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source: trunk/gui/scripts/xyresult.tcl @ 1802

Last change on this file since 1802 was 1802, checked in by gah, 14 years ago

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1	# ----------------------------------------------------------------------
2	# COMPONENT: xyresult - X/Y plot in a ResultSet
3	#
4	# This widget is an X/Y plot, meant to view line graphs produced
5	# as output from the run of a Rappture tool. Use the "add" and
6	# "delete" methods to control the curves showing on the plot.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2005 Purdue Research Foundation
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16
17	option add *XyResult.width 3i widgetDefault
18	option add *XyResult.height 3i widgetDefault
19	option add *XyResult.gridColor #d9d9d9 widgetDefault
20	option add *XyResult.activeColor blue widgetDefault
21	option add *XyResult.dimColor gray widgetDefault
22	option add *XyResult.controlBackground gray widgetDefault
23	option add *XyResult.font \
24	--helvetica-medium-r-normal--12-* widgetDefault
25
26	set autocolors {
27	#0000ff #ff0000 #00cc00
28	#cc00cc #ff9900 #cccc00
29	#000080 #800000 #006600
30	#660066 #996600 #666600
31	}
32	set autocolors {
33	#0000cd
34	#cd0000
35	#00cd00
36	#3a5fcd
37	#cdcd00
38	#cd1076
39	#009acd
40	#00c5cd
41	#a2b5cd
42	#7ac5cd
43	#66cdaa
44	#a2cd5a
45	#cd9b9b
46	#cdba96
47	#cd3333
48	#cd6600
49	#cd8c95
50	#cd00cd
51	#9a32cd
52	#6ca6cd
53	#9ac0cd
54	#9bcd9b
55	#00cd66
56	#cdc673
57	#cdad00
58	#cd5555
59	#cd853f
60	#cd7054
61	#cd5b45
62	#cd6889
63	#cd69c9
64	#551a8b
65	}
66
67	option add *XyResult.autoColors $autocolors widgetDefault
68	option add XyResultBalloon*Entry.background white widgetDefault
69
70	itcl::class Rappture::XyResult {
71	inherit itk::Widget
72
73	itk_option define -gridcolor gridColor GridColor ""
74	itk_option define -activecolor activeColor ActiveColor ""
75	itk_option define -dimcolor dimColor DimColor ""
76	itk_option define -autocolors autoColors AutoColors ""
77
78	constructor {args} { # defined below }
79	destructor { # defined below }
80
81	public method add {curve {settings ""}}
82	public method get {}
83	public method delete {args}
84	public method scale {args}
85	public method parameters {title args} { # do nothing }
86	public method download {option args}
87
88	protected method _rebuild {}
89	protected method _resetLimits {}
90	protected method _zoom {option args}
91	protected method _hilite {state x y}
92	protected method _axis {option args}
93	protected method _getAxes {curve}
94	protected method _getLineMarkerOptions { style }
95	protected method _getTextMarkerOptions { style }
96	protected method _enterMarker { g name x y text }
97	protected method _leaveMarker { g name }
98
99	private variable _dispatcher "" ;# dispatcher for !events
100	private variable _clist "" ;# list of curve objects
101	private variable _curve2color ;# maps curve => plotting color
102	private variable _curve2width ;# maps curve => line width
103	private variable _curve2dashes ;# maps curve => BLT -dashes list
104	private variable _curve2raise ;# maps curve => raise flag 0/1
105	private variable _curve2desc ;# maps curve => description of data
106	private variable _elem2curve ;# maps graph element => curve
107	private variable _label2axis ;# maps axis label => axis ID
108	private variable _limits ;# axis limits: x-min, x-max, etc.
109	private variable _autoColorI 0 ;# index for next "-color auto"
110
111	private variable _hilite ;# info for element currently highlighted
112	private variable _axis ;# info for axis manipulations
113	private variable _axisPopup ;# info for axis being edited in popup
114	common _downloadPopup ;# download options from popup
115	private variable _markers
116	private variable cur_ ""
117	private variable initialized_ 0
118	}
119
120	itk::usual XyResult {
121	keep -background -foreground -cursor -font
122	}
123
124	itk::usual Panedwindow {
125	keep -background -cursor
126	}
127
128	# ----------------------------------------------------------------------
129	# CONSTRUCTOR
130	# ----------------------------------------------------------------------
131	itcl::body Rappture::XyResult::constructor {args} {
132	Rappture::dispatcher _dispatcher
133	$_dispatcher register !rebuild
134	$_dispatcher dispatch $this !rebuild "[itcl::code $this _rebuild]; list"
135
136	array set _downloadPopup {
137	format csv
138	}
139
140	option add hull.width hull.height
141	pack propagate $itk_component(hull) no
142
143	itk_component add main {
144	Rappture::SidebarFrame $itk_interior.main
145	}
146	pack $itk_component(main) -expand yes -fill both
147	set f [$itk_component(main) component controls]
148
149	itk_component add reset {
150	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
151	-highlightthickness 0 \
152	-image [Rappture::icon reset-view] \
153	-command [itcl::code $this _zoom reset]
154	} {
155	usual
156	ignore -borderwidth -highlightthickness
157	}
158	pack $itk_component(reset) -padx 4 -pady 2 -anchor e
159	Rappture::Tooltip::for $itk_component(reset) \
160	"Reset the view to the default zoom level"
161
162	set f [$itk_component(main) component frame]
163	itk_component add plot {
164	blt::graph $f.plot \
165	-highlightthickness 0 -plotpadx 0 -plotpady 4 \
166	-rightmargin 10
167	} {
168	keep -background -foreground -cursor -font
169	}
170	pack $itk_component(plot) -expand yes -fill both
171
172	$itk_component(plot) pen configure activeLine \
173	-symbol square -pixels 3 -linewidth 2 \
174	-outline black -fill red -color black
175
176	#
177	# Add bindings so you can mouse over points to see values:
178	#
179	bind $itk_component(plot) <Motion> \
180	[itcl::code $this _hilite at %x %y]
181	bind $itk_component(plot) <Leave> \
182	[itcl::code $this _hilite off %x %y]
183
184	#
185	# Add support for editing axes:
186	#
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::XyResult::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::XyResult::add {curve {settings ""}} {
