I have a div that has background:transparent, along with border. Underneath this div, I have more elements.
Currently, I'm able to click the underlying elements when I click outside of the overlay div. However, I'm unable to click the underlying elements when clicking directly on the overlay div.
I want to be able to click through this div so that I can click on the underlying elements.
Yes, you CAN do this.
Using pointer-events: none along with CSS conditional statements for IE11 (does not work in IE10 or below), you can get a cross browser compatible solution for this problem.
Using AlphaImageLoader, you can even put transparent .PNG/.GIFs in the overlay div and have clicks flow through to elements underneath.
CSS:
pointer-events: none;
background: url('your_transparent.png');
IE11 conditional:
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='your_transparent.png', sizingMethod='scale');
background: none !important;
Here is a basic example page with all the code.
Yes, you CAN force overlapping layers to pass through (ignore) click events.
PLUS you CAN have specific children excluded from this behavior...
You can do this, using pointer-events
pointer-events influences the reaction to click-, tap-, scroll- und hover events.
In a layer that should ignore / pass-through mentioned events you set
pointer-events: none;
Children of that unresponsive layer that need to react mouse / tap events again need:
pointer-events: auto;
That second part is very helpful if you work with multiple overlapping div layers (probably some parents being transparent), where you need to be able to click on child elements and only that child elements.
Example usage:
.parent {
pointer-events:none;
}
.child {
pointer-events:auto;
}
<div class="parent">
I'm unresponsive
I'm clickable again, wohoo !
</div>
Allowing the user to click through a div to the underlying element depends on the browser. All modern browsers, including Firefox, Chrome, Safari, and Opera, understand pointer-events:none.
For IE, it depends on the background. If the background is transparent, clickthrough works without you needing to do anything. On the other hand, for something like background:white; opacity:0; filter:Alpha(opacity=0);, IE needs manual event forwarding.
See a JSFiddle test and CanIUse pointer events.
I'm adding this answer because I didn’t see it here in full. I was able to do this using elementFromPoint. So basically:
attach a click to the div you want to be clicked through
hide it
determine what element the pointer is on
fire the click on the element there.
var range-selector= $("")
.css("position", "absolute").addClass("range-selector")
.appendTo("")
.click(function(e) {
_range-selector.hide();
$(document.elementFromPoint(e.clientX,e.clientY)).trigger("click");
});
In my case the overlaying div is absolutely positioned—I am not sure if this makes a difference. This works on IE8/9, Safari Chrome and Firefox at least.
Hide overlaying the element
Determine cursor coordinates
Get element on those coordinates
Trigger click on element
Show overlaying element again
$('#elementontop').click(e => {
$('#elementontop').hide();
$(document.elementFromPoint(e.clientX, e.clientY)).trigger("click");
$('#elementontop').show();
});
I needed to do this and decided to take this route:
$('.overlay').click(function(e){
var left = $(window).scrollLeft();
var top = $(window).scrollTop();
//hide the overlay for now so the document can find the underlying elements
$(this).css('display','none');
//use the current scroll position to deduct from the click position
$(document.elementFromPoint(e.pageX-left, e.pageY-top)).click();
//show the overlay again
$(this).css('display','block');
});
I currently work with canvas speech balloons. But because the balloon with the pointer is wrapped in a div, some links under it aren't click able anymore. I cant use extjs in this case.
See basic example for my speech balloon tutorial requires HTML5
So I decided to collect all link coordinates from inside the balloons in an array.
var clickarray=[];
function getcoo(thatdiv){
thatdiv.find(".link").each(function(){
var offset=$(this).offset();
clickarray.unshift([(offset.left),
(offset.top),
(offset.left+$(this).width()),
(offset.top+$(this).height()),
($(this).attr('name')),
1]);
});
}
I call this function on each (new) balloon. It grabs the coordinates of the left/top and right/down corners of a link.class - additionally the name attribute for what to do if someone clicks in that coordinates and I loved to set a 1 which means that it wasn't clicked jet. And unshift this array to the clickarray. You could use push too.
