Mercurial > hg > xemacs-beta
view src/scrollbar.c @ 5353:38e24b8be4ea
Improve the lexical scoping in #'block, #'return-from.
lisp/ChangeLog addition:
2011-02-07 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (byte-compile-initial-macro-environment):
Shadow `block', `return-from' here, we implement them differently
when byte-compiling.
* bytecomp.el (byte-compile-active-blocks): New.
* bytecomp.el (byte-compile-block-1): New.
* bytecomp.el (byte-compile-return-from-1): New.
* bytecomp.el (return-from-1): New.
* bytecomp.el (block-1): New.
These are two aliases that exist to have their own associated
byte-compile functions, which functions implement `block' and
`return-from'.
* cl-extra.el (cl-macroexpand-all):
Fix a bug here when macros in the environment have been compiled.
* cl-macs.el (block):
* cl-macs.el (return):
* cl-macs.el (return-from):
Be more careful about lexical scope in these macros.
* cl.el:
* cl.el ('cl-block-wrapper): Removed.
* cl.el ('cl-block-throw): Removed.
These aren't needed in code generated by this XEmacs. They
shouldn't be needed in code generated by XEmacs 21.4, but if it
turns out the packages do need them, we can put them back.
2011-01-30 Mike Sperber <mike@xemacs.org>
* font-lock.el (font-lock-fontify-pending-extents): Don't fail if
`font-lock-mode' is unset, which can happen in the middle of
`revert-buffer'.
2011-01-23 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (delete):
* cl-macs.el (delq):
* cl-macs.el (remove):
* cl-macs.el (remq):
Don't use the compiler macro if these functions were given the
wrong number of arguments, as happens in lisp-tests.el.
* cl-seq.el (remove, remq): Removed.
I added these to subr.el, and forgot to remove them from here.
2011-01-22 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-setq, byte-compile-set):
Remove kludge allowing keywords' values to be set, all the code
that does that is gone.
* cl-compat.el (elt-satisfies-test-p):
* faces.el (set-face-parent):
* faces.el (face-doc-string):
* gtk-font-menu.el:
* gtk-font-menu.el (gtk-reset-device-font-menus):
* msw-font-menu.el:
* msw-font-menu.el (mswindows-reset-device-font-menus):
* package-get.el (package-get-installedp):
* select.el (select-convert-from-image-data):
* sound.el:
* sound.el (load-sound-file):
* x-font-menu.el (x-reset-device-font-menus-core):
Don't quote keywords, they're self-quoting, and the
win from backward-compatibility is sufficiently small now that the
style problem overrides it.
2011-01-22 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (block, return-from): Require that NAME be a symbol
in these macros, as always documented in the #'block docstring and
as required by Common Lisp.
* descr-text.el (unidata-initialize-unihan-database):
Correct the use of non-symbols in #'block and #'return-from in
this function.
2011-01-15 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (concatenate): Accept more complicated TYPEs in this
function, handing the sequences over to #'coerce if we don't
understand them here.
* cl-macs.el (inline): Don't proclaim #'concatenate as inline, its
compiler macro is more useful than doing that.
2011-01-11 Aidan Kehoe <kehoea@parhasard.net>
* subr.el (delete, delq, remove, remq): Move #'remove, #'remq
here, they don't belong in cl-seq.el; move #'delete, #'delq here
from fns.c, implement them in terms of #'delete*, allowing support
for sequences generally.
* update-elc.el (do-autoload-commands): Use #'delete*, not #'delq
here, now the latter's no longer dumped.
* cl-macs.el (delete, delq): Add compiler macros transforming
#'delete and #'delq to #'delete* calls.
2011-01-10 Aidan Kehoe <kehoea@parhasard.net>
* dialog.el (make-dialog-box): Correct a misplaced parenthesis
here, thank you Mats Lidell in 87zkr9gqrh.fsf@mail.contactor.se !
2011-01-02 Aidan Kehoe <kehoea@parhasard.net>
* dialog.el (make-dialog-box):
* list-mode.el (display-completion-list):
These functions used to use cl-parsing-keywords; change them to
use defun* instead, fixing the build. (Not sure what led to me
not including this change in d1b17a33450b!)
2011-01-02 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (define-star-compiler-macros):
Make sure the form has ITEM and LIST specified before attempting
to change to calls with explicit tests; necessary for some tests
in lisp-tests.el to compile correctly.
(stable-union, stable-intersection): Add compiler macros for these
functions, in the same way we do for most of the other functions
in cl-seq.el.
2011-01-01 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (dolist, dotimes, do-symbols, macrolet)
(symbol-macrolet):
Define these macros with defmacro* instead of parsing the argument
list by hand, for the sake of style and readability; use backquote
where appropriate, instead of calling #'list and and friends, for
the same reason.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* x-misc.el (device-x-display):
Provide this function, documented in the Lispref for years, but
not existing previously. Thank you Julian Bradfield, thank you
Jeff Mincy.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* cl-seq.el:
Move the heavy lifting from this file to C. Dump the
cl-parsing-keywords macro, but don't use defun* for the functions
we define that do take keywords, dynamic scope lossage makes that
not practical.
* subr.el (sort, fillarray): Move these aliases here.
(map-plist): #'nsublis is now built-in, but at this point #'eql
isn't necessarily available as a test; use #'eq.
* obsolete.el (cl-delete-duplicates): Make this available for old
compiler macros and old code.
(memql): Document that this is equivalent to #'member*, and worse.
* cl.el (adjoin, subst): Removed. These are in C.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* simple.el (assoc-ignore-case): Remove a duplicate definition of
this function (it's already in subr.el).
* iso8859-1.el (char-width):
On non-Mule, make this function equivalent to that produced by
(constantly 1), but preserve its docstring.
* subr.el (subst-char-in-string): Define this in terms of
#'substitute, #'nsubstitute.
(string-width): Define this using #'reduce and #'char-width.
(char-width): Give this a simpler definition, it makes far more
sense to check for mule at load time and redefine, as we do in
iso8859-1.el.
(store-substring): Implement this in terms of #'replace, now
#'replace is cheap.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* update-elc.el (lisp-files-needed-for-byte-compilation)
(lisp-files-needing-early-byte-compilation):
cl-macs belongs in the former, not the latter, it is as
fundamental as bytecomp.el.
