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.
+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
static bool set_cursor_from_row (struct window *, struct glyph_row *,
struct glyph_matrix *, ptrdiff_t, ptrdiff_t,
int, int);
+static bool cursor_row_fully_visible_p (struct window *, bool, bool);
static bool update_menu_bar (struct frame *, bool, bool);
static bool try_window_reusing_current_matrix (struct window *);
static int try_window_id (struct window *);
character properties needed for reordering are not yet
available. */
it->bidi_p =
- NILP (Vpurify_flag)
+ !redisplay__inhibit_bidi
&& !NILP (BVAR (current_buffer, bidi_display_reordering))
&& it->multibyte_p;
loading loadup.el, as the necessary character property tables are
not yet available. */
it->bidi_p =
- NILP (Vpurify_flag)
+ !redisplay__inhibit_bidi
&& !NILP (BVAR (&buffer_defaults, bidi_display_reordering));
if (s == NULL)
{
ptrdiff_t ignore;
int next_face_id;
+ bool text_from_string = false;
+ /* Normally, the next buffer location is stored in
+ IT->current.pos... */
struct text_pos pos = it->current.pos;
- /* For a string from a display property, the next
- buffer position is stored in the 'position'
+ /* ...but for a string from a display property, the
+ next buffer position is stored in the 'position'
member of the iteration stack slot below the
current one, see handle_single_display_spec. By
- contrast, it->current.pos was is not yet updated
- to point to that buffer position; that will
- happen in pop_it, after we finish displaying the
- current string. Note that we already checked
- above that it->sp is positive, so subtracting one
- from it is safe. */
+ contrast, it->current.pos was not yet updated to
+ point to that buffer position; that will happen
+ in pop_it, after we finish displaying the current
+ string. Note that we already checked above that
+ it->sp is positive, so subtracting one from it is
+ safe. */
if (it->from_disp_prop_p)
- pos = (it->stack + it->sp - 1)->position;
+ {
+ int stackp = it->sp - 1;
+
+ /* Find the stack level with data from buffer. */
+ while (stackp >= 0
+ && STRINGP ((it->stack + stackp)->string))
+ stackp--;
+ if (stackp < 0)
+ {
+ /* If no stack slot was found for iterating
+ a buffer, we are displaying text from a
+ string, most probably the mode line or
+ the header line, and that string has a
+ display string on some of its
+ characters. */
+ text_from_string = true;
+ pos = it->stack[it->sp - 1].position;
+ }
+ else
+ pos = (it->stack + stackp)->position;
+ }
else
INC_TEXT_POS (pos, it->multibyte_p);
- if (CHARPOS (pos) >= ZV)
+ if (text_from_string)
+ {
+ Lisp_Object base_string = it->stack[it->sp - 1].string;
+
+ if (CHARPOS (pos) >= SCHARS (base_string) - 1)
+ it->end_of_box_run_p = true;
+ else
+ {
+ next_face_id
+ = face_at_string_position (it->w, base_string,
+ CHARPOS (pos), 0,
+ &ignore, face_id, false);
+ it->end_of_box_run_p
+ = (FACE_FROM_ID (it->f, next_face_id)->box
+ == FACE_NO_BOX);
+ }
+ }
+ else if (CHARPOS (pos) >= ZV)
it->end_of_box_run_p = true;
else
{
- next_face_id = face_at_buffer_position
- (it->w, CHARPOS (pos), &ignore,
- CHARPOS (pos) + TEXT_PROP_DISTANCE_LIMIT, false, -1);
+ next_face_id =
+ face_at_buffer_position (it->w, CHARPOS (pos), &ignore,
+ CHARPOS (pos)
+ + TEXT_PROP_DISTANCE_LIMIT,
+ false, -1);
it->end_of_box_run_p
= (FACE_FROM_ID (it->f, next_face_id)->box
== FACE_NO_BOX);
The optional argument FROM, if non-nil, specifies the first text
position and defaults to the minimum accessible position of the buffer.
-If FROM is t, use the minimum accessible position that is not a newline
-character. TO, if non-nil, specifies the last text position and
+If FROM is t, use the minimum accessible position that starts a
+non-empty line. TO, if non-nil, specifies the last text position and
defaults to the maximum accessible position of the buffer. If TO is t,
-use the maximum accessible position that is not a newline character.