279	array set params {
280	-color auto
281	-brightness 0
282	-width 1
283	-type "line"
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 type is set to "scatter", then override the width
297	if {"scatter" == $params(-type)} {
298	set params(-width) 0
299	}
300
301	# if the color is "auto", then select a color from -autocolors
302	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
303	if {$params(-color) == "autoreset"} {
304	set _autoColorI 0
305	}
306	set color [lindex $itk_option(-autocolors) $_autoColorI]
307	if {"" == $color} { set color black }
308	set params(-color) $color
309
310	# set up for next auto color
311	if {[incr _autoColorI] >= [llength $itk_option(-autocolors)]} {
312	set _autoColorI 0
313	}
314	}
315
316	# convert -linestyle to BLT -dashes
317	switch -- $params(-linestyle) {
318	dashed { set params(-linestyle) {4 4} }
319	dotted { set params(-linestyle) {2 4} }
320	default { set params(-linestyle) {} }
321	}
322
323	# if -brightness is set, then update the color
324	if {$params(-brightness) != 0} {
325	set params(-color) [Rappture::color::brightness \
326	$params(-color) $params(-brightness)]
327
328	set bg [$itk_component(plot) cget -plotbackground]
329	foreach {h s v} [Rappture::color::RGBtoHSV $bg] break
330	if {$v > 0.5} {
331	set params(-color) [Rappture::color::brightness_max \
332	$params(-color) 0.8]
333	} else {
334	set params(-color) [Rappture::color::brightness_min \
335	$params(-color) 0.2]
336	}
337	}
338
339	set pos [lsearch -exact $curve $_clist]
340	if {$pos < 0} {
341	lappend _clist $curve
342	set _curve2color($curve) $params(-color)
343	set _curve2width($curve) $params(-width)
344	set _curve2dashes($curve) $params(-linestyle)
345	set _curve2raise($curve) $params(-raise)
346	set _curve2desc($curve) $params(-description)
347
348	$_dispatcher event -idle !rebuild
349	}
350	}
351
352	# ----------------------------------------------------------------------
353	# USAGE: get
354	#
355	# Clients use this to query the list of objects being plotted, in
356	# order from bottom to top of this result.
357	# ----------------------------------------------------------------------
358	itcl::body Rappture::XyResult::get {} {
359	# put the dataobj list in order according to -raise options
360	set clist $_clist
361	foreach obj $clist {
362	if {[info exists _curve2raise($obj)] && $_curve2raise($obj)} {
363	set i [lsearch -exact $clist $obj]
364	if {$i >= 0} {
365	set clist [lreplace $clist $i $i]
366	lappend clist $obj
367	}
368	}
369	}
370	return $clist
371	}
372
373	# ----------------------------------------------------------------------
374	# USAGE: delete ?<curve1> <curve2> ...?
375	#
376	# Clients use this to delete a curve from the plot. If no curves
377	# are specified, then all curves are deleted.
378	# ----------------------------------------------------------------------
379	itcl::body Rappture::XyResult::delete {args} {
380	if {[llength $args] == 0} {
381	set args $_clist
382	}
383
384	# delete all specified curves
385	set changed 0
386	foreach curve $args {
387	set pos [lsearch -exact $_clist $curve]
388	if {$pos >= 0} {
389	set _clist [lreplace $_clist $pos $pos]
390	catch {unset _curve2color($curve)}
391	catch {unset _curve2width($curve)}
392	catch {unset _curve2dashes($curve)}
393	catch {unset _curve2raise($curve)}
394	foreach elem [array names _elem2curve] {
395	if {$_elem2curve($elem) == $curve} {
396	unset _elem2curve($elem)
397	}
398	}
399	set changed 1
400	}
401	}
402
403	# If anything changed, then rebuild the plot
404	if {$changed} {
405	$_dispatcher event -idle !rebuild
406	}
407
408	# Nothing left? then start over with auto colors
409	if {[llength $_clist] == 0} {
410	set _autoColorI 0
411	}
412	}
413
414	# ----------------------------------------------------------------------
415	# USAGE: scale ?<curve1> <curve2> ...?
416	#
417	# Sets the default limits for the overall plot according to the
418	# limits of the data for all of the given <curve> objects. This
419	# accounts for all curves--even those not showing on the screen.
420	# Because of this, the limits are appropriate for all curves as
421	# the user scans through data in the ResultSet viewer.
422	# ----------------------------------------------------------------------
423	itcl::body Rappture::XyResult::scale {args} {
424	set allx [$itk_component(plot) x2axis use]
425	lappend allx x ;# fix main x-axis too
426	foreach axis $allx {
427	_axis scale $axis linear
428	}
429
430	set ally [$itk_component(plot) y2axis use]
431	lappend ally y ;# fix main y-axis too
432	foreach axis $ally {
433	_axis scale $axis linear
434	}
435
436	catch {unset _limits}
437	foreach curve $args {
438	# find the axes for this curve (e.g., {x y2})
439	foreach {map(x) map(y)} [_getAxes $curve] break
440
441	foreach axis {x y} {
442	# get defaults for both linear and log scales
443	foreach type {lin log} {
444	# store results -- ex: _limits(x2log-min)
445	set id $map($axis)$type
446	foreach {min max} [$curve limits $axis$type] break
447	if {"" != $min && "" != $max} {
448	if {![info exists _limits($id-min)]} {
449	set _limits($id-min) $min
450	set _limits($id-max) $max
451	} else {
452	if {$min < $_limits($id-min)} {
453	set _limits($id-min) $min
454	}
455	if {$max > $_limits($id-max)} {
456	set _limits($id-max) $max
457	}
458	}
459	}
460	}
461
462	if {[$curve hints ${axis}scale] == "log"} {
463	_axis scale $map($axis) log
464	}
465	}
466	}
467	_resetLimits
468	}
469
470	# ----------------------------------------------------------------------
471	# USAGE: download coming
472	# USAGE: download controls <downloadCommand>
473	# USAGE: download now
474	#
475	# Clients use this method to create a downloadable representation
476	# of the plot. Returns a list of the form {ext string}, where
477	# "ext" is the file extension (indicating the type of data) and
478	# "string" is the data itself.
