Mercurial > hg > xemacs-beta
annotate src/scrollbar-msw.c @ 5366:f00192e1cd49
Examining the result of #'length: `eql', not `=', it's better style & cheaper
2011-03-08 Aidan Kehoe <kehoea@parhasard.net>
* buff-menu.el (list-buffers-noselect):
* byte-optimize.el (byte-optimize-identity):
* byte-optimize.el (byte-optimize-if):
* byte-optimize.el (byte-optimize-nth):
* byte-optimize.el (byte-optimize-nthcdr):
* bytecomp.el (byte-compile-warn-wrong-args):
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* dragdrop.el (experimental-dragdrop-drop-log-function):
* dragdrop.el (experimental-dragdrop-drop-mime-default):
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* easymenu.el (easy-menu-remove):
* faces.el (read-face-name):
* faces.el (set-face-stipple):
* files.el (file-name-non-special):
* font.el (font-combine-fonts):
* font.el (font-set-face-font):
* font.el (font-parse-rgb-components):
* font.el (font-rgb-color-p):
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* isearch-mode.el (isearch-edit-string):
* isearch-mode.el (isearch-*-char):
* isearch-mode.el (isearch-complete1):
* ldap.el (ldap-encode-country-string):
* ldap.el (ldap-decode-string):
* minibuf.el (read-file-name-internal-1):
* minibuf.el (read-non-nil-coding-system):
* minibuf.el (get-user-response):
* mouse.el (drag-window-divider):
* mule/ccl.el:
* mule/ccl.el (ccl-compile-if):
* mule/ccl.el (ccl-compile-break):
* mule/ccl.el (ccl-compile-repeat):
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* mule/ccl.el (ccl-compile-unicode-to-mule):
* mule/ccl.el (ccl-compile-lookup-integer):
* mule/ccl.el (ccl-compile-lookup-character):
* mule/ccl.el (ccl-compile-map-multiple):
* mule/ccl.el (ccl-compile-map-single):
* mule/devan-util.el (devanagari-compose-to-one-glyph):
* mule/devan-util.el (devanagari-composition-component):
* mule/mule-cmds.el (finish-set-language-environment):
* mule/viet-util.el:
* mule/viet-util.el (viet-encode-viscii-char):
* multicast.el (open-multicast-group):
* newcomment.el (comment-quote-nested):
* newcomment.el (comment-region):
* newcomment.el (comment-dwim):
* regexp-opt.el (regexp-opt-group):
* replace.el (map-query-replace-regexp):
* specifier.el (derive-device-type-from-tag-set):
* subr.el (skip-chars-quote):
* test-harness.el (test-harness-from-buffer):
* test-harness.el (batch-test-emacs):
* wid-edit.el (widget-choice-action):
* wid-edit.el (widget-symbol-prompt-internal):
* wid-edit.el (widget-color-action):
* window-xemacs.el (push-window-configuration):
* window-xemacs.el (pop-window-configuration):
* window.el (quit-window):
* x-compose.el (electric-diacritic):
It's better style, and cheaper (often one assembler instruction
vs. a C funcall in the byte code), to use `eql' instead of `='
when it's clear what numerical type a given result will be. Change
much of our code to do this, with the help of a byte-compiler
change (not comitted) that looked for calls to #'length (which
always returns an integer) in its args.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Tue, 08 Mar 2011 23:41:52 +0000 |
| parents | 71ee43b8a74d |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* scrollbar implementation -- mswindows 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>. | |
|
5169
