|
428
|
1 /* Emacs shell widget -- define the two widgets.
|
|
|
2 Copyright (C) 1994, 1995 Sun Microsystems, Inc.
|
|
|
3
|
|
|
4 This file is part of XEmacs.
|
|
|
5
|
|
|
6 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
7 under the terms of the GNU General Public License as published by the
|
|
|
8 Free Software Foundation; either version 2, or (at your option) any
|
|
|
9 later version.
|
|
|
10
|
|
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
14 for more details.
|
|
|
15
|
|
|
16 You should have received a copy of the GNU General Public License
|
|
|
17 along with XEmacs; see the file COPYING. If not, write to
|
|
|
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
19 Boston, MA 02111-1307, USA. */
|
|
|
20
|
|
|
21 /* Synched up with: Not in FSF. */
|
|
|
22
|
|
|
23 /* Written by Ben Wing, May, 1994. */
|
|
|
24
|
|
|
25 /*
|
|
|
26 It is rather unfortunate that we have to do this. Blame those
|
|
|
27 short-sighted people who designed the monstrosities known as
|
|
|
28 Xt and ICCCM.
|
|
|
29 */
|
|
|
30
|
|
|
31 /*
|
|
|
32 This widget is not actually Emacs-specific; perhaps there could
|
|
|
33 be a better name than "EmacsShell". What it does is work around
|
|
|
34 a limitation in Xt in correctly dealing with the window-manager
|
|
|
35 size hints with applications that
|
|
|
36
|
|
|
37 (a) dynamically change their window size
|
|
|
38 (b) have a cell size (width-inc and height-inc) other than 1
|
|
|
39
|
|
|
40 and
|
|
|
41
|
|
|
42 (c) cannot predict in advance exactly what size their shell will be
|
|
|
43 (This is the more common situation, when you have a number
|
|
|
44 of widgets, each with their own size ideas)
|
|
|
45
|
|
|
46 This widget assumes that your program contains a fixed "base size"
|
|
|
47 plus some number of cells (e.g. character cells). The WMShell
|
|
|
48 resources "widthInc" and "heightInc" specify the size of a
|
|
|
49 character cell, and the window manager will report the app's
|
|
|
50 size in cells rather than in pixels.
|
|
|
51
|
|
|
52 If you use this widget, do not use the WMShell resources
|
|
|
53 "baseWidth", "baseHeight", "minWidth", or "minHeight".
|
|
|
54 Instead, use "widthCells" and "heightCells" to specify the
|
|
|
55 current size in cells (you must keep this up-to-date),
|
|
|
56 and "minWidthCells" and "minHeightCells" to specify the
|
|
|
57 minimum size in cells.
|
|
|
58
|
|
|
59 Every time that the program issues a size command, the
|
|
|
60 "baseWidth", "baseHeight", "minWidth", and "minHeight" fields
|
|
|
61 of the WM_NORMAL_HINTS property will be updated to stay in
|
|
|
62 line with the resource values specified above. The calculations
|
|
|
63 are done once the desired shell size is known but before the
|
|
|
64 window-manager size-change request is issued. (We must do it
|
|
|
65 at this time because before then we don't know what size we
|
|
|
66 will request, and after the request the deed has already
|
|
|
67 been done.)
|
|
|
68
|
|
|
69 After you change the "baseWidth", "baseHeight", "minWidth",
|
|
|
70 or "minHeight" resources, you need to call
|
|
|
71 EmacsShellUpdateSizeHints() to manually update the size
|
|
|
72 hints, except in the following two circumstances:
|
|
|
73
|
|
|
74 (a) you are about to make a geometry request.
|
|
|
75 (b) you are changing only "baseWidth" and "baseHeight"
|
|
|
76 from within a resize procedure. (In this case,
|
|
|
77 the size hints are already correct.)
