Tekproc.c revision 20d2c4d2 
1/* $XTermId: Tekproc.c,v 1.182 2010/06/20 21:34:37 tom Exp $ */
2
3/*
4 *
5 * Copyright 2001-2009,2010 by Thomas E. Dickey
6 *
7 *                         All Rights Reserved
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the
11 * "Software"), to deal in the Software without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
23 * IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
24 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 *
28 * Except as contained in this notice, the name(s) of the above copyright
29 * holders shall not be used in advertising or otherwise to promote the
30 * sale, use or other dealings in this Software without prior written
31 * authorization.
32 *
33 * Copyright 1988  The Open Group
34 *
35 * Permission to use, copy, modify, distribute, and sell this software and its
36 * documentation for any purpose is hereby granted without fee, provided that
37 * the above copyright notice appear in all copies and that both that
38 * copyright notice and this permission notice appear in supporting
39 * documentation.
40 *
41 * The above copyright notice and this permission notice shall be included in
42 * all copies or substantial portions of the Software.
43 *
44 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
45 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
46 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
47 * OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
48 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
49 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
50 *
51 * Except as contained in this notice, the name of The Open Group shall not be
52 * used in advertising or otherwise to promote the sale, use or other dealings
53 * in this Software without prior written authorization from The Open Group.
54 *
55 * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
56 *
57 *                         All Rights Reserved
58 *
59 * Permission to use, copy, modify, and distribute this software and its
60 * documentation for any purpose and without fee is hereby granted,
61 * provided that the above copyright notice appear in all copies and that
62 * both that copyright notice and this permission notice appear in
63 * supporting documentation, and that the name of Digital Equipment
64 * Corporation not be used in advertising or publicity pertaining to
65 * distribution of the software without specific, written prior permission.
66 *
67 *
68 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
69 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
70 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
71 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
72 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
73 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
74 * SOFTWARE.
75 */
76
77/* Tekproc.c */
78
79#define RES_OFFSET(field)	XtOffsetOf(TekWidgetRec, field)
80
81#include <xterm.h>
82
83#include <X11/Xatom.h>
84#include <X11/Xutil.h>
85#include <X11/cursorfont.h>
86#include <X11/Xmu/CharSet.h>
87
88#if OPT_TOOLBAR
89
90#if defined(HAVE_LIB_XAW)
91#include <X11/Xaw/Form.h>
92#elif defined(HAVE_LIB_XAW3D)
93#include <X11/Xaw3d/Form.h>
94#elif defined(HAVE_LIB_NEXTAW)
95#include <X11/neXtaw/Form.h>
96#elif defined(HAVE_LIB_XAWPLUS)
97#include <X11/XawPlus/Form.h>
98#endif
99
100#endif /* OPT_TOOLBAR */
101
102#include <assert.h>
103#include <stdio.h>
104#include <ctype.h>
105#include <signal.h>
106
107#include <Tekparse.h>
108#include <data.h>
109#include <error.h>
110#include <menu.h>
111
112#define DefaultGCID XGContextFromGC(DefaultGC(XtDisplay(tw), DefaultScreen(XtDisplay(tw))))
113
114/* Tek defines */
115
116#define	DOTDASHEDLINE	2
117#define	DOTTEDLINE	1
118#define	EAST		01
119#define	LINEMASK	07
120#define	LONGDASHEDLINE	4
121#define	MARGIN1		0
122#define	MARGIN2		1
123#define MAX_PTS		150
124#define MAX_VTX		300
125#define	NORTH		04
126#define	PENDOWN		1
127#define	PENUP		0
128#define	SHORTDASHEDLINE	3
129#define	SOLIDLINE	0
130#define	SOUTH		010
131#define	TEKBOTTOMPAD	23
132#define	TEKDEFHEIGHT	565
133#define	TEKDEFWIDTH	750
134#define	TEKHEIGHT	3072
135#define	TEKHOME		( (TekChar[tekscr->page.fontsize].nlines - 1) \
136			 * TekChar[tekscr->page.fontsize].vsize)
137#define	TEKMINHEIGHT	452
138#define	TEKMINWIDTH	600
139#define	TEKTOPPAD	34
140#define	TEKWIDTH	4096
141#define	WEST		02
142
143#define	TekMove(tw,x,y)	tekscr->cur_X = x; tekscr->cur_Y = y
144#define	input()		Tinput(tw)
145#define	unput(c)	*Tpushback++ = (Char) c
146/* *INDENT-OFF* */
147static struct Tek_Char {
148    int hsize;			/* in Tek units */
149    int vsize;			/* in Tek units */
150    int charsperline;
151    int nlines;
152} TekChar[TEKNUMFONTS] = {
153    {56, 88, 74, 35},		/* large */
154    {51, 82, 81, 38},		/* #2 */
155    {34, 53, 121, 58},		/* #3 */
156    {31, 48, 133, 64},		/* small */
157};
158/* *INDENT-ON* */
159
160static Cursor GINcursor;
161static XSegment *line_pt;
162static int nplot;
163static TekLink Tek0;
164static jmp_buf Tekjump;
165static TekLink *TekRecord;
166static XSegment *Tline;
167
168static Const int *curstate = Talptable;
169static Const int *Tparsestate = Talptable;
170
171static char defaultTranslations[] = "\
172                ~Meta<KeyPress>: insert-seven-bit() \n\
173                 Meta<KeyPress>: insert-eight-bit() \n\
174               !Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
175          !Lock Ctrl <Btn1Down>: popup-menu(mainMenu) \n\
176!Lock Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
177     !Ctrl @Num_Lock <Btn1Down>: popup-menu(mainMenu) \n\
178               !Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
179          !Lock Ctrl <Btn2Down>: popup-menu(tekMenu) \n\
180!Lock Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
181     !Ctrl @Num_Lock <Btn2Down>: popup-menu(tekMenu) \n\
182          Shift ~Meta<Btn1Down>: gin-press(L) \n\
183                ~Meta<Btn1Down>: gin-press(l) \n\
184          Shift ~Meta<Btn2Down>: gin-press(M) \n\
185                ~Meta<Btn2Down>: gin-press(m) \n\
186          Shift ~Meta<Btn3Down>: gin-press(R) \n\
187                ~Meta<Btn3Down>: gin-press(r)";
188/* *INDENT-OFF* */
189static XtActionsRec actionsList[] = {
190    { "string",	HandleStringEvent },
191    { "insert",	HandleKeyPressed },	/* alias for insert-seven-bit */
192    { "insert-seven-bit",	HandleKeyPressed },
193    { "insert-eight-bit",	HandleEightBitKeyPressed },
194    { "gin-press",		HandleGINInput },
195    { "secure",			HandleSecure },
196    { "create-menu",		HandleCreateMenu },
197    { "popup-menu",		HandlePopupMenu },
198    /* menu actions */
199    { "allow-send-events",	HandleAllowSends },
200    { "set-visual-bell",	HandleSetVisualBell },
201#ifdef ALLOWLOGGING
202    { "set-logging",		HandleLogging },
203#endif
204    { "redraw",			HandleRedraw },
205    { "send-signal",		HandleSendSignal },
206    { "quit",			HandleQuit },
207    { "set-scrollbar",		HandleScrollbar },
208    { "set-jumpscroll",		HandleJumpscroll },
209    { "set-reverse-video",	HandleReverseVideo },
210    { "set-autowrap",		HandleAutoWrap },
211    { "set-reversewrap",	HandleReverseWrap },
212    { "set-autolinefeed",	HandleAutoLineFeed },
213    { "set-appcursor",		HandleAppCursor },
214    { "set-appkeypad",		HandleAppKeypad },
215    { "set-scroll-on-key",	HandleScrollKey },
216    { "set-scroll-on-tty-output", HandleScrollTtyOutput },
217    { "set-allow132",		HandleAllow132 },
218    { "set-cursesemul",		HandleCursesEmul },
219    { "set-marginbell",		HandleMarginBell },
220    { "set-altscreen",		HandleAltScreen },
221    { "soft-reset",		HandleSoftReset },