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
6 Copyright (C) 2001, 2002, 2010 Ben Wing. |
| 428 | 7 |
| 8 This file is part of XEmacs. | |
| 9 | |
| 10 XEmacs is free software; you can redistribute it and/or modify it | |
| 11 under the terms of the GNU General Public License as published by the | |
| 12 Free Software Foundation; either version 2, or (at your option) any | |
| 13 later version. | |
| 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 | |
| 21 along with XEmacs; see the file COPYING. If not, write to | |
| 22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 Boston, MA 02111-1307, USA. */ | |
| 24 | |
| 25 /* Synched up with: Not in FSF. */ | |
| 26 | |
| 771 | 27 /* This file essentially Mule-ized (except perhaps some Unicode splitting). |
| 28 5-2000. */ | |
| 29 | |
| 428 | 30 #include <config.h> |
| 31 #include "lisp.h" | |
| 32 | |
| 800 | 33 #include "device.h" |
| 617 | 34 #include "elhash.h" |
| 428 | 35 #include "events.h" |
| 872 | 36 #include "frame-impl.h" |
| 617 | 37 #include "opaque.h" |
| 428 | 38 #include "scrollbar.h" |
| 39 #include "specifier.h" | |
| 872 | 40 #include "window-impl.h" |
| 428 | 41 |
| 872 | 42 #include "console-msw-impl.h" |
| 800 | 43 #include "scrollbar-msw.h" |
| 44 | |
| 428 | 45 /* We use a similar sort of vertical scrollbar drag hack for mswindows |
| 46 * scrollbars as is used for Motif or Lucid scrollbars under X. | |
| 47 * We do character-based instead of line-based scrolling, which can mean that | |
| 48 * without the hack it is impossible to drag to the end of a buffer. */ | |
| 49 #define VERTICAL_SCROLLBAR_DRAG_HACK | |
| 50 | |
| 51 static int vertical_drag_in_progress = 0; | |
| 673 | 52 extern Lisp_Object mswindows_find_frame (HWND hwnd); |
| 428 | 53 |
| 617 | 54 /* As long as the HWND is around, the scrollbar instance must be GC-protected. |
| 55 We have gotten crashes, apparently from trying to access a dead, freed | |
| 56 frame inside of a window mirror pointed to by the scrollbar structure. */ | |
| 57 static Lisp_Object Vmswindows_scrollbar_instance_table; | |
| 58 | |
| 428 | 59 static void |
| 60 mswindows_create_scrollbar_instance (struct frame *f, int vertical, | |
| 61 struct scrollbar_instance *sb) | |
| 62 { | |
| 63 int orientation; | |
| 617 | 64 Lisp_Object ptr; |
| 442 | 65 |
| 428 | 66 sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data); |
| 442 | 67 |
| 428 | 68 if (vertical) |
| 69 orientation = SBS_VERT; | |
| 70 else | |
| 71 orientation = SBS_HORZ; | |
| 442 | 72 |
| 428 | 73 SCROLLBAR_MSW_HANDLE (sb) = |
| 771 | 74 qxeCreateWindowEx (0, XETEXT ("SCROLLBAR"), 0, orientation|WS_CHILD, |
| 75 CW_USEDEFAULT, CW_USEDEFAULT, | |
| 76 CW_USEDEFAULT, CW_USEDEFAULT, | |
| 77 FRAME_MSWINDOWS_HANDLE (f), | |
| 78 NULL, NULL, NULL); | |
| 546 | 79 SCROLLBAR_MSW_INFO (sb).cbSize = sizeof (SCROLLINFO); |
| 428 | 80 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL; |
| 617 | 81 GetScrollInfo (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, |
| 82 &SCROLLBAR_MSW_INFO (sb)); | |
| 83 ptr = make_opaque_ptr (SCROLLBAR_MSW_HANDLE (sb)); | |
| 84 Fputhash (ptr, wrap_scrollbar_instance (sb), | |
| 85 Vmswindows_scrollbar_instance_table); | |
| 771 | 86 qxeSetWindowLong (SCROLLBAR_MSW_HANDLE (sb), GWL_USERDATA, |
