diff options
| author | Nicholas Marriott <nicm@openbsd.org> | 2013-03-22 10:36:53 +0000 |
|---|---|---|
| committer | Nicholas Marriott <nicm@openbsd.org> | 2013-03-22 10:36:53 +0000 |
| commit | ad5df9bc2f00b3de89e1c2bd6714022cf99aacda (patch) | |
| tree | 40cc728e0c6970d41bd5ba7731e66c4f6fc2bd38 /screen-write.c | |
| parent | 22a2949bd23eaee1ceddc4b92da3c9fcf6c3864b (diff) | |
Implement DECAWM (SM/RM 7) using existing MODE_WRAP flag.
Diffstat (limited to 'screen-write.c')
| -rw-r--r-- | screen-write.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/screen-write.c b/screen-write.c index bee6f6d7..34dce95e 100644 --- a/screen-write.c +++ b/screen-write.c @@ -979,10 +979,10 @@ screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc) struct screen *s = ctx->s; struct grid *gd = s->grid; struct tty_ctx ttyctx; - u_int width, xx; + u_int width, xx, last; struct grid_cell tmp_gc, *tmp_gcp; struct utf8_data ud; - int insert = 0; + int insert; /* Ignore 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; grid_move_cells(s->grid, s->cx + width, s->cx, s->cy, xx); insert = 1; - } + } else + insert = 0; /* Check this will fit on the current line and wrap if not. */ 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 */ } - /* Sanity checks. */ - if (((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width) - || s->cy > screen_size_y(s) - 1) + /* Sanity check cursor position. */ + if (s->cx > screen_size_x(s) - width || s->cy > screen_size_y(s) - 1) return; /* 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. */ grid_view_set_cell(gd, s->cx, s->cy, gc); - /* Move the cursor. */ - s->cx += width; + /* + * 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; + else + s->cx = screen_size_x(s) - last; /* Draw to the screen if necessary. */ if (insert) { |