I'm currently working on an A-Frame AR app by using ar.js (I have to use ar.js). The goal is to dynamically add objects to the scene when tapping on the scene. Unfortunately nothing seems to work out. I managed to change the colors of an existing object when tapping on the screen but not adding a new one. Could someone please help me out here? I would be really grateful!
AFRAME.registerComponent('cursor-listener', {
init: function () {
var currentEl = this.el;
currentEl.addEventListener("click", function (evt) {
console.log("I was clicked!");
currentEl.setAttribute('material', {"color": "blue"});
var el = document.createElement("a-entity");
el.setAttribute('geometry', { "primitive": "sphere", "radius": "1" });
el.setAttribute('position', this.el.object3D.position)
const randomYRotation = Math.random() * 360
el.setAttribute('rotation', `0 ${randomYRotation} 0`)
el.setAttribute('visible', 'true')
el.setAttribute('shadow', {receive: false})
this.el.sceneEl.appendChild(el);
});
},
});
this.el.sceneEl.appendChild(el);
You should append the element to the marker node, and treat it as your "root" element - as it's the one being tracked when detected by camera:
<script>
AFRAME.registerComponent('cursor-listener', {
init:function () {
const marker = document.querySelector("a-marker")
var el = document.createElement("a-sphere");
marker.appendChild(el);
}
})
</script>
<!-- scene and stuff -->
<a-marker preset="hiro>
</a-marker>
Working on an OL3 map, and am getting stuck on popover style. I haven't added any CSS to change it at all and it is currently being handled by default Bootstrap settings.
Okay so the problem: each word is being displayed on it's own line. How can I change this? Or, a better question, how do I control the style of the popovers?
This is was it looks like now: http://i.imgur.com/lrLYbag.png
The code handling popups:
//popups
var element = document.getElementById('popup');
var popup = new ol.Overlay({
element: element,
positioning: 'bottom-center',
stopEvent: false
});
map.addOverlay(popup);
// display popup on hover
map.on('pointermove', function(evt) {
var feature = map.forEachFeatureAtPixel(evt.pixel,
function(feature, layer) {
return feature;
});
if (feature) {
var geometry = feature.getGeometry();
var coord = geometry.getCoordinates();
popup.setPosition(coord);
$(element).popover({
'placement': 'top',
'html': true,
'content': feature.get('name')
});
$(element).popover('show');
} else {
$(element).popover('destroy');
}
});
Thanks!
I think you just need to add some css to the #popup element you're using for the popup.
Something like:
#popup {
min-width: 280px;
}
Take a look at this example http://openlayers.org/en/master/examples/popup.html for styling ideas.
I am currently using jquery ui tooltip and using the track:true option. It works perfectly, however I dont want the tooltip to track the mouse when moving vertical only horizontal
Any idea?.
$(function () {
$(document).tooltip({
items: ".entry",
position: {
my: "right bottom+50"
},
track: true,
content: function () {
return "<div class='hi'>This is a very nice entry! It's so pretty and I feel like I can touch it. This is just random filler text.</div>";
}
});})
I added the tooltipClass property to the tooltip as follows:
$(document).tooltip({
...
tooltipClass: "tooltip-position",
});
and added the following CSS to prevent the tooltip moving when scrolling vertically:
.tooltip-position {
top: 200px !important;
}
See here for a Fiddle
Strange issue.
Using jquery ui effect like this:
<a href="in" style="position:absolute;" ><img src="images/img.png" id="perlabot" ></a>
$('#perlabot').on('mouseenter', function () {
$(this).effect("shake", { times:2, distance: 3}, 120);
});
And it works but on IE and Firefox the image keeps shaking all the time even if the mouse is right in the middle of the image. it seems that moving image trigers mouseenter event all the time??
Cannot fix this, strange issue. On chrome it trigers just once.
I didn't find a real solution to your problem but you could easily avoid it by checking if a variable has a certain value and reset it if the user leaves the area.
var active = false;
$('#perlabot').on('mouseenter', function () {
if (active === false) {
active = true;
$(this).effect("shake", {
times: 2,
distance: 3
}, 120);
}
}).mouseleave(function () {
active = false;
});
Might not be the smartest way to solve it but it works fine in every browser I tested it (Firefox, Chrome, Opera, IE 10 and 9)
jsfiddle
Try this option. Similar concept to the above answer, but I think more robust. (no global status variable for example)
function shakeIt(obj)
{
obj.mouseleave(function () {
obj.on("mouseenter", function () { shakeIt(obj); });
obj.off("mouseleave");
});
obj.off("mouseenter");
obj.effect("shake", { distance: "3", times: "2" }, 120);
}
$("#perlabot").on("mouseenter", function () { shakeIt($(this)); });
I understand that mobile safari has a lot of bugs around fixed elements, but for the most part I've managed to get my layout working correctly until I added a much needed text input to the fixed navigation at the bottom. Now when the user focuses on the text input element and the virtual keyboard appears, my navigation, which is otherwise always fixed at the bottom of the page, jumps up to a really strange spot in the middle of the page.
