/* Calculate what line insertion or deletion to do, and do it,
Copyright (C) 1985, 1986, 1990, 1993, 1994, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+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 2, 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <stdio.h>
#include <string.h>
-#include "termchar.h"
+#include <setjmp.h>
#include "lisp.h"
+#include "termchar.h"
#include "dispextern.h"
#include "keyboard.h"
#include "frame.h"
#include "window.h"
+#include "termhooks.h"
/* All costs measured in characters.
So no cost can exceed the area of a frame, measured in characters.
unsigned char writecount;
};
-static void do_direct_scrolling P_ ((struct glyph_matrix *,
- struct matrix_elt *,
- int, int));
-static void do_scrolling P_ ((struct glyph_matrix *,
- struct matrix_elt *,
- int, int));
+static void do_direct_scrolling (struct frame *,
+ struct glyph_matrix *,
+ struct matrix_elt *,
+ int, int);
+static void do_scrolling (struct frame *,
+ struct glyph_matrix *,
+ struct matrix_elt *,
+ int, int);
\f
/* Determine, in matrix[i,j], the cost of updating the first j old
new contents appears. */
static void
-calculate_scrolling (frame, matrix, window_size, lines_below,
- draw_cost, old_hash, new_hash,
- free_at_end)
- FRAME_PTR frame;
- /* matrix is of size window_size + 1 on each side. */
- struct matrix_elt *matrix;
- int window_size, lines_below;
- int *draw_cost;
- int *old_hash;
- int *new_hash;
- int free_at_end;
+calculate_scrolling (FRAME_PTR frame,
+ /* matrix is of size window_size + 1 on each side. */
+ struct matrix_elt *matrix,
+ int window_size, int lines_below,
+ int *draw_cost, int *old_hash, int *new_hash,
+ int free_at_end)
{
register int i, j;
int frame_lines = FRAME_LINES (frame);
register struct matrix_elt *p, *p1;
register int cost, cost1;
- int lines_moved = window_size + (scroll_region_ok ? 0 : lines_below);
+ int lines_moved = window_size
+ + (FRAME_SCROLL_REGION_OK (frame) ? 0 : lines_below);
/* first_insert_cost[I] is the cost of doing the first insert-line
at the i'th line of the lines we are considering,
where I is origin 1 (as it is below). */
of lines. */
static void
-do_scrolling (current_matrix, matrix, window_size, unchanged_at_top)
- struct glyph_matrix *current_matrix;
- struct matrix_elt *matrix;
- int window_size;
- int unchanged_at_top;
+do_scrolling (struct frame *frame, struct glyph_matrix *current_matrix, struct matrix_elt *matrix, int window_size, int unchanged_at_top)
{
struct matrix_elt *p;
int i, j, k;
int *copy_from = (int *) alloca (window_size * sizeof (int));
/* Zero means line is empty. */
- bzero (retained_p, window_size * sizeof (char));
+ memset (retained_p, 0, window_size * sizeof (char));
for (k = 0; k < window_size; ++k)
copy_from[k] = -1;
/* Set the terminal window, if not done already. */
if (! terminal_window_p)
{
- set_terminal_window (window_size + unchanged_at_top);
+ set_terminal_window (frame, window_size + unchanged_at_top);
terminal_window_p = 1;
}
/* Delete lines on the terminal. */
- ins_del_lines (j + unchanged_at_top, - p->deletecount);
+ ins_del_lines (frame, j + unchanged_at_top, - p->deletecount);
}
else
{
/* Set the terminal window if not yet done. */
if (!terminal_window_p)
{
- set_terminal_window (window_size + unchanged_at_top);
+ set_terminal_window (frame, window_size + unchanged_at_top);
terminal_window_p = 1;
}
--queue;
/* Do the deletion on the terminal. */
- ins_del_lines (queue->pos, queue->count);
+ ins_del_lines (frame, queue->pos, queue->count);
/* All lines in the range deleted become empty in the glyph
matrix. Assign to them glyph rows that are not retained.
