Related
I'm trying to animate two images from a fixed position to side-do-side, using transition and transform/translation code.
It works right on Firefox / Chrome but on WebKit devices like iPhone and Safari it acts oddly. Basically the animation ends on the right place, but the transition don't.
.anim div{
transition: ease all 1s;
}
.anim div.transformed.a{
transform: translate(150%, -11%);
}
.anim div.transformed.b {
transform: translate(50%, -110%);
}
Here's a demo:
https://jsfiddle.net/0o8L1jg2/1/
On Safari the image goes all the away across and then suddenly sticks to the final position (which happens to be right). Any way to make the transition acts correctly on here?
Add the webkit prefix for webkit devices.
.anim div{
transition: ease all 1s;
-webkit-transition: ease all 1s;
}
.anim div.transformed.a{
transform: translate(150%, -11%);
-webkit-transform: translate(150%, -11%);
}
.anim div.transformed.b {
transform: translate(50%, -110%);
-webkit-transform: translate(50%, -110%);
}
Is there any way to disable that?
I only mean in the browser... When you click a link or a button or a div that has a click function on it, it flickers a grey box where you clicked quickly. How do i prevent this?
You could set a transparent color to the -webkit-tap-highlight-color property of that element.
a {
-webkit-tap-highlight-color: transparent;
}
Using mobile Safari in Phonegap, only this worked:
* { -webkit-backface-visibility: hidden;
-webkit-tap-highlight-color: transparent;
}
Source: iPhone WebKit CSS animations cause flicker
Also, on the main panel, enable rendering:
div.myPanelOrWhatever
{
-webkit-transform: translate3d(0, 0, 0)
}
Source: Prevent flicker on webkit-transition of webkit-transform
I've been trying to test my jquery mobile app on multiple devices. I currently have a panel that is opened via swipe or clicking on a 'menu' button.
However, on wide screens, the app just looks funky. WAY too wide. I understand this is meant for mobile, but, why not format it for ipads/surface/androids as well?
To do this, I'd like to shorten the width by requiring the panel to be open at all times when the width exceeds a specific value.
I've dug through the documentation, and the closest thing I found was:
class="ui-responsive-panel" from the following link: http://view.jquerymobile.com/master/docs/widgets/panels/panel-fixed.php
After adding it to my page header, I noticed that I can't 'swipe' the menu away when the window is wide. When I shrink the window (either on a pc browser, or by rotating the device), it can be swiped.
Is anyone familiar with this, and willing to shed some light?
I'm facing the same problem. I want the panel to stay open when the user turns the device in landscape mode (tablets) or if the window is wider than a specific width at the very beginning.
Unfortunately I did not find any solutions and the jQuery Mobilele example for responsive panels in this case.
So I found a way by using some javascript but I'm not happy with this solutions since a pure CSS solution with media queries would be nicer.
However, here is my "workaround" solution.
<script type="text/javascript">
window.onresize = function (event) {
if (window.innerWidth > 800) {
window.setTimeout(openPanel, 1);
}
if (window.innerWidth < 800) {
window.setTimeout(closePanel, 1);
}
};
function closePanel() {
$("#mypanel").panel("close");
}
function openPanel() {
$("#mypanel").panel("open");
}
$( "#mypanel" ).on( "panelcreate", function( event, ui ) {
if (window.innerWidth > 800) {
openPanel();
}
if (window.innerWidth < 800) {
closePanel();
}
});
</script>
So if the window inner width is higher than 800, the panel opens; if it is lower than 800 it closes. Furthermore the window.onresize function is required to provide the same functionality in case the user turns the device from portrait mode to landscape mode.
Hope it helped. But I'm still looking for a better solution ;)
I found a css-only solution for that issue that is much simpler.
In the media query for your responsive panel #media (min-width:55em){...} add/overwrite the following css classes:
.ui-panel-closed { width: 17em; }
.ui-panel-content-wrap.ui-body-c.ui-panel-animate.ui-panel-content-wrap-closed{ margin-left:17em; }
The second class might be different to yours depending on the swatch you are using; in this case it is "C". However, just take the content wrap class that wraps all your header,content, footer area.