479	# ----------------------------------------------------------------------
480	itcl::body Rappture::XyResult::download {option args} {
481	switch $option {
482	coming {
483	# nothing to do
484	}
485	controls {
486	set popup .xyresultdownload
487	if {![winfo exists .xyresultdownload]} {
488	# if we haven't created the popup yet, do it now
489	Rappture::Balloon $popup \
490	-title "[Rappture::filexfer::label downloadWord] as..."
491	set inner [$popup component inner]
492	label $inner.summary -text "" -anchor w
493	pack $inner.summary -side top
494	radiobutton $inner.csv -text "Data as Comma-Separated Values" \
495	-variable Rappture::XyResult::_downloadPopup(format) \
496	-value csv
497	pack $inner.csv -anchor w
498	radiobutton $inner.image -text "Image (PS/PDF/PNG/JPEG)" \
499	-variable Rappture::XyResult::_downloadPopup(format) \
500	-value image
501	pack $inner.image -anchor w
502	button $inner.go -text [Rappture::filexfer::label download] \
503	-command [lindex $args 0]
504	pack $inner.go -pady 4
505	} else {
506	set inner [$popup component inner]
507	}
508	set num [llength [get]]
509	set num [expr {($num == 1) ? "1 result" : "$num results"}]
510	$inner.summary configure -text "[Rappture::filexfer::label downloadWord] $num in the following format:"
511	update idletasks ;# fix initial sizes
512	return $popup
513	}
514	now {
515	set popup .xyresultdownload
516	if {[winfo exists .xyresultdownload]} {
517	$popup deactivate
518	}
519	switch -- $_downloadPopup(format) {
520	csv {
521	# reverse the objects so the selected data appears on top
522	set dlist ""
523	foreach dataobj [get] {
524	set dlist [linsert $dlist 0 $dataobj]
525	}
526
527	# generate the comma-separated value data for these objects
528	set csvdata ""
529	foreach dataobj $dlist {
530	append csvdata "[string repeat - 60]\n"
531	append csvdata " [$dataobj hints label]\n"
532	if {[info exists _curve2desc($dataobj)]
533	&& [llength [split $_curve2desc($dataobj) \n]] > 1} {
534	set indent "for:"
535	foreach line [split $_curve2desc($dataobj) \n] {
536	append csvdata " $indent $line\n"
537	set indent " "
538	}
539	}
540	append csvdata "[string repeat - 60]\n"
541
542	append csvdata "[$dataobj hints xlabel], [$dataobj hints ylabel]\n"
543	set first 1
544	foreach comp [$dataobj components] {
545	if {!$first} {
546	# blank line between components
547	append csvdata "\n"
548	}
549	set xv [$dataobj mesh $comp]
550	set yv [$dataobj values $comp]
551	foreach x [$xv range 0 end] y [$yv range 0 end] {
552	append csvdata [format "%20.15g, %20.15g\n" $x $y]
553	}
554	set first 0
555	}
556	append csvdata "\n"
557	}
558	return [list .txt $csvdata]
559	}
560	image {
561	set popup .xyprintdownload
562	if { ![winfo exists $popup] } {
563	# Create a popup for the print dialog
564	Rappture::Balloon $popup -title "Save as image..."
565	set inner [$popup component inner]
566	# Create the print dialog widget and add it to the
567	# the balloon popup.
568	Rappture::XyPrint $inner.print
569	$popup configure \
570	-deactivatecommand [list $inner.print reset]
571	blt::table $inner 0,0 $inner.print -fill both
572	}
573	update
574	# Activate the popup and call for the output.
575	foreach { widget toolName plotName } $args break
576	$popup activate $widget left
577	set inner [$popup component inner]
578	set output [$inner.print print $itk_component(plot) \
579	$toolName $plotName]
580	$popup deactivate
581	return $output
582	}
583	}
584	}
585	default {
586	error "bad option \"$option\": should be coming, controls, now"
587	}
588	}
589	}
590
591	# ----------------------------------------------------------------------
592	# USAGE: _rebuild
593	#
594	# Called automatically whenever something changes that affects the
595	# data in the widget. Clears any existing data and rebuilds the
596	# widget to display new data.
597	# ----------------------------------------------------------------------
598	itcl::body Rappture::XyResult::_rebuild {} {
599	set g $itk_component(plot)
600
601	# first clear out the widget
602	eval $g element delete [$g element names]
603	eval $g marker delete [$g marker names]
604	foreach axis [$g axis names] {
605	$g axis configure $axis -hide yes -checklimits no
606	}
607	# Presumably you want at least an X-axis and Y-axis displayed.
608	$g xaxis configure -hide no
609	$g yaxis configure -hide no
610	catch {unset _label2axis}
611
612	#
613	# Scan through all objects and create a list of all axes.
614	# The first x-axis gets mapped to "x". The second, to "x2".
