Mercurial > hg > xemacs-beta
annotate src/scrollbar-x.c @ 5776:65d65b52d608
Pass character count from coding systems to buffer insertion code.
src/ChangeLog addition:
2014-01-16 Aidan Kehoe <kehoea@parhasard.net>
Pass character count information from the no-conversion and
unicode coding systems to the buffer insertion code, making
#'find-file on large buffers a little snappier (if
ERROR_CHECK_TEXT is not defined).
* file-coding.c:
* file-coding.c (coding_character_tell): New.
* file-coding.c (conversion_coding_stream_description): New.
* file-coding.c (no_conversion_convert):
Update characters_seen when decoding.
* file-coding.c (no_conversion_character_tell): New.
* file-coding.c (lstream_type_create_file_coding): Create the
no_conversion type with data.
* file-coding.c (coding_system_type_create):
Make the character_tell method available here.
* file-coding.h:
* file-coding.h (struct coding_system_methods):
Add a new character_tell() method, passing charcount information
from the coding systems to the buffer code, avoiding duplicate
bytecount-to-charcount work especially with large buffers.
* fileio.c (Finsert_file_contents_internal):
Update this to pass charcount information to
buffer_insert_string_1(), if that is available from the lstream code.
* insdel.c:
* insdel.c (buffer_insert_string_1):
Add a new CCLEN argument, giving the character count of the string
to insert. It can be -1 to indicate that te function should work
it out itself using bytecount_to_charcount(), as it used to.
* insdel.c (buffer_insert_raw_string_1):
* insdel.c (buffer_insert_lisp_string_1):
* insdel.c (buffer_insert_ascstring_1):
* insdel.c (buffer_insert_emacs_char_1):
* insdel.c (buffer_insert_from_buffer_1):
* insdel.c (buffer_replace_char):
Update these functions to use the new calling convention.
* insdel.h:
* insdel.h (buffer_insert_string):
Update this header to reflect the new buffer_insert_string_1()
argument.
* lstream.c (Lstream_character_tell): New.
Return the number of characters *read* and seen by the consumer so
far, taking into account the unget buffer, and buffered reading.
* lstream.c (Lstream_unread):
Update unget_character_count here as appropriate.
* lstream.c (Lstream_rewind):
Reset unget_character_count here too.
* lstream.h:
* lstream.h (struct lstream):
Provide the character_tell method, add a new field,
unget_character_count, giving the number of characters ever passed
to Lstream_unread().
Declare Lstream_character_tell().
Make Lstream_ungetc(), which happens to be unused, an inline
function rather than a macro, in the course of updating it to
modify unget_character_count.
* print.c (output_string):
Use the new argument to buffer_insert_string_1().
* tests.c:
* tests.c (Ftest_character_tell):
New test function.
* tests.c (syms_of_tests):
Make it available.
* unicode.c:
* unicode.c (struct unicode_coding_stream):
* unicode.c (unicode_character_tell):
New method.
* unicode.c (unicode_convert):
Update the character counter as appropriate.
* unicode.c (coding_system_type_create_unicode):
Make the character_tell method available.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Thu, 16 Jan 2014 16:27:52 +0000 |
| parents | 56144c8593a8 |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* scrollbar implementation -- X interface. |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 3 Copyright (C) 1994 Amdahl Corporation. | |
| 4 Copyright (C) 1995 Sun Microsystems, Inc. | |
| 5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>. | |
|
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6 Copyright (C) 2010 Ben Wing. |
| 428 | 7 |
| 8 This file is part of XEmacs. | |
| 9 | |
|
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10 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 11 under the terms of the GNU General Public License as published by the |
|
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12 Free Software Foundation, either version 3 of the License, or (at your |
|
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13 option) any later version. |
