My website is equipped with a mobile stylesheet:
<link rel="stylesheet" href="css/mobile.css" media="handheld">
In addition to that, I am utilizing jQuery to customize functionality for mobile devices.
I am wondering if there is a method to enforce landscape-only orientation and prevent auto-rotation. Is there a possible solution using CSS or jQuery?
Any insights would be much appreciated!
Utilize media queries to determine the device orientation. In the portrait stylesheet, hide all elements and display a message indicating that the application is only functional in landscape mode.
<link rel="stylesheet" type="text/css" href="css/style_l.css" media="screen and (orientation: landscape)">
<link rel="stylesheet" type="text/css" href="css/style_p.css" media="screen and (orientation: portrait)">
This method seems to be the most effective.
While you can't directly force orientation on a web page, there are ways to suggest or block content in portrait mode.
I have created an adaptation based on an existing script.
To implement this in your HTML file, simply add a div element:
<div id="block_land">Turn your device in landscape mode.</div>
Adjust your CSS to cover the entire page:
#block_land{position:absolute; top:0; left:0; text-align:center; background:white; width:100%; height:100%; display:none;}
Next, include some JavaScript to detect the orientation:
function testOrientation() {
document.getElementById('block_land').style.display = (screen.width>screen.height) ? 'none' : 'block';
}
Make sure to test the orientation on both onload and onorientationchange events, possibly within your body tag:
<body onorientationchange="testOrientation();" onload="testOrientation();">
Let me know if this solution proves effective for your needs.
My suggestion is to utilize a script that automatically adjusts the display based on user interaction. I have customized this script to rotate the main DIV of your page when in portrait mode, prompting users to switch unless they prefer to tilt their head sideways:
<script type="text/javascript">
(function () {
detectPortrait();
$(window).resize(function() {
detectPortrait("#mainView");
});
function detectPortrait(mainDiv) {
if (screen.width < screen.height) {
$(mainDiv).addClass("portrait_mode");
}
else {
$(mainDiv).removeClass("portrait_mode");
}
}
})();
</script>
<style type="text/css">
.portrait_mode {
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
-o-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg);
}
</style>
If you're looking for a quick way to force your website into landscape orientation, consider adjusting the min-max width in your CSS. Check out this snippet:
@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) and (orientation:portrait) {
body {
-webkit-transform: rotate(90deg);
width: 100%;
height: 100%;
overflow: hidden;
position: absolute;
top: 0;
left: 0;
}}
This should help resolve your issue!
To prompt the user to change orientation and hide the screen, you can implement a code that senses the orientation change and reloads the page automatically. Make sure to insert the following script at the end of your webpage's template or in the footer section:
This notification is meant for users to rotate their device, hiding content in portrait mode. Ensure that ".content" is the correct selector on your webpage.
if(screen.availHeight > screen.availWidth){
jQuery( ".content" ).css( "display", "none" );
var newLine = "\r\n"
var msg = "Please use Landscape!"
msg += newLine;
msg += "(Turn your phone 90 degrees)";
msg += newLine;
msg += "and wait a seconds,";
msg += newLine;
msg += "for the page to reload.";
alert(msg);
}
Upon rotation of the device, this code will trigger a page reload to reveal the hidden content.
jQuery(window).on("orientationchange",function(){
location.reload();
});
I experimented with the code below, which successfully prompted the browser to switch to portrait mode:
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0" />
This piece of code has undergone testing on both an iPhone and a different mobile device.
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