Issue 17561 - bitmaps in ole objects and metafiles are not antialiased
Summary: bitmaps in ole objects and metafiles are not antialiased
Alias: None
Product: Impress
Classification: Application
Component: ui (show other issues)
Version: OOo 1.1 RC2
Hardware: PC Windows 2000
: P4 Trivial with 2 votes (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
: 109928 (view as issue list)
Depends on:
Reported: 2003-07-29 11:07 UTC by wszenajch
Modified: 2013-08-07 15:21 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Attachment for issue 17561 with incorrect dispaly examples. (100.65 KB, application/octet-stream)
2003-07-29 11:10 UTC, wszenajch
no flags Details

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Description wszenajch 2003-07-29 11:07:13 UTC
In attached file with sample 3 slides presentation several elements are not 
displayed correctly or wiht noticeably lower quality than with original 
PowerPoint. Please compare one by one what is dispalyed by PowerPoint with 
Presentation display.
Slide 1: "Bubbles" are displayed incorrectly changing the meaning of the slide.
Slides 2 and 3: Included bitmap OLE objects are not displayed correctly 
(missing boxes or hardly readable contents).
Comment 1 wszenajch 2003-07-29 11:10:06 UTC
Created attachment 8111 [details]
Attachment for issue 17561 with incorrect dispaly examples.
Comment 2 wolframgarten 2003-08-04 08:52:34 UTC
Reassigned to Christian.
Comment 3 christian.guenther 2003-08-13 14:20:49 UTC
set to new
Comment 4 christian.guenther 2003-08-13 14:23:08 UTC
set the target
Comment 5 christian.guenther 2003-08-13 14:24:02 UTC
I can reproduce the bugs
I think you are alredy working on this bugs.
Please have a look.
Comment 6 sven.jacobi 2003-09-12 16:00:47 UTC
The problem with the "bubbles" on page one is double to Issue 14617,
therefore I changed the title. Further on this Issue will address the
remaining problem only.

The problem with the objects on page 2 and 3 is, that they are not
antialiased. Currently we are antialiasing only graphic objects, the
objects on page 2 and 3 are ole objects.

A workaround would be to break the objects via context menu into
normal graphic objects.

Comment 7 thb 2003-09-12 19:04:29 UTC
Okay, will see if we can hook in GraphicManager here.
Comment 8 thb 2003-09-24 09:25:46 UTC
Comment 9 thb 2003-09-24 09:31:47 UTC
Copied from an internal duplicate to this bug: Generally, bitmaps in metafiles look 
strange after scaling.
- some text in the scaled bitmap in a metafile looks strange
the quality of the text depends of the size and the resolution of the monitor
- on small 
monitors the text is unredable
- In PPT the quality of the text is much 

KA=>THB: problem in this case is, that bitmaps inside metafiles are not 
displayed via the GraphicsManager but instead with a direct call to 
OutputDevice::DrawBitmap. We should consider, to hook playing the metafile add 
take special care of bitmap output.

THB: We cannot do that currently, since 
interpolated bitmap scaling is in goodies, which resides above VCL. Furthermore, it 
is IMHO a feature request to interpolate bitmap scaling in metafiles. Please note 
that Windows does _not_ interpolate when displaying WMF/EMF metafiles. PowerPoint 
internally converts (breaks) them into separate drawing objects.

THB: After 
some talk with KA, this could indeed work via the GraphicManager, since all that 
picture drawing is done via that object. When a transformed metafile is requested, 
one could imagine to intercept the painting via hooks and scale the bitmap within the 
GraphicManager. Need to investigate further.

THB: #102664# for bugdoc.
Comment 10 marc.neumann 2003-10-06 14:14:19 UTC
"According to the roadmap
( this issue was retargeted to
OOo Later." 
Comment 11 thb 2004-05-04 13:17:33 UTC
The remainder is a quality issue, which does no longer justify prio 2.
Comment 12 wszenajch 2005-12-13 10:51:00 UTC
Update for OOo 2.0 Windows XP SP2 Display LCD Philips 170S 1280x1024 32 bit color:

Slide 1 "Bubbles" displayed correctly and closed in issue 14617.
Slide 2 looks better than in OOo 1.1RC2 but still is less readable than in Power
Point (especially some decimal points - colons).
Slide 3 is unreadable as in previous OOo version.
Comment 13 bjoern.milcke 2007-07-19 17:34:30 UTC
Listening to this issue
Comment 14 michael.ruess 2010-03-08 14:53:36 UTC
*** Issue 109928 has been marked as a duplicate of this issue. ***
Comment 15 thb 2012-07-13 20:47:02 UTC
Reset to default bug assignee.