615	# Beyond that, we must create new axes "x3", "x4", etc.
616	# We do the same for y.
617	#
618	set anum(x) 0
619	set anum(y) 0
620	foreach curve [get] {
621	foreach ax {x y} {
622	set label [$curve hints ${ax}label]
623	if {"" != $label} {
624	if {![info exists _label2axis($ax-$label)]} {
625	switch [incr anum($ax)] {
626	1 { set axis $ax }
627	2 { set axis ${ax}2 }
628	default {
629	set axis $ax$anum($ax)
630	catch {$g axis create $axis}
631	}
632	}
633	$g axis configure $axis -title $label -hide no \
634	-checklimits no
635	set _label2axis($ax-$label) $axis
636
637	# if this axis has a description, add it as a tooltip
638	set desc [string trim [$curve hints ${ax}desc]]
639	Rappture::Tooltip::text $g-$axis $desc
640	}
641	}
642	}
643	}
644
645	#
646	# All of the extra axes get mapped to the x2/y2 (top/right)
647	# position.
648	#
649	set all ""
650	foreach ax {x y} {
651	lappend all $ax
652
653	set extra ""
654	for {set i 2} {$i <= $anum($ax)} {incr i} {
655	lappend extra ${ax}$i
656	}
657	eval lappend all $extra
658	$g ${ax}2axis use $extra
659	if {$ax == "y"} {
660	$g configure -rightmargin [expr {($extra == "") ? 10 : 0}]
661	}
662	}
663
664	foreach axis $all {
665	set _axisPopup(format-$axis) "%.3g"
666
667	$g axis bind $axis <Enter> \
668	[itcl::code $this _axis hilite $axis on]
669	$g axis bind $axis <Leave> \
670	[itcl::code $this _axis hilite $axis off]
671	$g axis bind $axis <ButtonPress> \
672	[itcl::code $this _axis click $axis %x %y]
673	$g axis bind $axis <B1-Motion> \
674	[itcl::code $this _axis drag $axis %x %y]
675	$g axis bind $axis <ButtonRelease> \
676	[itcl::code $this _axis release $axis %x %y]
677	$g axis bind $axis <KeyPress> \
678	[list ::Rappture::Tooltip::tooltip cancel]
679	}
680
681	#
682	# Plot all of the curves.
683	#
684	set count 0
685	foreach curve $_clist {
686	set label [$curve hints label]
687	foreach {mapx mapy} [_getAxes $curve] break
688
689	foreach comp [$curve components] {
690	set xv [$curve mesh $comp]
691	set yv [$curve values $comp]
692
693	if {[info exists _curve2color($curve)]} {
694	set color $_curve2color($curve)
695	} else {
696	set color [$curve hints color]
697	if {"" == $color} {
698	set color black
699	}
700	}
701
702	if {[info exists _curve2width($curve)]} {
703	set lwidth $_curve2width($curve)
704	} else {
705	set lwidth 2
706	}
707
708	if {[info exists _curve2dashes($curve)]} {
709	set dashes $_curve2dashes($curve)
710	} else {
711	set dashes ""
712	}
713
714	if {([$xv length] <= 1) \|\| ($lwidth == 0)} {
715	set sym square
716	set pixels 2
717	} else {
718	set sym ""
719	set pixels 6
720	}
721
722	set elem "elem[incr count]"
723	set _elem2curve($elem) $curve
724	lappend label2elem($label) $elem
725	$g element create $elem -x $xv -y $yv \
726	-symbol $sym -pixels $pixels -linewidth $lwidth \
727	-label $label \
728	-color $color -dashes $dashes \
729	-mapx $mapx -mapy $mapy
730	}
731	}
732
733	# Fix duplicate labels by appending the simulation number
734	foreach label [array names label2elem] {
735	if { [llength $label2elem($label)] == 1 } {
736	continue
737	}
738	foreach elem $label2elem($label) {
739	set curve $_elem2curve($elem)
740	scan [$curve hints xmlobj] "::libraryObj%d" suffix
741	incr suffix
742	set elabel [format "%s \#%d" $label $suffix]
743	$g element configure $elem -label $elabel
744	}
745	}
746
747	foreach curve $_clist {
748	set xmin -Inf
749	set ymin -Inf
750	set xmax Inf
751	set ymax Inf
752	#
753	# Create text/line markers for each *axis.marker specified.
754	#
755	foreach m [$curve 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 $options
772	}
773	}
774	}
775	foreach m [$curve 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::XyResult::_resetLimits {} {
806	set g $itk_component(plot)
807
808	#
809	# HACK ALERT!
810	# Use this code to fix up the y-axis limits for the BLT graph.
811	# The auto-limits don't always work well. We want them to be
812	# set to a "nice" number slightly above or below the min/max
813	# limits.
