428
+ − 1 /* External shell widget.
+ − 2 Copyright (C) 1993, 1994 Sun Microsystems, Inc.
+ − 3
+ − 4 This library is free software; you can redistribute it and/or
+ − 5 modify it under the terms of the GNU Library General Public
+ − 6 License as published by the Free Software Foundation; either
+ − 7 version 2 of the License, or (at your option) any later version.
+ − 8
+ − 9 This library is distributed in the hope that it will be useful,
+ − 10 but WITHOUT ANY WARRANTY; without even the implied warranty of
+ − 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ − 12 Library General Public License for more details.
+ − 13
+ − 14 You should have received a copy of the GNU Library General Public
+ − 15 License along with this library; if not, write to
+ − 16 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 17 Boston, MA 02111-1307, USA. */
+ − 18
+ − 19 /* Synched up with: Not in FSF. */
+ − 20
+ − 21 /* Written by Ben Wing, September 1993. */
+ − 22
+ − 23 /* This is a special Shell that is designed to use an externally-
+ − 24 provided window created by someone else (possibly another process).
+ − 25 That other window should have an associated widget of class
+ − 26 ExternalClient. The two widgets communicate with each other using
+ − 27 ClientMessage events and properties on the external window.
+ − 28
+ − 29 Ideally this feature should be independent of Emacs. Unfortunately
+ − 30 there are lots and lots of specifics that need to be dealt with
+ − 31 for this to work properly, and some of them can't conveniently
+ − 32 be handled within the widget's methods. Some day the code may
+ − 33 be rewritten so that the embedded-widget feature can be used by
+ − 34 any application, with appropriate entry points that are called
+ − 35 at specific points within the application.
+ − 36
+ − 37 This feature is similar to the OLE (Object Linking & Embedding)
+ − 38 feature provided by MS Windows.
+ − 39 */
+ − 40
+ − 41 #ifdef emacs
+ − 42
+ − 43 #include <config.h>
+ − 44
+ − 45 #ifndef EXTERNAL_WIDGET
+ − 46 ERROR! This ought not be getting compiled if EXTERNAL_WIDGET is undefined
+ − 47 #endif
+ − 48
+ − 49 #endif /* emacs */
+ − 50
+ − 51 #include <stdio.h>
+ − 52 #include <string.h>
+ − 53 #include <X11/StringDefs.h>
+ − 54 #include "xintrinsicp.h"
+ − 55 #include <X11/Shell.h>
+ − 56 #include <X11/ShellP.h>
+ − 57 #include <X11/Vendor.h>
+ − 58 #include <X11/VendorP.h>
2299
+ − 59 #include "compiler.h"
428
+ − 60 #include "ExternalShellP.h"
+ − 61 #include "extw-Xt.h"
+ − 62
+ − 63 #ifdef emacs
+ − 64 extern void emacs_Xt_handle_focus_event (XEvent *event);
+ − 65 #endif
+ − 66
+ − 67 /* Communication between this shell and the client widget:
+ − 68
+ − 69 Communication is through ClientMessage events with message_type
+ − 70 EXTW_NOTIFY and format 32. Both the shell and the client widget
+ − 71 communicate with each other by sending the message to the same
+ − 72 window (the "external window" below), and the data.l[0] value is
+ − 73 used to determine who sent the message.
+ − 74
+ − 75 The data is formatted as follows:
+ − 76
+ − 77 data.l[0] = who sent this message: external_shell_send (0) or
+ − 78 external_client_send (1)
+ − 79 data.l[1] = message type (see enum en_extw_notify below)
+ − 80 data.l[2-4] = data associated with this message
+ − 81
+ − 82 EventHandler() handles messages from the other side.
+ − 83
+ − 84 extw_send_notify_3() sends a message to the other side.
+ − 85
+ − 86 extw_send_geometry_value() is used when an XtWidgetGeometry structure
+ − 87 needs to be sent. This is too much data to fit into a
+ − 88 ClientMessage, so the data is stored in a property and then
+ − 89 extw_send_notify_3() is called.
+ − 90
+ − 91 extw_get_geometry_value() receives an XtWidgetGeometry structure from a
+ − 92 property.
+ − 93
+ − 94 extw_wait_for_response() is used when a response to a sent message
+ − 95 is expected. It looks for a matching event within a
+ − 96 particular timeout.
