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Bug 326085

Summary:

[Forms] Last lines of lengthy context-sensitive help garbled

Product:

[Eclipse Project] Platform

Reporter:

Richard Butner <rbutner>

Component:

User Assistance

Assignee:

Chris Goldthorpe <cgold>

Status:

RESOLVED FIXED

QA Contact:

Severity:

normal

Priority:

CC:

cgold, samuelwu

Version:

4.1

Target Milestone:

3.7 M4

Hardware:

OS:

Windows XP

Whiteboard:

Attachments:

Description	Flags
Cshelp window where last two lines are garbled	none
Same cshelp window resized and now displayed normally	none
RPT 8.2 (released) cshelp for schedules, built .xml file from plugin .jar file	none
Patch	none

Description Richard Butner

2010-09-23 13:59:04 EDT

Build Identifier: I20100608-0911

For long context-sensitive (F1) help entries, where a scroll bar is displayed on the help window, if you scroll to the bottom of the window, the last two lines of context-sensitive help are often displayed on top of each other. Thus, the last two lines are unreadable. This problem is also dependent on the width of the help window. If you resize the help window horizontally to make it wider or narrower, the text will shift back and forth between being displayed correctly and incorrectly.

Reproducible: Always

Steps to Reproduce:
1. Open context-sensitive help that is so long that a scroll bar is displayed in the help window.
2. Scroll to the bottom of the help window.
3. Grab the control on the side of the help window and move it back and forth to make the window wider or narrower.

Comment 1 Chris Goldthorpe

2010-11-11 21:27:53 EST

Can you attach a screen shot?

Comment 2 Richard Butner

2010-11-12 08:21:32 EST

Created attachment 182989 [details]
Cshelp window where last two lines are garbled

Comment 3 Richard Butner

2010-11-12 08:22:14 EST

Created attachment 182990 [details]
Same cshelp window resized and now displayed normally

Comment 4 Chris Goldthorpe

2010-11-12 12:37:20 EST

Thanks for the screenshots. Can you also attach a contexts.xml file which includes that context information?

Comment 5 Richard Butner

2010-11-12 13:45:25 EST

Created attachment 183026 [details]
RPT 8.2 (released) cshelp for schedules, built .xml file from plugin .jar file

Comment 6 Chris Goldthorpe

2010-11-12 18:23:49 EST

I can reproduce the problem using the attached contexts file and the context ScheduleOptions_UserLoad on Win XP.

Comment 7 Chris Goldthorpe

2010-11-15 18:50:12 EST

Created attachment 183177 [details]
Patch

The problem was occurring in Paragraph.computeRowHeights(). After looping through the segments hloc.collectHeights() sets the height of the row to hloc.rowHeight. If the last ParagraphSegment was a BreakSegment hloc.rowHeight() gets set to zero and two rows get printed in the same location.

Comment 8 Chris Goldthorpe

2010-11-15 18:52:24 EST

Patch applied to HEAD, Fixed

Comment 9 Chris Goldthorpe

2010-11-15 19:00:37 EST

A workaround is to eliminate any white space between the end of the description text and the end tag </description> in the contexts file.

Comment 10 Chris Goldthorpe

2011-03-04 17:05:02 EST

*** Bug 338943 has been marked as a duplicate of this bug. ***