2010-12-30 Aidan Kehoe <kehoea@parhasard.net>
* cl.el:
Provde the Common Lisp program-error, type-error as error
symbols. This doesn't nearly go far enough for anyone using the
Common Lisp errors.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (delete-duplicates):
If the form has an incorrect number of arguments, don't attempt a
compiler macroexpansion.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (cl-safe-expr-p):
Forms that start with the symbol lambda are also safe.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (= < > <= >=):
For these functions' compiler macros, the optimisation is safe
even if the first and the last arguments have side effects, since
they're only used the once.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (inline-side-effect-free-compiler-macros):
Unroll a loop here at macro-expansion time, so these compiler
macros are compiled. Use #'eql instead of #'eq in a couple of
places for better style.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (notany, notevery): Avoid some dynamic scope
stupidity with local variable names in these functions, when they
weren't prefixed with cl-; go into some more detail in the doc
strings.
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (side-effect-free-fns): #'remove, #'remq are
free of side-effects.
(side-effect-and-error-free-fns):
Drop dot, dot-marker from the list.
2010-11-17 Aidan Kehoe <kehoea@parhasard.net>
* cl-extra.el (coerce):
In the argument list, name the first argument OBJECT, not X; the
former name was always used in the doc string and is clearer.
Handle vector type specifications which include the length of the
target sequence, error if there's a mismatch.
* cl-macs.el (cl-make-type-test): Handle type specifications
starting with the symbol 'eql.
2010-11-14 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (eql): Don't remove the byte-compile property of this
symbol. That was necessary to override a bug in bytecomp.el where
#'eql was confused with #'eq, which bug we no longer have.
If neither expression is constant, don't attempt to handle the
expression in this compiler macro, leave it to byte-compile-eql,
which produces better code anyway.
* bytecomp.el (eq): #'eql is not the function associated with the
byte-eq byte code.
(byte-compile-eql): Add an explicit compile method for this
function, for cases where the cl-macs compiler macro hasn't
reduced it to #'eq or #'equal.
2010-10-25 Aidan Kehoe <kehoea@parhasard.net>
Add compiler macros and compilation sanity-checking for various
functions that take keywords.
* byte-optimize.el (side-effect-free-fns): #'symbol-value is
side-effect free and not error free.
* bytecomp.el (byte-compile-normal-call): Check keyword argument
lists for sanity; store information about the positions where
keyword arguments start using the new byte-compile-keyword-start
property.
* cl-macs.el (cl-const-expr-val): Take a new optional argument,
cl-not-constant, defaulting to nil, in this function; return it if
the expression is not constant.
(cl-non-fixnum-number-p): Make this into a separate function, we
want to pass it to #'every.
(eql): Use it.
(define-star-compiler-macros): Use the same code to generate the
member*, assoc* and rassoc* compiler macros; special-case some
code in #'add-to-list in subr.el.
(remove, remq): Add compiler macros for these two functions, in
preparation for #'remove being in C.
(define-foo-if-compiler-macros): Transform (remove-if-not ...) calls to
(remove ... :if-not) at compile time, which will be a real win
once the latter is in C.
(define-substitute-if-compiler-macros)
(define-subst-if-compiler-macros): Similarly for these functions.
(delete-duplicates): Change this compiler macro to use
#'plists-equal; if we don't have information about the type of
SEQUENCE at compile time, don't bother attempting to inline the
call, the function will be in C soon enough.
(equalp): Remove an old commented-out compiler macro for this, if
we want to see it it's in version control.
(subst-char-in-string): Transform this to a call to nsubstitute or
nsubstitute, if that is appropriate.
* cl.el (ldiff): Don't call setf here, this makes for a load-time
dependency problem in cl-macs.el
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* term/vt100.el:
Refer to XEmacs, not GNU Emacs, in permissions.
* term/bg-mouse.el:
* term/sup-mouse.el:
Put copyright notice in canonical "Copyright DATE AUTHOR" form.
Refer to XEmacs, not GNU Emacs, in permissions.
* site-load.el:
Add permission boilerplate.
* mule/canna-leim.el:
* alist.el:
Refer to XEmacs, not APEL/this program, in permissions.
* mule/canna-leim.el:
Remove my copyright, I've assigned it to the FSF.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* gtk.el:
* gtk-widget-accessors.el:
* gtk-package.el:
* gtk-marshal.el:
* gtk-compose.el:
* gnome.el:
Add copyright notice based on internal evidence.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* easymenu.el: Add reference to COPYING to permission notice.
* gutter.el:
* gutter-items.el:
* menubar-items.el:
Fix typo "Xmacs" in permissions notice.
2010-06-14 Stephen J. Turnbull <stephen@xemacs.org>
* auto-save.el:
* font.el:
* fontconfig.el:
* mule/kinsoku.el:
Add "part of XEmacs" text to permission notice.
2010-10-14 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (side-effect-free-fns):
* cl-macs.el (remf, getf):
* cl-extra.el (tailp, cl-set-getf, cl-do-remf):
* cl.el (ldiff, endp):
Tighten up Common Lisp compatibility for #'ldiff, #'endp, #'tailp;
add circularity checking for the first two.
#'cl-set-getf and #'cl-do-remf were Lisp implementations of
#'plist-put and #'plist-remprop; change the names to aliases,
changes the macros that use them to using #'plist-put and
#'plist-remprop directly.
2010-10-12 Aidan Kehoe <kehoea@parhasard.net>
* abbrev.el (fundamental-mode-abbrev-table, global-abbrev-table):
Create both these abbrev tables using the usual
#'define-abbrev-table calls, rather than attempting to
special-case them.
* cl-extra.el: Force cl-macs to be loaded here, if cl-extra.el is
being loaded interpreted. Previously other, later files would
redundantly call (load "cl-macs") when interpreted, it's more
reasonable to do it here, once.
* cmdloop.el (read-quoted-char-radix): Use defcustom here, we
don't have any dump-order dependencies that would prevent that.
* custom.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling, rely on cl-extra.el in the
former case and the appropriate entry in bytecomp-load-hook in the
latter. Get rid of custom-declare-variable-list, we have no
dump-time dependencies that would require it.
* faces.el (eval-when-compile): Don't load cl-macs when
interpreted or when byte-compiling.
* packages.el: Remove some inaccurate comments.
