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source: trunk/gui/scripts/barresult.tcl @ 1555

Last change on this file since 1555 was 1550, checked in by gah, 15 years ago

File size: 56.8 KB

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1
2	# ----------------------------------------------------------------------
3	# COMPONENT: barresult - X/Y plot in a ResultSet
4	#
5	# This widget is an X/Y plot, meant to view line graphs produced
6	# as output from the run of a Rappture tool. Use the "add" and
7	# "delete" methods to control the curves showing on the plot.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2005 Purdue Research Foundation
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17
18	option add *BarResult.width 3i widgetDefault
19	option add *BarResult.height 3i widgetDefault
20	option add *BarResult.gridColor #d9d9d9 widgetDefault
21	option add *BarResult.activeColor blue widgetDefault
22	option add *BarResult.dimColor gray widgetDefault
23	option add *BarResult.controlBackground gray widgetDefault
24	option add *BarResult.font \
25	--helvetica-medium-r-normal--12-* widgetDefault
26
27	set autocolors {
28	#0000ff #ff0000 #00cc00
29	#cc00cc #ff9900 #cccc00
30	#000080 #800000 #006600
31	#660066 #996600 #666600
32	}
33	set autocolors {
34	#0000cd
35	#cd0000
36	#00cd00
37	#3a5fcd
38	#cdcd00
39	#cd1076
40	#009acd
41	#00c5cd
42	#a2b5cd
43	#7ac5cd
44	#66cdaa
45	#a2cd5a
46	#cd9b9b
47	#cdba96
48	#cd3333
49	#cd6600
50	#cd8c95
51	#cd00cd
52	#9a32cd
53	#6ca6cd
54	#9ac0cd
55	#9bcd9b
56	#00cd66
57	#cdc673
58	#cdad00
59	#cd5555
60	#cd853f
61	#cd7054
62	#cd5b45
63	#cd6889
64	#cd69c9
65	#551a8b
66	}
67
68	option add *BarResult.autoColors $autocolors widgetDefault
69	option add BarResultBalloon*Entry.background white widgetDefault
70
71	itcl::class Rappture::BarResult {
72	inherit itk::Widget
73
74	itk_option define -gridcolor gridColor GridColor ""
75	itk_option define -activecolor activeColor ActiveColor ""
76	itk_option define -dimcolor dimColor DimColor ""
77	itk_option define -autocolors autoColors AutoColors ""
78
79	constructor {args} { # defined below }
80	destructor { # defined below }
81
82	public method add {curve {settings ""}}
83	public method get {}
84	public method delete {args}
85	public method scale {args}
86	public method parameters {title args} {
87	# do nothing
88	}
89	public method download {option args}
90
91	protected method _rebuild {}
92	protected method _resetLimits {}
93	protected method _zoom {option args}
94	protected method _hilite {state x y}
95	protected method _axis {option args}
96	protected method _getAxes {xydata}
97	protected method _getLineMarkerOptions { style }
98	protected method _getTextMarkerOptions { style }
99	protected method _enterMarker { g name x y text }
100	protected method _leaveMarker { g name }
101	private method _formatTickLabel { w value }
102
103	private variable _dispatcher "" ;# dispatcher for !events
104	private variable _clist "" ;# list of curve objects
105	private variable _curve2color ;# maps curve => plotting color
106	private variable _curve2width ;# maps curve => line width
107	private variable _curve2dashes ;# maps curve => BLT -dashes list
108	private variable _curve2raise ;# maps curve => raise flag 0/1
109	private variable _curve2desc ;# maps curve => description of data
110	private variable _elem2curve ;# maps graph element => curve
111	private variable _label2axis ;# maps axis label => axis ID
112	private variable _limits ;# axis limits: x-min, x-max, etc.
113	private variable _autoColorI 0 ;# index for next "-color auto"
114
115	private variable _hilite ;# info for element currently highlighted
116	private variable _axis ;# info for axis manipulations
117	private variable _axisPopup ;# info for axis being edited in popup
118	common _downloadPopup ;# download options from popup
119	private variable _markers
120	private variable cur_ ""
121	private variable initialized_ 0
122	private variable _tickLabels
123	}
124
125	itk::usual BarResult {
126	keep -background -foreground -cursor -font
127	}
128
129	itk::usual Panedwindow {
130	keep -background -cursor
131	}
132
133	# ----------------------------------------------------------------------
134	# CONSTRUCTOR
135	# ----------------------------------------------------------------------
136	itcl::body Rappture::BarResult::constructor {args} {
137	Rappture::dispatcher _dispatcher
138	$_dispatcher register !rebuild
139	$_dispatcher dispatch $this !rebuild "[itcl::code $this _rebuild]; list"
140
141	array set _downloadPopup {
142	format csv
143	}
144
145	option add hull.width hull.height
146	pack propagate $itk_component(hull) no
147
148	itk_component add main {
149	Rappture::SidebarFrame $itk_interior.main
150	}
151	pack $itk_component(main) -expand yes -fill both
152	set f [$itk_component(main) component controls]
153
154	itk_component add reset {
155	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
156	-highlightthickness 0 \
157	-image [Rappture::icon reset-view] \
158	-command [itcl::code $this _zoom reset]
159	} {
160	usual
161	ignore -borderwidth -highlightthickness
162	}
163	pack $itk_component(reset) -padx 4 -pady 2 -anchor e
164	Rappture::Tooltip::for $itk_component(reset) \
165	"Reset the view to the default zoom level"
166
167	set f [$itk_component(main) component frame]
168	itk_component add plot {
169	blt::barchart $f.plot \
170	-highlightthickness 0 -plotpadx 0 -plotpady 0 \
171	-barmode aligned -rightmargin 1
172	} {
173	keep -background -foreground -cursor -font
174	}
175	pack $itk_component(plot) -expand yes -fill both
176
177	$itk_component(plot) pen configure activeBar \
178	-borderwidth 2 -foreground black -background red
179
180	# Add bindings so you can mouse over points to see values:
181	bind $itk_component(plot) <Motion> \
182	[itcl::code $this _hilite at %x %y]
183	bind $itk_component(plot) <Leave> \
184	[itcl::code $this _hilite off %x %y]
185
186	# Add support for editing axes:
187	Rappture::Balloon $itk_component(hull).axes -title "Axis Options"
188	set inner [$itk_component(hull).axes component inner]
189
190	label $inner.labell -text "Label:"
191	entry $inner.label -width 15 -highlightbackground $itk_option(-background)
192	grid $inner.labell -row 1 -column 0 -sticky e
193	grid $inner.label -row 1 -column 1 -sticky ew -pady 4
194
195	label $inner.minl -text "Minimum:"
196	entry $inner.min -width 15 -highlightbackground $itk_option(-background)
197	grid $inner.minl -row 2 -column 0 -sticky e
198	grid $inner.min -row 2 -column 1 -sticky ew -pady 4
199