In my example I used a panel with data-display="reveal" data-position="left" If you want it appearing on the right hand side just change margin-left:17em to margin-right:17em
If you want the panel to behave like "overlay", just forget about the second class i posted...
Best regards
I am facing the problem right now and I found the solution of mJay really useful. However it would be great to use media queries instead, something like this perhaps:
#media (min-width:35em){
.ui-panel{
width:30em;
}
.ui-panel-close { width:30em; }
}
Below is my "CSS" solution. What you need to know: mnuMenu is the id of the panel that I want to always have visible on the left side of the screen and lnkMenu is the id of the a tag for the button which normally shows the panel on smaller screen widths.
#media all and (min-width: 900px)
{
#mnuMenu
{
visibility: visible;
position: fixed;
left: 0;
float: left;
width: 300px;
height: 100vh;
background: none;
-webkit-transition: none !important;
-moz-transition: none !important;
transition: none !important;
-webkit-transform: none !important;
-moz-transform: none !important;
transform: none !important;
-webkit-box-shadow: none;
-moz-box-shadow: none;
box-shadow: none;
}
#lnkMenu
{
display: none;
}
.ui-content
{
margin-left: 325px;
}
}
I'm working on a browser based app, currently I'm developing and styling for the ipad safari browser.
I'm looking for two things on the ipad: How can I disable vertical scrolling for pages that don't require it? & how can I disable the elastic bounce effect?
This answer is no longer applicable, unless you are developing for a very old iOS device... Please see other solutions
2011 answer: For a web/html app running inside iOS Safari you want something like
document.ontouchmove = function(event){
event.preventDefault();
}
For iOS 5 you may want to take the following into account: document.ontouchmove and scrolling on iOS 5
Update September 2014:
A more thorough approach can be found here: https://github.com/luster-io/prevent-overscroll. For that and a whole lot of useful webapp advice, see http://www.luster.io/blog/9-29-14-mobile-web-checklist.html
Update March 2016: That last link is no longer active - see https://web.archive.org/web/20151103001838/http://www.luster.io/blog/9-29-14-mobile-web-checklist.html for the archived version instead. Thanks #falsarella for pointing that out.
You can also change the position of the body/html to fixed:
body,
html {
position: fixed;
}
To prevent scrolling on modern mobile browsers you need to add the passive: false. I had been pulling my hair out getting this to work until I found this solution. I have only found this mentioned in one other place on the internet.
function preventDefault(e){
e.preventDefault();
}
function disableScroll(){
document.body.addEventListener('touchmove', preventDefault, { passive: false });
}
function enableScroll(){
document.body.removeEventListener('touchmove', preventDefault);
}
You can use this jQuery code snippet to do this:
$(document).bind(
'touchmove',
function(e) {
e.preventDefault();
}
);
This will block the vertical scrolling and also any bounce back effect occurring on your pages.
overflow: scroll;
-webkit-overflow-scrolling: touch;
On container you can set bounce effect inside element
Source: http://www.kylejlarson.com/blog/2011/fixed-elements-and-scrolling-divs-in-ios-5/
I know this is slightly off-piste but I've been using Swiffy to convert Flash into an interactive HTML5 game and came across the same scrolling issue but found no solutions that worked.
The problem I had was that the Swiffy stage was taking up the whole screen, so as soon as it had loaded, the document touchmove event was never triggered.
If I tried to add the same event to the Swiffy container, it was replaced as soon as the stage had loaded.
In the end I solved it (rather messily) by applying the touchmove event to every DIV within the stage. As these divs were also ever-changing, I needed to keep checking them.
This was my solution, which seems to work well. I hope it's helpful for anyone else trying to find the same solution as me.
var divInterval = setInterval(updateDivs,50);
function updateDivs(){
$("#swiffycontainer > div").bind(
'touchmove',
function(e) {
e.preventDefault();
}
);}
Code to To remove ipad safari: disable scrolling, and bounce effect
document.addEventListener("touchmove", function (e) {
e.preventDefault();
}, { passive: false });
If you have canvas tag inside document, sometime it will affect the usability of object inside Canvas(example: movement of object); so add below code to fix it.
document.getElementById("canvasId").addEventListener("touchmove", function (e) {
e.stopPropagation();
}, { passive: false });
none of the solutions works for me. This is how I do it.
