Tooltips now properly disappear when another text box with a tooltip has been highlighted.
Also known as Issue 132.
Patch by: Mario Ferraro
Reviewed by: Lennard de Rijk
/*
* jQuery Beauty Tips plugin
* Version 0.7 (10/20/2008)
* @requires jQuery v1.2+ (not fully tested on versions prior to 1.2.6)
*
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* No guarantees, warranties, or promises of any kind
*
*/
/**
* @name Beauty Tips
* @type jQuery
* @cat Plugins/bt
* @return jQuery
* @author Jeff Robbins - Lullabot - http://www.lullabot.com
*
* @credit Inspired by Karl Swedberg's ClueTip
* (http://plugins.learningjquery.com/cluetip/), which in turn was inspired
* by Cody Lindley's jTip (http://www.codylindley.com)
*
* @fileoverview
* Beauty Tips is a jQuery tooltips plugin which uses the canvas drawing element
* in the HTML5 spec in order to dynamically draw tooltip "talk bubbles" around
* the descriptive help text associated with an item. This is in many ways
* similar to Google Maps which both provides similar talk-bubbles and uses the
* canvas element to draw them.
*
* The canvas element is supported in modern versions of FireFox, Safari, and
* Opera. However, Internet Explorer needs a separate library called ExplorerCanvas
* included on the page in order to support canvas drawing functions. ExplorerCanvas
* was created by Google for use with their web apps and you can find it here:
* http://excanvas.sourceforge.net/
*
* Beauty Tips was written to be simple to use and pretty. All of its options
* are documented at the bottom of this file and defaults can be overwritten
* globally for the entire page, or individually on each call.
*
* By default each tooltip will be positioned on the side of the target element
* which has the most free space. This is affected by the scroll position and
* size of the current window, so each Beauty Tip is redrawn each time it is
* displayed. It may appear above an element at the bottom of the page, but when
* the page is scrolled down (and the element is at the top of the page) it will
* then appear below it. Additionally, positions can be forced or a preferred
* order can be defined. See examples below.
*
* Usage
* The function can be called in a number of ways.
* $(selector).bt();
* $(selector).bt('Content text');
* $(selector).bt('Content text', {option1: value, option2: value});
* $(selector).bt({option1: value, option2: value});
*
* Some examples:
*
* @example
* $('[title]').bt();
* This is probably the simplest example. It will go through the page finding
* every element which has a title attribute and give it a Beauty Tips popup
* which gets fired on hover.
*
* @example
* $('h2').bt('I am an H2 element!', {trigger: 'click', positions: 'top'});
* When any H2 element on the page is clicked on, a tip will appear above it.
*
* @example
* $('a[href]').bt({
* titleSelector: "attr('href')",
* fill: 'red',
* cssStyles: {color: 'white', fontWeight: 'bold', width: 'auto'},
* width: 400,
* padding: 10,
* cornerRadius: 10,
* animate: true,
* spikeLength: 15,
* spikeGirth: 5,
* positions: ['left', 'right', 'bottom'],
* });
* This will find all <a> tags and display a red baloon with bold white text
* containing the href link. The box will be a variable width up to 400px with
* rounded corners and will fade in and animate position toward the target
* object when appearing. The script will try to position the box to the left,
* then to the right, and finally it will place it on the bottom if it does not
* fit elsewhere.
*
* @example
* $('#my-table td[title]').bt({
* preShow: function() {
* $(this).data('origBG', $(this).css('background-color'));
* $(this).css('background-color', 'yellow');
* },
* postHide: function() {
* $(this).css('background-color', $(this).data('origBG'));
* }
* });
* Find every table cell within #mytable with a title attribute. Hilight the cell
* yellow before displaying the BeautyTip. Restore it to its original background
* when hiding/removing the BeautyTip.
*
* @example
* $().bt.defaults.fill = 'rgba(102, 102, 255. .8)';
* $(selector).bt();
* All bubbles will be filled with a semi-transparent light-blue background
* unless otherwise specified.
