Re: original image size is not retained when it is exported as PDF using CGImageDestinationRef
Re: original image size is not retained when it is exported as PDF using CGImageDestinationRef
- Subject: Re: original image size is not retained when it is exported as PDF using CGImageDestinationRef
- From: Deepa <email@hidden>
- Date: Tue, 01 Mar 2011 09:59:50 +0530
- "x-copyrighted-material: http://www.robosoftin.com"
Hi David,
Thank you for the response.
On 01-Mar-2011, at 2:47 AM, David Duncan wrote:
>
> On Feb 25, 2011, at 4:16 AM, Deepa wrote:
>
>> Please correct if I am posting to wrong mailing list.
>
> In general for CG functions, the CoreGraphics-Dev list is a better choice.
The CoreGraphics-Dev is not getting listed under Apple Mailing lists. Could you please mention the steps to register to this category of Apple Mailing list?
>
>> I am developing a Desktop application that supports exporting an PNG image to different image formats.
>> When I export my PNG to (Refer the first link) to PDF format, it appears as shown in link2.
>>
>> http://www.flickr.com/photos/36018837@N05/5472635835/ (Original Image)
>> http://www.flickr.com/photos/36018837@N05/5473232908/ (Exported Image)
>
> In general, you should use a service that allows you to post the actual files involved, as flickr appears to be making it rather difficult to obtain the originals (and I'm not certain if I could obtain a PDF for the exported image or not).
>
>> The image has become larger.
>
>
> My first guess would be that the source image has a DPI > 72, which would cause its display size to be smaller than that of the PDF. Barring that,
> ImageIO's PDF export may just be to make the image a size that fits the page.
I think the problem might be due to that ImageIO's PDF export may just be to make the image a size that fits the page.
>
> I would recommend that rather than allowing ImageIO to export to PDF that you use the CG APIs to generate PDF data yourself, where you can have control over the process.
As you said, I might have to try this out.
> --
> David Duncan
>
Regards,
Deepa
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