200	label $inner.maxl -text "Maximum:"
201	entry $inner.max -width 15 -highlightbackground $itk_option(-background)
202	grid $inner.maxl -row 3 -column 0 -sticky e
203	grid $inner.max -row 3 -column 1 -sticky ew -pady 4
204
205	label $inner.formatl -text "Format:"
206	Rappture::Combobox $inner.format -width 15 -editable no
207	$inner.format choices insert end \
208	"%.3g" "Auto" \
209	"%.0f" "X" \
210	"%.1f" "X.X" \
211	"%.2f" "X.XX" \
212	"%.3f" "X.XXX" \
213	"%.6f" "X.XXXXXX" \
214	"%.1e" "X.Xe+XX" \
215	"%.2e" "X.XXe+XX" \
216	"%.3e" "X.XXXe+XX" \
217	"%.6e" "X.XXXXXXe+XX"
218	grid $inner.formatl -row 4 -column 0 -sticky e
219	grid $inner.format -row 4 -column 1 -sticky ew -pady 4
220
221	label $inner.scalel -text "Scale:"
222	frame $inner.scales
223	radiobutton $inner.scales.linear -text "Linear" \
224	-variable [itcl::scope _axisPopup(scale)] -value "linear"
225	pack $inner.scales.linear -side left
226	radiobutton $inner.scales.log -text "Logarithmic" \
227	-variable [itcl::scope _axisPopup(scale)] -value "log"
228	pack $inner.scales.log -side left
229	grid $inner.scalel -row 5 -column 0 -sticky e
230	grid $inner.scales -row 5 -column 1 -sticky ew -pady 4
231
232	foreach axis {x y} {
233	set _axisPopup(format-$axis) "%.3g"
234	}
235	_axis scale x linear
236	_axis scale y linear
237
238	$itk_component(plot) legend configure -hide yes
239
240	#
241	# Add legend for editing hidden/elements:
242	#
243	set inner [$itk_component(main) insert end \
244	-title "Legend" \
245	-icon [Rappture::icon wrench]]
246	$inner configure -borderwidth 4
247
248	itk_component add legend {
249	Rappture::XyLegend $inner.legend $itk_component(plot)
250	}
251	pack $itk_component(legend) -expand yes -fill both
252
253	after idle [subst {
254	update idletasks
255	$itk_component(legend) reset
256	}]
257
258	# quick-and-dirty zoom functionality, for now...
259	Blt_ZoomStack $itk_component(plot)
260	eval itk_initialize $args
261
262	set _hilite(elem) ""
263	}
264
265	# ----------------------------------------------------------------------
266	# DESTRUCTOR
267	# ----------------------------------------------------------------------
268	itcl::body Rappture::BarResult::destructor {} {
269	}
270
271	# ----------------------------------------------------------------------
272	# USAGE: add <curve> ?<settings>?
273	#
274	# Clients use this to add a curve to the plot. The optional <settings>
275	# are used to configure the plot. Allowed settings are -color,
276	# -brightness, -width, -linestyle and -raise.
277	# ----------------------------------------------------------------------
278	itcl::body Rappture::BarResult::add {curve {settings ""}} {
279	array set params {
280	-color auto
281	-brightness 0
282	-width 1
283	-type "bar"
284	-raise 0
285	-linestyle solid
286	-description ""
287	-param ""
288	}
289	foreach {opt val} $settings {
290	if {![info exists params($opt)]} {
291	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
292	}
293	set params($opt) $val
294	}
295
296	# if the color is "auto", then select a color from -autocolors
297	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
298	if {$params(-color) == "autoreset"} {
299	set _autoColorI 0
300	}
301	set color [lindex $itk_option(-autocolors) $_autoColorI]
302	if {"" == $color} { set color black }
303	set params(-color) $color
304
305	# set up for next auto color
306	if {[incr _autoColorI] >= [llength $itk_option(-autocolors)]} {
307	set _autoColorI 0
308	}
309	}
310
311	# convert -linestyle to BLT -dashes
312	switch -- $params(-linestyle) {
313	dashed { set params(-linestyle) {4 4} }
314	dotted { set params(-linestyle) {2 4} }
315	default { set params(-linestyle) {} }
316	}
317
318	# if -brightness is set, then update the color
319	if {$params(-brightness) != 0} {
320	set params(-color) [Rappture::color::brightness \
321	$params(-color) $params(-brightness)]
322
323	set bg [$itk_component(plot) cget -plotbackground]
324	foreach {h s v} [Rappture::color::RGBtoHSV $bg] break
325	if {$v > 0.5} {
326	set params(-color) [Rappture::color::brightness_max \
327	$params(-color) 0.8]
328	} else {
329	set params(-color) [Rappture::color::brightness_min \
330	$params(-color) 0.2]
331	}
332	}
333
334	set pos [lsearch -exact $curve $_clist]
335	if {$pos < 0} {
336	lappend _clist $curve
337	set _curve2color($curve) $params(-color)
338	set _curve2width($curve) $params(-width)
339	set _curve2dashes($curve) $params(-linestyle)
340	set _curve2raise($curve) $params(-raise)
341	set _curve2desc($curve) $params(-description)
342
343	$_dispatcher event -idle !rebuild
344	}
345	}
346
347	# ----------------------------------------------------------------------
348	# USAGE: get
349	#
350	# Clients use this to query the list of objects being plotted, in
351	# order from bottom to top of this result.
352	# ----------------------------------------------------------------------
353	itcl::body Rappture::BarResult::get {} {
354	# put the dataobj list in order according to -raise options
355	set clist $_clist
356	foreach obj $clist {
357	if {[info exists _curve2raise($obj)] && $_curve2raise($obj)} {
358	set i [lsearch -exact $clist $obj]
359	if {$i >= 0} {
360	set clist [lreplace $clist $i $i]
361	lappend clist $obj
362	}
363	}
364	}
365	return $clist
366	}
367
368	# ----------------------------------------------------------------------
369	# USAGE: delete ?<curve1> <curve2> ...?
370	#
371	# Clients use this to delete a curve from the plot. If no curves
372	# are specified, then all curves are deleted.
373	# ----------------------------------------------------------------------
374	itcl::body Rappture::BarResult::delete {args} {
375	if {[llength $args] == 0} {
376	set args $_clist
377	}
378
379	# delete all specified curves
380	set changed 0
381	foreach curve $args {
382	set pos [lsearch -exact $_clist $curve]
383	if {$pos >= 0} {
384	set _clist [lreplace $_clist $pos $pos]
385	catch {unset _curve2color($curve)}
386	catch {unset _curve2width($curve)}
387	catch {unset _curve2dashes($curve)}
388	catch {unset _curve2raise($curve)}
389	foreach elem [array names _elem2curve] {
390	if {$_elem2curve($elem) == $curve} {
391	unset _elem2curve($elem)
392	}
393	}
394	set changed 1
395	}
396	}
397
398	# If anything changed, then rebuild the plot
399	if {$changed} {
400	$_dispatcher event -idle !rebuild
401	}
402
403	# Nothing left? then start over with auto colors
404	if {[llength $_clist] == 0} {
405	set _autoColorI 0
406	}
407	}
408
409	# ----------------------------------------------------------------------
410	# USAGE: scale ?<curve1> <curve2> ...?
