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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2020/09/21 17:33:00 UTC
[jira] [Updated] (PDFBOX-4928) Could the new rendering method of
PageDrawer be optional?
[ https://issues.apache.org/jira/browse/PDFBOX-4928?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr updated PDFBOX-4928:
------------------------------------
Fix Version/s: 3.0.0 PDFBox
2.0.22
> Could the new rendering method of PageDrawer be optional?
> ---------------------------------------------------------
>
> Key: PDFBOX-4928
> URL: https://issues.apache.org/jira/browse/PDFBOX-4928
> Project: PDFBox
> Issue Type: Wish
> Components: Rendering
> Affects Versions: 2.0.20
> Reporter: Christian Appl
> Priority: Major
> Fix For: 2.0.22, 3.0.0 PDFBox
>
> Attachments: image-2020-08-03-09-43-37-412.png, prescaled.png, unprescaled.png
>
>
> This relates to {color:#008dde}PDFBOX-4516, PDFBOX-4527, PDFBOX-4815, PDFBOX-4886, PDFBOX-4863{color}{color:#008dde}
> I have tested the new prescaled rendering method for the {color}org.apache.pdfbox.rendering.{color:#008dde}PageDrawer {color:#172b4d}with PDFBox:2.0.21-SNAPSHOT{color}{color} for different images, with different resolutions, target image sizes etc. and compared the results to our old expectations (pre 2.0.20). And I really like it!
>
> However it seems to depend on the person's subjective perception (atleast for my tested images), whether I like the old or the new results better. When asking my colleagues, I heard arguments for both sides.
>
> Therefore my question is: Could a RenderingHint be introduced to disable/enable this separately and more intentionally, instead of assuming, that the scaling method must always be applied for specific scaling factors?
> This would allow users to select the scaling method according to their own liking and needs.
>
> I can not really find a crystal clear, objective answer, whether the one or the other is "better", therefore I would prefer being able to de/activate it according to my own judgement.
> As far as I understand, the criterion (scaleX < {color:#1750eb}0.5 {color}|| {color:#000000}scaleY {color}< {color:#1750eb}0.5{color}) has been selected rather arbitrarily.( ? )
> But what if I want to apply it even to images above those scaling factors?
> What if I want to not apply it to images bellow those scaling factors?
> What if I want to apply it to Image A, but not to Image C, for some unknown reason?
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