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Rendering non-square DPI |
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Eric24 
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Joined: 28 Jun 09 Location: Dallas, TX Status: Offline Points: 29 |
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 Topic: Rendering non-square DPIPosted: 27 Jul 09 at 6:17AM |
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Currently, the render function supports a single DPI parameter, meaning that if I specify 200, I get a 200x200 DPI output (which works fine), but what if I want 203x196 (standard fax resolution)? Is there any way to specify a non-square DPI (i.e., X and Y of different values)?
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DELBEKE
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Joined: 31 Oct 05 Location: France Status: Offline Points: 151 |
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Posted: 27 Jul 09 at 6:38AM |
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The QickPdf libary can't do it.
I wonder why you want to do that.
What you ca do is render the pdf in a file or stream and use an other way to strech the bitmap on the display or printing device. You can use StretchBlt api, for example.
Edited by DELBEKE - 27 Jul 09 at 6:43AM |
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Eric24
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Joined: 28 Jun 09 Location: Dallas, TX Status: Offline Points: 29 |
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Posted: 27 Jul 09 at 6:41AM |
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Well, the reason I'd want to do it is because a CCITT fax page is 203x196 DPI (for "hi res" faxes), not 200x200.
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DELBEKE
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Joined: 31 Oct 05 Location: France Status: Offline Points: 151 |
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Posted: 27 Jul 09 at 7:35AM |
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To send faxes, you need a spécial tif file (CITTG3), and our library can't produce tifs. So you have to use a specilized imaging library. Such libraries can modify the resolution X / Y independantly .
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Eric24
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Joined: 28 Jun 09 Location: Dallas, TX Status: Offline Points: 29 |
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Posted: 27 Jul 09 at 8:05AM |
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Yes, that's understood. For my purposes, I don't want to directly send the output of the rendered PDF, so I don't need to go directly to CCITT TIFF, but it would still be nice to be able to adjust the X/Y resolution independently.
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