Context Navigation

source: branches/1.4/gui/scripts/vtkimageviewer.tcl @ 5187

Last change on this file since 5187 was 5187, checked in by ldelgass, 8 years ago
s/styles/style/ (for code consistency), remove unused member variables
File size: 78.5 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkimageviewer - Vtk image viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
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	#package require Img
17
18	option add *VtkImageViewer.width 4i widgetDefault
19	option add VtkImageViewercursor crosshair widgetDefault
20	option add *VtkImageViewer.height 4i widgetDefault
21	option add *VtkImageViewer.foreground black widgetDefault
22	option add *VtkImageViewer.controlBackground gray widgetDefault
23	option add *VtkImageViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkImageViewer.plotBackground black widgetDefault
25	option add *VtkImageViewer.plotForeground white widgetDefault
26	option add *VtkImageViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkImageViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkImageViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkImageViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "vtkimage"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name }
70	private method BuildImageTab {}
71	private method BuildDownloadPopup { widget command }
72	private method Combo { option }
73	private method Connect {}
74	private method CurrentDatasets {args}
75	private method Disconnect {}
76	private method DoResize {}
77	private method DoRotate {}
78	private method DrawLegend {}
79	private method EnterLegend { x y }
80	private method EventuallyRequestLegend {}
81	private method EventuallyResize { w h }
82	private method EventuallyRotate { q }
83	private method GetImage { args }
84	private method GetVtkData { args }
85	private method InitSettings { args }
86	private method IsValidObject { dataobj }
87	private method LeaveLegend {}
88	private method MotionLegend { x y }
89	private method Pan {option x y}
90	private method PanCamera {}
91	private method Pick {x y}
92	private method QuaternionToView { q } {
93	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
94	}
95	private method Rebuild {}
96	private method ReceiveDataset { args }
97	private method ReceiveImage { args }
98	private method ReceiveLegend { colormap title min max size }
99	private method RequestLegend {}
100	private method Rotate {option x y}
101	private method SetCurrentColormap { color }
102	private method SetLegendTip { x y }
103	private method SetObjectStyle { dataobj comp }
104	private method SetOrientation { side }
105	private method ViewToQuaternion {} {
106	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
107	}
108	private method Zoom {option}
109
110	private variable _arcball ""
111	private variable _dlist "" ; # list of data objects
112	private variable _obj2datasets
113	private variable _obj2ovride ; # maps dataobj => style override
114	private variable _datasets ; # contains all the dataobj-component
115	; # datasets in the server
116	private variable _colormaps ; # contains all the colormaps
117	; # in the server.
118
119	# The name of the current colormap used. The colormap is global to all
120	# images displayed.
121	private variable _currentColormap ""
122	private variable _currentNumIsolines -1
123
124	private variable _maxScale 100; # This is the # of times the x-axis
125	# and y-axis ranges can differ before
126	# automatically turning on
127	# -stretchtofit
128
129	private variable _click ; # info used for rotate operations
130	private variable _limits ; # Holds overall limits for all dataobjs
131	# using the viewer.
132	private variable _view ; # view params for 3D view
133	private variable _settings
134	private variable _changed
135	private variable _reset 1; # Connection to server has been reset.
136
137	private variable _first "" ; # This is the topmost dataset.
138	private variable _start 0
139	private variable _isolines
140	private variable _contourList ""
141
142	common _downloadPopup; # download options from popup
143	private common _hardcopy
144	private variable _width 0
145	private variable _height 0
146	private variable _legendWidth 0
147	private variable _legendHeight 0
148	private variable _resizePending 0
149	private variable _rotatePending 0
150	private variable _legendPending 0
151	private variable _fieldNames {}
152	private variable _fields
153	private variable _curFldName ""
154	private variable _curFldLabel ""
155	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
156	}
157
158	itk::usual VtkImageViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground -mode
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::VtkImageViewer::constructor {hostlist args} {
167	set _serverType "vtkvis"
168
169	# Rebuild event
170	$_dispatcher register !rebuild
171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
172
173	# Resize event
174	$_dispatcher register !resize
175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
176
177	# Rotate event
178	$_dispatcher register !rotate
179	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
180
181	# Legend event
182	$_dispatcher register !legend
183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
184
185	#
186	# Populate parser with commands handle incoming requests
187	#
188	$_parser alias image [itcl::code $this ReceiveImage]
189	$_parser alias dataset [itcl::code $this ReceiveDataset]
190	$_parser alias legend [itcl::code $this ReceiveLegend]
191
192	# Create image for legend colorbar.
193	set _image(legend) [image create photo]
194
195	# Initialize the view to some default parameters.
196	array set _view {
197	-ortho 0
198	-qw 0.36
199	-qx 0.25
200	-qy 0.50
201	-qz 0.70
202	-xpan 0
203	-ypan 0
204	-zoom 1.0
205	}
206	set _arcball [blt::arcball create 100 100]
207	$_arcball quaternion [ViewToQuaternion]
208
209	array set _settings {
210	-axisflymode "static"
211	-axislabels 1
212	-axisminorticks 1
213	-axisvisible 1
214	-backingcolor white
215	-backingvisible 1
216	-colormapdiscrete 0
217	-field "Default"
218	-legendvisible 0
219	-level 127.5
220	-numcolors 256
221	-opacity 100
222	-outline 0
223	-saveopacity 100
224	-stretchtofit 0
225	-view3d 0
226	-window 255.0
227	-xgrid 0
228	-ygrid 0
229	-zgrid 0
230	}
231	array set _changed {
232	-colormap 0
233	-opacity 0
234	}
235	itk_component add view {
236	canvas $itk_component(plotarea).view \
237	-highlightthickness 0 -borderwidth 0
238	} {
239	usual
240	ignore -highlightthickness -borderwidth -background
241	}
242
243	itk_component add fieldmenu {
244	menu $itk_component(plotarea).menu \
245	-relief flat \
246	-tearoff no
247	} {
248	usual
249	ignore -background -foreground -relief -tearoff
250	}
251	set c $itk_component(view)
252	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
253	bind $c <4> [itcl::code $this Zoom in 0.25]
254	bind $c <5> [itcl::code $this Zoom out 0.25]
255	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
256	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
257	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
258	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
259	bind $c <Enter> "focus %W"
260	bind $c <Control-F1> [itcl::code $this ToggleConsole]
261
262	# Fix the scrollregion in case we go off screen
263	$c configure -scrollregion [$c bbox all]
264
265	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
266	set _map(cwidth) -1
267	set _map(cheight) -1
268	set _map(zoom) 1.0
269	set _map(original) ""
270
271	set f [$itk_component(main) component controls]
272	itk_component add reset {
273	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
274	-highlightthickness 0 \
275	-image [Rappture::icon reset-view] \
276	-command [itcl::code $this Zoom reset]
277	} {
278	usual
279	ignore -highlightthickness
280	}
281	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
282	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
283
284	itk_component add zoomin {
285	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
286	-highlightthickness 0 \
287	-image [Rappture::icon zoom-in] \
288	-command [itcl::code $this Zoom in]
289	} {
290	usual
291	ignore -highlightthickness
292	}
293	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
294	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
295
296	itk_component add zoomout {
297	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
298	-highlightthickness 0 \
299	-image [Rappture::icon zoom-out] \
300	-command [itcl::code $this Zoom out]
301	} {
302	usual
303	ignore -highlightthickness
304	}
305	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
306	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
307
308	itk_component add mode {
309	Rappture::PushButton $f.mode \
310	-onimage [Rappture::icon surface] \
311	-offimage [Rappture::icon surface] \
312	-variable [itcl::scope _settings(-view3d)] \
313	-command [itcl::code $this AdjustSetting -view3d] \
314	}
315	Rappture::Tooltip::for $itk_component(mode) \
316	"Toggle the surface/contour on/off"
317	pack $itk_component(mode) -padx 2 -pady { 2 0 }
318
319	itk_component add stretchtofit {
320	Rappture::PushButton $f.stretchtofit \
321	-onimage [Rappture::icon stretchtofit] \
322	-offimage [Rappture::icon stretchtofit] \
323	-variable [itcl::scope _settings(-stretchtofit)] \
324	-command [itcl::code $this AdjustSetting -stretchtofit] \
325	}
326	Rappture::Tooltip::for $itk_component(stretchtofit) \
327	"Stretch plot to fit window on/off"
328	pack $itk_component(stretchtofit) -padx 2 -pady 2
329
330	if { [catch {
331	BuildImageTab
332	BuildAxisTab
333	BuildCameraTab
334	} errs] != 0 } {
335	global errorInfo
336	puts stderr "errs=$errs errorInfo=$errorInfo"
337	}
338
339	# Hack around the Tk panewindow. The problem is that the requested
340	# size of the 3d view isn't set until an image is retrieved from
341	# the server. So the panewindow uses the tiny size.