222    { "hard-reset",		HandleHardReset },
223    { "set-terminal-type",	HandleSetTerminalType },
224    { "set-visibility",		HandleVisibility },
225    { "set-tek-text",		HandleSetTekText },
226    { "tek-page",		HandleTekPage },
227    { "tek-reset",		HandleTekReset },
228    { "tek-copy",		HandleTekCopy },
229#if OPT_TOOLBAR
230    { "set-toolbar",		HandleToolbar },
231#endif
232};
233/* *INDENT-ON* */
234
235static Dimension defOne = 1;
236
237#define GIN_TERM_NONE_STR	"none"
238#define GIN_TERM_CR_STR		"CRonly"
239#define GIN_TERM_EOT_STR	"CR&EOT"
240
241#define GIN_TERM_NONE	0
242#define GIN_TERM_CR	1
243#define GIN_TERM_EOT	2
244
245#ifdef VMS
246#define DFT_FONT_SMALL "FIXED"
247#else
248#define DFT_FONT_SMALL "6x10"
249#endif
250
251static XtResource resources[] =
252{
253    {XtNwidth, XtCWidth, XtRDimension, sizeof(Dimension),
254     XtOffsetOf(CoreRec, core.width), XtRDimension, (caddr_t) & defOne},
255    {XtNheight, XtCHeight, XtRDimension, sizeof(Dimension),
256     XtOffsetOf(CoreRec, core.height), XtRDimension, (caddr_t) & defOne},
257    Fres("fontLarge", XtCFont, tek.Tfont[TEK_FONT_LARGE], "9x15"),
258    Fres("font2", XtCFont, tek.Tfont[TEK_FONT_2], "6x13"),
259    Fres("font3", XtCFont, tek.Tfont[TEK_FONT_3], "8x13"),
260    Fres("fontSmall", XtCFont, tek.Tfont[TEK_FONT_SMALL], DFT_FONT_SMALL),
261    Sres(XtNinitialFont, XtCInitialFont, tek.initial_font, "large"),
262    Sres("ginTerminator", "GinTerminator", tek.gin_terminator_str, GIN_TERM_NONE_STR),
263#if OPT_TOOLBAR
264    Wres(XtNmenuBar, XtCMenuBar, tek.tb_info.menu_bar, 0),
265    Ires(XtNmenuHeight, XtCMenuHeight, tek.tb_info.menu_height, 25),
266#endif
267};
268
269static IChar Tinput(TekWidget /* tw */ );
270static int getpoint(TekWidget /* tw */ );
271static void TCursorBack(TekWidget /* tw */ );
272static void TCursorDown(TekWidget /* tw */ );
273static void TCursorForward(TekWidget /* tw */ );
274static void TCursorUp(TekWidget /* tw */ );
275static void TekBackground(TekWidget /* tw */ ,
276			  TScreen * /* screen */ );
277static void TekConfigure(Widget /* w */ );
278static void TekDraw(TekWidget /* tw */ ,
279		    int /* x */ ,
280		    int /* y */ );
281static void TekEnq(TekWidget /* tw */ ,
282		   unsigned /* status */ ,
283		   int /* x */ ,
284		   int /* y */ );
285static void TekFlush(TekWidget /* tw */ );
286static void TekInitialize(Widget /* request */ ,
287			  Widget /* wnew */ ,
288			  ArgList /* args */ ,
289			  Cardinal * /* num_args */ );
290static void TekPage(TekWidget /* tw */ );
291static void TekRealize(Widget /* gw */ ,
292		       XtValueMask * /* valuemaskp */ ,
293		       XSetWindowAttributes * /* values */ );
294
295static WidgetClassRec tekClassRec =
296{
297    {
298/* core_class fields */
299	(WidgetClass) & widgetClassRec,		/* superclass     */
300	"Tek4014",		/* class_name                   */
301	sizeof(TekWidgetRec),	/* widget_size                  */
302	NULL,			/* class_initialize             */
303	NULL,			/* class_part_initialize        */
304	False,			/* class_inited                 */
305	TekInitialize,		/* initialize                   */
306	NULL,			/* initialize_hook              */
307	TekRealize,		/* realize                      */
308	actionsList,		/* actions                      */
309	XtNumber(actionsList),	/* num_actions                  */
310	resources,		/* resources                    */
311	XtNumber(resources),	/* num_resources                */
312	NULLQUARK,		/* xrm_class                    */
313	True,			/* compress_motion              */
314	True,			/* compress_exposure            */
315	True,			/* compress_enterleave          */
316	False,			/* visible_interest             */
317	NULL,			/* destroy                      */
318	TekConfigure,		/* resize                       */
319	TekExpose,		/* expose                       */
320	NULL,			/* set_values                   */
321	NULL,			/* set_values_hook              */
322	XtInheritSetValuesAlmost,	/* set_values_almost    */
323	NULL,			/* get_values_hook              */
324	NULL,			/* accept_focus                 */
325	XtVersion,		/* version                      */
326	NULL,			/* callback_offsets             */
327	defaultTranslations,	/* tm_table                     */
328	XtInheritQueryGeometry,	/* query_geometry               */
329	XtInheritDisplayAccelerator,	/* display_accelerator  */
330	NULL			/* extension                    */
331    }
332};
333WidgetClass tekWidgetClass = (WidgetClass) & tekClassRec;
334
335static Bool Tfailed = False;
336
337int
338TekInit(void)
339{
340    Widget form_top, menu_top;
341    Dimension menu_high;
342
343    if (!Tfailed
344	&& tekWidget == 0) {
345	Cardinal nargs = 0;
346	Arg myArgs[3];
347	Boolean iconic = 0;
348
349	TRACE(("TekInit\n"));
350	XtSetArg(myArgs[nargs], XtNiconic, &iconic);
351	++nargs;
352	XtGetValues(toplevel, myArgs, nargs);
353
354	nargs = 0;
355	XtSetArg(myArgs[nargs], XtNiconic, iconic);
356	++nargs;
357	XtSetArg(myArgs[nargs], XtNallowShellResize, True);
358	++nargs;
359	XtSetArg(myArgs[nargs], XtNinput, True);
360	++nargs;
361
362	/* this causes the Initialize method to be called */
363	tekshellwidget =
364	    XtCreatePopupShell("tektronix", topLevelShellWidgetClass,
365			       toplevel, myArgs, nargs);
366
367	SetupMenus(tekshellwidget, &form_top, &menu_top, &menu_high);
368
369	/* this causes the Realize method to be called */
370	tekWidget = (TekWidget)
371	    XtVaCreateManagedWidget("tek4014",
372				    tekWidgetClass, form_top,
373#if OPT_TOOLBAR
374				    XtNmenuBar, menu_top,
375				    XtNresizable, True,
376				    XtNfromVert, menu_top,
377				    XtNtop, XawChainTop,
378				    XtNleft, XawChainLeft,
379				    XtNright, XawChainRight,
380				    XtNbottom, XawChainBottom,
381				    XtNmenuHeight, menu_high,
382#endif
383				    (XtPointer) 0);
384#if OPT_TOOLBAR
385	ShowToolbar(resource.toolBar);
386#endif
387    }
388    return (!Tfailed);
389}
390
391/*
392 * If we haven't allocated the PtyData struct, do so.
393 */
394int
395TekPtyData(void)
396{
397    if (Tpushb == 0) {
398	if ((Tpushb = TypeMallocN(Char, 10)) == NULL
399	    || (Tline = TypeMallocN(XSegment, MAX_VTX)) == NULL) {
400	    fprintf(stderr, "%s: Not enough core for Tek mode\n", xterm_name);
401	    if (Tpushb)
402		free(Tpushb);
403	    Tfailed = True;
404	    return 0;
405	}
406    }
407    return 1;
408}
409
410static void
411Tekparse(TekWidget tw)
412{
413    XtermWidget xw = term;
414    TScreen *screen = TScreenOf(xw);
415    TekScreen *tekscr = TekScreenOf(tw);
416    int x, y;
417    IChar c = 0;
418    IChar ch;
419    int nextstate;
420
421    for (;;) {
422	c = input();
423	/*
424	 * The parsing tables all have 256 entries.  If we're supporting
425	 * wide characters, we handle them by treating them the same as
426	 * printing characters.
427	 */
428#if OPT_WIDE_CHARS
429	if (c > 255) {
430	    nextstate = (Tparsestate == Talptable)
431		? CASE_PRINT
432		: CASE_IGNORE;
433	} else
434#endif
435	    nextstate = Tparsestate[c];
436	TRACE(("Tekparse %04X -> %d\n", c, nextstate));
437
438	switch (nextstate) {
439	case CASE_REPORT:
440	    TRACE(("case: report address\n"));
441	    if (tekscr->TekGIN) {
442		TekGINoff(tw);
443		TekEnqMouse(tw, 0);
444	    } else {
445		c = 064;	/* has hard copy unit */
446		if (tekscr->margin == MARGIN2)
447		    c |= 02;
448		TekEnq(tw, c, tekscr->cur_X, tekscr->cur_Y);
449	    }
450	    TekRecord->ptr[-1] = ANSI_NAK;	/* remove from recording */
451	    Tparsestate = curstate;
452	    break;
453
454	case CASE_VT_MODE:
455	    TRACE(("case: special return to vt102 mode\n"));
456	    Tparsestate = curstate;