*
*/
jQuery.fn.bt = function(content, options) {
if (typeof content != 'string') {
var contentSelect = true;
options = content;
content = false;
}
else {
var contentSelect = false;
}
var tooltips_pool = [];
return this.each(function(index) {
tooltips_pool.push(this);
var opts = jQuery.extend(false, jQuery.fn.bt.defaults, options);
// clean up the options
opts.spikeLength = numb(opts.spikeLength);
opts.spikeGirth = numb(opts.spikeGirth);
opts.overlap = numb(opts.overlap);
var turnOn = function () {
for (var x in tooltips_pool) {
turnOff.apply(tooltips_pool[x]);
}
if (typeof $(this).data('bt-box') == 'object') {
// if there's already a popup, remove it before creating a new one.
turnOff.apply(this);
}
// trigger preShow function
opts.preShow.apply(this);
if (contentSelect) {
// 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', $(this).attr('bt-xTitle'));
}
// then evaluate the selector... title is now in place
content = eval('$(this).' + opts.titleSelector);
if (opts.killTitle) {
// now remove the title again, so we don't get double tips
$(this).removeAttr('title');
}
}
var offsetParent = $(this).offsetParent();
var pos = $(this).btPosition();
var top = numb(pos.top) + numb($(this).css('margin-top')); // IE can return 'auto' for margins
var left = numb(pos.left) + numb($(this).css('margin-left'));
var width = $(this).outerWidth();
var height = $(this).outerHeight();
// get the dimensions of the text box
var $text = $('<div class="bt-content"></div>').append(content).css({padding: opts.padding + 'px', position: 'absolute', width: opts.width + 'px', zIndex: opts.textzIndex}).css(opts.cssStyles);
var $box = $('<div class="bt-wrapper"></div>').append($text).addClass(opts.cssClass).css({position: 'absolute', width: opts.width + 'px'}).appendTo(offsetParent);
$(this).data('bt-box', $box);
// see if the text box will fit in the various positions
var scrollTop = numb($(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();
space.top = $(this).offset().top - scrollTop;
space.bottom = docHeight - (($(this).offset().top + height) - scrollTop);
space.left = $(this).offset().left - scrollLeft;
space.right = docWidth - (($(this).offset().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];
if ((position == 'left' || position == 'right') && space[position] > textOutWidth + opts.spikeLength) {
break;
}
else if ((position == 'top' || position == 'bottom') && space[position] > textOutHeight + opts.spikeLength) {
break;
}
}
}
var horiz = left + ((width - textOutWidth)/2);
var vert = top + ((height - textOutHeight)/2);
var animDist = opts.animate ? numb(opts.distance) : 0;
var points = new Array();
var textTop, textLeft, textRight, textBottom, textTopSpace, textBottomSpace, textLeftSpace, textRightSpace, crossPoint, textCenter;
// 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) {
case 'top':
// spike on bottom
$text.css('margin-bottom', opts.spikeLength + 'px');
$box.css({top: (top - $text.outerHeight(true) - animDist) + opts.overlap, left: horiz});
// move text left/right if extends out of window
textRightSpace = (winRight - opts.windowMargin) - ($text.offset().left + $text.outerWidth(true));
var xShift = 0;
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 = $text.btPosition().top + numb($text.css('margin-top'));
textLeft = $text.btPosition().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + ($text.outerWidth()/2), y: textTop + ($text.outerHeight()/2)};
// points[points.length] = {x: x, y: y};
points[points.length] = spikePoint = {y: textBottom + opts.spikeLength, x: ((textRight-textLeft)/2) + xShift, type: 'spike'};
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 = 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;
break;
case 'left':
// spike on right
$text.css('margin-right', opts.spikeLength + 'px');
$box.css({top: vert + 'px', left: ((left - $text.outerWidth(true) - animDist) + opts.overlap) + 'px'});
// move text up/down if extends out of window
textBottomSpace = (winBottom - opts.windowMargin) - ($text.offset().top + $text.outerHeight(true));
var yShift = 0;
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 = $text.btPosition().top + numb($text.css('margin-top'));
textLeft = $text.btPosition().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + ($text.outerWidth()/2), y: textTop + ($text.outerHeight()/2)};
points[points.length] = spikePoint = {x: textRight + opts.spikeLength, y: ((textBottom-textTop)/2) + yShift, type: 'spike'};
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 = 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;
break;
case 'bottom':
// spike on top
$text.css('margin-top', opts.spikeLength + 'px');
$box.css({top: (top + height + animDist) - opts.overlap, left: horiz});
// move text up/down if extends out of window
textRightSpace = (winRight - opts.windowMargin) - ($text.offset().left + $text.outerWidth(true));
var xShift = 0;
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 = $text.btPosition().top + numb($text.css('margin-top'));
textLeft = $text.btPosition().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + ($text.outerWidth()/2), y: textTop + ($text.outerHeight()/2)};
points[points.length] = spikePoint = {x: ((textRight-textLeft)/2) + xShift, y: 0, type: 'spike'};
