Bug 59592 - ScrollView with Padding has incorrect ContentSize
Summary: ScrollView with Padding has incorrect ContentSize
Status: CONFIRMED
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.4.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2017-09-20 02:07 UTC by Matthew Percy
Modified: 2017-09-20 16:05 UTC (History)
3 users (show)

Tags: scrollview, padding, ac
Is this bug a regression?: ---
Last known good build:


Attachments
A test project exhibiting the issue (6.06 MB, application/x-7z-compressed)
2017-09-20 02:07 UTC, Matthew Percy
Details


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Status:
CONFIRMED

Description Matthew Percy 2017-09-20 02:07:43 UTC
Created attachment 24824 [details]
A test project exhibiting the issue

See attached sample. There are two buttons to increase/decrease padding to see the ContentSize changes.

If Padding is set on the ScrollView, the ContentSize calculation seems to be off (eg. with Left and Right padding set to 20 either side, and the content being 1000 wide, ContentSize comes back with a width of 1080)

This primarily effects iOS, since changes to the ContentSize appear to affect how far across the ScrollView can scroll. On Android, it doesn't look like the renderer uses ContentSize, which means behaviour on the Android side seems fine.

Please let me know if you need me to elaborate further, or provide more examples.
Thanks
Comment 1 Matthew Percy 2017-09-20 02:28:02 UTC
This might be related to the change from commit b4a46d482f4b511de7e829f1cfe16aa81057560a
Comment 2 Paul DiPietro [MSFT] 2017-09-20 16:05:47 UTC
There is a clear difference between Android and iOS. Also checked against the 2.4.0-pre3 build.