|
|
|
78
|
|
|
79 */
|
|
|
80
|
|
|
81 #include <config.h>
|
|
|
82
|
|
|
83 #include <stdio.h>
|
|
|
84 #include <stdlib.h>
|
|
|
85 #include <X11/StringDefs.h>
|
|
|
86 #include "xintrinsicp.h"
|
|
|
87 #include <X11/Shell.h>
|
|
|
88 #include <X11/ShellP.h>
|
|
|
89 #include <X11/Vendor.h>
|
|
|
90 #include <X11/VendorP.h>
|
|
|
91 #include "EmacsShellP.h"
|
|
|
92
|
|
|
93 #if defined (DEFINE_TOP_LEVEL_EMACS_SHELL)
|
|
|
94 #define EMACS_SHELL_WIDGET TopLevelEmacsShellWidget
|
|
|
95 #define SUPERCLASS_WIDGET_CLASS topLevelShellWidgetClass
|
|
|
96 #define SUPERCLASS_CLASS_REC topLevelShellClassRec
|
|
|
97 #define EMACS_SHELL_REC TopLevelEmacsShellRec
|
|
|
98 #define EMACS_SHELL_CLASS_REC topLevelEmacsShellClassRec
|
|
|
99 #define EMACS_SHELL_CLASS_REC_TYPE TopLevelEmacsShellClassRec
|
|
|
100 #define EMACS_SHELL_CLASS_NAME "TopLevelEmacsShell"
|
|
|
101 #define EMACS_SHELL_WIDGET_CLASS topLevelEmacsShellWidgetClass
|
|
|
102 #define EMACS_SHELL_UPDATE_SIZE_HINTS TopLevelEmacsShellUpdateSizeHints
|
|
|
103 #elif defined (DEFINE_TRANSIENT_EMACS_SHELL)
|
|
|
104 #define EMACS_SHELL_WIDGET TransientEmacsShellWidget
|
|
|
105 #define SUPERCLASS_WIDGET_CLASS transientShellWidgetClass
|
|
|
106 #define SUPERCLASS_CLASS_REC transientShellClassRec
|
|
|
107 #define EMACS_SHELL_REC TransientEmacsShellRec
|
|
|
108 #define EMACS_SHELL_CLASS_REC transientEmacsShellClassRec
|
|
|
109 #define EMACS_SHELL_CLASS_REC_TYPE TransientEmacsShellClassRec
|
|
|
110 #define EMACS_SHELL_CLASS_NAME "TransientEmacsShell"
|
|
|
111 #define EMACS_SHELL_WIDGET_CLASS transientEmacsShellWidgetClass
|
|
|
112 #define EMACS_SHELL_UPDATE_SIZE_HINTS TransientEmacsShellUpdateSizeHints
|
|
|
113 #else
|
|
|
114 Error. Must define either DEFINE_TOP_LEVEL_EMACS_SHELL or
|
|
|
115 DEFINE_TRANSIENT_EMACS_SHELL.
|
|
|
116 #endif
|
|
|
117
|
|
|
118 typedef struct {
|
|
|
119 XtPointer next_extension;
|
|
|
120 XrmQuark record_type;
|
|
|
121 long version;
|
|
|
122 Cardinal record_size;
|
|
|
123 } GenericClassExtRec;
|
|
|
124
|
|
|
125 static XtGeometryResult RootGeometryManager (Widget gw,
|
|
|
126 XtWidgetGeometry *request, XtWidgetGeometry *reply);
|
|
|
127 static void ChangeManaged (Widget w);
|
|
|
128
|
|
|
129 /* snarfed from Shell.c */
|
|
|
130 #define BIGSIZE ((Dimension)32767)
|
|
|
131
|
|
|
132 static XtResource resources[] = {
|
|
|
133 #define offset(field) XtOffset(EMACS_SHELL_WIDGET, emacs_shell.field)
|
|
|
134 #define coreoffset(field) XtOffset(EMACS_SHELL_WIDGET, core.field)
|
|
|
135 #ifdef LWLIB_USES_MOTIF
|
|
|
136 /* *** BOGOSITY^10! *** The Motif VendorShell fucks around with
|
|
|
137 the default values for X and Y, for no obvious reason. This
|
|
|
138 causes Shell to indicate that the defaults of (0,0) were
|
|
|
139 program-specified, instead of letting the WM do what it wants. */
|
|
440
|
140 { XtNx, XtCPosition,
|
|
|
141 XtRPosition, sizeof (Position),
|
|
|
142 coreoffset (x), XtRImmediate, (XtPointer)BIGSIZE },
|
|
|
143 { XtNy, XtCPosition,
|
|
|
144 XtRPosition, sizeof (Position),
|
|
|
145 coreoffset (y), XtRImmediate, (XtPointer)BIGSIZE },
|
|
428
|
146 #endif
|
|
440
|
147 { XtNwidthCells, XtCWidthCells,
|
|
|
148 XtRInt, sizeof (int),
|
|
|
149 offset (width_cells), XtRImmediate, (XtPointer)0 },
|
|
|
150 { XtNheightCells, XtCHeightCells,
|
|
|
151 XtRInt, sizeof (int),
|
|
|