+ − 97
+ − 98 The particular message types are as follows:
+ − 99
+ − 100 1) extw_notify_init (event_window, event_mask)
+ − 101
+ − 102 This is sent from the shell to the client after the shell realizes
+ − 103 its EmacsFrame widget on the client's "external window". This
+ − 104 tells the client that it should start passing along events of the
+ − 105 types specified in event_mask. event_window specifies the window
+ − 106 of the EmacsFrame widget, which is a child of the client's
+ − 107 external window.
+ − 108
+ − 109 extw_notify_init (client_type)
+ − 110
+ − 111 When the client receives an extw_notify_init message from the
+ − 112 shell, it sends back a message of the same sort specifying the type
+ − 113 of the toolkit used by the client (Motif, generic Xt, or Xlib).
+ − 114
+ − 115 2) extw_notify_end ()
+ − 116
+ − 117 This is sent from the shell to the client when the shell's
+ − 118 EmacsFrame widget is destroyed, and tells the client to stop
+ − 119 passing events along.
+ − 120
+ − 121 3) extw_notify_qg (result)
+ − 122
+ − 123 This is sent from the client to the shell when a QueryGeometry
+ − 124 request is received on the client. The XtWidgetGeometry structure
+ − 125 specified in the QueryGeometry request is passed on in the
+ − 126 EXTW_QUERY_GEOMETRY property (of type EXTW_WIDGET_GEOMETRY) on the
+ − 127 external window. result is unused.
+ − 128
+ − 129 In response, the shell passes the QueryGeometry request down the
+ − 130 widget tree, and when a response is received, sends a message of
+ − 131 type extw_notify_qg back to the client, with result specifying the
+ − 132 GeometryResult value. If this value is XtGeometryAlmost, the
+ − 133 returned XtWidgetGeometry structure is stored into the same property
+ − 134 as above. [BPW is there a possible race condition here?]
+ − 135
+ − 136 4) extw_notify_gm (result)
+ − 137
+ − 138 A very similar procedure to that for extw_notify_qg is followed
+ − 139 when the shell's RootGeometryManager method is called, indicating
+ − 140 that a child widget wishes to change the shell's geometry. The
+ − 141 XtWidgetGeometry structure is stored in the EXTW_GEOMETRY_MANAGER
+ − 142 property.
+ − 143
+ − 144 5) extw_notify_focus_in (), extw_notify_focus_out ()
+ − 145
+ − 146 These are sent from the client to the shell when the client gains
+ − 147 or loses the keyboard focus. It is done this way because Xt
+ − 148 maintains its own concept of keyboard focus and only the client
+ − 149 knows this information.
+ − 150 */
+ − 151
+ − 152 #define NOTIFY(w, type, l0, l1, l2) \
+ − 153 extw_send_notify_3(XtDisplay((Widget)(w)),\
+ − 154 (w)->externalShell.external_window, type, l0, l1, l2)
+ − 155
3025
+ − 156 static void ExternalShellInitialize (Widget req, Widget new_, ArgList args,
428
+ − 157 Cardinal *num_args);
+ − 158 static void ExternalShellRealize (Widget wid, Mask *vmask, XSetWindowAttributes
+ − 159 *attr);
+ − 160 static void ExternalShellDestroy (Widget w);
+ − 161 static void ChangeManaged (Widget wid);
2108
+ − 162 static XtGeometryResult
+ − 163 ExternalShellRootGeometryManager (Widget gw, XtWidgetGeometry *request,
+ − 164 XtWidgetGeometry *reply);
428
+ − 165 static void EventHandler (Widget wid, XtPointer closure, XEvent *event,
