Details
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Type:
Improvement
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Status: Reopened
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Priority:
Major
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Resolution: Unresolved
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Affects Version/s: 4.2.2
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Fix Version/s: None
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Component/s: Core/Parsing
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Labels:None
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Environment:any
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ICEsoft Forum Reference:
Description
A few releases ago basic support for transparency group support was added. Mainly transparency support for a group of shapes and knockouts.
The current implementation will detect a transparency group flag on the form object. If detected painting is deferred and the shapes painted to image so that a transparency group can be applied. The problem with this approach is that image will look blurred as document zoom is applied.
It may be possible to spawn a new graphics context with g2d.createGraphics() in a similar but alternative means to creating the image. A little bit of research needs to be done here.
The current implementation will detect a transparency group flag on the form object. If detected painting is deferred and the shapes painted to image so that a transparency group can be applied. The problem with this approach is that image will look blurred as document zoom is applied.
It may be possible to spawn a new graphics context with g2d.createGraphics() in a similar but alternative means to creating the image. A little bit of research needs to be done here.
Issue Links
Activity
| Field | Original Value | New Value |
|---|---|---|
| Salesforce Case | [] | |
| Fix Version/s | 4.3 [ 10266 ] |
| Salesforce Case | [] | |
| Fix Version/s | 5.0 [ 10314 ] | |
| Fix Version/s | 4.3 [ 10266 ] |
A user on the forms has also reported the render quality issue. Pretty sure I should remove the code in question. http://jforum.icesoft.org/JForum/posts/list/0/20778.page
Show
Patrick Corless
added a comment - A user on the forms has also reported the render quality issue. Pretty sure I should remove the code in question. http://jforum.icesoft.org/JForum/posts/list/0/20778.page
| Salesforce Case | [] | |
| Component/s | Core [ 10022 ] | |
| Fix Version/s | 4.3.3 [ 10333 ] | |
| Fix Version/s | 5.0 [ 10314 ] |
I've reverted the xform code back to standard drawing with out the back buffer. This addresses the quality issues, further work will be done to try a different approach to achieving transparency groups effects.
Show
Patrick Corless
added a comment - I've reverted the xform code back to standard drawing with out the back buffer. This addresses the quality issues, further work will be done to try a different approach to achieving transparency groups effects.
| Status | Open [ 1 ] | Resolved [ 5 ] |
| Resolution | Fixed [ 1 ] |
attached the wrong bug for this case. Updated ContentParser and Shapes in rev 28864.
Show
Patrick Corless
added a comment - attached the wrong bug for this case. Updated ContentParser and Shapes in rev 28864.
| Repository | Revision | Date | User | Message |
| ICEsoft Public SVN Repository | #30260 | Wed Jul 25 17:41:45 MDT 2012 | patrick.corless | PDF-350 addition of property org.icepdf.core.disableTransparencyGroup to enable user to turn off transparency group support when raster quality is too low. |
| Files Changed | ||||
MODIFY
/icepdf/trunk/icepdf/core/src/org/icepdf/core/util/ContentParser.java
MODIFY
/icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/graphics/Shapes.java
|
needs more work...
Show
Patrick Corless
added a comment - needs more work...
| Resolution | Fixed [ 1 ] | |
| Status | Resolved [ 5 ] | Reopened [ 4 ] |
| Salesforce Case | [] | |
| Fix Version/s | 4.5 [ 10342 ] | |
| Fix Version/s | 4.3.3 [ 10333 ] |
Transparency groups have been reworked a bit in 4.3.3 but the implementation in general needs quite a bit more work. The PDF in question can be rendered at full quality if the system property -Dorg.icepdf.core.disableTransparencyGroup=true.
Show
Patrick Corless
added a comment - Transparency groups have been reworked a bit in 4.3.3 but the implementation in general needs quite a bit more work. The PDF in question can be rendered at full quality if the system property -Dorg.icepdf.core.disableTransparencyGroup=true.
| Fix Version/s | 5.0 [ 10314 ] | |
| Fix Version/s | 4.5 [ 10342 ] |
| Fix Version/s | 5.1 [ 10675 ] | |
| Fix Version/s | 5.0 [ 10314 ] |
| Fix Version/s | 5.2 [ 10970 ] | |
| Fix Version/s | 5.1 [ 10675 ] |
| Fix Version/s | 5.3 [ 12070 ] | |
| Fix Version/s | 5.2 [ 10970 ] |
| Fix Version/s | 6.0.2 [ 12971 ] | |
| Fix Version/s | 6.1 [ 12070 ] |
| Fix Version/s | 6.1 [ 12070 ] | |
| Fix Version/s | 6.0.2 [ 12971 ] |
Our smak algorithm as been improved to do a better job of blending alpha. Further work is need to explore if the matte entry can be used to properly decode this.
Show
Patrick Corless
added a comment - Our smak algorithm as been improved to do a better job of blending alpha. Further work is need to explore if the matte entry can be used to properly decode this.
| Fix Version/s | 6.1 [ 12070 ] |
I've been working on an over fix for transparency group support and soft masking for groups. Still a lot of work to do, moving out to 5.0.