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scrolling: initial reverse scrolling support - no scroll regions

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Daniel Eklöf 2019-07-03 10:45:49 +02:00
parent 048f619b19
commit a7a28ff581
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GPG key ID: 5BBD4992C116573F
4 changed files with 47 additions and 51 deletions
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50
terminal.c
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@ -134,8 +134,7 @@ term_damage_scroll(struct terminal *term, enum damage_type damage_type,
} else
break;
}
} else
assert(false);
}
if (tll_length(term->grid->scroll_damage) > 0) {
struct damage *dmg = &tll_back(term->grid->scroll_damage);
@ -187,11 +186,11 @@ term_cursor_to(struct terminal *term, int row, int col)
term->cursor.col = col;
term->cursor.row = row;
size_t len = term->cols;
int len = term->cols;
term->grid->cur_line = grid_get_range(
term->grid, term->cursor.linear - col, &len);
assert(len == (size_t)term->cols);
assert(len == term->cols);
}
void
@ -277,11 +276,11 @@ term_scroll_partial(struct terminal *term, struct scroll_region region, int rows
term_damage_scroll(term, DAMAGE_SCROLL, region, rows);
size_t len = term->cols;
int len = term->cols;
term->grid->cur_line = grid_get_range(
term->grid, term->cursor.linear - term->cursor.col, &len);
assert(len == (size_t)term->cols);
assert(len == term->cols);
}
void
@ -294,37 +293,20 @@ void
term_scroll_reverse_partial(struct terminal *term,
struct scroll_region region, int rows)
{
if (rows >= region.end - region.start) {
assert(false && "todo");
return;
}
#if 0
int cell_dst = (region.start + rows) * term->cols;
int cell_src = (region.start + 0) * term->cols;
int cell_count = (region.end - region.start - rows) * term->cols;
LOG_DBG("moving %d lines from row %d to row %d", cell_count / term->cols,
cell_src / term->cols, cell_dst / term->cols);
const int bytes = cell_count * sizeof(term->grid->cells[0]);
memmove(
&term->grid->cells[cell_dst], &term->grid->cells[cell_src],
bytes);
memset(&term->grid->cells[cell_src], 0,
rows * term->cols * sizeof(term->grid->cells[0]));
term_damage_scroll(term, DAMAGE_SCROLL_REVERSE, region, rows);
#else
/* TODO */
assert(false);
assert(region.start == 0 && region.end == 0);
assert(rows < term->rows);
assert(region.start == 0);
assert(region.end == term->rows);
term->grid->offset -= rows * term->cols;
grid_memset(term->grid, region.start * term->cols, 0, rows * term->cols);
term_damage_scroll(term, DAMAGE_SCROLL_REVERSE, region, rows);
#endif
int len = term->cols;
term->grid->cur_line = grid_get_range(
term->grid, term->cursor.linear - term->cursor.col, &len);
assert(len == term->cols);
}
void