+use the maximum accessible position that ends a non-empty line.
The optional argument X-LIMIT, if non-nil, specifies the maximum text
width that can be returned. X-LIMIT nil or omitted, means to use the
-pixel-width of WINDOW's body; use this if you do not intend to change
-the width of WINDOW. Use the maximum width WINDOW may assume if you
-intend to change WINDOW's width. In any case, text whose x-coordinate
-is beyond X-LIMIT is ignored. Since calculating the width of long lines
-can take some time, it's always a good idea to make this argument as
-small as possible; in particular, if the buffer contains long lines that
-shall be truncated anyway.
+pixel-width of WINDOW's body; use this if you want to know how high
+WINDOW should be become in order to fit all of its buffer's text with
+the width of WINDOW unaltered. Use the maximum width WINDOW may assume
+if you intend to change WINDOW's width. In any case, text whose
+x-coordinate is beyond X-LIMIT is ignored. Since calculating the width
+of long lines can take some time, it's always a good idea to make this
+argument as small as possible; in particular, if the buffer contains
+long lines that shall be truncated anyway.
The optional argument Y-LIMIT, if non-nil, specifies the maximum text
-height that can be returned. Text lines whose y-coordinate is beyond
-Y-LIMIT are ignored. Since calculating the text height of a large
-buffer can take some time, it makes sense to specify this argument if
-the size of the buffer is unknown.
+height (exluding the height of the mode- or header-line, if any) that
+can be returned. Text lines whose y-coordinate is beyond Y-LIMIT are
+ignored. Since calculating the text height of a large buffer can take
+some time, it makes sense to specify this argument if the size of the
+buffer is large or unknown.
Optional argument MODE-AND-HEADER-LINE nil or omitted means do not
include the height of the mode- or header-line of WINDOW in the return
ptrdiff_t start, end, pos;
struct text_pos startp;
void *itdata = NULL;
- int c, max_y = -1, x = 0, y = 0;
+ int c, max_x = 0, max_y = 0, x = 0, y = 0;
CHECK_BUFFER (buffer);
b = XBUFFER (buffer);
end = max (start, min (XINT (to), ZV));
}
- if (!NILP (y_limit))
- {
- CHECK_NUMBER (y_limit);
- max_y = min (XINT (y_limit), INT_MAX);
- }
+ if (!NILP (x_limit) && RANGED_INTEGERP (0, x_limit, INT_MAX))
+ max_x = XINT (x_limit);
+
+ if (NILP (y_limit))
+ max_y = INT_MAX;
+ else if (RANGED_INTEGERP (0, y_limit, INT_MAX))
+ max_y = XINT (y_limit);
itdata = bidi_shelve_cache ();
SET_TEXT_POS (startp, start, CHAR_TO_BYTE (start));
x = move_it_to (&it, end, -1, max_y, -1, MOVE_TO_POS | MOVE_TO_Y);
else
{
- CHECK_NUMBER (x_limit);
- it.last_visible_x = min (XINT (x_limit), INFINITY);
+ it.last_visible_x = max_x;
/* Actually, we never want move_it_to stop at to_x. But to make
sure that move_it_in_display_line_to always moves far enough,
- we set it to INT_MAX and specify MOVE_TO_X. */
- x = move_it_to (&it, end, INT_MAX, max_y, -1,
- MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
+ we set it to INT_MAX and specify MOVE_TO_X. Also bound width
+ value by X-LIMIT. */
+ x = min (move_it_to (&it, end, INT_MAX, max_y, -1,
+ MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y),
+ max_x);
}
- y = it.current_y + it.max_ascent + it.max_descent;
+ /* Subtract height of header-line which was counted automatically by
+ start_display. */
+ y = min (it.current_y + it.max_ascent + it.max_descent
+ - WINDOW_HEADER_LINE_HEIGHT (w),
+ max_y);
- if (!EQ (mode_and_header_line, Qheader_line)
- && !EQ (mode_and_header_line, Qt))
- /* Do not count the header-line which was counted automatically by
- start_display. */
- y = y - WINDOW_HEADER_LINE_HEIGHT (w);
+ if (EQ (mode_and_header_line, Qheader_line)
+ || EQ (mode_and_header_line, Qt))
+ /* Re-add height of header-line as requested. */
+ y = y + WINDOW_HEADER_LINE_HEIGHT (w);
if (EQ (mode_and_header_line, Qmode_line)
|| EQ (mode_and_header_line, Qt))
- /* Do count the mode-line which is not included automatically by
- start_display. */
+ /* Add height of mode-line as requested. */
y = y + WINDOW_MODE_LINE_HEIGHT (w);
bidi_unshelve_cache (itdata, false);
suitable buffer from echo_buffer[] and clear it.
