Bug Summary

File:Tip.c
Location:line 255, column 19
Description:Access to field 'fid' results in a dereference of a null pointer (loaded from field 'font')

Annotated Source Code

1/*
2 * Copyright (c) 1999 by The XFree86 Project, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 *
22 * Except as contained in this notice, the name of the XFree86 Project shall
23 * not be used in advertising or otherwise to promote the sale, use or other
24 * dealings in this Software without prior written authorization from the
25 * XFree86 Project.
26 *
27 * Author: Paulo César Pereira de Andrade
28 */
29
30#ifdef HAVE_CONFIG_H1
31#include <config.h>
32#endif
33#include <X11/IntrinsicP.h>
34#include <X11/StringDefs.h>
35#include <X11/Xos.h>
36#include <X11/Xaw/TipP.h>
37#include <X11/Xaw/XawInit.h>
38#include <X11/Xmu/Converters.h>
39#include "Private.h"
40
41#define TIP_EVENT_MASK((1L<<2) | (1L<<3) | (1L<<6) | (1L<<13
) | (1L<<0) | (1L<<1) | (1L<<4) | (1L<<
5)) (ButtonPressMask(1L<<2) | \
42 ButtonReleaseMask(1L<<3) | \
43 PointerMotionMask(1L<<6) | \
44 ButtonMotionMask(1L<<13) | \
45 KeyPressMask(1L<<0) | \
46 KeyReleaseMask(1L<<1) | \
47 EnterWindowMask(1L<<4) | \
48 LeaveWindowMask(1L<<5))
49
50/*
51 * Types
52 */
53typedef struct _XawTipInfo {
54 Screen *screen;
55 TipWidget tip;
56 Widget widget;
57 Boolint mapped;
58 struct _XawTipInfo *next;
59} XawTipInfo;
60
61/*
62 * Class Methods
63 */
64static void XawTipClassInitialize(void);
65static void XawTipInitialize(Widget, Widget, ArgList, Cardinal*);
66static void XawTipDestroy(Widget);
67static void XawTipExpose(Widget, XEvent*, Region);
68static void XawTipRealize(Widget, Mask*, XSetWindowAttributes*);
69static Boolean XawTipSetValues(Widget, Widget, Widget, ArgList, Cardinal*);
70
71/*
72 * Prototypes
73 */
74static void TipEventHandler(Widget, XtPointer, XEvent*, Boolean*);
75static void TipShellEventHandler(Widget, XtPointer, XEvent*, Boolean*);
76static XawTipInfo *CreateTipInfo(Widget);
77static XawTipInfo *FindTipInfo(Widget);
78static void ResetTip(XawTipInfo*, Boolint);
79static void TipTimeoutCallback(XtPointer, XtIntervalId*);
80static void TipLayout(XawTipInfo*);
81static void TipPosition(XawTipInfo*);
82
83/*
84 * Initialization
85 */
86#define offset(field) XtOffsetOf(TipRec, tip.field)__builtin_offsetof(TipRec, tip.field)
87static XtResource resources[] = {
88 {
89 XtNforeground((char*)&XtStrings[214]),
90 XtCForeground((char*)&XtStrings[1022]),
91 XtRPixel((char*)&XtStrings[1754]),
92 sizeof(Pixel),
93 offset(foreground),
94 XtRString((char*)&XtStrings[1797]),
95 XtDefaultForeground"XtDefaultForeground",
96 },
97 {
98 XtNfont((char*)&XtStrings[199]),
99 XtCFont((char*)&XtStrings[1017]),
100 XtRFontStruct((char*)&XtStrings[1666]),
101 sizeof(XFontStruct*),
102 offset(font),
103 XtRString((char*)&XtStrings[1797]),
104 XtDefaultFont"XtDefaultFont"
105 },
106 {
107 XtNfontSet((char*)&XtStrings[2018]),
108 XtCFontSet((char*)&XtStrings[2034]),
109 XtRFontSet((char*)&XtStrings[2026]),
110 sizeof(XFontSet),
111 offset(fontset),
112 XtRString((char*)&XtStrings[1797]),
113 XtDefaultFontSet"XtDefaultFontSet"
114 },
115 {
116 XtNtopMargin"topMargin",
117 XtCVerticalMargins"VerticalMargins",
118 XtRDimension((char*)&XtStrings[1618]),
119 sizeof(Dimension),
120 offset(top_margin),
121 XtRImmediate((char*)&XtStrings[1695]),
122 (XtPointer)2
123 },
124 {
125 XtNbottomMargin"bottomMargin",
126 XtCVerticalMargins"VerticalMargins",
127 XtRDimension((char*)&XtStrings[1618]),
128 sizeof(Dimension),