152 offset (height_cells), XtRImmediate, (XtPointer)0 },
|
|
|
153 { XtNminWidthCells, XtCMinWidthCells,
|
|
|
154 XtRInt, sizeof (int),
|
|
|
155 offset (min_width_cells), XtRImmediate, (XtPointer)0 },
|
|
|
156 { XtNminHeightCells, XtCMinHeightCells,
|
|
|
157 XtRInt, sizeof (int),
|
|
|
158 offset (min_height_cells), XtRImmediate, (XtPointer)0 },
|
|
428
|
159 };
|
|
|
160
|
|
|
161 static CompositeClassExtensionRec compositeClassExtRec = {
|
|
|
162 NULL,
|
|
|
163 NULLQUARK,
|
|
|
164 XtCompositeExtensionVersion,
|
|
440
|
165 sizeof (CompositeClassExtensionRec),
|
|
428
|
166 TRUE,
|
|
|
167 };
|
|
|
168
|
|
|
169 static ShellClassExtensionRec shellClassExtRec = {
|
|
|
170 NULL,
|
|
|
171 NULLQUARK,
|
|
|
172 XtShellExtensionVersion,
|
|
440
|
173 sizeof (ShellClassExtensionRec),
|
|
428
|
174 RootGeometryManager
|
|
|
175 };
|
|
|
176
|
|
|
177 EMACS_SHELL_CLASS_REC_TYPE EMACS_SHELL_CLASS_REC = {
|
|
|
178 { /*
|
|
|
179 * core_class fields
|
|
|
180 */
|
|
|
181 /* superclass */ (WidgetClass) &SUPERCLASS_CLASS_REC,
|
|
|
182 /* class_name */ (String) EMACS_SHELL_CLASS_NAME,
|
|
440
|
183 /* size */ sizeof (EMACS_SHELL_REC),
|
|
428
|
184 /* Class Initializer */ NULL,
|
|
|
185 /* class_part_initialize*/ NULL, /* XtInheritClassPartInitialize, */
|
|
|
186 /* Class init'ed ? */ FALSE,
|
|
|
187 /* initialize */ NULL,
|
|
|
188 /* initialize_notify */ NULL,
|
|
|
189 /* realize */ XtInheritRealize,
|
|
|
190 /* actions */ NULL,
|
|
|
191 /* num_actions */ 0,
|
|
|
192 /* resources */ resources,
|
|
|
193 /* resource_count */ XtNumber (resources),
|
|
|
194 /* xrm_class */ NULLQUARK,
|
|
1294
|
195 /* compress_motion */ TRUE,
|
|
|
196 /* compress_exposure */ XtExposeCompressMaximal | XtExposeNoRegion,
|
|
|
197 /* compress_enterleave*/ TRUE,
|
|
428
|
198 /* visible_interest */ TRUE,
|
|
|
199 /* destroy */ NULL,
|
|
|
200 /* resize */ XtInheritResize,
|
|
|
201 /* expose */ NULL,
|
|
|
202 /* set_values */ NULL, /* XtInheritSetValues, */
|
|
|
203 /* set_values_hook */ NULL,
|
|
|
204 /* set_values_almost */ XtInheritSetValuesAlmost,
|
|
|
205 /* get_values_hook */ NULL,
|
|
|
206 /* accept_focus */ NULL,
|
|
|
207 /* intrinsics version */ XtVersion,
|
|
|
208 /* callback offsets */ NULL,
|
|
|
209 /* tm_table */ NULL,
|
|
|
210 /* query_geometry */ NULL,
|
|
|
211 /* display_accelerator*/ NULL,
|
|
|
212 /* extension */ NULL
|
|
|
213 },{ /* Composite */
|
|
|
214 /* geometry_manager */ XtInheritGeometryManager,
|
|
|
215 /* change_managed */ ChangeManaged,
|
|
|
216 /* insert_child */ XtInheritInsertChild,
|
|
|
217 /* delete_child */ XtInheritDeleteChild,
|
|
|
218 /* extension */ (XtPointer)&compositeClassExtRec
|
|
|
219 },{ /* Shell */
|
|
|
220 /* extension */ (XtPointer)&shellClassExtRec
|
|
|
221 },{ /* WMShell */
|
|
|
222 /* extension */ NULL
|
|
|
223 },{ /* VendorShell */
|
|
|
224 /* extension */ NULL
|
|
|
225 },{ /* TopLevelShell or TransientShell */
|
|
|
226 /* both have exactly one XtPointer here. */
|
|
|
227 /* extension */ NULL
|
|
|
228 },{ /* EmacsShell */
|
|
|
229 0
|
|
|
230 }
|
|
|
231 };
|
|
|
232
|
|
|
233 WidgetClass EMACS_SHELL_WIDGET_CLASS = (WidgetClass) &EMACS_SHELL_CLASS_REC;
|
|
|
234
|
|
|
235 static void
|
|
|
236 update_size_hints_internal (EMACS_SHELL_WIDGET w,
|
|
|
237 int width, int height)
|
|
|
238 {
|
|
|
239 int base_width, base_height;
|
|
|
240 int cell_width, cell_height;