| 5013 | 87 (LONG) STORE_LISP_IN_VOID (ptr)); |
| 428 | 88 } |
| 89 | |
| 90 static void | |
| 91 mswindows_free_scrollbar_instance (struct scrollbar_instance *sb) | |
| 92 { | |
| 3482 | 93 if (sb->scrollbar_data) |
| 94 { | |
| 95 void *opaque = | |
| 96 (void *) qxeGetWindowLong (SCROLLBAR_MSW_HANDLE (sb), GWL_USERDATA); | |
| 97 Lisp_Object ptr; | |
| 617 | 98 |
| 5013 | 99 ptr = GET_LISP_FROM_VOID (opaque); |
| 3482 | 100 assert (OPAQUE_PTRP (ptr)); |
| 101 ptr = Fremhash (ptr, Vmswindows_scrollbar_instance_table); | |
| 102 assert (!NILP (ptr)); | |
| 103 DestroyWindow (SCROLLBAR_MSW_HANDLE (sb)); | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
3482
diff
changeset
|
104 xfree (sb->scrollbar_data); |
|
5169
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
105 sb->scrollbar_data = 0; |
| 3482 | 106 } |
| 428 | 107 } |
| 108 | |
| 109 static void | |
| 611 | 110 unshow_that_mofo (void *handle) |
| 111 { | |
| 112 ShowScrollBar ((HWND) handle, SB_CTL, 0); | |
| 113 } | |
| 114 | |
| 115 static void | |
| 428 | 116 mswindows_release_scrollbar_instance (struct scrollbar_instance *sb) |
| 117 { | |
| 611 | 118 if (gc_in_progress) |
| 119 /* #### way bogus! need to remove the offending call. | |
| 120 see mark_redisplay(). */ | |
| 121 register_post_gc_action (unshow_that_mofo, | |
| 122 (void *) SCROLLBAR_MSW_HANDLE (sb)); | |
| 123 else | |
| 124 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0); | |
| 428 | 125 SCROLLBAR_MSW_SIZE (sb) = 0; |
| 126 } | |
| 127 | |
| 128 #define UPDATE_POS_FIELD(field) \ | |
| 129 if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \ | |
| 130 SCROLLBAR_MSW_DATA (sb)->field = new_##field; \ | |
| 131 pos_changed = 1; \ | |
| 132 } | |
| 133 | |
| 134 static void | |
| 2286 | 135 mswindows_update_scrollbar_instance_values (struct window *UNUSED (w), |
| 428 | 136 struct scrollbar_instance *sb, |
| 2286 | 137 int UNUSED (new_line_increment), |
| 138 int UNUSED (new_page_increment), | |
| 428 | 139 int new_minimum, int new_maximum, |
| 140 int new_slider_size, | |
| 141 int new_slider_position, | |
| 142 int new_scrollbar_width, | |
| 143 int new_scrollbar_height, | |
| 144 int new_scrollbar_x, | |
| 145 int new_scrollbar_y) | |
| 146 { | |
| 147 int pos_changed = 0; | |
| 771 | 148 int vert = qxeGetWindowLong (SCROLLBAR_MSW_HANDLE (sb), GWL_STYLE) & SBS_VERT; |
| 428 | 149 |
| 150 #if 0 | |
| 151 stderr_out ("[%d, %d], page = %d, pos = %d, inhibit = %d\n", new_minimum, new_maximum, | |
| 152 new_slider_size, new_slider_position,inhibit_slider_size_change); | |
| 153 #endif | |
| 154 | |
| 155 /* These might be optimized, but since at least one will change at each | |
| 156 call, it's probably not worth it. */ | |
| 157 SCROLLBAR_MSW_INFO (sb).nMin = new_minimum; | |
| 158 SCROLLBAR_MSW_INFO (sb).nMax = new_maximum; | |
| 159 SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size + 1; /* +1 for DISABLENOSCROLL */ | |
| 160 SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position; | |
| 161 #ifndef VERTICAL_SCROLLBAR_DRAG_HACK | |
| 162 SCROLLBAR_MSW_INFO (sb).fMask = ((vert && vertical_drag_in_progress) | |
| 163 ? SIF_RANGE | SIF_POS | |
| 164 : SIF_ALL | SIF_DISABLENOSCROLL); | |
| 165 #else | |
| 166 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL | SIF_DISABLENOSCROLL; | |
