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#include <u.h>
#include <libn.h>
#include "buffer.h"
typedef struct Rect Rect;
typedef struct Window Window;
/* origin upper left corner */
struct Rect
{
int r0, c0, rows, cols;
};
struct Window
{
Buffer buffer[2], *buf;
Rect area; /* on screen */
Pen pen, spen; /* current and saved pen */
struct {
uint visible : 1;
int row, col; /* saved cursor row/colmn (zero based) */
int srow, scol; /* saved cursor row/colmn (zero based) */
} c;
}
/* functions */
Window *
makewindow(
t->pen = (Pen) {
.state = PenNormal,
.col = {-1, -1},
};
t->buffer = &t->buf[0];
if (!binit(&t->buf[0], rows, cols, size) ||
!binit(&t->buf[1], rows, cols, 0)) {
free(t);
return nil;
}
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