* post-gc.el (cleanup-simple-finalizers): Use #'delete-if-not
here, now the order of preloaded-file-list has been changed to
make it available.
* subr.el (custom-declare-variable-list): Remove. No need for it.
Also remove a stub define-abbrev-table from this file, given the
current order of preloaded-file-list there's no need for it.
2010-10-10 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-constp) Forms quoted with FUNCTION are
also constant.
(byte-compile-initial-macro-environment): In #'the, if FORM is
constant and does not match TYPE, warn at byte-compile time.
2010-10-10 Aidan Kehoe <kehoea@parhasard.net>
* backquote.el (bq-vector-contents, bq-list*): Remove; the former
is equivalent to (append VECTOR nil), the latter to (list* ...).
(bq-process-2): Use (append VECTOR nil) instead of using
#'bq-vector-contents to convert to a list.
(bq-process-1): Now we use list* instead of bq-list
* subr.el (list*): Moved from cl.el, since it is now required to
be available the first time a backquoted form is encountered.
* cl.el (list*): Move to subr.el.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* test-harness.el (Check-Message):
Add an omitted comma here, thank you the buildbot.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* hash-table.el (hash-table-key-list, hash-table-value-list)
(hash-table-key-value-alist, hash-table-key-value-plist):
Remove some useless #'nreverse calls in these files; our hash
tables have no order, it's not helpful to pretend they do.
* behavior.el (read-behavior):
Do the same in this file, in some code evidently copied from
hash-table.el.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* info.el (Info-insert-dir):
* format.el (format-deannotate-region):
* files.el (cd, save-buffers-kill-emacs):
Use #'some, #'every and related functions for applying boolean
operations to lists, instead of rolling our own ones that cons and
don't short-circuit.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-initial-macro-environment):
* cl-macs.el (the):
Rephrase the docstring, make its implementation when compiling
files a little nicer.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* descr-text.el (unidata-initialize-unicodedata-database)
(unidata-initialize-unihan-database, describe-char-unicode-data)
(describe-char-unicode-data):
Wrap calls to the database functions with (with-fboundp ...),
avoiding byte compile warnings on builds without support for the
database functions.
(describe-char): (reduce #'max ...), not (apply #'max ...), no
need to cons needlessly.
(describe-char): Remove a redundant lambda wrapping
#'extent-properties.
(describe-char-unicode-data): Call #'nsubst when replacing "" with
nil in the result of #'split-string, instead of consing inside
mapcar.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* x-faces.el (x-available-font-sizes):
* specifier.el (let-specifier):
* package-ui.el (pui-add-required-packages):
* msw-faces.el (mswindows-available-font-sizes):
* modeline.el (modeline-minor-mode-menu):
* minibuf.el (minibuf-directory-files):
Replace the O2N (delq nil (mapcar (lambda (W) (and X Y)) Z)) with
the ON (mapcan (lambda (W) (and X (list Y))) Z) in these files.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (= < > <= >=):
When these functions are handed more than two arguments, and those
arguments have no side effects, transform to a series of two
argument calls, avoiding funcall in the byte-compiled code.
* mule/mule-cmds.el (finish-set-language-environment):
Take advantage of this change in a function called 256 times at
startup.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el (byte-compile-function-form, byte-compile-quote)
(byte-compile-quote-form):
Warn at compile time, and error at runtime, if a (quote ...) or a
(function ...) form attempts to quote more than one object.
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (byte-optimize-apply): Transform (apply 'nconc
(mapcar ...)) to (mapcan ...); warn about use of the first idiom.
* update-elc.el (do-autoload-commands):
* packages.el (packages-find-package-library-path):
* frame.el (frame-list):
* extents.el (extent-descendants):
* etags.el (buffer-tag-table-files):
* dumped-lisp.el (preloaded-file-list):
* device.el (device-list):
* bytecomp-runtime.el (proclaim-inline, proclaim-notinline)
Use #'mapcan, not (apply #'nconc (mapcar ...) in all these files.
* bytecomp-runtime.el (eval-when-compile, eval-and-compile):
In passing, mention that these macros also evaluate the body when
interpreted.
tests/ChangeLog addition:
2011-02-07 Aidan Kehoe <kehoea@parhasard.net>
* automated/lisp-tests.el:
Test lexical scope for `block', `return-from'; add a
Known-Bug-Expect-Failure for a contorted example that fails when
byte-compiled.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 07 Feb 2011 12:01:24 +0000 |
| parents | 5ddbab03b0e6 |
| children | 308d34e9f07d |
line wrap: on
line source