To work with that array:
$("body").click(function(event){
event.preventDefault();//if it is a a-tag
var x=event.pageX;
var y=event.pageY;
var job="";
for(var i in clickarray){
if(x>=clickarray[i][0] && x<=clickarray[i][2] && y>=clickarray[i][1] && y<=clickarray[i][3] && clickarray[i][5]==1){
job=clickarray[i][4];
clickarray[i][5]=0;//set to allready clicked
break;
}
}
if(job.length>0){
// --do some thing with the job --
}
});
This function proofs the coordinates of a body click event or whether it was already clicked and returns the name attribute. I think it is not necessary to go deeper, but you see it is not that complicate.
Hope in was enlish...
Another idea to try (situationally) would be to:
Put the content you want in a div;
Put the non-clicking overlay over the entire page with a z-index higher,
make another cropped copy of the original div
overlay and abs position the copy div in the same place as the original content you want to be clickable with an even higher z-index?
Any thoughts?
I think the event.stopPropagation(); should be mentioned here as well. Add this to the Click function of your button.
Prevents the event from bubbling up the DOM tree, preventing any parent handlers from being notified of the event.
Just wrap a tag around all the HTML extract, for example
<a href="/categories/1">
<img alt="test1" class="img-responsive" src="/assets/photo.jpg" />
<div class="caption bg-orange">
<h2>
test1
</h2>
</div>
</a>
in my example my caption class has hover effects, that with pointer-events:none; you just will lose
wrapping the content will keep your hover effects and you can click in all the picture, div included, regards!
An easier way would be to inline the transparent background image using Data URIs as follows:
.click-through {
pointer-events: none;
background: url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7);
}
I think that you can consider changing your markup. If I am not wrong, you'd like to put an invisible layer above the document and your invisible markup may be preceding your document image (is this correct?).
Instead, I propose that you put the invisible right after the document image but changing the position to absolute.
Notice that you need a parent element to have position: relative and then you will be able to use this idea. Otherwise your absolute layer will be placed just in the top left corner.
An absolute position element is positioned relative to the first parent
element that has a position other than static.
If no such element is found, the containing block is html
Hope this helps. See here for more information about CSS positioning.
You can place an AP overlay like...
#overlay {
position: absolute;
top: -79px;
left: -60px;
height: 80px;
width: 380px;
z-index: 2;
background: url(fake.gif);
}
<div id="overlay"></div>
just put it over where you dont want ie cliked. Works in all.
This is not a precise answer for the question but may help in finding a workaround for it.
I had an image I was hiding on page load and displaying when waiting on an AJAX call then hiding again however...
I found the only way to display my image when loading the page then make it disappear and be able to click things where the image was located before hiding it was to put the image into a DIV, make the size of the DIV 10x10 pixels or small enough to prevent it causing an issue then hiding the containing div. This allowed the image to overflow the div while visible and when the div was hidden, only the divs area was affected by inability to click objects beneath and not the whole size of the image the DIV contained and was displaying.
I tried all the methods to hide the image including CSS display=none/block, opacity=0, hiding the image with hidden=true. All of them resulted in my image being hidden but the area where it was displayed to act like there was a cover over the stuff underneath so clicks and so on wouldn't act on the underlying objects. Once the image was inside a tiny DIV and I hid the tiny DIV, the entire area occupied by the image was clear and only the tiny area under the DIV I hid was affected but as I made it small enough (10x10 pixels), the issue was fixed (sort of).
I found this to be a dirty workaround for what should be a simple issue but I was not able to find any way to hide the object in its native format without a container. My object was in the form of etc. If anyone has a better way, please let me know.
I couldn't always use pointer-events: none in my scenario, because I wanted both the overlay and the underlying element(s) to be clickable / selectable.
The DOM structure looked like this:
<div id="outerElement">
<div id="canvas-wrapper">
<canvas id="overlay"></canvas>
</div>
<!-- Omitted: element(s) behind canvas that should still be selectable -->
</div>
(The outerElement, canvas-wrapper and canvas elements have the same size.)