| 428 | 14 |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
|
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21 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 22 |
| 23 /* Synched up with: Not in FSF. */ | |
| 24 | |
| 442 | 25 /* This file Mule-ized (more like Mule-verified) by Ben Wing, 7-8-00. */ |
| 26 | |
| 428 | 27 #include <config.h> |
| 28 #include "lisp.h" | |
| 29 | |
| 872 | 30 #include "device-impl.h" |
| 31 #include "frame-impl.h" | |
| 800 | 32 #include "window.h" |
| 33 | |
| 872 | 34 #include "console-x-impl.h" |
| 428 | 35 #include "glyphs-x.h" |
| 36 #include "scrollbar-x.h" | |
| 37 | |
| 800 | 38 #include "EmacsFrame.h" |
| 428 | 39 |
| 40 static void x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 41 XtPointer client_data); | |
| 42 static void x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 43 XtPointer client_data); | |
| 44 | |
| 45 /* Used to prevent changing the size of the slider while drag | |
| 46 scrolling, under Motif. This is necessary because the Motif | |
| 47 scrollbar is incredibly stupid about updating the slider and causes | |
| 48 lots of flicker if it is done too often. */ | |
| 49 static int inhibit_slider_size_change; | |
| 50 int stupid_vertical_scrollbar_drag_hack; | |
| 51 | |
| 52 /* Doesn't work with athena */ | |
| 53 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 54 static int vertical_drag_in_progress; | |
| 55 #endif | |
| 56 | |
| 57 | |
| 58 /* A device method. */ | |
| 59 static int | |
| 60 x_inhibit_scrollbar_slider_size_change (void) | |
| 61 { | |
| 62 /* Doesn't work with Athena */ | |
| 63 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 64 return inhibit_slider_size_change; | |
| 65 #else | |
| 66 return 0; | |
| 67 #endif | |
| 68 } | |
| 69 | |
| 70 /* A device method. */ | |
| 71 static void | |
| 72 x_free_scrollbar_instance (struct scrollbar_instance *instance) | |
| 73 { | |
| 3462 | 74 if (instance->scrollbar_data) |
| 428 | 75 { |
| 3462 | 76 if (SCROLLBAR_X_NAME (instance)) |
|
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77 { |
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78 xfree (SCROLLBAR_X_NAME (instance)); |
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79 SCROLLBAR_X_NAME (instance) = 0; |
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80 } |
| 428 | 81 |
| 3462 | 82 if (SCROLLBAR_X_WIDGET (instance)) |
| 83 { | |
| 84 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance))) | |
| 85 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 428 | 86 |
| 3462 | 87 lw_destroy_all_widgets (SCROLLBAR_X_ID (instance)); |
| 88 } | |
| 89 | |
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90 xfree (instance->scrollbar_data); |
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91 instance->scrollbar_data = 0; |
| 3462 | 92 } |
| 428 | 93 } |
| 94 | |
| 95 /* A device method. */ | |
| 96 static void | |
| 97 x_release_scrollbar_instance (struct scrollbar_instance *instance) | |
| 98 { | |
| 99 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance))) | |
| 100 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 101 } | |
| 102 | |
| 103 /* A device method. */ | |
| 104 static void | |
| 105 x_create_scrollbar_instance (struct frame *f, int vertical, | |
| 106 struct scrollbar_instance *instance) | |
| 107 { | |
| 108 char buffer[32]; | |
| 109 | |
| 110 /* initialize the X specific data section. */ | |
| 111 instance->scrollbar_data = xnew_and_zero (struct x_scrollbar_data); | |
| 112 | |
| 113 SCROLLBAR_X_ID (instance) = new_lwlib_id (); | |
| 114 sprintf (buffer, "scrollbar_%d", SCROLLBAR_X_ID (instance)); | |
| 115 SCROLLBAR_X_NAME (instance) = xstrdup (buffer); | |
| 116 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) || \ | |
| 117 defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 118 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = -1; | |
| 119 #endif | |
| 120 | |
| 121 if (vertical) | |
| 122 { | |
| 123 SCROLLBAR_X_WIDGET (instance) = | |
