1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <cursor.h>
5
6 static uint8 expand[16] = {
7 0x00, 0x03, 0x0c, 0x0f,
8 0x30, 0x33, 0x3c, 0x3f,
9 0xc0, 0xc3, 0xcc, 0xcf,
10 0xf0, 0xf3, 0xfc, 0xff,
11 };
12
13 void
scalecursor(Cursor2 * c2,Cursor * c)14 scalecursor(Cursor2 *c2, Cursor *c)
15 {
16 int y;
17
18 c2->offset.x = 2*c->offset.x;
19 c2->offset.y = 2*c->offset.y;
20 memset(c2->clr, 0, sizeof c2->clr);
21 memset(c2->set, 0, sizeof c2->set);
22 for(y = 0; y < 16; y++) {
23 c2->clr[8*y] = c2->clr[8*y+4] = expand[c->clr[2*y]>>4];
24 c2->set[8*y] = c2->set[8*y+4] = expand[c->set[2*y]>>4];
25 c2->clr[8*y+1] = c2->clr[8*y+5] = expand[c->clr[2*y]&15];
26 c2->set[8*y+1] = c2->set[8*y+5] = expand[c->set[2*y]&15];
27 c2->clr[8*y+2] = c2->clr[8*y+6] = expand[c->clr[2*y+1]>>4];
28 c2->set[8*y+2] = c2->set[8*y+6] = expand[c->set[2*y+1]>>4];
29 c2->clr[8*y+3] = c2->clr[8*y+7] = expand[c->clr[2*y+1]&15];
30 c2->set[8*y+3] = c2->set[8*y+7] = expand[c->set[2*y+1]&15];
31 }
32 }
33