Bug 425745

Summary:	ShadowedRectangle produces huge inconsistent shadows for specific use case
Product:	[Frameworks and Libraries] frameworks-kirigami	Reporter:	Michail Vourlakos <mvourlakos>
Component:	general	Assignee:	Arjen Hiemstra <ahiemstra>
Status:	REPORTED ---
Severity:	normal	CC:	nate, noahadvs
Priority:	NOR
Version:	Master
Target Milestone:	Not decided
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	ShadowedRectangle with `shadow.size: 18` and `height: 18` width `height: 32` and `shadow.size: 36` height: 32, shadow.size: 31 ShadowedRectangle Visual Debugger

Description Michail Vourlakos 2020-08-24 13:50:57 UTC

SUMMARY
Playing around with ShadowedRectangle the following use case creates huge shadows even though it should not.

when: min(rect_width,rect_height) > shadow_size

in that case the shadows become too large and are much bigger than the specified shadow_size.

Example:
for Rectangle, w=100px, h=30px., shadow=30px. everything looks just fine but if the shadow size changes to 31px. then the produced shadow is much bigger than 31px. and occupies very big area with no obvious reason.

Comment 1 Noah Davis 2020-10-11 19:26:12 UTC

I can reproduce this

Comment 2 Noah Davis 2020-10-11 19:27:29 UTC

Created attachment 132281 [details]
ShadowedRectangle with `shadow.size: 18` and `height: 18`

Comment 3 Noah Davis 2020-10-11 19:39:42 UTC

Created attachment 132283 [details]
width `height: 32` and `shadow.size: 36`

Comment 4 Noah Davis 2020-10-11 19:48:21 UTC

Actually, I'm not sure I reproduce the issue as you described it because having a shadow size lower than the width or height doesn't necessarily create a shadow that is actually smaller than the width or height.

Comment 5 Noah Davis 2020-10-11 19:49:55 UTC

Created attachment 132284 [details]
height: 32, shadow.size: 31

Comment 6 Bug Janitor Service 2020-10-26 04:33:23 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

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If you have already provided the requested information, please
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Thank you for helping us make KDE software even better for everyone!

Comment 7 Michail Vourlakos 2020-10-28 09:12:28 UTC

Created attachment 132826 [details]
ShadowedRectangle Visual Debugger

Comment 8 Michail Vourlakos 2020-10-28 09:14:25 UTC

You are right, with KF5 5.75 I can not reproduce... I sent also a ShadowedRectangle Visual Debugger with validate results.

With the visual debugger I reproduce a new bug that very big shadows are cut out.

For example,
height: 30px.
shadow: 50px.

should I open a new bug report or this is known?