|
|
|
241 Arg al [10];
|
|
|
242
|
|
|
243 /* time to update them thar size hints */
|
|
|
244 cell_width = w->wm.size_hints.width_inc;
|
|
|
245 cell_height = w->wm.size_hints.height_inc;
|
|
|
246 base_width = width - cell_width * w->emacs_shell.width_cells;
|
|
|
247 base_height = height - cell_height * w->emacs_shell.height_cells;
|
|
|
248 #ifdef DEBUG_GEOMETRY_MANAGEMENT
|
|
|
249 /* Very useful info when debugging geometry management problems.
|
|
|
250 When it's guaranteed that no more such problems exist, take
|
|
|
251 this stuff out. */
|
|
|
252 printf ("update_size_hints_internal:\n");
|
|
|
253 printf (" actual pixel size: %d %d\n", width, height);
|
|
|
254 printf (" cell size in pixels: %d %d\n", cell_width, cell_height);
|
|
|
255 printf (" text area size in cells: %d %d\n", w->emacs_shell.width_cells,
|
|
|
256 w->emacs_shell.height_cells);
|
|
|
257 printf (" base size set to: %d %d\n", base_width, base_height);
|
|
|
258 fflush (stdout);
|
|
|
259 #endif
|
|
|
260 XtSetArg(al [0], XtNbaseWidth, base_width);
|
|
|
261 XtSetArg(al [1], XtNbaseHeight, base_height);
|
|
|
262 XtSetArg(al [2], XtNminWidth, base_width +
|
|
|
263 cell_width * w->emacs_shell.min_width_cells);
|
|
|
264 XtSetArg(al [3], XtNminHeight, base_height +
|
|
|
265 cell_height * w->emacs_shell.min_height_cells);
|
|
|
266 XtSetValues ((Widget) w, al, 4);
|
|
|
267 }
|
|
|
268
|
|
|
269 static XtGeometryResult
|
|
|
270 SuperClassRootGeometryManager (Widget gw,
|
|
|
271 XtWidgetGeometry *request,
|
|
|
272 XtWidgetGeometry *reply)
|
|
|
273 {
|
|
|
274 ShellWidgetClass swc = (ShellWidgetClass) SUPERCLASS_WIDGET_CLASS;
|
|
|
275 ShellClassExtensionRec *scer;
|
|
|
276 GenericClassExtRec *gcer;
|
|
|
277
|
|
|
278 /* find the shell extension record that specifies the
|
|
|
279 root geometry manager method */
|
|
|
280 for (gcer = (GenericClassExtRec *) swc->shell_class.extension;
|
|
|
281 gcer;
|
|
|
282 gcer = (GenericClassExtRec *) gcer->next_extension)
|
|
|
283 {
|
|
|
284 if (gcer->record_type == NULLQUARK)
|
|
|
285 break;
|
|
|
286 }
|
|
|
287
|
|
|
288 if (!gcer)
|
|
|
289 abort ();
|
|
|
290
|
|
|
291 /* call it to actually make the geometry request */
|
|
|
292 scer = (ShellClassExtensionRec *) gcer;
|
|
|
293 return (scer->root_geometry_manager)(gw, request, reply);
|
|
|
294 }
|
|
|
295
|
|
|
296 static XtGeometryResult
|
|
|
297 RootGeometryManager (Widget gw,
|
|
|
298 XtWidgetGeometry *request,
|
|
|
299 XtWidgetGeometry *reply)
|
|
|
300 {
|
|
|
301 EMACS_SHELL_WIDGET w = (EMACS_SHELL_WIDGET) gw;
|
|
|
302 /* OK since this file is not dumped */
|
|
|
303 static int reentrant = 0;
|
|
|
304 XtGeometryResult result;
|
|
|
305
|
|
|
306 if (reentrant)
|
|
|
307 abort ();
|
|
|
308 reentrant++;
|
|
|
309
|
|
|
310 #ifdef DEBUG_GEOMETRY_MANAGEMENT
|
|
|
311 printf ("root_geometry_manager:\n");
|
|
|
312 printf (" current shell size: %d %d\n", w->core.width, w->core.height);
|
|
|
313 if (request->request_mode & CWWidth)
|
|
|
314 printf ("width requested;");
|
|
|
315 if (request->request_mode & CWHeight)
|
|
|
316 printf ("height requested;");
|
|
|
317 printf ("\n");
|
|
|
318 printf (" requested shell size: %d %d\n", request->width, request->height);
|
|
|
319 #endif
|
|
|
320 /* update the size hints */
|
|
|
321 update_size_hints_internal (w,
|
|
|
322 request->request_mode & CWWidth ?