814	#
815	foreach axis [$g axis names] {
816	if {[info exists _limits(${axis}lin-min)]} {
817	set log [$g axis cget $axis -logscale]
818	if {$log} {
819	set min $_limits(${axis}log-min)
820	if {$min == 0} { set min 1 }
821	set max $_limits(${axis}log-max)
822	if {$max == 0} { set max 1 }
823
824	if {$min == $max} {
825	set logmin [expr {floor(log10(abs(0.9*$min)))}]
826	set logmax [expr {ceil(log10(abs(1.1*$max)))}]
827	} else {
828	set logmin [expr {floor(log10(abs($min)))}]
829	set logmax [expr {ceil(log10(abs($max)))}]
830	if 0 {
831	if {[string match y* $axis]} {
832	# add a little padding
833	set delta [expr {$logmax-$logmin}]
834	if {$delta == 0} { set delta 1 }
835	set logmin [expr {$logmin-0.05*$delta}]
836	set logmax [expr {$logmax+0.05*$delta}]
837	}
838	}
839	}
840	if {$logmin < -300} {
841	set min 1e-300
842	} elseif {$logmin > 300} {
843	set min 1e+300
844	} else {
845	set min [expr {pow(10.0,$logmin)}]
846	}
847
848	if {$logmax < -300} {
849	set max 1e-300
850	} elseif {$logmax > 300} {
851	set max 1e+300
852	} else {
853	set max [expr {pow(10.0,$logmax)}]
854	}
855	} else {
856	set min $_limits(${axis}lin-min)
857	set max $_limits(${axis}lin-max)
858
859	if 0 {
860	if {[string match y* $axis]} {
861	# add a little padding
862	set delta [expr {$max-$min}]
863	set min [expr {$min-0.05*$delta}]
864	set max [expr {$max+0.05*$delta}]
865	}
866	}
867	}
868	if {$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::XyResult::_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::XyResult::_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	$g element activate $elem
997	set _hilite(elem) $elem
998
999	set mapx [$g element cget $elem -mapx]
1000	set mapy [$g element cget $elem -mapy]
1001	if {[info exists _elem2curve($elem)]} {
1002	foreach {mapx mapy} [_getAxes $_elem2curve($elem)] break
1003	}
1004	set allx [$g x2axis use]
1005	if {[llength $allx] > 0} {
1006	lappend allx x ;# fix main x-axis too
1007	foreach axis $allx {
1008	if {$axis == $mapx} {
1009	$g axis configure $axis -color $itk_option(-foreground) \
1010	-titlecolor $itk_option(-foreground)
1011	} else {
1012	$g axis configure $axis -color $itk_option(-dimcolor) \
1013	-titlecolor $itk_option(-dimcolor)
1014	}
1015	}
1016	}
1017	set ally [$g y2axis use]
1018	if {[llength $ally] > 0} {
1019	lappend ally y ;# fix main y-axis too
1020	foreach axis $ally {
1021	if {$axis == $mapy} {
1022	$g axis configure $axis -color $itk_option(-foreground) \
1023	-titlecolor $itk_option(-foreground)
1024	} else {
1025	$g axis configure $axis -color $itk_option(-dimcolor) \
1026	-titlecolor $itk_option(-dimcolor)
1027	}
1028	}
1029	}
1030
1031	if {"" != $tip} {
1032	$g crosshairs configure -hide no -position @$x,$y
1033
1034	if {$x > 0.5*[winfo width $g]} {
1035	if {$x < 4} {
1036	set tipx "-0"
1037	} else {
1038	set tipx "-[expr {$x-4}]" ;# move tooltip to the left
1039	}
1040	} else {
1041	if {$x < -4} {
1042	set tipx "+0"
1043	} else {
1044	set tipx "+[expr {$x+4}]" ;# move tooltip to the right
1045	}
1046	}
1047	if {$y > 0.5*[winfo height $g]} {
1048	if {$y < 4} {
1049	set tipy "-0"
1050	} else {
1051	set tipy "-[expr {$y-4}]" ;# move tooltip to the top
1052	}
1053	} else {
1054	if {$y < -4} {
1055	set tipy "+0"
1056	} else {
1057	set tipy "+[expr {$y+4}]" ;# move tooltip to the bottom
1058	}
1059	}
1060	Rappture::Tooltip::text $g $tip
1061	Rappture::Tooltip::tooltip show $g $tipx,$tipy
1062	}
1063	} else {
1064	#
1065	# Highlight OFF:
1066	# - deactivate (color back to normal)
1067	# - put all axes back to normal color
1068	# - take down tooltip
1069	#
1070	if { [$g element exists $_hilite(elem)] } {
1071	$g element deactivate $_hilite(elem)
1072	}
1073	set allx [$g x2axis use]
1074	if {[llength $allx] > 0} {
1075	lappend allx x ;# fix main x-axis too
1076	foreach axis $allx {
1077	$g axis configure $axis -color $itk_option(-foreground) \
1078	-titlecolor $itk_option(-foreground)
1079	}
1080	}
1081
1082	set ally [$g y2axis use]
1083	if {[llength $ally] > 0} {
1084	lappend ally y ;# fix main y-axis too
1085	foreach axis $ally {
1086	$g axis configure $axis -color $itk_option(-foreground) \
1087	-titlecolor $itk_option(-foreground)
1088	}
1089	}
1090
1091	$g crosshairs configure -hide yes
1092
1093	# only cancel in plotting area or we'll mess up axes
1094	if {[$g inside $x $y]} {
1095	Rappture::Tooltip::tooltip cancel
1096	}
1097
1098	# There is no currently highlighted element
1099	set _hilite(elem) ""
1100	}
1101	}
1102
1103	# ----------------------------------------------------------------------
1104	# USAGE: _axis hilite <axis> <state>
1105	#
1106	# USAGE: _axis click <axis> <x> <y>
1107	# USAGE: _axis drag <axis> <x> <y>
1108	# USAGE: _axis release <axis> <x> <y>
1109	#
1110	# USAGE: _axis edit <axis>
1111	# USAGE: _axis changed <axis> <what>
1112	# USAGE: _axis format <axis> <widget> <value>
1113	# USAGE: _axis scale <axis> linear\|log
1114	#
1115	# Used internally to handle editing of the x/y axes. The hilite
1116	# operation causes the axis to light up. The edit operation pops
1117	# up a panel with editing options. The changed operation applies
1118	# changes from the panel.