| 167 | |
| 168 /* Ignore XEmacs' requests to update the thumb position and size; they don't | |
| 169 * bear any relation to reality because we're reporting made-up positions */ | |
| 170 if (!(vert && vertical_drag_in_progress)) | |
| 171 #endif | |
| 172 SetScrollInfo (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb), | |
| 173 TRUE); | |
| 174 | |
| 175 UPDATE_POS_FIELD (scrollbar_x); | |
| 176 UPDATE_POS_FIELD (scrollbar_y); | |
| 177 UPDATE_POS_FIELD (scrollbar_width); | |
| 178 UPDATE_POS_FIELD (scrollbar_height); | |
| 179 | |
| 442 | 180 if (pos_changed) |
| 428 | 181 { |
| 617 | 182 MoveWindow (SCROLLBAR_MSW_HANDLE (sb), |
| 183 new_scrollbar_x, new_scrollbar_y, | |
| 184 new_scrollbar_width, new_scrollbar_height, | |
| 185 TRUE); | |
| 428 | 186 } |
| 187 } | |
| 188 | |
| 189 static void | |
| 2286 | 190 mswindows_update_scrollbar_instance_status (struct window *UNUSED (w), |
| 191 int UNUSED (active), int size, | |
| 428 | 192 struct scrollbar_instance *sb) |
| 193 { | |
| 194 if (SCROLLBAR_MSW_SIZE (sb) != size) | |
| 195 { | |
| 196 SCROLLBAR_MSW_SIZE (sb) = size; | |
| 197 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, | |
| 198 SCROLLBAR_MSW_SIZE (sb)); | |
| 199 SCROLLBAR_MSW_INFO(sb).fMask |= SIF_DISABLENOSCROLL; | |
| 200 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb), TRUE); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 void | |
| 2286 | 205 mswindows_handle_scrollbar_event (HWND hwnd, int code, int UNUSED (pos)) |
| 428 | 206 { |
| 207 struct frame *f; | |
| 208 Lisp_Object win, frame; | |
| 617 | 209 struct scrollbar_instance *sb = 0; |
| 210 void *v; | |
| 428 | 211 SCROLLINFO scrollinfo; |
| 771 | 212 int vert = qxeGetWindowLong (hwnd, GWL_STYLE) & SBS_VERT; |
| 428 | 213 int value; |
| 214 | |
| 771 | 215 v = (void *) qxeGetWindowLong (hwnd, GWL_USERDATA); |
| 617 | 216 if (!v) |
| 546 | 217 { |
| 617 | 218 /* apparently this can happen, as it was definitely necessary |
| 219 to put the check in for sb below (VERTICAL_SCROLLBAR_DRAG_HACK) */ | |
| 546 | 220 frame = mswindows_find_frame (hwnd); |
| 221 f = XFRAME (frame); | |
| 222 win = FRAME_SELECTED_WINDOW (f); | |
| 223 } | |
| 224 else | |
| 225 { | |
| 617 | 226 Lisp_Object ptr; |
| 5013 | 227 ptr = GET_LISP_FROM_VOID (v); |
| 617 | 228 assert (OPAQUE_PTRP (ptr)); |
| 229 ptr = Fgethash (ptr, Vmswindows_scrollbar_instance_table, Qnil); | |
| 230 sb = XSCROLLBAR_INSTANCE (ptr); | |
| 664 | 231 /* #### we're still hitting an abort here with 0 as the second |
| 232 parameter, although only occasionally. It seems that sometimes we | |
| 233 receive events for scrollbars that don't exist anymore. I assume | |
| 234 it must happen like this: The user does something that causes a | |
| 235 scrollbar to disappear (e.g. Alt-TAB, causing recomputation of | |
| 236 everything in the new frame) and then immediately uses the mouse | |
| 237 wheel, generating scrollbar events. Both events get posted before | |
| 238 we have a chance to process them, and in processing the first, the | |
| 239 scrollbar mentioned in the second disappears. */ | |
| 240 win = real_window (sb->mirror, 1); | |
| 241 if (NILP (win)) | |
| 242 return; | |
| 617 | 243 frame = WINDOW_FRAME (XWINDOW (win)); |