/* Generic scrollbar implementation. Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. Copyright (C) 1995 Free Software Foundation, Inc. Copyright (C) 1995 Sun Microsystems, Inc. Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>. Copyright (C) 2003, 2010 Ben Wing. This file is part of XEmacs. XEmacs 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 2, or (at your option) any later version. XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: Not in FSF. */ /* This file has been Mule-ized. */ #include <config.h> #include "lisp.h" #include "buffer.h" #include "commands.h" #include "scrollbar.h" #include "device-impl.h" #include "frame-impl.h" #include "glyphs.h" #include "gutter.h" #include "window.h" Lisp_Object Qinit_scrollbar_from_resources; Lisp_Object Qscrollbar_line_up; Lisp_Object Qscrollbar_line_down; Lisp_Object Qscrollbar_page_up; Lisp_Object Qscrollbar_page_down; Lisp_Object Qscrollbar_to_top; Lisp_Object Qscrollbar_to_bottom; Lisp_Object Qscrollbar_vertical_drag; Lisp_Object Qscrollbar_char_left; Lisp_Object Qscrollbar_char_right; Lisp_Object Qscrollbar_page_left; Lisp_Object Qscrollbar_page_right; Lisp_Object Qscrollbar_to_left; Lisp_Object Qscrollbar_to_right; Lisp_Object Qscrollbar_horizontal_drag; #define DEFAULT_SCROLLBAR_WIDTH 15 #define DEFAULT_SCROLLBAR_HEIGHT 15 /* Width and height of the scrollbar. */ Lisp_Object Vscrollbar_width; Lisp_Object Vscrollbar_height; /* Scrollbar visibility specifiers */ Lisp_Object Vhorizontal_scrollbar_visible_p; Lisp_Object Vvertical_scrollbar_visible_p; /* Scrollbar location specifiers */ Lisp_Object Vscrollbar_on_left_p; Lisp_Object Vscrollbar_on_top_p; Lisp_Object Vscrollbar_pointer_glyph; EXFUN (Fcenter_to_window_line, 2); static void update_scrollbar_instance (struct window *w, int vertical, struct scrollbar_instance *instance); static const struct memory_description scrollbar_instance_description [] = { { XD_LISP_OBJECT, offsetof (struct scrollbar_instance, mirror) }, { XD_LISP_OBJECT, offsetof (struct scrollbar_instance, next) }, { XD_END } }; static Lisp_Object mark_scrollbar_instance (Lisp_Object obj) { struct scrollbar_instance *data = XSCROLLBAR_INSTANCE (obj); mark_object (wrap_window_mirror (data->mirror)); if (data->next) return wrap_scrollbar_instance (data->next); else return Qnil; } DEFINE_NODUMP_INTERNAL_LISP_OBJECT ("scrollbar-instance", scrollbar_instance, mark_scrollbar_instance, scrollbar_instance_description, struct scrollbar_instance); static void free_scrollbar_instance (struct scrollbar_instance *instance, struct frame *frame) { if (!instance) return; else { struct device *d = XDEVICE (frame->device); MAYBE_DEVMETH (d, free_scrollbar_instance, (instance)); /* not worth calling free_normal_lisp_object() -- scrollbar instances are not created that frequently and it's dangerous. */ } } static void free_window_mirror_scrollbars (struct window_mirror *mir) { free_scrollbar_instance (mir->scrollbar_vertical_instance, mir->frame); mir->scrollbar_vertical_instance = 0; free_scrollbar_instance (mir->scrollbar_horizontal_instance, mir->frame); mir->scrollbar_horizontal_instance = 0; } static struct window_mirror * free_scrollbars_loop (Lisp_Object window, struct window_mirror *mir) { struct window_mirror *retval = NULL; while (mir) { assert (!NILP (window)); if (mir->vchild) { retval = free_scrollbars_loop (XWINDOW (window)->vchild, mir->vchild); } else if (mir->hchild) { retval = free_scrollbars_loop (XWINDOW (window)->hchild, mir->hchild); } if (retval != NULL) return retval; if (mir->scrollbar_vertical_instance || mir->scrollbar_horizontal_instance) free_window_mirror_scrollbars (mir); mir = mir->next; window = XWINDOW (window)->next; } return NULL; } /* Destroy all scrollbars associated with FRAME. Only called from delete_frame_internal. */ void free_frame_scrollbars (struct frame *f) { if (!HAS_FRAMEMETH_P (f, create_scrollbar_instance)) return; if (f->mirror_dirty) update_frame_window_mirror (f); free_scrollbars_loop (f->root_window, XWINDOW_MIRROR (f->root_mirror)); while (FRAME_SB_VCACHE (f)) { struct scrollbar_instance *tofree = FRAME_SB_VCACHE (f); FRAME_SB_VCACHE (f) = FRAME_SB_VCACHE (f)->next; tofree->next = NULL; free_scrollbar_instance (tofree, f); } while (FRAME_SB_HCACHE (f)) { struct scrollbar_instance *tofree = FRAME_SB_HCACHE (f); FRAME_SB_HCACHE (f) = FRAME_SB_HCACHE (f)->next; tofree->next = NULL; free_scrollbar_instance (tofree, f); } } static struct scrollbar_instance * create_scrollbar_instance (struct frame *f, int vertical) { struct device *d = XDEVICE (f->device); Lisp_Object obj = ALLOC_NORMAL_LISP_OBJECT (scrollbar_instance); struct scrollbar_instance *instance = XSCROLLBAR_INSTANCE (obj); MAYBE_DEVMETH (d, create_scrollbar_instance, (f, vertical, instance)); return instance; } #define GET_SCROLLBAR_INSTANCE_INTERNAL(cache) \ do { \ if (FRAME_SB_##cache (f)) \ { \ struct scrollbar_instance *retval = FRAME_SB_##cache (f); \ FRAME_SB_##cache (f) = FRAME_SB_##cache (f)->next; \ retval->next = NULL; \ return retval; \ } \ } while (0) static struct scrollbar_instance * get_scrollbar_instance (struct frame *f, int vertical) { /* Check if there are any available scrollbars already in existence. */ if (vertical) GET_SCROLLBAR_INSTANCE_INTERNAL (VCACHE); else GET_SCROLLBAR_INSTANCE_INTERNAL (HCACHE); return create_scrollbar_instance (f, vertical); } #undef GET_SCROLLBAR_INSTANCE_INTERNAL #define RELEASE_SCROLLBAR_INSTANCE_INTERNAL(cache) \ do { \ if (!FRAME_SB_##cache (f)) \ { \ instance->next = NULL; \ FRAME_SB_##cache (f) = instance; \ } \ else \ { \ instance->next = FRAME_SB_##cache (f); \ FRAME_SB_##cache (f) = instance; \ } \ } while (0) static void release_scrollbar_instance (struct frame *f, int vertical, struct scrollbar_instance *instance) { /* #### should we do "instance->mir = 0;" for safety? */ if (vertical) RELEASE_SCROLLBAR_INSTANCE_INTERNAL (VCACHE); else RELEASE_SCROLLBAR_INSTANCE_INTERNAL (HCACHE); } #undef RELEASE_SCROLLBAR_INSTANCE_INTERNAL #ifdef MEMORY_USAGE_STATS struct scrollbar_instance_stats { struct usage_stats u; Bytecount device_data; }; Bytecount compute_all_scrollbar_instance_usage (struct scrollbar_instance *inst) { Bytecount total = 0; while (inst) { total += lisp_object_memory_usage (wrap_scrollbar_instance (inst)); inst = inst->next; } return total; } static void scrollbar_instance_memory_usage (Lisp_Object scrollbar_instance, struct generic_usage_stats *gustats) { struct scrollbar_instance_stats *stats = (struct scrollbar_instance_stats *) gustats; struct scrollbar_instance *inst = XSCROLLBAR_INSTANCE (scrollbar_instance); struct device *d = FRAME_XDEVICE (inst->mirror->frame); Bytecount total = 0; if (HAS_DEVMETH_P (d, compute_scrollbar_instance_usage)) total += DEVMETH (d, compute_scrollbar_instance_usage, (d, inst, &gustats->u)); stats->device_data = total; } #endif /* MEMORY_USAGE_STATS */ void update_window_scrollbars (struct window *w, struct window_mirror *mirror, int active, int horiz_only) { struct frame *f = XFRAME (w->frame); struct device *d = XDEVICE (f->device); int depth; if (!HAS_DEVMETH_P (d, create_scrollbar_instance)) return; depth = enter_redisplay_critical_section_maybe (); /* It is possible for this to get called from the mirror update routines. In that case the structure is in an indeterminate state but we know exactly what struct we are working with. So we pass it in in that case. We also take advantage of it at some other points where we know what the mirror struct is. */ if (!mirror) mirror = find_window_mirror (w); if (!mirror->scrollbar_vertical_instance && active) mirror->scrollbar_vertical_instance = get_scrollbar_instance (f, 1); if (!mirror->scrollbar_horizontal_instance && active) mirror->scrollbar_horizontal_instance = get_scrollbar_instance (f, 0); if (!horiz_only && mirror->scrollbar_vertical_instance) { int size = (active ? window_scrollbar_width (w) : 0); struct scrollbar_instance *instance; instance = mirror->scrollbar_vertical_instance; instance->scrollbar_is_active = active; instance->mirror = mirror; if (active && size) update_scrollbar_instance (w, 1, instance); MAYBE_DEVMETH (d, update_scrollbar_instance_status, (w, active, size, instance)); if (!active) { release_scrollbar_instance (f, 1, instance); mirror->scrollbar_vertical_instance = NULL; } } if (mirror->scrollbar_horizontal_instance) { int size = (active ? window_scrollbar_height (w) : 0); struct scrollbar_instance *instance; instance = mirror->scrollbar_horizontal_instance; instance->scrollbar_is_active = active; instance->mirror = mirror; if (active && size) update_scrollbar_instance (w, 0, instance); MAYBE_DEVMETH (d, update_scrollbar_instance_status, (w, active, size, instance)); if (!active) { release_scrollbar_instance (f, 0, instance); mirror->scrollbar_horizontal_instance = NULL; } } exit_redisplay_critical_section_maybe (depth); } void release_window_mirror_scrollbars (struct window_mirror *mir) { struct device *d = XDEVICE (mir->frame->device); if (!HAS_DEVMETH_P (d, create_scrollbar_instance)) return; if (mir->scrollbar_vertical_instance) { release_scrollbar_instance (mir->frame, 1, mir->scrollbar_vertical_instance); MAYBE_DEVMETH (d, release_scrollbar_instance, (mir->scrollbar_vertical_instance)); } mir->scrollbar_vertical_instance = 0; if (mir->scrollbar_horizontal_instance) { release_scrollbar_instance (mir->frame, 0, mir->scrollbar_horizontal_instance); MAYBE_DEVMETH (d, release_scrollbar_instance, (mir->scrollbar_horizontal_instance)); } mir->scrollbar_horizontal_instance = 0; } /* * If w->sb_point is on the top line then return w->sb_point else * return w->start. If flag, then return beginning point of line * which w->sb_point lies on. */ static Charbpos scrollbar_point (struct window *w, int flag) { Charbpos start_pos, end_pos, sb_pos; Lisp_Object buf; struct buffer *b; if (NILP (w->buffer)) /* non-leaf window */ return 0; start_pos = marker_position (w->start[CURRENT_DISP]); sb_pos = marker_position (w->sb_point); if (!flag && sb_pos < start_pos) return start_pos; buf = get_buffer (w->buffer, 0); if (!NILP (buf)) b = XBUFFER (buf); else return start_pos; if (flag) end_pos = find_next_newline_no_quit (b, sb_pos, -1); else end_pos = find_next_newline_no_quit (b, start_pos, 1); if (flag) return end_pos; else if (sb_pos > end_pos) return start_pos; else return sb_pos; } /* * Update a window's horizontal or vertical scrollbar. */ static void update_scrollbar_instance (struct window *w, int vertical, struct scrollbar_instance *instance) { struct frame *f = XFRAME (w->frame); struct device *d = XDEVICE (f->device); struct buffer *b = XBUFFER (w->buffer); Charbpos start_pos, end_pos, sb_pos; int scrollbar_width = window_scrollbar_width (w); int scrollbar_height = window_scrollbar_height (w); int new_line_increment = -1, new_page_increment = -1; int new_minimum = -1, new_maximum = -1; int new_slider_size = -1, new_slider_position = -1; int new_width = -1, new_height = -1, new_x = -1, new_y = -1; #if 0 struct window *new_window = 0; /* #### currently unused */ #endif end_pos = BUF_Z (b) - w->window_end_pos[CURRENT_DISP]; sb_pos = scrollbar_point (w, 0); start_pos = sb_pos; /* The end position must be strictly greater than the start position, at least for the Motify scrollbar. It shouldn't hurt anything for other scrollbar implementations. */ if (end_pos <= start_pos) end_pos = start_pos + 1; if (vertical) { new_height = WINDOW_TEXT_HEIGHT (w); new_width = scrollbar_width; } else { new_height = scrollbar_height; new_width = WINDOW_TEXT_WIDTH (w); } /* If the height and width are not greater than 0, then later on the Motif widgets will bitch and moan. */ if (new_height <= 0) new_height = 1; if (new_width <= 0) new_width = 1; assert (instance->mirror && XWINDOW (real_window(instance->mirror, 0)) == w); /* Only character-based scrollbars are implemented at the moment. Line-based will be implemented in the future. */ instance->scrollbar_is_active = 1; new_line_increment = 1; new_page_increment = 1; /* We used to check for inhibit_scrollbar_slider_size_change here, but that seems bogus. */ { int x_offset, y_offset; /* Scrollbars are always the farthest from the text area, barring gutters. */ if (vertical) { if (!NILP (w->scrollbar_on_left_p)) { x_offset = WINDOW_LEFT (w); } else { x_offset = WINDOW_RIGHT (w) - scrollbar_width; if (window_needs_vertical_divider (w)) x_offset -= window_divider_width (w); } y_offset = WINDOW_TEXT_TOP (w) + f->scrollbar_y_offset; } else { x_offset = WINDOW_TEXT_LEFT (w); y_offset = f->scrollbar_y_offset; if (!NILP (w->scrollbar_on_top_p)) { y_offset += WINDOW_TOP (w); } else { y_offset += WINDOW_TEXT_BOTTOM (w); } } new_x = x_offset; new_y = y_offset; } /* A disabled scrollbar has its slider sized to the entire height of the scrollbar. Currently the minibuffer scrollbar is disabled. */ if (!MINI_WINDOW_P (w) && vertical) { if (!DEVMETH_OR_GIVEN (d, inhibit_scrollbar_slider_size_change, (), 0)) { new_minimum = BUF_BEGV (b); new_maximum = max (BUF_ZV (b), new_minimum + 1); new_slider_size = min ((end_pos - start_pos), (new_maximum - new_minimum)); new_slider_position = sb_pos; #if 0 new_window = w; #endif } } else if (!MINI_WINDOW_P (w)) { /* The minus one is to account for the truncation glyph. */ int wcw = window_char_width (w, 0) - 1; int max_width, max_slide; if (w->max_line_len < wcw) { max_width = 1; max_slide = 1; wcw = 1; } else { max_width = w->max_line_len + 2; max_slide = max_width - wcw; } new_minimum = 0; new_maximum = max_width; new_slider_size = wcw; new_slider_position = min (w->hscroll, max_slide); } else /* MINI_WINDOW_P (w) */ { new_minimum = 1; new_maximum = 2; new_slider_size = 1; new_slider_position = 1; instance->scrollbar_is_active = 0; } DEVMETH (d, update_scrollbar_instance_values, (w, instance, new_line_increment, new_page_increment, new_minimum, new_maximum, new_slider_size, new_slider_position, new_width, new_height, new_x, new_y)); } void init_frame_scrollbars (struct frame *f) { struct device *d = XDEVICE (f->device); if (HAS_DEVMETH_P (d, create_scrollbar_instance)) { int depth = unlock_ghost_specifiers_protected (); Lisp_Object frame = wrap_frame (f); call_critical_lisp_code (XDEVICE (FRAME_DEVICE (f)), Qinit_scrollbar_from_resources, frame); unbind_to (depth); } } void init_device_scrollbars (struct device *d) { if (HAS_DEVMETH_P (d, create_scrollbar_instance)) { int depth = unlock_ghost_specifiers_protected (); Lisp_Object device = wrap_device (d); call_critical_lisp_code (d, Qinit_scrollbar_from_resources, device); unbind_to (depth); } } void init_global_scrollbars (struct device *d) { if (HAS_DEVMETH_P (d, create_scrollbar_instance)) { int depth = unlock_ghost_specifiers_protected (); call_critical_lisp_code (d, Qinit_scrollbar_from_resources, Qglobal); unbind_to (depth); } } static void vertical_scrollbar_changed_in_window (Lisp_Object UNUSED (specifier), struct window *w, Lisp_Object UNUSED (oldval)) { /* Hold on your cerebella guys. If we always show the dividers, changing scrollbar affects only how the text and scrollbar are laid out in the window. If we do not want the dividers to show up always, then we mark more drastic change, because changing divider appearance changes lotta things. Although we actually need to do this only if the scrollbar has appeared or disappeared completely at either window edge, we do this always, as users usually do not reposition scrollbars 200 times a second or so. Do you? */ if (NILP (w->vertical_divider_always_visible_p)) MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); else MARK_WINDOWS_CHANGED (w); } /* This function is called as a result of a change to the `scrollbar-pointer' glyph. */ static void scrollbar_pointer_changed_in_window (Lisp_Object UNUSED (specifier), struct window *w, Lisp_Object UNUSED (oldval)) { struct frame *f = XFRAME (WINDOW_FRAME (w)); if (f->init_finished) MAYBE_FRAMEMETH (f, scrollbar_pointer_changed_in_window, (w)); } /* #### All of the following stuff is functions that handle scrollbar actions. All of it should be moved into Lisp. This may require adding some badly-needed primitives. */ /********** vertical scrollbar stuff **********/ /* * If the original point is still visible, put the cursor back there. * Otherwise, when scrolling down stick it at the beginning of the * first visible line and when scrolling up stick it at the beginning * of the last visible line. */ /* #### This function should be moved into Lisp */ static void scrollbar_reset_cursor (Lisp_Object win, Lisp_Object orig_pt) { /* When this function is called we know that start is already accurate. We know this because either set-window-start or recenter was called immediately prior to it being called. */ Lisp_Object buf; Charbpos start_pos = XINT (Fwindow_start (win)); Charbpos ptint = XINT (orig_pt); struct window *w = XWINDOW (win); int selected = ((w == XWINDOW (Fselected_window (XFRAME (w->frame)->device))) ? 1 : 0); buf = Fwindow_buffer (win); if (NILP (buf)) return; /* the window was deleted out from under us */ if (ptint < XINT (Fwindow_start (win))) { if (selected) Fgoto_char (make_int (start_pos), buf); else Fset_window_point (win, make_int (start_pos)); } else if (!point_would_be_visible (XWINDOW (win), start_pos, ptint, 0)) { Fmove_to_window_line (make_int (-1), win); if (selected) Fbeginning_of_line (Qnil, buf); else { /* #### Taken from forward-line. */ Charbpos pos; pos = find_next_newline (XBUFFER (buf), marker_position (w->pointm[CURRENT_DISP]), -1); Fset_window_point (win, make_int (pos)); } } else { if (selected) Fgoto_char (orig_pt, buf); else Fset_window_point (win, orig_pt); } } DEFUN ("scrollbar-line-up", Fscrollbar_line_up, 1, 1, 0, /* Function called when the line-up arrow on the scrollbar is clicked. This is the little arrow at the top of the scrollbar. One argument, the scrollbar's window. You can advise this function to change the scrollbar behavior. */ (window)) { CHECK_LIVE_WINDOW (window); window_scroll (window, make_int (1), -1, ERROR_ME_NOT); zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-line-down", Fscrollbar_line_down, 