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Implement DECAWM (SM/RM 7) using existing MODE_WRAP flag.

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This commit is contained in:
Nicholas Marriott
2013-02-18 15:57:46 +00:00
parent ba3b8ccc1d
commit a6c4c2cca0
3 changed files with 21 additions and 9 deletions
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1
TODO
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@@ -171,7 +171,6 @@ TERMINAL ISSUES
- support for bce - support for bce
- use screen-256color when started on 256 colour terminal?? - use screen-256color when started on 256 colour terminal??
- if-shell/run-shell should block further command execution in the same command - if-shell/run-shell should block further command execution in the same command
- wrap/no wrap esc seq DEC CSI ? 7 h/l
* We need a tmux terminfo entry to document the extensions we are using in * We need a tmux terminfo entry to document the extensions we are using in
upstream terminfo. Must NOT change (only add or remove) anything from upstream terminfo. Must NOT change (only add or remove) anything from
TERM=screen so we can fallback! TERM=screen so we can fallback!

6
input.c
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@@ -1248,6 +1248,9 @@ input_csi_dispatch(struct input_ctx *ictx)
screen_write_cursormove(&ictx->ctx, 0, 0); screen_write_cursormove(&ictx->ctx, 0, 0);
screen_write_clearscreen(&ictx->ctx); screen_write_clearscreen(&ictx->ctx);
break; break;
case 7: /* DECAWM */
screen_write_mode_clear(&ictx->ctx, MODE_WRAP);
break;
case 25: /* TCEM */ case 25: /* TCEM */
screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); screen_write_mode_clear(&ictx->ctx, MODE_CURSOR);
break; break;
@@ -1305,6 +1308,9 @@ input_csi_dispatch(struct input_ctx *ictx)
screen_write_cursormove(&ictx->ctx, 0, 0); screen_write_cursormove(&ictx->ctx, 0, 0);
screen_write_clearscreen(&ictx->ctx); screen_write_clearscreen(&ictx->ctx);
break; break;
case 7: /* DECAWM */
screen_write_mode_set(&ictx->ctx, MODE_WRAP);
break;
case 25: /* TCEM */ case 25: /* TCEM */
screen_write_mode_set(&ictx->ctx, MODE_CURSOR); screen_write_mode_set(&ictx->ctx, MODE_CURSOR);
break; break;

21
screen-write.c
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@@ -979,10 +979,10 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
struct screen *s = ctx->s; struct screen *s = ctx->s;
struct grid *gd = s->grid; struct grid *gd = s->grid;
struct tty_ctx ttyctx; struct tty_ctx ttyctx;
u_int width, xx; u_int width, xx, last;
struct grid_cell tmp_gc, *tmp_gcp; struct grid_cell tmp_gc, *tmp_gcp;
struct utf8_data ud; struct utf8_data ud;
int insert = 0; int insert;
/* Ignore padding. */ /* Ignore padding. */
if (gc->flags & GRID_FLAG_PADDING) if (gc->flags & GRID_FLAG_PADDING)
@@ -1020,7 +1020,8 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
xx = screen_size_x(s) - s->cx - width; xx = screen_size_x(s) - s->cx - width;
grid_move_cells(s->grid, s->cx + width, s->cx, s->cy, xx); grid_move_cells(s->grid, s->cx + width, s->cx, s->cy, xx);
insert = 1; insert = 1;
} } else
insert = 0;
/* Check this will fit on the current line and wrap if not. */ /* Check this will fit on the current line and wrap if not. */
if ((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width) { if ((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width) {
@@ -1028,9 +1029,8 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
s->cx = 0; /* carriage return */ s->cx = 0; /* carriage return */
} }
/* Sanity checks. */ /* Sanity check cursor position. */
if (((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width) if (s->cx > screen_size_x(s) - width || s->cy > screen_size_y(s) - 1)
|| s->cy > screen_size_y(s) - 1)
return; return;
/* Handle overwriting of UTF-8 characters. */ /* Handle overwriting of UTF-8 characters. */
@@ -1049,8 +1049,15 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
/* Set the cell. */ /* Set the cell. */
grid_view_set_cell(gd, s->cx, s->cy, gc); grid_view_set_cell(gd, s->cx, s->cy, gc);
/* Move the cursor. */ /*
* Move the cursor. If not wrapping, stick at the last character and
* replace it.
*/
last = !!(s->mode & MODE_WRAP);
if (s->cx <= screen_size_x(s) - last - width)
s->cx += width; s->cx += width;
else
s->cx = screen_size_x(s) - last;
/* Draw to the screen if necessary. */ /* Draw to the screen if necessary. */
if (insert) { if (insert) {