342	set w 10000
343	pack forget $itk_component(view)
344	blt::table $itk_component(plotarea) \
345	0,0 $itk_component(view) -fill both -reqwidth $w
346	blt::table configure $itk_component(plotarea) c1 -resize none
347
348	# Bindings for panning via mouse
349	bind $itk_component(view) <ButtonPress-2> \
350	[itcl::code $this Pan click %x %y]
351	bind $itk_component(view) <B2-Motion> \
352	[itcl::code $this Pan drag %x %y]
353	bind $itk_component(view) <ButtonRelease-2> \
354	[itcl::code $this Pan release %x %y]
355
356	#bind $itk_component(view) <ButtonRelease-3> \
357	# [itcl::code $this Pick %x %y]
358
359	# Bindings for panning via keyboard
360	bind $itk_component(view) <KeyPress-Left> \
361	[itcl::code $this Pan set -10 0]
362	bind $itk_component(view) <KeyPress-Right> \
363	[itcl::code $this Pan set 10 0]
364	bind $itk_component(view) <KeyPress-Up> \
365	[itcl::code $this Pan set 0 -10]
366	bind $itk_component(view) <KeyPress-Down> \
367	[itcl::code $this Pan set 0 10]
368	bind $itk_component(view) <Shift-KeyPress-Left> \
369	[itcl::code $this Pan set -2 0]
370	bind $itk_component(view) <Shift-KeyPress-Right> \
371	[itcl::code $this Pan set 2 0]
372	bind $itk_component(view) <Shift-KeyPress-Up> \
373	[itcl::code $this Pan set 0 -2]
374	bind $itk_component(view) <Shift-KeyPress-Down> \
375	[itcl::code $this Pan set 0 2]
376
377	# Bindings for zoom via keyboard
378	bind $itk_component(view) <KeyPress-Prior> \
379	[itcl::code $this Zoom out]
380	bind $itk_component(view) <KeyPress-Next> \
381	[itcl::code $this Zoom in]
382
383	bind $itk_component(view) <Enter> "focus $itk_component(view)"
384
385	if {[string equal "x11" [tk windowingsystem]]} {
386	# Bindings for zoom via mouse
387	bind $itk_component(view) <4> [itcl::code $this Zoom out]
388	bind $itk_component(view) <5> [itcl::code $this Zoom in]
389	}
390
391	set _image(download) [image create photo]
392
393	eval itk_initialize $args
394
395	EnableWaitDialog 900
396	Connect
397	}
398
399	# ----------------------------------------------------------------------
400	# DESTRUCTOR
401	# ----------------------------------------------------------------------
402	itcl::body Rappture::VtkImageViewer::destructor {} {
403	Disconnect
404	image delete $_image(plot)
405	image delete $_image(download)
406	catch { blt::arcball destroy $_arcball }
407	}
408
409	itcl::body Rappture::VtkImageViewer::DoResize {} {
410	if { $_width < 2 } {
411	set _width 500
412	}
413	if { $_height < 2 } {
414	set _height 500
415	}
416	set _start [clock clicks -milliseconds]
417	SendCmd "screen size [expr $_width - 20] $_height"
418
419	set font "Arial 8"
420	set lh [font metrics $font -linespace]
421	set h [expr {$_height - 2 * ($lh + 2)}]
422	if { $h != $_legendHeight } {
423	EventuallyRequestLegend
424	} else {
425	DrawLegend
426	}
427	set _resizePending 0
428	}
429
430	itcl::body Rappture::VtkImageViewer::DoRotate {} {
431	SendCmd "camera orient [ViewToQuaternion]"
432	set _rotatePending 0
433	}
434
435	itcl::body Rappture::VtkImageViewer::EventuallyRequestLegend {} {
436	if { !$_legendPending } {
437	set _legendPending 1
438	$_dispatcher event -idle !legend
439	}
440	}
441
442	itcl::body Rappture::VtkImageViewer::EventuallyResize { w h } {
443	set _width $w
444	set _height $h
445	$_arcball resize $w $h
446	if { !$_resizePending } {
447	set _resizePending 1
448	$_dispatcher event -after 250 !resize
449	}
450	}
451
452	set rotate_delay 100
453
454	itcl::body Rappture::VtkImageViewer::EventuallyRotate { q } {
455	QuaternionToView $q
456	if { !$_rotatePending } {
457	set _rotatePending 1
458	global rotate_delay
459	$_dispatcher event -after $rotate_delay !rotate
460	}
461	}
462
463	# ----------------------------------------------------------------------
464	# USAGE: add <dataobj> ?<settings>?
465	#
466	# Clients use this to add a data object to the plot. The optional
467	# <settings> are used to configure the plot. Allowed settings are
468	# -color, -brightness, -width, -linestyle, and -raise.
469	# ----------------------------------------------------------------------
470	itcl::body Rappture::VtkImageViewer::add {dataobj {settings ""}} {
471	if { ![$dataobj isvalid] } {
472	return; # Object doesn't contain valid data.
473	}
474	array set params {
475	-color auto
476	-width 1
477	-linestyle solid
478	-brightness 0
479	-raise 0
480	-description ""
481	-param ""
482	-type ""
483	}
484	array set params $settings
485	set params(-description) ""
486	set params(-param) ""
487	array set params $settings
488
489	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
490	# can't handle -autocolors yet
491	set params(-color) white
492	}
493	set pos [lsearch -exact $_dlist $dataobj]
494	if {$pos < 0} {
495	lappend _dlist $dataobj
496	}
497	set _obj2ovride($dataobj-color) $params(-color)
498	set _obj2ovride($dataobj-width) $params(-width)
499	set _obj2ovride($dataobj-raise) $params(-raise)
500	$_dispatcher event -idle !rebuild
501	}
502
503
504	# ----------------------------------------------------------------------
505	# USAGE: delete ?<dataobj1> <dataobj2> ...?
506	#
507	# Clients use this to delete a dataobj from the plot. If no dataobjs
508	# are specified, then all dataobjs are deleted. No data objects are
509	# deleted. They are only removed from the display list.
510	#
511	# ----------------------------------------------------------------------
512	itcl::body Rappture::VtkImageViewer::delete {args} {
513	if { [llength $args] == 0} {
514	set args $_dlist
515	}
516	# Delete all specified dataobjs
517	set changed 0
518	foreach dataobj $args {
519	set pos [lsearch -exact $_dlist $dataobj]
520	if { $pos < 0 } {
521	continue; # Don't know anything about it.
522	}
523	# Remove it from the dataobj list.
524	set _dlist [lreplace $_dlist $pos $pos]
525	array unset _obj2ovride $dataobj-*
526	array unset _settings $dataobj-*
527	set changed 1
528	}
529	# If anything changed, then rebuild the plot
530	if { $changed } {
531	$_dispatcher event -idle !rebuild
532	}
533	}
534
535	# ----------------------------------------------------------------------
536	# USAGE: get ?-objects?
537	# USAGE: get ?-visible?
538	# USAGE: get ?-image view?
539	#
540	# Clients use this to query the list of objects being plotted, in
541	# order from bottom to top of this result. The optional "-image"
542	# flag can also request the internal images being shown.
543	# ----------------------------------------------------------------------
544	itcl::body Rappture::VtkImageViewer::get {args} {
545	if {[llength $args] == 0} {
546	set args "-objects"
547	}
548	set op [lindex $args 0]
549	switch -- $op {
550	"-objects" {
551	# put the dataobj list in order according to -raise options
552	set dlist {}
553	foreach dataobj $_dlist {
554	if { ![IsValidObject $dataobj] } {
555	continue
556	}
557	if {[info exists _obj2ovride($dataobj-raise)] &&
558	$_obj2ovride($dataobj-raise)} {
559	set dlist [linsert $dlist 0 $dataobj]
560	} else {
561	lappend dlist $dataobj
562	}
563	}
564	return $dlist
565	}
566	"-visible" {
567	set dlist {}
568	foreach dataobj $_dlist {
569	if { ![IsValidObject $dataobj] } {
570	continue
571	}
572	if { ![info exists _obj2ovride($dataobj-raise)] } {
573	# No setting indicates that the object isn't visible.
574	continue
575	}
576	# Otherwise use the -raise parameter to put the object to
577	# the front of the list.
578	if { $_obj2ovride($dataobj-raise) } {
579	set dlist [linsert $dlist 0 $dataobj]
580	} else {
581	lappend dlist $dataobj
582	}
583	}
584	return $dlist
585	}
586	-image {
587	if {[llength $args] != 2} {
588	error "wrong # args: should be \"get -image view\""
589	}
590	switch -- [lindex $args end] {
591	view {
592	return $_image(plot)
593	}
594	default {
595	error "bad image name \"[lindex $args end]\": should be view"
596	}
597	}
598	}
599	default {
600	error "bad option \"$op\": should be -objects or -image"
601	}
602	}
603	}
604
605	#
606	# scale --
607	#
608	# This gets called either incrementally as new simulations are
609	# added or all at once as a sequence of images.
610	# This accounts for all objects--even those not showing on the
611	# screen. Because of this, the limits are appropriate for all
612	# objects as the user scans through data in the ResultSet viewer.
613	#
614	itcl::body Rappture::VtkImageViewer::scale {args} {
615	foreach dataobj $args {
616	if { ![$dataobj isvalid] } {
617	continue; # Object doesn't contain valid data.
618	}
619	foreach axis { x y } {
620	set lim [$dataobj limits $axis]
621	if { ![info exists _limits($axis)] } {
622	set _limits($axis) $lim
623	continue
624	}
625	foreach {min max} $lim break
626	foreach {amin amax} $_limits($axis) break
627	if { $amin > $min } {
628	set amin $min
629	}
630	if { $amax < $max } {
631	set amax $max
632	}
633	set _limits($axis) [list $amin $amax]
634	set units [$dataobj hints ${axis}units]
635	set found($units) 1
636	}
637	foreach { fname lim } [$dataobj fieldlimits] {
638	if { ![info exists _limits($fname)] } {
639	set _limits($fname) $lim
640	continue
641	}
642	foreach {min max} $lim break
643	foreach {fmin fmax} $_limits($fname) break
644	if { $fmin > $min } {
645	set fmin $min
646	}
647	if { $fmax < $max } {
648	set fmax $max
649	}
650	set _limits($fname) [list $fmin $fmax]
651	}
652	}
653	if { [array size found] > 1 } {
654	set _settings(-stretchtofit) 1
655	} else {
656	# Check if the range of the x and y axes requires that we stretch
657	# the contour to fit the plotting area. This can happen when the
658	# x and y scales differ greatly (> 100x)
659	foreach {xmin xmax} $_limits(x) break
660	foreach {ymin ymax} $_limits(y) break
661	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
662	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
663	set _settings(-stretchtofit) 1
664	}
665	}
666	}
667
668	# ----------------------------------------------------------------------
669	# USAGE: download coming
670	# USAGE: download controls <downloadCommand>
671	# USAGE: download now
672	#
673	# Clients use this method to create a downloadable representation
674	# of the plot. Returns a list of the form {ext string}, where
675	# "ext" is the file extension (indicating the type of data) and
676	# "string" is the data itself.