| 124 lw_create_widget ("vertical-scrollbar", SCROLLBAR_X_NAME (instance), | |
| 125 SCROLLBAR_X_ID (instance), | |
| 126 NULL, FRAME_X_CONTAINER_WIDGET (f), 0, | |
| 127 x_update_vertical_scrollbar_callback, NULL, NULL); | |
| 128 } | |
| 129 else | |
| 130 { | |
| 131 SCROLLBAR_X_WIDGET (instance) = | |
| 132 lw_create_widget ("horizontal-scrollbar", SCROLLBAR_X_NAME (instance), | |
| 133 SCROLLBAR_X_ID (instance), | |
| 134 NULL, FRAME_X_CONTAINER_WIDGET (f), 0, | |
| 135 x_update_horizontal_scrollbar_callback, NULL, NULL); | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 #define UPDATE_DATA_FIELD(field) \ | |
| 140 if (new_##field >= 0 && \ | |
| 141 SCROLLBAR_X_POS_DATA (inst).field != new_##field) { \ | |
| 142 SCROLLBAR_X_POS_DATA (inst).field = new_##field; \ | |
| 143 inst->scrollbar_instance_changed = 1; \ | |
| 144 } | |
| 145 | |
| 146 /* A device method. */ | |
| 147 /* #### The -1 check is such a hack. */ | |
| 148 static void | |
| 149 x_update_scrollbar_instance_values (struct window *w, | |
| 150 struct scrollbar_instance *inst, | |
| 151 int new_line_increment, | |
| 152 int new_page_increment, | |
| 153 int new_minimum, int new_maximum, | |
| 154 int new_slider_size, | |
| 155 int new_slider_position, | |
| 156 int new_scrollbar_width, | |
| 157 int new_scrollbar_height, | |
| 158 int new_scrollbar_x, int new_scrollbar_y) | |
| 159 { | |
| 160 UPDATE_DATA_FIELD (line_increment); | |
| 161 UPDATE_DATA_FIELD (page_increment); | |
| 162 UPDATE_DATA_FIELD (minimum); | |
| 163 UPDATE_DATA_FIELD (maximum); | |
| 164 UPDATE_DATA_FIELD (slider_size); | |
| 165 UPDATE_DATA_FIELD (slider_position); | |
| 166 UPDATE_DATA_FIELD (scrollbar_width); | |
| 167 UPDATE_DATA_FIELD (scrollbar_height); | |
| 168 UPDATE_DATA_FIELD (scrollbar_x); | |
| 169 UPDATE_DATA_FIELD (scrollbar_y); | |
| 170 | |
| 171 /* This doesn't work with Athena, why? */ | |
| 172 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 173 if (w && !vertical_drag_in_progress) | |
| 174 { | |
| 175 int new_vov = SCROLLBAR_X_POS_DATA (inst).slider_position; | |
| 176 int new_vows = marker_position (w->start[CURRENT_DISP]); | |
| 177 | |
| 178 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) != new_vov) | |
| 179 { | |
| 180 SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) = new_vov; | |
| 181 inst->scrollbar_instance_changed = 1; | |
| 182 } | |
| 183 if (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) != new_vows) | |
| 184 { | |
| 185 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) = new_vows; | |
| 186 inst->scrollbar_instance_changed = 1; | |
| 187 } | |
| 188 } | |
| 189 #endif | |
| 190 } | |
| 191 | |
| 192 /* Used by x_update_scrollbar_instance_status. */ | |
| 193 static void | |
| 194 update_one_scrollbar_bs (struct frame *f, Widget sb_widget) | |
| 195 { | |
| 196 Boolean use_backing_store; | |
| 197 | |
| 198 Xt_GET_VALUE (FRAME_X_TEXT_WIDGET (f), XtNuseBackingStore, &use_backing_store); | |
| 199 | |
| 200 if (use_backing_store && sb_widget) | |
| 201 { | |
| 202 unsigned long mask = CWBackingStore; | |
| 203 XSetWindowAttributes attrs; | |
| 204 | |
| 205 attrs.backing_store = Always; | |
| 206 XChangeWindowAttributes (XtDisplay (sb_widget), | |
| 207 XtWindow (sb_widget), | |
| 208 mask, | |
| 209 &attrs); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 /* Create a widget value structure for passing down to lwlib so that | |
| 214 it can update the scrollbar widgets. Used by | |
| 215 x_update_scrollbar_instance_status. */ | |
| 216 static widget_value * | |
| 217 scrollbar_instance_to_widget_value (struct scrollbar_instance *instance) | |
| 218 { | |
| 219 widget_value *wv; | |
| 220 | |
| 221 wv = xmalloc_widget_value (); | |
| 222 /* #### maybe should add malloc_scrollbar_values to resource these? */ | |
| 223 wv->scrollbar_data = xnew (scrollbar_values); | |
| 224 | |
| 225 wv->name = SCROLLBAR_X_NAME (instance); | |
| 436 | 226 wv->name = xstrdup (wv->name); |
| 428 | 227 wv->value = 0; |
| 228 wv->key = 0; | |
| 229 wv->enabled = instance->scrollbar_is_active; | |
