Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 3555
  • Last Modified:

How to export canvas as png at 300 dpi

I'm creating a Card design application in Flex 3 with php on the server side. I'm running into issues with exporting canvas to png at 300 dpi. So far image is only coming out as 72 dpi. Any idea how to make image output 300dpi. Here's how I currently capture the canvas before sending to php to save image:
drawingBoard.clipContent = false;
	Application.application.clipContent = false;
	
         var base64string:String = ImageSnapshot.encodeImageAsBase64( ImageSnapshot.captureImage(drawingBoard,300, new PNGEncoder(),false) );

Open in new window

0
skywalker98
Asked:
skywalker98
1 Solution
 
tryptCommented:
i don't think u can capture the screen with more than 72 dpi unless ur screen's resolution is more than 72 dpi... but i think u can try this work around... multiply the size of the screen capture image by 417%, then u should get the dimension of the image at 300dpi when printed out...
0
 
Gary BenadeCommented:

<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300" creationComplete="init()">
<mx:Script>
	<![CDATA[
		private function init():void
		{
			drawArea.graphics.drawCircle(100,100,100);
			var b:BitmapData = new BitmapData(1000,1000,false,0xFFFFFF);
			var m:Matrix = new Matrix();
			m.scale(300.0/72.0);
			b.draw( drawArea, m);
			var bmp:Bitmap = new Bitmap( b, "auto", true); 
			// bmp will now contain a 300dpi version of drawArea
			// save data here
			b.dispose(); // clean up
		}
	]]>
</mx:Script>
	<mx:HBox id="drawArea" x="24" y="22" width="352" height="211">
	</mx:HBox>
</mx:Canvas>

Open in new window

0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now