unsigned int tsm_symbol_get_width(struct tsm_symbol_table *tbl,
tsm_symbol_t sym)
{
const uint32_t *ch;
size_t len;
if (!tbl)
return 0;
ch = tsm_symbol_get(tbl, &sym, &len);
if (len == 0)
return 0;
return tsm_ucs4_get_width(*ch);
}
SHL_EXPORT
unsigned int tsm_symbol_get_width(struct tsm_symbol_table *tbl,
tsm_symbol_t sym)
{
int ret;
const uint32_t *ch;
size_t len;
if (!tbl)
tbl = tsm_symbol_table_default;
if (!tbl) {
ret = tsm_symbol_table_new(&tbl);
if (ret)
return sym;
tsm_symbol_table_default = tbl;
}
ch = tsm_symbol_get(tbl, &sym, &len);
if (len == 0)
return 0;
return tsm_ucs4_get_width(*ch);
}
SHL_EXPORT
tsm_age_t tsm_screen_draw(struct tsm_screen *con, tsm_screen_draw_cb draw_cb,
void *data)
{
unsigned int cur_x, cur_y;
unsigned int i, j, k;
struct line *iter, *line = NULL;
struct cell *cell, empty;
struct tsm_screen_attr attr;
int ret, warned = 0;
const uint32_t *ch;
size_t len;
bool in_sel = false, sel_start = false, sel_end = false;
bool was_sel = false;
tsm_age_t age;
if (!con || !draw_cb)
return 0;
screen_cell_init(con, &empty);
cur_x = con->cursor_x;
if (con->cursor_x >= con->size_x)
cur_x = con->size_x - 1;
cur_y = con->cursor_y;
if (con->cursor_y >= con->size_y)
cur_y = con->size_y - 1;
/* push each character into rendering pipeline */
iter = con->sb_pos;
k = 0;
if (con->sel_active) {
if (!con->sel_start.line && con->sel_start.y == SELECTION_TOP)
in_sel = !in_sel;
if (!con->sel_end.line && con->sel_end.y == SELECTION_TOP)
in_sel = !in_sel;
if (con->sel_start.line &&
(!iter || con->sel_start.line->sb_id < iter->sb_id))
in_sel = !in_sel;
if (con->sel_end.line &&
(!iter || con->sel_end.line->sb_id < iter->sb_id))
in_sel = !in_sel;
}
for (i = 0; i < con->size_y; ++i) {
if (iter) {
line = iter;
iter = iter->next;
} else {
line = con->lines[k];
k++;
}
if (con->sel_active) {
if (con->sel_start.line == line ||
(!con->sel_start.line &&
con->sel_start.y == k - 1))
sel_start = true;
else
sel_start = false;
if (con->sel_end.line == line ||
(!con->sel_end.line &&
con->sel_end.y == k - 1))
sel_end = true;
else
sel_end = false;
was_sel = false;
}
for (j = 0; j < con->size_x; ++j) {
if (j < line->size)
cell = &line->cells[j];
else
cell = ∅
memcpy(&attr, &cell->attr, sizeof(attr));
if (con->sel_active) {
if (sel_start &&
j == con->sel_start.x) {
was_sel = in_sel;
in_sel = !in_sel;
}
if (sel_end &&
j == con->sel_end.x) {
was_sel = in_sel;
in_sel = !in_sel;
}
}
if (k == cur_y + 1 && j == cur_x &&
!(con->flags & TSM_SCREEN_HIDE_CURSOR))
attr.underline = !attr.underline;
//attr.inverse = !attr.inverse;
/* TODO: do some more sophisticated inverse here. When
* INVERSE mode is set, we should instead just select
* inverse colors instead of switching background and
* foreground */
if (con->flags & TSM_SCREEN_INVERSE)
attr.inverse = !attr.inverse;
if (in_sel || was_sel) {
was_sel = false;
attr.inverse = !attr.inverse;
}
if (con->age_reset) {
age = 0;
} else {
age = cell->age;
if (line->age > age)
age = line->age;
if (con->age > age)
age = con->age;
}
