[xemacs-hg @ 2003-02-21 06:56:46 by ben] redisplay fixes et al. PROBLEMS: Add comment about Cygwin, unexec and sysmalloc. Move some non-general stuff out of general. Make a section for x86. configure.in: Add check for broken alloca in funcalls. mule/mule-cmds.el: Alias file-name to native not vice-versa. Do set EOL of native but not of process output to fix various problems and be consistent with code-init.el. code-cmds.el: Return a name not a coding system. code-init.el: Reindent. Remove `file-name' since it should always be the same as native. unicode.el: Rename to load-unicode-mapping-table as suggested by the anonymous (but rather Turnbullian) comment in unicode.c. xemacs.dsp: Add /k to default build. alloc.c: Make gc_currently_forbidden static. config.h.in, lisp.h: Move some stuff to lisp.h. console-gtk.h, console-impl.h, console-msw.h, console-x.h, event-Xt.c, event-msw.c, redisplay-gtk.c, redisplay-msw.c, redisplay-output.c, redisplay-x.c, gtk-xemacs.c: Remove duplicated code to redraw exposed area. Add deadbox method needed by the generalized redraw code. Defer redrawing if already in redisplay. frame-msw.c, event-stream.c, frame.c: Add comments about calling Lisp. debug.c, general-slots.h: Move generalish symbols to general-slots.h. doprnt.c: reindent. lisp.h, dynarr.c: Add debug code for locking a dynarr to catch invalid mods. Use in redisplay.c. eval.c: file-coding.c: Define file-name as alias for native not vice-versa. frame-gtk.c, frame-x.c: Move Qwindow_id to general-slots. dialog-msw.c, glyphs-gtk.c, glyphs-msw.c, glyphs-widget.c, glyphs-x.c, gui.c, gui.h, menubar-msw.c, menubar.c: Ensure that various glyph functions that eval within redisplay protect the evals. Same for calls to internal_equal(). Modify various functions, e.g. gui_item_*(), to protect evals within redisplay, taking an in_redisplay parameter if it's possible for them to be called both inside and outside of redisplay. gutter.c: Defer specifier-changed updating till after redisplay, if necessary, since we need to enter redisplay to do it. gutter.c: Do nothing if in redisplay. lisp.h: Add version of alloca() for use in function calls. lisp.h: Add XCAD[D+]R up to 6 D's, and aliases X1ST, X2ND, etc. frame.c, frame.h, redisplay.c, redisplay.h, signal.c, toolbar.c: Redo critical-section code and move from frame.c to redisplay.c. Require that every place inside of redisplay catch errors itself, not at the edge of the critical section (thereby bypassing the rest of redisplay and leaving things in an inconsistent state). Introduce separate means of holding frame-size changes without entering a complete critical section. Introduce "post-redisplay" methods for deferring things till after redisplay. Abort if we enter redisplay reentrantly. Disable all quit checking in redisplay since it's too dangerous. Ensure that all calls to QUIT trigger an abort if unprotected. redisplay.c, scrollbar-gtk.c, scrollbar-x.c, scrollbar.c: Create enter/exit_redisplay_critical_section_maybe() for code that needs to ensure it's in a critical section but doesn't interfere with an existing critical section. sysdep.c: Use _wexecve() when under Windows NT for Unicode correctness. text.c, text.h: Add new_dfc() functions, which return an alloca()ed value rather than requiring an lvalue. (Not really used yet; used in another workspace, to come.) Add some macros for SIZED_EXTERNAL. Update the encoding aliases after involved scrutinization of the X manual. unicode.c: Answer the anonymous but suspiciously Turnbullian questions. Rename parse-unicode-translation-table to load-unicode-mapping-table, as suggested.

--- a/src/redisplay.h	Thu Feb 20 22:52:51 2003 +0000
+++ b/src/redisplay.h	Fri Feb 21 06:57:21 2003 +0000
@@ -1,7 +1,7 @@
 /* Redisplay data structures.
    Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
    Copyright (C) 1996 Chuck Thompson.
-   Copyright (C) 1995, 1996, 2002 Ben Wing.
+   Copyright (C) 1995, 1996, 2002, 2003 Ben Wing.
 
 This file is part of XEmacs.
 
@@ -662,6 +662,10 @@
 /* Nonzero if we're in a display critical section. */
 extern int in_display;
 
+/* Whether we should delay size changes.  Broken out of
+   enter_redisplay_critical_section(). */
+extern int hold_frame_size_changes;
+
 /* Nonzero means no need to redraw the entire frame on resuming
    a suspended Emacs.  This is useful on terminals with multiple pages,
    where one page is used for Emacs and another for all else. */
@@ -827,5 +831,14 @@
 void sync_display_line_structs (struct window *w, int line, int do_blocks,
 				display_line_dynarr *cdla,
 				display_line_dynarr *ddla);
+void redisplay_redraw_exposed_area (struct frame *f, int x, int y, int width,
+				    int height);
+void register_post_redisplay_action (void (*fun) (Lisp_Object),
+				     Lisp_Object arg);
+int begin_hold_frame_size_changes (void);
+int enter_redisplay_critical_section (void);
+void exit_redisplay_critical_section (int);
+int enter_redisplay_critical_section_maybe (void);
+void exit_redisplay_critical_section_maybe (int depth);
 
 #endif /* INCLUDED_redisplay_h_ */