129 offset(bottom_margin),
130 XtRImmediate((char*)&XtStrings[1695]),
131 (XtPointer)2
132 },
133 {
134 XtNleftMargin"leftMargin",
135 XtCHorizontalMargins"HorizontalMargins",
136 XtRDimension((char*)&XtStrings[1618]),
137 sizeof(Dimension),
138 offset(left_margin),
139 XtRImmediate((char*)&XtStrings[1695]),
140 (XtPointer)6
141 },
142 {
143 XtNrightMargin"rightMargin",
144 XtCHorizontalMargins"HorizontalMargins",
145 XtRDimension((char*)&XtStrings[1618]),
146 sizeof(Dimension),
147 offset(right_margin),
148 XtRImmediate((char*)&XtStrings[1695]),
149 (XtPointer)6
150 },
151 {
152 XtNbackingStore"backingStore",
153 XtCBackingStore"BackingStore",
154 XtRBackingStore"BackingStore",
155 sizeof(int),
156 offset(backing_store),
157 XtRImmediate((char*)&XtStrings[1695]),
158 (XtPointer)(Always2 + WhenMapped1 + NotUseful0)
159 },
160 {
161 XtNtimeout"timeout",
162 XtCTimeout"Timeout",
163 XtRInt((char*)&XtStrings[1718]),
164 sizeof(int),
165 offset(timeout),
166 XtRImmediate((char*)&XtStrings[1695]),
167 (XtPointer)500
168 },
169 {
170 XawNdisplayList"displayList",
171 XawCDisplayList"DisplayList",
172 XawRDisplayList"XawDisplayList",
173 sizeof(XawDisplayList*),
174 offset(display_list),
175 XtRImmediate((char*)&XtStrings[1695]),
176 NULL((void*)0)
177 },
178};
179#undef offset
180
181TipClassRec tipClassRec = {
182 /* core */
183 {
184 (WidgetClass)&widgetClassRec, /* superclass */
185 "Tip", /* class_name */
186 sizeof(TipRec), /* widget_size */
187 XawTipClassInitialize, /* class_initialize */
188 NULL((void*)0), /* class_part_initialize */
189 False0, /* class_inited */
190 XawTipInitialize, /* initialize */
191 NULL((void*)0), /* initialize_hook */
192 XawTipRealize, /* realize */
193 NULL((void*)0), /* actions */
194 0, /* num_actions */
195 resources, /* resources */
196 XtNumber(resources)((Cardinal) (sizeof(resources) / sizeof(resources[0]))), /* num_resources */
197 NULLQUARK((XrmQuark) 0), /* xrm_class */
198 True1, /* compress_motion */
199 True1, /* compress_exposure */
200 True1, /* compress_enterleave */
201 False0, /* visible_interest */
202 XawTipDestroy, /* destroy */
203 NULL((void*)0), /* resize */
204 XawTipExpose, /* expose */
205 XawTipSetValues, /* set_values */
206 NULL((void*)0), /* set_values_hook */
207 XtInheritSetValuesAlmost((XtAlmostProc) _XtInherit), /* set_values_almost */
208 NULL((void*)0), /* get_values_hook */
209 NULL((void*)0), /* accept_focus */
210 XtVersion(11 * 1000 + 6), /* version */
211 NULL((void*)0), /* callback_private */
212 NULL((void*)0), /* tm_table */
213 XtInheritQueryGeometry((XtGeometryHandler) _XtInherit), /* query_geometry */
214 XtInheritDisplayAccelerator((XtStringProc) _XtInherit), /* display_accelerator */
215 NULL((void*)0), /* extension */
216 },
217 /* tip */
218 {
219 NULL((void*)0), /* extension */
220 },
221};
222
223WidgetClass tipWidgetClass = (WidgetClass)&tipClassRec;
224
225static XawTipInfo *first_tip;
226
227/*
228 * Implementation
229 */
230static void
231XawTipClassInitialize(void)
232{
233 XawInitializeWidgetSet();
234 XtAddConverter(XtRString((char*)&XtStrings[1797]), XtRBackingStore"BackingStore", XmuCvtStringToBackingStore,
235 NULL((void*)0), 0);
236 XtSetTypeConverter(XtRBackingStore"BackingStore", XtRString((char*)&XtStrings[1797]), XmuCvtBackingStoreToString,
237 NULL((void*)0), 0, XtCacheNone0x001, NULL((void*)0));
238}
239
240/*ARGSUSED*/
241static void
242XawTipInitialize(Widget req, Widget w, ArgList args, Cardinal *num_args)
243{
244 TipWidget tip = (TipWidget)w;