+ − 166 Boolean *continue_to_dispatch);
+ − 167
+ − 168 #ifndef DEFAULT_WM_TIMEOUT
+ − 169 # define DEFAULT_WM_TIMEOUT 5000
+ − 170 #endif
+ − 171
+ − 172 void ExternalShellUnrealize (Widget w);
+ − 173
+ − 174 static XtResource resources[] = {
+ − 175 #define offset(field) XtOffset(ExternalShellWidget, externalShell.field)
440
+ − 176 { XtNwindow, XtCWindow,
+ − 177 XtRWindow, sizeof (Window),
+ − 178 offset (external_window), XtRImmediate, (XtPointer)0 },
+ − 179 { XtNclientTimeout, XtCClientTimeout,
+ − 180 XtRInt, sizeof (int),
+ − 181 offset(client_timeout), XtRImmediate,(XtPointer)DEFAULT_WM_TIMEOUT },
+ − 182 { XtNdeadClient, XtCDeadClient,
+ − 183 XtRBoolean, sizeof (Boolean),
+ − 184 offset(dead_client), XtRImmediate, (XtPointer)False },
428
+ − 185 };
+ − 186
+ − 187 static CompositeClassExtensionRec compositeClassExtRec = {
+ − 188 NULL,
+ − 189 NULLQUARK,
+ − 190 XtCompositeExtensionVersion,
440
+ − 191 sizeof (CompositeClassExtensionRec),
428
+ − 192 TRUE,
+ − 193 };
+ − 194
+ − 195 static ShellClassExtensionRec shellClassExtRec = {
+ − 196 NULL,
+ − 197 NULLQUARK,
+ − 198 XtShellExtensionVersion,
440
+ − 199 sizeof (ShellClassExtensionRec),
428
+ − 200 ExternalShellRootGeometryManager
+ − 201 };
+ − 202
+ − 203 ExternalShellClassRec externalShellClassRec = {
+ − 204 { /*
+ − 205 * core_class fields
+ − 206 */
+ − 207 /* superclass */ (WidgetClass) &shellClassRec,
+ − 208 /* class_name */ "ExternalShell",
440
+ − 209 /* size */ sizeof (ExternalShellRec),
428
+ − 210 /* Class Initializer */ NULL,
+ − 211 /* class_part_initialize*/ NULL, /* XtInheritClassPartInitialize, */
+ − 212 /* Class init'ed ? */ FALSE,
+ − 213 /* initialize */ ExternalShellInitialize,
+ − 214 /* initialize_notify */ NULL,
+ − 215 /* realize */ ExternalShellRealize,
+ − 216 /* actions */ NULL,
+ − 217 /* num_actions */ 0,
+ − 218 /* resources */ resources,
+ − 219 /* resource_count */ XtNumber (resources),
+ − 220 /* xrm_class */ NULLQUARK,
+ − 221 /* compress_motion */ FALSE,
+ − 222 /* compress_exposure */ TRUE,
+ − 223 /* compress_enterleave*/ FALSE,
+ − 224 /* visible_interest */ TRUE,
+ − 225 /* destroy */ ExternalShellDestroy, /* XtInheritDestroy, */
+ − 226 /* resize */ XtInheritResize,
+ − 227 /* expose */ NULL,
+ − 228 /* set_values */ NULL, /* XtInheritSetValues, */
440
+ − 229 /* set_values_hook */ NULL,
+ − 230 /* set_values_almost */ XtInheritSetValuesAlmost,
+ − 231 /* get_values_hook */ NULL,
428
+ − 232 /* accept_focus */ NULL,
+ − 233 /* intrinsics version */ XtVersion,
+ − 234 /* callback offsets */ NULL,
+ − 235 /* tm_table */ NULL,
+ − 236 /* query_geometry */ NULL,
+ − 237 /* display_accelerator*/ NULL,
+ − 238 /* extension */ NULL
+ − 239 },{ /* Composite */
+ − 240 /* geometry_manager */ XtInheritGeometryManager,
+ − 241 /* change_managed */ ChangeManaged, /* XtInheritChangeManaged */
+ − 242 /* insert_child */ XtInheritInsertChild,
+ − 243 /* delete_child */ XtInheritDeleteChild,
+ − 244 /* extension */ (XtPointer)&compositeClassExtRec
+ − 245 },{ /* Shell */
+ − 246 /* extension */ (XtPointer)&shellClassExtRec
+ − 247 },{ /* ExternalShell */
+ − 248 0
+ − 249 }
+ − 250 };
+ − 251
+ − 252 WidgetClass externalShellWidgetClass = (WidgetClass) &externalShellClassRec;
