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85ef9df586
This patch takes a bit from the foreground color value in a cell (todo: split up foreground/background into bitfields with a separate field for 'foreground/background' has been set), and only re-renders cells that aren't marked as clean. Note: we use a 'clean' bit rather than a 'dirty' bit to make it easy to erase cells - we can (keep doing) do that by simply memsetting a cell range to 0.
46 lines
972 B
C
46 lines
972 B
C
#include "grid.h"
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//#include <string.h>
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#include <assert.h>
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#define LOG_MODULE "grid"
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#define LOG_ENABLE_DBG 0
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#include "log.h"
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void
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grid_swap_row(struct grid *grid, int row_a, int row_b)
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{
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assert(grid->offset >= 0);
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assert(row_a != row_b);
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int real_a = (grid->offset + row_a + grid->num_rows) % grid->num_rows;
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int real_b = (grid->offset + row_b + grid->num_rows) % grid->num_rows;
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assert(real_a >= 0);
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assert(real_b >= 0);
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struct row *tmp = grid->rows[real_a];
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grid->rows[real_a] = grid->rows[real_b];
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grid->rows[real_b] = tmp;
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}
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struct row *
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grid_row_alloc(int cols)
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{
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struct row *row = malloc(sizeof(*row));
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row->cells = calloc(cols, sizeof(row->cells[0]));
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for (size_t c = 0; c < cols; c++)
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row->cells[c].attrs.clean = 1;
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row->dirty = false; /* TODO: parameter? */
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return row;
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}
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void
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grid_row_free(struct row *row)
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{
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if (row == NULL)
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return;
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free(row->cells);
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free(row);
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}
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