| 230 wv->selected = 0; | |
| 231 wv->call_data = NULL; | |
| 232 | |
| 233 *wv->scrollbar_data = SCROLLBAR_X_POS_DATA (instance); | |
| 234 | |
| 235 wv->next = NULL; | |
| 236 | |
| 237 return wv; | |
| 238 } | |
| 239 | |
| 240 /* Used by x_update_scrollbar_instance_status. */ | |
| 241 static void | |
| 242 update_one_widget_scrollbar_pointer (struct window *w, Widget wid) | |
| 243 { | |
| 244 if (POINTER_IMAGE_INSTANCEP (w->scrollbar_pointer)) | |
| 245 { | |
| 246 XDefineCursor (XtDisplay (wid), XtWindow (wid), | |
| 247 XIMAGE_INSTANCE_X_CURSOR (w->scrollbar_pointer)); | |
| 248 XSync (XtDisplay (wid), False); | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 /* A device method. */ | |
| 253 static void | |
| 254 x_update_scrollbar_instance_status (struct window *w, int active, int size, | |
| 255 struct scrollbar_instance *instance) | |
| 256 { | |
| 257 struct frame *f = XFRAME (w->frame); | |
| 258 Boolean managed = XtIsManaged (SCROLLBAR_X_WIDGET (instance)); | |
| 259 | |
| 260 if (active && size) | |
| 261 { | |
| 262 widget_value *wv = scrollbar_instance_to_widget_value (instance); | |
| 263 | |
| 264 if (instance->scrollbar_instance_changed) | |
| 265 { | |
| 266 lw_modify_all_widgets (SCROLLBAR_X_ID (instance), wv, 0); | |
| 267 instance->scrollbar_instance_changed = 0; | |
| 268 } | |
| 269 | |
| 270 if (!managed) | |
| 271 { | |
| 272 XtManageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 273 if (XtWindow (SCROLLBAR_X_WIDGET (instance))) | |
| 274 { | |
| 275 /* Raise this window so that it's visible on top of the | |
| 276 text window below it. */ | |
| 277 XRaiseWindow (XtDisplay (SCROLLBAR_X_WIDGET (instance)), | |
| 278 XtWindow (SCROLLBAR_X_WIDGET (instance))); | |
| 279 update_one_widget_scrollbar_pointer | |
| 280 (w, SCROLLBAR_X_WIDGET (instance)); | |
| 281 if (!SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance)) | |
| 282 { | |
| 283 update_one_scrollbar_bs (f, SCROLLBAR_X_WIDGET (instance)); | |
| 284 SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance) = 1; | |
| 285 } | |
| 286 } | |
| 287 } | |
| 288 | |
|
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diff
changeset
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289 assert (wv->scrollbar_data); |
| 436 | 290 free_widget_value_tree (wv); |
| 428 | 291 } |
| 292 else if (managed) | |
| 293 { | |
| 294 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 295 /* This isn't needed with Athena Scrollbars. It might not be needed */ | |
| 296 /* with Motif scrollbars (it is apparently needed with Lesstif). */ | |
| 297 XtUngrabKeyboard (SCROLLBAR_X_WIDGET (instance), CurrentTime); | |
| 298 #endif | |
| 299 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 enum x_scrollbar_loop | |
| 304 { | |
| 305 X_FIND_SCROLLBAR_WINDOW_MIRROR, | |
| 306 X_SET_SCROLLBAR_POINTER, | |
| 307 X_WINDOW_IS_SCROLLBAR, | |
| 308 X_UPDATE_FRAME_SCROLLBARS | |
| 309 }; | |
| 310 | |
| 311 static struct window_mirror * | |
| 312 x_scrollbar_loop (enum x_scrollbar_loop type, Lisp_Object window, | |
| 313 struct window_mirror *mir, | |
| 314 LWLIB_ID id, Window x_win) | |
| 315 { | |
| 316 struct window_mirror *retval = NULL; | |
| 317 | |
| 318 while (mir) | |
| 319 { | |
| 320 struct scrollbar_instance *vinstance = mir->scrollbar_vertical_instance; | |
| 321 struct scrollbar_instance *hinstance = mir->scrollbar_horizontal_instance; | |
| 322 struct window *w = XWINDOW (window); | |
| 323 | |
| 324 if (mir->vchild) | |
| 325 retval = x_scrollbar_loop (type, w->vchild, mir->vchild, id, x_win); | |
| 326 else if (mir->hchild) | |
| 327 retval = x_scrollbar_loop (type, w->hchild, mir->hchild, id, x_win); | |
| 328 if (retval) | |
| 329 return retval; | |
| 330 | |
| 331 if (hinstance || vinstance) | |
| 332 { | |
| 333 switch (type) | |
| 334 { | |
| 335 case X_FIND_SCROLLBAR_WINDOW_MIRROR: | |
| 336 if ((vinstance && SCROLLBAR_X_ID (vinstance) == id) || | |
| 337 (hinstance && SCROLLBAR_X_ID (hinstance) == id)) | |
| 338 return mir; | |
