Bug 229915

Summary:	Scroll up/down should display previous 1-2 lines
Product:	[Applications] okular	Reporter:	Oleg Atamanenko <oleg.atamanenko+kde>
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED DUPLICATE
Severity:	wishlist
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Half-rendered line on the bottom before scroll down Half-rendered line on the top after scroll down

Description Oleg Atamanenko 2010-03-08 10:09:35 UTC

Version:           0.10.1 (using 4.4.1 (KDE 4.4.1), Chakra)
Compiler:          gcc
OS:                Linux (i686) release 2.6.32-ARCH

Currently it is difficult to use scroll up/down using buttons 'page up' and 'page down' because pressing those buttons moves the whole screen.

And it causes the following situation:
If last line on the screen is not fully rendered (only half from top) and I press page up then okular scrolls down one screen and last line (which becomes first after scrolling) renders only bottom half so I'm unable to read that line and I have to press up and down.

See attached screenshots.

Comment 1 Oleg Atamanenko 2010-03-08 10:15:06 UTC

Created attachment 41434 [details]
Half-rendered line on the bottom before scroll down

Comment 2 Oleg Atamanenko 2010-03-08 10:15:38 UTC

Created attachment 41435 [details]
Half-rendered line on the top after scroll down

Comment 3 Oleg Atamanenko 2010-03-08 10:22:35 UTC

I suggest to detect incomplete rendered line and render it correctly. Maybe it will be much better to render previous 2-3 lines so user will not lose context of his reading.

Comment 4 Pino Toscano 2010-03-08 12:16:31 UTC


*** This bug has been marked as a duplicate of bug 152049 ***