Attempt to make redisplay more selective when changing fonts.

* frame.h (struct frame): New bitfield fonts_changed.
* dispextern.h (fonts_changed_p, adjust_glyphs): Remove declaration.
(adjust_frame_glyphs): Add prototype.
* dispnew.c (fonts_changed_p): Remove.
(adjust_glyphs): Remove becase we do not
adjust matrices on all frames at once any more.
(adjust_frame_glyphs): Block and unblock input here.
(adjust_glyph_matrix): Use fonts_changed.
(change_frame_size_1): Use adjust_frame_glyphs.
* font.c (font_open_entity): Use fonts_changed.
* frame.c (set_menu_bar_lines, Fmake_terminal_frame):
* w32fns.c (x_set_menu_bar_lines, x_set_tool_bar_lines, Fx_show_tip):
* window.c (Fdelete_other_windows_internal, Fwindow_resize_apply)
(Fsplit_window_internal, Fdelete_window_internal, grow_mini_window)
(shrink_mini_window, Fresize_mini_window_internal)
(window_scroll_pixel_based, Fset_window_configuration)
(apply_window_adjustment, Fset_window_vscroll):
* xfns.c (x_set_menu_bar_lines, x_set_tool_bar_lines, Fx_show_tip):
Use adjust_frame_glyphs.
* xdisp.c (redisplay_tool_bar, redisplay_window, try_window)
(try_window_reusing_current_matrix, try_window_id, display_line)
(IT_EXPAND_MATRIX_WIDTH): Use fonts_changed.
(redisplay_internal): Consider fonts_changed and adjust frame
matrices for each frame only if the frame is visible.  If font
has been changed on some frame during full redisplay, retry
only visible frames where the font has been actually changed.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/frame.c b/src/frame.c
index b4638ed53c..0f1560df15 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -224,7 +224,7 @@ set_menu_bar_lines (struct frame *f, Lisp_Object value, Lisp_Object oldval)
       FRAME_WINDOW_SIZES_CHANGED (f) = 1;
       FRAME_MENU_BAR_LINES (f) = nlines;
       set_menu_bar_lines_1 (f->root_window, nlines - olines);
-      adjust_glyphs (f);
+      adjust_frame_glyphs (f);
     }
 }
 
@@ -712,7 +712,7 @@ affects all frames on the same terminal device.  */)
     change_frame_size (f, height, width, 0, 0, 0);
   }
 
-  adjust_glyphs (f);
+  adjust_frame_glyphs (f);
   calculate_costs (f);
   XSETFRAME (frame, f);