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scrolling region: wip

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Daniel Eklöf 2019-06-23 21:12:32 +02:00
parent 7cc9be01f4
commit 2fe7145aff
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GPG key ID: 5BBD4992C116573F
6 changed files with 199 additions and 77 deletions
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70
csi.c
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@ -251,24 +251,32 @@ csi_dispatch(struct terminal *term, uint8_t final)
case 'A': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
if (count == 0)
count = 1;
grid_cursor_up(&term->grid, count);
break;
}
case 'B': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
if (count == 0)
count = 1;
grid_cursor_down(&term->grid, count);
break;
}
case 'C': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
if (count == 0)
count = 1;
grid_cursor_right(&term->grid, count);
break;
}
case 'D': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
if (count == 0)
count = 1;
grid_cursor_left(&term->grid, count);
break;
}
@ -278,6 +286,11 @@ csi_dispatch(struct terminal *term, uint8_t final)
int row = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
int col = term->vt.params.idx > 1 ? term->vt.params.v[1].value : 1;
if (row == 0)
row = 1;
if (col == 0)
col = 1;
grid_cursor_to(&term->grid, row - 1, col - 1);
break;
}
@ -285,10 +298,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
case 'J': {
/* Erase screen */
int param = 0;
if (term->vt.params.idx > 0)
param = term->vt.params.v[0].value;
int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 0;
int start = -1;
int end = -1;
switch (param) {
@ -357,9 +367,48 @@ csi_dispatch(struct terminal *term, uint8_t final)
break;
}
case 'L': {
if (term->grid.cursor.row < term->grid.scrolling_region.start ||
term->grid.cursor.row >= term->grid.scrolling_region.end)
break;
int count = min(
term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1,
term->grid.scrolling_region.end - term->grid.cursor.row);
LOG_DBG("reverse partial: %d, %d rows",
term->grid.cursor.row - term->grid.scrolling_region.start,
count);
grid_scroll_reverse_partial(
&term->grid,
term->grid.cursor.row - term->grid.scrolling_region.start,
count);
grid_cursor_to(&term->grid, term->grid.cursor.row, 0);
break;
}
case 'M': {
if (term->grid.cursor.row < term->grid.scrolling_region.start ||
term->grid.cursor.row >= term->grid.scrolling_region.end)
break;
int count = min(
term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1,
term->grid.scrolling_region.end - term->grid.cursor.row);
grid_scroll_partial(
&term->grid,
term->grid.cursor.row - term->grid.scrolling_region.start,
count);
break;
}
case 'P': {
/* DCH: Delete character */
int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
if (param == 0)
param = 1;
/* Only delete up to the right margin */
const int max_end = grid_cursor_linear(
@ -385,10 +434,19 @@ csi_dispatch(struct terminal *term, uint8_t final)
int end = term->vt.params.idx > 1
? term->vt.params.v[1].value : term->grid.rows;
if (start == 0)
start = 1;
if (end == 0)
end = term->grid.rows;
/* 1-based */
term->grid.scrolling_region.start = start - 1;
term->grid.scrolling_region.end = end - 1;
LOG_INFO("scrolling region: %d-%d",
term->grid.scrolling_region.start,
term->grid.scrolling_region.end);
tll_free(term->grid.damage);
grid_damage_update(&term->grid, 0, term->grid.rows * term->grid.cols);
grid_cursor_to(&term->grid, 0, 0);
@ -521,6 +579,10 @@ csi_dispatch(struct terminal *term, uint8_t final)
term->grid.linear_cursor = grid_cursor_linear(
&term->grid, term->grid.cursor.row, term->grid.cursor.col);
/* Should these be restored from saved values? */
term->grid.scrolling_region.start = 0;
term->grid.scrolling_region.end = term->grid.rows;
tll_free(term->grid.damage);
grid_damage_update(
&term->grid, 0, term->grid.cols * term->grid.rows);