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Dl/Il should follow scrolling region.

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This commit is contained in:
Nicholas Marriott
2007-09-29 18:48:04 +00:00
parent 3d6c324405
commit 32f177038f
2 changed files with 82 additions and 11 deletions
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72
screen.c
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@ -1,4 +1,4 @@
/* $Id: screen.c,v 1.14 2007-09-29 18:07:18 nicm Exp $ */
/* $Id: screen.c,v 1.15 2007-09-29 18:48:04 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -173,7 +173,7 @@ screen_draw(struct screen *s, struct buffer *b, u_int uy, u_int ly)
attr = 0;
colr = SCREEN_DEFCOLR;
input_store_two(b, CODE_SCROLLREGION, 1, s->sy);
input_store_two(b, CODE_SCROLLREGION, s->ry_upper + 1, s->ry_lower + 1);
input_store_zero(b, CODE_CURSOROFF);
@ -566,6 +566,40 @@ screen_insert_lines(struct screen *s, u_int py, u_int ny)
s, py, ny, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Insert lines in region. */
void
screen_insert_lines_region(struct screen *s, u_int py, u_int ny)
{
if (py < s->ry_upper || py > s->ry_lower)
return;
if (py + ny > s->ry_lower)
ny = s->ry_lower - py;
log_debug("inserting lines in region: %u,%u (%u,%u)", py, ny,
s->ry_upper, s->ry_lower);
/*
* Insert range of ny lines at py:
* - Free ny lines from end of screen.
* - Move from py to end of screen - ny to py + ny.
* - Create ny lines at py.
*
* Example: insert 2 lines at 4.
* ryu = 11, ryl = 16, py = 13, ny = 2
* screen_free_lines(s, 15, 2); - delete lines 15,16
* screen_move_lines(s, 13, 15, 2);- move 13,14 to 15,16
* screen_make_lines(s, 13, 2); - make lines 13,14
*/
screen_free_lines(s, (s->ry_upper + 1) - ny, ny);
if (py != s->ry_upper)
screen_move_lines(s, py + ny, py, (s->ry_upper + 1) - py - ny);
screen_make_lines(s, py, ny);
screen_fill_lines(
s, py, ny, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Delete lines. */
void
screen_delete_lines(struct screen *s, u_int py, u_int ny)
@ -600,6 +634,40 @@ screen_delete_lines(struct screen *s, u_int py, u_int ny)
s, s->sy - ny, ny, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Delete lines inside scroll region. */
void
screen_delete_lines_region(struct screen *s, u_int py, u_int ny)
{
if (py < s->ry_upper || py > s->ry_lower)
return;
if (py + ny > s->ry_lower)
ny = s->ry_lower - py;
log_debug("deleting lines in region: %u,%u (%u,%u)", py, ny,
s->ry_upper, s->ry_lower);
/*
* Delete range of ny lines at py:
* - Free ny lines at py.
* - Move from py + ny to end of region to py.
* - Free and recreate last ny lines.
*
* Example: delete lines 13,14.
* ryu = 11, ryl = 16, py = 13, ny = 2
* screen_free_lines(s, 13, 2); - delete lines 13,14
* screen_move_lines(s, 15, 16, 2);- move 15,16 to 13
* screen_make_lines(s, 15, 16); - make lines 15,16
*/
screen_free_lines(s, py, ny);
if (py != s->ry_lower)
screen_move_lines(s, py, py + ny, (s->ry_lower + 1) - py - ny);
screen_make_lines(s, (s->ry_lower + 1) - ny, ny);
screen_fill_lines(s, (s->ry_lower + 1) - ny,
ny, SCREEN_DEFDATA, SCREEN_DEFATTR, SCREEN_DEFCOLR);
}
/* Insert characters. */
void
screen_insert_characters(struct screen *s, u_int px, u_int py, u_int nx)