cursor.c (908B)
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 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 }