Current File : /home/t/r/a/tradesc/www/relax/wp-content/plugins/ewww-image-optimizer/includes/resize-detection.js
window.onload = function() {
checkImageSizes();
var adminBarButton = document.getElementById('wp-admin-bar-resize-detection');
if (adminBarButton) {
adminBarButton.onclick = function() {
adminBarButton.classList.toggle('ewww-fade');
clearScaledImages();
checkImageSizes();
setTimeout(function() {
adminBarButton.classList.toggle('ewww-fade');
}, 500);
};
}
}
function checkImageSizes() {
// Find images which have width or height greater than their natural
// width or height, and give them a stark and ugly marker, as well
// as a useful title.
var imgs = document.getElementsByTagName("img");
for (i = 0; i < imgs.length; i++) {
imgs[i].classList.remove('scaled-image');
checkImageScale(imgs[i]);
}
return false;
}
function checkImageScale(img) {
if (!img.src) {
return;
}
if ('string' == typeof img.src && img.src.search(/\.svg/) > -1) {
return;
}
if ('string' == typeof img.src && img.src.search(/data:image/) > -1) {
return;
}
console.log('checking size of: ' + img.src);
if (img.naturalWidth) {
if (img.naturalWidth > 25 && img.naturalHeight > 25 && img.clientWidth > 25 && img.clientHeight > 25) {
// For each image with a natural width which isn't
// a 1x1 image, check its size.
var dPR = (window.devicePixelRatio || 1);
var wrongWidth = (img.clientWidth * 1.5 * dPR < img.naturalWidth);
var wrongHeight = (img.clientHeight * 1.5 * dPR < img.naturalHeight);
if (wrongWidth || wrongHeight) {
img.classList.add('scaled-image');
img.title = "Forced to wrong size: " +
img.clientWidth + "x" + img.clientHeight + ", natural is " +
img.naturalWidth + "x" + img.naturalHeight + "!";
}
}
}
}
function clearScaledImages() {
var scaledImages = document.querySelectorAll('img.scaled-image');
for (var i = 0, len = scaledImages.length; i < len; i++){
scaledImages[i].classList.remove('scaled-image');
}
}
document.addEventListener('lazyloaded', function(e){
e.target.classList.remove('scaled-image');
var current_title = e.target.title;
if (0 === current_title.search('Forced to wrong size')) {
e.target.title = '';
}
checkImageScale(e.target);
});
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