CHECK_MATRIX (current_matrix);
if (terminal_window_p)
- set_terminal_window (0);
+ set_terminal_window (frame, 0);
}
\f
is the equivalent of draw_cost for the old line contents */
static void
-calculate_direct_scrolling (frame, matrix, window_size, lines_below,
- draw_cost, old_draw_cost, old_hash, new_hash,
- free_at_end)
- FRAME_PTR frame;
- /* matrix is of size window_size + 1 on each side. */
- struct matrix_elt *matrix;
- int window_size, lines_below;
- int *draw_cost;
- int *old_draw_cost;
- int *old_hash;
- int *new_hash;
- int free_at_end;
+calculate_direct_scrolling (FRAME_PTR frame,
+ /* matrix is of size window_size + 1 on each side. */
+ struct matrix_elt *matrix,
+ int window_size, int lines_below,
+ int *draw_cost, int *old_draw_cost,
+ int *old_hash, int *new_hash,
+ int free_at_end)
{
register int i, j;
int frame_lines = FRAME_LINES (frame);
/* Overhead of setting the scroll window, plus the extra cost
cost of scrolling by a distance of one. The extra cost is
added once for consistency with the cost vectors */
- scroll_overhead = scroll_region_cost + extra_cost;
+ scroll_overhead
+ = FRAME_SCROLL_REGION_COST (frame) + extra_cost;
/* initialize the top left corner of the matrix */
matrix->writecost = 0;
the cost matrix for this approach is constructed. */
static void
-do_direct_scrolling (current_matrix, cost_matrix, window_size,
- unchanged_at_top)
+do_direct_scrolling (frame, current_matrix, cost_matrix,
+ window_size, unchanged_at_top)
+ struct frame *frame;
struct glyph_matrix *current_matrix;
struct matrix_elt *cost_matrix;
int window_size;
old matrix. Lines not retained are empty. */
char *retained_p = (char *) alloca (window_size * sizeof (char));
- bzero (retained_p, window_size * sizeof (char));
+ memset (retained_p, 0, window_size * sizeof (char));
/* Perform some sanity checks when GLYPH_DEBUG is on. */
CHECK_MATRIX (current_matrix);
if (i > j)
{
/* Immediately insert lines */
- set_terminal_window (i + unchanged_at_top);
+ set_terminal_window (frame, i + unchanged_at_top);
terminal_window_p = 1;
- ins_del_lines (j - n_to_write + unchanged_at_top, i - j);
+ ins_del_lines (frame, j - n_to_write + unchanged_at_top, i - j);
}
else if (i < j)
{
--queue;
if (queue->count)
{
- set_terminal_window (queue->window);
+ set_terminal_window (frame, queue->window);
terminal_window_p = 1;
- ins_del_lines (queue->pos, queue->count);
+ ins_del_lines (frame, queue->pos, queue->count);
}
else
{
copy_from, retained_p);
if (terminal_window_p)
- set_terminal_window (0);
+ set_terminal_window (frame, 0);
}
matrix = ((struct matrix_elt *)
alloca ((window_size + 1) * (window_size + 1) * sizeof *matrix));
- if (scroll_region_ok)
+ if (FRAME_SCROLL_REGION_OK (frame))
{
calculate_direct_scrolling (frame, matrix, window_size,
unchanged_at_bottom,
draw_cost, old_draw_cost,
old_hash, new_hash, free_at_end);
- do_direct_scrolling (frame->current_matrix,
+ do_direct_scrolling (frame, frame->current_matrix,
matrix, window_size, unchanged_at_top);
}
else
calculate_scrolling (frame, matrix, window_size, unchanged_at_bottom,
draw_cost, old_hash, new_hash,
free_at_end);
- do_scrolling (frame->current_matrix, matrix, window_size,
+ do_scrolling (frame,
+ frame->current_matrix, matrix, window_size,
unchanged_at_top);
}
}
such a line will have little weight. */
int
-scrolling_max_lines_saved (start, end, oldhash, newhash, cost)
- int start, end;
- int *oldhash, *newhash, *cost;
+scrolling_max_lines_saved (int start, int end, int *oldhash, int *newhash, int *cost)
{
struct { int hash; int count; } lines[01000];
register int i, h;
avg_length /= end - start;
threshold = avg_length / 4;
- bzero (lines, sizeof lines);
+ memset (lines, 0, sizeof lines);
/* Put new lines' hash codes in hash table. Ignore lines shorter
than the threshold. Thus, if the lines that are in common are
to scroll_frame_lines to perform this scrolling. */
int
-scroll_cost (frame, from, to, amount)
- FRAME_PTR frame;
- int from, to, amount;
+scroll_cost (FRAME_PTR frame, int from, int to, int amount)
{
/* Compute how many lines, at bottom of frame,
will not be involved in actual motion. */
if (amount == 0)
return 0;
- if (! scroll_region_ok)
+ if (! FRAME_SCROLL_REGION_OK (frame))
limit = height;
else if (amount > 0)
limit += amount;
overhead and multiply factor values */
static void
-line_ins_del (frame, ov1, pf1, ovn, pfn, ov, mf)
- FRAME_PTR frame;
- int ov1, ovn;
- int pf1, pfn;
- register int *ov, *mf;
+line_ins_del (FRAME_PTR frame, int ov1, int pf1, int ovn, int pfn, register int *ov, register int *mf)
{
register int i;
register int frame_lines = FRAME_LINES (frame);
}
static void
-ins_del_costs (frame,
- one_line_string, multi_string,
- setup_string, cleanup_string,
- costvec, ncostvec, coefficient)
- FRAME_PTR frame;
- char *one_line_string, *multi_string;
- char *setup_string, *cleanup_string;
- int *costvec, *ncostvec;
- int coefficient;
+ins_del_costs (FRAME_PTR frame,
+ char *one_line_string, char *multi_string,
+ char *setup_string, char *cleanup_string,
+ int *costvec, int *ncostvec,
+ int coefficient)
{
if (multi_string)
line_ins_del (frame,
HCoop / bpt / emacs.git / blobdiff