411	#
412	# Sets the default limits for the overall plot according to the
413	# limits of the data for all of the given <curve> objects. This
414	# accounts for all curves--even those not showing on the screen.
415	# Because of this, the limits are appropriate for all curves as
416	# the user scans through data in the ResultSet viewer.
417	# ----------------------------------------------------------------------
418	itcl::body Rappture::BarResult::scale {args} {
419	set allx [$itk_component(plot) x2axis use]
420	lappend allx x ;# fix main x-axis too
421	foreach axis $allx {
422	_axis scale $axis linear
423	}
424
425	set ally [$itk_component(plot) y2axis use]
426	lappend ally y ;# fix main y-axis too
427	foreach axis $ally {
428	_axis scale $axis linear
429	}
430
431	catch {unset _limits}
432	foreach xydata $args {
433	# find the axes for this curve (e.g., {x y2})
434	foreach {map(x) map(y)} [_getAxes $xydata] break
435
436	foreach axis {x y} {
437	# get defaults for both linear and log scales
438	foreach type {lin log} {
439	# store results -- ex: _limits(x2log-min)
440	set id $map($axis)$type
441	foreach {min max} [$xydata limits $axis$type] break
442	if {"" != $min && "" != $max} {
443	if {![info exists _limits($id-min)]} {
444	set _limits($id-min) $min
445	set _limits($id-max) $max
446	} else {
447	if {$min < $_limits($id-min)} {
448	set _limits($id-min) $min
449	}
450	if {$max > $_limits($id-max)} {
451	set _limits($id-max) $max
452	}
453	}
454	}
455	}
456
457	if {[$xydata hints ${axis}scale] == "log"} {
458	_axis scale $map($axis) log
459	}
460	}
461	}
462	_resetLimits
463	}
464
465	# ----------------------------------------------------------------------
466	# USAGE: download coming
467	# USAGE: download controls <downloadCommand>
468	# USAGE: download now
469	#
470	# Clients use this method to create a downloadable representation
471	# of the plot. Returns a list of the form {ext string}, where
472	# "ext" is the file extension (indicating the type of data) and
473	# "string" is the data itself.
474	# ----------------------------------------------------------------------
475	itcl::body Rappture::BarResult::download {option args} {
476	switch $option {
477	coming {
478	# nothing to do
479	}
480	controls {
481	set popup .barresultdownload
482	if {![winfo exists .barresultdownload]} {
483	# if we haven't created the popup yet, do it now
484	Rappture::Balloon $popup -title "[Rappture::filexfer::label downloadWord] as..."
485	set inner [$popup component inner]
486	label $inner.summary -text "" -anchor w
487	pack $inner.summary -side top
488	radiobutton $inner.csv -text "Data as Comma-Separated Values" \
489	-variable Rappture::BarResult::_downloadPopup(format) \
490	-value csv
491	pack $inner.csv -anchor w
492	radiobutton $inner.pdf -text "Image as PDF/PostScript" \
493	-variable Rappture::BarResult::_downloadPopup(format) \
494	-value pdf
495	pack $inner.pdf -anchor w
496	radiobutton $inner.jpg -text "Image (draft)" \
497	-variable Rappture::BarResult::_downloadPopup(format) \
498	-value jpg
499	pack $inner.jpg -anchor w
500	button $inner.go -text [Rappture::filexfer::label download] \
501	-command [lindex $args 0]
502	pack $inner.go -pady 4
503	} else {
504	set inner [$popup component inner]
505	}
506	set num [llength [get]]
507	set num [expr {($num == 1) ? "1 result" : "$num results"}]
508	$inner.summary configure -text "[Rappture::filexfer::label downloadWord] $num in the following format:"
509	update idletasks ;# fix initial sizes
510	return $popup
511	}
512	now {
513	set popup .barresultdownload
514	if {[winfo exists .barresultdownload]} {
515	$popup deactivate
516	}
517	switch -- $_downloadPopup(format) {
518	csv {
519	# reverse the objects so the selected data appears on top
520	set dlist ""
521	foreach dataobj [get] {
522	set dlist [linsert $dlist 0 $dataobj]
523	}
524
525	# generate the comma-separated value data for these objects
526	set csvdata ""
527	foreach dataobj $dlist {
528	append csvdata "[string repeat - 60]\n"
529	append csvdata " [$dataobj hints label]\n"
530	if {[info exists _curve2desc($dataobj)]
531	&& [llength [split $_curve2desc($dataobj) \n]] > 1} {
532	set indent "for:"
533	foreach line [split $_curve2desc($dataobj) \n] {
534	append csvdata " $indent $line\n"
535	set indent " "
536	}
537	}
538	append csvdata "[string repeat - 60]\n"
539
540	append csvdata "[$dataobj hints xlabel], [$dataobj hints ylabel]\n"
541	set first 1
542	foreach comp [$dataobj components] {
543	if {!$first} {
544	# blank line between components
545	append csvdata "\n"
546	}
547	set xv [$dataobj mesh $comp]
548	set yv [$dataobj values $comp]
549	foreach x [$xv range 0 end] y [$yv range 0 end] {
550	append csvdata [format "%20.15g, %20.15g\n" $x $y]
551	}
552	set first 0
553	}
554	append csvdata "\n"
555	}
556	return [list .txt $csvdata]
557	}
558	pdf {
559	set psdata [$itk_component(plot) postscript output \
560	-decorations no -maxpect 1]
561
562	set cmds {
563	set fout "xy[pid].pdf"
564	exec ps2pdf - $fout << $psdata
565
566	set fid [open $fout r]
567	fconfigure $fid -translation binary -encoding binary
568	set pdfdata [read $fid]
569	close $fid
570
571	file delete -force $fout
572	}
573	if {[catch $cmds result] == 0} {
574	return [list .pdf $pdfdata]
575	}
576	return [list .ps $psdata]
577	}
578	jpg {
579	set img [image create photo]
580	$itk_component(plot) snap $img
581	set bytes [$img data -format "jpeg -quality 100"]
582	set bytes [Rappture::encoding::decode -as b64 $bytes]
583	image delete $img
584	return [list .jpg $bytes]
585	}
586	png {
587	set img [image create photo]
588	$itk_component(plot) snap $img
589	set bytes [$img data -format "png"]
590	set bytes [Rappture::encoding::decode -as b64 $bytes]
591	image delete $img
592	return [list .png $bytes]
593	}
594	}
595	}
596	default {
597	error "bad option \"$option\": should be coming, controls, now"
598	}
599	}
600	}
601
602	# ----------------------------------------------------------------------
603	# USAGE: _rebuild
604	#
605	# Called automatically whenever something changes that affects the
606	# data in the widget. Clears any existing data and rebuilds the
607	# widget to display new data.
608	# ----------------------------------------------------------------------
609	itcl::body Rappture::BarResult::_rebuild {} {
610	set g $itk_component(plot)
611
612	# first clear out the widget
613	eval $g element delete [$g element names]
614	foreach axis [$g axis names] {
615	$g axis configure $axis -hide yes -checklimits no -loose yes
616	}
617	# Presumably you want at least an X-axis and Y-axis displayed.