+ − 253
+ − 254 static void
3025
+ − 255 ExternalShellInitialize (Widget req, Widget new_, ArgList UNUSED (args),
2286
+ − 256 Cardinal *UNUSED (num_args))
428
+ − 257 {
3025
+ − 258 XtAddEventHandler(new_, 0,
428
+ − 259 TRUE, EventHandler, (XtPointer) NULL);
+ − 260 extw_initialize_atoms(XtDisplay(req));
+ − 261 extw_which_side = extw_shell_send;
+ − 262 }
+ − 263
+ − 264 static Widget
+ − 265 find_managed_child (CompositeWidget w)
+ − 266 {
+ − 267 int i;
+ − 268 Widget *childP = w->composite.children;
+ − 269
+ − 270 for (i = w->composite.num_children; i; i--, childP++)
+ − 271 if (XtIsWidget(*childP) && XtIsManaged(*childP))
+ − 272 return *childP;
+ − 273 return NULL;
+ − 274 }
+ − 275
+ − 276 #ifndef XtCXtToolkitError
+ − 277 # define XtCXtToolkitError "XtToolkitError"
+ − 278 #endif
+ − 279
2286
+ − 280 static void EventHandler (Widget wid, XtPointer UNUSED (closure),
2108
+ − 281 XEvent *event,
2286
+ − 282 Boolean *UNUSED (continue_to_dispatch))
428
+ − 283 {
+ − 284 ExternalShellWidget w = (ExternalShellWidget) wid;
+ − 285
+ − 286 if(w->core.window != event->xany.window) {
+ − 287 XtAppErrorMsg(XtWidgetToApplicationContext(wid),
+ − 288 "invalidWindow","eventHandler",XtCXtToolkitError,
+ − 289 "Event with wrong window",
+ − 290 (String *)NULL, (Cardinal *)NULL);
+ − 291 return;
+ − 292 }
+ − 293
+ − 294 if (event->type == ClientMessage &&
+ − 295 event->xclient.data.l[0] == extw_client_send &&
+ − 296 event->xclient.message_type == a_EXTW_NOTIFY)
+ − 297 switch (event->xclient.data.l[1]) {
+ − 298
+ − 299 case extw_notify_gm:
+ − 300 /* client is alive again. */
+ − 301 w->externalShell.dead_client = False;
+ − 302 break;
+ − 303
+ − 304 case extw_notify_qg: {
+ − 305 XtWidgetGeometry xwg, xwg_return;
+ − 306 XtGeometryResult result;
+ − 307 Widget child = find_managed_child((CompositeWidget) w);
+ − 308
+ − 309 if (child) {
+ − 310 extw_get_geometry_value(XtDisplay(wid), XtWindow(wid),
+ − 311 a_EXTW_QUERY_GEOMETRY, &xwg);
+ − 312 result = XtQueryGeometry(child, &xwg, &xwg_return);
+ − 313 } else
+ − 314 result = XtGeometryYes;
+ − 315
+ − 316 extw_send_geometry_value(XtDisplay(wid), XtWindow(wid),
+ − 317 a_EXTW_QUERY_GEOMETRY, extw_notify_qg,
+ − 318 result == XtGeometryAlmost ? &xwg_return :
+ − 319 NULL, result);
+ − 320 break;
+ − 321 }
+ − 322
+ − 323 case extw_notify_focus_in: {
+ − 324 XFocusChangeEvent evnt;
440
+ − 325
428
+ − 326 evnt.type = FocusIn;
+ − 327 evnt.serial = LastKnownRequestProcessed (XtDisplay (wid));
+ − 328 evnt.send_event = True;
+ − 329 evnt.display = XtDisplay (wid);
+ − 330 evnt.window = XtWindow (wid);
+ − 331 evnt.mode = NotifyNormal;
+ − 332 evnt.detail = NotifyAncestor;
+ − 333 #ifdef emacs
+ − 334 emacs_Xt_handle_focus_event ((XEvent *) &evnt);
+ − 335 #else
+ − 336 XtDispatchEvent ((XEvent *) &evnt);
+ − 337 #endif
+ − 338 break;
+ − 339 }
440
+ − 340
428
+ − 341 case extw_notify_focus_out: {
+ − 342 XFocusChangeEvent evnt;
440
+ − 343
428
+ − 344 evnt.type = FocusOut;
+ − 345 evnt.serial = LastKnownRequestProcessed (XtDisplay (wid));
+ − 346 evnt.send_event = True;
+ − 347 evnt.display = XtDisplay (wid);
+ − 348 evnt.window = XtWindow (wid);
+ − 349 evnt.mode = NotifyNormal;
+ − 350 evnt.detail = NotifyAncestor;
