unofficial mirror of bug-gnu-emacs@gnu.org 
 help / color / mirror / code / Atom feed
blob 4c00e3533306a468db5ac4cdf4b245f2c11b9235 15069 bytes (raw)
name: src/widget.c 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
 
/* The emacs frame widget.
   Copyright (C) 1992-1993, 2000-2019 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */

/* Emacs 19 face widget ported by Fred Pierresteguy */

/* This file has been censored by the Communications Decency Act.
   That law was passed under the guise of a ban on pornography, but
   it bans far more than that.  This file did not contain pornography,
   but it was censored nonetheless.  */

#include <config.h>
#include "widget.h"

#include <stdlib.h>

#include "lisp.h"
#include "sysstdio.h"
#include "xterm.h"
#include "frame.h"

#include <X11/StringDefs.h>
#include <X11/IntrinsicP.h>
#include <X11/cursorfont.h>
#include "widgetprv.h"
#include <X11/ObjectP.h>
#include <X11/Shell.h>
#include <X11/ShellP.h>
#include "../lwlib/lwlib.h"

static void EmacsFrameInitialize (Widget request, Widget new, ArgList dum1, Cardinal *dum2);
static void EmacsFrameDestroy (Widget widget);
static void EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs);
static void EmacsFrameResize (Widget widget);
static XtGeometryResult EmacsFrameQueryGeometry (Widget widget, XtWidgetGeometry *request, XtWidgetGeometry *result);


#define offset(field) offsetof (EmacsFrameRec, emacs_frame.field)

static XtResource resources[] = {
  {(char *) XtNgeometry, (char *) XtCGeometry, XtRString, sizeof (String),
     offset (geometry), XtRString, (XtPointer) 0},
  {XtNiconic, XtCIconic, XtRBoolean, sizeof (Boolean),
     offset (iconic), XtRImmediate, (XtPointer) False},

  {(char *) XtNemacsFrame, (char *) XtCEmacsFrame,
     XtRPointer, sizeof (XtPointer),
     offset (frame), XtRImmediate, 0},

  {(char *) XtNminibuffer, (char *) XtCMinibuffer, XtRInt, sizeof (int),
     offset (minibuffer), XtRImmediate, (XtPointer)0},
  {(char *) XtNunsplittable, (char *) XtCUnsplittable,
     XtRBoolean, sizeof (Boolean),
     offset (unsplittable), XtRImmediate, (XtPointer)0},
  {(char *) XtNinternalBorderWidth, (char *) XtCInternalBorderWidth,
     XtRInt, sizeof (int),
     offset (internal_border_width), XtRImmediate, (XtPointer)4},
  {(char *) XtNinterline, (char *) XtCInterline, XtRInt, sizeof (int),
     offset (interline), XtRImmediate, (XtPointer)0},
  {(char *) XtNforeground, (char *) XtCForeground, XtRPixel, sizeof (Pixel),
     offset (foreground_pixel), XtRString, (char *) "XtDefaultForeground"},
  {(char *) XtNcursorColor, (char *) XtCForeground, XtRPixel, sizeof (Pixel),
     offset (cursor_color), XtRString, (char *) "XtDefaultForeground"},
  {(char *) XtNbarCursor, (char *) XtCBarCursor, XtRBoolean, sizeof (Boolean),
     offset (bar_cursor), XtRImmediate, (XtPointer)0},
  {(char *) XtNvisualBell, (char *) XtCVisualBell, XtRBoolean, sizeof (Boolean),
     offset (visual_bell), XtRImmediate, (XtPointer)0},
  {(char *) XtNbellVolume, (char *) XtCBellVolume, XtRInt, sizeof (int),
     offset (bell_volume), XtRImmediate, (XtPointer)0},
};

#undef offset

/*
static XtActionsRec
emacsFrameActionsTable [] = {
  {"keypress",  key_press},
  {"focus_in",  emacs_frame_focus_handler},
  {"focus_out", emacs_frame_focus_handler},
};

static char
emacsFrameTranslations [] = "\
<KeyPress>: keypress()\n\
<FocusIn>:  focus_in()\n\
<FocusOut>: focus_out()\n\
";
*/

