[Kst] kst 2.0 : pan and zoom with cursor keys .. erratic?
Peter.Milne at d-tacq.com
Wed Aug 11 10:49:16 CEST 2010
Something that I've noticed appears to be in all versions of Kst 2.0,
but haven't been able to pin down:
A feature that is very useful is the cursor key PAN/ZOOM capability:
LEFT=PAN LEFT, RIGHT=PAN RIGHT,
SHIFT LEFT=X ZOOM IN, SHIFT RIGHT=X ZOOM OUT.
This works well for examining large data sets - pan at low zoom, zoom in
to region of interest, zoom out, pan again.
However, in my experience, the feature works some but not all the time
under Linux, and never works under Windows. It could be that I'm not
driving it correctly, but don't recall having any problem at all in
(Linux) Kst 1.8.
While testing for this message, in one session of Kst (Linux), one View
tab had working cursor keys, while another didn't. However, after saving
state, quitting Kst, re-run Kst, reload state, all the Views work ..
that is a reasonable work-around on Linux, but doesn't help on Win. On
Win, the only way to work is: right-click, zoom maximum, rubber-band
area of interest and zoom in - all very usable of course, but near
impossible to pan through zoomed data.
Another issue (cosmetic, but may be related) is displayed cursor state.
We start off with a cross hair.
PAN LEFT, PAN RIGHT : still a cross-hair : good
UP, DOWN : vertical axis pan : good
SHIFT LEFT : cursor changes to "Up Down Arrow", a horizontal guide line
appears, but the ZOOM IN function still works.
When the mouse pointer leaves the window, and returns, then we are back
to the cross hair.
SHIFT UP / SHIFT DOWN : cursor changes to "Up Down Arrow", and the
vertical range changes - Good.
To be consistent, the cursor should change to "Left Right Arrow" when
the X ZOOM IN, X ZOOM OUT functions are active. The cursor should reset
to "Cross Hair" when any of the PAN functions (no-shift L,R,U,D) are
Did anyone else see this?.
Is it a known feature?
Would two bug reports be helpful?
#1 Pan/Zoom feature broken (functional)
#2 Pointer shape change inconsistent (cosmetic).
Peter Milne Peter.Milne at d-tacq.com
D-TACQ Solutions Ltd www.d-tacq.com
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