677	# ----------------------------------------------------------------------
678	itcl::body Rappture::VtkImageViewer::download {option args} {
679	switch $option {
680	coming {
681	if {[catch {
682	blt::winop snap $itk_component(plotarea) $_image(download)
683	}]} {
684	$_image(download) configure -width 1 -height 1
685	$_image(download) put #000000
686	}
687	}
688	controls {
689	set popup .vtkviewerdownload
690	if { ![winfo exists .vtkviewerdownload] } {
691	set inner [BuildDownloadPopup $popup [lindex $args 0]]
692	} else {
693	set inner [$popup component inner]
694	}
695	set _downloadPopup(image_controls) $inner.image_frame
696	set num [llength [get]]
697	set num [expr {($num == 1) ? "1 result" : "$num results"}]
698	set word [Rappture::filexfer::label downloadWord]
699	$inner.summary configure -text "$word $num in the following format:"
700	update idletasks ;# Fix initial sizes
701	return $popup
702	}
703	now {
704	set popup .vtkviewerdownload
705	if {[winfo exists .vtkviewerdownload]} {
706	$popup deactivate
707	}
708	switch -- $_downloadPopup(format) {
709	"image" {
710	return [$this GetImage [lindex $args 0]]
711	}
712	"vtk" {
713	return [$this GetVtkData [lindex $args 0]]
714	}
715	}
716	return ""
717	}
718	default {
719	error "bad option \"$option\": should be coming, controls, now"
720	}
721	}
722	}
723
724	# ----------------------------------------------------------------------
725	# USAGE: Connect ?<host:port>,<host:port>...?
726	#
727	# Clients use this method to establish a connection to a new
728	# server, or to reestablish a connection to the previous server.
729	# Any existing connection is automatically closed.
730	# ----------------------------------------------------------------------
731	itcl::body Rappture::VtkImageViewer::Connect {} {
732	global readyForNextFrame
733	set readyForNextFrame 1
734	set _hosts [GetServerList "vtkvis"]
735	if { "" == $_hosts } {
736	return 0
737	}
738	set _reset 1
739	set result [VisViewer::Connect $_hosts]
740	if { $result } {
741	if { $_reportClientInfo } {
742	# Tell the server the viewer, hub, user and session.
743	# Do this immediately on connect before buffering any commands
744	global env
745
746	set info {}
747	set user "???"
748	if { [info exists env(USER)] } {
749	set user $env(USER)
750	}
751	set session "???"
752	if { [info exists env(SESSION)] } {
753	set session $env(SESSION)
754	}
755	lappend info "version" "$Rappture::version"
756	lappend info "build" "$Rappture::build"
757	lappend info "svnurl" "$Rappture::svnurl"
758	lappend info "installdir" "$Rappture::installdir"
759	lappend info "hub" [exec hostname]
760	lappend info "client" "vtkimageviewer"
761	lappend info "user" $user
762	lappend info "session" $session
763	SendCmd "clientinfo [list $info]"
764	}
765	set w [winfo width $itk_component(view)]
766	set h [winfo height $itk_component(view)]
767	EventuallyResize $w $h
768	}
769	return $result
770	}
771
772	#
773	# isconnected --
774	#
775	# Indicates if we are currently connected to the visualization server.
776	#
777	itcl::body Rappture::VtkImageViewer::isconnected {} {
778	return [VisViewer::IsConnected]
779	}
780
781	#
782	# disconnect --
783	#
784	itcl::body Rappture::VtkImageViewer::disconnect {} {
785	Disconnect
786	set _reset 1
787	}
788
789	#
790	# Disconnect --
791	#
792	# Clients use this method to disconnect from the current rendering
793	# server.
794	#
795	itcl::body Rappture::VtkImageViewer::Disconnect {} {
796	VisViewer::Disconnect
797
798	$_dispatcher cancel !rebuild
799	$_dispatcher cancel !resize
800	$_dispatcher cancel !rotate
801	$_dispatcher cancel !legend
802	# disconnected -- no more data sitting on server
803	array unset _datasets
804	array unset _data
805	array unset _colormaps
806	array unset _obj2datasets
807	global readyForNextFrame
808	set readyForNextFrame 1
809	}
810
811	# ----------------------------------------------------------------------
812	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
813	#
814	# Invoked automatically whenever the "image" command comes in from
815	# the rendering server. Indicates that binary image data with the
816	# specified <size> will follow.
817	# ----------------------------------------------------------------------
818	itcl::body Rappture::VtkImageViewer::ReceiveImage { args } {
819	global readyForNextFrame
820	set readyForNextFrame 1
821	array set info {
822	-token "???"
823	-bytes 0
824	-type image
825	}
826	array set info $args
827	set bytes [ReceiveBytes $info(-bytes)]
828	if { $info(-type) == "image" } {
829	if 0 {
830	set f [open "last.ppm" "w"]
831	fconfigure $f -encoding binary
832	puts -nonewline $f $bytes
833	close $f
834	}
835	$_image(plot) configure -data $bytes
836	set time [clock seconds]
837	set date [clock format $time]
838	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
839	if { $_start > 0 } {
840	set finish [clock clicks -milliseconds]
841	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
842	set _start 0
843	}
844	} elseif { $info(type) == "print" } {
845	set tag $this-print-$info(-token)
846	set _hardcopy($tag) $bytes
847	}
848	}
849
850	#
851	# ReceiveDataset --
852	#
853	itcl::body Rappture::VtkImageViewer::ReceiveDataset { args } {
854	if { ![isconnected] } {
855	return
856	}
857	set option [lindex $args 0]
858	switch -- $option {
859	"scalar" {
860	set option [lindex $args 1]
861	switch -- $option {
862	"world" {
863	foreach { x y z value tag } [lrange $args 2 end] break
864	}
865	"pixel" {
866	foreach { x y value tag } [lrange $args 2 end] break
867	}
868	}
869	}
870	"vector" {
871	set option [lindex $args 1]
872	switch -- $option {
873	"world" {
874	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
875	}
876	"pixel" {
877	foreach { x y vx vy vz tag } [lrange $args 2 end] break
878	}
879	}
880	}
881	"names" {
882	foreach { name } [lindex $args 1] {
883	#puts stderr "Dataset: $name"
884	}
885	}
886	default {
887	error "unknown dataset option \"$option\" from server"
888	}
889	}
890	}
891
892	# ----------------------------------------------------------------------
893	# USAGE: Rebuild
894	#
895	# Called automatically whenever something changes that affects the
896	# data in the widget. Clears any existing data and rebuilds the
897	# widget to display new data.
898	# ----------------------------------------------------------------------
899	itcl::body Rappture::VtkImageViewer::Rebuild {} {
900	set w [winfo width $itk_component(view)]
901	set h [winfo height $itk_component(view)]
902	if { $w < 2 \|\| $h < 2 } {
903	update
904	$_dispatcher event -idle !rebuild
905	return
906	}
907
908	# Turn on buffering of commands to the server. We don't want to
909	# be preempted by a server disconnect/reconnect (which automatically
910	# generates a new call to Rebuild).
911	StartBufferingCommands
912
913	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
914	set _width $w
915	set _height $h
916	$_arcball resize $w $h
917	DoResize
918	if { $_settings(-stretchtofit) } {
919	AdjustSetting -stretchToFit
920	}
921	}
922	if { $_reset } {
923	#
924	# Reset the camera and other view parameters
925	#
926	InitSettings -view3d -background
927
928	SendCmd "axis lrot z 90"
929	$_arcball quaternion [ViewToQuaternion]
930	if {$_settings(-view3d) } {
931	if { $_view(-ortho)} {
932	SendCmd "camera mode ortho"
933	} else {
934	SendCmd "camera mode persp"
935	}
936	DoRotate
937	SendCmd "camera reset"
938	}
939	PanCamera
940	StopBufferingCommands
941	SendCmd "imgflush"
942	StartBufferingCommands
943	}
944
945	set _first ""
946	# Start off with no datasets are visible.
