+1)%points.length].x, strokeWidth), round5(points[(i+1)%points.length].y, strokeWidth));
i++;
//ctx.moveTo(round5(points[i].x), round5(points[i].y));
} else {
this.lineTo(round5(points[i].x, strokeWidth), round5(points[i].y, strokeWidth));
}
}
};
/**
* For odd stroke widths, round to the nearest .5 pixel to avoid antialiasing
* http://developer.mozilla.org/en/Canvas_tutorial/Applying_styles_and_colors
*/
function round5(num, strokeWidth) {
var ret;
strokeWidth = numb(strokeWidth);
if (strokeWidth%2) {
ret = num;
}
else {
ret = Math.round(num - .5) + .5;
}
return ret;
};
/**
* Ensure that a number is a number... or zero
*/
function numb(num) {
return parseInt(num) || 0;
};
/**
* Remove an element from an array
*/
function arrayRemove(arr, elem) {
var x, newArr = new Array();
for (x in arr) {
if (arr[x] != elem) {
newArr.push(arr[x]);
}
}
return newArr;
};
/**
* Does the current browser support canvas?
* This is a variation of http://code.google.com/p/browser-canvas-support/
*/
function canvasSupport() {
var canvas_compatible = false;
try {
canvas_compatible = !!(document.createElement('canvas').getContext('2d')); // S60
} catch(e) {
canvas_compatible = !!(document.createElement('canvas').getContext); // IE
}
return canvas_compatible;
}
/**
* Does the current browser support canvas drop shadows?
*/
function shadowSupport() {
// to test for drop shadow support in the current browser, uncomment the next line
// return true;
// until a good feature-detect is found, we have to look at user agents
try {
var userAgent = navigator.userAgent.toLowerCase();
if (/webkit/.test(userAgent)) {
// WebKit.. let's go!
return true;
}
if (/gecko|mozilla/.test(userAgent)) {
var match = userAgent.match(/firefox\/(\d+(?:\.\d+)+)/);
if (match && match.length >= 2 && parseFloat(match[1]) >= 3.1) {
// Mozilla 3.1 or higher
return true;
}
}
if (/trident\/5.0/.test(userAgent)) {
return true;
}
// Regex from jQuery to return browser and version
var match = /(chrome)[ \/]([\w.]+)/.exec( userAgent ) ||
/(webkit)[ \/]([\w.]+)/.exec( userAgent ) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( userAgent ) ||
/(msie) ([\w.]+)/.exec( userAgent ) ||
userAgent.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( userAgent ) ||
[];
if(match.length>=3 && match[1]=="msie" && parseInt(match[2])>=9){
return true;
}
} catch(err) {
// if there's an error, just keep going, we'll assume that drop shadows are not supported
}
return false;
}
/**
* Given two points, find a point which is dist pixels from point1 on a line to point2
*/
function betweenPoint(point1, point2, dist) {
// figure out if we're horizontal or vertical
var y, x;
if (point1.x == point2.x) {
// vertical
y = point1.y < point2.y ? point1.y + dist : point1.y - dist;
return {x: point1.x, y: y};
} else if (point1.y == point2.y) {
// horizontal
x = point1.x < point2.x ? point1.x + dist : point1.x - dist;
return {x:x, y: point1.y};
}
};
function centerPoint(arcStart, corner, arcEnd) {
var x = corner.x == arcStart.x ? arcEnd.x : arcStart.x;
var y = corner.y == arcStart.y ? arcEnd.y : arcStart.y;
var startAngle, endAngle;
if (arcStart.x < arcEnd.x) {
if (arcStart.y > arcEnd.y) {
// arc is on upper left
startAngle = (Math.PI/180)*180;
endAngle = (Math.PI/180)*90;
} else {
// arc is on upper right
startAngle = (Math.PI/180)*90;
endAngle = 0;
}
} else {
if (arcStart.y > arcEnd.y) {
// arc is on lower left
startAngle = (Math.PI/180)*270;
endAngle = (Math.PI/180)*180;
} else {
// arc is on lower right
startAngle = 0;
endAngle = (Math.PI/180)*270;
}
}
return {x: x, y: y, type: 'center', startAngle: startAngle, endAngle: endAngle};
};
/**
* Find the intersection point of two lines, each defined by two points
* arguments are x1, y1 and x2, y2 for r1 (line 1) and r2 (line 2)
* It's like an algebra party!!!
*/
function findIntersect(r1x1, r1y1, r1x2, r1y2, r2x1, r2y1, r2x2, r2y2) {
if (r2x1 == r2x2) {
return findIntersectY(r1x1, r1y1, r1x2, r1y2, r2x1);
}
if (r2y1 == r2y2) {
return findIntersectX(r1x1, r1y1, r1x2, r1y2, r2y1);
}
// m = (y1 - y2) / (x1 - x2) // <-- how to find the slope
// y = mx + b // the 'classic' linear equation
// b = y - mx // how to find b (the y-intersect)
// x = (y - b)/m // how to find x
var r1m = (r1y1 - r1y2) / (r1x1 - r1x2);
var r1b = r1y1 - (r1m * r1x1);
var r2m = (r2y1 - r2y2) / (r2x1 - r2x2);
var r2b = r2y1 - (r2m * r2x1);
var x = (r2b - r1b) / (r1m - r2m);
var y = r1m * x + r1b;
return {x: x, y: y};
};
/**
* Find the y intersection point of a line and given x vertical
*/
function findIntersectY(r1x1, r1y1, r1x2, r1y2, x) {
if (r1y1 == r1y2) {
return {x: x, y: r1y1};
}
var r1m = (r1y1 - r1y2) / (r1x1 - r1x2);
var r1b = r1y1 - (r1m * r1x1);
var y = r1m * x + r1b;
return {x: x, y: y};
}; // </ findIntersectY() >
/**
* Find the x intersection point of a line and given y horizontal
*/
function findIntersectX(r1x1, r1y1, r1x2, r1y2, y) {
if (r1x1 == r1x2) {
return {x: r1x1, y: y};
}
var r1m = (r1y1 - r1y2) / (r1x1 - r1x2);
var r1b = r1y1 - (r1m * r1x1);
// y = mx + b // your old friend, linear equation
// x = (y - b)/m // linear equation solved for x
var x = (y - r1b) / r1m;
return {x: x, y: y};
};
/**
* Interpret a string taht represent a position/size to return px
*/
function interpretPosition(p,width,height,top,left){
if(typeof p !== 'string') return p;
return eval(p.replace(/%/g,'/100*'+(width?width:height))
.replace(/top/g,top)
.replace(/bottom/g,top+height)
.replace(/left/g,left)
.replace(/right/g,left+width)
.replace(/px/g,''));
}
};
/**
* A convenience function to run btOn() (if available)
* for each selected item
*/
jQuery.fn.btOn = function() {