+ − 351 #ifdef emacs
+ − 352 emacs_Xt_handle_focus_event ((XEvent *) &evnt);
+ − 353 #else
+ − 354 XtDispatchEvent ((XEvent *) &evnt);
+ − 355 #endif
+ − 356 break;
+ − 357 }
+ − 358
+ − 359 case extw_notify_end:
+ − 360 /* frame should be destroyed. */
+ − 361 break;
+ − 362 }
+ − 363 }
+ − 364
+ − 365 /* Lifted almost entirely from GetGeometry() in Shell.c
+ − 366 */
+ − 367 static void
2286
+ − 368 GetGeometry (Widget W, Widget UNUSED (child))
428
+ − 369 {
+ − 370 ExternalShellWidget w = (ExternalShellWidget)W;
+ − 371 int x, y, win_gravity = -1, flag;
+ − 372 XSizeHints hints;
+ − 373 Window win = w->externalShell.external_window;
440
+ − 374
428
+ − 375 {
+ − 376 Window dummy_root;
+ − 377 unsigned int dummy_bd_width, dummy_depth, width, height;
440
+ − 378
428
+ − 379 /* determine the existing size of the window. */
+ − 380 XGetGeometry(XtDisplay(W), win, &dummy_root, &x, &y, &width,
+ − 381 &height, &dummy_bd_width, &dummy_depth);
+ − 382 w->core.width = width;
+ − 383 w->core.height = height;
+ − 384 }
+ − 385
+ − 386 if(w->shell.geometry != NULL) {
+ − 387 char def_geom[128];
+ − 388 int width, height;
+ − 389
+ − 390 x = w->core.x;
+ − 391 y = w->core.y;
+ − 392 width = w->core.width;
+ − 393 height = w->core.height;
+ − 394 hints.flags = 0;
+ − 395
+ − 396 sprintf( def_geom, "%dx%d+%d+%d", width, height, x, y );
+ − 397 flag = XWMGeometry( XtDisplay(W),
+ − 398 XScreenNumberOfScreen(XtScreen(W)),
+ − 399 w->shell.geometry, def_geom,
+ − 400 (unsigned int)w->core.border_width,
+ − 401 &hints, &x, &y, &width, &height,
+ − 402 &win_gravity
+ − 403 );
+ − 404 if (flag) {
+ − 405 if (flag & XValue) w->core.x = (Position)x;
+ − 406 if (flag & YValue) w->core.y = (Position)y;
+ − 407 if (flag & WidthValue) w->core.width = (Dimension)width;
+ − 408 if (flag & HeightValue) w->core.height = (Dimension)height;
+ − 409 }
+ − 410 else {
+ − 411 String params[2];
+ − 412 Cardinal num_params = 2;
+ − 413 params[0] = XtName(W);
+ − 414 params[1] = w->shell.geometry;
+ − 415 XtAppWarningMsg(XtWidgetToApplicationContext(W),
+ − 416 "badGeometry", "shellRealize", XtCXtToolkitError,
+ − 417 "Shell widget \"%s\" has an invalid geometry specification: \"%s\"",
+ − 418 params, &num_params);
+ − 419 }
+ − 420 }
+ − 421 else
+ − 422 flag = 0;
+ − 423
+ − 424 w->shell.client_specified |= _XtShellGeometryParsed;
+ − 425 }
+ − 426
+ − 427 /* Lifted almost entirely from Realize() in Shell.c
+ − 428 */
+ − 429 static void ExternalShellRealize (Widget wid, Mask *vmask,
+ − 430 XSetWindowAttributes *attr)
+ − 431 {
+ − 432 ExternalShellWidget w = (ExternalShellWidget) wid;
+ − 433 Mask mask = *vmask;
+ − 434 Window win = w->externalShell.external_window;
+ − 435
+ − 436 if (!win) {
+ − 437 Cardinal count = 1;
+ − 438 XtErrorMsg("invalidWindow","shellRealize", XtCXtToolkitError,
+ − 439 "No external window specified for ExternalShell widget %s",
+ − 440 &wid->core.name, &count);
+ − 441 }
+ − 442
+ − 443 if (! (w->shell.client_specified & _XtShellGeometryParsed)) {
+ − 444 /* we'll get here only if there was no child the first
+ − 445 time we were realized. If the shell was Unrealized
+ − 446 and then re-Realized, we probably don't want to
+ − 447 re-evaluate the defaults anyway.
