Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- // JavaScript Document<script type="text/javascript">
- // On window load. This waits until images have loaded which is essential
- $(window).load(function(){
- // Fade in images so there isn't a color "pop" document load and then on window load
- $(".item img").fadeIn(200);
- // clone image
- $('.item img').each(function(){
- //alert('1');
- var el = $(this);
- el.css({"position":"absolute"}).wrap("<div class='img_wrapper' style='display: inline-block'>").clone().addClass('img_grayscale').css({"position":"absolute","z-index":"998","opacity":"0"}).insertBefore(el).queue(function(){
- var el = $(this);
- el.parent().css({"width":this.width,"height":this.height});
- el.dequeue();
- });
- //alert(this.src);
- this.src = grayscale(this.src);
- });
- // Fade image
- $('.item img').mouseover(function(){
- $(this).parent().find('img:first').stop().animate({opacity:1}, 200);
- })
- $('.img_grayscale').mouseout(function(){
- $(this).stop().animate({opacity:0}, 200);
- });
- });
- // Grayscale w canvas method
- function grayscale(src){
- //var canvas = document.createElement('canvas');
- //var ctx = canvas.getContext('2d');
- var canvas = document.createElement('canvas');
- var G_vmlCanvasManager;
- // code for IE browsers
- if (window.G_vmlCanvasManager)
- {
- //canvas = window.G_vmlCanvasManager.initElement('#designer_grid');
- canvas = window.G_vmlCanvasManager.initElement(canvas);
- var ctx = canvas.getContext('2d');
- }
- // Non IE browsers
- else
- {
- var ctx = canvas.getContext('2d');
- }
- var imgObj = new Image();
- imgObj.src = src;
- canvas.width = imgObj.width;
- canvas.height = imgObj.height;
- ctx.drawImage(imgObj, 0, 0);
- //alert(canvas.height);
- var imgPixels = ctx.getImageData(0, 0, canvas.width, canvas.height);
- for(var y = 0; y < imgPixels.height; y++){
- for(var x = 0; x < imgPixels.width; x++){
- var i = (y * 4) * imgPixels.width + x * 4;
- var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
- imgPixels.data[i] = avg;
- imgPixels.data[i + 1] = avg;
- imgPixels.data[i + 2] = avg;
- }
- }
- ctx.putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
- return canvas.toDataURL();
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement