Bug 141065

Summary:	Bitmap images are not displayed using retina quality / shown blurred on macOS
Product:	LibreOffice	Reporter:	Thorsten Wagner <thorsten.wagner.4>
Component:	LibreOffice	Assignee:	Not Assigned <libreoffice-bugs>
Status:	NEW ---
Severity:	enhancement	CC:	aron.budea, eisa01, fossuser, fuchs_frank, hujq, jan.public, lo, orbanbalage, raylee.bio, telesto, Vincent.Boudry, wclm75, xiscofauli
Priority:	medium
Version:	7.2.0.0.alpha0+
Hardware:	All
OS:	macOS (All)
See Also:	https://bugs.documentfoundation.org/show_bug.cgi?id=51734 https://bugs.documentfoundation.org/show_bug.cgi?id=122113
Whiteboard:
Crash report or crash signature:		Regression By:
Bug Depends on:
Bug Blocks:	128699
Attachments:	Screenshot printing problems

Description Thorsten Wagner 2021-03-16 12:08:27 UTC

Description:
On macOS text is displayed retina sharp due to tdf#138122. Images are still rendered using single precision.

Steps to Reproduce:
1. Open LO and look at Startcenter's main display without document thumbnails
2. Open e.g. a Writer document with bitmap images emdedded

Actual Results:
Images are displayed with single precision causing slight blur due to apples upscaling algorithm

Expected Results:
Images that are available in double precision (retina quality) during rendering are displayed in retina quality.


Reproducible: Always


User Profile Reset: No



Additional Info:
Implementation earliest after tdf#141063 has been fixed

Comment 1 Thorsten Wagner 2021-03-16 12:09:13 UTC

Created attachment 170515 [details]
Screenshot

Comment 2 lupurus 2021-04-23 12:33:57 UTC Comment hidden (off-topic)

Hi Thorsten. I don't know, if this issue relates to this bug, but I also experience printing problems in Writer. Exporting documents with graphics to a PDF and printing from there brings sharp results, but printing from LO is pixelated.

Comment 3 Thorsten Wagner 2021-04-25 12:19:52 UTC Comment hidden (off-topic)

(In reply to lupurus from comment #2)
Unfortunately I am not able to reproduce. I used LO 7.1.2 for testing. It would be very nice to get a sample document with this issue.

Comment 4 lupurus 2021-04-27 08:48:38 UTC Comment hidden (off-topic)

(In reply to Thorsten Wagner from comment #3)
> (In reply to lupurus from comment #2)
> Unfortunately I am not able to reproduce. I used LO 7.1.2 for testing. It
> would be very nice to get a sample document with this issue.

I tried to reproduce it in a seperate file and first it didn't happen again. So I unarchived the old file and I could see, what was the problem. The problem occurs, when the image is included as a pdf. That happend, because I made a copy + paste from my vector application. LibreOffice will then create a pdf and a png file in the Pictures folder, but it will print the png file, that has a worse resolution. To see what I mean I add a test file.

Comment 5 lupurus 2021-04-27 08:50:24 UTC Comment hidden (off-topic)

Created attachment 171443 [details]
printing problems

Comment 6 Thorsten Wagner 2021-04-29 21:48:08 UTC Comment hidden (off-topic)

Issue does not seem to be related to this issue. Printing results are the same with and without retina graphics enabled.

Comment 7 Thorsten Wagner 2021-09-16 20:54:52 UTC

*** Bug 144264 has been marked as a duplicate of this bug. ***

Comment 8 V Stuart Foote 2021-11-21 20:15:03 UTC

*** Bug 145799 has been marked as a duplicate of this bug. ***

Comment 9 Telesto 2021-11-21 22:31:27 UTC

FWIW: the icon quality is really really bad on macOS, however the icon not that crisp on Windows either with a 'regular' low res 23inch 1080x1920. especially  noticeable with extra large icons.

So suspect multiple problems..

Comment 10 Xisco Faulí 2022-05-03 12:11:40 UTC

Dear Thorsten Wagner,
This bug has been in ASSIGNED status for more than 3 months without any
activity. Resetting it to NEW.
Please assign it back to yourself if you're still working on this.