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Code Issues Releases Wiki Activity

Add tooltip viewport option, respect bounds of the viewport

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This commit is contained in:
Ben Ogle
2014-01-20 11:54:22 -08:00
parent d52ad3ee3b
commit 8534e12523
4 changed files with 252 additions and 40 deletions
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100
js/tooltip.js
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@@ -34,14 +34,19 @@
title: '',
delay: 0,
html: false,
container: false
container: false,
viewport: {
selector: 'body',
padding: 0
}
}
Tooltip.prototype.init = function (type, element, options) {
this.enabled = true
this.type = type
this.$element = $(element)
this.options = this.getOptions(options)
this.enabled = true
this.type = type
this.$element = $(element)
this.options = this.getOptions(options)
this.$viewport = this.options.viewport && $(this.options.viewport.selector || this.options.viewport)
var triggers = this.options.trigger.split(' ')
@@ -157,18 +162,14 @@
var actualHeight = $tip[0].offsetHeight
if (autoPlace) {
var $parent = this.$element.parent()
var orgPlacement = placement
var docScroll = document.documentElement.scrollTop
var parentWidth = this.options.container == 'body' ? window.innerWidth : $parent.outerWidth()
var parentHeight = this.options.container == 'body' ? window.innerHeight : $parent.outerHeight()
var parentLeft = this.options.container == 'body' ? 0 : $parent.offset().left
var $parent = this.$element.parent()
var parentDim = this.getPosition($parent)
placement = placement == 'bottom' && pos.top + pos.height + actualHeight - docScroll > parentHeight ? 'top' :
placement == 'top' && pos.top - docScroll - actualHeight < 0 ? 'bottom' :
placement == 'right' && pos.right + actualWidth > parentWidth ? 'left' :
placement == 'left' && pos.left - actualWidth < parentLeft ? 'right' :
placement = placement == 'bottom' && pos.top + pos.height + actualHeight - parentDim.scroll > parentDim.height ? 'top' :
placement == 'top' && pos.top - parentDim.scroll - actualHeight < 0 ? 'bottom' :
placement == 'right' && pos.right + actualWidth > parentDim.width ? 'left' :
placement == 'left' && pos.left - actualWidth < parentDim.left ? 'right' :
placement
$tip
@@ -228,29 +229,20 @@
var actualHeight = $tip[0].offsetHeight
if (placement == 'top' && actualHeight != height) {
replace = true
offset.top = offset.top + height - actualHeight
}
if (/bottom|top/.test(placement)) {
var delta = 0
var delta = this.getViewportAdjustedDelta(placement, offset, actualWidth, actualHeight)
if (offset.left < 0) {
delta = offset.left * -2
offset.left = 0
if (delta.left) offset.left += delta.left
else offset.top += delta.top
$tip.offset(offset)
var arrowDelta = delta.left ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
var arrowPosition = delta.left ? 'left' : 'top'
var arrowOffsetPosition = delta.left ? 'offsetWidth' : 'offsetHeight'
actualWidth = $tip[0].offsetWidth
actualHeight = $tip[0].offsetHeight
}
this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
} else {
this.replaceArrow(actualHeight - height, actualHeight, 'top')
}
if (replace) $tip.offset(offset)
$tip.offset(offset)
this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], arrowPosition)
}
Tooltip.prototype.replaceArrow = function (delta, dimension, position) {
@@ -303,12 +295,15 @@
return this.getTitle()
}
Tooltip.prototype.getPosition = function () {
var el = this.$element[0]
return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : {
width: el.offsetWidth,
height: el.offsetHeight
}, this.$element.offset())
Tooltip.prototype.getPosition = function ($element) {
$element = $element || this.$element
var el = $element[0]
var isBody = el.tagName == 'BODY'
return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : null, {
scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop(),
width: isBody ? $(window).width() : $element.outerWidth(),
height: isBody ? $(window).height() : $element.outerHeight()
}, isBody ? {top: 0, left: 0} : $element.offset())
}
Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight) {
@@ -316,6 +311,35 @@
placement == 'top' ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 } :
placement == 'left' ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
/* placement == 'right' */ { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width }
}
Tooltip.prototype.getViewportAdjustedDelta = function (placement, pos, actualWidth, actualHeight) {
var delta = { top: 0, left: 0 }
if (!this.$viewport) return delta
var viewportPadding = this.options.viewport && this.options.viewport.padding || 0
var viewportDimensions = this.getPosition(this.$viewport)
if (/right|left/.test(placement)) {
var topEdgeOffset = pos.top - viewportPadding - viewportDimensions.scroll
var bottomEdgeOffset = pos.top + viewportPadding - viewportDimensions.scroll + actualHeight
if (topEdgeOffset < viewportDimensions.top) { // top overflow
delta.top = viewportDimensions.top - topEdgeOffset
} else if (bottomEdgeOffset > viewportDimensions.top + viewportDimensions.height) { // bottom overflow
delta.top = viewportDimensions.top + viewportDimensions.height - bottomEdgeOffset
}
} else {
var leftEdgeOffset = pos.left - viewportPadding
var rightEdgeOffset = pos.left + viewportPadding + actualWidth
if (leftEdgeOffset < viewportDimensions.left) { // left overflow
delta.left = viewportDimensions.left - leftEdgeOffset
} else if (rightEdgeOffset > viewportDimensions.width) { // right overflow
delta.left = viewportDimensions.left + viewportDimensions.width - rightEdgeOffset
}
}
return delta
}
Tooltip.prototype.getTitle = function () {