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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2021/02/04 19:51:00 UTC
[jira] [Updated] (PDFBOX-5093) Pass PDFRenderer to PDFPrintable
constructor
[ https://issues.apache.org/jira/browse/PDFBOX-5093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr updated PDFBOX-5093:
------------------------------------
Fix Version/s: 3.0.0 PDFBox
2.0.23
> Pass PDFRenderer to PDFPrintable constructor
> --------------------------------------------
>
> Key: PDFBOX-5093
> URL: https://issues.apache.org/jira/browse/PDFBOX-5093
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Reporter: Alexander
> Priority: Minor
> Fix For: 2.0.23, 3.0.0 PDFBox
>
>
> I prepared a simple example for PDFBOX-4709 "PDFBox prints text poorly in comparison to Adobe, Chrome, other apps" which uses a custom PDF renderer and PageDrawer to draw a text using Graphics2D.drawString(...) method to print a low DPI text with good quality.
> https://github.com/AlexanderScherbatiy/pdfbox/commit/b806d44f9514a7b5fededfa49c98ad2858b93a92
> The sample is prepared for tag 2.0.22. It consists of org.apache.pdfbox.examples.strprinting.StringPrinting sample which sets a custom StringPDFPageable. StringPDFPageable just a copy of PDFPageable (PDFPageable is a final class, it is not possible to override it) where getPrintable(int i) method sets a custom StringPDFRenderer to PDFPrintable.
> StringPDFRenderer just returns a custom StringPageDrawer which is subclass of PageDrawer.
> The aim if StringPageDrawer is an illustration how Graphics2D.drawString(...) can be used.
> Only two fonts PDType0Font and PDType1Font are handled by StringPageDrawer. The code for PDFont AwtFont handling just a copy from PDFBOX 1.8.
> There are a few things which PDFBOX does not provide as a public API.
> The current request is to provide a way to set a custom PDF renderer to PDFPrintable.
> Here is patch which illustrate how it can look like:
> https://github.com/AlexanderScherbatiy/pdfbox/commit/212a78b2b65ada117c0e9ae65c3ae6054ca5fa61
> The other two things are private setClip() and getNonStrokingPaint() methods from PageDrawer. The idea of the sample was to draw a text in the same way as PDFBOX renderingMode.isFill() (the same transform, clip and paint) only changing graphics.fill(glyph) to graphics.drawString(str, 0, 0).
> Is it possible to make setClip() and getNonStrokingPaint() public in some way or it is necessary just to copy them as is?
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