457	    TekRecord->ptr[-1] = ANSI_NAK;	/* remove from recording */
458	    FlushLog(xw);
459	    return;
460
461	case CASE_SPT_STATE:
462	    TRACE(("case: Enter Special Point Plot mode\n"));
463	    if (tekscr->TekGIN)
464		TekGINoff(tw);
465	    Tparsestate = curstate = Tspttable;
466	    break;
467
468	case CASE_GIN:
469	    TRACE(("case: Do Tek GIN mode\n"));
470	    tekscr->TekGIN = &TekRecord->ptr[-1];
471	    /* Set cross-hair cursor raster array */
472	    if ((GINcursor =
473		 make_colored_cursor(XC_tcross,
474				     T_COLOR(screen, MOUSE_FG),
475				     T_COLOR(screen, MOUSE_BG))) != 0) {
476		XDefineCursor(XtDisplay(tw), TWindow(tekscr),
477			      GINcursor);
478	    }
479	    Tparsestate = Tbyptable;	/* Bypass mode */
480	    break;
481
482	case CASE_BEL:
483	    TRACE(("case: BEL\n"));
484	    if (tekscr->TekGIN)
485		TekGINoff(tw);
486	    if (!tekRefreshList)
487		Bell(xw, XkbBI_TerminalBell, 0);
488	    Tparsestate = curstate;	/* clear bypass condition */
489	    break;
490
491	case CASE_BS:
492	    TRACE(("case: BS\n"));
493	    if (tekscr->TekGIN)
494		TekGINoff(tw);
495	    Tparsestate = curstate;	/* clear bypass condition */
496	    TCursorBack(tw);
497	    break;
498
499	case CASE_PT_STATE:
500	    TRACE(("case: Enter Tek Point Plot mode\n"));
501	    if (tekscr->TekGIN)
502		TekGINoff(tw);
503	    Tparsestate = curstate = Tpttable;
504	    break;
505
506	case CASE_PLT_STATE:
507	    TRACE(("case: Enter Tek Plot mode\n"));
508	    if (tekscr->TekGIN)
509		TekGINoff(tw);
510	    Tparsestate = curstate = Tplttable;
511	    if ((c = input()) == ANSI_BEL)
512		tekscr->pen = PENDOWN;
513	    else {
514		unput(c);
515		tekscr->pen = PENUP;
516	    }
517	    break;
518
519	case CASE_TAB:
520	    TRACE(("case: HT\n"));
521	    if (tekscr->TekGIN)
522		TekGINoff(tw);
523	    Tparsestate = curstate;	/* clear bypass condition */
524	    TCursorForward(tw);
525	    break;
526
527	case CASE_IPL_STATE:
528	    TRACE(("case: Enter Tek Incremental Plot mode\n"));
529	    if (tekscr->TekGIN)
530		TekGINoff(tw);
531	    Tparsestate = curstate = Tipltable;
532	    break;
533
534	case CASE_ALP_STATE:
535	    TRACE(("case: Enter Tek Alpha mode from any other mode\n"));
536	    if (tekscr->TekGIN)
537		TekGINoff(tw);
538	    /* if in one of graphics states, move alpha cursor */
539	    if (nplot > 0)	/* flush line VTbuffer */
540		TekFlush(tw);
541	    Tparsestate = curstate = Talptable;
542	    break;
543
544	case CASE_UP:
545	    TRACE(("case: cursor up\n"));
546	    if (tekscr->TekGIN)
547		TekGINoff(tw);
548	    Tparsestate = curstate;	/* clear bypass condition */
549	    TCursorUp(tw);
550	    break;
551
552	case CASE_COPY:
553	    TRACE(("case: make copy\n"));
554	    if (tekscr->TekGIN)
555		TekGINoff(tw);
556	    TekCopy(tw);
557	    TekRecord->ptr[-1] = ANSI_NAK;	/* remove from recording */
558	    Tparsestate = curstate;	/* clear bypass condition */
559	    break;
560
561	case CASE_PAGE:
562	    TRACE(("case: Page Function\n"));
563	    if (tekscr->TekGIN)
564		TekGINoff(tw);
565	    TekPage(tw);	/* clear bypass condition */
566	    break;
567
568	case CASE_BES_STATE:
569	    TRACE(("case: Byp: an escape char\n"));
570	    Tparsestate = Tbestable;
571	    break;
572
573	case CASE_BYP_STATE:
574	    TRACE(("case: set bypass condition\n"));
575	    Tparsestate = Tbyptable;
576	    break;
577
578	case CASE_IGNORE:
579	    TRACE(("case: Esc: totally ignore CR, ESC, LF, ~\n"));
580	    break;
581
582	case CASE_ASCII:
583	    TRACE(("case: Select ASCII char set\n"));
584	    /* ignore for now */
585	    Tparsestate = curstate;
586	    break;
587
588	case CASE_APL:
589	    TRACE(("case: Select APL char set\n"));
590	    /* ignore for now */
591	    Tparsestate = curstate;
592	    break;
593
594	case CASE_CHAR_SIZE:
595	    TRACE(("case: character size selector\n"));
596	    TekSetFontSize(tw, False, (int) (c & 03));
597	    Tparsestate = curstate;
598	    break;
599
600	case CASE_BEAM_VEC:
601	    TRACE(("case: beam and vector selector\n"));
602	    /* only line types */
603	    if ((c &= LINEMASK) != tekscr->cur.linetype) {
604		if (nplot > 0)
605		    TekFlush(tw);
606		if (c <= TEKNUMLINES)
607		    tekscr->cur.linetype = c;
608	    }
609	    Tparsestate = curstate;
610	    break;
611
612	case CASE_CURSTATE:
613	    Tparsestate = curstate;
614	    break;
615
616	case CASE_PENUP:
617	    TRACE(("case: Ipl: penup\n"));
618	    tekscr->pen = PENUP;
619	    break;
620
621	case CASE_PENDOWN:
622	    TRACE(("case: Ipl: pendown\n"));
623	    tekscr->pen = PENDOWN;
624	    break;
625
626	case CASE_IPL_POINT:
627	    TRACE(("case: Ipl: point\n"));
628	    x = tekscr->cur_X;
629	    y = tekscr->cur_Y;
630	    if (c & NORTH)
631		y++;
632	    else if (c & SOUTH)
633		y--;
634	    if (c & EAST)
635		x++;
636	    else if (c & WEST)
637		x--;
638	    if (tekscr->pen == PENDOWN)
639		TekDraw(tw, x, y);
640	    else
641		TekMove(tw, x, y);
642	    break;
643
644	case CASE_PLT_VEC:
645	    TRACE(("case: Plt: vector\n"));
646	    unput(c);
647	    if (getpoint(tw)) {
648		if (tekscr->pen == PENDOWN) {
649		    TekDraw(tw, tekscr->cur.x, tekscr->cur.y);
650		} else {
651		    TekMove(tw, tekscr->cur.x, tekscr->cur.y);
652		}
653		tekscr->pen = PENDOWN;
654	    }
655	    break;
656
657	case CASE_PT_POINT:
658	    TRACE(("case: Pt: point\n"));
659	    unput(c);
660	    if (getpoint(tw)) {
661		TekMove(tw, tekscr->cur.x, tekscr->cur.y);
662		TekDraw(tw, tekscr->cur.x, tekscr->cur.y);
663	    }
664	    break;
665
666	case CASE_SPT_POINT:
667	    TRACE(("case: Spt: point\n"));
668	    /* ignore intensity character in c */
669	    if (getpoint(tw)) {
670		TekMove(tw, tekscr->cur.x, tekscr->cur.y);
671		TekDraw(tw, tekscr->cur.x, tekscr->cur.y);
672	    }
673	    break;
674
675	case CASE_CR:
676	    TRACE(("case: CR\n"));
677	    if (tekscr->TekGIN)
678		TekGINoff(tw);
679	    if (nplot > 0)	/* flush line VTbuffer */
680		TekFlush(tw);
681	    tekscr->cur_X = tekscr->margin == MARGIN1 ? 0 :
682		TEKWIDTH / 2;
683	    Tparsestate = curstate = Talptable;
684	    break;
685
686	case CASE_ESC_STATE:
687	    TRACE(("case: ESC\n"));
688	    Tparsestate = Tesctable;
689	    break;
690
691	case CASE_LF:
692	    TRACE(("case: LF\n"));
693	    if (tekscr->TekGIN)
694		TekGINoff(tw);
695	    TCursorDown(tw);
696	    if (!tekRefreshList)
697		do_xevents();
698	    break;
699
700	case CASE_SP:
701	    TRACE(("case: SP\n"));
702	    TCursorForward(tw);
703	    break;
704
705	case CASE_PRINT:
706	    TRACE(("case: printable character\n"));
707	    ch = c;
708	    x = (int) (tekscr->cur_X * TekScale(tekscr))
709		+ screen->border;
710	    y = (int) ((TEKHEIGHT + TEKTOPPAD - tekscr->cur_Y) * TekScale(tekscr))
711		+ screen->border;
712
713#if OPT_WIDE_CHARS
714	    if (screen->wide_chars
715		&& (ch > 255)) {
716		XChar2b sbuf;
717		sbuf.byte2 = LO_BYTE(ch);
718		sbuf.byte1 = HI_BYTE(ch);
719		XDrawImageString16(XtDisplay(tw),
720				   TWindow(tekscr),
721				   tekscr->TnormalGC,
722				   x,
723				   y,
724				   &sbuf,
725				   1);
726	    } else
727#endif
728	    {
729		char ch2 = (char) ch;
730		XDrawString(XtDisplay(tw),
731			    TWindow(tekscr),
732			    tekscr->TnormalGC,
733			    x,
734			    y,
735			    &ch2,
736			    1);
737	    }
738	    TCursorForward(tw);
739	    break;
740	case CASE_OSC:
741	    /* FIXME:  someone should disentangle the input queues
742	     * of this code so that it can be state-driven.
743	     */
744	    TRACE(("case: do osc escape\n"));
745	    {
746		/*
747		 * do_osc() can call TekExpose(), which calls TekRefresh(),
748		 * and sends us recurring here - don't do that...