947	SendCmd "dataset visible 0"
948	foreach dataobj [get -objects] {
949	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
950	set _first $dataobj
951	}
952	set _obj2datasets($dataobj) ""
953	foreach comp [$dataobj components] {
954	set tag $dataobj-$comp
955	if { ![info exists _datasets($tag)] } {
956	set bytes [$dataobj vtkdata $comp]
957	if 0 {
958	set f [open /tmp/vtkimage.vtk "w"]
959	fconfigure $f -translation binary -encoding binary
960	puts -nonewline $f $bytes
961	close $f
962	}
963	set length [string length $bytes]
964	if { $_reportClientInfo } {
965	set info {}
966	lappend info "tool_id" [$dataobj hints toolid]
967	lappend info "tool_name" [$dataobj hints toolname]
968	lappend info "tool_title" [$dataobj hints tooltitle]
969	lappend info "tool_command" [$dataobj hints toolcommand]
970	lappend info "tool_revision" [$dataobj hints toolrevision]
971	lappend info "dataset_label" [$dataobj hints label]
972	lappend info "dataset_size" $length
973	lappend info "dataset_tag" $tag
974	SendCmd "clientinfo [list $info]"
975	}
976	SendCmd "dataset add $tag data follows $length"
977	SendData $bytes
978	set _datasets($tag) 1
979	SetObjectStyle $dataobj $comp
980	}
981	lappend _obj2datasets($dataobj) $tag
982	if { [info exists _obj2ovride($dataobj-raise)] } {
983	# Setting dataset visible enables outline
984	# and image
985	SendCmd "dataset visible 1 $tag"
986	}
987	}
988	}
989	if { $_first != "" } {
990	$itk_component(field) choices delete 0 end
991	$itk_component(fieldmenu) delete 0 end
992	array unset _fields
993	set _curFldName ""
994	foreach cname [$_first components] {
995	foreach fname [$_first fieldnames $cname] {
996	if { [info exists _fields($fname)] } {
997	continue
998	}
999	foreach { label units components } \
1000	[$_first fieldinfo $fname] break
1001	$itk_component(field) choices insert end "$fname" "$label"
1002	$itk_component(fieldmenu) add radiobutton -label "$label" \
1003	-value $label -variable [itcl::scope _curFldLabel] \
1004	-selectcolor red \
1005	-activebackground $itk_option(-plotbackground) \
1006	-activeforeground $itk_option(-plotforeground) \
1007	-font "Arial 8" \
1008	-command [itcl::code $this Combo invoke]
1009	set _fields($fname) [list $label $units $components]
1010	if { $_curFldName == "" } {
1011	set _curFldName $fname
1012	set _curFldLabel $label
1013	}
1014	}
1015	}
1016	$itk_component(field) value $_curFldLabel
1017	}
1018	InitSettings -stretchtofit -outline
1019
1020	if { $_reset } {
1021	SendCmd "axis tickpos outside"
1022	#SendCmd "axis lformat all %g"
1023
1024	foreach axis { x y z } {
1025	set label ""
1026	if { $_first != "" } {
1027	set label [$_first hints ${axis}label]
1028	}
1029	if { $label == "" } {
1030	set label [string toupper $axis]
1031	}
1032	# May be a space in the axis label.
1033	SendCmd [list axis name $axis $label]
1034
1035	set units ""
1036	if { $_first != "" } {
1037	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1038	if {$_curFldName != ""} {
1039	set units [lindex $_fields($_curFldName) 1]
1040	}
1041	} else {
1042	set units [$_first hints ${axis}units]
1043	}
1044	}
1045	if { $units != "" } {
1046	# May be a space in the axis units.
1047	SendCmd [list axis units $axis $units]
1048	}
1049	}
1050	#
1051	# Reset the camera and other view parameters
1052	#
1053	$_arcball quaternion [ViewToQuaternion]
1054	if {$_settings(-view3d) } {
1055	if { $_view(-ortho)} {
1056	SendCmd "camera mode ortho"
1057	} else {
1058	SendCmd "camera mode persp"
1059	}
1060	DoRotate
1061	SendCmd "camera reset"
1062	}
1063	PanCamera
1064	InitSettings -xgrid -ygrid -zgrid \
1065	-axisvisible -axislabels -field -view3d
1066	if { [array size _fields] < 2 } {
1067	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1068	}
1069	RequestLegend
1070	set _reset 0
1071	}
1072	global readyForNextFrame
1073	set readyForNextFrame 0; # Don't advance to the next frame
1074
1075	# Actually write the commands to the server socket. If it fails, we don't
1076	# care. We're finished here.
1077	blt::busy hold $itk_component(hull)
1078	StopBufferingCommands
1079	blt::busy release $itk_component(hull)
1080	}
1081
1082	# ----------------------------------------------------------------------
1083	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1084	#
1085	# Returns a list of server IDs for the current datasets being displayed. This
1086	# is normally a single ID, but it might be a list of IDs if the current data
1087	# object has multiple components.
1088	# ----------------------------------------------------------------------
1089	itcl::body Rappture::VtkImageViewer::CurrentDatasets {args} {
1090	set flag [lindex $args 0]
1091	switch -- $flag {
1092	"-all" {
1093	if { [llength $args] > 1 } {
1094	error "CurrentDatasets: can't specify dataobj after \"-all\""
1095	}
1096	set dlist [get -objects]
1097	}
1098	"-visible" {
1099	if { [llength $args] > 1 } {
1100	set dlist {}
1101	set args [lrange $args 1 end]
1102	foreach dataobj $args {
1103	if { [info exists _obj2ovride($dataobj-raise)] } {
1104	lappend dlist $dataobj
1105	}
1106	}
1107	} else {
1108	set dlist [get -visible]
1109	}
1110	}
1111	default {
1112	set dlist $args
1113	}
1114	}
1115	set rlist ""
1116	foreach dataobj $dlist {
1117	foreach comp [$dataobj components] {
1118	set tag $dataobj-$comp
1119	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1120	lappend rlist $tag
1121	}
1122	}
1123	}
1124	return $rlist
1125	}
1126
1127	# ----------------------------------------------------------------------
1128	# USAGE: Zoom in
1129	# USAGE: Zoom out
1130	# USAGE: Zoom reset
1131	#
1132	# Called automatically when the user clicks on one of the zoom
1133	# controls for this widget. Changes the zoom for the current view.
1134	# ----------------------------------------------------------------------
1135	itcl::body Rappture::VtkImageViewer::Zoom {option} {
1136	switch -- $option {
1137	"in" {
1138	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1139	SendCmd "camera zoom $_view(-zoom)"
1140	}
1141	"out" {
1142	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1143	SendCmd "camera zoom $_view(-zoom)"
1144	}
1145	"reset" {
1146	array set _view {
1147	-qw 0.36
1148	-qx 0.25
1149	-qy 0.50
1150	-qz 0.70
1151	-xpan 0
1152	-ypan 0
1153	-zoom 1.0
1154	}
1155	if { $_first != "" } {
1156	set location [$_first hints camera]
1157	if { $location != "" } {
1158	array set _view $location
1159	}
1160	}
1161	$_arcball quaternion [ViewToQuaternion]
1162	if {$_settings(-view3d) } {
1163	DoRotate
1164	}
1165	SendCmd "camera reset"
1166	}
1167	}
1168	}
1169
1170	itcl::body Rappture::VtkImageViewer::PanCamera {} {
1171	set x $_view(-xpan)
1172	set y $_view(-ypan)
1173	SendCmd "camera pan $x $y"
1174	}
1175
1176
1177	# ----------------------------------------------------------------------
1178	# USAGE: Rotate click <x> <y>
1179	# USAGE: Rotate drag <x> <y>
1180	# USAGE: Rotate release <x> <y>
1181	#
1182	# Called automatically when the user clicks/drags/releases in the
1183	# plot area. Moves the plot according to the user's actions.
1184	# ----------------------------------------------------------------------
1185	itcl::body Rappture::VtkImageViewer::Rotate {option x y} {
1186	switch -- $option {
1187	"click" {
1188	$itk_component(view) configure -cursor fleur
1189	set _click(x) $x
1190	set _click(y) $y
1191	}
1192	"drag" {
1193	if {[array size _click] == 0} {
1194	Rotate click $x $y
1195	} else {
1196	set w [winfo width $itk_component(view)]
1197	set h [winfo height $itk_component(view)]
1198	if {$w <= 0 \|\| $h <= 0} {
1199	return
1200	}
1201
1202	if {[catch {
1203	# this fails sometimes for no apparent reason
1204	set dx [expr {double($x-$_click(x))/$w}]
1205	set dy [expr {double($y-$_click(y))/$h}]
1206	}]} {
1207	return
1208	}
1209	if { $dx == 0 && $dy == 0 } {
1210	return
1211	}
1212	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1213	EventuallyRotate $q
1214	set _click(x) $x
1215	set _click(y) $y
1216	}
1217	}
1218	"release" {
1219	Rotate drag $x $y
1220	$itk_component(view) configure -cursor ""
1221	catch {unset _click}
1222	}
1223	default {
1224	error "bad option \"$option\": should be click, drag, release"
1225	}
1226	}
1227	}
1228
1229	itcl::body Rappture::VtkImageViewer::Pick {x y} {
1230	foreach tag [CurrentDatasets -visible] {
1231	SendCmd "dataset getscalar pixel $x $y $tag"
1232	}
1233	}
1234
1235	# ----------------------------------------------------------------------
1236	# USAGE: $this Pan click x y
1237	# $this Pan drag x y
1238	# $this Pan release x y
1239	#
1240	# Called automatically when the user clicks on one of the zoom
1241	# controls for this widget. Changes the zoom for the current view.
1242	# ----------------------------------------------------------------------
1243	itcl::body Rappture::VtkImageViewer::Pan {option x y} {
1244	switch -- $option {
1245	"set" {
1246	set w [winfo width $itk_component(view)]
1247	set h [winfo height $itk_component(view)]
1248	set x [expr $x / double($w)]
1249	set y [expr $y / double($h)]
1250	set _view(-xpan) [expr $_view(-xpan) + $x]
1251	set _view(-ypan) [expr $_view(-ypan) + $y]
1252	PanCamera
1253	return
1254	}
1255	"click" {
1256	set _click(x) $x
1257	set _click(y) $y
1258	$itk_component(view) configure -cursor hand1
1259	}
1260	"drag" {
1261	if { ![info exists _click(x)] } {
1262	set _click(x) $x
1263	}
1264	if { ![info exists _click(y)] } {
1265	set _click(y) $y
1266	}
1267	set w [winfo width $itk_component(view)]
1268	set h [winfo height $itk_component(view)]
1269	set dx [expr ($_click(x) - $x)/double($w)]
1270	set dy [expr ($_click(y) - $y)/double($h)]
1271	set _click(x) $x
1272	set _click(y) $y
1273	set _view(-xpan) [expr $_view(-xpan) - $dx]
1274	set _view(-ypan) [expr $_view(-ypan) - $dy]
1275	PanCamera
1276	}
1277	"release" {
1278	Pan drag $x $y
1279	$itk_component(view) configure -cursor ""
1280	}
1281	default {
1282	error "unknown option \"$option\": should set, click, drag, or release"
1283	}
1284	}
1285	}
1286
1287	# ----------------------------------------------------------------------
1288	# USAGE: InitSettings <what> ?<value>?