618	$g xaxis configure -hide no
619	$g yaxis configure -hide no
620	array unset _label2axis
621
622	#
623	# Scan through all objects and create a list of all axes.
624	# The first x-axis gets mapped to "x". The second, to "x2".
625	# Beyond that, we must create new axes "x3", "x4", etc.
626	# We do the same for y.
627	#
628	set anum(x) 0
629	set anum(y) 0
630	foreach xydata [get] {
631	foreach ax {x y} {
632	set label [$xydata hints ${ax}label]
633	if {"" != $label} {
634	if {![info exists _label2axis($ax-$label)]} {
635	switch [incr anum($ax)] {
636	1 { set axis $ax }
637	2 { set axis ${ax}2 }
638	default {
639	set axis $ax$anum($ax)
640	catch {$g axis create $axis}
641	}
642	}
643	$g axis configure $axis -title $label -hide no \
644	-checklimits no
645	set _label2axis($ax-$label) $axis
646
647	# if this axis has a description, add it as a tooltip
648	set desc [string trim [$xydata hints ${ax}desc]]
649	Rappture::Tooltip::text $g-$axis $desc
650	}
651	}
652	}
653	}
654
655	#
656	# All of the extra axes get mapped to the x2/y2 (top/right)
657	# position.
658	#
659	set all ""
660	foreach ax {x y} {
661	lappend all $ax
662
663	set extra ""
664	for {set i 2} {$i <= $anum($ax)} {incr i} {
665	lappend extra ${ax}$i
666	}
667	eval lappend all $extra
668	$g ${ax}2axis use $extra
669	if {$ax == "y"} {
670	$g configure -rightmargin [expr {($extra == "") ? 10 : 0}]
671	}
672	}
673
674	foreach axis $all {
675	set _axisPopup(format-$axis) "%.3g"
676
677	$g axis bind $axis <Enter> \
678	[itcl::code $this _axis hilite $axis on]
679	$g axis bind $axis <Leave> \
680	[itcl::code $this _axis hilite $axis off]
681	$g axis bind $axis <ButtonPress> \
682	[itcl::code $this _axis click $axis %x %y]
683	$g axis bind $axis <B1-Motion> \
684	[itcl::code $this _axis drag $axis %x %y]
685	$g axis bind $axis <ButtonRelease> \
686	[itcl::code $this _axis release $axis %x %y]
687	$g axis bind $axis <KeyPress> \
688	[list ::Rappture::Tooltip::tooltip cancel]
689	}
690
691	#
692	# Plot all of the curves.
693	#
694	set count 0
695	foreach xydata $_clist {
696	set label [$xydata hints label]
697	foreach {mapx mapy} [_getAxes $xydata] break
698
699	foreach comp [$xydata components] {
700	set xv [$xydata mesh $comp]
701	set yv [$xydata values $comp]
702
703	if {[info exists _curve2color($xydata)]} {
704	set color $_curve2color($xydata)
705	} else {
706	set color [$xydata hints color]
707	if {"" == $color} {
708	set color black
709	}
710	}
711
712	if {[info exists _curve2width($xydata)]} {
713	set lwidth $_curve2width($xydata)
714	} else {
715	set lwidth 2
716	}
717
718	if {[info exists _curve2dashes($xydata)]} {
719	set dashes $_curve2dashes($xydata)
720	} else {
721	set dashes ""
722	}
723
724	if {([$xv length] <= 1) \|\| ($lwidth == 0)} {
725	set sym square
726	set pixels 2
727	} else {
728	set sym ""
729	set pixels 6
730	}
731
732	set elem "elem[incr count]"
733	set _elem2curve($elem) $xydata
734	set labels [$xydata hints xticks]
735	if { $labels != "" } {
736	$g axis configure $mapx \
737	-command [itcl::code $this _formatTickLabel] \
738	-minorticks 0
739	set _tickLabels $labels
740	}
741	$g element create $elem -x $xv -y $yv \
742	-borderwidth $lwidth -label $label \
743	-background $color -foreground $color -mapx $mapx -mapy $mapy
744	}
745	}
746
747	foreach xydata $_clist {
748	set xmin -Inf
749	set ymin -Inf
750	set xmax Inf
751	set ymax Inf
752	#
753	# Create text/line markers for each *axis.marker specified.
754	#
755	foreach m [$xydata xmarkers] {
756	foreach {at label style} $m break
757	set id [$g marker create line -coords [list $at $ymin $at $ymax]]
758	$g marker bind $id <Enter> \
759	[itcl::code $this _enterMarker $g x-$label $at $ymin $at]
760	$g marker bind $id <Leave> \
761	[itcl::code $this _leaveMarker $g x-$label]
762	set options [_getLineMarkerOptions $style]
763	if { $options != "" } {
764	eval $g marker configure $id $options
765	}
766	if { $label != "" } {
767	set id [$g marker create text -anchor nw \
768	-text $label -coords [list $at $ymax]]
769	set options [_getTextMarkerOptions $style]
770	if { $options != "" } {
771	eval $g marker configure $id $options
772	}
773	}
774	}
775	foreach m [$xydata ymarkers] {
776	foreach {at label style} $m break
777	set id [$g marker create line -coords [list $xmin $at $xmax $at]]
778	$g marker bind $id <Enter> \
779	[itcl::code $this _enterMarker $g y-$label $at $xmin $at]
780	$g marker bind $id <Leave> \
781	[itcl::code $this _leaveMarker $g y-$label]
782	set options [_getLineMarkerOptions $style]
783	if { $options != "" } {
784	eval $g marker configure $id $options
785	}
786	if { $label != "" } {
787	set id [$g marker create text -anchor se \
788	-text $label -coords [list $xmax $at]]
789	set options [_getTextMarkerOptions $style]
790	if { $options != "" } {
791	eval $g marker configure $id $options
792	}
793	}
794	}
795	}
796	$itk_component(legend) reset
797	}
798
799	# ----------------------------------------------------------------------
800	# USAGE: _resetLimits
801	#
802	# Used internally to apply automatic limits to the axes for the
803	# current plot.
804	# ----------------------------------------------------------------------
805	itcl::body Rappture::BarResult::_resetLimits {} {
806	set g $itk_component(plot)
807	foreach axis [$g axis names] {
808	$g axis configure $axis -min "" -max ""
809	}
810	return
811
812	#
813	# HACK ALERT!
814	# Use this code to fix up the y-axis limits for the BLT graph.
815	# The auto-limits don't always work well. We want them to be
816	# set to a "nice" number slightly above or below the min/max
817	# limits.