html,body {
position: fixed;
overflow: hidden;
}
.the_element_that_you_want_to_have_scrolling{
-webkit-overflow-scrolling: touch;
}
Try this JS sollutuion:
var xStart, yStart = 0;
document.addEventListener('touchstart', function(e) {
xStart = e.touches[0].screenX;
yStart = e.touches[0].screenY;
});
document.addEventListener('touchmove', function(e) {
var xMovement = Math.abs(e.touches[0].screenX - xStart);
var yMovement = Math.abs(e.touches[0].screenY - yStart);
if((yMovement * 3) > xMovement) {
e.preventDefault();
}
});
Prevents default Safari scrolling and bounce gestures without detaching your touch event listeners.
Tested in iphone. Just use this css on target element container and it will change the scrolling behaviour, which stops when finger leaves the screen.
-webkit-overflow-scrolling: auto
https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-overflow-scrolling
improved answer #Ben Bos and commented by #Tim
This css will help prevent scrolling and performance issue with css re-render because position changed / little lagging without width and height
html,
body {
position: fixed;
width: 100%;
height: 100%
}
For those who are using MyScript the Web App and are struggling with the body scrolling/dragging (on iPad and Tablets) instead of actually writing:
<body touch-action="none" unresolved>
That fixed it for me.
You can use js for prevent scroll:
let body = document.body;
let hideScroll = function(e) {
e.preventDefault();
};
function toggleScroll (bool) {
if (bool === true) {
body.addEventListener("touchmove", hideScroll);
} else {
body.removeEventListener("touchmove", hideScroll);
}
}
And than just run/stop toggleScroll func when you opnen/close modal.
Like this toggleScroll(true) / toggleScroll(false)
(This is only for iOS, on Android not working)
Try this JS solution that toggles webkitOverflowScrolling style. The trick here is that this style is off, mobile Safari goes to ordinary scrolling and prevents over-bounce — alas, it is not able to cancel ongoing drag. This complex solution also tracks onscroll as bounce over the top makes scrollTop negative that may be tracked. This solution was tested on iOS 12.1.1 and has single drawback: while accelerating the scroll single over-bounce still happens as resetting the style may not cancel it immediately.
function preventScrollVerticalBounceEffect(container) {
setTouchScroll(true) //!: enable before the first scroll attempt
container.addEventListener("touchstart", onTouchStart)
container.addEventListener("touchmove", onTouch, { passive: false })
container.addEventListener("touchend", onTouchEnd)
container.addEventListener("scroll", onScroll)
function isTouchScroll() {
return !!container.style.webkitOverflowScrolling
}
let prevScrollTop = 0, prevTouchY, opid = 0
function setTouchScroll(on) {
container.style.webkitOverflowScrolling = on ? "touch" : null
//Hint: auto-enabling after a small pause makes the start
// smoothly accelerated as required. After the pause the
// scroll position is settled, and there is no delta to
// make over-bounce by dragging the finger. But still,
// accelerated content makes short single over-bounce
// as acceleration may not be off instantly.
const xopid = ++opid
!on && setTimeout(() => (xopid === opid) && setTouchScroll(true), 250)
if(!on && container.scrollTop < 16)
container.scrollTop = 0
prevScrollTop = container.scrollTop
}
function isBounceOverTop() {
const dY = container.scrollTop - prevScrollTop
return dY < 0 && container.scrollTop < 16
}
function isBounceOverBottom(touchY) {
const dY = touchY - prevTouchY
//Hint: trying to bounce over the bottom, the finger moves
// up the screen, thus Y becomes smaller. We prevent this.
