1 76193d7c 2003-09-30 devnull typedef struct Memscreen Memscreen;
 2 76193d7c 2003-09-30 devnull typedef void (*Refreshfn)(Memimage*, Rectangle, void*);
 3 76193d7c 2003-09-30 devnull 
 4 76193d7c 2003-09-30 devnull struct Memscreen
 5 76193d7c 2003-09-30 devnull {
 6 76193d7c 2003-09-30 devnull 	Memimage	*frontmost;	/* frontmost layer on screen */
 7 76193d7c 2003-09-30 devnull 	Memimage	*rearmost;	/* rearmost layer on screen */
 8 76193d7c 2003-09-30 devnull 	Memimage	*image;		/* upon which all layers are drawn */
 9 76193d7c 2003-09-30 devnull 	Memimage	*fill;			/* if non-zero, picture to use when repainting */
10 76193d7c 2003-09-30 devnull };
11 76193d7c 2003-09-30 devnull 
12 76193d7c 2003-09-30 devnull struct Memlayer
13 76193d7c 2003-09-30 devnull {
14 76193d7c 2003-09-30 devnull 	Rectangle		screenr;	/* true position of layer on screen */
15 76193d7c 2003-09-30 devnull 	Point			delta;	/* add delta to go from image coords to screen */
16 76193d7c 2003-09-30 devnull 	Memscreen	*screen;	/* screen this layer belongs to */
17 76193d7c 2003-09-30 devnull 	Memimage	*front;	/* window in front of this one */
18 76193d7c 2003-09-30 devnull 	Memimage	*rear;	/* window behind this one*/
19 76193d7c 2003-09-30 devnull 	int		clear;	/* layer is fully visible */
20 76193d7c 2003-09-30 devnull 	Memimage	*save;	/* save area for obscured parts */
21 76193d7c 2003-09-30 devnull 	Refreshfn	refreshfn;		/* function to call to refresh obscured parts if save==nil */
22 76193d7c 2003-09-30 devnull 	void		*refreshptr;	/* argument to refreshfn */
23 76193d7c 2003-09-30 devnull };
24 76193d7c 2003-09-30 devnull 
25 76193d7c 2003-09-30 devnull /*
26 76193d7c 2003-09-30 devnull  * These functions accept local coordinates
27 76193d7c 2003-09-30 devnull  */
28 76193d7c 2003-09-30 devnull int			memload(Memimage*, Rectangle, uchar*, int, int);
29 76193d7c 2003-09-30 devnull int			memunload(Memimage*, Rectangle, uchar*, int);
30 76193d7c 2003-09-30 devnull 
31 76193d7c 2003-09-30 devnull /*
32 76193d7c 2003-09-30 devnull  * All these functions accept screen coordinates, not local ones.
33 76193d7c 2003-09-30 devnull  */
34 76193d7c 2003-09-30 devnull void			_memlayerop(void (*fn)(Memimage*, Rectangle, Rectangle, void*, int), Memimage*, Rectangle, Rectangle, void*);
35 76193d7c 2003-09-30 devnull Memimage*	memlalloc(Memscreen*, Rectangle, Refreshfn, void*, u32int);
36 76193d7c 2003-09-30 devnull void			memldelete(Memimage*);
37 76193d7c 2003-09-30 devnull void			memlfree(Memimage*);
38 76193d7c 2003-09-30 devnull void			memltofront(Memimage*);
39 76193d7c 2003-09-30 devnull void			memltofrontn(Memimage**, int);
40 76193d7c 2003-09-30 devnull void			_memltofrontfill(Memimage*, int);
41 76193d7c 2003-09-30 devnull void			memltorear(Memimage*);
42 76193d7c 2003-09-30 devnull void			memltorearn(Memimage**, int);
43 76193d7c 2003-09-30 devnull int			memlsetrefresh(Memimage*, Refreshfn, void*);
44 76193d7c 2003-09-30 devnull void			memlhide(Memimage*, Rectangle);
45 76193d7c 2003-09-30 devnull void			memlexpose(Memimage*, Rectangle);
46 76193d7c 2003-09-30 devnull void			_memlsetclear(Memscreen*);
47 76193d7c 2003-09-30 devnull int			memlorigin(Memimage*, Point, Point);
48 76193d7c 2003-09-30 devnull void			memlnorefresh(Memimage*, Rectangle, void*);