245 XGCValues values;
246
247 if (!tip->tip.font) XtError("Aborting: no font found\n");
1
Taking true branch
248 if (tip->tip.international && !tip->tip.fontset)
2
Taking false branch
249 XtError("Aborting: no fontset found\n");
250
251 tip->tip.timer = 0;
252
253 values.foreground = tip->tip.foreground;
254 values.background = tip->core.background_pixel;
255 values.font = tip->tip.font->fid;
3
Access to field 'fid' results in a dereference of a null pointer (loaded from field 'font')
256 values.graphics_exposures = False0;
257
258 tip->tip.gc = XtAllocateGC(w, 0, GCForeground(1L<<2) | GCBackground(1L<<3) | GCFont(1L<<14) |
259 GCGraphicsExposures(1L<<16), &values, GCFont(1L<<14), 0);
260}
261
262static void
263XawTipDestroy(Widget w)
264{
265 XawTipInfo *info = FindTipInfo(w);
266 TipWidget tip = (TipWidget)w;
267
268 if (tip->tip.timer)
269 XtRemoveTimeOut(tip->tip.timer);
270
271 XtReleaseGC(w, tip->tip.gc);
272
273 XtRemoveEventHandler(XtParent(w)((w)->core.parent), KeyPressMask(1L<<0), False0, TipShellEventHandler,
274 (XtPointer)NULL((void*)0));
275 if (info == first_tip)
276 first_tip = first_tip->next;
277 else {
278 XawTipInfo *p = first_tip;
279
280 while (p && p->next != info)
281 p = p->next;
282 if (p)
283 p->next = info->next;
284 }
285 XtFree((char*)info);
286}
287
288static void
289XawTipRealize(Widget w, Mask *mask, XSetWindowAttributes *attr)
290{
291 TipWidget tip = (TipWidget)w;
292
293 if (tip->tip.backing_store == Always2 ||
294 tip->tip.backing_store == NotUseful0 ||
295 tip->tip.backing_store == WhenMapped1) {
296 *mask |= CWBackingStore(1L<<6);
297 attr->backing_store = tip->tip.backing_store;
298 }
299 else
300 *mask &= ~CWBackingStore(1L<<6);
301 *mask |= CWOverrideRedirect(1L<<9);
302 attr->override_redirect = True1;
303
304 XtWindow(w)((w)->core.window) = XCreateWindow(DisplayOfScreen(XtScreen(w))((((w)->core.screen))->display),
305 RootWindowOfScreen(XtScreen(w))((((w)->core.screen))->root),
306 XtX(w)(((RectObj)w)->rectangle.x), XtY(w)(((RectObj)w)->rectangle.y),
307 XtWidth(w)(((RectObj)w)->rectangle.width) ? XtWidth(w)(((RectObj)w)->rectangle.width) : 1,
308 XtHeight(w)(((RectObj)w)->rectangle.height) ? XtHeight(w)(((RectObj)w)->rectangle.height) : 1,
309 XtBorderWidth(w)(((RectObj)w)->rectangle.border_width),
310 DefaultDepthOfScreen(XtScreen(w))((((w)->core.screen))->root_depth),
311 InputOutput1,
312 (Visual *)CopyFromParent0L,
313 *mask, attr);
314}
315
316static void
317XawTipExpose(Widget w, XEvent *event, Region region)
318{
319 TipWidget tip = (TipWidget)w;
320 GC gc = tip->tip.gc;
321 char *nl, *label = tip->tip.label;
322 Position y = tip->tip.top_margin + tip->tip.font->max_bounds.ascent;
323 int len;
324
325 if (tip->tip.display_list)
326 XawRunDisplayList(w, tip->tip.display_list, event, region);
327
328 if (tip->tip.international == True1) {
329 Position ksy = tip->tip.top_margin;
330 XFontSetExtents *ext = XExtentsOfFontSet(tip->tip.fontset);
331
332 ksy += XawAbs(ext->max_ink_extent.y)((ext->max_ink_extent.y) < 0 ? -(ext->max_ink_extent
.y) : (ext->max_ink_extent.y));
333
334 while ((nl = index(label, '\n')(strchr((label),('\n')))) != NULL((void*)0)) {
335 XmbDrawString(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), tip->tip.fontset,
336 gc, tip->tip.left_margin, ksy, label,
337 (int)(nl - label));
338 ksy += ext->max_ink_extent.height;
339 label = nl + 1;
340 }
341 len = strlen(label);
342 if (len)
343 XmbDrawString(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), tip->tip.fontset, gc,
