/* Move line data. */
void
grid_reflow_move(struct grid *dst, u_int *py, struct grid_line *src_gl)
{
struct grid_line *dst_gl;
/* Create new line. */
if (*py >= dst->hsize + dst->sy)
grid_scroll_history(dst);
dst_gl = &dst->linedata[*py];
(*py)++;
/* Copy the old line. */
memcpy(dst_gl, src_gl, sizeof *dst_gl);
dst_gl->flags &= ~GRID_LINE_WRAPPED;
/* Clear old line. */
src_gl->celldata = NULL;
}
/* Scroll region up. */
void
grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower)
{
if (gd->flags & GRID_HISTORY) {
grid_collect_history(gd);
if (rupper == 0 && rlower == gd->sy - 1)
grid_scroll_history(gd);
else {
rupper = grid_view_y(gd, rupper);
rlower = grid_view_y(gd, rlower);
grid_scroll_history_region(gd, rupper, rlower);
}
} else {
rupper = grid_view_y(gd, rupper);
rlower = grid_view_y(gd, rlower);
grid_move_lines(gd, rupper, rupper + 1, rlower - rupper);
}
}
/* Clear into history. */
void
grid_view_clear_history(struct grid *gd)
{
struct grid_line *gl;
u_int yy, last;
/* Find the last used line. */
last = 0;
for (yy = 0; yy < gd->sy; yy++) {
gl = &gd->linedata[grid_view_y(gd, yy)];
if (gl->cellsize != 0)
last = yy + 1;
}
if (last == 0)
return;
/* Scroll the lines into the history. */
for (yy = 0; yy < last; yy++) {
grid_collect_history(gd);
grid_scroll_history(gd);
}
}
/* Split line data. */
void
grid_reflow_split(struct grid *dst, u_int *py, struct grid_line *src_gl,
u_int new_x, u_int offset)
{
struct grid_line *dst_gl = NULL;
u_int to_copy;
/* Loop and copy sections of the source line. */
while (src_gl->cellsize > 0) {
/* Create new line. */
if (*py >= dst->hsize + dst->sy)
grid_scroll_history(dst);
dst_gl = &dst->linedata[*py];
(*py)++;
/* How much should we copy? */
to_copy = new_x;
if (to_copy > src_gl->cellsize)
to_copy = src_gl->cellsize;
/* Expand destination line. */
dst_gl->celldata = xreallocarray(NULL, to_copy,
sizeof *dst_gl->celldata);
dst_gl->cellsize = to_copy;
dst_gl->flags |= GRID_LINE_WRAPPED;
/* Copy the data. */
memcpy(&dst_gl->celldata[0], &src_gl->celldata[offset],
to_copy * sizeof dst_gl->celldata[0]);
/* Move offset and reduce old line size. */
offset += to_copy;
src_gl->cellsize -= to_copy;
}
/* Last line is not wrapped. */
if (dst_gl != NULL)
dst_gl->flags &= ~GRID_LINE_WRAPPED;
}