| 339 break; | |
| 340 case X_UPDATE_FRAME_SCROLLBARS: | |
| 341 if (!mir->vchild && !mir->hchild) | |
| 342 update_window_scrollbars (w, mir, 1, 0); | |
| 343 break; | |
| 344 case X_SET_SCROLLBAR_POINTER: | |
| 345 if (!mir->vchild && !mir->hchild) | |
| 346 { | |
| 347 Widget widget; | |
| 348 | |
| 349 widget = SCROLLBAR_X_WIDGET (hinstance); | |
| 350 if (widget && XtIsManaged (widget)) | |
| 351 update_one_widget_scrollbar_pointer (w, widget); | |
| 352 | |
| 353 widget = SCROLLBAR_X_WIDGET (vinstance); | |
| 354 if (widget && XtIsManaged (widget)) | |
| 355 update_one_widget_scrollbar_pointer (w, widget); | |
| 356 } | |
| 357 break; | |
| 358 case X_WINDOW_IS_SCROLLBAR: | |
| 359 if (!mir->vchild && !mir->hchild) | |
| 360 { | |
| 361 Widget widget; | |
| 362 | |
| 363 widget = SCROLLBAR_X_WIDGET (hinstance); | |
| 364 if (widget && XtIsManaged (widget) && | |
| 365 XtWindow (widget) == x_win) | |
| 366 return (struct window_mirror *) 1; | |
| 367 | |
| 368 widget = SCROLLBAR_X_WIDGET (vinstance); | |
| 369 if (widget && XtIsManaged (widget) && | |
| 370 XtWindow (widget) == x_win) | |
| 371 return (struct window_mirror *) 1; | |
| 372 } | |
| 373 break; | |
| 374 default: | |
| 2500 | 375 ABORT (); |
| 428 | 376 } |
| 377 } | |
| 378 | |
| 379 mir = mir->next; | |
| 380 window = w->next; | |
| 381 } | |
| 382 | |
| 383 return NULL; | |
| 384 } | |
| 385 | |
| 386 /* Used by callbacks. */ | |
| 387 static struct window_mirror * | |
| 388 find_scrollbar_window_mirror (struct frame *f, LWLIB_ID id) | |
| 389 { | |
| 390 if (f->mirror_dirty) | |
| 391 update_frame_window_mirror (f); | |
| 392 return x_scrollbar_loop (X_FIND_SCROLLBAR_WINDOW_MIRROR, f->root_window, | |
| 617 | 393 XWINDOW_MIRROR (f->root_mirror), id, (Window) NULL); |
| 428 | 394 } |
| 395 | |
| 396 /* | |
| 397 * This is the only callback provided for vertical scrollbars. It | |
| 398 * should be able to handle all of the scrollbar events in | |
| 399 * scroll_action (see lwlib.h). The client data will be of type | |
| 400 * scroll_event (see lwlib.h). */ | |
| 401 static void | |
| 402 x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 403 XtPointer client_data) | |
| 404 { | |
| 405 /* This function can GC */ | |
| 406 scroll_event *data = (scroll_event *) client_data; | |
| 407 struct device *d = get_device_from_display (XtDisplay (widget)); | |
| 408 struct frame *f = x_any_window_to_frame (d, XtWindow (widget)); | |
| 409 Lisp_Object win, frame; | |
| 410 struct scrollbar_instance *instance; | |
| 411 struct window_mirror *mirror; | |
| 412 | |
| 413 if (!f) | |
| 414 return; | |
| 415 | |
| 416 mirror = find_scrollbar_window_mirror (f, id); | |
| 442 | 417 if (!mirror) |
| 418 return; | |
| 419 | |
| 428 | 420 win = real_window (mirror, 1); |
| 421 | |
| 422 if (NILP (win)) | |
| 423 return; | |
| 424 instance = mirror->scrollbar_vertical_instance; | |
| 425 frame = WINDOW_FRAME (XWINDOW (win)); | |
| 426 | |
| 427 /* It seems that this is necessary whenever signal_special_Xt_user_event() | |
| 428 is called. #### Why??? */ | |
| 429 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d); | |
| 430 | |
| 431 switch (data->action) | |
| 432 { | |
| 433 case SCROLLBAR_LINE_UP: | |
| 434 signal_special_Xt_user_event (frame, Qscrollbar_line_up, win); | |
| 435 break; | |
| 436 | |
| 437 case SCROLLBAR_LINE_DOWN: | |
| 438 signal_special_Xt_user_event (frame, Qscrollbar_line_down, win); | |
| 439 break; | |
| 440 | |
| 441 /* The Athena scrollbar paging behavior is that of xterms. | |
| 442 Depending on where you click the size of the page varies. | |
| 443 Motif always does a standard Emacs page. */ | |
| 444 case SCROLLBAR_PAGE_UP: | |
| 445 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \ | |
| 446 !defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 447 { | |
| 448 double tmp = ((double) data->slider_value / | |
| 449 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height); | |
| 450 double line = tmp * | |
| 451 (double) window_displayed_height (XWINDOW (win)); | |