static EmacsFrameClassRec emacsFrameClassRec = {
    { /* core fields */
    /* superclass		*/	0, /* filled in by emacsFrameClass */
    /* class_name		*/	(char *) "EmacsFrame",
    /* widget_size		*/	sizeof (EmacsFrameRec),
    /* class_initialize		*/	0,
    /* class_part_initialize	*/	0,
    /* class_inited		*/	FALSE,
    /* initialize		*/	EmacsFrameInitialize,
    /* initialize_hook		*/	0,
    /* realize			*/	EmacsFrameRealize,
    /* actions			*/	0, /*emacsFrameActionsTable*/
    /* num_actions		*/	0, /*XtNumber (emacsFrameActionsTable)*/
    /* resources		*/	resources,
    /* resource_count		*/	XtNumber (resources),
    /* xrm_class		*/	NULLQUARK,
    /* compress_motion		*/	TRUE,
    /* compress_exposure	*/	TRUE,
    /* compress_enterleave	*/	TRUE,
    /* visible_interest		*/	FALSE,
    /* destroy			*/	EmacsFrameDestroy,
    /* resize			*/	EmacsFrameResize,
    /* expose			*/	XtInheritExpose,

    /* Emacs never does XtSetvalues on this widget, so we have no code
       for it. */
    /* set_values		*/	0, /* Not supported */
    /* set_values_hook		*/	0,
    /* set_values_almost	*/	XtInheritSetValuesAlmost,
    /* get_values_hook		*/	0,
    /* accept_focus		*/	XtInheritAcceptFocus,
    /* version			*/	XtVersion,
    /* callback_private		*/	0,
    /* tm_table			*/	0, /*emacsFrameTranslations*/
    /* query_geometry		*/	EmacsFrameQueryGeometry,
    /* display_accelerator	*/	XtInheritDisplayAccelerator,
    /* extension		*/	0
    }
};

WidgetClass
emacsFrameClass (void)
{
  /* Set the superclass here rather than relying on static
     initialization, to work around an unexelf.c bug on x86 platforms
     that use the GNU Gold linker (Bug#27248).  */
  emacsFrameClassRec.core_class.superclass = &widgetClassRec;

  return (WidgetClass) &emacsFrameClassRec;
}

static void
get_default_char_pixel_size (EmacsFrame ew, int *pixel_width, int *pixel_height)
{
  struct frame *f = ew->emacs_frame.frame;
  *pixel_width = FRAME_COLUMN_WIDTH (f);
  *pixel_height = FRAME_LINE_HEIGHT (f);
}

static void
pixel_to_char_size (EmacsFrame ew, Dimension pixel_width, Dimension pixel_height, int *char_width, int *char_height)
{
  struct frame *f = ew->emacs_frame.frame;
  *char_width = FRAME_PIXEL_WIDTH_TO_TEXT_COLS (f, (int) pixel_width);
  *char_height = FRAME_PIXEL_HEIGHT_TO_TEXT_LINES (f, (int) pixel_height);
}

static void
pixel_to_text_size (EmacsFrame ew, Dimension pixel_width, Dimension pixel_height, int *text_width, int *text_height)
{
  struct frame *f = ew->emacs_frame.frame;
  *text_width = FRAME_PIXEL_TO_TEXT_WIDTH (f, (int) pixel_width);
  *text_height = FRAME_PIXEL_TO_TEXT_HEIGHT (f, (int) pixel_height);
}

static void
char_to_pixel_size (EmacsFrame ew, int char_width, int char_height, Dimension *pixel_width, Dimension *pixel_height)
{
  struct frame *f = ew->emacs_frame.frame;
  *pixel_width = FRAME_TEXT_COLS_TO_PIXEL_WIDTH (f, char_width);
  *pixel_height = FRAME_TEXT_LINES_TO_PIXEL_HEIGHT (f, char_height);
}

static void
round_size_to_char (EmacsFrame ew, Dimension in_width, Dimension in_height, Dimension *out_width, Dimension *out_height)
{
  int char_width;
  int char_height;
  pixel_to_char_size (ew, in_width, in_height, &char_width, &char_height);
  char_to_pixel_size (ew, char_width, char_height, out_width, out_height);
}

static Widget
get_wm_shell (Widget w)
{
  Widget wmshell;

  for (wmshell = XtParent (w);
       wmshell && !XtIsWMShell (wmshell);
       wmshell = XtParent (wmshell));

  return wmshell;
}

#if 0 /* Currently not used.  */

static void
mark_shell_size_user_specified (Widget wmshell)
{
  if (! XtIsWMShell (wmshell)) emacs_abort ();
  /* This is kind of sleazy, but I can't see how else to tell it to make it
     mark the WM_SIZE_HINTS size as user specified when appropriate. */
  ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;
}

#endif


static void
set_frame_size (EmacsFrame ew)
{
  /* The widget hierarchy is

	argv[0]			emacsShell	pane	Frame-NAME
	ApplicationShell	EmacsShell	Paned	EmacsFrame

     We accept geometry specs in this order:

	*Frame-NAME.geometry
	*EmacsFrame.geometry
	Emacs.geometry

     Other possibilities for widget hierarchies might be

	argv[0]			frame		pane	Frame-NAME
	ApplicationShell	EmacsShell	Paned	EmacsFrame
     or
	argv[0]			Frame-NAME	pane	Frame-NAME
	ApplicationShell	EmacsShell	Paned	EmacsFrame
     or
	argv[0]			Frame-NAME	pane	emacsTextPane
	ApplicationShell	EmacsFrame	Paned	EmacsTextPane

     With the current setup, the text-display-area is the part which is
     an emacs "frame", since that's the only part managed by emacs proper
     (the menubar and the parent of the menubar and all that sort of thing
     are managed by lwlib.)