| 546 | 244 f = XFRAME (frame); |
| 245 } | |
| 428 | 246 |
| 673 | 247 /* SB_LINEDOWN == SB_CHARLEFT etc. This is the way they will |
| 248 always be - any Windows is binary compatible backward with | |
| 249 old programs */ | |
| 428 | 250 |
| 251 switch (code) | |
| 252 { | |
| 253 case SB_LINEDOWN: | |
| 254 mswindows_enqueue_misc_user_event | |
| 255 (frame, vert ? Qscrollbar_line_down : Qscrollbar_char_right, win); | |
| 256 break; | |
| 442 | 257 |
| 428 | 258 case SB_LINEUP: |
| 259 mswindows_enqueue_misc_user_event | |
| 260 (frame, vert ? Qscrollbar_line_up : Qscrollbar_char_left, win); | |
| 261 break; | |
| 442 | 262 |
| 428 | 263 case SB_PAGEDOWN: |
| 264 mswindows_enqueue_misc_user_event | |
| 265 (win, vert ? Qscrollbar_page_down : Qscrollbar_page_right, | |
| 266 vert ? Fcons (win, Qnil) : win); | |
| 267 break; | |
| 268 | |
| 269 case SB_PAGEUP: | |
| 270 mswindows_enqueue_misc_user_event | |
| 271 (frame, | |
| 272 vert ? Qscrollbar_page_up : Qscrollbar_page_left, | |
| 273 vert ? Fcons (win, Qnil) : win); | |
| 274 break; | |
| 442 | 275 |
| 428 | 276 case SB_BOTTOM: |
| 277 mswindows_enqueue_misc_user_event | |
| 278 (frame, vert ? Qscrollbar_to_bottom : Qscrollbar_to_right, win); | |
| 279 break; | |
| 280 | |
| 281 case SB_TOP: | |
| 282 mswindows_enqueue_misc_user_event | |
| 283 (frame, vert ? Qscrollbar_to_top : Qscrollbar_to_left, win); | |
| 284 break; | |
| 285 | |
| 286 case SB_THUMBTRACK: | |
| 287 case SB_THUMBPOSITION: | |
| 288 scrollinfo.cbSize = sizeof(SCROLLINFO); | |
| 289 scrollinfo.fMask = SIF_ALL; | |
| 290 GetScrollInfo (hwnd, SB_CTL, &scrollinfo); | |
| 291 vertical_drag_in_progress = vert; | |
| 292 #ifdef VERTICAL_SCROLLBAR_DRAG_HACK | |
| 293 if (vert && (scrollinfo.nTrackPos > scrollinfo.nPos)) | |
| 294 /* new buffer position = | |
| 295 * buffer position at start of drag + | |
| 296 * ((text remaining in buffer at start of drag) * | |
| 297 * (amount that the thumb has been moved) / | |
| 298 * (space that remained past end of the thumb at start of drag)) */ | |
| 299 value = (int) | |
| 300 (scrollinfo.nPos | |
| 301 + (((double) | |
| 302 (scrollinfo.nMax - scrollinfo.nPos) | |
| 303 * (scrollinfo.nTrackPos - scrollinfo.nPos)) | |
| 304 / (scrollinfo.nMax - scrollinfo.nPage - scrollinfo.nPos))) | |
| 305 - 2; /* ensure that the last line doesn't disappear off screen */ | |
| 306 else | |
| 307 #endif | |
| 308 value = scrollinfo.nTrackPos; | |
| 309 mswindows_enqueue_misc_user_event | |
| 310 (frame, | |
| 311 vert ? Qscrollbar_vertical_drag : Qscrollbar_horizontal_drag, | |
| 312 Fcons (win, make_int (value))); | |
| 313 break; | |
| 314 | |
| 315 case SB_ENDSCROLL: | |
| 316 #ifdef VERTICAL_SCROLLBAR_DRAG_HACK | |
| 546 | 317 if (vertical_drag_in_progress && sb) |
| 428 | 318 /* User has just dropped the thumb - finally update it */ |
| 319 SetScrollInfo (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, | |
| 320 &SCROLLBAR_MSW_INFO (sb), TRUE); | |
| 321 #endif | |
| 322 vertical_drag_in_progress = 0; | |
| 323 break; | |
| 324 } | |
| 325 } | |
| 326 | |
| 327 static int | |
| 771 | 328 can_scroll (struct scrollbar_instance *scrollbar) |
| 428 | 329 { |
| 330 return scrollbar != NULL | |
| 331 && IsWindowVisible (SCROLLBAR_MSW_HANDLE (scrollbar)) | |