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 = 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;
break;
case 'right':
// spike on left
$text.css('margin-left', (opts.spikeLength + 'px'));
$box.css({top: vert + 'px', left: ((left + width + animDist) - opts.overlap) + 'px'});
// move text up/down if extends out of window
textBottomSpace = (winBottom - opts.windowMargin) - ($text.offset().top + $text.outerHeight(true));
var yShift = 0;
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 = $text.btPosition().top + numb($text.css('margin-top'));
textLeft = $text.btPosition().left + numb($text.css('margin-left'));
textRight = textLeft + $text.outerWidth();
textBottom = textTop + $text.outerHeight();
textCenter = {x: textLeft + ($text.outerWidth()/2), y: textTop + ($text.outerHeight()/2)};
points[points.length] = spikePoint = {x: 0, y: ((textBottom-textTop)/2) + yShift, type: 'spike'};
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 = 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;
break;
} // </ switch >
var canvas = $('<canvas width="'+ (numb($text.outerWidth(true)) + opts.strokeWidth*2) +'" height="'+ (numb($text.outerHeight(true)) + opts.strokeWidth*2) +'"></canvas>').appendTo($box).css({position: 'absolute', top: $text.btPosition().top, left: $text.btPosition().left, zIndex: opts.boxzIndex}).get(0);
// 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");
drawIt.apply(ctx, [points]);
ctx.fillStyle = opts.fill;
if (opts.shadow) {
ctx.shadowOffsetX = 2;
ctx.shadowOffsetY = 2;
ctx.shadowBlur = 5;
ctx.shadowColor = opts.shadowColor;
}
ctx.closePath();
ctx.fill();
if (opts.strokeWidth > 0) {
ctx.lineWidth = opts.strokeWidth;
ctx.strokeStyle = opts.strokeStyle;
ctx.beginPath();
drawIt.apply(ctx, [points]);
ctx.closePath();
ctx.stroke();
}
if (opts.animate) {
$box.css({opacity: 0.1});
}
$box.css({visibility: 'visible'});
if (opts.overlay) {
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);
}
var animParams = {opacity: 1};
if (opts.animate) {
switch (position) {
case 'top':
animParams.top = $box.btPosition().top + opts.distance;
break;
case 'left':
animParams.left = $box.btPosition().left + opts.distance;
break;
case 'bottom':
animParams.top = $box.btPosition().top - opts.distance;
break;
case 'right':
animParams.left = $box.btPosition().left - opts.distance;
break;
}
$box.animate(animParams, {duration: opts.speed, easing: opts.easing});
}
// trigger postShow function
opts.postShow.apply(this);
} // </ turnOn() >
var turnOff = function() {
// trigger preHide function
opts.preHide.apply(this);
var box = $(this).data('bt-box');
var overlay = $(this).data('bt-overlay');
if (typeof box == 'object') {
$(box).remove();
$(this).removeData('bt-box');
}
if (typeof overlay == 'object') {
$(overlay).remove();
$(this).removeData('bt-overlay');
}
// trigger postHide function
opts.postHide.apply(this);
} // </ turnOff() >
var refresh = function() {
turnOff.apply(this);
turnOn.apply(this);
}
/**
* This is sort of the "starting spot" for the this.each()
* These are sort of the init functions to handle the call
*/
if (opts.killTitle) {
$(this).find('[title]').andSelf().each(function() {
$(this).attr('bt-xTitle', $(this).attr('title')).removeAttr('title');
});
}
if (typeof opts.trigger == 'string') {
opts.trigger = [opts.trigger];
}
if (opts.trigger[0] == 'hover') {
$(this).hover(
function() {
turnOn.apply(this);
},
function() {
turnOff.apply(this);
}
);
}
else if (opts.trigger[0] == 'now') {
var box = $(this).data('bt-box');
if (typeof box == 'object') {
turnOff.apply(this);
}
else {
turnOn.apply(this);
}
}
else if (opts.trigger.length > 1 && opts.trigger[0] != opts.trigger[1]) {
$(this)
.bind(opts.trigger[0], function() {
turnOn.apply(this);
})
.bind(opts.trigger[1], function() {
turnOff.apply(this);
});
}
else {
// toggle using the same event
$(this).bind(opts.trigger[0], function() {
if (typeof this.triggerToggle == 'undefined') {
this.triggerToggle = false;
}
this.triggerToggle = !this.triggerToggle;
if (this.triggerToggle) {
turnOn.apply(this);
}
else {
turnOff.apply(this);
}
});
}
}); // </ this.each() >
function drawIt(points) {
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), round5(points[i].y), round5(points[(i+1)%points.length].x), round5(points[(i+1)%points.length].y));
i++;
//ctx.moveTo(round5(points[i].x), round5(points[i].y));
}
else {
this.lineTo(round5(points[i].x), round5(points[i].y));
}
}
}
/**
* Round to the nearest .5 pixel to avoid antialiasing
* http://developer.mozilla.org/en/Canvas_tutorial/Applying_styles_and_colors
*/
function round5(num) {
return Math.round(num - .5) + .5;
}
/**
* Ensure that a number is a number... or zero
*/
function numb(num) {
return parseInt(num) || 0;
}
/**
* 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};
}
/**
* 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};
}
}; // </ jQuery.fn.bt() >
/**
* jQuery's compat.js (used in Drupal's jQuery upgrade module, overrides the $().position() function
* this is a copy of that function to allow the plugin to work when compat.js is present
* once compat.js is fixed to not override existing functions, this function can be removed
* and .btPosion() can be replaced with .position() above...
