File: SoXtMtlList.c++

package info (click to toggle)
inventor 2.1.5-10-21
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 36,312 kB
  • sloc: ansic: 33,864; lisp: 7,361; cpp: 3,874; yacc: 369; sh: 359; perl: 234; awk: 141; makefile: 81; csh: 35; sed: 11
file content (664 lines) | stat: -rw-r--r-- 17,546 bytes parent folder | download | duplicates (8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
/*
 *
 *  Copyright (C) 2000 Silicon Graphics, Inc.  All Rights Reserved. 
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  Further, this software is distributed without any warranty that it is
 *  free of the rightful claim of any third person regarding infringement
 *  or the like.  Any license provided herein, whether implied or
 *  otherwise, applies only to this software file.  Patent licenses, if
 *  any, provided herein do not apply to combinations of this program with
 *  other software, or any other product whatsoever.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 *  Mountain View, CA  94043, or:
 * 
 *  http://www.sgi.com 
 * 
 *  For further information regarding this notice, see: 
 * 
 *  http://oss.sgi.com/projects/GenInfo/NoticeExplan/
 *
 */

/*
 * Copyright (C) 1991-93   Silicon Graphics, Inc.
 *
 _______________________________________________________________________
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 |
 |   $Revision: 1.5 $
 |
 |   Classes:
 |	SoXtMaterialList
 |
 |   Author(s):	David Mott
 |
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */

#include <inttypes.h>
#include <stdio.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <stdlib.h>

#include <X11/StringDefs.h>
#include <Xm/Xm.h>
#include <Xm/CascadeBG.h>
#include <Xm/Form.h>
#include <Xm/List.h>
#include <Xm/RowColumn.h>
#include <Xm/ToggleB.h>
#include <Xm/ToggleBG.h>

#include <Inventor/SoDB.h>
#include <Inventor/misc/SoCallbackList.h>
#include <Inventor/Xt/SoXt.h>
#include <Inventor/Xt/SoXtMaterialList.h>
#include <Inventor/actions/SoSearchAction.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/errors/SoDebugError.h>

static char *bogusFile = "<none>";

#define TOGGLE_ON(BUTTON) \
    XmToggleButtonSetState((Widget) BUTTON, TRUE, FALSE);
#define TOGGLE_OFF(BUTTON) \
    XmToggleButtonSetState((Widget) BUTTON, FALSE, FALSE);

//
//	returns true if the passed file is a subdirectory in the current directory.
//	(call chdir() before calling this).
//
static SbBool
isDirectory(char *file)
{
    struct stat buf;
    SbBool is_dir = FALSE;

    if (stat(file, &buf) == 0)
	if ((buf.st_mode & S_IFMT) == S_IFDIR)
	    is_dir = 1;

    return (is_dir);
}

//
//  this returns TRUE if the file contains a material
//
static SbBool
isMtlFile(char *filename)
{
    // Make sure it's not . or ..
    if (filename[0] == '.') return FALSE;
    
    // read the file, search for SoMaterial
    SbBool fileHasMtl = FALSE;
    SoInput in;
    SoNode  *root;
    if (in.openFile(filename)) {
	if (SoDB::read(&in, root)) {
	    root->ref();
	    
	    // find the material node
	    SoSearchAction sa;
	    sa.setType(SoMaterial::getClassTypeId());
	    sa.apply(root);
	    fileHasMtl = (sa.getPath() != NULL);
	    
	    root->unref();
	}
    }
    
    return (fileHasMtl);
}


//
//  Fill in palette with material files
//
static void
createStringTable(char *dir, XmString **table, int *size)
{
    XmString *tbl;
    int numFiles = 0;

    // build the list of files
    struct dirent *direntry;
    DIR  *dirp;
    char *f;
    if (dirp = opendir(dir)) {
    	char currentDir[MAXPATHLEN];
	getcwd(currentDir, MAXPATHLEN-1);
        chdir(dir);
	
	// count the number of files so we can allocate space in the str table
        while (direntry = readdir(dirp)) {
	    f = direntry->d_name;
	    if (isMtlFile(f))
		numFiles++;
        }
        (void) closedir(dirp);
	
	// now build the string table
	if (numFiles != 0) {
	    // get space for the table
	    tbl = (XmString *) malloc(numFiles * sizeof(XmString));
	    *table = tbl;
	    *size = numFiles;
	