I'd add some of my code to this post, but I wouldn't be sure where to start. That navigation is fixed at the bottom and positioned to the left and bottom 0, and 100% width. From there, I don't know what's going on, I can only assume it's a mobile safari bug.
It also appears to lose it's position fixed and become relative, only while the text input element is focused on and the virtual keyboard is open.
http://dansajin.com/2012/12/07/fix-position-fixed/ this is one of the solutions proposed. Seems worth a shot.
In short: set fixed elements to position:absolute when any input is focused and reset them when that element is blurred
.header {
position: fixed;
}
.footer {
position: fixed;
}
.fixfixed .header,
.fixfixed .footer {
position: absolute;
}
and
if ('ontouchstart' in window) {
/* cache dom references */
var $body = $('body');
/* bind events */
$(document)
.on('focus', 'input', function() {
$body.addClass('fixfixed');
})
.on('blur', 'input', function() {
$body.removeClass('fixfixed');
});
}
The solutions on the top are some ways to go and fix the problem, but I think adding extra css class or using moderniz we are complicating things.If you want a more simple solution, here is a non-modernizr non-extra-css but pure jquery solution and work on every device and browsers I use this fix on all my projects
if ('ontouchstart' in window) {
$(document).on('focus', 'textarea,input,select', function() {
$('.navbar.navbar-fixed-top').css('position', 'absolute');
}).on('blur', 'textarea,input,select', function() {
$('.navbar.navbar-fixed-top').css('position', '');
});
}
I had a similar problem, but I found a workaround by adding the following css class to the body element on input focus and then removing it again on unfocus:
.u-oh {
overflow: hidden;
height: 100%;
width: 100%;
position: fixed;
}
Taking from what sylowgreen did, the key is to fix the body on entering the input. Thus:
$("#myInput").on("focus", function () {
$("body").css("position", "fixed");
});
$("#myInput").on("blur", function () {
$("body").css("position", "static");
});
Add javascript like this:
$(function() {
var $body;
if ('ontouchstart' in window) {
$body = $("body");
document.addEventListener('focusin', function() {
return $body.addClass("fixfixed");
});
return document.addEventListener('focusout', function() {
$body.removeClass("fixfixed");
return setTimeout(function() {
return $(window).scrollLeft(0);
}, 20);
});
}
});
and add class like this:
.fixfixed header{
position: absolute;
}
you can reference this article: http://dansajin.com/2012/12/07/fix-position-fixed/
I really like the solution above. I packaged it up into a little jQuery plugin so I could:
Set which parent gets the class
Set which elements this applies to (don't forget "textarea" and "select").
Set what the parent class name is
Allow it to be chained
Allow it to be used multiple times
Code example:
$.fn.mobileFix = function (options) {
var $parent = $(this),
$fixedElements = $(options.fixedElements);
$(document)
.on('focus', options.inputElements, function(e) {
$parent.addClass(options.addClass);
})
.on('blur', options.inputElements, function(e) {
$parent.removeClass(options.addClass);
// Fix for some scenarios where you need to start scrolling
setTimeout(function() {
$(document).scrollTop($(document).scrollTop())
}, 1);
});
return this; // Allowing chaining
};
// Only on touch devices
if (Modernizr.touch) {
$("body").mobileFix({ // Pass parent to apply to
inputElements: "input,textarea,select", // Pass activation child elements
addClass: "fixfixed" // Pass class name
});
}
I use this jQuery script:
var focus = 0;
var yourInput = $(".yourInputClass");
yourInput.focusin(function(){
if(!focus) {
yourInput.blur();
$("html, body").scrollTop($(document).height());
focus = 1;
}
if(focus) {
yourInput.focus();
focus = 0;
}
});
Works perfectly for me.
The focusin and focusout events seem to be better suited to this problem than the focus and blur events since the former bubble up to the root element. See this answer on SO.