| 332 && IsWindowEnabled (SCROLLBAR_MSW_HANDLE (scrollbar)); | |
| 333 } | |
| 334 | |
| 335 int | |
| 464 | 336 mswindows_handle_mousewheel_event (Lisp_Object frame, int keys, int delta, |
| 337 POINTS where) | |
| 428 | 338 { |
| 442 | 339 int hasVertBar, hasHorzBar; /* Indicates presence of scroll bars */ |
| 428 | 340 unsigned wheelScrollLines = 0; /* Number of lines per wheel notch */ |
| 826 | 341 Lisp_Object win = Qnil, corpore, sano; |
| 464 | 342 struct window_mirror *mirror; |
| 707 | 343 int mene, _mene, tekel, upharsin; |
| 344 Charbpos mens, sana; | |
| 345 Charcount in; | |
| 346 struct window *needle_in_haystack = 0; | |
| 464 | 347 POINT donde_esta; |
| 428 | 348 |
| 464 | 349 donde_esta.x = where.x; |
| 350 donde_esta.y = where.y; | |
| 351 | |
| 352 /* Find the window to scroll */ | |
| 353 | |
| 707 | 354 /* The mouse event could actually occur outside of the emacs |
| 355 frame. */ | |
| 356 if (ScreenToClient (FRAME_MSWINDOWS_HANDLE (XFRAME (frame)), | |
| 357 &donde_esta) != 0) | |
| 358 { | |
| 819 | 359 /* stderr_out ("donde_esta: %d %d\n", donde_esta.x, donde_esta.y); */ |
| 360 pixel_to_glyph_translation (XFRAME (frame), donde_esta.x, donde_esta.y, | |
| 361 &mene, &_mene, &tekel, &upharsin, | |
| 362 &needle_in_haystack, | |
| 363 &mens, &sana, &in, &corpore, &sano); | |
| 364 | |
| 365 if (needle_in_haystack) | |
| 366 { | |
| 367 win = wrap_window (needle_in_haystack); | |
| 368 /* stderr_out ("found needle\n"); | |
| 369 debug_print (win); */ | |
| 370 } | |
| 707 | 371 } |
| 819 | 372 |
| 373 if (!needle_in_haystack) | |
| 707 | 374 { |
| 375 win = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
| 376 needle_in_haystack = XWINDOW (win); | |
| 377 } | |
| 464 | 378 |
| 707 | 379 mirror = find_window_mirror (needle_in_haystack); |
| 428 | 380 |
| 381 /* Check that there is something to scroll */ | |
| 382 hasVertBar = can_scroll (mirror->scrollbar_vertical_instance); | |
| 383 hasHorzBar = can_scroll (mirror->scrollbar_horizontal_instance); | |
| 384 if (!hasVertBar && !hasHorzBar) | |
| 385 return FALSE; | |
| 386 | |
| 387 /* No support for panning and zooming, so ignore */ | |
| 388 if (keys & (MK_SHIFT | MK_CONTROL)) | |
| 389 return FALSE; | |
| 390 | |
| 391 /* Get the number of lines per wheel delta */ | |
| 771 | 392 qxeSystemParametersInfo (SPI_GETWHEELSCROLLLINES, 0, &wheelScrollLines, 0); |
| 428 | 393 |
| 394 /* Calculate the amount to scroll */ | |
| 395 if (wheelScrollLines == WHEEL_PAGESCROLL) | |
| 396 { | |
| 397 /* Scroll by a page */ | |
| 398 Lisp_Object function; | |
| 399 if (hasVertBar) | |
| 400 function = delta > 0 ? Qscrollbar_page_up : Qscrollbar_page_down; | |
| 401 else | |
| 402 function = delta > 0 ? Qscrollbar_page_left : Qscrollbar_page_right; | |
| 403 mswindows_enqueue_misc_user_event (frame, function, Fcons (win, Qnil)); | |
| 404 } | |
| 405 else /* Scroll by a number of lines */ | |
| 406 { | |
| 407 /* Calc the number of lines to scroll */ | |
| 408 int toScroll = MulDiv (delta, wheelScrollLines, WHEEL_DELTA); | |
| 409 | |
| 410 /* Do the scroll */ | |
| 411 Lisp_Object function; | |
| 412 if (hasVertBar) | |
| 413 function = delta > 0 ? Qscrollbar_line_up : Qscrollbar_line_down; | |
| 414 else | |
| 415 function = delta > 0 ? Qscrollbar_char_left : Qscrollbar_char_right; | |