1289	#
1290	# Used internally to update rendering settings whenever parameters
1291	# change in the popup settings panel. Sends the new settings off
1292	# to the back end.
1293	# ----------------------------------------------------------------------
1294	itcl::body Rappture::VtkImageViewer::InitSettings { args } {
1295	foreach spec $args {
1296	if { [info exists _settings($_first${spec})] } {
1297	# Reset global setting with dataobj specific setting
1298	set _settings($spec) $_settings($_first${spec})
1299	}
1300	AdjustSetting $spec
1301	}
1302	}
1303
1304	#
1305	# AdjustSetting --
1306	#
1307	# Changes/updates a specific setting in the widget. There are
1308	# usually user-setable option. Commands are sent to the render
1309	# server.
1310	#
1311	itcl::body Rappture::VtkImageViewer::AdjustSetting {what {value ""}} {
1312	if { ![isconnected] } {
1313	return
1314	}
1315	switch -- $what {
1316	"-axisflymode" {
1317	set mode [$itk_component(axisflymode) value]
1318	set mode [$itk_component(axisflymode) translate $mode]
1319	set _settings($what) $mode
1320	SendCmd "axis flymode $mode"
1321	}
1322	"-axislabels" {
1323	set bool $_settings($what)
1324	SendCmd "axis labels all $bool"
1325	}
1326	"-axisminorticks" {
1327	set bool $_settings($what)
1328	SendCmd "axis minticks all $bool"
1329	}
1330	"-axisvisible" {
1331	set bool $_settings($what)
1332	SendCmd "axis visible all $bool"
1333	}
1334	"-background" {
1335	set bg [$itk_component(background) value]
1336	array set fgcolors {
1337	"black" "white"
1338	"white" "black"
1339	"grey" "black"
1340	}
1341	set fg $fgcolors($bg)
1342	configure -plotbackground $bg -plotforeground $fg
1343	$itk_component(view) delete "legend"
1344	SendCmd "screen bgcolor [Color2RGB $bg]"
1345	SendCmd "outline color [Color2RGB $fg]"
1346	SendCmd "axis color all [Color2RGB $fg]"
1347	DrawLegend
1348	}
1349	"-backingcolor" {
1350	set color [$itk_component(backingcolor) value]
1351	if { $color == "none" } {
1352	if { $_settings(-backingvisible) } {
1353	SendCmd "image backing 0"
1354	set _settings(-backingvisible) 0
1355	}
1356	} else {
1357	if { !$_settings(-backingvisible) } {
1358	SendCmd "image backing 1"
1359	set _settings(-backingvisible) 1
1360	}
1361	SendCmd "image color [Color2RGB $color]"
1362	}
1363	}
1364	"-backingvisible" {
1365	set bool $_settings($what)
1366	SendCmd "image backing $bool"
1367	}
1368	"-colormap" {
1369	set _changed($what) 1
1370	StartBufferingCommands
1371	set color [$itk_component(colormap) value]
1372	set _settings($what) $color
1373	SetCurrentColormap $color
1374	if {$_settings(-colormapdiscrete)} {
1375	SendCmd "colormap res $_settings(-numcolors) $color"
1376	}
1377	StopBufferingCommands
1378	EventuallyRequestLegend
1379	}
1380	"-colormapdiscrete" {
1381	set bool $_settings($what)
1382	StartBufferingCommands
1383	if {$bool} {
1384	SendCmd "colormap res $_settings(-numcolors)"
1385	} else {
1386	SendCmd "colormap res default"
1387	}
1388	StopBufferingCommands
1389	EventuallyRequestLegend
1390	}
1391	"-field" {
1392	set label [$itk_component(field) value]
1393	set fname [$itk_component(field) translate $label]
1394	set _settings($what) $fname
1395	if { [info exists _fields($fname)] } {
1396	foreach { label units components } $_fields($fname) break
1397	if { $components > 1 } {
1398	set _colorMode vmag
1399	} else {
1400	set _colorMode scalar
1401	}
1402	set _curFldName $fname
1403	set _curFldLabel $label
1404	} else {
1405	puts stderr "unknown field \"$fname\""
1406	return
1407	}
1408
1409	# Get the new limits because the field changed.
1410	SendCmd "dataset scalar $_curFldName"
1411	#SendCmd "image colormode scalar $_curFldName"
1412	SendCmd "camera reset"
1413	DrawLegend
1414	}
1415	"-view3d" {
1416	set bool $_settings($what)
1417	set c $itk_component(view)
1418	StartBufferingCommands
1419	# Fix image scale: 0 for contours, 1 for images.
1420	if { $bool } {
1421	set _settings(-opacity) $_settings(-saveopacity)
1422	} else {
1423	set _settings(-opacity) 100
1424	}
1425	AdjustSetting -opacity
1426	if { $bool } {
1427	$itk_component(opacity) configure -state normal
1428	$itk_component(opacity_l) configure -state normal
1429	if {$_view(-ortho)} {
1430	SendCmd "camera mode ortho"
1431	} else {
1432	SendCmd "camera mode persp"
1433	}
1434	SendCmd "camera aspect native"
1435	} else {
1436	$itk_component(opacity) configure -state disabled
1437	$itk_component(opacity_l) configure -state disabled
1438	SendCmd "camera mode image"
1439	if {$_settings(-stretchtofit)} {
1440	SendCmd "camera aspect window"
1441	}
1442	}
1443	if { $bool } {
1444	set q [ViewToQuaternion]
1445	$_arcball quaternion $q
1446	SendCmd "camera orient $q"
1447	} else {
1448	bind $c <ButtonPress-1> {}
1449	bind $c <B1-Motion> {}
1450	bind $c <ButtonRelease-1> {}
1451	}
1452	SendCmd "camera reset"
1453	# Fix the mouse bindings for rotation/panning and the
1454	# camera mode. Ideally we'd create a bindtag for these.
1455	if { $bool } {
1456	# Bindings for rotation via mouse
1457	bind $c <ButtonPress-1> \
1458	[itcl::code $this Rotate click %x %y]
1459	bind $c <B1-Motion> \
1460	[itcl::code $this Rotate drag %x %y]
1461	bind $c <ButtonRelease-1> \
1462	[itcl::code $this Rotate release %x %y]
1463	}
1464	StopBufferingCommands
1465	}
1466	"-window" {
1467	set val $_settings($what)
1468	SendCmd "image window $val"
1469	}
1470	"-level" {
1471	set val $_settings($what)
1472	SendCmd "image level $val"
1473	}
1474	"-legendvisible" {
1475	if { !$_settings($what) } {
1476	$itk_component(view) delete legend
1477	}
1478	DrawLegend
1479	}
1480	"-opacity" {
1481	set _changed($what) 1
1482	if { $_settings(-view3d) } {
1483	set _settings(-saveopacity) $_settings($what)
1484	set val [expr $_settings($what) * 0.01]
1485	SendCmd "image opacity $val"
1486	} else {
1487	SendCmd "image opacity 1.0"
1488	}
1489	}
1490	"-outline" {
1491	set bool $_settings($what)
1492	SendCmd "outline visible $bool"
1493	}
1494	"-stretchtofit" {
1495	set bool $_settings($what)
1496	if { $bool } {
1497	if { $_settings(-view3d) } {
1498	SendCmd "camera aspect native"
1499	} else {
1500	SendCmd "camera aspect window"
1501	}
1502	} else {
1503	SendCmd "camera aspect native"
1504	}
1505	}
1506	"-xgrid" - "-ygrid" - "-zgrid" {
1507	set axis [string tolower [string range $what 1 1]]
1508	set bool $_settings($what)
1509	SendCmd "axis grid $axis $bool"
1510	}
1511	default {
1512	error "don't know how to fix $what"
1513	}
1514	}
1515	}
1516
1517	#
1518	# RequestLegend --
1519	#
1520	# Request a new legend from the server. The size of the legend
1521	# is determined from the height of the canvas.
1522	#
1523	# This should be called when
1524	# 1. A new current colormap is set.
1525	# 2. Window is resized.
1526	# 3. The limits of the data have changed. (Just need a redraw).
1527	# 4. Number of isolines have changed. (Just need a redraw).
1528	# 5. Legend becomes visible (Just need a redraw).
1529	#
1530	itcl::body Rappture::VtkImageViewer::RequestLegend {} {
1531	set _legendPending 0
1532	set font "Arial 8"
1533	set w 12
1534	set lineht [font metrics $font -linespace]
1535	# color ramp height = (canvas height) - (min and max value lines) - 2
1536	set h [expr {$_height - 2 * ($lineht + 2)}]
1537	set _legendHeight $h
1538
1539	set fname $_curFldName
1540	if { [string match "component*" $fname] } {
1541	set title ""
1542	} else {
1543	if { [info exists _fields($fname)] } {
1544	foreach { title units } $_fields($fname) break
1545	if { $units != "" } {
1546	set title [format "%s (%s)" $title $units]
1547	}
1548	} else {
1549	set title $fname
1550	}
1551	}
1552	# If there's a title too, substract one more line
1553	if { $title != "" } {
1554	incr h -$lineht
1555	}
1556	if { $h < 1 } {
1557	return
1558	}
1559	# Set the legend on the first image dataset.
