mirrors/foot
1
0
Fork 0
mirror of https://codeberg.org/dnkl/foot.git synced 2026-03-10 05:33:51 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

scroll: let the render erase the scrolled up region

Browse source 
The grid scroll operation no longer inserts a DAMAGE_ERASE operation,
but instead manually clears the region. The render does the
corresponding thing.
This commit is contained in:
Daniel Eklöf 2019-06-26 19:33:39 +02:00
parent a35738d96f
commit 97420f13d8
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
2 changed files with 51 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

44
grid.c
View file

@ -164,26 +164,22 @@ grid_damage_scroll(struct grid *grid, enum damage_type damage_type,
{
damage_adjust_after_scroll(grid, damage_type, region, lines);
if (tll_length(grid->scroll_damage) > 0 &&
tll_back(grid->scroll_damage).type == damage_type &&
tll_back(grid->scroll_damage).scroll.region.start == region.start &&
tll_back(grid->scroll_damage).scroll.region.end == region.end)
{
/* Merge with existing scroll damage */
if (tll_length(grid->scroll_damage) > 0) {
struct damage *dmg = &tll_back(grid->scroll_damage);
dmg->scroll.lines += lines;
/* If we've scrolled away the entire screen, remove it all together */
if (dmg->scroll.lines >= region.end - region.start)
tll_pop_back(grid->scroll_damage);
} else {
struct damage dmg = {
.type = damage_type,
.scroll = {.region = region, .lines = lines},
};
tll_push_back(grid->scroll_damage, dmg);
if (dmg->type == damage_type &&
dmg->scroll.region.start == region.start &&
dmg->scroll.region.end == region.end)
{
dmg->scroll.lines += lines;
return;
}
}
struct damage dmg = {
.type = damage_type,
.scroll = {.region = region, .lines = lines},
};
tll_push_back(grid->scroll_damage, dmg);
}
void
@ -277,11 +273,10 @@ grid_scroll_partial(struct grid *grid, struct scroll_region region, int rows)
&grid->cells[cell_dst], &grid->cells[cell_src],
bytes);
memset(&grid->cells[(region.end - rows) * grid->cols], 0,
rows * grid->cols * sizeof(grid->cells[0]));
grid_damage_scroll(grid, DAMAGE_SCROLL, region, rows);
grid_erase(
grid,
(region.end - rows) * grid->cols,
region.end * grid->cols);
}
void
@ -311,11 +306,10 @@ grid_scroll_reverse_partial(struct grid *grid,
&grid->cells[cell_dst], &grid->cells[cell_src],
bytes);
memset(&grid->cells[cell_src], 0,
rows * grid->cols * sizeof(grid->cells[0]));
grid_damage_scroll(grid, DAMAGE_SCROLL_REVERSE, region, rows);
grid_erase(
grid,
region.start * grid->cols,
(region.start + rows) * grid->cols);
}
void