/* Get cell for reading. */
void
grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
{
struct grid_line *gl;
struct grid_cell_entry *gce;
if (grid_check_y(gd, py) != 0 || px >= gd->linedata[py].cellsize) {
memcpy(gc, &grid_default_cell, sizeof *gc);
return;
}
gl = &gd->linedata[py];
gce = &gl->celldata[px];
if (gce->flags & GRID_FLAG_EXTENDED) {
if (gce->offset >= gl->extdsize)
memcpy(gc, &grid_default_cell, sizeof *gc);
else
memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
return;
}
gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
gc->attr = gce->data.attr;
gc->fg = gce->data.fg;
if (gce->flags & GRID_FLAG_FG256)
gc->fg |= COLOUR_FLAG_256;
gc->bg = gce->data.bg;
if (gce->flags & GRID_FLAG_BG256)
gc->bg |= COLOUR_FLAG_256;
utf8_set(&gc->data, gce->data.data);
}
/* VT100 alignment test. */
void
screen_write_alignmenttest(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
struct tty_ctx ttyctx;
struct grid_cell gc;
u_int xx, yy;
u_int sx = screen_size_x(s), sy = screen_size_y(s);
screen_write_initctx(ctx, &ttyctx);
screen_dirty_clear(s, 0, 0, sx - 1, sy - 1);
memcpy(&gc, &grid_default_cell, sizeof gc);
utf8_set(&gc.data, 'E');
for (yy = 0; yy < screen_size_y(s); yy++) {
for (xx = 0; xx < screen_size_x(s); xx++)
grid_view_set_cell(s->grid, xx, yy, &gc);
}
s->cx = 0;
s->cy = 0;
s->rupper = 0;
s->rlower = screen_size_y(s) - 1;
tty_write(tty_cmd_alignmenttest, &ttyctx);
}
/* Set cells at relative position. */
void
grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
const char *s, size_t slen)
{
struct grid_line *gl;
struct grid_cell_entry *gce;
struct grid_cell *gcp;
u_int i;
if (grid_check_y(gd, __func__, py) != 0)
return;
grid_expand_line(gd, py, px + slen, 8);
gl = &gd->linedata[py];
if (px + slen > gl->cellused)
gl->cellused = px + slen;
for (i = 0; i < slen; i++) {
gce = &gl->celldata[px + i];
if (grid_need_extended_cell(gce, gc)) {
gcp = grid_extended_cell(gl, gce, gc);
utf8_set(&gcp->data, s[i]);
} else
grid_store_cell(gce, gc, s[i]);
}
}
/*
* Convert a string into a buffer of UTF-8 characters. Terminated by size == 0.
* Caller frees.
*/
struct utf8_data *
utf8_fromcstr(const char *src)
{
struct utf8_data *dst;
size_t n;
enum utf8_state more;
dst = NULL;
n = 0;
while (*src != '\0') {
dst = xreallocarray(dst, n + 1, sizeof *dst);
if ((more = utf8_open(&dst[n], *src)) == UTF8_MORE) {
while (*++src != '\0' && more == UTF8_MORE)
more = utf8_append(&dst[n], *src);
if (more == UTF8_DONE) {
n++;
continue;
}
src -= dst[n].have;
}
utf8_set(&dst[n], *src);
n++;
src++;
}
dst = xreallocarray(dst, n + 1, sizeof *dst);
dst[n].size = 0;
return (dst);
}
/* Write character. */
void
screen_write_putc(struct screen_write_ctx *ctx, struct grid_cell *gc,
u_char ch)
{
utf8_set(&gc->data, ch);
screen_write_cell(ctx, gc);
}
/* Write character. */
void
screen_write_putc(struct screen_write_ctx *ctx, const struct grid_cell *gcp,
u_char ch)
{
struct grid_cell gc;
memcpy(&gc, gcp, sizeof gc);
utf8_set(&gc.data, ch);
screen_write_cell(ctx, &gc);
}
/* Get cell from line. */
static void
grid_get_cell1(struct grid_line *gl, u_int px, struct grid_cell *gc)
{
struct grid_cell_entry *gce = &gl->celldata[px];
if (gce->flags & GRID_FLAG_EXTENDED) {
if (gce->offset >= gl->extdsize)
memcpy(gc, &grid_default_cell, sizeof *gc);
else
memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
return;
}
gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
gc->attr = gce->data.attr;
gc->fg = gce->data.fg;
if (gce->flags & GRID_FLAG_FG256)
gc->fg |= COLOUR_FLAG_256;
gc->bg = gce->data.bg;
if (gce->flags & GRID_FLAG_BG256)
gc->bg |= COLOUR_FLAG_256;
utf8_set(&gc->data, gce->data.data);
}
