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STR #3301
| Application: | FLTK Library |
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| Status: | 5 - New |
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| Priority: | 2 - Low, e.g. a documentation error or undocumented side-effect |
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| Scope: | 3 - Applies to all machines and operating systems |
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| Subsystem: | Core Library |
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| Summary: | Fl_Text_Display::scroll(line) not working with wrap_mode() |
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| Version: | 1.3-current |
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| Created By: | superbem |
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| Assigned To: | Unassigned |
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| Fix Version: | Unassigned |
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| Update Notification: | |
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Trouble Report Files:
[ Post File ]
Trouble Report Comments:
[ Post Text ]
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| #1 | superbem
00:20 Apr 10, 2016 |
| Text_display scroll to line in wrap_mode doesn't scroll to the line specified, in no-wrap works as it should. | |
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| #2 | greg.ercolano
06:28 Jul 23, 2016 |
| I take this to mean this is regarding the Fl_Text_Display widget
using scroll(int topLineNum, int horizOffset) to scroll to a specific
line while the wrap_mode() is set to e.g. WRAP_AT_BOUNDS,
and lines are long enough to wrap.
Can confirm with the attached program, which uses scroll(4,0) to scroll
the display to show line #0004:
It shows line 0002 instead of 0004, apparently due to the effects
of line wrapping.
If you comment out wrap_mode(), it then shows line 0004 at the
top of the widget as expected.
Not sure the problem], just wanted to include a test program
that demonstrates the problem so it can more easily be investigated.
Adjusting the Summary for clarity:
BEFORE: Text_display scroll to line in wrap_mode
AFTER: Fl_Text_Display::scroll(line) not working with wrap_mode() | |
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| #3 | greg.ercolano
06:51 Jul 23, 2016 |
| Attaching a v2 test program that includes 2 buttons
to let one jump to line #1 or line #4. | |
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| #4 | AlbrechtS
15:21 Oct 01, 2016 |
| Changed priority to 2 (Low). This is a minor bug that should not block a release. | |
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| #5 | greg.ercolano
04:24 Oct 08, 2017 |
| Hmm, I think scroll() counting the 'post wrapped' lines.
So if a single line wraps into 3 separate lines, scroll() is counting
this as 3 separate lines, not as one line.
If that's the case, it seems to be working predictably,
though I don't think this is what anyone would or should expect
it to do. | |
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