#include #include #include #include void gbitbltclip(void *vp) { int dx, dy; int i; struct{ GBitmap *dm; Point p; GBitmap *sm; Rectangle r; Fcode f; }*bp; bp = vp; dx = Dx(bp->r); dy = Dy(bp->r); if(bp->p.x < bp->dm->clipr.min.x){ i = bp->dm->clipr.min.x-bp->p.x; bp->r.min.x += i; bp->p.x += i; dx -= i; } if(bp->p.y < bp->dm->clipr.min.y){ i = bp->dm->clipr.min.y-bp->p.y; bp->r.min.y += i; bp->p.y += i; dy -= i; } if(bp->p.x+dx > bp->dm->clipr.max.x) bp->r.max.x -= bp->p.x+dx-bp->dm->clipr.max.x; if(bp->p.y+dy > bp->dm->clipr.max.y) bp->r.max.y -= bp->p.y+dy-bp->dm->clipr.max.y; if(bp->r.min.x < bp->sm->clipr.min.x){ i = bp->sm->clipr.min.x-bp->r.min.x; bp->p.x += i; bp->r.min.x += i; } if(bp->r.min.y < bp->sm->clipr.min.y){ i = bp->sm->clipr.min.y-bp->r.min.y; bp->p.y += i; bp->r.min.y += i; } if(bp->r.max.x > bp->sm->clipr.max.x) bp->r.max.x = bp->sm->clipr.max.x; if(bp->r.max.y > bp->sm->clipr.max.y) bp->r.max.y = bp->sm->clipr.max.y; }