return dY < 0 && container.scrollHeight - 16 <=
container.scrollTop + container.offsetHeight
}
function onTouchStart(e) {
prevTouchY = e.touches[0].pageY
}
function onTouch(e) {
const touchY = e.touches[0].pageY
if(isBounceOverBottom(touchY)) {
if(isTouchScroll())
setTouchScroll(false)
e.preventDefault()
}
prevTouchY = touchY
}
function onTouchEnd() {
prevTouchY = undefined
}
function onScroll() {
if(isTouchScroll() && isBounceOverTop()) {
setTouchScroll(false)
}
}
}
Consider the following architecture:
<body> <div id="root"></div> </body>
this css will work:
#root { position: fixed; height: 100%; overflow: auto; }
For those of you who don't want to get rid of the bouncing but just to know when it stops (for example to start some calculation of screen distances), you can do the following (container is the overflowing container element):
const isBouncing = this.container.scrollTop < 0 ||
this.container.scrollTop + this.container.offsetHeight >
this.container.scrollHeight
Disable safari bounce scrolling effect:
html,
body {
height: 100%;
width: 100%;
overflow: auto;
position: fixed;
}
I had an issue with grabbing the html element in the background, when a menu with scroll was open and either at the top or at the bottom at the scroll height. I tried lots of things. Setting html position to fixed was the closest I got to lock the screen, but in the PWA it resulted in a white area at the bottom, that I couldn't fix.
Finally I've found a solution, that worked for me 🎉:
html {
width: 100%;
height: 100%;
overflow: hidden;
}
body {
margin: 0;
height: calc(100vh - 1px)
overflow: hidden;
background-color: 'Whatever color you need to hide the 1px at the bottom'
}
Because it only seems to be an issue on iOS, I have targeted the devices from iPhone X to 12 Pro Max:
body {
margin: 0;
overflow: hidden;
background-color: '#TIP: You can use the color picker from the inspector';
#media only screen and (min-width: 375px) and (max-height: 926px) and (-webkit-device-pixel-ratio: 3) {
height: calc(100vh - 1px);
}
}
This is preventing any kind of scroll, touch or grab in the html or body elements, and scroll is still working in the menu or where else specified. Cheers.
body {
touch-action:none;
}
Using JQuery
// Disable
$("body").css({ "touch-action": "none" })
// Enable
$("body").css({ "touch-action": "auto" })
css overscroll-behavior is now supported in iOS 16. If you are targeting > iOS 16 devices, to prevent elastic bounce effect, add the following CSS to the html root
html {
overscroll-behavior: none;
}
Please note, the solution provided only disables elastic bounce effect when content is larger than viewport.
If you also want to completely disable scrolling in main page on iOS devices, use
html body {
overflow: hidden;
}
Similar to angry kiwi I got it to work using height rather than position:
html,body {
height: 100%;
overflow: hidden;
}
.the_element_that_you_want_to_have_scrolling{
-webkit-overflow-scrolling: touch;
}
Solution tested, works on iOS 12.x
This is problem I was encountering :
<body> <!-- the whole body can be scroll vertically -->
<article>
<my_gallery> <!-- some picture gallery, can be scroll horizontally -->
</my_gallery>
</article>
</body>
While I scrolling my gallery, the body always scrolling itself (human swipe aren't really horizontal), that makes my gallery useless.
Here's what I did while my gallery start scrolling
var html=jQuery('html');
html.css('overflow-y', 'hidden');
//above code works on mobile Chrome/Edge/Firefox
document.ontouchmove=function(e){e.preventDefault();} //Add this only for mobile Safari
And when my gallery end its scrolling...
var html=jQuery('html');
html.css('overflow-y', 'scroll');
document.ontouchmove=function(e){return true;}
Hope this helps~
I'm building a iPhone Web Application and want to lock the orientation to portrait mode. is this possible? Are there any web-kit extensions to do this?
Please note this is an application written in HTML and JavaScript for Mobile Safari, it is NOT a native application written in Objective-C.
This is a pretty hacky solution, but it's at least something(?). The idea is to use a CSS transform to rotate the contents of your page to quasi-portrait mode. Here's JavaScript (expressed in jQuery) code to get you started:
$(document).ready(function () {
function reorient(e) {
var portrait = (window.orientation % 180 == 0);
$("body > div").css("-webkit-transform", !portrait ? "rotate(-90deg)" : "");
}
window.onorientationchange = reorient;
window.setTimeout(reorient, 0);
});
The code expects the entire contents of your page to live inside a div just inside the body element. It rotates that div 90 degrees in landscape mode - back to portrait.
Left as an exercise to the reader: the div rotates around its centerpoint, so its position will probably need to be adjusted unless it's perfectly square.
