How to make popover appear where my mouse enters the hover target?

问题

This is an example code to show the popover window display below my button:

$.fn.popover.defaults = $.extend({} , $.fn.tooltip.defaults, {
placement: 'bottom', content: ''

Now I want the popover window appear on the place where my cursor moves on(not only top/bottom/left/right, but a specific location which depends on where user put their cursor on).

How to get it?

回答1:

In bootstrap-tooltip.js, replace (at about line 72)

     , enter: function (e) {

with

     , enter: function (e) {
       var mousePos = { x: -1, y: -1 };
       mousePos.x = e.pageX;
       mousePos.y = e.pageY;
       window.mousePos = mousePos;

and replace (at about line 144)

      case 'right':
            tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width}
            break

with

      case 'right':
        tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width}
        break
      case 'mouse':
        tp = {top: window.mousePos.y, left: window.mousePos.x}
        break

Then call your popover like this:

$('.pop').popover({'placement': 'mouse'});

This is a quick-n-dirty way to go about it (hacking core files), but it works. Perhaps someone else has a nicer method. Note that the popover pointer will need some work as it doesn't appear.

This example was tested in Bootstrap 2.0.3, but the code appears similar in 2.2.2.

回答2:

For bootstrap 3.x.x

1.Add attribute atMouse:false to the inline class Tooltip.DEFAULTS{}.

Tooltip.DEFAULTS = {
 animation: true,
 placement: 'top',
 selector: false,
 template: '<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',
 trigger: 'hover focus',
 title: '',
 delay: 0,
 html: false,
 container: false,
 atMouse: false,
 viewport: {
   selector: 'body',
   padding: 0
 }
}

2.Go to the line 1368 inside of method "Tooltip.prototype.enter" and change the following code:

if (obj instanceof $.Event) {
  self.inState[obj.type == 'focusin' ? 'focus' : 'hover'] = true
}

to:

if (obj instanceof $.Event) {
  self.inState[obj.type == 'focusin' ? 'focus' : 'hover'] = true
  self.options.mousePos = {posX: obj['pageX'], posY: obj['pageY']}
}

3.Inside of the method "Tooltip.prototype.show" add following code:

if(this.options.atMouse) {
  pos['posY'] = this.options.mousePos['posY'];
  pos['posX'] = this.options.mousePos['posX'];
}

before this line of code:

var calculatedOffset = this.getCalculatedOffset(placement, pos,
        actualWidth, actualHeight)

4.Prepend to the body of Tooltip.prototype.getCalculatedOffset method following code:

if(this.options.atMouse) {
  return placement == 'bottom' ? {top: pos.top + pos.height, left: pos.posX - (actualWidth / 2)} :
  placement == 'top' ? {top: pos.top - actualHeight, left: pos.posX - (actualWidth / 2)} :
  placement == 'left' ? {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.posX - actualWidth} :
  {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.posX}
}

5.Call tooltip/popover something like this:

$("[data-toggle='popover']").popover({
    html: true,
    container: 'body',
    atMouse: true,
    trigger: 'hover',
    animation: false,
    placement: "top auto"
  });

Work for me.

来源：https://stackoverflow.com/questions/14743076/how-to-make-popover-appear-where-my-mouse-enters-the-hover-target

标签

javascript

jquery

twitter-bootstrap

cursor

bootstrap-popover