|
|
|
323 request->width : w->core.width,
|
|
|
324 request->request_mode & CWHeight ?
|
|
|
325 request->height : w->core.height);
|
|
|
326
|
|
|
327 result = SuperClassRootGeometryManager (gw, request, reply);
|
|
|
328
|
|
|
329 #ifdef DEBUG_GEOMETRY_MANAGEMENT
|
|
|
330 printf (" result: %s\n",
|
|
|
331 result == XtGeometryYes ? "XtGeometryYes" :
|
|
|
332 result == XtGeometryNo ? "XtGeometryNo" :
|
|
|
333 result == XtGeometryAlmost ? "XtGeometryAlmost" :
|
|
|
334 "XtGeometryDone");
|
|
|
335 if (reply->request_mode & CWWidth)
|
|
|
336 printf ("width returned;");
|
|
|
337 if (reply->request_mode & CWHeight)
|
|
|
338 printf ("height returned;");
|
|
|
339 printf ("\n");
|
|
|
340 printf (" resulting shell size: %d %d\n", reply->width, reply->height);
|
|
|
341 printf ("----------\n");
|
|
|
342 fflush (stdout);
|
|
|
343 #endif
|
|
|
344 reentrant--;
|
|
|
345 return result;
|
|
|
346 }
|
|
|
347
|
|
|
348 static void
|
|
|
349 ChangeManaged (Widget wid)
|
|
|
350 {
|
|
|
351 EMACS_SHELL_WIDGET w = (EMACS_SHELL_WIDGET) wid;
|
|
|
352
|
|
|
353 /* If not realized, then we're being called from XtRealizeWidget().
|
|
|
354 RootGeometryManager() has not yet been called, and thus our
|
|
|
355 base size is incorrect. We need to set it now or the Shell
|
|
|
356 will mess up geometry specifications with negative positional
|
|
|
357 offsets. */
|
|
|
358 if (!XtIsRealized (wid))
|
|
|
359 {
|
|
|
360 Widget child = NULL;
|
|
|
361 Cardinal i;
|
|
|
362
|
|
|
363 /* the managed child indicates what our size is */
|
|
|
364 for (i = 0; i < w->composite.num_children; i++) {
|
|
|
365 if (XtIsManaged(w->composite.children[i])) {
|
|
|
366 child = w->composite.children[i];
|
|
|
367 break;
|
|
|
368 }
|
|
|
369 }
|
|
|
370
|
|
|
371 update_size_hints_internal (w, child->core.width, child->core.height);
|
|
|
372 }
|
|
|
373
|
|
|
374 /* call the real ChangeManaged */
|
|
|
375 (((ShellWidgetClass) SUPERCLASS_WIDGET_CLASS)->
|
|
|
376 composite_class.change_managed)(wid);
|
|
|
377 }
|
|
|
378
|
|
|
379
|
|
|
380 /******************* external entry points *********************/
|
|
|
381
|
|
|
382 void
|
|
|
383 EMACS_SHELL_UPDATE_SIZE_HINTS (Widget gw)
|
|
|
384 {
|
|
|
385 EMACS_SHELL_WIDGET w = (EMACS_SHELL_WIDGET) gw;
|
|
|
386 update_size_hints_internal (w, w->core.width, w->core.height);
|
|
|
387 }
|