Also, there's an unappealing visual problem. When you change orientation, Safari rotates slowly, then the top-level div snaps to 90degrees different. For even more fun, add
body > div { -webkit-transition: all 1s ease-in-out; }
to your CSS. When the device rotates, then Safari does, then the content of your page does. Beguiling!
You can specify CSS styles based on viewport orientation:
Target the browser with body[orient="landscape"] or body[orient="portrait"]
http://www.evotech.net/blog/2007/07/web-development-for-the-iphone/
However...
Apple's approach to this issue is to allow the developer to change the CSS based on the orientation change but not to prevent re-orientation completely. I found a similar question elsewhere:
http://ask.metafilter.com/99784/How-can-I-lock-iPhone-orientation-in-Mobile-Safari
The following code was used in our html5 game.
$(document).ready(function () {
$(window)
.bind('orientationchange', function(){
if (window.orientation % 180 == 0){
$(document.body).css("-webkit-transform-origin", "")
.css("-webkit-transform", "");
}
else {
if ( window.orientation > 0) { //clockwise
$(document.body).css("-webkit-transform-origin", "200px 190px")
.css("-webkit-transform", "rotate(-90deg)");
}
else {
$(document.body).css("-webkit-transform-origin", "280px 190px")
.css("-webkit-transform", "rotate(90deg)");
}
}
})
.trigger('orientationchange');
});
I came up with this CSS only method of rotating the screen using media queries. The queries are based on screen sizes that I found here. 480px seemed to be a good as no/few devices had more than 480px width or less than 480px height.
#media (max-height: 480px) and (min-width: 480px) and (max-width: 600px) {
html{
-webkit-transform: rotate(-90deg);
-moz-transform: rotate(-90deg);
-ms-transform: rotate(-90deg);
-o-transform: rotate(-90deg);
transform: rotate(-90deg);
-webkit-transform-origin: left top;
-moz-transform-origin: left top;
-ms-transform-origin: left top;
-o-transform-origin: left top;
transform-origin: left top;
width: 320px; /*this is the iPhone screen width.*/
position: absolute;
top: 100%;
left: 0
}
}
Screen.lockOrientation() solves this problem, though support is less than universal at the time (April 2017):
https://www.w3.org/TR/screen-orientation/
https://developer.mozilla.org/en-US/docs/Web/API/Screen.lockOrientation
I like the idea of telling the user to put his phone back into portrait mode.
Like it's mentioned here: http://tech.sarathdr.com/featured/prevent-landscape-orientation-of-iphone-web-apps/
...but utilising CSS instead of JavaScript.
Maybe in a new future it will have an out-of-the-box soludion...
As for May 2015,
there is an experimental functionality that does that.
But it only works on Firefox 18+, IE11+, and Chrome 38+.
However, it does not work on Opera or Safari yet.
https://developer.mozilla.org/en-US/docs/Web/API/Screen/lockOrientation#Browser_compatibility
Here is the current code for the compatible browsers:
var lockOrientation = screen.lockOrientation || screen.mozLockOrientation || screen.msLockOrientation;
lockOrientation("landscape-primary");
While you cannot prevent orientation change from taking effect you can emulate no change as stated in other answers.
First detect device orientation or reorientation and, using JavaScript, add a class name to your wrapping element (in this example I use the body tag).
function deviceOrientation() {
var body = document.body;
switch(window.orientation) {
case 90:
body.classList = '';
body.classList.add('rotation90');
break;
case -90:
body.classList = '';
body.classList.add('rotation-90');
break;
default:
body.classList = '';
body.classList.add('portrait');
break;
}
}
window.addEventListener('orientationchange', deviceOrientation);
deviceOrientation();
Then if the device is landscape, use CSS to set the body width to the viewport height and the body height to the viewport width. And let’s set the transform origin while we’re at it.
#media screen and (orientation: landscape) {
body {
width: 100vh;
height: 100vw;
transform-origin: 0 0;
}
}
Now, reorient the body element and slide (translate) it into position.
body.rotation-90 {
transform: rotate(90deg) translateY(-100%);
}
body.rotation90 {
transform: rotate(-90deg) translateX(-100%);
}
// CSS hack to prevent layout breaking in landscape
// e.g. screens larger than 320px
html {
width: 320px;
overflow-x: hidden;
}
This, or a similar CSS solution, will at least preserve your layout if that is what you are after.