To make the elements behind the canvas act normally (e.g. selectable, editable), I used the following code:
canvasWrapper.style.pointerEvents = 'none';
outerElement.addEventListener('mousedown', event => {
const clickedOnElementInCanvas = yourCheck // TODO: check if the event *would* click a canvas element.
if (!clickedOnElementInCanvas) {
// if necessary, add logic to deselect your canvas elements ...
wrapper.style.pointerEvents = 'none';
return true;
}
// Check if we emitted the event ourselves (avoid endless loop)
if (event.isTrusted) {
// Manually forward element to the canvas
const mouseEvent = new MouseEvent(event.type, event);
canvas.dispatchEvent(mouseEvent);
mouseEvent.stopPropagation();
}
return true;
});
Some canvas objects also came with input fields, so I had to allow keyboard events, too.
To do this, I had to update the pointerEvents property based on whether a canvas input field was currently focused or not:
onCanvasModified(canvas, () => {
const inputFieldInCanvasActive = // TODO: Check if an input field of the canvas is active.
wrapper.style.pointerEvents = inputFieldInCanvasActive ? 'auto' : 'none';
});
it doesn't work that way. the work around is to manually check the coordinates of the mouse click against the area occupied by each element.
area occupied by an element can found found by 1. getting the location of the element with respect to the top left of the page, and 2. the width and the height. a library like jQuery makes this pretty simple, although it can be done in plain js. adding an event handler for mousemove on the document object will provide continuous updates of the mouse position from the top and left of the page. deciding if the mouse is over any given object consists of checking if the mouse position is between the left, right, top and bottom edges of an element.
Nope, you can't click ‘through’ an element. You can get the co-ordinates of the click and try to work out what element was underneath the clicked element, but this is really tedious for browsers that don't have document.elementFromPoint. Then you still have to emulate the default action of clicking, which isn't necessarily trivial depending on what elements you have under there.
Since you've got a fully-transparent window area, you'll probably be better off implementing it as separate border elements around the outside, leaving the centre area free of obstruction so you can really just click straight through.
I'm using the leaflet styled layer control plug in to customize my map control.
I'm trying to add a button to the top right corner of my controls that closes the controls (primarily for mobile use).
I found this question and it works, but now I'm wondering how I can position this button. I want it to be in the top right corner of the control.
When I position the class "leaflet-control-close" it works (I tested with "position: relative; float: right;" and it did float right but stayed at the bottom), but if I give it an absolute position at the top of the page it seems to be appear behind my overlays.
I want it to push down the overlays a little bit so that it doesn't overlap.
EDIT: here is a jsfiddle showing what's happening. It's a little convoluted because the styled layer control files don't have a CDN so I just pasted in the CSS and javascript. I made a note where I add the button in the original Javascript, and below that JS is the JS to create the map and overlays.
I know the button on a desktop is kind of annoying because when you close the control with it, it immediately pops back open because your mouse is hovering. In my actual code I've set the display to none if the screen width is larger than tablet size, because that's the only time I feel like I need the button.
I customized the styled layer control javascript in order to include the button:
L.Control.StyledLayerControl = L.Control.Layers.extend({
onAdd: function(map) {
this._initLayout();
this._update();
this._addButton();
map
.on('layeradd', this._onLayerChange, this)
.on('layerremove', this._onLayerChange, this);
return this._container;
},
_addButton: function () {
var elements = this._container.getElementsByClassName('leaflet-control-layers-list');
var button = L.DomUtil.create('button', 'layer-control-close', elements[0]);
button.innerText = 'Close control';
L.DomEvent.on(button, 'click', function(e){
L.DomEvent.stop(e);
this._collapse();
}, this);
}
)};
I'm trying to create a spot the difference game with jQuery.
Basically, several images stacked, positioned absolutely in a container. Above the container there is the page header with a logo and a menu, which takes altogather about 120px above the images container.
When someone clicks an area inside the image, I put there a new div, with either a correct (V) mark, or a wrong (red X).
I'm trying to get the position of the click inside the element, using the following code (the following used event variable e is returned in the click event just to be clear):
var parentOffset = $(this).parent().offset();
var topOffset = e.clientY - offset.top;
My problem is that the offset from the top changes when I scroll the page down a little to the footer area, and then I do not position the new marker div in the correct height.
When I'm scrolled to the top of the page, the mark is position correctly.
I've created such a game before, but can't understand why suddenly the calculation is wrong :\
Seems that I get the distance minus the scroll height, but not sure.
Thanks for your insight,
Yanipan
I played around with Firebug a little and it looks like e.originalEvent.layerY is exactly what you're looking for.