*/
jQuery.fn.btPosition = function() {
function num(elem, prop) {
return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
}
var left = 0, top = 0, results;
if ( this[0] ) {
// Get *real* offsetParent
var offsetParent = this.offsetParent(),
// Get correct offsets
offset = this.offset(),
parentOffset = /^body|html$/i.test(offsetParent[0].tagName) ? { top: 0, left: 0 } : offsetParent.offset();
// Subtract element margins
// note: when an element has margin: auto the offsetLeft and marginLeft
// are the same in Safari causing offset.left to incorrectly be 0
offset.top -= num( this, 'marginTop' );
offset.left -= num( this, 'marginLeft' );
// Add offsetParent borders
parentOffset.top += num( offsetParent, 'borderTopWidth' );
parentOffset.left += num( offsetParent, 'borderLeftWidth' );
// Subtract the two offsets
results = {
top: offset.top - parentOffset.top,
left: offset.left - parentOffset.left
};
}
return results;
}; // </ jQuery.fn.btPosition() >
/**
* Defaults for the beauty tips
*
* Note this is a variable definition and not a function. So defaults can be
* written for an entire page by simply redefining attributes like so:
*
* jQuery.fn.bt.defaults.width = 400;
*
* This would make all Beauty Tips boxes 400px wide.
*
* Each of these options may also be overridden during
*
* Can be overriden globally or at time of call.
*
*/
jQuery.fn.bt.defaults = {
trigger: 'hover', // trigger to show/hide tip
// use [on, off] to define separate on/off triggers
// also use space character to allow multiple events to trigger
// examples:
// ['focus', 'blur'] // focus displays, blur hides
// 'dblclick' // dblclick toggles on/off
// ['focus mouseover', 'blur mouseout']
// 'now' // shows/hides tip without event
width: 200, // width (in px) of tooltip box
// when combined with cssStyles: {width: 'auto'}, this becomes a max-width for the text
padding: 10, // padding for content (get more fine grained with cssStyles)
spikeGirth: 10, // width of spike
spikeLength: 15, // length of spike
overlap: 0, // spike overlap (px) onto target
overlay: false, // display overlay on target (use CSS to style) -- BUGGY!
killTitle: true, // kill title tag to avoid double tooltips
textzIndex: 9999, // z-index for the text
boxzIndex: 9990, // z-index for the "talk" box (should always be less than textzIndex)
positions: ['most'], // preference of positions for tip (will use first with available space)
// possible values 'top', 'bottom', 'left', 'right' as an array in order of
// preference. Last value will be used if others don't have enough space.
// or use 'most' to use the area with the most space
fill: "rgb(255, 255, 102)", // fill color for the tooltip box
windowMargin: 10, // space (px) to leave between text box and browser edge
strokeWidth: 1, // width of stroke around box, **set to 0 for no stroke**
strokeStyle: "#000", // color/alpha of stroke
cornerRadius: 5, // radius of corners (px), set to 0 for square corners
shadow: false, // use drop shadow? (only displays in Safari and FF 3.1)
shadowOffsetX: 2, // shadow offset x (px)
shadowOffsetY: 2, // shadow offset y (px)
shadowBlur: 3, // shadow blur (px)
shadowColor: "#000", // shadow color/alpha
animate: false, // animate show/hide of box - EXPERIMENTAL (buggy in IE)
distance: 15, // distance of animation movement (px)
easing: 'swing', // animation easing
speed: 200, // speed (ms) of animation
cssClass: '', // CSS class to add to the box wrapper div
cssStyles: {}, // styles to add the text box
// example: {fontFamily: 'Georgia, Times, serif', fontWeight: 'bold'}
titleSelector: "attr('title')", // if there is no content argument, use this selector to retrieve the title
preShow: function(){return;}, // function to run before popup is built and displayed
postShow: function(){return;}, // function to run after popup is built and displayed
preHide: function(){return;}, // function to run before popup is removed
postHide: function(){return;} // function to run after popup is removed
}; // </ jQuery.bt.defaults >