344 tip->tip.left_margin, ksy, label, len);
345 }
346 else {
347 while ((nl = index(label, '\n')(strchr((label),('\n')))) != NULL((void*)0)) {
348 if (tip->tip.encoding)
349 XDrawString16(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), gc,
350 tip->tip.left_margin, y,
351 (XChar2b*)label, (int)(nl - label) >> 1);
352 else
353 XDrawString(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), gc,
354 tip->tip.left_margin, y, label, (int)(nl - label));
355 y += tip->tip.font->max_bounds.ascent +
356 tip->tip.font->max_bounds.descent;
357 label = nl + 1;
358 }
359 len = strlen(label);
360 if (len) {
361 if (tip->tip.encoding)
362 XDrawString16(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), gc,
363 tip->tip.left_margin, y, (XChar2b*)label, len >> 1);
364 else
365 XDrawString(XtDisplay(w)(((w)->core.screen)->display), XtWindow(w)((w)->core.window), gc,
366 tip->tip.left_margin, y, label, len);
367 }
368 }
369}
370
371/*ARGSUSED*/
372static Boolean
373XawTipSetValues(Widget current, Widget request, Widget cnew,
374 ArgList args, Cardinal *num_args)
375{
376 TipWidget curtip = (TipWidget)current;
377 TipWidget newtip = (TipWidget)cnew;
378 Boolean redisplay = False0;
379
380 if (curtip->tip.font->fid != newtip->tip.font->fid ||
381 curtip->tip.foreground != newtip->tip.foreground) {
382 XGCValues values;
383
384 values.foreground = newtip->tip.foreground;
385 values.background = newtip->core.background_pixel;
386 values.font = newtip->tip.font->fid;
387 values.graphics_exposures = False0;
388 XtReleaseGC(cnew, curtip->tip.gc);
389 newtip->tip.gc = XtAllocateGC(cnew, 0, GCForeground(1L<<2) | GCBackground(1L<<3) |
390 GCFont(1L<<14) | GCGraphicsExposures(1L<<16), &values,
391 GCFont(1L<<14), 0);
392 redisplay = True1;
393 }
394 if (curtip->tip.display_list != newtip->tip.display_list)
395 redisplay = True1;
396
397 return (redisplay);
398}
399
400static void
401TipLayout(XawTipInfo *info)
402{
403 XFontStruct *fs = info->tip->tip.font;
404 int width = 0, height;
405 char *nl, *label = info->tip->tip.label;
406
407 if (info->tip->tip.international == True1) {
408 XFontSet fset = info->tip->tip.fontset;
409 XFontSetExtents *ext = XExtentsOfFontSet(fset);
410
411 height = ext->max_ink_extent.height;
412 if ((nl = index(label, '\n')(strchr((label),('\n')))) != NULL((void*)0)) {
413 /*CONSTCOND*/
414 while (True1) {
415 int w = XmbTextEscapement(fset, label, (int)(nl - label));
416
417 if (w > width)
418 width = w;
419 if (*nl == '\0')
420 break;
421 label = nl + 1;
422 if (*label)
423 height += ext->max_ink_extent.height;
424 if ((nl = index(label, '\n')(strchr((label),('\n')))) == NULL((void*)0))
425 nl = index(label, '\0')(strchr((label),('\0')));
426 }
427 }
428 else
429 width = XmbTextEscapement(fset, label, strlen(label));
430 }
431 else {
432 height = fs->max_bounds.ascent + fs->max_bounds.descent;
433 if ((nl = index(label, '\n')(strchr((label),('\n')))) != NULL((void*)0)) {
434 /*CONSTCOND*/
435 while (True1) {
436 int w = info->tip->tip.encoding ?
437 XTextWidth16(fs, (XChar2b*)label, (int)(nl - label) >> 1) :
438 XTextWidth(fs, label, (int)(nl - label));
439 if (w > width)
440 width = w;
441 if (*nl == '\0')
442 break;
443 label = nl + 1;
444 if (*label)
445 height += fs->max_bounds.ascent + fs->max_bounds.descent;
446 if ((nl = index(label, '\n')(strchr((label),('\n')))) == NULL((void*)0))
447 nl = index(label, '\0')(strchr((label),('\0')));
448 }
449 }
450 else
451 width = info->tip->tip.encoding ?