It always shows the absolute coordinates of your click within the clicked object, no matter where the screen is scrolled.
The pop up image for "ice white" and "violet" pop up in different places. How do I make them both pop up in just one position?
Could you perhaps define a single div that uses absolute position and then on hover over Violet or Ice White, draw the popup image inside that div you created?
So something like:
var displayDiv = document.getElementById("displayDivID");
// draw popup image in the div
displayDiv.innerHTML = "<div id=\"violet\">...</div>";
displayDiv.style.display = "block"; // to show it
That way, whenever you need to display an image in the same position, it's always drawn inside that div you specified.
I would assume you have a class that controls the formatting of that div like position and borders etc.
EDIT
I've taken your code from your site and added some more code.
Save this code as a html page onto your computer and try it.
Look for the last css code snippet right before the closing tag. That block of css there controls the look of the div and position it in the middle of the page. The css only sets a fixed position. You could alternatively, use javascript to dynamically calculate the width and height of the user's browser window, then render the css code accordingly so the div is always in the middle of the browser regardless of the inner image dimension.
In your previous javascript code snippet for the displayDiv, I've fixed up a few things and added two functions for when the mouse is over a thumbnail and when it's out of a thumbnail. On mouse over will pass the url of the image to the function that will be used to render an image into the displayDiv.
Hope that helps.
EDIT 2 - Fade In and Out
You certainly can.
All you need to do is change the two functions to use jQuery fadeIn() and fadeOut() like so:
function changeDisplay(bgImageURL)
{
var displayDiv = document.getElementById("displayDiv");
// draw popup image in the div
displayDiv.innerHTML =
'<a class="popup1" href="#v"><img src="' + bgImageURL+ '" alt="" /></a>';
// show the display in case it was hidden before
$('#displayDiv').fadeIn();
}
function hideDisplay()
{
// hide it when the mouse rolls off the thumbnail
$('#displayDiv').fadeOut();
}
This jQuery is a basic one. It will have a problem where if you move your mouse on and off the thumbnail quickly, it causes the display div to come on and off, on and off, on and off even if your mouse is already off the thumbnail.
The proper way would be to rework the code and use mouseEnter and mouseLeave on the thubmnail elements.
I'm trying adding fancy close buttons dynamically to html elements
code is:
function add_close_box(element,img_close_box,base_url_close_box){
var i;
$.each($('.'+element),function(i){
$(this).addClass('close_box'+i);
var x = $('.close_box'+i).offset().left;
var y = $('.close_box'+i).offset().top;
$('body').append('<img src="'+base_url_close_box+img_close_box+'">');
$('.img_close_box_'+i).css({'position':'absolute','top':y-10,'left':x+$('.close_box'+i).width()-20});
$('.img_close_box_'+i).live('click',function(){
var hei = $('.'+element).height();
$('.img_close_box_'+i+','+'.close_box'+i).hide();
$.each('.'+element,function(e){
$('.img_close_box_'+(e)).animate({
'top':'-='+hei
},0);
});
});
});
}
it works good but when click on button and element is fadeOut() other close buttons doesn't follows their own related element cause of absolute position they remain in same positions while elements scroll up (first element fadeOut next element scroll up and close button remain in same position)
i would like that close buttons could follow their related element.
Also cause my lazy mind i would like to know if anyone knows some good jquery plugin to do what I'm trying to code, something with also ajax callback after closebox button click (do not reply to watch jQuery UI please :) )
thanks ;)
I have to make a few assumptions because you haven't posted your markup. I think Diodeus is on the right track. You're using absolute positioning for your new close button. Absolute positioning will look up in the DOM until it finds a relatively positioned element to anchor the coordinates. if the element you pass in doesn't have the property position:relative then the button could be positioned anywhere.
Two possible fixes:
Add relative positioning to everything you add the close button to:
element.css({'position':'relative'});
Obviously this will replace any other previously set positioning. There's a chance this blows up your layout if you're adding close buttons all over the place.
The second option is to make sure the only relatively positioned element is something high in the DOM, so all of your close buttons are positioned based on the same thing. It's a little hacky, but then you can position them based on the x and y of the element:
var x = element.position().x;
var y = element.position().y;
// you can add the necessary offsets like element width or height