1560	if { $_currentColormap != "" && $_currentColormap != "none" } {
1561	set cmap $_currentColormap
1562	if { ![info exists _colormaps($cmap)] } {
1563	BuildColormap $cmap
1564	set _colormaps($cmap) 1
1565	}
1566	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1567	SendCmd "legend2 $cmap $w $h"
1568	}
1569	}
1570
1571	#
1572	# SetCurrentColormap --
1573	#
1574	itcl::body Rappture::VtkImageViewer::SetCurrentColormap { name } {
1575	# Keep track of the colormaps that we build.
1576	if { $name != "none" && ![info exists _colormaps($name)] } {
1577	BuildColormap $name
1578	set _colormaps($name) 1
1579	}
1580	set _currentColormap $name
1581	SendCmd "image colormap $_currentColormap"
1582	}
1583
1584
1585	#
1586	# BuildColormap --
1587	#
1588	# Build the designated colormap on the server.
1589	#
1590	itcl::body Rappture::VtkImageViewer::BuildColormap { name } {
1591	set cmap [ColorsToColormap $name]
1592	if { [llength $cmap] == 0 } {
1593	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1594	}
1595	set amap "0.0 1.0 1.0 1.0"
1596	SendCmd "colormap add $name { $cmap } { $amap }"
1597	}
1598
1599	# ----------------------------------------------------------------------
1600	# CONFIGURATION OPTION: -mode
1601	# ----------------------------------------------------------------------
1602	itcl::configbody Rappture::VtkImageViewer::mode {
1603	switch -- $itk_option(-mode) {
1604	"volume" {
1605	set _settings(-view3d) 1
1606	}
1607	"vtkimage" {
1608	set _settings(-view3d) 0
1609	}
1610	default {
1611	error "unknown mode settings \"$itk_option(-mode)\""
1612	}
1613	}
1614	if { !$_reset } {
1615	AdjustSetting -view3d
1616	}
1617	}
1618
1619	# ----------------------------------------------------------------------
1620	# CONFIGURATION OPTION: -plotbackground
1621	# ----------------------------------------------------------------------
1622	itcl::configbody Rappture::VtkImageViewer::plotbackground {
1623	if { [isconnected] } {
1624	set rgb [Color2RGB $itk_option(-plotbackground)]
1625	if { !$_reset } {
1626	SendCmd "screen bgcolor $rgb"
1627	}
1628	$itk_component(view) configure -background $itk_option(-plotbackground)
1629	}
1630	}
1631
1632	# ----------------------------------------------------------------------
1633	# CONFIGURATION OPTION: -plotforeground
1634	# ----------------------------------------------------------------------
1635	itcl::configbody Rappture::VtkImageViewer::plotforeground {
1636	if { [isconnected] } {
1637	set rgb [Color2RGB $itk_option(-plotforeground)]
1638	if { !$_reset } {
1639	SendCmd "axis color all $rgb"
1640	SendCmd "outline color $rgb"
1641	}
1642	}
1643	}
1644
1645	itcl::body Rappture::VtkImageViewer::BuildImageTab {} {
1646
1647	set fg [option get $itk_component(hull) font Font]
1648	#set bfg [option get $itk_component(hull) boldFont Font]
1649
1650	set inner [$itk_component(main) insert end \
1651	-title "Image Settings" \
1652	-icon [Rappture::icon contour2]]
1653	$inner configure -borderwidth 4
1654
1655	checkbutton $inner.legend \
1656	-text "Legend" \
1657	-variable [itcl::scope _settings(-legendvisible)] \
1658	-command [itcl::code $this AdjustSetting -legendvisible] \
1659	-font "Arial 9"
1660
1661	checkbutton $inner.outline \
1662	-text "Outline" \
1663	-variable [itcl::scope _settings(-outline)] \
1664	-command [itcl::code $this AdjustSetting -outline] \
1665	-font "Arial 9"
1666
1667	checkbutton $inner.backing \
1668	-text "Backing" \
1669	-variable [itcl::scope _settings(-backingvisible)] \
1670	-command [itcl::code $this AdjustSetting -backingvisible] \
1671	-font "Arial 9"
1672
1673	checkbutton $inner.stretch \
1674	-text "Stretch to fit" \
1675	-variable [itcl::scope _settings(-stretchtofit)] \
1676	-command [itcl::code $this AdjustSetting -stretchtofit] \
1677	-font "Arial 9"
1678
1679	checkbutton $inner.colormapDiscrete \
1680	-text "Discrete Colormap" \
1681	-variable [itcl::scope _settings(-colormapdiscrete)] \
1682	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1683	-font "Arial 9"
1684
1685	itk_component add field_l {
1686	label $inner.field_l -text "Field" -font "Arial 9"
1687	} {
1688	ignore -font
1689	}
1690	itk_component add field {
1691	Rappture::Combobox $inner.field -width 10 -editable no
1692	}
1693	bind $inner.field <<Value>> \
1694	[itcl::code $this AdjustSetting -field]
1695
1696	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1697	itk_component add colormap {
1698	Rappture::Combobox $inner.colormap -width 10 -editable no
1699	}
1700	$inner.colormap choices insert end [GetColormapList -includeNone]
1701
1702	$itk_component(colormap) value "BCGYR"
1703	bind $inner.colormap <<Value>> \
1704	[itcl::code $this AdjustSetting -colormap]
1705
1706	label $inner.backingcolor_l -text "Backing Color" -font "Arial 9"
1707	itk_component add backingcolor {
1708	Rappture::Combobox $inner.backingcolor -width 10 -editable no
1709	}
1710	$inner.backingcolor choices insert end \
1711	"black" "black" \
1712	"blue" "blue" \
1713	"cyan" "cyan" \
1714	"green" "green" \
1715	"grey" "grey" \
1716	"magenta" "magenta" \
1717	"orange" "orange" \
1718	"red" "red" \
1719	"white" "white" \
1720	"none" "none"
1721
1722	$itk_component(backingcolor) value $_settings(-backingcolor)
1723	bind $inner.backingcolor <<Value>> \
1724	[itcl::code $this AdjustSetting -backingcolor]
1725
1726	label $inner.background_l -text "Background Color" -font "Arial 9"
1727	itk_component add background {
1728	Rappture::Combobox $inner.background -width 10 -editable no
1729	}
1730	$inner.background choices insert end \
1731	"black" "black" \
1732	"white" "white" \
1733	"grey" "grey"
1734
1735	$itk_component(background) value "white"
1736	bind $inner.background <<Value>> \
1737	[itcl::code $this AdjustSetting -background]
1738
1739	itk_component add opacity_l {
1740	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1741	} {
1742	ignore -font
1743	}
1744	itk_component add opacity {
1745	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1746	-variable [itcl::scope _settings(-opacity)] \
1747	-showvalue off \
1748	-command [itcl::code $this AdjustSetting -opacity]
1749	}
1750
1751	itk_component add window_l {
1752	label $inner.window_l -text "Window" -font "Arial 9"
1753	} {
1754	ignore -font
1755	}
1756	itk_component add window {
1757	::scale $inner.window -from 0 -to 255 -orient horizontal \
1758	-variable [itcl::scope _settings(-window)] \
1759	-showvalue off \
1760	-command [itcl::code $this AdjustSetting -window]
1761	}
1762	itk_component add level_l {
1763	label $inner.level_l -text "Level" -font "Arial 9"
1764	} {
1765	ignore -font
1766	}
1767	itk_component add level {
1768	::scale $inner.level -from 0 -to 255 -orient horizontal \
1769	-variable [itcl::scope _settings(-level)] \
1770	-showvalue off \
1771	-command [itcl::code $this AdjustSetting -level]
1772	}
1773
1774	frame $inner.separator1 -height 2 -relief sunken -bd 1
1775	frame $inner.separator2 -height 2 -relief sunken -bd 1
1776
1777	blt::table $inner \
1778	0,0 $inner.field_l -anchor w -pady 2 \
1779	0,1 $inner.field -anchor w -pady 2 -fill x \
1780	1,0 $inner.colormap_l -anchor w -pady 2 \
1781	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1782	2,0 $inner.backingcolor_l -anchor w -pady 2 \
1783	2,1 $inner.backingcolor -anchor w -pady 2 -fill x \
1784	3,0 $inner.background_l -anchor w -pady 2 \
1785	3,1 $inner.background -anchor w -pady 2 -fill x \
1786	4,0 $inner.backing -anchor w -pady 2 -cspan 2 \
1787	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1788	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1789	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1790	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
1791	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1792	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
1793	15,0 $inner.opacity_l -anchor w -pady 2 \
1794	15,1 $inner.opacity -fill x -pady 2 \
1795	16,0 $inner.window_l -anchor w -pady 2 \
1796	16,1 $inner.window -fill x -pady 2 \
1797	17,0 $inner.level_l -anchor w -pady 2 \
1798	17,1 $inner.level -fill x -pady 2
1799
1800	blt::table configure $inner r* c* -resize none
1801	blt::table configure $inner r19 c1 -resize expand
1802	}
1803
1804	itcl::body Rappture::VtkImageViewer::BuildAxisTab {} {
1805
1806	set fg [option get $itk_component(hull) font Font]