1119	# ----------------------------------------------------------------------
1120	itcl::body Rappture::XyResult::_axis {option args} {
1121	set inner [$itk_component(hull).axes component inner]
1122
1123	switch -- $option {
1124	hilite {
1125	if {[llength $args] != 2} {
1126	error "wrong # args: should be \"_axis hilite axis state\""
1127	}
1128	set g $itk_component(plot)
1129	set axis [lindex $args 0]
1130	set state [lindex $args 1]
1131
1132	if {$state} {
1133	$g axis configure $axis \
1134	-color $itk_option(-activecolor) \
1135	-titlecolor $itk_option(-activecolor)
1136
1137	set x [expr {[winfo pointerx $g]+4}]
1138	set y [expr {[winfo pointery $g]+4}]
1139	Rappture::Tooltip::tooltip pending $g-$axis @$x,$y
1140	} else {
1141	$g axis configure $axis \
1142	-color $itk_option(-foreground) \
1143	-titlecolor $itk_option(-foreground)
1144	Rappture::Tooltip::tooltip cancel
1145	}
1146	}
1147	click {
1148	if {[llength $args] != 3} {
1149	error "wrong # args: should be \"_axis click axis x y\""
1150	}
1151	set axis [lindex $args 0]
1152	set x [lindex $args 1]
1153	set y [lindex $args 2]
1154	set g $itk_component(plot)
1155
1156	set _axis(moved) 0
1157	set _axis(click-x) $x
1158	set _axis(click-y) $y
1159	foreach {min max} [$g axis limits $axis] break
1160	set _axis(min0) $min
1161	set _axis(max0) $max
1162	Rappture::Tooltip::tooltip cancel
1163	}
1164	drag {
1165	if {[llength $args] != 3} {
1166	error "wrong # args: should be \"_axis drag axis x y\""
1167	}
1168	if {![info exists _axis(moved)]} {
1169	return ;# must have skipped click event -- ignore
1170	}
1171	set axis [lindex $args 0]
1172	set x [lindex $args 1]
1173	set y [lindex $args 2]
1174	set g $itk_component(plot)
1175
1176	if {[info exists _axis(click-x)] && [info exists _axis(click-y)]} {
1177	foreach {x0 y0 pw ph} [$g extents plotarea] break
1178	switch -glob $axis {
1179	x* {
1180	set pix $x
1181	set pix0 $_axis(click-x)
1182	set pixmin $x0
1183	set pixmax [expr {$x0+$pw}]
1184	}
1185	y* {
1186	set pix $y
1187	set pix0 $_axis(click-y)
1188	set pixmin [expr {$y0+$ph}]
1189	set pixmax $y0
1190	}
1191	}
1192	set log [$g axis cget $axis -logscale]
1193	set min $_axis(min0)
1194	set max $_axis(max0)
1195	set dpix [expr {abs($pix-$pix0)}]
1196	set v0 [$g axis invtransform $axis $pixmin]
1197	set v1 [$g axis invtransform $axis [expr {$pixmin+$dpix}]]
1198	if {$log} {
1199	set v0 [expr {log10($v0)}]
1200	set v1 [expr {log10($v1)}]
1201	set min [expr {log10($min)}]
1202	set max [expr {log10($max)}]
1203	}
1204
1205	if {$pix > $pix0} {
1206	set delta [expr {$v1-$v0}]
1207	} else {
1208	set delta [expr {$v0-$v1}]
1209	}
1210	set min [expr {$min-$delta}]
1211	set max [expr {$max-$delta}]
1212	if {$log} {
1213	set min [expr {pow(10.0,$min)}]
1214	set max [expr {pow(10.0,$max)}]
1215	}
1216	$g axis configure $axis -min $min -max $max
1217
1218	# move axis, don't edit on release
1219	set _axis(move) 1
1220	}
1221	}
1222	release {
1223	if {[llength $args] != 3} {
1224	error "wrong # args: should be \"_axis release axis x y\""
1225	}
1226	if {![info exists _axis(moved)]} {
1227	return ;# must have skipped click event -- ignore
1228	}
1229	set axis [lindex $args 0]
1230	set x [lindex $args 1]
1231	set y [lindex $args 2]
1232
1233	if {!$_axis(moved)} {
1234	# small movement? then treat as click -- pop up axis editor
1235	set dx [expr {abs($x-$_axis(click-x))}]
1236	set dy [expr {abs($y-$_axis(click-y))}]
1237	if {$dx < 2 && $dy < 2} {
1238	_axis edit $axis
1239	}
1240	} else {
1241	# one last movement
1242	_axis drag $axis $x $y
1243	}
1244	catch {unset _axis}
1245	}
1246	edit {
1247	if {[llength $args] != 1} {
1248	error "wrong # args: should be \"_axis edit axis\""
1249	}
1250	set axis [lindex $args 0]
1251	set _axisPopup(current) $axis
1252
1253	# apply last value when deactivating
1254	$itk_component(hull).axes configure -deactivatecommand \
1255	[itcl::code $this _axis changed $axis focus]
1256
1257	# fix axis label controls...
1258	set label [$itk_component(plot) axis cget $axis -title]
1259	$inner.label delete 0 end
1260	$inner.label insert end $label
1261	bind $inner.label <KeyPress-Return> \
1262	[itcl::code $this _axis changed $axis label]
1263	bind $inner.label <FocusOut> \
1264	[itcl::code $this _axis changed $axis label]
1265
1266	# fix min/max controls...
1267	foreach {min max} [$itk_component(plot) axis limits $axis] break
1268	$inner.min delete 0 end
1269	$inner.min insert end $min
1270	bind $inner.min <KeyPress-Return> \
1271	[itcl::code $this _axis changed $axis min]
1272	bind $inner.min <FocusOut> \
1273	[itcl::code $this _axis changed $axis min]
1274
1275	$inner.max delete 0 end
1276	$inner.max insert end $max
1277	bind $inner.max <KeyPress-Return> \
1278	[itcl::code $this _axis changed $axis max]
1279	bind $inner.max <FocusOut> \
1280	[itcl::code $this _axis changed $axis max]
1281
1282	# fix format control...