| 452 | |
| 453 if (line > -1.0) | |
| 454 line = -1.0; | |
| 455 signal_special_Xt_user_event (frame, Qscrollbar_page_up, | |
|
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456 Fcons (win, make_fixnum ((int) line))); |
| 428 | 457 } |
| 458 #else | |
| 459 signal_special_Xt_user_event (frame, Qscrollbar_page_up, | |
| 460 Fcons (win, Qnil)); | |
| 461 #endif | |
| 462 break; | |
| 463 | |
| 464 case SCROLLBAR_PAGE_DOWN: | |
| 465 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \ | |
| 466 !defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 467 { | |
| 468 double tmp = ((double) data->slider_value / | |
| 469 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height); | |
| 470 double line = tmp * | |
| 471 (double) window_displayed_height (XWINDOW (win)); | |
| 472 | |
| 473 if (SCROLLBAR_X_POS_DATA(instance).maximum > | |
| 474 (SCROLLBAR_X_POS_DATA(instance).slider_size + SCROLLBAR_X_POS_DATA(instance).slider_position)) | |
| 475 { | |
| 476 if (line < 1.0) | |
| 477 line = 1.0; | |
| 478 signal_special_Xt_user_event (frame, Qscrollbar_page_down, | |
| 479 Fcons (win, | |
|
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480 make_fixnum ((int) line))); |
| 428 | 481 } |
| 482 } | |
| 483 #else | |
| 484 signal_special_Xt_user_event (frame, Qscrollbar_page_down, | |
| 485 Fcons (win, Qnil)); | |
| 486 #endif | |
| 487 break; | |
| 488 | |
| 489 case SCROLLBAR_TOP: | |
| 490 signal_special_Xt_user_event (frame, Qscrollbar_to_top, win); | |
| 491 break; | |
| 492 | |
| 493 case SCROLLBAR_BOTTOM: | |
| 494 signal_special_Xt_user_event (frame, Qscrollbar_to_bottom, win); | |
| 495 break; | |
| 496 | |
| 497 | |
| 498 case SCROLLBAR_CHANGE: | |
| 499 inhibit_slider_size_change = 0; | |
| 500 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 501 vertical_drag_in_progress = 0; | |
| 502 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value; | |
| 503 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) = | |
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504 XFIXNUM (Fwindow_start (win)); |
| 428 | 505 #else |
| 506 stupid_vertical_scrollbar_drag_hack = 0; | |
| 507 #endif | |
| 508 break; | |
| 509 | |
| 510 case SCROLLBAR_DRAG: | |
| 511 { | |
| 512 int value; | |
| 513 | |
| 514 inhibit_slider_size_change = 1; | |
| 515 | |
| 516 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 517 /* Doing drags with Motif-like scrollbars is a mess, since we | |
| 518 want to avoid having the window position jump when you | |
| 519 first grab the scrollbar, but we also want to ensure that | |
| 520 you can scroll all the way to the top or bottom of the | |
| 521 buffer. This can all be replaced with something sane when | |
| 522 we get line-based scrolling. */ | |
| 523 | |
| 524 vertical_drag_in_progress = 1; | |
| 525 | |
| 526 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) < 0) | |
| 527 { | |
| 528 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value; | |
| 529 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) = | |
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530 XFIXNUM (Fwindow_start (win)); |
| 428 | 531 } |
| 532 | |
| 533 /* Could replace this piecewise linear scrolling with a | |
| 534 quadratic through the three points, but I'm not sure that | |
| 535 would feel any nicer in practice. */ | |
| 536 if (data->slider_value < SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)) | |
| 537 { | |
| 538 /* We've dragged up; slide linearly from original position to | |
| 539 window-start=data.minimum, slider-value=data.minimum. */ | |
| 540 | |
| 541 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 542 <= SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 543 { | |
| 544 /* shouldn't get here, but just in case */ | |
| 545 value = SCROLLBAR_X_POS_DATA (instance).minimum; | |
| 546 } | |
| 547 else | |
| 548 { | |
| 549 value = (int) | |
| 550 (SCROLLBAR_X_POS_DATA (instance).minimum | |
| 551 + (((double) | |
| 552 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) | |
