Is there any way of detecting an error when a Flash-plugin loads its content?
Basically, what I want to do is to provide some alternate content, in case something goes wrong when the Flash-plugin tries to load it's .swf file.
The .swf file is managed by a CMS type system and hence I want to create some kind of fall back default content, in case something has gone wrong, e.g the .swf file has been deleted.
I know how to detect the flash version etc. but I can't find any resources on this type of scenario.
If you are embedding with SWFObject, then I think you want to look at the result of your embedding javascript:
var so = swfobject.createSWF( ... );
Here are some details:
http://pipwerks.com/lab/swfobject/test-embed-success/index.html
Unfortunately there is no such event and you can't detect this with SWFObject either.
It is only possible if you own the SWF files.
NOTE: success is report as true if the minimum Flash player required is available and that the Flash plugin-in DOM element for the SWF was created. SWFObject cannot detect if the swf file request has actually loaded or not.
from: https://code.google.com/p/swfobject/wiki/api
Related
We are a little stuck however on the following embedded flash image:
[kml_flashembed movie="http://www.griffintaxfree.com/images/logos/stacklogos.swf" height="250" width="500" /]
I need to know how to open up this, change the images within it, and then re-post it to our web page.
It was created by someone who no-longer handles our site.
You need a Flash Decompiler. Once the program is compiled to SWF it is very difficult to extract what's inside.
If you can get the program to display the image it's probably easier to take a screenshot.
Downloading the file...
If you can navigate directly to the URL (your case):
Use the Save Page As... feature, typically under File, or Page Settings in most browsers
If it is embedded within a page:
You can usually navigate to the file itself, by looking at the available items on the page, such as using the following in Firefox:
Tools => Page Info => Media => Find the flash file => Save As...
or by scouring through the source and finding a link to the file itself and saving it.
Editing the file...
The editing process however, can be much more difficult, especially if you don't have anyone with experience working with Flash. You will need a Flash Decompiler to make the file editable.
I want a frame with a PDF document. The main document will use javascript to tell the PDF document what page to display and zoom level. Can this be done? If so, how or could you point me to documentation on it. Thanks.
You can't/shouldn't do it in a frame, but you can create an <object> on your page that is controllable using the JavaScript API.
http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/js_api_reference.pdf
Not easily. It all depends on what's being used to display the PDF in the browser. Not all browsers have built-in PDF viewers, and then there's many different external viewers (e.g. Acrobat, Fox-It, etc...) as well. As far as I know, there's
You can try hacking up the URL like this:
http://example.com/somedocument.pdf#page=5
but this may work in Acrobat only, as documented here: http://partners.adobe.com/public/developer/en/acrobat/PDFOpenParameters.pdf
Do you need a PDF reader to be loaded and running? If not, you could write a back end script/program to render a specified page as an image (GIF, PNG, etc.) at a particular zoom level. Then your main page could load an image with something like:
<img src="render_pdf?page=4&zoom=150">
The src value could be controlled with javascript to make it dynamic.
To convert from PDF to an image in your render_pdf script, you can use ghostscript, or an image specific library like ImageMagick or GD, depending on what backend technology you are using.
Have a look at jsPDF - it may not output a .pdf onscreen in IE6 and IE7 due to limitations with datauri's, but its a good start. I dont see why this couldnt be built up in an iframe either.
As Jordan pointed out, you should use the <object> tag to embed the PDF. Then, in the PDF itself, you need to embed Javascript to handle the messages you pass in, such as:
if(!this.hostContainer.messageHandler) this.hostContainer.messageHandler = new Object();
this.hostContainer.messageHandler.onMessage = handleMessage;
function handleMessage(msg) {
// do stuff here
}
Finally, in your HTML JS, you pass messages in with:
document.getElementById('yourpdfobject').postMessage('some message or array');
is it possible to change the playback speed of a flash object without having to recompile the flash object, i.e through the html attributes or javascript?
thanks in advance
No, but you can call a function within your SWF file from JavaScript (ExternalInterface. addCallback) that changes your animation's FPS... However, you would need to create the function in your flash file and recompile it once.
You could also create a loader SWF that has this functionality, and load your old flash movie from it.
Is there anyway to take take a "screenshot", "save" or "capture" the active SWF element on a page as an image? I'd like for users to be able to simply click a button on my page, instead of having to need to manually take a screenshot of the entire page and then crop the image to show only the SWF element.
I found a Jquery method, although I am unsure if it could work with SWF files. It basically captures an area of an Image element on the page and allows you to save that as a separate image. What I would need however, is to capture the SWF as the image instead. Note: I do not have access to the SWF code so I cannot achieve this using Actionscript or anything like that -it has to be purely done with PHP and Javascript.
Thanks for any ideas :)
I don't think that there is a way to do this from Javascript, but if you host those swf files on your own server you could create a wrapper swf which loads the swfs you want to screenshot dynamically and then draws them into a BitmapData object.
The snapshot process inside of the swf can be triggered from Javascript via ExternalInterface, after that you can either serialize the raw pixels or use a PNG or JPEG encoder inside the wrapper swf to convert the bitmapdata to a image file and then send that data back to Javascript via ExternalInterface. Or you use the FileReference class in the swf to save the image file directly on the user's hard drive - one caveat in this is though that in order to trigger the save process the user will have to click a button inside the swf (that's a security feature).
There is one more prerequisite and that is that the swfs that you load into the wrapper have to be hosted on the same domain as the wrapper swf, otherwise the security sandboy will not allow to take a bitmap snapshot of it.
Look at ByteArray.getPixels(0,0,stage.stageWidth,stage.stageHeight) or var b;BitMap = BitMapData(stageW,stageH).draw(stage), depending on your needs. Note that the above two lines are not proper code, just the correct object and function names written in shorthand and from my head.
I need to load a video in shadowbox when the homepage loads. I need to know, what the code would be and specifically where the onload code would go to make this happen?
Well, the actual details would depend on the shadowbox code you use. I'd recommend looking into Jquery as there are a number of shadowbox/lightbox plugins for it. For the actual video I assume you'll be using flash. If this is the case you'll also want to look into swfobject (which also has a good Jquery plugin) for handling the embedding.