1283	set fmts [$inner.format choices get -value]
1284	set i [lsearch -exact $fmts $_axisPopup(format-$axis)]
1285	if {$i < 0} { set i 0 } ;# use Auto choice
1286	$inner.format value [$inner.format choices get -label $i]
1287
1288	bind $inner.format <<Value>> \
1289	[itcl::code $this _axis changed $axis format]
1290
1291	# fix scale control...
1292	if {[$itk_component(plot) axis cget $axis -logscale]} {
1293	set _axisPopup(scale) "log"
1294	$inner.format configure -state disabled
1295	} else {
1296	set _axisPopup(scale) "linear"
1297	$inner.format configure -state normal
1298	}
1299	$inner.scales.linear configure \
1300	-command [itcl::code $this _axis changed $axis scale]
1301	$inner.scales.log configure \
1302	-command [itcl::code $this _axis changed $axis scale]
1303
1304	#
1305	# Figure out where the window should pop up.
1306	#
1307	set x [winfo rootx $itk_component(plot)]
1308	set y [winfo rooty $itk_component(plot)]
1309	set w [winfo width $itk_component(plot)]
1310	set h [winfo height $itk_component(plot)]
1311	foreach {x0 y0 pw ph} [$itk_component(plot) extents plotarea] break
1312	switch -glob -- $axis {
1313	x {
1314	set x [expr {round($x + $x0+0.5*$pw)}]
1315	set y [expr {round($y + $y0+$ph + 0.5*($h-$y0-$ph))}]
1316	set dir "above"
1317	}
1318	x* {
1319	set x [expr {round($x + $x0+0.5*$pw)}]
1320	set dir "below"
1321	set allx [$itk_component(plot) x2axis use]
1322	set max [llength $allx]
1323	set i [lsearch -exact $allx $axis]
1324	set y [expr {round($y + ($i+0.5)*$y0/double($max))}]
1325	}
1326	y {
1327	set x [expr {round($x + 0.5*$x0)}]
1328	set y [expr {round($y + $y0+0.5*$ph)}]
1329	set dir "right"
1330	}
1331	y* {
1332	set y [expr {round($y + $y0+0.5*$ph)}]
1333	set dir "left"
1334	set ally [$itk_component(plot) y2axis use]
1335	set max [llength $ally]
1336	set i [lsearch -exact $ally $axis]
1337	set y [expr {round($y + ($i+0.5)*$y0/double($max))}]
1338	set x [expr {round($x+$x0+$pw + ($i+0.5)*($w-$x0-$pw)/double($max))}]
1339	}
1340	}
1341	$itk_component(hull).axes activate @$x,$y $dir
1342	}
1343	changed {
1344	if {[llength $args] != 2} {
1345	error "wrong # args: should be \"_axis changed axis what\""
1346	}
1347	set axis [lindex $args 0]
1348	set what [lindex $args 1]
1349	if {$what == "focus"} {
1350	set what [focus]
1351	if {[winfo exists $what]} {
1352	set what [winfo name $what]
1353	}
1354	}
1355
1356	switch -- $what {
1357	label {
1358	set val [$inner.label get]
1359	$itk_component(plot) axis configure $axis -title $val
1360	}
1361	min {
1362	set val [$inner.min get]
1363	if {![string is double -strict $val]} {
1364	Rappture::Tooltip::cue $inner.min "Must be a number"
1365	bell
1366	return
1367	}
1368
1369	set max [lindex [$itk_component(plot) axis limits $axis] 1]
1370	if {$val >= $max} {
1371	Rappture::Tooltip::cue $inner.min "Must be <= max ($max)"
1372	bell
1373	return
1374	}
1375	catch {
1376	# can fail in log mode
1377	$itk_component(plot) axis configure $axis -min $val
1378	}
1379	foreach {min max} [$itk_component(plot) axis limits $axis] break
1380	$inner.min delete 0 end
1381	$inner.min insert end $min
1382	}
1383	max {
1384	set val [$inner.max get]
1385	if {![string is double -strict $val]} {
1386	Rappture::Tooltip::cue $inner.max "Should be a number"
1387	bell
1388	return
1389	}
1390
1391	set min [lindex [$itk_component(plot) axis limits $axis] 0]
1392	if {$val <= $min} {
1393	Rappture::Tooltip::cue $inner.max "Must be >= min ($min)"
1394	bell
1395	return
1396	}
1397	catch {
1398	# can fail in log mode
1399	$itk_component(plot) axis configure $axis -max $val
1400	}
1401	foreach {min max} [$itk_component(plot) axis limits $axis] break
1402	$inner.max delete 0 end
1403	$inner.max insert end $max
1404	}
1405	format {
1406	set fmt [$inner.format translate [$inner.format value]]
1407	set _axisPopup(format-$axis) $fmt
1408
1409	# force a refresh
1410	$itk_component(plot) axis configure $axis -min \
1411	[$itk_component(plot) axis cget $axis -min]
1412	}
1413	scale {
1414	_axis scale $axis $_axisPopup(scale)
1415
1416	if {$_axisPopup(scale) == "log"} {
1417	$inner.format configure -state disabled
1418	} else {
1419	$inner.format configure -state normal
1420	}
1421
1422	foreach {min max} [$itk_component(plot) axis limits $axis] break
1423	$inner.min delete 0 end
1424	$inner.min insert end $min
1425	$inner.max delete 0 end
1426	$inner.max insert end $max
1427	}
1428	default {
1429	# be lenient so we can handle the "focus" case
1430	}
1431	}
1432	}
1433	format {
1434	if {[llength $args] != 3} {
1435	error "wrong # args: should be \"_axis format axis widget value\""
1436	}
1437	set axis [lindex $args 0]
1438	set value [lindex $args 2]
1439
1440	if {[$itk_component(plot) axis cget $axis -logscale]} {
1441	set fmt "%.3g"
1442	} else {
1443	set fmt $_axisPopup(format-$axis)
1444	}
1445	return [format $fmt $value]
1446	}
1447	scale {
1448	if {[llength $args] != 2} {
1449	error "wrong # args: should be \"_axis scale axis type\""
1450	}
1451	set axis [lindex $args 0]
1452	set type [lindex $args 1]
1453
1454	if {$type == "log"} {
1455	catch {$itk_component(plot) axis configure $axis -logscale 1}
1456	# leave format alone in log mode
1457	$itk_component(plot) axis configure $axis -command ""
1458	} else {
1459	catch {$itk_component(plot) axis configure $axis -logscale 0}
1460	# use special formatting for linear mode
1461	$itk_component(plot) axis configure $axis -command \
1462	[itcl::code $this _axis format $axis]
1463	}
1464	}
1465	default {
1466	error "bad option \"$option\": should be changed, edit, hilite, or format"
1467	}
1468	}
1469	}
1470
1471
1472	# ----------------------------------------------------------------------
1473	# USAGE: _getLineMarkerOptions <style>
1474	#
1475	# Used internally to create a list of configuration options specific to the
1476	# axis line marker. The input is a list of name value pairs. Options that
1477	# are not recognized are ignored.