1807	#set bfg [option get $itk_component(hull) boldFont Font]
1808
1809	set inner [$itk_component(main) insert end \
1810	-title "Axis Settings" \
1811	-icon [Rappture::icon axis2]]
1812	$inner configure -borderwidth 4
1813
1814	checkbutton $inner.visible \
1815	-text "Axes" \
1816	-variable [itcl::scope _settings(-axisvisible)] \
1817	-command [itcl::code $this AdjustSetting -axisvisible] \
1818	-font "Arial 9"
1819	checkbutton $inner.labels \
1820	-text "Axis Labels" \
1821	-variable [itcl::scope _settings(-axislabels)] \
1822	-command [itcl::code $this AdjustSetting -axislabels] \
1823	-font "Arial 9"
1824	label $inner.grid_l -text "Grid" -font "Arial 9"
1825	checkbutton $inner.xgrid \
1826	-text "X" \
1827	-variable [itcl::scope _settings(-xgrid)] \
1828	-command [itcl::code $this AdjustSetting -xgrid] \
1829	-font "Arial 9"
1830	checkbutton $inner.ygrid \
1831	-text "Y" \
1832	-variable [itcl::scope _settings(-ygrid)] \
1833	-command [itcl::code $this AdjustSetting -ygrid] \
1834	-font "Arial 9"
1835	checkbutton $inner.zgrid \
1836	-text "Z" \
1837	-variable [itcl::scope _settings(-zgrid)] \
1838	-command [itcl::code $this AdjustSetting -zgrid] \
1839	-font "Arial 9"
1840	checkbutton $inner.minorticks \
1841	-text "Minor Ticks" \
1842	-variable [itcl::scope _settings(-axisminorticks)] \
1843	-command [itcl::code $this AdjustSetting -axisminorticks] \
1844	-font "Arial 9"
1845
1846	label $inner.mode_l -text "Mode" -font "Arial 9"
1847
1848	itk_component add axisflymode {
1849	Rappture::Combobox $inner.mode -width 10 -editable no
1850	}
1851	$inner.mode choices insert end \
1852	"static_triad" "static" \
1853	"closest_triad" "closest" \
1854	"furthest_triad" "farthest" \
1855	"outer_edges" "outer"
1856	$itk_component(axisflymode) value $_settings(-axisflymode)
1857	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
1858
1859	blt::table $inner \
1860	0,0 $inner.visible -anchor w -cspan 4 \
1861	1,0 $inner.labels -anchor w -cspan 4 \
1862	2,0 $inner.minorticks -anchor w -cspan 4 \
1863	4,0 $inner.grid_l -anchor w \
1864	4,1 $inner.xgrid -anchor w \
1865	4,2 $inner.ygrid -anchor w \
1866	4,3 $inner.zgrid -anchor w \
1867	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1868	5,1 $inner.mode -fill x -cspan 3
1869
1870	blt::table configure $inner r* c* -resize none
1871	blt::table configure $inner r7 c6 -resize expand
1872	blt::table configure $inner r3 -height 0.125i
1873	}
1874
1875	itcl::body Rappture::VtkImageViewer::BuildCameraTab {} {
1876	set inner [$itk_component(main) insert end \
1877	-title "Camera Settings" \
1878	-icon [Rappture::icon camera]]
1879	$inner configure -borderwidth 4
1880
1881	label $inner.view_l -text "view" -font "Arial 9"
1882	set f [frame $inner.view]
1883	foreach side { front back left right top bottom } {
1884	button $f.$side -image [Rappture::icon view$side] \
1885	-command [itcl::code $this SetOrientation $side]
1886	Rappture::Tooltip::for $f.$side "Change the view to $side"
1887	pack $f.$side -side left
1888	}
1889
1890	blt::table $inner \
1891	0,0 $inner.view_l -anchor e -pady 2 \
1892	0,1 $inner.view -anchor w -pady 2
1893	blt::table configure $inner r0 -resize none
1894
1895	set labels { qx qy qz qw xpan ypan zoom }
1896	set row 1
1897	foreach tag $labels {
1898	label $inner.${tag}label -text $tag -font "Arial 9"
1899	entry $inner.${tag} -font "Arial 9" -bg white \
1900	-textvariable [itcl::scope _view(-$tag)]
1901	bind $inner.${tag} <Return> \
1902	[itcl::code $this camera set -${tag}]
1903	bind $inner.${tag} <KP_Enter> \
1904	[itcl::code $this camera set -${tag}]
1905	blt::table $inner \
1906	$row,0 $inner.${tag}label -anchor e -pady 2 \
1907	$row,1 $inner.${tag} -anchor w -pady 2
1908	blt::table configure $inner r$row -resize none
1909	incr row
1910	}
1911	checkbutton $inner.ortho \
1912	-text "Orthographic Projection" \
1913	-variable [itcl::scope _view(-ortho)] \
1914	-command [itcl::code $this camera set -ortho] \
1915	-font "Arial 9"
1916	blt::table $inner \
1917	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1918	blt::table configure $inner r$row -resize none
1919	incr row
1920
1921	blt::table configure $inner c* -resize none
1922	blt::table configure $inner c2 -resize expand
1923	blt::table configure $inner r$row -resize expand
1924	}
1925
1926	#
1927	# camera --
1928	#
1929	itcl::body Rappture::VtkImageViewer::camera {option args} {
1930	switch -- $option {
1931	"show" {
1932	puts [array get _view]
1933	}
1934	"set" {
1935	set what [lindex $args 0]
1936	set x $_view($what)
1937	set code [catch { string is double $x } result]
1938	if { $code != 0 \|\| !$result } {
1939	return
1940	}
1941	switch -- $what {
1942	"-ortho" {
1943	if {$_view($what)} {
1944	SendCmd "camera mode ortho"
1945	} else {
1946	SendCmd "camera mode persp"
1947	}
1948	}
1949	"-xpan" - "-ypan" {
1950	PanCamera
1951	}
1952	"-qx" - "-qy" - "-qz" - "-qw" {
1953	set q [ViewToQuaternion]
1954	$_arcball quaternion $q
1955	EventuallyRotate $q
1956	}
1957	"-zoom" {
1958	SendCmd "camera zoom $_view($what)"
1959	}
1960	}
1961	}
1962	}
1963	}
1964
1965	itcl::body Rappture::VtkImageViewer::GetVtkData { args } {
1966	set bytes ""
1967	foreach dataobj [get] {
1968	foreach comp [$dataobj components] {
1969	set tag $dataobj-$comp
1970	set contents [$dataobj vtkdata $comp]
1971	append bytes "$contents\n"
1972	}
1973	}
1974	return [list .vtk $bytes]
1975	}
1976
1977	itcl::body Rappture::VtkImageViewer::GetImage { args } {
1978	if { [image width $_image(download)] > 0 &&
1979	[image height $_image(download)] > 0 } {
1980	set bytes [$_image(download) data -format "jpeg -quality 100"]
1981	set bytes [Rappture::encoding::decode -as b64 $bytes]
1982	return [list .jpg $bytes]
1983	}
1984	return ""
1985	}
1986
1987	itcl::body Rappture::VtkImageViewer::BuildDownloadPopup { popup command } {
1988	Rappture::Balloon $popup \
1989	-title "[Rappture::filexfer::label downloadWord] as..."
1990	set inner [$popup component inner]
1991	label $inner.summary -text "" -anchor w
1992	radiobutton $inner.vtk_button -text "VTK data file" \
1993	-variable [itcl::scope _downloadPopup(format)] \
1994	-font "Arial 9 " \
1995	-value vtk
1996	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1997	radiobutton $inner.image_button -text "Image File" \
1998	-variable [itcl::scope _downloadPopup(format)] \
1999	-font "Arial 9 " \
2000	-value image
2001	Rappture::Tooltip::for $inner.image_button \
2002	"Save as digital image."
2003
2004	button $inner.ok -text "Save" \
2005	-highlightthickness 0 -pady 2 -padx 3 \
2006	-command $command \
2007	-compound left \
2008	-image [Rappture::icon download]
2009
2010	button $inner.cancel -text "Cancel" \
2011	-highlightthickness 0 -pady 2 -padx 3 \
2012	-command [list $popup deactivate] \
2013	-compound left \
2014	-image [Rappture::icon cancel]
2015
2016	blt::table $inner \
2017	0,0 $inner.summary -cspan 2 \
2018	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2019	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2020	4,1 $inner.cancel -width .9i -fill y \
2021	4,0 $inner.ok -padx 2 -width .9i -fill y
2022	blt::table configure $inner r3 -height 4
2023	blt::table configure $inner r4 -pady 4
2024	raise $inner.image_button
2025	$inner.vtk_button invoke
2026	return $inner
2027	}
2028
2029	#
2030	# SetObjectStyle --
2031	#
2032	# Set the style of the image/contour object. This gets calls
2033	# for each dataset once as it is loaded. It can overridden by
2034	# the user controls.
2035	#
2036	#
2037	itcl::body Rappture::VtkImageViewer::SetObjectStyle { dataobj comp } {
2038	# Parse style string.
2039	set tag $dataobj-$comp
2040	array set style {
2041	-color none
2042	-opacity 1.0
2043	}
2044	set stylelist [$dataobj style $comp]
2045	if { $stylelist != "" } {
2046	array set style $stylelist
2047	}
2048	# This is too complicated. We want to set the colormap, number of
2049	# isolines and opacity for the dataset. They can be the default values,
2050	# the style hints loaded with the dataset, or set by user controls. As
2051	# datasets get loaded, they first use the defaults that are overidden
2052	# by the style hints. If the user changes the global controls, then that
2053	# overrides everything else. I don't know what it means when global
2054	# controls are specified as style hints by each dataset. It complicates
2055	# the code to handle aberrant cases.