818	#
819	foreach axis [$g axis names] {
820	if {[info exists _limits(${axis}lin-min)]} {
821	set log [$g axis cget $axis -logscale]
822	if {$log} {
823	set min $_limits(${axis}log-min)
824	if {$min == 0} { set min 1 }
825	set max $_limits(${axis}log-max)
826	if {$max == 0} { set max 1 }
827
828	if {$min == $max} {
829	set logmin [expr {floor(log10(abs(0.9*$min)))}]
830	set logmax [expr {ceil(log10(abs(1.1*$max)))}]
831	} else {
832	set logmin [expr {floor(log10(abs($min)))}]
833	set logmax [expr {ceil(log10(abs($max)))}]
834	if {[string match y* $axis]} {
835	# add a little padding
836	set delta [expr {$logmax-$logmin}]
837	if {$delta == 0} { set delta 1 }
838	set logmin [expr {$logmin-0.05*$delta}]
839	set logmax [expr {$logmax+0.05*$delta}]
840	}
841	}
842	if {$logmin < -300} {
843	set min 1e-300
844	} elseif {$logmin > 300} {
845	set min 1e+300
846	} else {
847	set min [expr {pow(10.0,$logmin)}]
848	}
849
850	if {$logmax < -300} {
851	set max 1e-300
852	} elseif {$logmax > 300} {
853	set max 1e+300
854	} else {
855	set max [expr {pow(10.0,$logmax)}]
856	}
857	} else {
858	set min $_limits(${axis}lin-min)
859	set max $_limits(${axis}lin-max)
860
861	if {[string match y* $axis]} {
862	# add a little padding
863	set delta [expr {$max-$min}]
864	set min [expr {$min-0.05*$delta}]
865	set max [expr {$max+0.05*$delta}]
866	}
867	}
868	if {$min < $max} {
869	$g axis configure $axis -min $min -max $max
870	} else {
871	$g axis configure $axis -min "" -max ""
872	}
873	} else {
874	$g axis configure $axis -min "" -max ""
875	}
876	}
877	}
878
879	# ----------------------------------------------------------------------
880	# USAGE: _zoom reset
881	#
882	# Called automatically when the user clicks on one of the zoom
883	# controls for this widget. Changes the zoom for the current view.
884	# ----------------------------------------------------------------------
885	itcl::body Rappture::BarResult::_zoom {option args} {
886	switch -- $option {
887	reset {
888	_resetLimits
889	}
890	}
891	}
892
893	# ----------------------------------------------------------------------
894	# USAGE: _hilite <state> <x> <y>
895	#
896	# Called automatically when the user brushes one of the elements
897	# on the plot. Causes the element to highlight and a tooltip to
898	# pop up with element info.
899	# ----------------------------------------------------------------------
900	itcl::body Rappture::BarResult::_hilite {state x y} {
901	set g $itk_component(plot)
902	set elem ""
903
904	# Peek inside of Blt_ZoomStack package to see if we're currently in the
905	# middle of a zoom selection.
906	if {[info exists ::zoomInfo($g,corner)] && $::zoomInfo($g,corner) == "B" } {
907	return;
908	}
909	set tip ""
910	if {$state == "at"} {
911	if {[$g element closest $x $y info -interpolate yes]} {
912	# for dealing with xy line plots
913	set elem $info(name)
914
915	# Some elements are generated dynamically and therefore will
916	# not have a curve object associated with them.
917	set mapx [$g element cget $elem -mapx]
918	set mapy [$g element cget $elem -mapy]
919	if {[info exists _elem2curve($elem)]} {
920	foreach {mapx mapy} [_getAxes $_elem2curve($elem)] break
921	}
922
923	# search again for an exact point -- this time don't interpolate
924	set tip ""
925	array unset info
926	if {[$g element closest $x $y info -interpolate no]
927	&& $info(name) == $elem} {
928
929	set x [$g axis transform $mapx $info(x)]
930	set y [$g axis transform $mapy $info(y)]
931
932	if {[info exists _elem2curve($elem)]} {
933	set curve $_elem2curve($elem)
934	set yunits [$curve hints yunits]
935	set xunits [$curve hints xunits]
936	} else {
937	set xunits ""
938	set yunits ""
939	}
940	set tip [$g element cget $elem -label]
941	set yval [_axis format y dummy $info(y)]
942	append tip "\n$yval$yunits"
943	set xval [_axis format x dummy $info(x)]
944	append tip " @ $xval$xunits"
945	set tip [string trim $tip]
946	}
947	set state 1
948	} elseif {[$g element closest $x $y info -interpolate no]} {
949	# for dealing with xy scatter plot
950	set elem $info(name)
951
952	# Some elements are generated dynamically and therefore will
953	# not have a curve object associated with them.
954	set mapx [$g element cget $elem -mapx]
955	set mapy [$g element cget $elem -mapy]
956	if {[info exists _elem2curve($elem)]} {
957	foreach {mapx mapy} [_getAxes $_elem2curve($elem)] break
958	}
959
960	set tip ""
961	set x [$g axis transform $mapx $info(x)]
962	set y [$g axis transform $mapy $info(y)]
963
964	if {[info exists _elem2curve($elem)]} {
965	set curve $_elem2curve($elem)
966	set yunits [$curve hints yunits]
967	set xunits [$curve hints xunits]
968	} else {
969	set xunits ""
970	set yunits ""
971	}
972	set tip [$g element cget $elem -label]
973	set yval [_axis format y dummy $info(y)]
974	append tip "\n$yval$yunits"
975	set xval [_axis format x dummy $info(x)]
976	append tip " @ $xval$xunits"
977	set tip [string trim $tip]
978	set state 1
979	} else {
980	set state 0
981	}
982	}
983
984	if {$state} {
985	#
986	# Highlight ON:
987	# - activate trace
988	# - multiple axes? dim other axes
989	# - pop up tooltip about data
990	#
991	if { [$g element exists $_hilite(elem)] && $_hilite(elem) != $elem } {
992	$g element deactivate $_hilite(elem)
993	$g crosshairs configure -hide yes
994	Rappture::Tooltip::tooltip cancel
995	}
996	set bg [$g element cget $elem -background]
997	set fg [$g element cget $elem -background]
998	foreach {h s v} [Rappture::color::RGBtoHSV $fg] break
999	if { $v > 0.2 } {
1000	set v [expr $v - 0.2]
1001	}
1002	set fg [Rappture::color::HSVtoRGB $h $s $v]
1003	$g pen configure activeBar -background $bg -foreground $fg
1004	$g element activate $elem
1005	set _hilite(elem) $elem
1006
1007	set mapx [$g element cget $elem -mapx]
1008	set mapy [$g element cget $elem -mapy]
1009	if {[info exists _elem2curve($elem)]} {
1010	foreach {mapx mapy} [_getAxes $_elem2curve($elem)] break
1011	}
1012	set allx [$g x2axis use]
1013	if {[llength $allx] > 0} {
1014	lappend allx x ;# fix main x-axis too
1015	foreach axis $allx {
1016	if {$axis == $mapx} {
1017	$g axis configure $axis -color $itk_option(-foreground) \
1018	-titlecolor $itk_option(-foreground)
1019	} else {
1020	$g axis configure $axis -color $itk_option(-dimcolor) \
1021	-titlecolor $itk_option(-dimcolor)
1022	}
1023	}
1024	}
1025	set ally [$g y2axis use]
1026	if {[llength $ally] > 0} {
1027	lappend ally y ;# fix main y-axis too
1028	foreach axis $ally {
1029	if {$axis == $mapy} {
1030	$g axis configure $axis -color $itk_option(-foreground) \
1031	-titlecolor $itk_option(-foreground)
