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reflow: horizontally shrink the screen buffer

This commit is contained in:
Boris Faure 2013-03-25 21:34:52 +01:00
parent 74aa62f13c
commit df08549f84
1 changed files with 88 additions and 5 deletions
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93
src/bin/termpty.c
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@ -616,10 +616,7 @@ expand_screen:
ty->circular_offset = 0;
/* TODO:
* change of height (handle later?)
* double-width :)
*/
/* TODO double-width :) */
for (old_y = 0; old_y < old_h; old_y++)
{
@ -954,7 +951,93 @@ shrink_screen:
if (ty->altbuf)
return;
/* TODO */
ty->circular_offset = 0;
/* TODO double-width :) */
x = 0;
y = 0;
if (old_ts)
{
memcpy(ty->screen,
old_cells,
old_ts->w * sizeof(Termcell));
x = old_ts->w;
if (!rewrapping)
y++;
free(old_ts);
old_ts = NULL;
old_cells = NULL;
}
for (old_y = 0; old_y < old_h; old_y++)
{
ssize_t cur_line_length;
int remaining_width,
len;
cur_line_length = termpty_line_length(&OLD_SCREEN(0, old_y), old_w);
old_x = 0;
do
{
Eina_Bool need_new_line = EINA_FALSE;
remaining_width = ty->w - x;
len = MIN(remaining_width, cur_line_length);
memcpy(&TERMPTY_SCREEN(ty, x, y),
&OLD_SCREEN(old_x, old_y),
len * sizeof(Termcell));
x += len;
old_x += len;
cur_line_length -= len;
if (cur_line_length > 0)
{
TERMPTY_SCREEN(ty, x - 1, y).att.autowrapped = 1;
need_new_line = EINA_TRUE;
}
else
{
Termcell *cell = &TERMPTY_SCREEN(ty, x - 1, y);
if (cell->att.autowrapped)
{
if (x >= ty->w)
need_new_line = EINA_TRUE;
else
{
cell->att.autowrapped = 0;
need_new_line = EINA_FALSE;
}
}
else
{
if (old_y < old_h - 1)
need_new_line = EINA_TRUE;
}
}
if (need_new_line)
{
x = 0;
if (y >= ty->h - 1)
{
Termcell *cells;
ty->circular_offset++;
if (ty->circular_offset >= ty->h)
ty->circular_offset = 0;
cells = &TERMPTY_SCREEN(ty, 0, y);
len = termpty_line_length(cells, ty->w);
termpty_text_save_top(ty, cells, len);
ty->state.cy++;
}
else
y++;
}
}
while (cur_line_length > 0);
}
if (ty->state.cy >= ty->h)
ty->state.cy = ty->h - 1;
}
#undef OLD_SCREEN