	    // fill the table in
	    dirp = opendir(dir);
	    chdir(dir);
	    while (direntry = readdir(dirp)) {
		f = direntry->d_name;
		if (isMtlFile(f)) {
		    *tbl = SoXt::encodeString(f);
		    tbl++;
		}
	    }
	    (void) closedir(dirp);
	}
	else {
	    // get space for one entry - bogusFile
	    tbl = (XmString *) malloc(sizeof(XmString));
	    *table = tbl;
	    *size = 1;
	    *tbl = SoXt::encodeString(bogusFile);
	}
	chdir(currentDir); // back to our working directory
    }
#ifdef DEBUG
    else {
	SoDebugError::post("SoXtMaterialList::createStringTable",
		"Cannot open directory %s.", dir);
    }
#endif
}

static void
destroyStringTable(XmString *table, int size)
{
    int i;

    // nuke the table entries
    for (i = 0; i < size; i++)
	XmStringFree(table[i]);

    free(table);
}

////////////////////////////////////////////////////////////////////////
//
// Public constructor - build the widget right now
//
SoXtMaterialList::SoXtMaterialList(
    Widget parent,
    const char *name, 
    SbBool buildInsideParent, 
    const char *dir)
	: SoXtComponent(
	    parent,
	    name, 
	    buildInsideParent)
//
////////////////////////////////////////////////////////////////////////
{
    // In this case, this component is what the app wants, so buildNow = TRUE
    constructorCommon(dir, TRUE);
}

////////////////////////////////////////////////////////////////////////
//
// SoEXTENDER constructor - the subclass tells us whether to build or not
//
SoXtMaterialList::SoXtMaterialList(
    Widget parent,
    const char *name, 
    SbBool buildInsideParent, 
    const char *dir, 
    SbBool buildNow)
	: SoXtComponent(
	    parent,
	    name, 
	    buildInsideParent)
//
////////////////////////////////////////////////////////////////////////
{
    // In this case, this component may be what the app wants, 
    // or it may want a subclass of this component. Pass along buildNow
    // as it was passed to us.
    constructorCommon(dir, buildNow);
}

////////////////////////////////////////////////////////////////////////
//
// Called by the constructors
//
// private
//
void
SoXtMaterialList::constructorCommon(const char *dir, SbBool buildNow)
//
//////////////////////////////////////////////////////////////////////
{
    setClassName("SoXtMaterialList");
    if (dir != NULL)
	materialDir = strdup(dir);
    else materialDir = strdup(IVMATERIALSDIR);

    callbackList = new SoCallbackList;
    curPalette = -1;
    
    // Build the widget tree, and let SoXtComponent know about our base widget.
    if (buildNow) {
	Widget w = buildWidget(getParentWidget());
	if (w != NULL)
	    setBaseWidget(w);
    }
}


////////////////////////////////////////////////////////////////////////
//
//    Destructor.
//
SoXtMaterialList::~SoXtMaterialList()
//
////////////////////////////////////////////////////////////////////////
{
    delete callbackList;
    if (materialDir != NULL) free(materialDir);
    for (int i = 0; i < mtlPalettes.getLength(); i++)
    	free((char *) mtlPalettes[i]);
}

////////////////////////////////////////////////////////////////////////
//
// Get the dir name from the env variable, and set up the palettes.
// This returns TRUE if it did so without error, and sets the member
// variable curPalette to 0. Else this returns FALSE and sets
// curPalette to -1.
//
// private
//
SbBool
SoXtMaterialList::setupPalettes()
//
////////////////////////////////////////////////////////////////////////
{
    // see if SO_MATERIAL_DIR has changed.
    char *envDir = getenv("SO_MATERIAL_DIR");
    if (envDir != NULL) {
	if ((strcmp(envDir, materialDir) == 0) && (curPalette != -1))
	    return TRUE; // env dir is same as current dir, palette is already OK
	    
	if (materialDir != NULL) free(materialDir);
        materialDir = strdup(envDir);
    }
    else if (curPalette != -1)
	return TRUE; // env dir not set, but palette is already OK
    
    // read the palette!
    curPalette = 0;

    // build the list of directories
    struct dirent *direntry;
    DIR  *dirp;
    char *f;
    if (dirp = opendir(materialDir)) {
    	char currentDir[MAXPATHLEN];
	getcwd(currentDir, MAXPATHLEN-1);
        chdir(materialDir);
        while (direntry = readdir(dirp)) {
	    f = direntry->d_name;
	    /* hide '.' files */
	    if (f[0] != '.') {
		if (isDirectory(f)) {
		    mtlPalettes.append(strdup(f));
		}
	    }
        }
        (void) closedir(dirp);
	chdir(currentDir); // back to our working directory
    }
    else {
#ifdef DEBUG
	SoDebugError::post("SoXtMaterialList::setupPalettes",
		"Cannot open directory %s.  Try setting the environment variable SO_MATERIAL_DIR to a directory which has material files in it.", materialDir);
#endif
	curPalette = -1;
    }
    
