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Re: DrawData and StoreImageAsString, how? [message #3681 is a reply to message #3675]

Mon, 12 June 2006 18:19

mirek is currently offline

mirek
Messages: 14271
Registered: November 2005

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fudadmin wrote on Mon, 12 June 2006 10:18

luzr wrote on Mon, 12 June 2006 14:41

Printer does not recognize any RLE, but that is not what we are sending. We are sending a lot of "DrawImage" and "DrawRect" operations.

Note that even series of "DrawImage" ops without detecting uniform areas can be advantage - because printer is often monochrome and host OS will use much smaller buffer for processing...

Mirek

I'm sending only one aggImg (already formed from agg ops) for one Drawing (via DrawingDraw for resizing).

Yes, I was afraid of that. Completely wrong. This way your only chance is to store extremely big Images (A4 page is 4000x6000 dots).

Instead, you should implement DataDrawer for recorded AGG drawing and return bands that can be converted and "RLE" compressed one by one.

BTW, perhaps it will help to understand the issue that DataDrawer implementation will repeatedly draw the "data" with changeing clipping (for individual bands).

Mirek

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[Message index]

		DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 11:40
		Re: DrawData and StoreImageAsString, how? By: mirek on Mon, 12 June 2006 11:59
		Re: DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 13:17
		Re: DrawData and StoreImageAsString, how? By: mirek on Mon, 12 June 2006 15:18
		Re: DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 15:32
		Re: DrawData and StoreImageAsString, how? By: mirek on Mon, 12 June 2006 15:41
		Re: DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 16:18
		Re: DrawData and StoreImageAsString, how? By: mirek on Mon, 12 June 2006 18:19
		Re: DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 19:02
		Re: DrawData and StoreImageAsString, how? By: mirek on Mon, 12 June 2006 19:06
		Re: DrawData and StoreImageAsString, how? By: fudadmin on Mon, 12 June 2006 20:38

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