+ − 448 */
+ − 449 GetGeometry(wid, (Widget)NULL);
+ − 450 }
+ − 451 else if (w->core.background_pixmap == XtUnspecifiedPixmap) {
+ − 452 /* I attempt to inherit my child's background to avoid screen flash
+ − 453 * if there is latency between when I get resized and when my child
+ − 454 * is resized. Background=None is not satisfactory, as I want the
+ − 455 * user to get immediate feedback on the new dimensions (most
+ − 456 * particularly in the case of a non-reparenting wm). It is
+ − 457 * especially important to have the server clear any old cruft
+ − 458 * from the display when I am resized larger.
+ − 459 */
+ − 460 Widget *childP = w->composite.children;
+ − 461 int i;
+ − 462 for (i = w->composite.num_children; i; i--, childP++) {
+ − 463 if (XtIsWidget(*childP) && XtIsManaged(*childP)) {
+ − 464 if ((*childP)->core.background_pixmap
+ − 465 != XtUnspecifiedPixmap) {
+ − 466 mask &= ~(CWBackPixel);
+ − 467 mask |= CWBackPixmap;
+ − 468 attr->background_pixmap =
+ − 469 w->core.background_pixmap =
+ − 470 (*childP)->core.background_pixmap;
+ − 471 } else {
440
+ − 472 attr->background_pixel =
+ − 473 w->core.background_pixel =
428
+ − 474 (*childP)->core.background_pixel;
+ − 475 }
+ − 476 break;
+ − 477 }
+ − 478 }
+ − 479 }
+ − 480
+ − 481 if(w->shell.save_under) {
+ − 482 mask |= CWSaveUnder;
+ − 483 attr->save_under = TRUE;
+ − 484 }
+ − 485 if(w->shell.override_redirect) {
+ − 486 mask |= CWOverrideRedirect;
+ − 487 attr->override_redirect = TRUE;
+ − 488 }
+ − 489 if (wid->core.width == 0 || wid->core.height == 0) {
+ − 490 Cardinal count = 1;
+ − 491 XtErrorMsg("invalidDimension", "shellRealize", XtCXtToolkitError,
+ − 492 "Shell widget %s has zero width and/or height",
+ − 493 &wid->core.name, &count);
+ − 494 }
+ − 495 wid->core.window = win;
+ − 496 XChangeWindowAttributes(XtDisplay(wid), wid->core.window,
+ − 497 mask, attr);
+ − 498
+ − 499 }
+ − 500
2108
+ − 501 static void ExternalShellDestroy (Widget wid)
428
+ − 502 {
+ − 503 ExternalShellWidget w = (ExternalShellWidget)wid;
+ − 504
+ − 505 if (XtIsRealized(wid))
+ − 506 ExternalShellUnrealize(wid);
+ − 507
+ − 508 NOTIFY(w, extw_notify_end, 0, 0, 0);
+ − 509 }
+ − 510
+ − 511 /* Invoke matching routine from superclass, but first override its
+ − 512 geometry opinions with our own routine */
+ − 513
2108
+ − 514 static void ChangeManaged (Widget wid)
428
+ − 515 {
+ − 516 if (!XtIsRealized (wid))
+ − 517 GetGeometry(wid, (Widget)NULL);
+ − 518 (*((ShellClassRec*)externalShellClassRec.core_class.superclass)->
+ − 519 composite_class.change_managed)(wid);
+ − 520 }
+ − 521
+ − 522 /* Based on RootGeometryManager() in Shell.c */
+ − 523
2108
+ − 524 static XtGeometryResult
+ − 525 ExternalShellRootGeometryManager (Widget gw, XtWidgetGeometry *request,
+ − 526 XtWidgetGeometry *reply)
428
+ − 527 {
+ − 528 ExternalShellWidget w = (ExternalShellWidget)gw;
+ − 529 unsigned int mask = request->request_mode;
+ − 530 XEvent event;
+ − 531 int oldx, oldy, oldwidth, oldheight, oldborder_width;
+ − 532 unsigned long request_num;
+ − 533 XtWidgetGeometry req = *request; /* don't modify caller's structure */
+ − 534
+ − 535 oldx = w->core.x;
+ − 536 oldy = w->core.y;
+ − 537 oldwidth = w->core.width;
+ − 538 oldheight = w->core.height;
+ − 539 oldborder_width = w->core.border_width;
