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Daniel Colascione c29071587c Add double-buffering support to reduce flicker
* 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
2016-10-28 19:21:39 -07:00
admin Merge from origin/emacs-25 2016-10-23 02:43:17 -07:00
build-aux Merge from origin/emacs-25 2016-05-26 12:55:06 -07:00
doc Add double-buffering support to reduce flicker 2016-10-28 19:21:39 -07:00
etc Add double-buffering support to reduce flicker 2016-10-28 19:21:39 -07:00
leim Update copyright year to 2016 2016-01-01 01:34:24 -08:00
lib Update from gnulib 2016-10-27 08:28:07 -07:00
lib-src * lib-src/etags.c (invalidate_nodes): Remove a redundant nullp test. 2016-10-12 18:24:21 +03:00
lisp Improve result of `auth-source-search' in Tramp 2016-10-28 17:08:14 +02:00
lwlib Limit <config.h>’s includes 2016-09-30 12:38:52 -07:00
m4 Update from gnulib 2016-10-27 08:28:07 -07:00
modules Rework C source files to avoid ^( 2016-03-10 07:59:19 -08:00
msdos Bump Emacs version to 26.0.50 2016-10-01 11:14:05 +03:00
nextstep Remove App Nap setting from Info.plist (bug#22993) 2016-07-10 10:24:32 +01:00
nt Merge from origin/emacs-25 2016-10-23 02:48:50 -07:00
oldXMenu Add double-buffering support to reduce flicker 2016-10-28 19:21:39 -07:00
src Add double-buffering support to reduce flicker 2016-10-28 19:21:39 -07:00
test Add more tests for Bug#24627 2016-10-27 18:06:54 +09:00
.dir-locals.el * .dir-locals.el (c-noise-macro-names): Remove NONVOLATILE. 2016-08-09 11:51:16 -07:00
.gitattributes Encode the shr tests files with trailing white space 2016-04-24 15:18:29 +02:00
.gitignore Update from gnulib 2016-09-15 15:55:30 -07:00
autogen.sh Port autogen.sh to Git 2.4 2016-05-14 10:24:41 -07:00
BUGS Use C-h r in BUGS 2012-05-21 20:28:12 -07:00
ChangeLog.1 Update copyright year to 2016 2016-01-01 01:34:24 -08:00
ChangeLog.2 Merge from origin/emacs-25 2016-09-26 13:35:56 -07:00
config.bat Fix the MSDOS build 2016-04-30 13:45:33 +03:00
configure.ac Add double-buffering support to reduce flicker 2016-10-28 19:21:39 -07:00
CONTRIBUTE Merge from origin/emacs-25 2016-10-10 07:35:32 -07:00
COPYING Restore files that I seem to have mistakenly deleted. 2010-12-03 14:45:09 +00:00
GNUmakefile autogen.sh now configures git only on request 2016-02-02 23:14:30 -08:00
INSTALL Merge from origin/emacs-25 2016-10-23 02:43:17 -07:00
INSTALL.REPO * INSTALL.REPO: Suggest Texinfo 4.13 or later. 2016-08-28 18:23:47 -07:00
make-dist Do not require that .git be a directory 2016-04-13 11:12:39 -07:00
Makefile.in Merge from origin/emacs-25 2016-02-15 14:09:12 -08:00
README Bump Emacs version to 26.0.50 2016-10-01 11:14:05 +03:00

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Copyright (C) 2001-2016 Free Software Foundation, Inc.
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This directory tree holds version 26.0.50 of GNU Emacs, the extensible,
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