amp-web-push-widget button.amp-subscribe { display: inline-flex; align-items: center; border-radius: 5px; border: 0; box-sizing: border-box; margin: 0; padding: 10px 15px; cursor: pointer; outline: none; font-size: 15px; font-weight: 500; background: #4A90E2; margin-top: 7px; color: white; box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.5); -webkit-tap-highlight-color: rgba(0, 0, 0, 0); } /** * Jetpack related posts */ /** * The Gutenberg block */ .jp-related-posts-i2 { margin-top: 1.5rem; } .jp-related-posts-i2__list { --hgap: 1rem; display: flex; flex-wrap: wrap; column-gap: var(--hgap); row-gap: 2rem; margin: 0; padding: 0; list-style-type: none; } .jp-related-posts-i2__post { display: flex; flex-direction: column; /* Default: 2 items by row */ flex-basis: calc(( 100% - var(--hgap) ) / 2); } /* Quantity qeuries: see https://alistapart.com/article/quantity-queries-for-css/ */ .jp-related-posts-i2__post:nth-last-child(n+3):first-child, .jp-related-posts-i2__post:nth-last-child(n+3):first-child ~ * { /* From 3 total items on, 3 items by row */ flex-basis: calc(( 100% - var(--hgap) * 2 ) / 3); } .jp-related-posts-i2__post:nth-last-child(4):first-child, .jp-related-posts-i2__post:nth-last-child(4):first-child ~ * { /* Exception for 4 total items: 2 items by row */ flex-basis: calc(( 100% - var(--hgap) ) / 2); } .jp-related-posts-i2__post-link { display: flex; flex-direction: column; row-gap: 0.5rem; width: 100%; margin-bottom: 1rem; line-height: 1.2; } .jp-related-posts-i2__post-link:focus-visible { outline-offset: 2px; } .jp-related-posts-i2__post-img { order: -1; max-width: 100%; } .jp-related-posts-i2__post-defs { margin: 0; list-style-type: unset; } /* Hide, except from screen readers */ .jp-related-posts-i2__post-defs dt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; } .jp-related-posts-i2__post-defs dd { margin: 0; } /* List view */ .jp-relatedposts-i2[data-layout="list"] .jp-related-posts-i2__list { display: block; } .jp-relatedposts-i2[data-layout="list"] .jp-related-posts-i2__post { margin-bottom: 2rem; } /* Breakpoints */ @media only screen and (max-width: 640px) { .jp-related-posts-i2__list { display: block; } .jp-related-posts-i2__post { margin-bottom: 2rem; } } /* Container */ #jp-relatedposts { display: none; padding-top: 1em; margin: 1em 0; position: relative; clear: both; } .jp-relatedposts::after { content: ""; display: block; clear: both; } /* Headline above related posts section, labeled "Related" */ #jp-relatedposts h3.jp-relatedposts-headline { margin: 0 0 1em 0; display: inline-block; float: left; font-size: 9pt; font-weight: 700; font-family: inherit; } #jp-relatedposts h3.jp-relatedposts-headline em::before { content: ""; display: block; width: 100%; min-width: 30px; border-top: 1px solid rgba(0, 0, 0, 0.2); margin-bottom: 1em; } #jp-relatedposts h3.jp-relatedposts-headline em { font-style: normal; font-weight: 700; } /* Related posts items (wrapping items) */ #jp-relatedposts .jp-relatedposts-items { clear: left; } #jp-relatedposts .jp-relatedposts-items-visual { margin-right: -20px; } /* Related posts item */ #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post { float: left; width: 33%; margin: 0 0 1em; /* Needs to be same as the main outer wrapper for Related Posts */ box-sizing: border-box; } #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post { padding-right: 20px; filter: alpha(opacity=80); -moz-opacity: 0.8; opacity: 0.8; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post:nth-child(3n+4), #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post:nth-child(3n+4) { clear: both; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post:hover .jp-relatedposts-post-title a { text-decoration: underline; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post:hover { filter: alpha(opacity=100); -moz-opacity: 1; opacity: 1; } /* Related posts item content */ #jp-relatedposts .jp-relatedposts-items-visual h4.jp-relatedposts-post-title, #jp-relatedposts .jp-relatedposts-items p, #jp-relatedposts .jp-relatedposts-items time { font-size: 14px; line-height: 20px; margin: 0; } #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post-nothumbs { position: relative; } #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post-nothumbs a.jp-relatedposts-post-aoverlay { position: absolute; top: 0; bottom: 0; left: 0; right: 0; display: block; border-bottom: 0; } #jp-relatedposts .jp-relatedposts-items p, #jp-relatedposts .jp-relatedposts-items time { margin-bottom: 0; } #jp-relatedposts .jp-relatedposts-items-visual h4.jp-relatedposts-post-title { text-transform: none; margin: 0; font-family: inherit; display: block; max-width: 100%; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post .jp-relatedposts-post-title a { font-size: inherit; font-weight: 400; text-decoration: none; filter: alpha(opacity=100); -moz-opacity: 1; opacity: 1; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post .jp-relatedposts-post-title a:hover { text-decoration: underline; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post img.jp-relatedposts-post-img, #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post span { display: block; max-width: 90%; overflow: hidden; text-overflow: ellipsis; } #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post img.jp-relatedposts-post-img, #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post span { height: auto; max-width: 100%; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post .jp-relatedposts-post-date, #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post .jp-relatedposts-post-context { opacity: 0.6; } /* Hide the date by default, but leave the element there if * a theme wants to use css to make it visible. */ .jp-relatedposts-items .jp-relatedposts-post .jp-relatedposts-post-date { display: none; } /* Behavior when there are thumbnails in visual mode */ #jp-relatedposts .jp-relatedposts-items-visual div.jp-relatedposts-post-thumbs p.jp-relatedposts-post-excerpt { display: none; } /* Behavior when there are no thumbnails in visual mode */ #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post-nothumbs p.jp-relatedposts-post-excerpt { overflow: hidden; } #jp-relatedposts .jp-relatedposts-items-visual .jp-relatedposts-post-nothumbs span { margin-bottom: 1em; } /* List Layout */ #jp-relatedposts .jp-relatedposts-list .jp-relatedposts-post { clear: both; width: 100%; } #jp-relatedposts .jp-relatedposts-list .jp-relatedposts-post img.jp-relatedposts-post-img { float: left; overflow: hidden; max-width: 33%; margin-right: 3%; } #jp-relatedposts .jp-relatedposts-list h4.jp-relatedposts-post-title { display: inline-block; max-width: 63%; } /* * Responsive */ @media only screen and (max-width: 640px) { #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post { width: 50%; } #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post:nth-child(3n) { clear: left; } #jp-relatedposts .jp-relatedposts-items-visual { margin-right: 20px; } } @media only screen and (max-width: 320px) { #jp-relatedposts .jp-relatedposts-items .jp-relatedposts-post { width: 100%; clear: both; margin: 0 0 1em; } #jp-relatedposts .jp-relatedposts-list .jp-relatedposts-post img.jp-relatedposts-post-img, #jp-relatedposts .jp-relatedposts-list h4.jp-relatedposts-post-title { float: none; max-width: 100%; margin-right: 0; } } /* * Hide the related post section in the print view of a post */ @media print { .jp-relatedposts { display: none ; } } .wp-block-jetpack-rating-star span:not([aria-hidden="true"]) { display: none; } .amp-logo amp-img{width:190px} .amp-menu input{display:none;}.amp-menu li.menu-item-has-children ul{display:none;}.amp-menu li{position:relative;display:block;}.amp-menu > li a{display:block;}
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Shravan Kumar Kasagoni