    return (curPalette != -1); // if not -1, return TRUE
}

////////////////////////////////////////////////////////////////////////
//
//    This builds the pulldown menu, using materialDir as the parent
// directory.
//
// usage: private
//
Widget
SoXtMaterialList::buildPulldownMenu(Widget parent)
//
////////////////////////////////////////////////////////////////////////
{
    Widget menubar, pulldown;
    Widget submenu;
    Arg    args[5];
    int    n;
    
    n = 0;
    XtSetArg(args[n], XmNuserData, this); n++;

    menubar = XmCreateMenuBar(parent, "menuBar", NULL, 0);

    pulldown = XmCreatePulldownMenu(menubar, "controlPulldown", args, n);

    n = 0;
    XtSetArg(args[n], XmNsubMenuId, pulldown); n++;
    submenu = XtCreateManagedWidget("Palettes",
				xmCascadeButtonGadgetClass,
				menubar, args, n);

#define MENU_ITEM(BUTTON,NAME,KONST) \
    n = 0; \
    XtSetArg(args[n], XmNuserData, this); n++; \
    XtSetArg(args[n], XmNindicatorType, XmONE_OF_MANY); n++; \
    BUTTON = XtCreateManagedWidget(NAME, \
    	    	xmToggleButtonGadgetClass, \
    	    	pulldown,args,n); \
    XtAddCallback(BUTTON, XmNvalueChangedCallback, \
	(XtCallbackProc) SoXtMaterialList::menuPick, \
	(XtPointer) KONST);


    // create the menu items ???pass in the dir names!
    Widget button;
    menuItems.truncate(0);
    for (int i = 0; i < mtlPalettes.getLength(); i++) {
    	char *dir = (char *) mtlPalettes[i];
	MENU_ITEM(button, dir, (unsigned long) i)
	menuItems.append(button); // store these buttons for future reference
    }
#undef MENU_ITEM
    
    if (menuItems.getLength() == 0) {
#ifdef DEBUG
	SoDebugError::post("SoXtMaterialList::buildPulldownMenu",
		"Directory %s has no material palettes.", materialDir);
#endif
    	curPalette = -1;
    }
    
    XtManageChild(submenu);
    
    // set the current palette toggle to on
    if (curPalette != -1)
	TOGGLE_ON(menuItems[curPalette]);

    return menubar;
}


////////////////////////////////////////////////////////////////////////
//
//  Fill in the Motif list with file names from the current palette.
//
// usage: virtual private
//
void
SoXtMaterialList::fillInMaterialList()
//
////////////////////////////////////////////////////////////////////////
{
    if (curPalette == -1)
    	return;
	
    XmString *table;
    int	   count;
    Arg    args[2];
    int    n;
    char curdir[256];
    
    // create a string table for the current palette directory
    sprintf(curdir, "%s/%s", materialDir, (char *)mtlPalettes[curPalette]);
    createStringTable(curdir, &table, &count);
    
    n = 0;
    XtSetArg(args[n], XmNitems, table); n++;
    XtSetArg(args[n], XmNitemCount, count); n++;
    XtSetValues(mtlList, args, n);

    /* free our local table - XmCreateScrolledList made a copy */
    destroyStringTable(table, count);
}

////////////////////////////////////////////////////////////////////////
//
//    This routine builds all the widgets, sets up callback routines,
//  and does the layout using motif.
//
// usage: protected
//
Widget
SoXtMaterialList::buildWidget(Widget parent)
//
////////////////////////////////////////////////////////////////////////
{
    // setup palette if needed. return NULL on error.
    if (! setupPalettes())
	return NULL;

    Widget  	menubar;
    int		n;
    Arg		wargs[10];

    // create the top level widget
    Widget widget = XtCreateWidget(getWidgetName(),xmFormWidgetClass,parent,NULL,0);

    // build the subcomponents
    menubar = buildPulldownMenu(widget);
    if (curPalette == -1) {
    	XtDestroyWidget(menubar);
    	XtDestroyWidget(widget);
	widget = NULL;
    	return NULL;
    }

    XmString *table;
    int	   count;
    char curdir[256];
    
    // create a string table for the current palette directory
    sprintf(curdir, "%s/%s", materialDir, (char *)mtlPalettes[curPalette]);
    createStringTable(curdir, &table, &count);

    // Layout
    n = 0;
    XtSetArg(wargs[n], XmNtopAttachment,    XmATTACH_FORM); n++;
    XtSetArg(wargs[n], XmNleftAttachment,   XmATTACH_FORM); n++;
    XtSetArg(wargs[n], XmNrightAttachment,  XmATTACH_FORM); n++;
    XtSetValues(menubar, wargs, n);