| 553 - SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 554 * (data->slider_value - | |
| 555 SCROLLBAR_X_POS_DATA (instance).minimum)) | |
| 556 / (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 557 - SCROLLBAR_X_POS_DATA (instance).minimum))); | |
| 558 } | |
| 559 } | |
| 560 else | |
| 561 { | |
| 562 /* We've dragged down; slide linearly from original position to | |
| 563 window-start=data.maximum, slider-value=data.maximum. */ | |
| 564 | |
| 565 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 566 >= (SCROLLBAR_X_POS_DATA (instance).maximum - | |
| 567 SCROLLBAR_X_POS_DATA (instance).slider_size)) | |
| 568 { | |
| 569 /* avoid divide by zero */ | |
| 570 value = SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance); | |
| 571 } | |
| 572 else | |
| 573 { | |
| 574 value = (int) | |
| 575 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) | |
| 576 + (((double) | |
| 577 (SCROLLBAR_X_POS_DATA (instance).maximum | |
| 578 - SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)) | |
| 579 * (data->slider_value | |
| 580 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))) | |
| 581 / (SCROLLBAR_X_POS_DATA (instance).maximum | |
| 582 - SCROLLBAR_X_POS_DATA (instance).slider_size | |
| 583 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)))); | |
| 584 } | |
| 585 } | |
| 586 #else | |
| 587 stupid_vertical_scrollbar_drag_hack = 0; | |
| 588 value = data->slider_value; | |
| 589 #endif | |
| 590 | |
| 591 if (value >= SCROLLBAR_X_POS_DATA (instance).maximum) | |
| 592 value = SCROLLBAR_X_POS_DATA (instance).maximum - 1; | |
| 593 if (value < SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 594 value = SCROLLBAR_X_POS_DATA (instance).minimum; | |
| 595 | |
| 596 signal_special_Xt_user_event (frame, Qscrollbar_vertical_drag, | |
|
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597 Fcons (win, make_fixnum (value))); |
| 428 | 598 } |
| 599 break; | |
| 600 | |
| 601 } | |
| 602 } | |
| 603 | |
| 604 /* | |
| 605 * This is the only callback provided for horizontal scrollbars. It | |
| 606 * should be able to handle all of the scrollbar events in | |
| 607 * scroll_action (see lwlib.h). The client data will be of type | |
| 608 * scroll_event (see lwlib.h). */ | |
| 609 static void | |
| 610 x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 611 XtPointer client_data) | |
| 612 { | |
| 613 scroll_event *data = (scroll_event *) client_data; | |
| 614 struct device *d = get_device_from_display (XtDisplay (widget)); | |
| 615 struct frame *f = x_any_window_to_frame (d, XtWindow (widget)); | |
| 616 Lisp_Object win, frame; | |
| 617 struct window_mirror *mirror; | |
| 618 | |
| 619 if (!f) | |
| 620 return; | |
| 621 | |
| 622 mirror = find_scrollbar_window_mirror (f, id); | |
| 442 | 623 if (!mirror) |
| 624 return; | |
| 625 | |
| 428 | 626 win = real_window (mirror, 1); |
| 627 | |
| 628 if (NILP (win)) | |
| 629 return; | |
| 630 frame = WINDOW_FRAME (XWINDOW (win)); | |
| 631 | |
| 632 /* It seems that this is necessary whenever signal_special_Xt_user_event() | |
| 633 is called. #### Why??? */ | |
| 634 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d); | |
| 635 | |
| 636 switch (data->action) | |
| 637 { | |
| 638 case SCROLLBAR_LINE_UP: | |
| 639 signal_special_Xt_user_event (frame, Qscrollbar_char_left, win); | |
| 640 break; | |
| 641 case SCROLLBAR_LINE_DOWN: | |
| 642 signal_special_Xt_user_event (frame, Qscrollbar_char_right, win); | |
| 643 break; | |
| 644 case SCROLLBAR_PAGE_UP: | |
| 645 signal_special_Xt_user_event (frame, Qscrollbar_page_left, win); | |
| 646 break; | |
| 647 case SCROLLBAR_PAGE_DOWN: | |
| 648 signal_special_Xt_user_event (frame, Qscrollbar_page_right, win); | |
| 649 break; | |
| 650 case SCROLLBAR_TOP: | |
| 651 signal_special_Xt_user_event (frame, Qscrollbar_to_left, win); | |
| 652 break; | |
| 653 case SCROLLBAR_BOTTOM: | |
| 654 signal_special_Xt_user_event (frame, Qscrollbar_to_right, win); | |
| 655 break; | |
| 656 case SCROLLBAR_CHANGE: | |
| 657 inhibit_slider_size_change = 0; | |