1032	} else {
1033	$g axis configure $axis -color $itk_option(-dimcolor) \
1034	-titlecolor $itk_option(-dimcolor)
1035	}
1036	}
1037	}
1038
1039	if {"" != $tip} {
1040	$g crosshairs configure -hide no -position @$x,$y
1041
1042	if {$x > 0.5*[winfo width $g]} {
1043	if {$x < 4} {
1044	set tipx "-0"
1045	} else {
1046	set tipx "-[expr {$x-4}]" ;# move tooltip to the left
1047	}
1048	} else {
1049	if {$x < -4} {
1050	set tipx "+0"
1051	} else {
1052	set tipx "+[expr {$x+4}]" ;# move tooltip to the right
1053	}
1054	}
1055	if {$y > 0.5*[winfo height $g]} {
1056	if {$y < 4} {
1057	set tipy "-0"
1058	} else {
1059	set tipy "-[expr {$y-4}]" ;# move tooltip to the top
1060	}
1061	} else {
1062	if {$y < -4} {
1063	set tipy "+0"
1064	} else {
1065	set tipy "+[expr {$y+4}]" ;# move tooltip to the bottom
1066	}
1067	}
1068	Rappture::Tooltip::text $g $tip
1069	Rappture::Tooltip::tooltip show $g $tipx,$tipy
1070	}
1071	} else {
1072	#
1073	# Highlight OFF:
1074	# - deactivate (color back to normal)
1075	# - put all axes back to normal color
1076	# - take down tooltip
1077	#
1078	if { [$g element exists $_hilite(elem)] } {
1079	$g element deactivate $_hilite(elem)
1080	}
1081	set allx [$g x2axis use]
1082	if {[llength $allx] > 0} {
1083	lappend allx x ;# fix main x-axis too
1084	foreach axis $allx {
1085	$g axis configure $axis -color $itk_option(-foreground) \
1086	-titlecolor $itk_option(-foreground)
1087	}
1088	}
1089
1090	set ally [$g y2axis use]
1091	if {[llength $ally] > 0} {
1092	lappend ally y ;# fix main y-axis too
1093	foreach axis $ally {
1094	$g axis configure $axis -color $itk_option(-foreground) \
1095	-titlecolor $itk_option(-foreground)
1096	}
1097	}
1098
1099	$g crosshairs configure -hide yes
1100
1101	# only cancel in plotting area or we'll mess up axes
1102	if {[$g inside $x $y]} {
1103	Rappture::Tooltip::tooltip cancel
1104	}
1105
1106	# There is no currently highlighted element
1107	set _hilite(elem) ""
1108	}
1109	}
1110
1111	# ----------------------------------------------------------------------
1112	# USAGE: _axis hilite <axis> <state>
1113	#
1114	# USAGE: _axis click <axis> <x> <y>
1115	# USAGE: _axis drag <axis> <x> <y>
1116	# USAGE: _axis release <axis> <x> <y>
1117	#
1118	# USAGE: _axis edit <axis>
1119	# USAGE: _axis changed <axis> <what>
1120	# USAGE: _axis format <axis> <widget> <value>
1121	# USAGE: _axis scale <axis> linear\|log
1122	#
1123	# Used internally to handle editing of the x/y axes. The hilite
1124	# operation causes the axis to light up. The edit operation pops
1125	# up a panel with editing options. The changed operation applies
1126	# changes from the panel.
1127	# ----------------------------------------------------------------------
1128	itcl::body Rappture::BarResult::_axis {option args} {
1129	set inner [$itk_component(hull).axes component inner]
1130
1131	switch -- $option {
1132	hilite {
1133	if {[llength $args] != 2} {
1134	error "wrong # args: should be \"_axis hilite axis state\""
1135	}
1136	set g $itk_component(plot)
1137	set axis [lindex $args 0]
1138	set state [lindex $args 1]
1139
1140	if {$state} {
1141	$g axis configure $axis \
1142	-color $itk_option(-activecolor) \
1143	-titlecolor $itk_option(-activecolor)
1144
1145	set x [expr {[winfo pointerx $g]+4}]
1146	set y [expr {[winfo pointery $g]+4}]
1147	Rappture::Tooltip::tooltip pending $g-$axis @$x,$y
1148	} else {
1149	$g axis configure $axis \
1150	-color $itk_option(-foreground) \
1151	-titlecolor $itk_option(-foreground)
1152	Rappture::Tooltip::tooltip cancel
1153	}
1154	}
1155	click {
1156	if {[llength $args] != 3} {
1157	error "wrong # args: should be \"_axis click axis x y\""
1158	}
1159	set axis [lindex $args 0]
1160	set x [lindex $args 1]
1161	set y [lindex $args 2]
1162	set g $itk_component(plot)
1163
1164	set _axis(moved) 0
1165	set _axis(click-x) $x
1166	set _axis(click-y) $y
1167	foreach {min max} [$g axis limits $axis] break
1168	set _axis(min0) $min
1169	set _axis(max0) $max
1170	Rappture::Tooltip::tooltip cancel
1171	}
1172	drag {
1173	if {[llength $args] != 3} {
1174	error "wrong # args: should be \"_axis drag axis x y\""
1175	}
1176	if {![info exists _axis(moved)]} {
1177	return ;# must have skipped click event -- ignore
1178	}
1179	set axis [lindex $args 0]
1180	set x [lindex $args 1]
1181	set y [lindex $args 2]
1182	set g $itk_component(plot)
1183
1184	if {[info exists _axis(click-x)] && [info exists _axis(click-y)]} {
1185	foreach {x0 y0 pw ph} [$g extents plotarea] break
1186	switch -glob $axis {
1187	x* {
1188	set pix $x
1189	set pix0 $_axis(click-x)
1190	set pixmin $x0
1191	set pixmax [expr {$x0+$pw}]
1192	}
1193	y* {
1194	set pix $y
1195	set pix0 $_axis(click-y)
1196	set pixmin [expr {$y0+$ph}]
1197	set pixmax $y0
1198	}
1199	}
1200	set log [$g axis cget $axis -logscale]
1201	set min $_axis(min0)
1202	set max $_axis(max0)
1203	set dpix [expr {abs($pix-$pix0)}]
1204	set v0 [$g axis invtransform $axis $pixmin]
1205	set v1 [$g axis invtransform $axis [expr {$pixmin+$dpix}]]
1206	if {$log} {
1207	set v0 [expr {log10($v0)}]
1208	set v1 [expr {log10($v1)}]
1209	set min [expr {log10($min)}]
1210	set max [expr {log10($max)}]
1211	}
1212
1213	if {$pix > $pix0} {
1214	set delta [expr {$v1-$v0}]
1215	} else {
1216	set delta [expr {$v0-$v1}]
1217	}
1218	set min [expr {$min-$delta}]
1219	set max [expr {$max-$delta}]
1220	if {$log} {
1221	set min [expr {pow(10.0,$min)}]
1222	set max [expr {pow(10.0,$max)}]
1223	}
1224	$g axis configure $axis -min $min -max $max
1225
1226	# move axis, don't edit on release
1227	set _axis(move) 1
1228	}
1229	}
1230	release {
1231	if {[llength $args] != 3} {
1232	error "wrong # args: should be \"_axis release axis x y\""
1233	}
1234	if {![info exists _axis(moved)]} {
1235	return ;# must have skipped click event -- ignore
1236	}
1237	set axis [lindex $args 0]
1238	set x [lindex $args 1]
1239	set y [lindex $args 2]
1240
1241	if {!$_axis(moved)} {
1242	# small movement? then treat as click -- pop up axis editor
1243	set dx [expr {abs($x-$_axis(click-x))}]
1244	set dy [expr {abs($y-$_axis(click-y))}]
1245	if {$dx < 2 && $dy < 2} {
1246	_axis edit $axis
1247	}
1248	} else {
1249	# one last movement
1250	_axis drag $axis $x $y
1251	}
1252	catch {unset _axis}
1253	}
1254	edit {
1255	if {[llength $args] != 1} {
1256	error "wrong # args: should be \"_axis edit axis\""
1257	}
1258	set axis [lindex $args 0]
1259	set _axisPopup(current) $axis
1260
1261	# apply last value when deactivating
1262	$itk_component(hull).axes configure -deactivatecommand \
1263	[itcl::code $this _axis changed $axis focus]
1264
1265	# fix axis label controls...
