1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <cursor.h>
static uint8 expand[16] = {
0x00, 0x03, 0x0c, 0x0f,
0x30, 0x33, 0x3c, 0x3f,
0xc0, 0xc3, 0xcc, 0xcf,
0xf0, 0xf3, 0xfc, 0xff,
};
void
scalecursor(Cursor2 *c2, Cursor *c)
{
int y;
c2->offset.x = 2*c->offset.x;
c2->offset.y = 2*c->offset.y;
memset(c2->clr, 0, sizeof c2->clr);
memset(c2->set, 0, sizeof c2->set);
for(y = 0; y < 16; y++) {
c2->clr[8*y] = c2->clr[8*y+4] = expand[c->clr[2*y]>>4];
c2->set[8*y] = c2->set[8*y+4] = expand[c->set[2*y]>>4];
c2->clr[8*y+1] = c2->clr[8*y+5] = expand[c->clr[2*y]&15];
c2->set[8*y+1] = c2->set[8*y+5] = expand[c->set[2*y]&15];
c2->clr[8*y+2] = c2->clr[8*y+6] = expand[c->clr[2*y+1]>>4];
c2->set[8*y+2] = c2->set[8*y+6] = expand[c->set[2*y+1]>>4];
c2->clr[8*y+3] = c2->clr[8*y+7] = expand[c->clr[2*y+1]&15];
c2->set[8*y+3] = c2->set[8*y+7] = expand[c->set[2*y+1]&15];
}
}
|