749		 */
750		static int nested;
751
752		Char buf2[512];
753		IChar c2;
754		size_t len = 0;
755		while ((c2 = input()) != ANSI_BEL) {
756		    if (!isprint((int) (c2 & 0x7f))
757			|| len + 2 >= (int) sizeof(buf2))
758			break;
759		    buf2[len++] = (Char) c2;
760		}
761		buf2[len] = 0;
762		if (!nested++) {
763		    if (c2 == ANSI_BEL)
764			do_osc(xw, buf2, len, ANSI_BEL);
765		}
766		--nested;
767	    }
768	    Tparsestate = curstate;
769	    break;
770	}
771    }
772}
773
774static int rcnt;
775static char *rptr;
776static PtySelect Tselect_mask;
777
778static IChar
779Tinput(TekWidget tw)
780{
781    XtermWidget xw = term;
782    TekScreen *tekscr = TekScreenOf(tw);
783    TScreen *screen = TScreenOf(xw);
784    TekLink *tek;
785
786    if (Tpushback > Tpushb)
787	return (*--Tpushback);
788    if (tekRefreshList) {
789	if (rcnt-- > 0)
790	    return (IChar) (*rptr++);
791	if ((tek = tekRefreshList->next) != 0) {
792	    tekRefreshList = tek;
793	    rptr = tek->data;
794	    rcnt = tek->count - 1;
795	    TekSetFontSize(tw, False, tek->fontsize);
796	    return (IChar) (*rptr++);
797	}
798	tekRefreshList = (TekLink *) 0;
799	longjmp(Tekjump, 1);
800    }
801  again:
802    if (VTbuffer->next >= VTbuffer->last) {
803	int update = VTbuffer->update;
804
805	if (nplot > 0)		/* flush line */
806	    TekFlush(tw);
807#ifdef VMS
808	Tselect_mask = pty_mask;	/* force a read */
809#else /* VMS */
810	XFD_COPYSET(&pty_mask, &Tselect_mask);
811#endif /* VMS */
812	for (;;) {
813#ifdef CRAY
814	    struct timeval crocktimeout;
815	    crocktimeout.tv_sec = 0;
816	    crocktimeout.tv_usec = 0;
817	    (void) Select(max_plus1,
818			  &Tselect_mask, NULL, NULL,
819			  &crocktimeout);
820#endif
821	    if (readPtyData(xw, &Tselect_mask, VTbuffer)) {
822		break;
823	    }
824	    if (Ttoggled && curstate == Talptable) {
825		TCursorToggle(tw, TOGGLE);
826		Ttoggled = False;
827	    }
828	    if (XtAppPending(app_con) & XtIMXEvent) {
829#ifdef VMS
830		Tselect_mask = X_mask;
831#else /* VMS */
832		XFD_COPYSET(&X_mask, &Tselect_mask);
833#endif /* VMS */
834	    } else {
835		XFlush(XtDisplay(tw));
836#ifdef VMS
837		Tselect_mask = Select_mask;
838
839#else /* VMS */
840		XFD_COPYSET(&Select_mask, &Tselect_mask);
841		if (Select(max_plus1, &Tselect_mask, NULL, NULL, NULL) < 0) {
842		    if (errno != EINTR)
843			SysError(ERROR_TSELECT);
844		    continue;
845		}
846#endif /* VMS */
847	    }
848#ifdef VMS
849	    if (Tselect_mask & X_mask) {
850		xevents();
851		if (VTbuffer->update != update)
852		    goto again;
853	    }
854#else /* VMS */
855	    if (FD_ISSET(ConnectionNumber(XtDisplay(tw)), &Tselect_mask)) {
856		xevents();
857		if (VTbuffer->update != update)
858		    goto again;
859	    }
860#endif /* VMS */
861	}
862	if (!Ttoggled && curstate == Talptable) {
863	    TCursorToggle(tw, TOGGLE);
864	    Ttoggled = True;
865	}
866    }
867    tek = TekRecord;
868    if (tek->count >= TEK_LINK_BLOCK_SIZE
869	|| tek->fontsize != tekscr->cur.fontsize) {
870	if ((TekRecord = tek->next = CastMalloc(TekLink)) == 0) {
871	    Panic("Tinput: malloc error (%d)\n", errno);
872	} else {
873	    tek = tek->next;
874	    tek->next = (TekLink *) 0;
875	    tek->fontsize = (unsigned short) tekscr->cur.fontsize;
876	    tek->count = 0;
877	    tek->ptr = tek->data;
878	}
879    }
880    tek->count++;
881
882    (void) morePtyData(screen, VTbuffer);
883    return (IChar) (*tek->ptr++ = (char) nextPtyData(screen, VTbuffer));
884}
885
886static void
887TekClear(TekWidget tw)
888{
889    TekScreen *tekscr = TekScreenOf(tw);
890
891    if (TWindow(tekscr))
892	XClearWindow(XtDisplay(tw), TWindow(tekscr));
893}
894
895/* this should become the Tek Widget's Resize proc */
896static void
897TekConfigure(Widget w)
898{
899    TekWidget tw = getTekWidget(w);
900    if (tw != 0) {
901	XtermWidget xw = term;
902	TekScreen *tekscr = TekScreenOf(tw);
903	TScreen *screen = TScreenOf(xw);
904	int border = 2 * screen->border;
905	double d;
906
907	TekClear(tw);
908	TWidth(tekscr) = w->core.width - border;
909	THeight(tekscr) = w->core.height - border;
910	TekScale(tekscr) = (double) TWidth(tekscr) / TEKWIDTH;
911	if ((d = (double) THeight(tekscr) / (TEKHEIGHT + TEKTOPPAD + TEKBOTTOMPAD))
912	    < TekScale(tekscr))
913	    TekScale(tekscr) = d;
914	TFullWidth(tekscr) = w->core.width;
915	TFullHeight(tekscr) = w->core.height;
916    }
917}
918
919/*ARGSUSED*/
920void
921TekExpose(Widget w,
922	  XEvent * event GCC_UNUSED,
923	  Region region GCC_UNUSED)
924{
925    TekWidget tw = getTekWidget(w);
926    if (tw != 0) {
927	TekScreen *tekscr = TekScreenOf(tw);
928
929	TRACE(("TekExpose {{\n"));
930
931#ifdef lint
932	region = region;
933#endif
934	if (!Ttoggled)
935	    TCursorToggle(tw, CLEAR);
936	Ttoggled = True;
937	Tpushback = Tpushb;
938	tekscr->cur_X = 0;
939	tekscr->cur_Y = TEKHOME;
940	tekscr->cur = tekscr->page;
941	TekSetFontSize(tw, False, tekscr->cur.fontsize);
942	tekscr->margin = MARGIN1;
943	if (tekscr->TekGIN) {
944	    tekscr->TekGIN = NULL;
945	    TekGINoff(tw);
946	}
947	tekRefreshList = &Tek0;
948	rptr = tekRefreshList->data;
949	rcnt = tekRefreshList->count;
950	Tparsestate = curstate = Talptable;
951	TRACE(("TekExpose resets data to replay %d bytes\n", rcnt));
952	first_map_occurred();
953	if (!tekscr->waitrefresh)
954	    TekRefresh(tw);
955	TRACE(("}} TekExpose\n"));
956    }
957}
958
959void
960TekRefresh(TekWidget tw)
961{
962    if (tw != 0) {
963	XtermWidget xw = term;
964	TScreen *screen = TScreenOf(xw);
965	TekScreen *tekscr = TekScreenOf(tw);
966	static Cursor wait_cursor = None;
967
968	if (wait_cursor == None)
969	    wait_cursor = make_colored_cursor(XC_watch,
970					      T_COLOR(screen, MOUSE_FG),
971					      T_COLOR(screen, MOUSE_BG));
972	XDefineCursor(XtDisplay(tw), TWindow(tekscr), wait_cursor);
973	XFlush(XtDisplay(tw));
974	if (!setjmp(Tekjump))
975	    Tekparse(tw);
976	XDefineCursor(XtDisplay(tw), TWindow(tekscr),
977		      (tekscr->TekGIN && GINcursor) ? GINcursor : tekscr->arrow);
978    }
979}
980
981void
982TekRepaint(TekWidget tw)
983{
984    TRACE(("TekRepaint\n"));
985    TekClear(tw);
986    TekExpose((Widget) tw, (XEvent *) NULL, (Region) NULL);
987}
988
989static void
990TekPage(TekWidget tw)
991{
992    TekScreen *tekscr = TekScreenOf(tw);
993    TekLink *tek;
994
995    TekClear(tw);
996    tekscr->cur_X = 0;
997    tekscr->cur_Y = TEKHOME;
998    tekscr->margin = MARGIN1;
999    tekscr->page = tekscr->cur;
1000    if (tekscr->TekGIN)
1001	TekGINoff(tw);
1002    tek = TekRecord = &Tek0;
1003    tek->fontsize = (unsigned short) tekscr->cur.fontsize;
1004    tek->count = 0;
1005    tek->ptr = tek->data;
1006    tek = tek->next;
1007    if (tek)
1008	do {
1009	    TekLink *tek2 = tek->next;
1010
1011	    free(tek);
1012	    tek = tek2;
1013	} while (tek);
1014    TekRecord->next = (TekLink *) 0;
1015    tekRefreshList = (TekLink *) 0;
1016    Ttoggled = True;
1017    Tparsestate = curstate = Talptable;		/* Tek Alpha mode */
1018}
1019
1020#define	EXTRABITS	017
1021#define	FIVEBITS	037
1022#define	HIBITS		(FIVEBITS << SHIFTHI)
1023#define	LOBITS		(FIVEBITS << SHIFTLO)
1024#define	SHIFTHI		7
1025#define	SHIFTLO		2
1026#define	TWOBITS		03
1027
1028static int
1029getpoint(TekWidget tw)
1030{
1031    int c, x, y, e, lo_y = 0;
1032    TekScreen *tekscr = TekScreenOf(tw);
1033
1034    x = tekscr->cur.x;
1035    y = tekscr->cur.y;
1036    for (;;) {
1037	if ((c = (int) input()) < ' ') {	/* control character */
1038	    unput(c);
1039	    return (0);
1040	}
1041	if (c < '@') {		/* Hi X or Hi Y */
1042	    if (lo_y) {		/* seen a Lo Y, so this must be Hi X */
1043		x &= ~HIBITS;
1044		x |= (c & FIVEBITS) << SHIFTHI;
1045		continue;
1046	    }
1047	    /* else Hi Y */
1048	    y &= ~HIBITS;
1049	    y |= (c & FIVEBITS) << SHIFTHI;
1050	    continue;
1051	}
1052	if (c < '`') {		/* Lo X */
1053	    x &= ~LOBITS;
1054	    x |= (c & FIVEBITS) << SHIFTLO;
1055	    tekscr->cur.x = x;
1056	    tekscr->cur.y = y;
1057	    return (1);		/* OK */
1058	}
1059	/* else Lo Y */
1060	if (lo_y) {		/* seen a Lo Y, so other must be extra bits */
1061	    e = (y >> SHIFTLO) & EXTRABITS;
1062	    x &= ~TWOBITS;
1063	    x |= e & TWOBITS;
1064	    y &= ~TWOBITS;
1065	    y |= (e >> SHIFTLO) & TWOBITS;
1066	}
1067	y &= ~LOBITS;
1068	y |= (c & FIVEBITS) << SHIFTLO;
1069	lo_y++;
1070    }
1071}
1072
1073static void
1074TCursorBack(TekWidget tw)
1075{
1076    TekScreen *tekscr = TekScreenOf(tw);