1266	set label [$itk_component(plot) axis cget $axis -title]
1267	$inner.label delete 0 end
1268	$inner.label insert end $label
1269	bind $inner.label <KeyPress-Return> \
1270	[itcl::code $this _axis changed $axis label]
1271	bind $inner.label <FocusOut> \
1272	[itcl::code $this _axis changed $axis label]
1273
1274	# fix min/max controls...
1275	foreach {min max} [$itk_component(plot) axis limits $axis] break
1276	$inner.min delete 0 end
1277	$inner.min insert end $min
1278	bind $inner.min <KeyPress-Return> \
1279	[itcl::code $this _axis changed $axis min]
1280	bind $inner.min <FocusOut> \
1281	[itcl::code $this _axis changed $axis min]
1282
1283	$inner.max delete 0 end
1284	$inner.max insert end $max
1285	bind $inner.max <KeyPress-Return> \
1286	[itcl::code $this _axis changed $axis max]
1287	bind $inner.max <FocusOut> \
1288	[itcl::code $this _axis changed $axis max]
1289
1290	# fix format control...
1291	set fmts [$inner.format choices get -value]
1292	set i [lsearch -exact $fmts $_axisPopup(format-$axis)]
1293	if {$i < 0} { set i 0 } ;# use Auto choice
1294	$inner.format value [$inner.format choices get -label $i]
1295
1296	bind $inner.format <<Value>> \
1297	[itcl::code $this _axis changed $axis format]
1298
1299	# fix scale control...
1300	if {[$itk_component(plot) axis cget $axis -logscale]} {
1301	set _axisPopup(scale) "log"
1302	$inner.format configure -state disabled
1303	} else {
1304	set _axisPopup(scale) "linear"
1305	$inner.format configure -state normal
1306	}
1307	$inner.scales.linear configure \
1308	-command [itcl::code $this _axis changed $axis scale]
1309	$inner.scales.log configure \
1310	-command [itcl::code $this _axis changed $axis scale]
1311
1312	#
1313	# Figure out where the window should pop up.
1314	#
1315	set x [winfo rootx $itk_component(plot)]
1316	set y [winfo rooty $itk_component(plot)]
1317	set w [winfo width $itk_component(plot)]
1318	set h [winfo height $itk_component(plot)]
1319	foreach {x0 y0 pw ph} [$itk_component(plot) extents plotarea] break
1320	switch -glob -- $axis {
1321	x {
1322	set x [expr {round($x + $x0+0.5*$pw)}]
1323	set y [expr {round($y + $y0+$ph + 0.5*($h-$y0-$ph))}]
1324	set dir "above"
1325	}
1326	x* {
1327	set x [expr {round($x + $x0+0.5*$pw)}]
1328	set dir "below"
1329	set allx [$itk_component(plot) x2axis use]
1330	set max [llength $allx]
1331	set i [lsearch -exact $allx $axis]
1332	set y [expr {round($y + ($i+0.5)*$y0/double($max))}]
1333	}
1334	y {
1335	set x [expr {round($x + 0.5*$x0)}]
1336	set y [expr {round($y + $y0+0.5*$ph)}]
1337	set dir "right"
1338	}
1339	y* {
1340	set y [expr {round($y + $y0+0.5*$ph)}]
1341	set dir "left"
1342	set ally [$itk_component(plot) y2axis use]
1343	set max [llength $ally]
1344	set i [lsearch -exact $ally $axis]
1345	set y [expr {round($y + ($i+0.5)*$y0/double($max))}]
1346	set x [expr {round($x+$x0+$pw + ($i+0.5)*($w-$x0-$pw)/double($max))}]
1347	}
1348	}
1349	$itk_component(hull).axes activate @$x,$y $dir
1350	}
1351	changed {
1352	if {[llength $args] != 2} {
1353	error "wrong # args: should be \"_axis changed axis what\""
1354	}
1355	set axis [lindex $args 0]
1356	set what [lindex $args 1]
1357	if {$what == "focus"} {
1358	set what [focus]
1359	if {[winfo exists $what]} {
1360	set what [winfo name $what]
1361	}
1362	}
1363
1364	switch -- $what {
1365	label {
1366	set val [$inner.label get]
1367	$itk_component(plot) axis configure $axis -title $val
1368	}
1369	min {
1370	set val [$inner.min get]
1371	if {![string is double -strict $val]} {
1372	Rappture::Tooltip::cue $inner.min "Must be a number"
1373	bell
1374	return
1375	}
1376
1377	set max [lindex [$itk_component(plot) axis limits $axis] 1]
1378	if {$val >= $max} {
1379	Rappture::Tooltip::cue $inner.min "Must be <= max ($max)"
1380	bell
1381	return
1382	}
1383	catch {
1384	# can fail in log mode
1385	$itk_component(plot) axis configure $axis -min $val
1386	}
1387	foreach {min max} [$itk_component(plot) axis limits $axis] break
1388	$inner.min delete 0 end
1389	$inner.min insert end $min
1390	}
1391	max {
1392	set val [$inner.max get]
1393	if {![string is double -strict $val]} {
1394	Rappture::Tooltip::cue $inner.max "Should be a number"
1395	bell
1396	return
1397	}
1398
1399	set min [lindex [$itk_component(plot) axis limits $axis] 0]
1400	if {$val <= $min} {
1401	Rappture::Tooltip::cue $inner.max "Must be >= min ($min)"
1402	bell
1403	return
1404	}
1405	catch {
1406	# can fail in log mode
1407	$itk_component(plot) axis configure $axis -max $val
1408	}
1409	foreach {min max} [$itk_component(plot) axis limits $axis] break
1410	$inner.max delete 0 end
1411	$inner.max insert end $max
1412	}
1413	format {
1414	set fmt [$inner.format translate [$inner.format value]]
1415	set _axisPopup(format-$axis) $fmt
1416
1417	# force a refresh
1418	$itk_component(plot) axis configure $axis -min \
1419	[$itk_component(plot) axis cget $axis -min]
1420	}
1421	scale {
1422	_axis scale $axis $_axisPopup(scale)
1423
1424	if {$_axisPopup(scale) == "log"} {
1425	$inner.format configure -state disabled
1426	} else {
1427	$inner.format configure -state normal
1428	}
1429
1430	foreach {min max} [$itk_component(plot) axis limits $axis] break
1431	$inner.min delete 0 end
1432	$inner.min insert end $min
1433	$inner.max delete 0 end
1434	$inner.max insert end $max
1435	}
1436	default {
1437	# be lenient so we can handle the "focus" case
1438	}
1439	}
1440	}
1441	format {
1442	if {[llength $args] != 3} {
1443	error "wrong # args: should be \"_axis format axis widget value\""
1444	}
1445	set axis [lindex $args 0]
1446	set value [lindex $args 2]
