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Wed, 04 Apr 2007:

I don't have flash on my machines. More than a mere security and convenience measure, it is one of those things enforced by Adobe themselves - by refusing to ship an EM64T/AMD64 build of its mozilla plugins. So when the flickr organizr went Javascript I was happy. But they took away a bit of code which made it really easy to rotate images - because you couldn't do it in Javascript.

But you can. I don't mean with some memory hogging clientside bit twiddling but with the now popular HTML 5 Canvas. So, with a few lines of Greasemonkey code, which you can pull from here, I can now push in image rotate previews back into flickr's organizr. The code has to be run outside greasemonkey land to get full access to the dom data, which I accomplish with the following script insertion.

var _s = document.createElement("script");
_s.appendChild(document.createTextNode(window.myFun.toSource() + "();"));

And just in case you happen to be an IE user, you might want to see if EXCanvas can make my canvas code work decently there.

enhance, v.:
   To tamper with an image, usually to its detriment

posted at: 02:15 | path: /hacks | permalink | Tags: , , ,

Sat, 07 Oct 2006:

One of the first cool things I saw in flickr was notes. They're those small boxes which you can drag across a picture to mark off a region or add some more context to something. When I recently started linking in flickr photos to my blog, these were some things I missed. Without a small box saying "That thin line is the road", a few of the more impressive photographs I'd got were quite ordinary landscapes.

While looking at the new flickr apis - especially the JSON apis, something clicked somewhere. Finally, there seemed to be a very nice way to do cross-domain requests from my blog (or literally any web-page) to flickr to read notes, tags and other information. Minimilastically, this is what my code does :

function myMethod(data) 

var photos_get_info = "http://api.flickr.com/services/rest/?"
        + "method=flickr.photos.getInfo&api_key="+api_key
        + "&format=json&jsoncallback=myMethod"
        + "&photo_id=" + photo_id + "&secret="+secret;

/* cross-domain request */
(function(url) {
	var _s = document.createElement("script");
	_s.src = url;

The photo_id and secret are the two parts in a flickr image url, the first part is the id and the second the secret. Provided you've given valid data there, flickr will respond to your data load with something like the following data.

myMethod({"photo" : .... , "stat" : "ok" });

Which when interpreted by the browser, magically seems to call your callback myMethod. Isn't that beautiful or what ? Of course, this workaround is not necessarily new information for me - but pretty damn convenient. Either way, once you've got the cross-domain data, it is only a few steps away from taking that data and displaying it.

Take a closer look at the ugly javascript if you want, or just look at the pretty pictures or funny pictures or even your own pictures.

Actually, more than being able to embed notes in my blog, this has brought along an unexpected advantage. With this script, the flickr notes are scaled according to the picture, so that you can have notes for a large or original size picture. Maybe I should make this a GM script so that I can do the same in flickr's zoom.gne pages.

Either way, the fun ends here.

It's difficult to see the picture when you are inside the frame.

posted at: 04:20 | path: /hacks | permalink | Tags: , , ,