1, 1, 0, /* Function called when the line-down arrow on the scrollbar is clicked. This is the little arrow at the bottom of the scrollbar. One argument, the scrollbar's window. You can advise this function to change the scrollbar behavior. */ (window)) { CHECK_LIVE_WINDOW (window); window_scroll (window, make_int (1), 1, ERROR_ME_NOT); zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-page-up", Fscrollbar_page_up, 1, 1, 0, /* Function called when the user gives the "page-up" scrollbar action. \(The way this is done can vary from scrollbar to scrollbar.) One argument, a cons containing the scrollbar's window and a value (#### document me! This value is nil for Motif/Lucid scrollbars and a number for Athena scrollbars). You can advise this function to change the scrollbar behavior. */ (object)) { Lisp_Object window = Fcar (object); CHECK_LIVE_WINDOW (window); /* Motif and Athena scrollbars behave differently, but in accordance with their standard behaviors. It is not possible to hide the differences down in lwlib because knowledge of XEmacs buffer and cursor motion routines is necessary. */ if (NILP (XCDR (object))) window_scroll (window, Qnil, -1, ERROR_ME_NOT); else { Charbpos charbpos; Lisp_Object value = Fcdr (object); CHECK_INT (value); Fmove_to_window_line (Qzero, window); /* can't use Fvertical_motion() because it moves the buffer point rather than the window's point. #### It does? Why does it take a window argument then? */ charbpos = vmotion (XWINDOW (window), XINT (Fwindow_point (window)), XINT (value), 0); Fset_window_point (window, make_int (charbpos)); Fcenter_to_window_line (Qzero, window); } zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-page-down", Fscrollbar_page_down, 1, 1, 0, /* Function called when the user gives the "page-down" scrollbar action. \(The way this is done can vary from scrollbar to scrollbar.) One argument, a cons containing the scrollbar's window and a value (#### document me! This value is nil for Motif/Lucid scrollbars and a number for Athena scrollbars). You can advise this function to change the scrollbar behavior. */ (object)) { Lisp_Object window = Fcar (object); CHECK_LIVE_WINDOW (window); /* Motif and Athena scrollbars behave differently, but in accordance with their standard behaviors. It is not possible to hide the differences down in lwlib because knowledge of XEmacs buffer and cursor motion routines is necessary. */ if (NILP (XCDR (object))) window_scroll (window, Qnil, 1, ERROR_ME_NOT); else { Lisp_Object value = Fcdr (object); CHECK_INT (value); Fmove_to_window_line (value, window); Fcenter_to_window_line (Qzero, window); } zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-to-top", Fscrollbar_to_top, 1, 1, 0, /* Function called when the user invokes the "to-top" scrollbar action. The way this is done can vary from scrollbar to scrollbar, but C-button1 on the up-arrow is very common. One argument, the scrollbar's window. You can advise this function to change the scrollbar behavior. */ (window)) { Lisp_Object orig_pt = Fwindow_point (window); Fset_window_point (window, Fpoint_min (Fwindow_buffer (window))); Fcenter_to_window_line (Qzero, window); scrollbar_reset_cursor (window, orig_pt); zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-to-bottom", Fscrollbar_to_bottom, 1, 1, 0, /* Function called when the user invokes the "to-bottom" scrollbar action. The way this is done can vary from scrollbar to scrollbar, but C-button1 on the down-arrow is very common. One argument, the scrollbar's window. You can advise this function to change the scrollbar behavior. */ (window)) { Lisp_Object orig_pt = Fwindow_point (window); Fset_window_point (window, Fpoint_max (Fwindow_buffer (window))); Fcenter_to_window_line (make_int (-3), window); scrollbar_reset_cursor (window, orig_pt); zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-vertical-drag", Fscrollbar_vertical_drag, 1, 1, 0, /* Function called when the user drags the vertical scrollbar slider. One argument, a cons containing the scrollbar's window and a value between point-min and point-max. You can advise this function to change the scrollbar behavior. */ (object)) { Charbpos start_pos; Lisp_Object orig_pt; Lisp_Object window = Fcar (object); Lisp_Object value = Fcdr (object); orig_pt = Fwindow_point (window); Fset_marker (XWINDOW (window)->sb_point, value, Fwindow_buffer (window)); start_pos = scrollbar_point (XWINDOW (window), 1); Fset_window_start (window, make_int (start_pos), Qnil); scrollbar_reset_cursor (window, orig_pt); Fsit_for(Qzero, Qnil); zmacs_region_stays = 1; return Qnil; } DEFUN ("scrollbar-set-hscroll", Fscrollbar_set_hscroll, 2, 2, 0, /* Set WINDOW's hscroll position to VALUE. This ensures that VALUE is in the proper range for the horizontal scrollbar. */ (window, value)) { struct window *w; int hscroll, wcw, max_len; CHECK_LIVE_WINDOW (window); if (!EQ (value, Qmax)) CHECK_INT (value); w = XWINDOW (window); wcw = window_char_width (w, 0) - 1; /* #### We should be able to scroll further right as long as there is a visible truncation glyph. This calculation for max is bogus. */ max_len = w->max_line_len + 2; if (EQ (value, Qmax) || (XINT (value) > (max_len - wcw))) hscroll = max_len - wcw; else hscroll = XINT (value); /* Can't allow this out of set-window-hscroll's acceptable range. */ /* #### What hell on the earth this code limits scroll size to the machine-dependent SHORT size? -- kkm */ if (hscroll < 0) hscroll = 0; else if (hscroll >= (1 << (SHORTBITS - 1)) - 1) hscroll = (1 << (SHORTBITS - 1)) - 1; if (hscroll != w->hscroll) Fset_window_hscroll (window, make_int (hscroll)); return Qnil; } /************************************************************************/ /* initialization */ /************************************************************************/ void scrollbar_objects_create (void) { #ifdef MEMORY_USAGE_STATS OBJECT_HAS_METHOD (scrollbar_instance, memory_usage); #endif } void syms_of_scrollbar (void) { INIT_LISP_OBJECT (scrollbar_instance); DEFSYMBOL (Qscrollbar_line_up); DEFSYMBOL (Qscrollbar_line_down); DEFSYMBOL (Qscrollbar_page_up); DEFSYMBOL (Qscrollbar_page_down); DEFSYMBOL (Qscrollbar_to_top); DEFSYMBOL (Qscrollbar_to_bottom); DEFSYMBOL (Qscrollbar_vertical_drag); DEFSYMBOL (Qscrollbar_char_left); DEFSYMBOL (Qscrollbar_char_right); DEFSYMBOL (Qscrollbar_page_left); DEFSYMBOL (Qscrollbar_page_right); DEFSYMBOL (Qscrollbar_to_left); DEFSYMBOL (Qscrollbar_to_right); DEFSYMBOL (Qscrollbar_horizontal_drag); DEFSYMBOL (Qinit_scrollbar_from_resources); /* #### All these functions should be moved into Lisp. See comment above. */ DEFSUBR (Fscrollbar_line_up); DEFSUBR (Fscrollbar_line_down); DEFSUBR (Fscrollbar_page_up); DEFSUBR (Fscrollbar_page_down); DEFSUBR (Fscrollbar_to_top); DEFSUBR (Fscrollbar_to_bottom); DEFSUBR (Fscrollbar_vertical_drag); DEFSUBR (Fscrollbar_set_hscroll); } void vars_of_scrollbar (void) { #ifdef MEMORY_USAGE_STATS OBJECT_HAS_PROPERTY (scrollbar_instance, memusage_stats_list, list1 (intern ("device-data"))); #endif /* MEMORY_USAGE_STATS */ DEFVAR_LISP ("scrollbar-pointer-glyph", &Vscrollbar_pointer_glyph /* *The shape of the mouse-pointer when over a scrollbar. This is a glyph; use `set-glyph-image' to change it. If unspecified in a particular domain, the window-system-provided default pointer is used. */ ); Fprovide (intern ("scrollbar")); } void specifier_vars_of_scrollbar (void) { DEFVAR_SPECIFIER ("scrollbar-width", &Vscrollbar_width /* *Width of vertical scrollbars. This is a specifier; use `set-specifier' to change it. */ ); Vscrollbar_width = make_magic_specifier (Qnatnum); set_specifier_fallback (Vscrollbar_width, #ifdef HAVE_TTY list2 (Fcons (list1 (Qtty), make_int (0)), Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_WIDTH))) #else list1 (Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_WIDTH))) #endif ); set_specifier_caching (Vscrollbar_width, offsetof (struct window, scrollbar_width), vertical_scrollbar_changed_in_window, offsetof (struct frame, scrollbar_width), frame_size_slipped, 0); DEFVAR_SPECIFIER ("scrollbar-height", &Vscrollbar_height /* *Height of horizontal scrollbars. This is a specifier; use `set-specifier' to change it. */ ); Vscrollbar_height = make_magic_specifier (Qnatnum); set_specifier_fallback (Vscrollbar_height, #ifdef HAVE_TTY list2 (Fcons (list1 (Qtty), make_int (0)), Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_HEIGHT))) #else list1 (Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_HEIGHT))) #endif ); set_specifier_caching (Vscrollbar_height, offsetof (struct window, scrollbar_height), some_window_value_changed, offsetof (struct frame, scrollbar_height), frame_size_slipped, 0); DEFVAR_SPECIFIER ("horizontal-scrollbar-visible-p", &Vhorizontal_scrollbar_visible_p /* *Whether the horizontal scrollbar is visible. This is a specifier; use `set-specifier' to change it. */ ); Vhorizontal_scrollbar_visible_p = Fmake_specifier (Qboolean); set_specifier_fallback (Vhorizontal_scrollbar_visible_p, list1 (Fcons (Qnil, Qt))); set_specifier_caching (Vhorizontal_scrollbar_visible_p, offsetof (struct window, horizontal_scrollbar_visible_p), some_window_value_changed, offsetof (struct frame, horizontal_scrollbar_visible_p), frame_size_slipped, 0); DEFVAR_SPECIFIER ("vertical-scrollbar-visible-p", &Vvertical_scrollbar_visible_p /* *Whether the vertical scrollbar is visible. This is a specifier; use `set-specifier' to change it. */ ); Vvertical_scrollbar_visible_p = Fmake_specifier (Qboolean); set_specifier_fallback (Vvertical_scrollbar_visible_p, list1 (Fcons (Qnil, Qt))); set_specifier_caching (Vvertical_scrollbar_visible_p, offsetof (struct window, vertical_scrollbar_visible_p), vertical_scrollbar_changed_in_window, offsetof (struct frame, vertical_scrollbar_visible_p), frame_size_slipped, 0); DEFVAR_SPECIFIER ("scrollbar-on-left-p", &Vscrollbar_on_left_p /* *Whether the vertical scrollbar is on the left side of window or frame. This is a specifier; use `set-specifier' to change it. */ ); Vscrollbar_on_left_p = Fmake_specifier (Qboolean); { /* Kludge. Under X, we want athena scrollbars on the left, while all other scrollbars go on the right by default. */ Lisp_Object fallback = list1 (Fcons (Qnil, Qnil)); #if defined (HAVE_X_WINDOWS) \ && !defined (LWLIB_SCROLLBARS_MOTIF) \ && !defined (LWLIB_SCROLLBARS_LUCID) \ && !defined (LWLIB_SCROLLBARS_ATHENA3D) fallback = Fcons (Fcons (list1 (Qx), Qt), fallback); #endif set_specifier_fallback (Vscrollbar_on_left_p, fallback); } set_specifier_caching (Vscrollbar_on_left_p, offsetof (struct window, scrollbar_on_left_p), vertical_scrollbar_changed_in_window, offsetof (struct frame, scrollbar_on_left_p), frame_size_slipped, 0); DEFVAR_SPECIFIER ("scrollbar-on-top-p", &Vscrollbar_on_top_p /* *Whether the horizontal scrollbar is on the top side of window or frame. This is a specifier; use `set-specifier' to change it. */ ); Vscrollbar_on_top_p = Fmake_specifier (Qboolean); set_specifier_fallback (Vscrollbar_on_top_p, list1 (Fcons (Qnil, Qnil))); set_specifier_caching (Vscrollbar_on_top_p, offsetof (struct window, scrollbar_on_top_p), some_window_value_changed, offsetof (struct frame, scrollbar_on_top_p), frame_size_slipped, 0); } void complex_vars_of_scrollbar (void) { Vscrollbar_pointer_glyph = Fmake_glyph_internal (Qpointer); set_specifier_caching (XGLYPH (Vscrollbar_pointer_glyph)->image, offsetof (struct window, scrollbar_pointer), scrollbar_pointer_changed_in_window, 0, 0, 0); }