1447
1448	if {[$itk_component(plot) axis cget $axis -logscale]} {
1449	set fmt "%.3g"
1450	} else {
1451	set fmt $_axisPopup(format-$axis)
1452	}
1453	return [format $fmt $value]
1454	}
1455	scale {
1456	if {[llength $args] != 2} {
1457	error "wrong # args: should be \"_axis scale axis type\""
1458	}
1459	set axis [lindex $args 0]
1460	set type [lindex $args 1]
1461
1462	if {$type == "log"} {
1463	catch {$itk_component(plot) axis configure $axis -logscale 1}
1464	# leave format alone in log mode
1465	$itk_component(plot) axis configure $axis -command ""
1466	} else {
1467	catch {$itk_component(plot) axis configure $axis -logscale 0}
1468	# use special formatting for linear mode
1469	$itk_component(plot) axis configure $axis -command \
1470	[itcl::code $this _axis format $axis]
1471	}
1472	}
1473	default {
1474	error "bad option \"$option\": should be changed, edit, hilite, or format"
1475	}
1476	}
1477	}
1478
1479
1480	# ----------------------------------------------------------------------
1481	# USAGE: _getLineMarkerOptions <style>
1482	#
1483	# Used internally to create a list of configuration options specific to the
1484	# axis line marker. The input is a list of name value pairs. Options that
1485	# are not recognized are ignored.
1486	# ----------------------------------------------------------------------
1487	itcl::body Rappture::BarResult::_getLineMarkerOptions {style} {
1488	array set lineOptions {
1489	"-color" "-color"
1490	"-dashes" "-dashes"
1491	"-linecolor" "-foreground"
1492	"-linewidth" "-borderwidth"
1493	}
1494	set options {}
1495	foreach {name value} $style {
1496	if { [info exists lineOptions($name)] } {
1497	lappend options $lineOptions($name) $value
1498	}
1499	}
1500	return $options
1501	}
1502
1503	# ----------------------------------------------------------------------
1504	# USAGE: _getTextMarkerOptions <style>
1505	#
1506	# Used internally to create a list of configuration options specific to the
1507	# axis text marker. The input is a list of name value pairs. Options that
1508	# are not recognized are ignored.
1509	# ----------------------------------------------------------------------
1510	itcl::body Rappture::BarResult::_getTextMarkerOptions {style} {
1511	array set textOptions {
1512	"-color" "-outline"
1513	"-textcolor" "-outline"
1514	"-font" "-font"
1515	"-xoffset" "-xoffset"
1516	"-yoffset" "-yoffset"
1517	"-anchor" "-anchor"
1518	}
1519	set options {}
1520	foreach {name value} $style {
1521	if { [info exists textOptions($name)] } {
1522	lappend options $textOptions($name) $value
1523	}
1524	}
1525	return $options
1526	}
1527
1528	# ----------------------------------------------------------------------
1529	# USAGE: _getAxes <curveObj>
1530	#
1531	# Used internally to figure out the axes used to plot the given
1532	# <curveObj>. Returns a list of the form {x y}, where x is the
1533	# x-axis name (x, x2, x3, etc.), and y is the y-axis name.
1534	# ----------------------------------------------------------------------
1535	itcl::body Rappture::BarResult::_getAxes {xydata} {
1536	# rebuild if needed, so we know about the axes
1537	if {[$_dispatcher ispending !rebuild]} {
1538	$_dispatcher cancel !rebuild
1539	$_dispatcher event -now !rebuild
1540	}
1541
1542	# what is the x axis? x? x2? x3? ...
1543	set xlabel [$xydata hints xlabel]
1544	if {[info exists _label2axis(x-$xlabel)]} {
1545	set mapx $_label2axis(x-$xlabel)
1546	} else {
1547	set mapx "x"
1548	}
1549
1550	# what is the y axis? y? y2? y3? ...
1551	set ylabel [$xydata hints ylabel]
1552	if {[info exists _label2axis(y-$ylabel)]} {
1553	set mapy $_label2axis(y-$ylabel)
1554	} else {
1555	set mapy "y"
1556	}
1557
1558	return [list $mapx $mapy]
1559	}
1560
1561	# ----------------------------------------------------------------------
1562	# CONFIGURATION OPTION: -gridcolor
1563	# ----------------------------------------------------------------------
1564	itcl::configbody Rappture::BarResult::gridcolor {
1565	if {"" == $itk_option(-gridcolor)} {
1566	$itk_component(plot) grid off
1567	} else {
1568	$itk_component(plot) grid configure -color $itk_option(-gridcolor)
1569	$itk_component(plot) grid on
1570	}
1571	}
1572
1573	# ----------------------------------------------------------------------
1574	# CONFIGURATION OPTION: -autocolors
1575	# ----------------------------------------------------------------------
1576	itcl::configbody Rappture::BarResult::autocolors {
1577	foreach c $itk_option(-autocolors) {
1578	if {[catch {winfo rgb $itk_component(hull) $c}]} {
1579	error "bad color \"$c\""
1580	}
1581	}
1582	if {$_autoColorI >= [llength $itk_option(-autocolors)]} {
1583	set _autoColorI 0
1584	}
1585	}
1586
1587	itcl::body Rappture::BarResult::_enterMarker { g name x y text } {
1588	_leaveMarker $g $name
1589	set id [$g marker create text \
1590	-coords [list $x $y] \
1591	-yoffset -1 \
1592	-anchor s \
1593	-text $text]
1594	set _markers($name) $id
1595	}
1596
1597	itcl::body Rappture::BarResult::_leaveMarker { g name } {
1598	if { [info exists _markers($name)] } {
1599	set id $_markers($name)
1600	$g marker delete $id
1601	unset _markers($name)
1602	}
1603	}
1604
1605	itcl::body Rappture::BarResult::_formatTickLabel { w value } {
1606	# Determine the element name from the value
1607
1608	set index [expr round($value)]
1609	if { $index != $value } {
1610	return $value
1611	}
1612	return [lindex $_tickLabels [expr $index - 1]]
1613	if { $label == "" } {
1614	return $value
1615	}
1616	return $label
1617	}

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