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* src/dispextern.h (struct glyph_string): Remove window member (block_buffer_flips, unblock_buffer_flips) (buffer_flipping_blocked_p): Declare. * src/xterm.h (struct x_display_info): New member supports_xdbe. (struct x_output): New members draw_desc and need_buffer_flip. (FRAME_X_DRAWABLE, FRAME_X_RAW_DRAWABLE) (FRAME_X_DOUBLE_BUFFERED_P) (FRAME_X_NEED_BUFFER_FLIP): New macros. (set_up_x_back_buffer, tear_down_x_back_buffer) (initial_set_up_x_back_buffer): Declare. * src/xterm.c: Include Xdbe.h. (x_begin_cr_clip, x_fill_rectangle, x_draw_rectangle) (x_draw_vertical_window_border, x_update_end) (x_setup_relief_color, x_draw_relief_rect) (x_draw_fringe_bitmap, x_shift_glyphs_for_insert) (x_scroll_run, x_draw_hollow_cursor, x_draw_bar_cursor): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW; rename local variables appropriately; substitute calls to XClearArea with x_clear_area, which DTRT for double buffering. (x_clear_window, x_clear_area): In double-buffering mode, use rect-drawing X functions instead of XClearWindow and XClearArea, which always operate on the front buffer. (show_back_buffer): New function. (XTframe_up_to_date): Call show_back_buffer when done. (x_clear_frame, x_clear_frame_area): Remove obsolete calls to gtk_widget_queue_draw to refresh scroll bars; scroll bars are now independent X windows. (handle_one_xevent): Call font_drop_xrender_surfaces when XftDraw might need regenerating; perform buffer flip when responding to Expose events; issue front-buffer clearing commands as stopgap while we wait for redisplay. Call flush_dirty_back_buffers. (x_make_frame_visible): Un-bitrot comment; move XSETFRAME earlier in function. (x_free_frame_resources): Call tear_down_x_back_buffer when destroying frame. (x_term_init): Attempt to initialize double buffer extension. (x_flip_and_flush): New function. (x_redisplay_interface): Point to x_flip_and_flush instead of x_flip directly. (flush_dirty_back_buffers): New function. (x_create_terminal): Register buffer_flipping_unblocked_hook. * src/xftfont.c (xftfont_drop_xrender_surfaces): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. (xftfont_draw): Call x_mark_frame_dirty. (xftfont_drop_xrender_surfaces): New function. (syms_of_xftfont): Register it. * src/xfont.c (xfont_draw): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. * src/xfns.c: Include Xdbe.h. (x_set_inhibit_double_buffering, set_up_x_back_buffer) (Fx_double_buffered_p): New functions. (x_window): Call initial_set_up_x_back_buffer. (x_make_gc): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. (Fx_create_frame): Configure `inhibit-double-buffering' frame parameter. (x_create_tip_frame): Call initial_set_up_x_back_buffer. (x_frame_parm_handlers): Register x_set_inhibit_double_buffering. (syms_of_xfns): Register Sx_double_buffered_p. (x_mark_frame_dirty): Define. * src/xfaces.c (x_create_gc): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. * src/xdisp.c (remember_mouse_glyph, init_glyph_string): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. (redisplay_internal): Restart redisplay if a frame is garbaged during updating; explain why. Block buffer flips during redisplay. (redisplay_preserve_echo_area): Block buffer flip during call to redisplay_internal. (buffer_flip_blocked_depth): New variable. (block_buffer_flips, unblock_buffer_flips) (buffer_flipping_blocked_p): New functions. (init_glyph_string): Stop setting window member of struct glyph_string. * src/w32fns.c (w32_frame_parm_handlers): Add placeholder for x_set_inhibit_double_buffering. * src/termhooks.h (struct terminal): Add buffer_flipping_unblocked_hook. * src/nsfns.m (ns_frame_parm_handlers): Add placeholder for x_set_inhibit_double_buffering. * src/image.c (x_create_bitmap_from_data) (x_create_bitmap_from_file, x_create_x_image_and_pixmap) (Create_Pixmap_From_Bitmap_Data) (x_create_bitmap_from_xpm_data, xpm_load, gs_load): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW; rename local variables appropriately. * src/gtkutil.c: Include Xdbe.h. (xg_get_widget_from_map): Forward declare. (xg_clear_under_internal_border): Remove obsolete calls to refresh scroll bars. (xg_create_frame_widgets): Call initial_set_up_x_back_buffer. (xg_free_frame_widgets): Call tear_down_x_back_buffer; reset FRAME_X_DRAWABLE as well as FRAME_X_WINDOW and for the same reason. (xg_set_background_color): Set scroll bar background colors. (xg_finish_scroll_bar_creation): New function with common logic of xg_create_scroll_bar, xg_create_horizontal_scroll_bar. Force scroll bars to be real X11 windows. (xg_create_scroll_bar, xg_create_horizontal_scroll_bar): Call xg_finish_scroll_bar_creation. (xg_update_scrollbar_pos, xg_update_horizontal_scrollbar_pos): Remove obsolete calls to refresh scroll bars; fix comments. * src/ftxfont.c (ftxfont_get_gcs, ftxfont_draw_bitmap, (ftxfont_draw_background): Use FRAME_X_DRAWABLE instead of FRAME_X_WINDOW. * src/frame.c (frame_parms): Add table entry for new `inhibit-double-buffering' frame parameter (syms_of_frame): Register Qinhibit_double_buffering. * src/font.h (struct font_driver): Add new `flush_frame_caches' hook. (font_drop_xrender_surfaces): Declare. * src/font.c (font_drop_xrender_surfaces): New function. * src/Makefile.in (XDBE_LIBS, XDBE_CFLAGS): Substitute. * etc/NEWS: Mention use of double buffering * doc/lispref/frames.texi (Management Parameters): Document `inhibit-double-buffering' frame parameters. (Visibility of Frames): Document `x-double-buffered-p'. * configure.ac: Check for the X double buffer extension |
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| lisp | ||
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| m4 | ||
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| src | ||
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| .dir-locals.el | ||
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| autogen.sh | ||
| BUGS | ||
| ChangeLog.1 | ||
| ChangeLog.2 | ||
| config.bat | ||
| configure.ac | ||
| CONTRIBUTE | ||
| COPYING | ||
| GNUmakefile | ||
| INSTALL | ||
| INSTALL.REPO | ||
| make-dist | ||
| Makefile.in | ||
| README | ||
Copyright (C) 2001-2016 Free Software Foundation, Inc.