1077    struct Tek_Char *t;
1078    int x, l;
1079
1080    x = (tekscr->cur_X -=
1081	 (t = &TekChar[tekscr->cur.fontsize])->hsize
1082	);
1083
1084    if (((tekscr->margin == MARGIN1) && (x < 0))
1085	|| ((tekscr->margin == MARGIN2) && (x < TEKWIDTH / 2))) {
1086	if ((l = (tekscr->cur_Y + (t->vsize - 1)) / t->vsize + 1) >=
1087	    t->nlines) {
1088	    tekscr->margin = !tekscr->margin;
1089	    l = 0;
1090	}
1091	tekscr->cur_Y = l * t->vsize;
1092	tekscr->cur_X = (t->charsperline - 1) * t->hsize;
1093    }
1094}
1095
1096static void
1097TCursorForward(TekWidget tw)
1098{
1099    TekScreen *tekscr = TekScreenOf(tw);
1100    struct Tek_Char *t;
1101    int l;
1102
1103    if ((tekscr->cur_X +=
1104	 (t = &TekChar[tekscr->cur.fontsize])->hsize
1105	) > TEKWIDTH
1106	) {
1107	if ((l = tekscr->cur_Y / t->vsize - 1) < 0) {
1108	    tekscr->margin = !tekscr->margin;
1109	    l = t->nlines - 1;
1110	}
1111	tekscr->cur_Y = l * t->vsize;
1112	tekscr->cur_X = tekscr->margin == MARGIN1 ? 0 : TEKWIDTH / 2;
1113    }
1114}
1115
1116static void
1117TCursorUp(TekWidget tw)
1118{
1119    TekScreen *tekscr = TekScreenOf(tw);
1120    struct Tek_Char *t;
1121    int l;
1122
1123    t = &TekChar[tekscr->cur.fontsize];
1124
1125    if ((l = (tekscr->cur_Y + (t->vsize - 1)) / t->vsize + 1) >= t->nlines) {
1126	l = 0;
1127	if ((tekscr->margin = !tekscr->margin) != MARGIN1) {
1128	    if (tekscr->cur_X < TEKWIDTH / 2)
1129		tekscr->cur_X += TEKWIDTH / 2;
1130	} else if (tekscr->cur_X >= TEKWIDTH / 2)
1131	    tekscr->cur_X -= TEKWIDTH / 2;
1132    }
1133    tekscr->cur_Y = l * t->vsize;
1134}
1135
1136static void
1137TCursorDown(TekWidget tw)
1138{
1139    TekScreen *tekscr = TekScreenOf(tw);
1140    struct Tek_Char *t;
1141    int l;
1142
1143    t = &TekChar[tekscr->cur.fontsize];
1144
1145    if ((l = tekscr->cur_Y / t->vsize - 1) < 0) {
1146	l = t->nlines - 1;
1147	if ((tekscr->margin = !tekscr->margin) != MARGIN1) {
1148	    if (tekscr->cur_X < TEKWIDTH / 2)
1149		tekscr->cur_X += TEKWIDTH / 2;
1150	} else if (tekscr->cur_X >= TEKWIDTH / 2)
1151	    tekscr->cur_X -= TEKWIDTH / 2;
1152    }
1153    tekscr->cur_Y = l * t->vsize;
1154}
1155
1156static void
1157AddToDraw(TekWidget tw, int x1, int y1, int x2, int y2)
1158{
1159    XtermWidget xw = term;
1160    TScreen *screen = TScreenOf(xw);
1161    TekScreen *tekscr = TekScreenOf(tw);
1162    XSegment *lp;
1163
1164    TRACE(("AddToDraw (%d,%d) (%d,%d)\n", x1, y1, x2, y2));
1165    if (nplot >= MAX_PTS) {
1166	TekFlush(tw);
1167    }
1168    lp = line_pt++;
1169    lp->x1 = (short) (x1 * TekScale(tekscr) + screen->border);
1170    lp->y1 = (short) ((TEKHEIGHT + TEKTOPPAD - y1) * TekScale(tekscr) +
1171		      screen->border);
1172    lp->x2 = (short) (x2 * TekScale(tekscr) + screen->border);
1173    lp->y2 = (short) ((TEKHEIGHT + TEKTOPPAD - y2) * TekScale(tekscr) +
1174		      screen->border);
1175    nplot++;
1176    TRACE(("...AddToDraw %d points\n", nplot));
1177}
1178
1179static void
1180TekDraw(TekWidget tw, int x, int y)
1181{
1182    TekScreen *tekscr = TekScreenOf(tw);
1183
1184    if (nplot == 0 || T_lastx != tekscr->cur_X || T_lasty != tekscr->cur_Y) {
1185	/*
1186	 * We flush on each unconnected line segment if the line
1187	 * type is not solid.  This solves a bug in X when drawing
1188	 * points while the line type is not solid.
1189	 */
1190	if (nplot > 0 && tekscr->cur.linetype != SOLIDLINE)
1191	    TekFlush(tw);
1192    }
1193    AddToDraw(tw, tekscr->cur_X, tekscr->cur_Y, x, y);
1194    T_lastx = tekscr->cur_X = x;
1195    T_lasty = tekscr->cur_Y = y;
1196}
1197
1198static void
1199TekFlush(TekWidget tw)
1200{
1201    TekScreen *tekscr = TekScreenOf(tw);
1202
1203    TRACE(("TekFlush\n"));
1204    XDrawSegments(XtDisplay(tw), TWindow(tekscr),
1205		  ((tekscr->cur.linetype == SOLIDLINE)
1206		   ? tekscr->TnormalGC
1207		   : tekscr->linepat[tekscr->cur.linetype - 1]),
1208		  Tline, nplot);
1209    nplot = 0;
1210    line_pt = Tline;
1211}
1212
1213void
1214TekGINoff(TekWidget tw)
1215{
1216    TekScreen *tekscr = TekScreenOf(tw);
1217
1218    TRACE(("TekGINoff\n"));
1219    XDefineCursor(XtDisplay(tw), TWindow(tekscr), tekscr->arrow);
1220    if (GINcursor)
1221	XFreeCursor(XtDisplay(tw), GINcursor);
1222    if (tekscr->TekGIN) {
1223	*tekscr->TekGIN = ANSI_CAN;	/* modify recording */
1224	tekscr->TekGIN = NULL;
1225    }
1226}
1227
1228void
1229TekEnqMouse(TekWidget tw, int c)	/* character pressed */
1230{
1231    XtermWidget xw = term;
1232    TScreen *screen = TScreenOf(xw);
1233    TekScreen *tekscr = TekScreenOf(tw);
1234    int mousex, mousey, rootx, rooty;
1235    unsigned int mask;		/* XQueryPointer */
1236    Window root, subw;
1237
1238    TRACE(("TekEnqMouse\n"));
1239    XQueryPointer(
1240		     XtDisplay(tw), TWindow(tekscr),
1241		     &root, &subw,
1242		     &rootx, &rooty,
1243		     &mousex, &mousey,
1244		     &mask);
1245    if ((mousex = (int) ((mousex - screen->border) / TekScale(tekscr))) < 0)
1246	mousex = 0;
1247    else if (mousex >= TEKWIDTH)
1248	mousex = TEKWIDTH - 1;
1249    if ((mousey = (int) (TEKHEIGHT + TEKTOPPAD - (mousey - screen->border) /
1250			 TekScale(tekscr))) < 0)
1251	mousey = 0;
1252    else if (mousey >= TEKHEIGHT)
1253	mousey = TEKHEIGHT - 1;
1254    TekEnq(tw, (unsigned) c, mousex, mousey);
1255}
1256
1257static void
1258TekEnq(TekWidget tw,
1259       unsigned status,
1260       int x,
1261       int y)
1262{
1263    XtermWidget xw = term;
1264    TScreen *screen = TScreenOf(xw);
1265    TekScreen *tekscr = TekScreenOf(tw);
1266    Char cplot[7];
1267    int len = 5;
1268    int adj = (status != 0) ? 0 : 1;
1269
1270    TRACE(("TekEnq\n"));
1271    cplot[0] = (Char) status;
1272    /* Translate x and y to Tektronix code */
1273    cplot[1] = (Char) (040 | ((x >> SHIFTHI) & FIVEBITS));
1274    cplot[2] = (Char) (040 | ((x >> SHIFTLO) & FIVEBITS));
1275    cplot[3] = (Char) (040 | ((y >> SHIFTHI) & FIVEBITS));
1276    cplot[4] = (Char) (040 | ((y >> SHIFTLO) & FIVEBITS));
1277
1278    if (tekscr->gin_terminator != GIN_TERM_NONE)
1279	cplot[len++] = '\r';
1280    if (tekscr->gin_terminator == GIN_TERM_EOT)
1281	cplot[len++] = '\004';
1282#ifdef VMS
1283    tt_write(cplot + adj, len - adj);
1284#else /* VMS */
1285    v_write(screen->respond, cplot + adj, (unsigned) (len - adj));
1286#endif /* VMS */
1287}
1288
1289void
1290TekRun(void)
1291{
1292    XtermWidget xw = term;
1293
1294    assert(xw != 0);
1295    if (tekWidget == 0) {
1296	TekInit();
1297    }
1298    if (tekWidget != 0) {
1299	TRACE(("TekRun ...\n"));
1300
1301	if (!TEK4014_SHOWN(xw)) {
1302	    set_tek_visibility(True);
1303	}
1304	update_vttekmode();
1305	update_vtshow();
1306	update_tekshow();
1307	set_tekhide_sensitivity();
1308
1309	Tpushback = Tpushb;
1310	Ttoggled = True;
1311	if (!setjmp(Tekend))
1312	    Tekparse(tekWidget);
1313	if (!Ttoggled) {
1314	    TCursorToggle(tekWidget, TOGGLE);
1315	    Ttoggled = True;
1316	}
1317	TEK4014_ACTIVE(xw) = False;
1318    } else {
1319	TEK4014_ACTIVE(xw) = False;
1320	if (VWindow(TScreenOf(xw)) == 0) {
1321	    Exit(ERROR_TINIT);
1322	}
1323    }
1324}
1325
1326#define DOTTED_LENGTH 2
1327#define DOT_DASHED_LENGTH 4
1328#define SHORT_DASHED_LENGTH 2
1329#define LONG_DASHED_LENGTH 2
1330
1331static int dash_length[TEKNUMLINES] =
1332{
1333    DOTTED_LENGTH,
1334    DOT_DASHED_LENGTH,
1335    SHORT_DASHED_LENGTH,
1336    LONG_DASHED_LENGTH,
1337};
1338
1339static unsigned char dotted[DOTTED_LENGTH] =
1340{3, 1};
1341static unsigned char dot_dashed[DOT_DASHED_LENGTH] =
1342{3, 4, 3, 1};
1343static unsigned char short_dashed[SHORT_DASHED_LENGTH] =
1344{4, 4};
1345static unsigned char long_dashed[LONG_DASHED_LENGTH] =
1346{4, 7};
1347
1348static unsigned char *dashes[TEKNUMLINES] =
1349{
1350    dotted,
1351    dot_dashed,
1352    short_dashed,
1353    long_dashed,
1354};
1355
1356/*
1357 * The following is called to create the tekWidget
1358 */
1359
1360static void
1361TekInitialize(Widget request GCC_UNUSED,
1362	      Widget wnew GCC_UNUSED,
1363	      ArgList args GCC_UNUSED,
1364	      Cardinal *num_args GCC_UNUSED)
1365{
1366    Widget tekparent = SHELL_OF(wnew);
1367#ifndef NO_ACTIVE_ICON
1368    TekScreen *screen = TekScreenOf((TekWidget) wnew);
1369#endif
1370
1371    TRACE(("TekInitialize\n"));
1372
1373    /* look for focus related events on the shell, because we need
1374     * to care about the shell's border being part of our focus.