| 416 if (toScroll < 0) | |
| 417 toScroll = -toScroll; | |
| 418 while (toScroll--) | |
| 419 mswindows_enqueue_misc_user_event (frame, function, win); | |
| 420 } | |
| 421 | |
| 422 return TRUE; | |
| 423 } | |
| 424 | |
| 425 #ifdef MEMORY_USAGE_STATS | |
| 426 | |
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427 static Bytecount |
| 2286 | 428 mswindows_compute_scrollbar_instance_usage (struct device *UNUSED (d), |
| 429 struct scrollbar_instance *inst, | |
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430 struct usage_stats *ustats) |
| 428 | 431 { |
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432 struct mswindows_scrollbar_data *data = |
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433 (struct mswindows_scrollbar_data *) inst->scrollbar_data; |
| 428 | 434 |
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435 return malloced_storage_size (data, sizeof (*data), ustats); |
| 428 | 436 } |
| 437 | |
| 438 #endif /* MEMORY_USAGE_STATS */ | |
| 439 | |
| 440 /************************************************************************/ | |
| 441 /* Device-specific ghost specifiers initialization */ | |
| 442 /************************************************************************/ | |
| 443 | |
| 617 | 444 DEFUN ("mswindows-init-scrollbar-metrics", Fmswindows_init_scrollbar_metrics, |
| 445 1, 1, 0, /* | |
| 428 | 446 */ |
| 447 (locale)) | |
| 448 { | |
| 449 if (DEVICEP (locale)) | |
| 450 { | |
| 451 add_spec_to_ghost_specifier (Vscrollbar_width, | |
| 452 make_int (GetSystemMetrics (SM_CXVSCROLL)), | |
| 453 locale, Qmswindows, Qnil); | |
| 454 add_spec_to_ghost_specifier (Vscrollbar_height, | |
| 455 make_int (GetSystemMetrics (SM_CYHSCROLL)), | |
| 456 locale, Qmswindows, Qnil); | |
| 457 } | |
| 458 return Qnil; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 /************************************************************************/ | |
| 463 /* initialization */ | |
| 464 /************************************************************************/ | |
| 465 | |
| 466 void | |
| 467 console_type_create_scrollbar_mswindows (void) | |
| 468 { | |
| 469 CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance); | |
| 470 CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance); | |
| 471 CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance); | |
| 472 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values); | |
| 473 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status); | |
| 474 /* CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */ | |
| 475 #ifdef MEMORY_USAGE_STATS | |
| 476 CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage); | |
| 477 #endif | |
| 478 } | |
| 479 | |
| 480 void | |
| 617 | 481 syms_of_scrollbar_mswindows (void) |
| 428 | 482 { |
| 483 DEFSUBR (Fmswindows_init_scrollbar_metrics); | |
| 484 } | |
| 485 | |
| 486 void | |
| 617 | 487 vars_of_scrollbar_mswindows (void) |
| 428 | 488 { |
| 489 Fprovide (intern ("mswindows-scrollbars")); | |
| 490 | |
| 617 | 491 staticpro (&Vmswindows_scrollbar_instance_table); |
| 492 Vmswindows_scrollbar_instance_table = | |
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493 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, Qeq); |
| 617 | 494 } |