Bug 142548

Summary:	[EMF] ExtTextOut exScale/eyScale in GM_COMPATIBLE mode
Product:	LibreOffice	Reporter:	Valek Filippov <frob>
Component:	graphics stack	Assignee:	Not Assigned <libreoffice-bugs>
Status:	NEW ---
Severity:	normal	CC:	gang65, raal
Priority:	medium
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
Crash report or crash signature:		Regression By:
Bug Depends on:
Bug Blocks:	103859, 138087
Attachments:	EMF sample with different ex/ey Scales How it looks in MS Paint How it looks in LO 7.2 master

Description Valek Filippov 2021-05-28 18:37:47 UTC

Description:
LO ignores exScale/eyScale values in ExtTextOutW/A EMR.

Steps to Reproduce:
Open attached EMF sample.

Actual Results:
LO draws all texts in normal orientation.

Expected Results:
Text lines with negative ex/ey Scales has to be flipped. Text lines with non-equal absolute values of ex/ey Scales have to be distorted.


Reproducible: Always


User Profile Reset: No



Additional Info:
This issue seems to be a root-cause of wrong text orientation somewhere deep in tdf#138087

Comment 1 Valek Filippov 2021-05-28 18:39:43 UTC

Created attachment 172421 [details]
EMF sample with different ex/ey Scales

It looks like only signs and ex/ey ratio is important.
Text is not scaled 9 times if exScale=eyScale=9.

Comment 2 Valek Filippov 2021-05-28 18:41:44 UTC

Created attachment 172422 [details]
How it looks in MS Paint

Comment 3 Valek Filippov 2021-05-28 18:42:13 UTC

Created attachment 172423 [details]
How it looks in LO 7.2 master

Comment 4 raal 2021-05-29 14:56:25 UTC

Confirm with Version: 7.2.0.0.alpha1+ / LibreOffice Community
Build ID: 42d2b2d55a27f11153ea1713737d93540a19211d
CPU threads: 4; OS: Linux 5.11; UI render: default; VCL: gtk3
Locale: cs-CZ (cs_CZ.UTF-8); UI: en-US
Calc: threaded