The root solution is accounting for device's capabilities rather than attempting to limit them. If the device doesn't allow you the appropriate limitation than a simple hack is your best bet since the design is essentially incomplete. The simpler the better.
In coffee if anyone needs it.
$(window).bind 'orientationchange', ->
if window.orientation % 180 == 0
$(document.body).css
"-webkit-transform-origin" : ''
"-webkit-transform" : ''
else
if window.orientation > 0
$(document.body).css
"-webkit-transform-origin" : "200px 190px"
"-webkit-transform" : "rotate(-90deg)"
else
$(document.body).css
"-webkit-transform-origin" : "280px 190px"
"-webkit-transform" : "rotate(90deg)"
Inspired from #Grumdrig's answer, and because some of the used instructions would not work, I suggest the following script if needed by someone else:
$(document).ready(function () {
function reorient(e) {
var orientation = window.screen.orientation.type;
$("body > div").css("-webkit-transform", (orientation == 'landscape-primary' || orientation == 'landscape-secondary') ? "rotate(-90deg)" : "");
}
$(window).on("orientationchange",function(){
reorient();
});
window.setTimeout(reorient, 0);
});
I have a similar issue, but to make landscape... I believe the code below should do the trick:
//This code consider you are using the fullscreen portrait mode
function processOrientation(forceOrientation) {
var orientation = window.orientation;
if (forceOrientation != undefined)
orientation = forceOrientation;
var domElement = document.getElementById('fullscreen-element-div');
switch(orientation) {
case 90:
var width = window.innerHeight;
var height = window.innerWidth;
domElement.style.width = "100vh";
domElement.style.height = "100vw";
domElement.style.transformOrigin="50% 50%";
domElement.style.transform="translate("+(window.innerWidth/2-width/2)+"px, "+(window.innerHeight/2-height/2)+"px) rotate(-90deg)";
break;
case -90:
var width = window.innerHeight;
var height = window.innerWidth;
domElement.style.width = "100vh";
domElement.style.height = "100vw";
domElement.style.transformOrigin="50% 50%";
domElement.style.transform="translate("+(window.innerWidth/2-width/2)+"px, "+(window.innerHeight/2-height/2)+"px) rotate(90deg)";
break;
default:
domElement.style.width = "100vw";
domElement.style.height = "100vh";
domElement.style.transformOrigin="";
domElement.style.transform="";
break;
}
}
window.addEventListener('orientationchange', processOrientation);
processOrientation();
<html>
<head></head>
<body style="margin:0;padding:0;overflow: hidden;">
<div id="fullscreen-element-div" style="background-color:#00ff00;width:100vw;height:100vh;margin:0;padding:0"> Test
<br>
<input type="button" value="force 90" onclick="processOrientation(90);" /><br>
<input type="button" value="force -90" onclick="processOrientation(-90);" /><br>
<input type="button" value="back to normal" onclick="processOrientation();" />
</div>
</body>
</html>
Click here for a tutorial and working example from my website.
You no longer need to use hacks just to look jQuery Mobile Screen Orientation nor should you use PhoneGap anymore, unless you're actually using PhoneGap.
To make this work in the year 2015 we need:
Cordova (any version though anything above 4.0 is better)
PhoneGap (you can even use PhoneGap, plugins are compatible)
And one of these plugins depending on your Cordova version:
net.yoik.cordova.plugins.screenorientation (Cordova < 4)
cordova plugin add net.yoik.cordova.plugins.screenorientation
cordova plugin add cordova-plugin-screen-orientation (Cordova >= 4)
cordova plugin add cordova-plugin-screen-orientation
And to lock screen orientation just use this function:
screen.lockOrientation('landscape');
To unlock it:
screen.unlockOrientation();
Possible orientations:
portrait-primary The orientation is in the primary portrait mode.
portrait-secondary The orientation is in the secondary portrait mode.
landscape-primary The orientation is in the primary landscape mode.
landscape-secondary The orientation is in the secondary landscape mode.
portrait The orientation is either portrait-primary or portrait-secondary (sensor).
landscape The orientation is either landscape-primary or landscape-secondary (sensor).