I have images that will be quite big in dimension and I want to shrink them down with jQuery while keeping the proportions constrained, i.e. the same aspect ratio.
Can someone point me to some code, or explain the logic?
I think this is a really cool method:
/**
* Conserve aspect ratio of the original region. Useful when shrinking/enlarging
* images to fit into a certain area.
*
* @param {Number} srcWidth width of source image
* @param {Number} srcHeight height of source image
* @param {Number} maxWidth maximum available width
* @param {Number} maxHeight maximum available height
* @return {Object} { width, height }
*/
function calculateAspectRatioFit(srcWidth, srcHeight, maxWidth, maxHeight) {
var ratio = Math.min(maxWidth / srcWidth, maxHeight / srcHeight);
return { width: srcWidth*ratio, height: srcHeight*ratio };
}