1375     */
1376    XtAddEventHandler(tekparent, EnterWindowMask, False,
1377		      HandleEnterWindow, (Opaque) 0);
1378    XtAddEventHandler(tekparent, LeaveWindowMask, False,
1379		      HandleLeaveWindow, (Opaque) 0);
1380    XtAddEventHandler(tekparent, FocusChangeMask, False,
1381		      HandleFocusChange, (Opaque) 0);
1382    XtAddEventHandler(wnew, PropertyChangeMask, False,
1383		      HandleBellPropertyChange, (Opaque) 0);
1384
1385#ifndef NO_ACTIVE_ICON
1386    screen->whichTwin = &(screen->fullTwin);
1387#endif /* NO_ACTIVE_ICON */
1388
1389}
1390
1391static void
1392TekRealize(Widget gw,
1393	   XtValueMask * valuemaskp,
1394	   XSetWindowAttributes * values)
1395{
1396    XtermWidget xw = term;
1397    TScreen *screen = TScreenOf(xw);
1398    TekWidget tw = (TekWidget) gw;
1399    TekScreen *tekscr = TekScreenOf(tw);
1400    int i;
1401    TekLink *tek;
1402    double d;
1403    int border = 2 * screen->border;
1404    int pr;
1405    XGCValues gcv;
1406    int winX, winY;
1407    unsigned width, height;
1408    char Tdefault[32];
1409    unsigned long TEKgcFontMask;
1410
1411    TRACE(("TekRealize\n"));
1412    memset(tekscr, 0, sizeof(*tekscr));
1413
1414#ifndef NO_ACTIVE_ICON
1415    tekscr->whichTwin = &tekscr->fullTwin;
1416#endif /* NO_ACTIVE_ICON */
1417
1418    BorderPixel(tw) = BorderPixel(xw);
1419
1420    tekscr->arrow = make_colored_cursor(XC_left_ptr,
1421					T_COLOR(screen, MOUSE_FG),
1422					T_COLOR(screen, MOUSE_BG));
1423
1424    for (i = 0; i < TEKNUMFONTS; i++) {
1425	if (!tw->tek.Tfont[i]) {
1426	    tw->tek.Tfont[i] = XQueryFont(XtDisplay(tw), DefaultGCID);
1427	}
1428	TRACE(("Tfont[%d] %dx%d\n",
1429	       i,
1430	       tw->tek.Tfont[i]->ascent +
1431	       tw->tek.Tfont[i]->descent,
1432	       tw->tek.Tfont[i]->max_bounds.width));
1433	tw->tek.tobaseline[i] = tw->tek.Tfont[i]->ascent;
1434    }
1435
1436    if (!TekPtyData())
1437	return;
1438
1439    if (xw->misc.T_geometry == NULL) {
1440	int defwidth, defheight;
1441
1442	if (xw->misc.tekSmall) {
1443	    defwidth = TEKMINWIDTH;
1444	    defheight = TEKMINHEIGHT;
1445	} else {
1446	    defwidth = TEKDEFWIDTH;
1447	    defheight = TEKDEFHEIGHT;
1448	}
1449	sprintf(Tdefault, "=%dx%d", defwidth + border, defheight + border);
1450	xw->misc.T_geometry = Tdefault;
1451    }
1452
1453    winX = 1;
1454    winY = 1;
1455    width = (unsigned) (TEKDEFWIDTH + border);
1456    height = (unsigned) (TEKDEFHEIGHT + border);
1457
1458    TRACE(("parsing T_geometry %s\n", NonNull(xw->misc.T_geometry)));
1459    pr = XParseGeometry(xw->misc.T_geometry,
1460			&winX,
1461			&winY,
1462			&width,
1463			&height);
1464    TRACE(("... position %d,%d size %dx%d\n", winY, winX, height, width));
1465    if ((pr & XValue) && (pr & XNegative))
1466	winX += DisplayWidth(XtDisplay(tw), DefaultScreen(XtDisplay(tw)))
1467	    - (int) width - (BorderWidth(SHELL_OF(xw)) * 2);
1468    if ((pr & YValue) && (pr & YNegative))
1469	winY += DisplayHeight(XtDisplay(tw), DefaultScreen(XtDisplay(tw)))
1470	    - (int) height - (BorderWidth(SHELL_OF(xw)) * 2);
1471
1472    /* set up size hints */
1473    tw->hints.min_width = TEKMINWIDTH + border;
1474    tw->hints.min_height = TEKMINHEIGHT + border;
1475    tw->hints.width_inc = 1;
1476    tw->hints.height_inc = 1;
1477    tw->hints.flags = PMinSize | PResizeInc;
1478    tw->hints.x = winX;
1479    tw->hints.y = winY;
1480    if ((XValue & pr) || (YValue & pr)) {
1481	tw->hints.flags |= USSize | USPosition;
1482	tw->hints.flags |= PWinGravity;
1483	switch (pr & (XNegative | YNegative)) {
1484	case 0:
1485	    tw->hints.win_gravity = NorthWestGravity;
1486	    break;
1487	case XNegative:
1488	    tw->hints.win_gravity = NorthEastGravity;
1489	    break;
1490	case YNegative:
1491	    tw->hints.win_gravity = SouthWestGravity;
1492	    break;
1493	default:
1494	    tw->hints.win_gravity = SouthEastGravity;
1495	    break;
1496	}
1497    } else {
1498	/* set a default size, but do *not* set position */
1499	tw->hints.flags |= PSize;
1500    }
1501    tw->hints.width = (int) width;
1502    tw->hints.height = (int) height;
1503    if ((WidthValue & pr) || (HeightValue & pr))
1504	tw->hints.flags |= USSize;
1505    else
1506	tw->hints.flags |= PSize;
1507
1508    (void) REQ_RESIZE((Widget) tw,
1509		      (Dimension) width, (Dimension) height,
1510		      &tw->core.width, &tw->core.height);
1511
1512    /* XXX This is bogus.  We are parsing geometries too late.  This
1513     * is information that the shell widget ought to have before we get
1514     * realized, so that it can do the right thing.