1478	# ----------------------------------------------------------------------
1479	itcl::body Rappture::XyResult::_getLineMarkerOptions {style} {
1480	array set lineOptions {
1481	"-color" "-outline"
1482	"-dashes" "-dashes"
1483	"-linecolor" "-outline"
1484	"-linewidth" "-linewidth"
1485	}
1486	set options {}
1487	foreach {name value} $style {
1488	if { [info exists lineOptions($name)] } {
1489	lappend options $lineOptions($name) $value
1490	}
1491	}
1492	return $options
1493	}
1494
1495	# ----------------------------------------------------------------------
1496	# USAGE: _getTextMarkerOptions <style>
1497	#
1498	# Used internally to create a list of configuration options specific to the
1499	# axis text marker. The input is a list of name value pairs. Options that
1500	# are not recognized are ignored.
1501	# ----------------------------------------------------------------------
1502	itcl::body Rappture::XyResult::_getTextMarkerOptions {style} {
1503	array set textOptions {
1504	"-color" "-outline"
1505	"-textcolor" "-outline"
1506	"-font" "-font"
1507	"-xoffset" "-xoffset"
1508	"-yoffset" "-yoffset"
1509	"-anchor" "-anchor"
1510	"-rotate" "-rotate"
1511	}
1512	set options {}
1513	foreach {name value} $style {
1514	if { [info exists textOptions($name)] } {
1515	lappend options $textOptions($name) $value
1516	}
1517	}
1518	return $options
1519	}
1520
1521	# ----------------------------------------------------------------------
1522	# USAGE: _getAxes <curveObj>
1523	#
1524	# Used internally to figure out the axes used to plot the given
1525	# <curveObj>. Returns a list of the form {x y}, where x is the
1526	# x-axis name (x, x2, x3, etc.), and y is the y-axis name.
1527	# ----------------------------------------------------------------------
1528	itcl::body Rappture::XyResult::_getAxes {curve} {
1529	# rebuild if needed, so we know about the axes
1530	if {[$_dispatcher ispending !rebuild]} {
1531	$_dispatcher cancel !rebuild
1532	$_dispatcher event -now !rebuild
1533	}
1534
1535	# what is the x axis? x? x2? x3? ...
1536	set xlabel [$curve hints xlabel]
1537	if {[info exists _label2axis(x-$xlabel)]} {
1538	set mapx $_label2axis(x-$xlabel)
1539	} else {
1540	set mapx "x"
1541	}
1542
1543	# what is the y axis? y? y2? y3? ...
1544	set ylabel [$curve hints ylabel]
1545	if {[info exists _label2axis(y-$ylabel)]} {
1546	set mapy $_label2axis(y-$ylabel)
1547	} else {
1548	set mapy "y"
1549	}
1550
1551	return [list $mapx $mapy]
1552	}
1553
1554	# ----------------------------------------------------------------------
1555	# CONFIGURATION OPTION: -gridcolor
1556	# ----------------------------------------------------------------------
1557	itcl::configbody Rappture::XyResult::gridcolor {
1558	if {"" == $itk_option(-gridcolor)} {
1559	$itk_component(plot) grid off
1560	} else {
1561	$itk_component(plot) grid configure -color $itk_option(-gridcolor)
1562	$itk_component(plot) grid on
1563	}
1564	}
1565
1566	# ----------------------------------------------------------------------
1567	# CONFIGURATION OPTION: -autocolors
1568	# ----------------------------------------------------------------------
1569	itcl::configbody Rappture::XyResult::autocolors {
1570	foreach c $itk_option(-autocolors) {
1571	if {[catch {winfo rgb $itk_component(hull) $c}]} {
1572	error "bad color \"$c\""
1573	}
1574	}
1575	if {$_autoColorI >= [llength $itk_option(-autocolors)]} {
1576	set _autoColorI 0
1577	}
1578	}
1579
1580	itcl::body Rappture::XyResult::_enterMarker { g name x y text } {
1581	_leaveMarker $g $name
1582	set id [$g marker create text \
1583	-coords [list $x $y] \
1584	-yoffset -1 \
1585	-anchor s \
1586	-text $text]
1587	set _markers($name) $id
1588	}
1589
1590	itcl::body Rappture::XyResult::_leaveMarker { g name } {
1591	if { [info exists _markers($name)] } {
1592	set id $_markers($name)
1593	$g marker delete $id
1594	unset _markers($name)
1595	}
1596	}

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