Get Image Data URL using JavaScript

It is very simple with HTML5 Canvas API, it provides toDataURL() method. The toDataURL() method of the canvas object converts the canvas drawing into a 64 bit encoded PNG URL. We can pass “image/jpeg” as argument to toDataURL() method, to get image data URL in the jpeg format. Here is the code snippet which explains it: Dealing with cross domain images: The toDataURL() method requires that any images drawn onto the canvas should be on the same domain as the code executing it.  Otherwise a SECURITY_ERR exception is thrown. To use toDataURL() method when image is drawn on the canvas loaded from different domain, then we need to set the crossOrigin property of Image object, crossOrigin property of Image object allows two values (anonymous, use-credentials). More information on CORS enabled image @ Mozilla DEV Network.

It is very simple with HTML5 Canvas API, it provides toDataURL() method. The toDataURL() method of the canvas object converts the canvas drawing into a 64 bit encoded PNG URL. We can pass “image/jpeg” as argument to toDataURL() method, to get image data URL in the jpeg format.

Here is the code snippet which explains it:


<!DOCTYPE HTML>
<html>
<head>
  <title>Get Image Data URL using JavaScript</title>
</head>
<body>
  <script>
      var image = new Image();

      // create an empty canvas element
      var canvas = document.createElement("canvas"),
          canvasContext = canvas.getContext("2d");

      image.onload = function () {
        
        //Set canvas size is same as the picture
        canvas.width = image.width;
        canvas.height = image.height;
     
        // draw image into canvas element
        canvasContext.drawImage(image, 0, 0, image.width, image.height);
     
        // get canvas contents as a data URL (returns png format by default)
        var dataURL = canvas.toDataURL();

        document.write(dataURL);
      };

      image.src = "azure.png";
      
    </script>
</body>
</html>

Dealing with cross domain images:

The toDataURL() method requires that any images drawn onto the canvas should be on the same domain as the code executing it.  Otherwise a SECURITY_ERR exception is thrown.

To use toDataURL() method when image is drawn on the canvas loaded from different domain, then we need to set the crossOrigin property of Image object, crossOrigin property of Image object allows two values (anonymous, use-credentials).


var image = new Image();

image.crossOrigin = 'use-credentials';

image.onload = function () {
    //.....
}

image.src = "http://www.w3.org/2008/site/images/logo-w3c-screen-lg";

//(or)

var image = new Image();

image.crossOrigin = 'anonymous';

image.onload = function () {
    //.....
}

More information on CORS enabled image @ Mozilla DEV Network.

Categories: HTML 5 JAVASCRIPT
Tags: HTML5JavaScript
Shravan Kumar Kasagoni:
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