452 XTextWidth16(fs, (XChar2b*)label, strlen(label) >> 1) :
453 XTextWidth(fs, label, strlen(label));
454 }
455 XtWidth(info->tip)(((RectObj)info->tip)->rectangle.width) = width + info->tip->tip.left_margin +
456 info->tip->tip.right_margin;
457 XtHeight(info->tip)(((RectObj)info->tip)->rectangle.height) = height + info->tip->tip.top_margin +
458 info->tip->tip.bottom_margin;
459}
460
461#define DEFAULT_TIP_Y_OFFSET12 12
462static void
463TipPosition(XawTipInfo *info)
464{
465 Window r, c;
466 int rx, ry, wx, wy;
467 unsigned mask;
468 Position x, y;
469
470 XQueryPointer(XtDisplay((Widget)info->tip)((((Widget)info->tip)->core.screen)->display), XtWindow((Widget)info->tip)(((Widget)info->tip)->core.window),
471 &r, &c, &rx, &ry, &wx, &wy, &mask);
472 x = rx - (XtWidth(info->tip)(((RectObj)info->tip)->rectangle.width) >> 1);
473 y = ry + DEFAULT_TIP_Y_OFFSET12;
474
475 if (x >= 0) {
476 int scr_width = WidthOfScreen(XtScreen(info->tip))((((info->tip)->core.screen))->width);
477
478 if (x + XtWidth(info->tip)(((RectObj)info->tip)->rectangle.width) + XtBorderWidth(info->tip)(((RectObj)info->tip)->rectangle.border_width) > scr_width)
479 x = scr_width - XtWidth(info->tip)(((RectObj)info->tip)->rectangle.width) - XtBorderWidth(info->tip)(((RectObj)info->tip)->rectangle.border_width);
480 }
481 if (x < 0)
482 x = 0;
483 if (y >= 0) {
484 int scr_height = HeightOfScreen(XtScreen(info->tip))((((info->tip)->core.screen))->height);
485
486 if (y + XtHeight(info->tip)(((RectObj)info->tip)->rectangle.height) + XtBorderWidth(info->tip)(((RectObj)info->tip)->rectangle.border_width) > scr_height)
487 y -= XtHeight(info->tip)(((RectObj)info->tip)->rectangle.height) + XtBorderWidth(info->tip)(((RectObj)info->tip)->rectangle.border_width) +
488 (DEFAULT_TIP_Y_OFFSET12 << 1);
489 }
490 if (y < 0)
491 y = 0;
492
493 XMoveResizeWindow(XtDisplay(info->tip)(((info->tip)->core.screen)->display), XtWindow(info->tip)((info->tip)->core.window),
494 (int)(XtX(info->tip)(((RectObj)info->tip)->rectangle.x) = x), (int)(XtY(info->tip)(((RectObj)info->tip)->rectangle.y) = y),
495 (unsigned)XtWidth(info->tip)(((RectObj)info->tip)->rectangle.width), (unsigned)XtHeight(info->tip)(((RectObj)info->tip)->rectangle.height));
496}
497
498static XawTipInfo *
499CreateTipInfo(Widget w)
500{
501 XawTipInfo *info = XtNew(XawTipInfo)((XawTipInfo *) XtMalloc((unsigned) sizeof(XawTipInfo)));
502 Widget shell = w;
503
504 info->screen = XtScreen(w)((w)->core.screen);
505
506 while (XtParent(shell)((shell)->core.parent))
507 shell = XtParent(shell)((shell)->core.parent);
508
509 info->tip = (TipWidget)XtCreateWidget("tip", tipWidgetClass, shell, NULL((void*)0), 0);
510 XtRealizeWidget((Widget)info->tip);
511 info->widget = NULL((void*)0);
512 info->mapped = False0;
513 info->next = NULL((void*)0);
514 XtAddEventHandler(shell, KeyPressMask(1L<<0), False0, TipShellEventHandler,
515 (XtPointer)NULL((void*)0));
516
517 return (info);
518}
519
520static XawTipInfo *
521FindTipInfo(Widget w)
522{
523 XawTipInfo *ptip, *tip = first_tip;
524 Screen *screen = XtScreenOfObject(w);
525
526 if (tip == NULL((void*)0))
527 return (first_tip = tip = CreateTipInfo(w));
528
529 for (ptip = tip; tip; ptip = tip, tip = tip->next)
530 if (tip->screen == screen)
531 return (tip);
532
533 return (ptip->next = CreateTipInfo(w));
