mirror of
https://codeberg.org/dnkl/foot.git
synced 2026-02-05 04:06:08 -05:00
1ff1b3a71e
The row array may now contain NULL pointers. This means the corresponding row hasn't yet been allocated and initialized. On a resize, we explicitly allocate the visible rows. Uninitialized rows are then allocated the first time they are referenced.
46 lines
969 B
C
46 lines
969 B
C
#include "grid.h"
|
|
|
|
//#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#define LOG_MODULE "grid"
|
|
#define LOG_ENABLE_DBG 0
|
|
#include "log.h"
|
|
|
|
void
|
|
grid_swap_row(struct grid *grid, int row_a, int row_b)
|
|
{
|
|
assert(grid->offset >= 0);
|
|
assert(row_a != row_b);
|
|
assert(row_a >= 0);
|
|
assert(row_b >= 0);
|
|
|
|
int real_a = (grid->offset + row_a + grid->num_rows) % grid->num_rows;
|
|
int real_b = (grid->offset + row_b + grid->num_rows) % grid->num_rows;
|
|
|
|
struct row *tmp = grid->rows[real_a];
|
|
grid->rows[real_a] = grid->rows[real_b];
|
|
grid->rows[real_b] = tmp;
|
|
|
|
grid->rows[real_a]->dirty = true;
|
|
grid->rows[real_b]->dirty = true;
|
|
}
|
|
|
|
struct row *
|
|
grid_row_alloc(int cols)
|
|
{
|
|
struct row *row = malloc(sizeof(*row));
|
|
row->cells = calloc(cols, sizeof(row->cells[0]));
|
|
row->dirty = false; /* TODO: parameter? */
|
|
return row;
|
|
}
|
|
|
|
void
|
|
grid_row_free(struct row *row)
|
|
{
|
|
if (row == NULL)
|
|
return;
|
|
|
|
free(row->cells);
|
|
free(row);
|
|
}
|