1515     */
1516    if (tw->hints.flags & USPosition)
1517	XMoveWindow(XtDisplay(tw), TShellWindow, tw->hints.x, tw->hints.y);
1518
1519    XSetWMNormalHints(XtDisplay(tw), TShellWindow, &tw->hints);
1520    XFlush(XtDisplay(tw));	/* get it out to window manager */
1521
1522    values->win_gravity = NorthWestGravity;
1523    values->background_pixel = T_COLOR(screen, TEK_BG);
1524
1525    XtWindow(tw) = TWindow(tekscr) =
1526	XCreateWindow(XtDisplay(tw),
1527		      XtWindow(SHELL_OF(tw)),
1528		      tw->core.x, tw->core.y,
1529		      tw->core.width, tw->core.height,
1530		      BorderWidth(tw),
1531		      (int) tw->core.depth,
1532		      InputOutput, CopyFromParent,
1533		      ((*valuemaskp) | CWBackPixel | CWWinGravity),
1534		      values);
1535
1536    TFullWidth(tekscr) = (Dimension) width;
1537    TFullHeight(tekscr) = (Dimension) height;
1538    TWidth(tekscr) = (int) width - border;
1539    THeight(tekscr) = (int) height - border;
1540    TekScale(tekscr) = (double) TWidth(tekscr) / TEKWIDTH;
1541    if ((d = (double) THeight(tekscr) / (TEKHEIGHT + TEKTOPPAD +
1542					 TEKBOTTOMPAD)) < TekScale(tekscr))
1543	TekScale(tekscr) = d;
1544
1545    tekscr->cur.fontsize = TEK_FONT_LARGE;
1546    if (tw->tek.initial_font) {
1547	int result = TekGetFontSize(tw->tek.initial_font);
1548	if (result >= 0)
1549	    tekscr->cur.fontsize = result;
1550    }
1551#define TestGIN(s) XmuCompareISOLatin1(tw->tek.gin_terminator_str, s)
1552
1553    if (TestGIN(GIN_TERM_NONE_STR) == 0)
1554	tekscr->gin_terminator = GIN_TERM_NONE;
1555    else if (TestGIN(GIN_TERM_CR_STR) == 0)
1556	tekscr->gin_terminator = GIN_TERM_CR;
1557    else if (TestGIN(GIN_TERM_EOT_STR) == 0)
1558	tekscr->gin_terminator = GIN_TERM_EOT;
1559    else
1560	fprintf(stderr, "%s: illegal GIN terminator setting \"%s\"\n",
1561		xterm_name, tw->tek.gin_terminator_str);
1562
1563    gcv.graphics_exposures = True;	/* default */
1564    gcv.font = tw->tek.Tfont[tekscr->cur.fontsize]->fid;
1565    gcv.foreground = T_COLOR(screen, TEK_FG);
1566    gcv.background = T_COLOR(screen, TEK_BG);
1567
1568    /* if font wasn't successfully opened, then gcv.font will contain
1569       the Default GC's ID, meaning that we must use the server default font.
1570     */
1571    TEKgcFontMask = (unsigned long) ((gcv.font == DefaultGCID) ? 0 : GCFont);
1572    tekscr->TnormalGC = XCreateGC(XtDisplay(tw), TWindow(tekscr),
1573				  (TEKgcFontMask | GCGraphicsExposures |
1574				   GCForeground | GCBackground),
1575				  &gcv);
1576
1577    gcv.function = GXinvert;
1578    gcv.plane_mask = (T_COLOR(screen, TEK_BG) ^
1579		      T_COLOR(screen, TEK_CURSOR));
1580    gcv.join_style = JoinMiter;	/* default */
1581    gcv.line_width = 1;
1582    tekscr->TcursorGC = XCreateGC(XtDisplay(tw), TWindow(tekscr),
1583				  (GCFunction | GCPlaneMask), &gcv);
1584
1585    gcv.foreground = T_COLOR(screen, TEK_FG);
1586    gcv.line_style = LineOnOffDash;
1587    gcv.line_width = 0;
1588    for (i = 0; i < TEKNUMLINES; i++) {
1589	tekscr->linepat[i] = XCreateGC(XtDisplay(tw), TWindow(tekscr),
1590				       (GCForeground | GCLineStyle), &gcv);
1591	XSetDashes(XtDisplay(tw), tekscr->linepat[i], 0,
1592		   (char *) dashes[i], dash_length[i]);
1593    }
1594
1595    TekBackground(tw, screen);
1596
1597    tekscr->margin = MARGIN1;	/* Margin 1             */
1598    tekscr->TekGIN = False;	/* GIN off              */
1599
1600    XDefineCursor(XtDisplay(tw), TWindow(tekscr), tekscr->arrow);
1601
1602    {				/* there's gotta be a better way... */
1603	static Arg args[] =
1604	{
1605	    {XtNtitle, (XtArgVal) NULL},
1606	    {XtNiconName, (XtArgVal) NULL},
1607	};
1608	char *icon_name, *title, *tek_icon_name, *tek_title;
1609
1610	args[0].value = (XtArgVal) & icon_name;
1611	args[1].value = (XtArgVal) & title;
1612	XtGetValues(SHELL_OF(tw), args, 2);
1613	tek_icon_name = XtMalloc((Cardinal) strlen(icon_name) + 7);
1614	strcpy(tek_icon_name, icon_name);
1615	strcat(tek_icon_name, "(Tek)");
1616	tek_title = XtMalloc((Cardinal) strlen(title) + 7);
1617	strcpy(tek_title, title);
1618	strcat(tek_title, "(Tek)");
1619	args[0].value = (XtArgVal) tek_icon_name;
1620	args[1].value = (XtArgVal) tek_title;
1621	XtSetValues(SHELL_OF(tw), args, 2);
1622	XtFree(tek_icon_name);
1623	XtFree(tek_title);
1624    }
1625
1626    tek = TekRecord = &Tek0;
1627    tek->next = (TekLink *) 0;
1628    tek->fontsize = (unsigned short) tekscr->cur.fontsize;
1629    tek->count = 0;
1630    tek->ptr = tek->data;
1631    Tpushback = Tpushb;
1632    tekscr->cur_X = 0;
1633    tekscr->cur_Y = TEKHOME;
1634    line_pt = Tline;
1635    Ttoggled = True;
1636    tekscr->page = tekscr->cur;
1637    return;
1638}
1639
1640int
1641TekGetFontSize(const char *param)
1642{
1643    int result;
1644
1645    if (XmuCompareISOLatin1(param, "l") == 0 ||
1646	XmuCompareISOLatin1(param, "large") == 0)
1647	result = TEK_FONT_LARGE;
1648    else if (XmuCompareISOLatin1(param, "2") == 0 ||
1649	     XmuCompareISOLatin1(param, "two") == 0)
1650	result = TEK_FONT_2;
1651    else if (XmuCompareISOLatin1(param, "3") == 0 ||
1652	     XmuCompareISOLatin1(param, "three") == 0)
1653	result = TEK_FONT_3;
1654    else if (XmuCompareISOLatin1(param, "s") == 0 ||
1655	     XmuCompareISOLatin1(param, "small") == 0)
1656	result = TEK_FONT_SMALL;
1657    else
1658	result = -1;
1659
1660    return result;
1661}
1662
1663void
1664TekSetFontSize(TekWidget tw, Bool fromMenu, int newitem)
1665{
1666    if (tw != 0) {
1667	XtermWidget xw = term;
1668	TekScreen *tekscr = TekScreenOf(tw);
1669	int oldsize = tekscr->cur.fontsize;
1670	int newsize = MI2FS(newitem);
1671	Font fid;
1672
1673	TRACE(("TekSetFontSize(%d) size %d ->%d\n", newitem, oldsize, newsize));
1674	if (newsize < 0 || newsize >= TEKNUMFONTS) {
1675	    Bell(xw, XkbBI_MinorError, 0);
1676	} else if (oldsize != newsize) {
1677	    if (!Ttoggled)
1678		TCursorToggle(tw, TOGGLE);
1679	    set_tekfont_menu_item(oldsize, False);
1680
1681	    tekscr->cur.fontsize = newsize;
1682	    if (fromMenu)
1683		tekscr->page.fontsize = newsize;
1684
1685	    fid = tw->tek.Tfont[newsize]->fid;
1686	    if (fid == DefaultGCID) {
1687		/* we didn't succeed in opening a real font
1688		   for this size.  Instead, use server default. */
1689		XCopyGC(XtDisplay(tw),
1690			DefaultGC(XtDisplay(tw), DefaultScreen(XtDisplay(tw))),
1691			GCFont, tekscr->TnormalGC);
1692	    } else {
1693		XSetFont(XtDisplay(tw), tekscr->TnormalGC, fid);
1694	    }
1695
1696	    set_tekfont_menu_item(newsize, True);
1697	    if (!Ttoggled)
1698		TCursorToggle(tw, TOGGLE);
1699
1700	    if (fromMenu) {
1701		/* we'll get an exposure event after changing fontsize, so we
1702		 * have to clear the screen to avoid painting over the previous
1703		 * text.