534}
535
536static void
537ResetTip(XawTipInfo *info, Boolint add_timeout)
538{
539 if (info->tip->tip.timer) {
540 XtRemoveTimeOut(info->tip->tip.timer);
541 info->tip->tip.timer = 0;
542 }
543 if (info->mapped) {
544 XtRemoveGrab(XtParent((Widget)info->tip)(((Widget)info->tip)->core.parent));
545 XUnmapWindow(XtDisplay((Widget)info->tip)((((Widget)info->tip)->core.screen)->display), XtWindow((Widget)info->tip)(((Widget)info->tip)->core.window));
546 info->mapped = False0;
547 }
548 if (add_timeout) {
549 info->tip->tip.timer =
550 XtAppAddTimeOut(XtWidgetToApplicationContext((Widget)info->tip),
551 info->tip->tip.timeout, TipTimeoutCallback,
552 (XtPointer)info);
553 }
554}
555
556static void
557TipTimeoutCallback(XtPointer closure, XtIntervalId *id)
558{
559 XawTipInfo *info = (XawTipInfo*)closure;
560 Arg args[3];
561
562 info->tip->tip.label = NULL((void*)0);
563 info->tip->tip.international = False0;
564 info->tip->tip.encoding = 0;
565 info->tip->tip.timer = 0;
566 XtSetArg(args[0], XtNtip, &info->tip->tip.label)((void)( (args[0]).name = ("tip"), (args[0]).value = (XtArgVal
)(&info->tip->tip.label) ));
567 XtSetArg(args[1], XtNinternational, &info->tip->tip.international)((void)( (args[1]).name = ("international"), (args[1]).value =
(XtArgVal)(&info->tip->tip.international) ));
568 XtSetArg(args[2], XtNencoding, &info->tip->tip.encoding)((void)( (args[2]).name = ("encoding"), (args[2]).value = (XtArgVal
)(&info->tip->tip.encoding) ));
569 XtGetValues(info->widget, args, 3);
570
571 if (info->tip->tip.label) {
572 TipLayout(info);
573 TipPosition(info);
574 XMapRaised(XtDisplay((Widget)info->tip)((((Widget)info->tip)->core.screen)->display), XtWindow((Widget)info->tip)(((Widget)info->tip)->core.window));
575 XtAddGrab(XtParent((Widget)info->tip)(((Widget)info->tip)->core.parent), True1, True1);
576 info->mapped = True1;
577 }
578}
579
580/*ARGSUSED*/
581static void
582TipShellEventHandler(Widget w, XtPointer client_data, XEvent *event,
583 Boolean *continue_to_dispatch)
584{
585 ResetTip(FindTipInfo(w), False0);
586}
587
588/*ARGSUSED*/
589static void
590TipEventHandler(Widget w, XtPointer client_data, XEvent *event,
591 Boolean *continue_to_dispatch)
592{
593 XawTipInfo *info = FindTipInfo(w);
594 Boolean add_timeout;
595
596 if (info->widget != w) {
597 ResetTip(info, False0);
598 info->widget = w;
599 }
600
601 switch (event->type) {
602 case EnterNotify7:
603 add_timeout = True1;
604 break;
605 case MotionNotify6:
606 /* If any button is pressed, timer is 0 */
607 if (info->mapped)
608 return;
609 add_timeout = info->tip->tip.timer != 0;
610 break;
611 default:
612 add_timeout = False0;
613 break;
614 }
615 ResetTip(info, add_timeout);
616}
617
618/*
619 * Public routines
620 */
621void
622XawTipEnable(Widget w)
623{
624 XtAddEventHandler(w, TIP_EVENT_MASK((1L<<2) | (1L<<3) | (1L<<6) | (1L<<13
) | (1L<<0) | (1L<<1) | (1L<<4) | (1L<<
5)), False0, TipEventHandler,
625 (XtPointer)NULL((void*)0));
626}
627
628void
629XawTipDisable(Widget w)
630{
631 XawTipInfo *info = FindTipInfo(w);
632
633 XtRemoveEventHandler(w, TIP_EVENT_MASK((1L<<2) | (1L<<3) | (1L<<6) | (1L<<13
) | (1L<<0) | (1L<<1) | (1L<<4) | (1L<<
5)), False0, TipEventHandler,
634 (XtPointer)NULL((void*)0));
635 if (info->widget == w)
636 ResetTip(info, False0);
637}