adding image to pdf

Shades
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9 years 2 months ago #11584 by Shades

adding image to pdf was created by Shades

Hi,

Need your help please to be able to add an image without alpha:

Code:

CGRect drawRect = CGRectMake(100, 0, 300, 300);
  UIImage *img =[UIImage imageWithData:data];
    if(img){
             CGContextDrawImage(context, drawRect, img.CGImage);
      }

After that I am not able to see the image added even after invoking

Code:

[m_view vRenderSync:page];

Thank you for your help

stronglee
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9 years 2 months ago #11585 by stronglee

Replied by stronglee on topic adding image to pdf

Hi，
did you check context is nil ?
and are you calling UIGraphicsGetCurrentContext() inside of the drawRect method? As far as I know, it can only be called within drawRect, otherwise it will just return nil.

I tried your method add into drawRect method ,it works.

stronglee
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9 years 2 months ago #11586 by stronglee

Replied by stronglee on topic adding image to pdf

If you want add image annot to PDF files,you can try AddAnnotBitmap method

Shades
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9 years 2 months ago #11587 by Shades

Replied by Shades on topic adding image to pdf

Thank you for your reply

with AddAnnotBitmap,the image doesn't keep the transparent background .( the background is always white )That's why I am trying other methods.

emanuele
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9 years 2 months ago #11594 by emanuele

Replied by emanuele on topic adding image to pdf

Hi,

you can download the new beta version here , with the new PDFDoc method: [PDFDoc newImage] that uses a CGImageRef to create a PDFDocImage object.
Here is an example:

Code:

// Get PDFDocImage instance from CGImageRef (keeping alpha channel)
PDFDocImage *i = [m_doc newImage:ref :YES];
    
// Add the image
[page addAnnotBitmap:i :&rect];

Shades
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9 years 2 months ago #11597 by Shades

Replied by Shades on topic adding image to pdf

Thank you very much for your help !!

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