2056
2057	if { $_changed(-opacity) } {
2058	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2059	}
2060	if { $_changed(-colormap) } {
2061	set style(-color) $_settings(-colormap)
2062	}
2063	if { $_currentColormap == "" } {
2064	$itk_component(colormap) value $style(-color)
2065	}
2066	if { [info exists style(-stretchtofit)] } {
2067	set _settings(-stretchtofit) $style(-stretchtofit)
2068	AdjustSetting -stretchToFit
2069	}
2070	SendCmd "outline add $tag"
2071	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2072	SendCmd "outline visible $_settings(-outline) $tag"
2073	SendCmd "image add $tag"
2074	SetCurrentColormap $style(-color)
2075	set color [$itk_component(backingcolor) value]
2076	SendCmd "image color [Color2RGB $color] $tag"
2077	SendCmd "image opacity $style(-opacity) $tag"
2078	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2079	}
2080
2081	itcl::body Rappture::VtkImageViewer::IsValidObject { dataobj } {
2082	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2083	return 0
2084	}
2085	return 1
2086	}
2087
2088	# ----------------------------------------------------------------------
2089	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2090	#
2091	# Invoked automatically whenever the "legend" command comes in from
2092	# the rendering server. Indicates that binary image data with the
2093	# specified <size> will follow.
2094	# ----------------------------------------------------------------------
2095	itcl::body Rappture::VtkImageViewer::ReceiveLegend { colormap title min max size } {
2096	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2097	if { [isconnected] } {
2098	set bytes [ReceiveBytes $size]
2099	if { ![info exists _image(legend)] } {
2100	set _image(legend) [image create photo]
2101	}
2102	$_image(legend) configure -data $bytes
2103	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2104	if { [catch {DrawLegend} errs] != 0 } {
2105	global errorInfo
2106	puts stderr "errs=$errs errorInfo=$errorInfo"
2107	}
2108	}
2109	}
2110
2111	#
2112	# DrawLegend --
2113	#
2114	# Draws the legend in the own canvas on the right side of the plot area.
2115	#
2116	itcl::body Rappture::VtkImageViewer::DrawLegend {} {
2117	set fname $_curFldName
2118	set c $itk_component(view)
2119	set w [winfo width $c]
2120	set h [winfo height $c]
2121	set font "Arial 8"
2122	set lineht [font metrics $font -linespace]
2123
2124	if { [string match "component*" $fname] } {
2125	set title ""
2126	} else {
2127	if { [info exists _fields($fname)] } {
2128	foreach { title units } $_fields($fname) break
2129	if { $units != "" } {
2130	set title [format "%s (%s)" $title $units]
2131	}
2132	} else {
2133	set title $fname
2134	}
2135	}
2136	set x [expr $w - 2]
2137	if { !$_settings(-legendvisible) } {
2138	$c delete legend
2139	return
2140	}
2141	if { [$c find withtag "legend"] == "" } {
2142	set y 2
2143	# If there's a legend title, create a text item for the title.
2144	$c create text $x $y \
2145	-anchor ne \
2146	-fill $itk_option(-plotforeground) -tags "title legend" \
2147	-font $font
2148	if { $title != "" } {
2149	incr y $lineht
2150	}
2151	$c create text $x $y \
2152	-anchor ne \
2153	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2154	-font $font
2155	incr y $lineht
2156	$c create image $x $y \
2157	-anchor ne \
2158	-image $_image(legend) -tags "colormap legend"
2159	$c create rectangle $x $y 1 1 \
2160	-fill "" -outline "" -tags "sensor legend"
2161	$c create text $x [expr {$h-2}] \
2162	-anchor se \
2163	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2164	-font $font
2165	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2166	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2167	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2168	}
2169
2170	set x2 $x
2171	set iw [image width $_image(legend)]
2172	set ih [image height $_image(legend)]
2173	set x1 [expr $x2 - ($iw*12)/10]
2174
2175	$c bind title <ButtonPress> [itcl::code $this Combo post]
2176	$c bind title <Enter> [itcl::code $this Combo activate]
2177	$c bind title <Leave> [itcl::code $this Combo deactivate]
2178	# Reset the item coordinates according the current size of the plot.
2179	if { [info exists _limits($_curFldName)] } {
2180	foreach { vmin vmax } $_limits($_curFldName) break
2181	$c itemconfigure vmin -text [format %g $vmin]
2182	$c itemconfigure vmax -text [format %g $vmax]
2183	}
2184	set y 2
2185	# If there's a legend title, move the title to the correct position
2186	if { $title != "" } {
2187	$c itemconfigure title -text $title
2188	$c coords title $x $y
2189	incr y $lineht
2190	}
2191	$c coords vmax $x $y
2192	incr y $lineht
2193	$c coords colormap $x $y
2194	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2195	$c raise sensor
2196	$c coords vmin $x [expr {$h - 2}]
2197	}
2198
2199	#
2200	# EnterLegend --
2201	#
2202	itcl::body Rappture::VtkImageViewer::EnterLegend { x y } {
2203	SetLegendTip $x $y
2204	}
2205
2206	#
2207	# MotionLegend --
2208	#
2209	itcl::body Rappture::VtkImageViewer::MotionLegend { x y } {
2210	Rappture::Tooltip::tooltip cancel
2211	set c $itk_component(view)
2212	set cw [winfo width $c]
2213	set ch [winfo height $c]
2214	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2215	SetLegendTip $x $y
2216	}
2217	}
2218
2219	#
2220	# LeaveLegend --
2221	#
2222	itcl::body Rappture::VtkImageViewer::LeaveLegend { } {
2223	Rappture::Tooltip::tooltip cancel
2224	.rappturetooltip configure -icon ""
2225	}
2226
2227	#
2228	# SetLegendTip --
2229	#
2230	itcl::body Rappture::VtkImageViewer::SetLegendTip { x y } {
2231	set fname $_curFldName
2232	set c $itk_component(view)
2233	set w [winfo width $c]
2234	set h [winfo height $c]
2235	set font "Arial 8"
2236	set lineht [font metrics $font -linespace]
2237
2238	set ih [image height $_image(legend)]
2239	# Subtract off the offset of the color ramp from the top of the canvas
2240	set iy [expr $y - ($lineht + 2)]
2241
2242	if { [string match "component*" $fname] } {
2243	set title ""
2244	} else {
2245	if { [info exists _fields($fname)] } {
2246	foreach { title units } $_fields($fname) break
2247	if { $units != "" } {
2248	set title [format "%s (%s)" $title $units]
2249	}
2250	} else {
2251	set title $fname
2252	}
2253	}
2254	# If there's a legend title, increase the offset by the line height.
2255	if { $title != "" } {
2256	incr iy -$lineht
2257	}
2258
2259	# Make a swatch of the selected color
2260	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2261	return
2262	}
2263
2264	if { ![info exists _image(swatch)] } {
2265	set _image(swatch) [image create photo -width 24 -height 24]
2266	}
2267	set color [eval format "\#%02x%02x%02x" $pixel]
2268	$_image(swatch) put black -to 0 0 23 23
2269	$_image(swatch) put $color -to 1 1 22 22
2270
2271	# Compute the value of the point
2272	if { [info exists _limits($fname)] } {
2273	foreach { vmin vmax } $_limits($fname) break
2274	set t [expr 1.0 - (double($iy) / double($ih-1))]
2275	set value [expr $t * ($vmax - $vmin) + $vmin]
2276	} else {
2277	set value 0.0
2278	}
2279	set tipx [expr $x + 15]
2280	set tipy [expr $y - 5]
2281	.rappturetooltip configure -icon $_image(swatch)
2282	if { [info exists _isolines($y)] } {
2283	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2284	} else {
2285	Rappture::Tooltip::text $c [format "$title %g" $value]
2286	}
2287	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2288	}
2289
2290	# ----------------------------------------------------------------------
2291	# USAGE: _dropdown post
2292	# USAGE: _dropdown unpost
2293	# USAGE: _dropdown select
2294	#
2295	# Used internally to handle the dropdown list for this combobox. The
2296	# post/unpost options are invoked when the list is posted or unposted
2297	# to manage the relief of the controlling button. The select option
2298	# is invoked whenever there is a selection from the list, to assign
2299	# the value back to the gauge.
2300	# ----------------------------------------------------------------------
2301	itcl::body Rappture::VtkImageViewer::Combo {option} {
2302	set c $itk_component(view)
2303	switch -- $option {
2304	post {
2305	foreach { x1 y1 x2 y2 } [$c bbox title] break
2306	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2307	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2308	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2309	tk_popup $itk_component(fieldmenu) $x $y
2310	}
2311	activate {
2312	$c itemconfigure title -fill red
2313	}
2314	deactivate {
2315	$c itemconfigure title -fill $itk_option(-plotforeground)
2316	}
2317	invoke {
2318	$itk_component(field) value $_curFldLabel
2319	AdjustSetting -field
2320	}
2321	default {
2322	error "bad option \"$option\": should be post, unpost, select"
2323	}
2324	}
2325	}
2326
2327	itcl::body Rappture::VtkImageViewer::SetOrientation { side } {
2328	array set positions {
2329	front "0.707107 0.707107 0 0"
2330	back "0 0 0.707107 0.707107"
2331	left "0.5 0.5 -0.5 -0.5"
2332	right "0.5 0.5 0.5 0.5"
2333	top "1 0 0 0"
2334	bottom "0 1 0 0"
2335	}
2336	foreach name { -qw -qx -qy -qz } value $positions($side) {
2337	set _view($name) $value
2338	}
2339	set q [ViewToQuaternion]
2340	$_arcball quaternion $q
2341	SendCmd "camera orient $q"
2342	SendCmd "camera reset"
2343	set _view(-xpan) 0
2344	set _view(-ypan) 0
2345	set _view(-zoom) 1.0
2346	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats: