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render: track last cursor position in absolute values

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This seems to fix an issue where we sometimes saw "ghost" cursors when
scrolling.
This commit is contained in:
Daniel Eklöf 2019-07-02 22:31:52 +02:00
parent 8ed7239458
commit d5158b2432
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GPG key ID: 5BBD4992C116573F
1 changed files with 6 additions and 7 deletions
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13
main.c
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@ -386,11 +386,11 @@ grid_render_scroll_reverse(struct context *c, struct buffer *buf,
static void
grid_render(struct context *c)
{
static struct cursor last_cursor = {.linear = 0, .col = 0, .row = 0};
static int last_cursor;
if (tll_length(c->term.grid->damage) == 0 &&
tll_length(c->term.grid->scroll_damage) == 0 &&
last_cursor.linear == c->term.cursor.linear)
last_cursor == c->term.cursor.linear)
{
return;
}
@ -444,12 +444,11 @@ grid_render(struct context *c)
/* TODO: break out to function */
/* Re-render last cursor cell and current cursor cell */
if (last_cursor.linear != c->term.cursor.linear) {
/* Make sure previous cursor is refreshed (to avoid "ghost" cursors) */
if (last_cursor != c->term.cursor.linear) {
struct damage prev_cursor = {
.type = DAMAGE_UPDATE,
.range = {.start = c->term.grid->offset + last_cursor.linear,
.length = 1},
.range = {.start = last_cursor, .length = 1},
};
grid_render_update(c, buf, &prev_cursor);
}
@ -459,7 +458,7 @@ grid_render(struct context *c)
.range = {.start = c->term.grid->offset + c->term.cursor.linear, .length = 1},
};
grid_render_update(c, buf, &cursor);
last_cursor = c->term.cursor;
last_cursor = c->term.grid->offset + c->term.cursor.linear;
c->term.grid->offset %= c->term.grid->size;