+ − 540
+ − 541 #define PutBackGeometry() \
+ − 542 { w->core.x = oldx; \
+ − 543 w->core.y = oldy; \
+ − 544 w->core.width = oldwidth; \
+ − 545 w->core.height = oldheight; \
+ − 546 w->core.border_width = oldborder_width; }
+ − 547
+ − 548 if (mask & CWX) {
+ − 549 if (w->core.x == request->x) mask &= ~CWX;
+ − 550 else
+ − 551 w->core.x = request->x;
+ − 552 }
+ − 553 if (mask & CWY) {
+ − 554 if (w->core.y == request->y) mask &= ~CWY;
+ − 555 else w->core.y = request->y;
+ − 556 }
+ − 557 if (mask & CWBorderWidth) {
+ − 558 if (w->core.border_width == request->border_width)
+ − 559 mask &= ~CWBorderWidth;
+ − 560 else w->core.border_width = request->border_width;
+ − 561 }
+ − 562 if (mask & CWWidth) {
+ − 563 if (w->core.width == request->width) mask &= ~CWWidth;
+ − 564 else w->core.width = request->width;
+ − 565 }
+ − 566 if (mask & CWHeight) {
+ − 567 if (w->core.height == request->height) mask &= ~CWHeight;
+ − 568 else w->core.height = request->height;
+ − 569 }
+ − 570
+ − 571 if (!XtIsRealized((Widget)w)) return XtGeometryYes;
+ − 572
+ − 573 req.sibling = None;
+ − 574 req.request_mode = mask & ~CWSibling;
+ − 575 request_num = NextRequest(XtDisplay(w));
+ − 576 extw_send_geometry_value(XtDisplay(w), XtWindow(w),
+ − 577 a_EXTW_GEOMETRY_MANAGER,
+ − 578 extw_notify_gm, &req, 0);
+ − 579
+ − 580 if (w->externalShell.dead_client == TRUE) {
+ − 581 /* The client is sick. Refuse the request.
+ − 582 * If the client recovers and decides to honor the
+ − 583 * request, it will be handled by Shell's EventHandler().
+ − 584 */
+ − 585 PutBackGeometry();
+ − 586 return XtGeometryNo;
+ − 587 }
+ − 588
+ − 589 if (extw_wait_for_response(gw, &event, request_num, extw_notify_gm,
+ − 590 w->externalShell.client_timeout)) {
+ − 591 XtGeometryResult result = (XtGeometryResult) event.xclient.data.l[2];
+ − 592
+ − 593 if (result != XtGeometryYes)
+ − 594 PutBackGeometry();
+ − 595 if (result == XtGeometryAlmost) {
+ − 596 extw_get_geometry_value(XtDisplay(w), XtWindow(w),
+ − 597 a_EXTW_GEOMETRY_MANAGER, reply);
+ − 598 }
+ − 599 return result;
+ − 600 } else {
+ − 601 w->externalShell.dead_client = TRUE; /* timed out; must be broken */
+ − 602 PutBackGeometry();
+ − 603 return XtGeometryNo;
+ − 604 }
+ − 605 #undef PutBackGeometry
+ − 606 }
+ − 607
+ − 608 static void
+ − 609 hack_event_masks_1 (Display *display, Window w, int this_window_propagate)
+ − 610 {
+ − 611 Window root, parent, *children;
877
+ − 612 unsigned int nchildren, i;
428
+ − 613
+ − 614 if (!XQueryTree (display, w, &root, &parent, &children, &nchildren))
+ − 615 return;
+ − 616 for (i=0; i<nchildren; i++)
+ − 617 hack_event_masks_1 (display, children[i], 1);
+ − 618 if (children)
+ − 619 XFree (children);
+ − 620 {
+ − 621 XWindowAttributes xwa;
+ − 622 XSetWindowAttributes xswa;
+ − 623 if (XGetWindowAttributes (display, w, &xwa)) {
+ − 624 xswa.event_mask = xwa.your_event_mask & ~KeyPressMask;
+ − 625 if (this_window_propagate)
+ − 626 xswa.do_not_propagate_mask = xwa.do_not_propagate_mask & ~KeyPressMask;
+ − 627 XChangeWindowAttributes (display, w, CWEventMask, &xswa);
+ − 628 }
+ − 629 }
+ − 630 }
+ − 631
+ − 632 /* fix all event masks on all subwindows of the specified window so that
+ − 633 all key presses in any subwindow filter up to the specified window.