1704		 */
1705		TekClear(tw);
1706	    }
1707	}
1708    }
1709}
1710
1711void
1712ChangeTekColors(TekWidget tw, TScreen * screen, ScrnColors * pNew)
1713{
1714    TekScreen *tekscr = TekScreenOf(tw);
1715    int i;
1716    XGCValues gcv;
1717
1718    if (COLOR_DEFINED(pNew, TEK_FG)) {
1719	T_COLOR(screen, TEK_FG) = COLOR_VALUE(pNew, TEK_FG);
1720	TRACE(("... TEK_FG: %#lx\n", T_COLOR(screen, TEK_FG)));
1721    }
1722    if (COLOR_DEFINED(pNew, TEK_BG)) {
1723	T_COLOR(screen, TEK_BG) = COLOR_VALUE(pNew, TEK_BG);
1724	TRACE(("... TEK_BG: %#lx\n", T_COLOR(screen, TEK_BG)));
1725    }
1726    if (COLOR_DEFINED(pNew, TEK_CURSOR)) {
1727	T_COLOR(screen, TEK_CURSOR) = COLOR_VALUE(pNew, TEK_CURSOR);
1728	TRACE(("... TEK_CURSOR: %#lx\n", T_COLOR(screen, TEK_CURSOR)));
1729    } else {
1730	T_COLOR(screen, TEK_CURSOR) = T_COLOR(screen, TEK_FG);
1731	TRACE(("... TEK_CURSOR: %#lx\n", T_COLOR(screen, TEK_CURSOR)));
1732    }
1733
1734    if (tw) {
1735	XSetForeground(XtDisplay(tw), tekscr->TnormalGC,
1736		       T_COLOR(screen, TEK_FG));
1737	XSetBackground(XtDisplay(tw), tekscr->TnormalGC,
1738		       T_COLOR(screen, TEK_BG));
1739	if (BorderPixel(tw) == T_COLOR(screen, TEK_BG)) {
1740	    BorderPixel(tw) = T_COLOR(screen, TEK_FG);
1741	    BorderPixel(XtParent(tw)) = T_COLOR(screen, TEK_FG);
1742	    if (XtWindow(XtParent(tw)))
1743		XSetWindowBorder(XtDisplay(tw),
1744				 XtWindow(XtParent(tw)),
1745				 BorderPixel(tw));
1746	}
1747
1748	for (i = 0; i < TEKNUMLINES; i++) {
1749	    XSetForeground(XtDisplay(tw), tekscr->linepat[i],
1750			   T_COLOR(screen, TEK_FG));
1751	}
1752
1753	gcv.plane_mask = (T_COLOR(screen, TEK_BG) ^
1754			  T_COLOR(screen, TEK_CURSOR));
1755	XChangeGC(XtDisplay(tw), tekscr->TcursorGC, GCPlaneMask, &gcv);
1756	TekBackground(tw, screen);
1757    }
1758    return;
1759}
1760
1761void
1762TekReverseVideo(TekWidget tw)
1763{
1764    XtermWidget xw = term;
1765    TScreen *screen = TScreenOf(xw);
1766    TekScreen *tekscr = TekScreenOf(tw);
1767    int i;
1768    Pixel tmp;
1769    XGCValues gcv;
1770
1771    EXCHANGE(T_COLOR(screen, TEK_FG), T_COLOR(screen, TEK_BG), tmp);
1772
1773    T_COLOR(screen, TEK_CURSOR) = T_COLOR(screen, TEK_FG);
1774
1775    if (tw) {
1776	XSetForeground(XtDisplay(tw), tekscr->TnormalGC, T_COLOR(screen, TEK_FG));
1777	XSetBackground(XtDisplay(tw), tekscr->TnormalGC, T_COLOR(screen, TEK_BG));
1778
1779	if (BorderPixel(tw) == T_COLOR(screen, TEK_BG)) {
1780	    BorderPixel(tw) = T_COLOR(screen, TEK_FG);
1781	    BorderPixel(XtParent(tw)) = T_COLOR(screen, TEK_FG);
1782	    if (XtWindow(XtParent(tw)))
1783		XSetWindowBorder(XtDisplay(tw),
1784				 XtWindow(XtParent(tw)),
1785				 BorderPixel(tw));
1786	}
1787
1788	for (i = 0; i < TEKNUMLINES; i++) {
1789	    XSetForeground(XtDisplay(tw), tekscr->linepat[i],
1790			   T_COLOR(screen, TEK_FG));
1791	}
1792
1793	gcv.plane_mask = (T_COLOR(screen, TEK_BG) ^
1794			  T_COLOR(screen, TEK_CURSOR));
1795	XChangeGC(XtDisplay(tw), tekscr->TcursorGC, GCPlaneMask, &gcv);
1796	TekBackground(tw, screen);
1797    }
1798}
1799
1800static void
1801TekBackground(TekWidget tw, TScreen * screen)
1802{
1803    TekScreen *tekscr = TekScreenOf(tw);
1804
1805    if (TWindow(tekscr))
1806	XSetWindowBackground(XtDisplay(tw), TWindow(tekscr),
1807			     T_COLOR(screen, TEK_BG));
1808}
1809
1810/*
1811 * Toggles cursor on or off at cursor position in screen.
1812 */
1813void
1814TCursorToggle(TekWidget tw, int toggle)		/* TOGGLE or CLEAR */
1815{
1816    XtermWidget xw = term;
1817    TekScreen *tekscr = TekScreenOf(tw);
1818    TScreen *screen = TScreenOf(xw);
1819    int c, x, y;
1820    unsigned int cellwidth, cellheight;
1821
1822    if (!TEK4014_SHOWN(xw))
1823	return;
1824
1825    TRACE(("TCursorToggle %s\n", (toggle == TOGGLE) ? "toggle" : "clear"));
1826    c = tekscr->cur.fontsize;
1827    cellwidth = (unsigned) tw->tek.Tfont[c]->max_bounds.width;
1828    cellheight = (unsigned) (tw->tek.Tfont[c]->ascent +
1829			     tw->tek.Tfont[c]->descent);
1830
1831    x = (int) ((tekscr->cur_X * TekScale(tekscr)) + screen->border);
1832    y = (int) (((TEKHEIGHT + TEKTOPPAD - tekscr->cur_Y) * TekScale(tekscr))
1833	       + screen->border - tw->tek.tobaseline[c]);
1834
1835    if (toggle == TOGGLE) {
1836	if (screen->select || screen->always_highlight)
1837	    XFillRectangle(XtDisplay(tw), TWindow(tekscr),
1838			   tekscr->TcursorGC, x, y,
1839			   cellwidth, cellheight);
1840	else {			/* fix to use different GC! */
1841	    XDrawRectangle(XtDisplay(tw), TWindow(tekscr),
1842			   tekscr->TcursorGC, x, y,
1843			   cellwidth - 1, cellheight - 1);
1844	}
1845    } else {
1846	/* Clear the entire rectangle, even though we may only
1847	 * have drawn an outline.  This fits with our refresh
1848	 * scheme of redrawing the entire window on any expose
1849	 * event and is easier than trying to figure out exactly
1850	 * which part of the cursor needs to be erased.
1851	 */
1852	XClearArea(XtDisplay(tw), TWindow(tekscr), x, y,
1853		   cellwidth, cellheight, False);
1854    }
1855}
1856
1857void
1858TekSimulatePageButton(TekWidget tw, Bool reset)
1859{
1860    if (tw != 0) {
1861	TekScreen *tekscr = TekScreenOf(tw);
1862
1863	if (reset) {
1864	    memset(&tekscr->cur, 0, sizeof tekscr->cur);
1865	}
1866	tekRefreshList = (TekLink *) 0;
1867	TekPage(tw);
1868	tekscr->cur_X = 0;
1869	tekscr->cur_Y = TEKHOME;
1870    }
1871}
1872
1873/* write copy of screen to a file */
1874
1875void
1876TekCopy(TekWidget tw)
1877{
1878    if (tw != 0) {
1879	XtermWidget xw = term;
1880	TekScreen *tekscr = TekScreenOf(tw);
1881	TScreen *screen = TScreenOf(xw);
1882
1883	TekLink *Tp;
1884	char buf[32];
1885	char initbuf[5];
1886	int tekcopyfd;
1887
1888	timestamp_filename(buf, "COPY");
1889	if (access(buf, F_OK) >= 0
1890	    && access(buf, W_OK) < 0) {
1891	    Bell(xw, XkbBI_MinorError, 0);
1892	    return;
1893	}
1894#ifndef VMS
1895	if (access(".", W_OK) < 0) {	/* can't write in directory */
1896	    Bell(xw, XkbBI_MinorError, 0);
1897	    return;
1898	}
1899#endif
1900
1901	tekcopyfd = open_userfile(screen->uid, screen->gid, buf, False);
1902	if (tekcopyfd >= 0) {
1903	    sprintf(initbuf, "%c%c%c%c",
1904		    ANSI_ESC, (char) (tekscr->page.fontsize + '8'),
1905		    ANSI_ESC, (char) (tekscr->page.linetype + '`'));
1906	    IGNORE_RC(write(tekcopyfd, initbuf, (size_t) 4));
1907	    Tp = &Tek0;
1908	    do {
1909		IGNORE_RC(write(tekcopyfd, Tp->data, (size_t) Tp->count));
1910		Tp = Tp->next;
1911	    } while (Tp);
1912	    close(tekcopyfd);
1913	}
1914    }
1915}
1916
1917/*ARGSUSED*/
1918void
1919HandleGINInput(Widget w,
1920	       XEvent * event GCC_UNUSED,
1921	       String * param_list,
1922	       Cardinal *nparamsp)
1923{
1924    XtermWidget xw = term;
1925    TekWidget tw = getTekWidget(w);
1926
1927    if (tw != 0) {
1928	TekScreen *tekscr = TekScreenOf(tw);
1929
1930	if (tekscr->TekGIN && *nparamsp == 1) {
1931	    int c = param_list[0][0];
1932	    switch (c) {
1933	    case 'l':
1934	    case 'm':
1935	    case 'r':
1936	    case 'L':
1937	    case 'M':
1938	    case 'R':
1939		break;
1940	    default:
1941		Bell(xw, XkbBI_MinorError, 0);	/* let them know they goofed */
1942		c = 'l';	/* provide a default */
1943	    }
1944	    TekEnqMouse(tw, c | 0x80);
1945	    TekGINoff(tw);
1946	} else {
1947	    Bell(xw, XkbBI_MinorError, 0);
1948	}
1949    }
1950}
1951
1952/*
1953 * Check if the current widget, or any parent, is the VT100 "xterm" widget.
1954 */
1955TekWidget
1956getTekWidget(Widget w)
1957{
1958    TekWidget xw;
1959
1960    if (w == 0) {
1961	xw = (TekWidget) CURRENT_EMU();
1962	if (!IsTekWidget(xw)) {
1963	    xw = 0;
1964	}
1965    } else if (IsTekWidget(w)) {
1966	xw = (TekWidget) w;
1967    } else {
1968	xw = getTekWidget(XtParent(w));
1969    }
1970    TRACE2(("getTekWidget %p -> %p\n", w, xw));
1971    return xw;
1972}
1973