ch = tsm_symbol_get(con->sym_table, &cell->ch, &len);
if (cell->ch == ' ' || cell->ch == 0)
len = 0;
ret = draw_cb(con, cell->ch, ch, len, cell->width,
j, i, &attr, age, data);
if (ret && warned++ < 3) {
llog_debug(con,
"cannot draw glyph at %ux%u via text-renderer",
j, i);
if (warned == 3)
llog_debug(con,
"suppressing further warnings during this rendering round");
}
}
}
if (con->age_reset) {
con->age_reset = 0;
return 0;
} else {
return con->age_cnt;
}
}
tsm_symbol_t tsm_symbol_append(struct tsm_symbol_table *tbl,
tsm_symbol_t sym, uint32_t ucs4)
{
uint32_t buf[TSM_UCS4_MAXLEN + 1], nsym, *nval;
const uint32_t *ptr;
size_t s;
bool res;
int ret;
if (!tbl)
return sym;
if (ucs4 > TSM_UCS4_MAX)
return sym;
ptr = tsm_symbol_get(tbl, &sym, &s);
if (s >= TSM_UCS4_MAXLEN)
return sym;
memcpy(buf, ptr, s * sizeof(uint32_t));
buf[s++] = ucs4;
buf[s++] = TSM_UCS4_MAX + 1;
res = shl_htable_lookup(&tbl->symbols, buf, hash_ucs4(buf, NULL),
(void**)&nval);
if (res) {
/* key is prefixed with actual value */
return *--nval;
}
/* We save the key in nval and prefix it with the new ID. Note that
* the prefix is hidden, we actually store "++nval" in the htable. */
nval = malloc(sizeof(uint32_t) * (s + 1));
if (!nval)
return sym;
++nval;
memcpy(nval, buf, s * sizeof(uint32_t));
nsym = tbl->next_id + 1;
/* Out of IDs; we actually have 2 Billion IDs so this seems
* very unlikely but lets be safe here */
if (nsym <= tbl->next_id++)
goto err_id;
/* store ID hidden before the key */
*(nval - 1) = nsym;
ret = shl_htable_insert(&tbl->symbols, nval, hash_ucs4(nval, NULL));
if (ret)
goto err_id;
ret = shl_array_push(tbl->index, &nval);
if (ret)
goto err_symbol;
return nsym;
err_symbol:
shl_htable_remove(&tbl->symbols, nval, hash_ucs4(nval, NULL), NULL);
err_id:
--tbl->next_id;
free(nval);
return sym;
}
SHL_EXPORT
tsm_symbol_t tsm_symbol_append(struct tsm_symbol_table *tbl,
tsm_symbol_t sym, uint32_t ucs4)
{
uint32_t buf[TSM_UCS4_MAXLEN + 1], nsym, *nval;
const uint32_t *ptr;
size_t s;
void *tmp;
bool res;
int ret;
if (!tbl)
tbl = tsm_symbol_table_default;
if (!tbl) {
ret = tsm_symbol_table_new(&tbl);
if (ret)
return sym;
tsm_symbol_table_default = tbl;
}
if (ucs4 > TSM_UCS4_MAX)
return sym;
ptr = tsm_symbol_get(tbl, &sym, &s);
if (s >= TSM_UCS4_MAXLEN)
return sym;
memcpy(buf, ptr, s * sizeof(uint32_t));
buf[s++] = ucs4;
buf[s++] = TSM_UCS4_MAX + 1;
res = shl_hashtable_find(tbl->symbols, &tmp, buf);
if (res)
return (uint32_t)(long)tmp;
nval = malloc(sizeof(uint32_t) * s);
if (!nval)
return sym;
memcpy(nval, buf, s * sizeof(uint32_t));
nsym = tbl->next_id + 1;
/* Out of IDs; we actually have 2 Billion IDs so this seems
* very unlikely but lets be safe here */
if (nsym <= tbl->next_id++)
goto err_id;
ret = shl_hashtable_insert(tbl->symbols, nval, (void*)(long)nsym);
if (ret)
goto err_id;
ret = shl_array_push(tbl->index, &nval);
if (ret)
goto err_symbol;
return nsym;
err_symbol:
shl_hashtable_remove(tbl->symbols, nval);
err_id:
--tbl->next_id;
free(nval);
return sym;
}
void tsm_screen_draw(struct tsm_screen *con,