See the end of the file for license conditions.
This directory tree holds version 26.0.50 of GNU Emacs, the extensible,
customizable, self-documenting real-time display editor.
The file INSTALL in this directory says how to build and install GNU
Emacs on various systems, once you have unpacked or checked out the
entire Emacs file tree.
See the file etc/NEWS for information on new features and other
user-visible changes in recent versions of Emacs.
The file etc/PROBLEMS contains information on many common problems that
occur in building, installing and running Emacs.
The file CONTRIBUTE contains information on contributing to Emacs as a
developer.
You may encounter bugs in this release. If you do, please report
them; your bug reports are valuable contributions to the FSF, since
they allow us to notice and fix problems on machines we don't have, or
in code we don't use often. Please send bug reports to the mailing
list bug-gnu-emacs@gnu.org. If possible, use M-x report-emacs-bug.
See the "Bugs" section of the Emacs manual for more information on how
to report bugs. (The file 'BUGS' in this directory explains how you
can find and read that section using the Info files that come with
Emacs.) For a list of mailing lists related to Emacs, see
<http://savannah.gnu.org/mail/?group=emacs>. For the complete
list of GNU mailing lists, see <http://lists.gnu.org/>.
The 'etc' subdirectory contains several other files, named in capital
letters, which you might consider looking at when installing GNU
Emacs.
The file 'configure' is a shell script to acclimate Emacs to the
oddities of your processor and operating system. It creates the file
'Makefile' (a script for the 'make' program), which automates the
process of building and installing Emacs. See INSTALL for more
detailed information.
The file 'configure.ac' is the input used by the autoconf program to
construct the 'configure' script.
The shell script 'autogen.sh' generates 'configure' and other files by
running the GNU build tools autoconf and automake, which in turn use
GNU m4 and Perl. If you want to use it, you will need to install
recent versions of these build tools. This should be needed only if
you edit files like 'configure.ac' that specify Emacs's autobuild
procedure.
The file 'Makefile.in' is a template used by 'configure' to create
'Makefile'.
The file 'make-dist' is a shell script to build a distribution tar
file from the current Emacs tree, containing only those files
appropriate for distribution. If you make extensive changes to Emacs,
this script will help you distribute your version to others.
There are several subdirectories:
'src' holds the C code for Emacs (the Emacs Lisp interpreter and
its primitives, the redisplay code, and some basic editing
functions).
'lisp' holds the Emacs Lisp code for Emacs (most everything else).
'leim' holds the original source files for the generated files
in lisp/leim. These form the library of Emacs input methods,
required to type international characters that can't be
directly produced by your keyboard.
'lib' holds source code for libraries used by Emacs and its utilities
'lib-src' holds the source code for some utility programs for use by or
with Emacs, like movemail and etags.
'etc' holds miscellaneous architecture-independent data files Emacs
uses, like the tutorial text and tool bar images.
The contents of the 'lisp', 'leim', 'info', and 'doc'
subdirectories are architecture-independent too.
'info' holds the Info documentation tree for Emacs.
'doc/emacs' holds the source code for the Emacs Manual. If you modify the
manual sources, you will need the 'makeinfo' program to produce
an updated manual. 'makeinfo' is part of the GNU Texinfo
package; you need a suitably recent version of Texinfo.
'doc/lispref' holds the source code for the Emacs Lisp reference manual.
'doc/lispintro' holds the source code for the Introduction to Programming
in Emacs Lisp manual.
'msdos' holds configuration files for compiling Emacs under MS-DOS.
'nextstep' holds instructions and some other files for compiling the
Nextstep port of Emacs, for GNUstep and Mac OS X Cocoa.
'nt' holds various command files and documentation files that pertain
to building and running Emacs on Windows 9X/ME/NT/2000/XP.
'test' holds tests for various aspects of Emacs's functionality.
Building Emacs on non-Posix platforms requires tools that aren't part
of the standard distribution of the OS. The platform-specific README
files and installation instructions should list the required tools.
NOTE ON COPYRIGHT YEARS
In copyright notices where the copyright holder is the Free Software
Foundation, then where a range of years appears, this is an inclusive
range that applies to every year in the range. For example: 2005-2008
represents the years 2005, 2006, 2007, and 2008.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.