1 #include <u.h> 2 #include <libc.h> 3 #include <draw.h> 4 5 void 6 _setdrawop(Display *d, Drawop op) 7 { 8 uchar *a; 9 10 if(op != SoverD){ 11 a = bufimage(d, 1+1); 12 if(a == 0) 13 return; 14 a[0] = 'O'; 15 a[1] = op; 16 } 17 } 18 19 static void 20 draw1(Image *dst, Rectangle *r, Image *src, Point *p0, Image *mask, Point *p1, Drawop op) 21 { 22 uchar *a; 23 24 _setdrawop(dst->display, op); 25 26 a = bufimage(dst->display, 1+4+4+4+4*4+2*4+2*4); 27 if(a == 0) 28 return; 29 if(src == nil) 30 src = dst->display->black; 31 if(mask == nil) 32 mask = dst->display->opaque; 33 a[0] = 'd'; 34 BPLONG(a+1, dst->id); 35 BPLONG(a+5, src->id); 36 BPLONG(a+9, mask->id); 37 BPLONG(a+13, r->min.x); 38 BPLONG(a+17, r->min.y); 39 BPLONG(a+21, r->max.x); 40 BPLONG(a+25, r->max.y); 41 BPLONG(a+29, p0->x); 42 BPLONG(a+33, p0->y); 43 BPLONG(a+37, p1->x); 44 BPLONG(a+41, p1->y); 45 } 46 47 void 48 draw(Image *dst, Rectangle r, Image *src, Image *mask, Point p1) 49 { 50 draw1(dst, &r, src, &p1, mask, &p1, SoverD); 51 } 52 53 void 54 drawop(Image *dst, Rectangle r, Image *src, Image *mask, Point p1, Drawop op) 55 { 56 draw1(dst, &r, src, &p1, mask, &p1, op); 57 } 58 59 void 60 gendraw(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1) 61 { 62 draw1(dst, &r, src, &p0, mask, &p1, SoverD); 63 } 64 65 void 66 gendrawop(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1, Drawop op) 67 { 68 draw1(dst, &r, src, &p0, mask, &p1, op); 69 } 70