    //??? BUG IN LIST WIDGET - I cannot build the widget,  and then
    // call XtSetValues to set up the layout. I must do it all at once!
    // This seems to me like a bug in motif!
    n = 0;
XtSetArg(wargs[n], XmNitems, table); n++;
XtSetArg(wargs[n], XmNitemCount, count); n++;
XtSetArg(wargs[n], XmNvisibleItemCount, 8); n++;
XtSetArg(wargs[n], XmNselectionPolicy, XmSINGLE_SELECT); n++;
    XtSetArg(wargs[n], XmNbottomAttachment, XmATTACH_FORM); n++;
    XtSetArg(wargs[n], XmNleftAttachment,   XmATTACH_FORM); n++;
    XtSetArg(wargs[n], XmNrightAttachment,  XmATTACH_FORM); n++;
    XtSetArg(wargs[n], XmNtopAttachment,    XmATTACH_WIDGET); n++;
    XtSetArg(wargs[n], XmNtopWidget,        menubar); n++;
    //???XtSetValues(mtlList, wargs, n);
    
mtlList = XmCreateScrolledList(widget, "materialList", wargs, n);
XtAddCallback(mtlList,
    XmNsingleSelectionCallback,
    (XtCallbackProc) SoXtMaterialList::listPick,
    (XtPointer) this);
    
/* free our local table - XmCreateScrolledList made a copy */
destroyStringTable(table, count);



    /* manage those children! */
    XtManageChild(mtlList);
    XtManageChild(menubar);

    return widget;
}

////////////////////////////////////////////////////////////////////////
//
//  Called by Xt when a menu item is picked.
//
//  Use: static private
//
void
SoXtMaterialList::menuPick(Widget w, int id, XtPointer)
//
////////////////////////////////////////////////////////////////////////
{
    SoXtMaterialList *ml;
    Arg	args[1];
    
    XtSetArg(args[0], XmNuserData, &ml);
    XtGetValues(w, args, 1);

#ifdef DEBUG
    if (ml == NULL) {
	SoDebugError::post("SoXtMaterialList::menuPick",
		"ml is NULL");
	return;
    }
#endif

    if (id != ml->curPalette) {
	// toggle the previous current palette item to OFF
    	TOGGLE_OFF(ml->menuItems[ml->curPalette]);
	ml->curPalette = id;
	
	// and fill in the mtlList with the new current palette
	ml->fillInMaterialList();
    }
    
    // make sure the current palette item is set to ON
    TOGGLE_ON(ml->menuItems[ml->curPalette]);
}

////////////////////////////////////////////////////////////////////////
//
//  Called by Xt when a list item is picked.
//
//  Use: static private
//
void
SoXtMaterialList::listPick(Widget, SoXtMaterialList *ml, XtPointer p)
//
////////////////////////////////////////////////////////////////////////
{
    XmListCallbackStruct *listdata = (XmListCallbackStruct *) p;
    char *name;
    char filename[256];
    
    name = SoXt::decodeString(listdata->item);
    if (strcmp(name, bogusFile) == 0)
    	return;
    
    // construct the file name from all our information
    sprintf(filename, "%s/%s/%s",
    	ml->materialDir,
	(char *) ml->mtlPalettes[ml->curPalette],
	name);

    // read the file, search for SoMaterial, and pass data to callbacks
    SoInput in;
    SoNode  *root;
    if (in.openFile(filename)) {
	if (SoDB::read(&in, root)) {
	    root->ref();
	    
	    // find the material node
	    SoSearchAction sa;
	    SoFullPath *fullPath;
	
	    // Look for existing camera
	    sa.setType(SoMaterial::getClassTypeId());
	    sa.apply(root);
	
	    fullPath = (SoFullPath *) sa.getPath();
	    if (fullPath != NULL) {
	    	// invoke the callbacks with this material!
		fullPath->ref();
	    	SoMaterial *mtl = (SoMaterial *) fullPath->getTail();
		ml->callbackList->invokeCallbacks(mtl);
		fullPath->unref();
	    }
#ifdef DEBUG
	    else {
		SoDebugError::post("SoXtMaterialList::listPick",
		    "%s has no Material node.", filename);
	    }
#endif
	    
	    root->unref();
	}
#ifdef DEBUG
	else {
	    SoDebugError::post("SoXtMaterialList::listPick",
		    "Cannot read file %s.", filename);
	}
#endif
    }
#ifdef DEBUG
    else {
	SoDebugError::post("SoXtMaterialList::listPick",
		"Cannot open file %s.", filename);
    }
#endif
    
    free(name);
}

//
// redefine those generic virtual functions
//
const char *
SoXtMaterialList::getDefaultWidgetName() const
{ return "SoXtMaterialList"; }

const char *
SoXtMaterialList::getDefaultTitle() const
{ return "Material List"; }

const char *
SoXtMaterialList::getDefaultIconTitle() const
{ return "Mat List"; }