     The EmacsShell widget is simply a replacement for the Shell widget
     which is able to deal with using an externally-supplied window instead
     of always creating its own.  It is not actually emacs specific, and
     should possibly have class "Shell" instead of "EmacsShell" to simplify
     the resources.

   */

  /* Hairily merged geometry */
  struct frame *f = ew->emacs_frame.frame;
  int w = FRAME_COLS (f);
  int h = FRAME_LINES (f);
  Widget wmshell = get_wm_shell ((Widget) ew);
  Dimension pixel_width, pixel_height;
  /* Each Emacs shell is now independent and top-level.  */

  if (! XtIsSubclass (wmshell, shellWidgetClass)) emacs_abort ();

  char_to_pixel_size (ew, w, h, &pixel_width, &pixel_height);
  ew->core.width = (frame_resize_pixelwise
		    ? FRAME_PIXEL_WIDTH (f)
		    : pixel_width);
  ew->core.height = (frame_resize_pixelwise
		     ? FRAME_PIXEL_HEIGHT (f)
		     : pixel_height);

  frame_size_history_add
    (f, Qset_frame_size, FRAME_TEXT_WIDTH (f), FRAME_TEXT_HEIGHT (f),
     list2i (ew->core.width, ew->core.height));
}

static void
update_wm_hints (EmacsFrame ew)
{
  Widget wmshell = get_wm_shell ((Widget) ew);
  int cw;
  int ch;
  Dimension rounded_width;
  Dimension rounded_height;
  int char_width;
  int char_height;
  int base_width;
  int base_height;

  /* This happens when the frame is just created.  */
  if (! wmshell) return;

  pixel_to_char_size (ew, ew->core.width, ew->core.height,
		      &char_width, &char_height);
  char_to_pixel_size (ew, char_width, char_height,
		      &rounded_width, &rounded_height);
  get_default_char_pixel_size (ew, &cw, &ch);

  base_width = (wmshell->core.width - ew->core.width
		+ (rounded_width - (char_width * cw)));
  base_height = (wmshell->core.height - ew->core.height
		 + (rounded_height - (char_height * ch)));

  /* This is kind of sleazy, but I can't see how else to tell it to
     make it mark the WM_SIZE_HINTS size as user specified.
   */
/*  ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;*/

  XtVaSetValues (wmshell,
		 XtNbaseWidth, (XtArgVal) base_width,
		 XtNbaseHeight, (XtArgVal) base_height,
		 XtNwidthInc, (XtArgVal) (cw),
		 XtNheightInc, (XtArgVal) (ch),
		 XtNminWidth, (XtArgVal) base_width,
		 XtNminHeight, (XtArgVal) base_height,
		 NULL);
}

void
widget_update_wm_size_hints (Widget widget)
{
  EmacsFrame ew = (EmacsFrame) widget;
  update_wm_hints (ew);
}

static void
update_various_frame_slots (EmacsFrame ew)
{
  struct frame *f = ew->emacs_frame.frame;

  f->internal_border_width = ew->emacs_frame.internal_border_width;
}

static void
update_from_various_frame_slots (EmacsFrame ew)
{
  struct frame *f = ew->emacs_frame.frame;
  struct x_output *x = f->output_data.x;

  ew->core.height = FRAME_PIXEL_HEIGHT (f) - x->menubar_height;
  ew->core.width = FRAME_PIXEL_WIDTH (f);
  ew->core.background_pixel = FRAME_BACKGROUND_PIXEL (f);
  ew->emacs_frame.internal_border_width = f->internal_border_width;
  ew->emacs_frame.foreground_pixel = FRAME_FOREGROUND_PIXEL (f);
  ew->emacs_frame.cursor_color = x->cursor_pixel;
  ew->core.border_pixel = x->border_pixel;
}

static void
EmacsFrameInitialize (Widget request, Widget new, ArgList dum1, Cardinal *dum2)
{
  EmacsFrame ew = (EmacsFrame) new;

  if (!ew->emacs_frame.frame)
    {
      fputs ("can't create an emacs frame widget without a frame\n", stderr);
      exit (1);
    }

  update_from_various_frame_slots (ew);
  set_frame_size (ew);
}

static void
resize_cb (Widget widget,
           XtPointer closure,
           XEvent *event,
           Boolean *continue_to_dispatch)
{
  EmacsFrameResize (widget);
}


static void
EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs)
{
  EmacsFrame ew = (EmacsFrame) widget;