+ − 634
+ − 635 We have to do this cruftiness with external widgets so that we don't
+ − 636 step on Motif's concept of keyboard focus. (Due to the nature of
+ − 637 Xt and Motif, X's idea of who gets the keyboard events may not jive
+ − 638 with Xt's idea of same, and Xt redirects the events to the proper
+ − 639 window. This occurs on the client side and we have no knowledge
+ − 640 of it, so we have to rely on a SendEvent from the client side to
+ − 641 receive our keyboard events.)
+ − 642 */
+ − 643
+ − 644 static void
+ − 645 hack_event_masks (Display *display, Window w)
+ − 646 {
+ − 647 hack_event_masks_1 (display, w, 0);
+ − 648 }
+ − 649
+ − 650 /* external entry points */
+ − 651
+ − 652 Bool
+ − 653 ExternalShellReady (Widget w, Window win, long event_mask)
+ − 654 {
+ − 655 ExternalShellWidget ew = (ExternalShellWidget) w;
+ − 656 XEvent event;
+ − 657 unsigned long request_num;
+ − 658
+ − 659 request_num = NextRequest(XtDisplay(w));
+ − 660 NOTIFY(ew, extw_notify_init, (long) win, event_mask, 0);
+ − 661 if (extw_wait_for_response(w, &event, request_num, extw_notify_init,
+ − 662 ew->externalShell.client_timeout))
+ − 663 {
+ − 664 /* Xt/Xm extw's have more elaborate focus needs than mere
+ − 665 Xlib ones.
+ − 666
+ − 667 Rather independently, they *don't* need the
+ − 668 ConfigureNotify event, having fixed up the window size in
+ − 669 ChangeManaged, above, but Xlib extw's do need this.
+ − 670 */
+ − 671 ew->externalShell.client_type = event.xclient.data.l[2];
+ − 672 if (ew->externalShell.client_type != EXTW_TYPE_XLIB)
+ − 673 {
+ − 674 hack_event_masks (XtDisplay (w), XtWindow (w));
+ − 675 }
+ − 676 else
+ − 677 {
+ − 678 XConfigureEvent ev;
+ − 679 XWindowAttributes xwa;
+ − 680 ev.type = ConfigureNotify;
+ − 681 ev.display = XtDisplay (w);
+ − 682 ev.event = ev.window = XtWindow (w);
+ − 683 XGetWindowAttributes (ev.display, ev.window, &xwa);
+ − 684 ev.x = xwa.x; ev.y = xwa.y;
+ − 685 ev.width = xwa.width; ev.height = xwa.height;
+ − 686 ev.border_width = xwa.border_width;
+ − 687 ev.above = None;
+ − 688 ev.override_redirect = xwa.override_redirect;
+ − 689 XtDispatchEvent ((XEvent *) &ev);
+ − 690 }
+ − 691 return TRUE;
+ − 692 }
+ − 693 else
+ − 694 return FALSE;
+ − 695 }
+ − 696
+ − 697 void
+ − 698 ExternalShellSetFocus (Widget wid)
+ − 699 {
+ − 700 ExternalShellWidget w = (ExternalShellWidget) wid;
+ − 701
+ − 702 NOTIFY(w, extw_notify_set_focus, 0, 0, 0);
+ − 703 }
+ − 704
+ − 705 extern void _XtUnregisterWindow (Window, Widget);
+ − 706
+ − 707 void
+ − 708 ExternalShellUnrealize (Widget w)
+ − 709 {
+ − 710 #if (XT_REVISION > 5)
+ − 711 XtUnregisterDrawable (XtDisplay (w), w->core.window);
+ − 712 #else
+ − 713 extern void _XtUnregisterWindow (Window, Widget);
+ − 714 _XtUnregisterWindow (w->core.window, w);
+ − 715 #endif
+ − 716 w->core.window = 0;
+ − 717 }