#811 Stipple patterns don't work in arc/oval items on Windows/Mac

[Brent B. Welch]

OriginalBugID: 1274 Bug
Version: 8.2
SubmitDate: '1999-02-23'
LastModified: '2000-04-03'
Severity: SER
Status: Assigned
Submitter: pat
ChangedBy: ericm
RelatedBugIDs: 1379 555 610 4081 4077 2495
OS: All Windows
Machine: X86

Name:
Christopher Nelson

ReproducibleScript:
canvas .c
pack .c
.c create oval 1i 1i 2i 2i -fill black -stipple gray50

ObservedBehavior:
The oval is drawn black, no fill pattern.

DesiredBehavior:
A 50% gray oval.

Stippling is not yet (as of 8.2.0 still) implement for non-Unix platforms.
-- 08/14/1999 hobbs
Some aspects of stippling work, but not most (see 4077, 4081).
-- 03/27/2000 hobbs

[Donal K. Fellows]

Confirmed in 8.3.0. And at the same time I noticed that thick ovals (-width 5) don't look to me to have a constant width on this Win98 machine at least. Strange...

[Bastien Chevreux]

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For 8.3.4, stippleborders work for polygons, but
not for rectangles (Win NT).

[Anonymous]

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As of TclTk 8.4.9 oval outlines, and the curved part of arc
outlines, do not stipple on _any_platform_!

[Jeffrey Hobbs]

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It most certainly works on unix, but remember that you need
to use -outlinestipple.

[Russell Owen]

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As of Aqua Tk 8.4.12 rectangles ignore stipple. I've not
tried other canvas shapes.

May I suggest adding a warning to the documentation about
using stipple on non-unix platforms?

[Donal K. Fellows]

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doc update applied; keeping open as it would still be nice
to fix the bug (if possible)

[Edward Brekelbaum]

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Is someone working on this bug? It impacts me directly, so
I will fix it if necessary. Please email me if I need to
fix this.

Thanks!

[Edward Brekelbaum]

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I have fixed the bug to my satisfaction on my machine. I'd
like someone to look it over for integration into the main
code. What is the best way to go about that?

Thanks!

The fix makes use of
http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnargdi/html/msdn_transblt.asp

It is about 60 lines of code. I am uncertain of the usage
of FillOpaqueStippled, so I am probably doing that wrong.

It seems possible to restructure the rectangle version to
be more like this, and possibly set up a function that both
could use.

[Nobody/Anonymous]

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I am posting the code in the patches section.

[Nobody/Anonymous]

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Xref: patch 1493260

[Peter Caffin]

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I've tested this bug using Tk 8.5.2.0.284581 (teapot) on both Windows XP Pro and Mac OS X 8.4.

The issue is still present on both platforms. Did the patch provided by 'nobody' on 2006-05-23 16:09 get tested or applied?

[Edward Brekelbaum]

I installed Activestate Tcl 8.5.5.0 a while back. This bug is still present. Is there some problem with the patch?

[Jan Nijtmans]

Still not fixed in Tk 8.6b1