[jira] Commented: (PDFBOX-513) PDJpeg does not support transparency/alpha

["Yonas Jongkind (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751836#action_12751836 ] 

Yonas Jongkind commented on PDFBOX-513:
---------------------------------------

And a partial diff as well... Source refomatting made the full diff useless, but it's an easy bit of code to copy from the attached source:

84,85c98
<         if (image != null) 
<         {
---
>         if (image != null) {
103a117,139
>         BufferedImage alpha = null;
>         if (bi.getColorModel().hasAlpha()){
>         
> 	        alpha = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_BYTE_GRAY);
> 	        Graphics2D g = alpha.createGraphics();
> 	        g.setColor(Color.BLACK);
> 	        g.drawRect(0, 0, bi.getWidth(), bi.getHeight());
> 	        g.setColor(Color.WHITE);
> 	        g.drawImage(bi, 0, 0, null);
> 		    for(int y = 0; y < alpha.getHeight(); y++){
> 		    	for(int x = 0; x < alpha.getWidth(); x++){
> 		    		Color color = new Color(alpha.getRGB(x, y));
> 		    		if(color.getRed() != 0 && color.getGreen() != 0 && color.getBlue() != 0){
> 		    			alpha.setRGB(x, y, (Color.white).getRGB());
> 		    		}
> 		    	}
> 		    }
> 	        
> 	        BufferedImage image = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_USHORT_565_RGB);
> 	        g = image.createGraphics();
> 	        g.drawImage(bi, 0, 0, null);
> 	        bi = image;
>         }





> PDJpeg does not support transparency/alpha
> ------------------------------------------
>
>                 Key: PDFBOX-513
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-513
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 0.8.0-incubator
>         Environment: Any
>            Reporter: Yonas Jongkind
>         Attachments: PDJpeg.java
>
>
> The code does not handle this feature. Patch attached.

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