If WHICH < 0, set echo_area_buffer[1] to echo_area_buffer[0], so
- that the current message becomes the last displayed one, make
- choose a suitable buffer for echo_area_buffer[0], and clear it.
+ that the current message becomes the last displayed one, choose a
+ suitable buffer for echo_area_buffer[0], and clear it.
Value is what FN returns. */
echo_area_buffer[this_one] = Qnil;
}
- /* Choose a suitable buffer from echo_buffer[] is we don't
+ /* Choose a suitable buffer from echo_buffer[] if we don't
have one. */
if (NILP (echo_area_buffer[this_one]))
{
if (frame_garbaged)
{
Lisp_Object tail, frame;
+ struct frame *sf = SELECTED_FRAME ();
FOR_EACH_FRAME (tail, frame)
{
if (FRAME_VISIBLE_P (f) && FRAME_GARBAGED_P (f))
{
- if (f->resized_p)
+ if (f->resized_p
+ /* It makes no sense to redraw a non-selected TTY
+ frame, since that will actually clear the
+ selected frame, and might leave the selected
+ frame with corrupted display, if it happens not
+ to be marked garbaged. */
+ && !(f != sf && (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))))
redraw_frame (f);
else
clear_current_matrices (f);
&& !XBUFFER (w->contents)->text->redisplay)
continue;
- /* If a window on this frame changed size, report that to
- the user and clear the size-change flag. */
- if (FRAME_WINDOW_SIZES_CHANGED (f))
- {
- Lisp_Object functions;
-
- /* Clear flag first in case we get an error below. */
- FRAME_WINDOW_SIZES_CHANGED (f) = false;
- functions = Vwindow_size_change_functions;
-
- while (CONSP (functions))
- {
- if (!EQ (XCAR (functions), Qt))
- call1 (XCAR (functions), frame);
- functions = XCDR (functions);
- }
- }
-
+ run_window_size_change_functions (frame);
menu_bar_hooks_run = update_menu_bar (f, false, menu_bar_hooks_run);
#ifdef HAVE_WINDOW_SYSTEM
update_tool_bar (f, false);
beginning of a paragraph, before the first strong directional
character, can change the base direction of the paragraph (unless
the buffer specifies a fixed paragraph direction), which will
- require to redisplay the whole paragraph. It might be worthwhile
+ require redisplaying the whole paragraph. It might be worthwhile
to find the paragraph limits and widen the range of redisplayed
lines to that, but for now just give up this optimization. */
if (!NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering))
specbind (Qinhibit_free_realized_faces, Qnil);
/* Record this function, so it appears on the profiler's backtraces. */
- record_in_backtrace (Qredisplay_internal, 0, 0);
+ record_in_backtrace (Qredisplay_internal_xC_functionx, 0, 0);
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->already_hscrolled_p = false;
it's too late for the hooks in window-size-change-functions,
which have been examined already in prepare_menu_bars. So in
that case we call the hooks here only for the selected frame. */
- if (sf->redisplay && FRAME_WINDOW_SIZES_CHANGED (sf))
+ if (sf->redisplay)
{
- Lisp_Object functions;
ptrdiff_t count1 = SPECPDL_INDEX ();
record_unwind_save_match_data ();
-
- /* Clear flag first in case we get an error below. */
- FRAME_WINDOW_SIZES_CHANGED (sf) = false;
- functions = Vwindow_size_change_functions;
-
- while (CONSP (functions))
- {
- if (!EQ (XCAR (functions), Qt))
- call1 (XCAR (functions), selected_frame);
- functions = XCDR (functions);
- }
-
+ run_window_size_change_functions (selected_frame);
unbind_to (count1, Qnil);
}
{
if (sf->redisplay)
{
- Lisp_Object functions;
ptrdiff_t count1 = SPECPDL_INDEX ();
record_unwind_save_match_data ();
-
- /* Clear flag first in case we get an error below. */
- FRAME_WINDOW_SIZES_CHANGED (sf) = false;
- functions = Vwindow_size_change_functions;
-
- while (CONSP (functions))
- {
- if (!EQ (XCAR (functions), Qt))
- call1 (XCAR (functions), selected_frame);
- functions = XCDR (functions);
- }
-
+ run_window_size_change_functions (selected_frame);
unbind_to (count1, Qnil);
}
eassert (this_line_vpos == it.vpos);
eassert (this_line_y == it.current_y);
set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
+ if (cursor_row_fully_visible_p (w, false, true))
+ {
#ifdef GLYPH_DEBUG
