pdfbox-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tilman Hausherr (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (PDFBOX-4363) [Patch] Add a common interface PDShadingPaint for all shading paints
Date Sun, 04 Nov 2018 07:58:00 GMT

     [ https://issues.apache.org/jira/browse/PDFBOX-4363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tilman Hausherr resolved PDFBOX-4363.
       Resolution: Fixed
         Assignee: Tilman Hausherr
    Fix Version/s: 3.0.0 PDFBox

Thank you. I like the generics usage much better than the first patch.

> [Patch] Add a common interface PDShadingPaint for all shading paints
> --------------------------------------------------------------------
>                 Key: PDFBOX-4363
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4363
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Rendering
>    Affects Versions: 2.0.12
>            Reporter: Emmeran Seehuber
>            Assignee: Tilman Hausherr
>            Priority: Minor
>             Fix For: 2.0.13, 3.0.0 PDFBox
>         Attachments: pdshadingpaint_base_interface.patch, shadingpaint_generic_baseclass.patch
> The attached patch adds an common interface PDShadingPaint to all PDShading-based Paint's.
It allows to access the underlying PDShading object and the matrix of the paint.
> At the moment it is not possible to access this fields without using dirty accessibility hacks,
see also [this commit|https://github.com/rototor/pdfbox-graphics2d/commit/8603f6f9c781604d4684b8cb46499703c34b4711].
> Why would you need that? I need that for my [PdfBoxGraphics2D|https://github.com/rototor/pdfbox-graphics2d]
adapter. I draw PDF pages using PDFRenderer/PageDrawer back into a PDF. While doing so I derive
from both classes and change / filter certain aspects of the PDF. One use case is to extract
a specific seperation color into its own PDF page, remap it to another color and also draw
some overfill (i.e. a additional border of 0.5pt around all shapes drawn with this color).
This so prepared page is then used with a machine which glues foil (gold, silver or copper)
on the places marked with that color.
> You can look at an [example here|https://github.com/rototor/pdfbox-graphics2d/blob/master/src/test/java/de/rototor/pdfbox/graphics2d/PdfRerenderTest.java],
it does not use a seperation color, but you should get the idea. 
> My long term goal is to be able to use PDFBox for all possible pre-press PDF manipulations.
E.g. changing/remapping colorspaces, resampling images to the target resolution, ...
> At the moment I know of this "special cases" which will need a special treatment, as
they are normally handled through rendering them first into a BufferedImage:
>  - Transparency groups
>  - Softmasks
> Are there other places which resort to rendering to a BufferedImage first?

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: dev-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: dev-help@pdfbox.apache.org

View raw message