  /* This used to contain SubstructureRedirectMask, but this turns out
     to be a problem with XIM on Solaris, and events from that mask
     don't seem to be used.  Let's check that.  */
  attrs->event_mask = (STANDARD_EVENT_SET
		       | PropertyChangeMask
		       | SubstructureNotifyMask);
  *mask |= CWEventMask;
  XtCreateWindow (widget, InputOutput, (Visual *) CopyFromParent, *mask,
		  attrs);
  /* Some ConfigureNotify events does not end up in EmacsFrameResize so
     make sure we get them all.  Seen with xfcwm4 for example.  */
  XtAddRawEventHandler (widget, StructureNotifyMask, False, resize_cb, NULL);
  update_wm_hints (ew);
}

static void
EmacsFrameDestroy (Widget widget)
{
  /* All GCs are now freed in x_free_frame_resources.  */
}

static void
EmacsFrameResize (Widget widget)
{
  EmacsFrame ew = (EmacsFrame) widget;
  struct frame *f = ew->emacs_frame.frame;
  int width, height;

  pixel_to_text_size (ew, ew->core.width, ew->core.height, &width, &height);

  frame_size_history_add
    (f, QEmacsFrameResize, width, height,
     list5 (make_fixnum (ew->core.width), make_fixnum (ew->core.height),
	    make_fixnum (FRAME_TOP_MARGIN_HEIGHT (f)),
	    make_fixnum (FRAME_SCROLL_BAR_AREA_HEIGHT (f)),
	    make_fixnum (2 * FRAME_INTERNAL_BORDER_WIDTH (f))));

  change_frame_size (f, width, height, 0, 1, 0, 1);

  update_wm_hints (ew);
  update_various_frame_slots (ew);

  cancel_mouse_face (f);
}

static XtGeometryResult
EmacsFrameQueryGeometry (Widget widget, XtWidgetGeometry *request,
			 XtWidgetGeometry *result)
{
  int mask = request->request_mode;

  if (mask & (CWWidth | CWHeight) && !frame_resize_pixelwise)
    {
      EmacsFrame ew = (EmacsFrame) widget;
      Dimension ok_width, ok_height;

      round_size_to_char (ew,
			  mask & CWWidth ? request->width : ew->core.width,
			  mask & CWHeight ? request->height : ew->core.height,
			  &ok_width, &ok_height);
      if ((mask & CWWidth) && (ok_width != request->width))
	{
	  result->request_mode |= CWWidth;
	  result->width = ok_width;
	}
      if ((mask & CWHeight) && (ok_height != request->height))
	{
	  result->request_mode |= CWHeight;
	  result->height = ok_height;
	}
    }
  return result->request_mode ? XtGeometryAlmost : XtGeometryYes;
}

/* Special entry points */
void
EmacsFrameSetCharSize (Widget widget, int columns, int rows)
{
  EmacsFrame ew = (EmacsFrame) widget;
  struct frame *f = ew->emacs_frame.frame;

  if (!frame_inhibit_resize (f, 0, Qfont)
      && !frame_inhibit_resize (f, 1, Qfont))
    x_set_window_size (f, 0, columns, rows, 0);
}

\f
void
widget_store_internal_border (Widget widget)
{
  EmacsFrame ew = (EmacsFrame) widget;
  struct frame *f = ew->emacs_frame.frame;

  ew->emacs_frame.internal_border_width = f->internal_border_width;
}

debug log:

solving 4c00e35333 ...
found 4c00e35333 in https://yhetil.org/emacs-bugs/87muc3bf9q.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me/
found e8eaf0fadf in https://git.savannah.gnu.org/cgit/emacs.git
preparing index
index prepared:
100644 e8eaf0fadf0cef41a3c8ee12988bf035e477f181	src/widget.c

applying [1/1] https://yhetil.org/emacs-bugs/87muc3bf9q.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me/
diff --git a/src/widget.c b/src/widget.c
index e8eaf0fadf..4c00e35333 100644

Checking patch src/widget.c...
Applied patch src/widget.c cleanly.

index at:
100644 4c00e3533306a468db5ac4cdf4b245f2c11b9235	src/widget.c

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).