| 658 break; | |
| 659 case SCROLLBAR_DRAG: | |
| 660 inhibit_slider_size_change = 1; | |
| 661 /* #### Fix the damn toolkit code so they all work the same way. | |
| 662 Lucid is the one mostly wrong.*/ | |
| 663 #if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 664 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag, | |
| 665 (Fcons | |
|
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666 (win, make_fixnum (data->slider_value)))); |
| 428 | 667 #else |
| 668 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag, | |
| 669 (Fcons | |
| 670 (win, | |
|
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671 make_fixnum (data->slider_value - 1)))); |
| 428 | 672 #endif |
| 673 break; | |
| 674 default: | |
| 675 break; | |
| 676 } | |
| 677 } | |
| 678 | |
| 679 static void | |
| 680 x_scrollbar_pointer_changed_in_window (struct window *w) | |
| 681 { | |
| 793 | 682 Lisp_Object window = wrap_window (w); |
| 428 | 683 |
| 684 x_scrollbar_loop (X_SET_SCROLLBAR_POINTER, window, find_window_mirror (w), | |
| 685 0, (Window) NULL); | |
| 686 } | |
| 687 | |
| 688 /* Make sure that all scrollbars on frame are up-to-date. Called | |
| 689 directly from x_set_frame_properties in frame-x.c*/ | |
| 690 void | |
| 691 x_update_frame_scrollbars (struct frame *f) | |
| 692 { | |
| 617 | 693 x_scrollbar_loop (X_UPDATE_FRAME_SCROLLBARS, f->root_window, |
| 694 XWINDOW_MIRROR (f->root_mirror), 0, (Window) NULL); | |
| 428 | 695 } |
| 696 | |
| 697 #ifdef MEMORY_USAGE_STATS | |
| 698 | |
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699 static Bytecount |
| 2286 | 700 x_compute_scrollbar_instance_usage (struct device *UNUSED (d), |
| 428 | 701 struct scrollbar_instance *inst, |
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702 struct usage_stats *ustats) |
| 428 | 703 { |
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704 Bytecount total = 0; |
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705 struct x_scrollbar_data *data = |
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706 (struct x_scrollbar_data *) inst->scrollbar_data; |
| 428 | 707 |
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708 total += malloced_storage_size (data, sizeof (*data), ustats); |
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709 total += malloced_storage_size (data->name, 1 + strlen (data->name), |
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710 ustats); |
| 428 | 711 |
| 712 return total; | |
| 713 } | |
| 714 | |
| 715 #endif /* MEMORY_USAGE_STATS */ | |
| 716 | |
| 717 | |
| 718 /************************************************************************/ | |
| 719 /* initialization */ | |
| 720 /************************************************************************/ | |
| 721 | |
| 722 void | |
| 723 console_type_create_scrollbar_x (void) | |
| 724 { | |
| 725 CONSOLE_HAS_METHOD (x, inhibit_scrollbar_slider_size_change); | |
| 726 CONSOLE_HAS_METHOD (x, free_scrollbar_instance); | |
| 727 CONSOLE_HAS_METHOD (x, release_scrollbar_instance); | |
| 728 CONSOLE_HAS_METHOD (x, create_scrollbar_instance); | |
| 729 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_values); | |
| 730 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_status); | |
| 731 CONSOLE_HAS_METHOD (x, scrollbar_pointer_changed_in_window); | |
| 732 #ifdef MEMORY_USAGE_STATS | |
| 733 CONSOLE_HAS_METHOD (x, compute_scrollbar_instance_usage); | |
| 734 #endif /* MEMORY_USAGE_STATS */ | |
| 735 } | |
| 736 | |
| 737 void | |
| 738 reinit_vars_of_scrollbar_x (void) | |
| 739 { | |
| 740 stupid_vertical_scrollbar_drag_hack = 1; | |
| 741 } | |
| 742 | |
| 743 void | |
| 744 vars_of_scrollbar_x (void) | |
| 745 { | |
| 746 #if defined (LWLIB_SCROLLBARS_LUCID) | |
| 747 Fprovide (intern ("lucid-scrollbars")); | |
| 748 #elif defined (LWLIB_SCROLLBARS_MOTIF) | |
| 749 Fprovide (intern ("motif-scrollbars")); | |
| 750 #elif defined (LWLIB_SCROLLBARS_ATHENA) | |
| 751 Fprovide (intern ("athena-scrollbars")); | |
| 752 #endif | |
| 753 } |