- *w->desired_matrix->method = 0;
- debug_method_add (w, "optimization 3");
+ *w->desired_matrix->method = 0;
+ debug_method_add (w, "optimization 3");
#endif
- goto update;
+ goto update;
+ }
+ else
+ goto cancel;
}
else
goto cancel;
}
else if (FRAME_VISIBLE_P (sf) && !FRAME_OBSCURED_P (sf))
{
- Lisp_Object mini_window = FRAME_MINIBUF_WINDOW (sf);
- struct frame *mini_frame;
-
displayed_buffer = XBUFFER (XWINDOW (selected_window)->contents);
/* Use list_of_error, not Qerror, so that
we catch only errors and don't run the debugger. */
list_of_error,
redisplay_window_error);
if (update_miniwindow_p)
- internal_condition_case_1 (redisplay_window_1, mini_window,
- list_of_error,
+ internal_condition_case_1 (redisplay_window_1,
+ FRAME_MINIBUF_WINDOW (sf), list_of_error,
redisplay_window_error);
/* Compare desired and current matrices, perform output. */
have put text on a frame other than the selected one, so the
above call to update_frame would not have caught it. Catch
it here. */
- mini_window = FRAME_MINIBUF_WINDOW (sf);
- mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window)));
+ Lisp_Object mini_window = FRAME_MINIBUF_WINDOW (sf);
+ struct frame *mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window)));
if (mini_frame != sf && FRAME_WINDOW_P (mini_frame))
{
bool last_line_misfit = false;
ptrdiff_t beg_unchanged, end_unchanged;
int frame_line_height;
+ bool use_desired_matrix;
SET_TEXT_POS (lpoint, PT, PT_BYTE);
opoint = lpoint;
startp = run_window_scroll_functions (window, it.current.pos);
/* Redisplay the window. */
- bool use_desired_matrix = false;
+ use_desired_matrix = false;
if (!current_matrix_up_to_date_p
|| windows_or_buffers_changed
|| f->cursor_type_changed
if (scroll_conservatively > SCROLL_LIMIT)
{
int window_total_lines
- = WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) * frame_line_height;
+ = WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
int margin =
scroll_margin > 0
? min (scroll_margin, window_total_lines / 4)
beginning of a paragraph, before the first strong directional
character, can change the base direction of the paragraph (unless
the buffer specifies a fixed paragraph direction), which will
- require to redisplay the whole paragraph. It might be worthwhile
+ require redisplaying the whole paragraph. It might be worthwhile
to find the paragraph limits and widen the range of redisplayed
lines to that, but for now just give up this optimization and
redisplay from scratch. */
}
else if (glyph->type == XWIDGET_GLYPH)
{
+#ifndef HAVE_XWIDGETS
+ eassume (false);
+#else
fprintf (stderr,
-#ifdef HAVE_XWIDGETS
" %5d %4c %6d %c %3d 0x%05x %c %4d %1.1d%1.1d\n",
-#else
- " %5d %4c %6d %c %3d %c %4d %1.1d%1.1d\n",
-#endif
glyph - row->glyphs[TEXT_AREA],
'X',
glyph->charpos,
? 'S'
: '-')),
glyph->pixel_width,
-#ifdef HAVE_XWIDGETS
glyph->u.xwidget,
-#endif
'.',
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
-
+#endif
}
}
|| NILP (BVAR (buf, enable_multibyte_characters))
/* When we are loading loadup.el, the character property tables
needed for bidi iteration are not yet available. */
- || !NILP (Vpurify_flag))
+ || redisplay__inhibit_bidi)
return Qleft_to_right;
else if (!NILP (BVAR (buf, bidi_paragraph_direction)))
return BVAR (buf, bidi_paragraph_direction);
/* When we are loading loadup.el, the character property
tables needed for bidi iteration are not yet
available. */
- || !NILP (Vpurify_flag))
+ || redisplay__inhibit_bidi)
return Qnil;
validate_subarray (object, from, to, SCHARS (object), &from_pos, &to_pos);
/* When we are loading loadup.el, the character property
tables needed for bidi iteration are not yet
available. */
- || !NILP (Vpurify_flag))
+ || redisplay__inhibit_bidi)
return Qnil;
set_buffer_temp (buf);
/* Non-nil means don't actually do any redisplay. */
DEFSYM (Qinhibit_redisplay, "inhibit-redisplay");
- DEFSYM (Qredisplay_internal, "redisplay_internal (C function)");
+ DEFSYM (Qredisplay_internal_xC_functionx, "redisplay_internal (C function)");
DEFVAR_BOOL("inhibit-message", inhibit_message,
doc: /* Non-nil means calls to `message' are not displayed.
