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| author | fvogel <fvogelnew1@free.fr> | 2019-12-25 20:17:15 (GMT) |
|---|---|---|
| committer | fvogel <fvogelnew1@free.fr> | 2019-12-25 20:17:15 (GMT) |
| commit | c7dea872968dccc663429d1843a0e33cac7896d6 (patch) | |
| tree | 6cc351f99dfaf4ddd91e868453454f2770c0cd7f /doc | |
| parent | 67bffc15aeaa3d59587bbb081d9190f62c70490a (diff) | |
| download | tk-c7dea872968dccc663429d1843a0e33cac7896d6.zip tk-c7dea872968dccc663429d1843a0e33cac7896d6.tar.gz tk-c7dea872968dccc663429d1843a0e33cac7896d6.tar.bz2 | |
Fix [1660674fff]: arrow reconfig triggers infinite Enter/Leave event sequence, by better documenting the caveat.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/canvas.n | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/canvas.n b/doc/canvas.n index 7dbfd19..f446936 100644 --- a/doc/canvas.n +++ b/doc/canvas.n @@ -1523,6 +1523,12 @@ ends of the line. \fBlast\fR (for an arrowhead at the last point of the line), or \fBboth\fR (for arrowheads at both ends). This option defaults to \fBnone\fR. +When requested to draw an arrowhead, Tk internally adjusts the corresponding +line end point so that the rendered line ends at the neck of the arrowhead +rather than at its tip so that the line doesn't extend past the edge of the +arrowhead. This may trigger a \fBLeave\fR event if the mouse is hovering this +line end. Conversely, when removing an arrowhead Tk adjusts the corresponding +line point the other way round, which may trigger an \fBEnter\fR event. .TP \fB\-arrowshape \fIshape\fR This option indicates how to draw arrowheads. |