Personally I use AngularJS, so I implemented it like this:
$window.document.body.addEventListener('focusin', function(event) {
var element = event.target;
var tagName = element.tagName.toLowerCase();
if(!$rootScope.inputOverlay && (tagName === 'input' || tagName === 'textarea' || tagName === 'select')) {
$rootScope.$apply(function() {
$rootScope.inputOverlay = true;
});
}
});
$window.document.body.addEventListener('focusout', function() {
if($rootScope.inputOverlay) {
$rootScope.$apply(function() {
$rootScope.inputOverlay = false;
});
}
});
Note: I am conditionally running this script if this is mobile Safari.
I put an ng-class attribute on my navbar:
<div class="navbar navbar-default navbar-fixed-top" ng-class="{'navbar-absolute': inputOverlay}">
using the following CSS:
.navbar-absolute {
position: absolute !important;
}
You can read more about focusin here and focusout here.
Test this one. It works. I just test it.
$(document).on('focus','input', function() {
setTimeout(function() {
$('#footer1').css('position', 'absolute');
$('#header1').css('position', 'absolute');
}, 0);
});
$(document).on('blur','input', function() {
setTimeout(function() {
$('#footer1').css('position', 'fixed');
$('#header1').css('position', 'fixed');
}, 800);
});
None of these solutions worked for me because my DOM is complicated and I have dynamic infinite scroll pages, so I had to create my own.
Background: I am using a fixed header and an element further down that sticks below it once the user scrolls that far down. This element has a search input field. In addition, I have dynamic pages added during forward and backwards scroll.
Problem: In iOS, anytime the user clicked on the input in the fixed element, the browser would scroll all the way to the top of the page. This not only caused undesired behavior, it also triggered my dynamic page add at the top of the page.
Expected Solution: No scroll in iOS (none at all) when the user clicks on the input in the sticky element.
Solution:
/*Returns a function, that, as long as it continues to be invoked, will not
be triggered. The function will be called after it stops being called for
N milliseconds. If `immediate` is passed, trigger the function on the
leading edge, instead of the trailing.*/
function debounce(func, wait, immediate) {
var timeout;
return function () {
var context = this, args = arguments;
var later = function () {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};
function is_iOS() {
var iDevices = [
'iPad Simulator',
'iPhone Simulator',
'iPod Simulator',
'iPad',
'iPhone',
'iPod'
];
while (iDevices.length) {
if (navigator.platform === iDevices.pop()) { return true; }
}
return false;
}
$(document).on("scrollstop", debounce(function () {
//console.log("Stopped scrolling!");
if (is_iOS()) {
var yScrollPos = $(document).scrollTop();
if (yScrollPos > 200) { //200 here to offset my fixed header (50px) and top banner (150px)
$('#searchBarDiv').css('position', 'absolute');
$('#searchBarDiv').css('top', yScrollPos + 50 + 'px'); //50 for fixed header
}
else {
$('#searchBarDiv').css('position', 'inherit');
}
}
},250,true));
$(document).on("scrollstart", debounce(function () {
//console.log("Started scrolling!");
if (is_iOS()) {
var yScrollPos = $(document).scrollTop();
if (yScrollPos > 200) { //200 here to offset my fixed header (50px) and top banner (150px)
$('#searchBarDiv').css('position', 'fixed');
$('#searchBarDiv').css('width', '100%');
$('#searchBarDiv').css('top', '50px'); //50 for fixed header
}
}
},250,true));
Requirements: JQuery mobile is required for the startsroll and stopscroll functions to work.
Debounce is included to smooth out any lag created by the sticky element.
Tested in iOS10.
I wasn't having any luck with the solution proposed by Dan Sajin. Perhaps the bug has changed since he wrote that blog post, but on iOS 7.1, the bug will always surface when the position is changed back to fixed after the input is blurred, even if you delay until the software keyboard is hidden completely. The solution I came to involves waiting for a touchstart event rather than the blur event since the fixed element always snaps back into proper position when the page is scrolled.
if (Modernizr.touch) {
var $el, focused;
$el = $('body');
focused = false;
$(document).on('focus', 'input, textarea, select', function() {
focused = true;
$el.addClass('u-fixedFix');
}).on('touchstart', 'input, textarea, select', function() {
// always execute this function after the `focus` handler:
setTimeout(function() {
if (focused) {
return $el.removeClass('u-fixedFix');
}
}, 1);
});
}
HTH