tsm_screen_prepare_cb prepare_cb,
tsm_screen_draw_cb draw_cb,
tsm_screen_render_cb render_cb,
void *data)
{
unsigned int cur_x, cur_y;
unsigned int i, j, k;
struct line *iter, *line = NULL;
struct cell *cell;
struct tsm_screen_attr attr;
bool cursor_done = false;
int ret, warned = 0;
uint64_t time_prep = 0, time_draw = 0, time_rend = 0;
const uint32_t *ch;
size_t len;
struct cell empty;
if (!con || !draw_cb)
return;
cell_init(con, &empty);
cur_x = con->cursor_x;
if (con->cursor_x >= con->size_x)
cur_x = con->size_x - 1;
cur_y = con->cursor_y;
if (con->cursor_y >= con->size_y)
cur_y = con->size_y - 1;
/* render preparation */
if (prepare_cb) {
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
shl_timer_reset(con->timer);
ret = prepare_cb(con, data);
if (ret) {
llog_warning(con,
"cannot prepare text-renderer for rendering");
return;
}
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
time_prep = shl_timer_elapsed(con->timer);
} else {
time_prep = 0;
}
/* push each character into rendering pipeline */
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
shl_timer_reset(con->timer);
iter = con->sb_pos;
k = 0;
for (i = 0; i < con->size_y; ++i) {
if (iter) {
line = iter;
iter = iter->next;
} else {
line = con->lines[k];
k++;
}
for (j = 0; j < con->size_x; ++j) {
if (j < line->size)
cell = &line->cells[j];
else
cell = ∅
memcpy(&attr, &cell->attr, sizeof(attr));
if (k == cur_y + 1 &&
j == cur_x) {
cursor_done = true;
if (!(con->flags & TSM_SCREEN_HIDE_CURSOR))
attr.inverse = !attr.inverse;
}
/* TODO: do some more sophisticated inverse here. When
* INVERSE mode is set, we should instead just select
* inverse colors instead of switching background and
* foreground */
if (con->flags & TSM_SCREEN_INVERSE)
attr.inverse = !attr.inverse;
ch = tsm_symbol_get(NULL, &cell->ch, &len);
if (cell->ch == ' ' || cell->ch == 0)
len = 0;
ret = draw_cb(con, cell->ch, ch, len, j, i, &attr,
data);
if (ret && warned++ < 3) {
llog_debug(con,
"cannot draw glyph at %ux%u via text-renderer",
j, i);
if (warned == 3)
llog_debug(con,
"suppressing further warnings during this rendering round");
}
}
if (k == cur_y + 1 && !cursor_done) {
cursor_done = true;
if (!(con->flags & TSM_SCREEN_HIDE_CURSOR)) {
if (!(con->flags & TSM_SCREEN_INVERSE))
attr.inverse = !attr.inverse;
draw_cb(con, 0, NULL, 0, cur_x, i, &attr, data);
}
}
}
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
time_draw = shl_timer_elapsed(con->timer);
/* perform final rendering steps */
if (render_cb) {
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
shl_timer_reset(con->timer);
ret = render_cb(con, data);
if (ret)
llog_warning(con,
"cannot render via text-renderer");
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
time_rend = shl_timer_elapsed(con->timer);
} else {
time_rend = 0;
}
if (con->opts & TSM_SCREEN_OPT_RENDER_TIMING)
llog_debug(con,
"timing: sum: %" PRIu64 " prepare: %" PRIu64 " draw: %" PRIu64 " render: %" PRIu64,
time_prep + time_draw + time_rend,
time_prep, time_draw, time_rend);
}