Vtruncate_partial_width_windows,
doc: /* Non-nil means truncate lines in windows narrower than the frame.
For an integer value, truncate lines in each window narrower than the
-full frame width, provided the window width is less than that integer;
-otherwise, respect the value of `truncate-lines'.
+full frame width, provided the total window width in column units is less
+than that integer; otherwise, respect the value of `truncate-lines'.
+The total width of the window is as returned by `window-total-width', it
+includes the fringes, the continuation and truncation glyphs, the
+display margins (if any), and the scroll bar
For any other non-nil value, truncate lines in all windows that do
not span the full frame width.
DEFVAR_LISP ("frame-title-format", Vframe_title_format,
doc: /* Template for displaying the title bar of visible frames.
-(Assuming the window manager supports this feature.)
+\(Assuming the window manager supports this feature.)
This variable has the same structure as `mode-line-format', except that
the %c and %l constructs are ignored. It is used only on frames for
DEFVAR_LISP ("icon-title-format", Vicon_title_format,
doc: /* Template for displaying the title bar of an iconified frame.
-(Assuming the window manager supports this feature.)
+\(Assuming the window manager supports this feature.)
This variable has the same structure as `mode-line-format' (which see),
and is used only on frames for which no explicit name has been set
-(see `modify-frame-parameters'). */);
+\(see `modify-frame-parameters'). */);
Vicon_title_format
= Vframe_title_format
= listn (CONSTYPE_PURE, 3,
the buffer when it becomes large. */);
Vmessage_log_max = make_number (1000);
- DEFVAR_LISP ("window-size-change-functions", Vwindow_size_change_functions,
- doc: /* Functions called during redisplay, if window sizes have changed.
-The value should be a list of functions that take one argument.
-During the first part of redisplay, for each frame, if any of its windows
-have changed size since the last redisplay, or have been split or deleted,
-all the functions in the list are called, with the frame as argument.
-If redisplay decides to resize the minibuffer window, it calls these
-functions on behalf of that as well. */);
- Vwindow_size_change_functions = Qnil;
-
DEFVAR_LISP ("window-scroll-functions", Vwindow_scroll_functions,
doc: /* List of functions to call before redisplaying a window with scrolling.
Each function is called with two arguments, the window and its new
A value of `grow-only', the default, means let mini-windows grow only;
they return to their normal size when the minibuffer is closed, or the
echo area becomes empty. */);
- Vresize_mini_windows = Qgrow_only;
+ /* Contrary to the doc string, we initialize this to nil, so that
+ loading loadup.el won't try to resize windows before loading
+ window.el, where some functions we need to call for this live.
+ We assign the 'grow-only' value right after loading window.el
+ during loadup. */
+ Vresize_mini_windows = Qnil;
DEFVAR_LISP ("blink-cursor-alist", Vblink_cursor_alist,
doc: /* Alist specifying how to blink the cursor off.
DEFVAR_LISP ("redisplay--variables", Vredisplay__variables,
doc: /* A hash-table of variables changing which triggers a thorough redisplay. */);
Vredisplay__variables = Qnil;
+
+ DEFVAR_BOOL ("redisplay--inhibit-bidi", redisplay__inhibit_bidi,
+ doc: /* Non-nil means it is not safe to attempt bidi reordering for display. */);
+ /* Initialize to t, since we need to disable reordering until
+ loadup.el successfully loads charprop.el. */
+ redisplay__inhibit_bidi = true;
}