52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
#pragma src "/sys/src/libmemlayer"
|
|
#pragma lib "libmemlayer.a"
|
|
|
|
typedef struct Memscreen Memscreen;
|
|
typedef void (*Refreshfn)(Memimage*, Rectangle, void*);
|
|
|
|
struct Memscreen
|
|
{
|
|
Memimage *frontmost; /* frontmost layer on screen */
|
|
Memimage *rearmost; /* rearmost layer on screen */
|
|
Memimage *image; /* upon which all layers are drawn */
|
|
Memimage *fill; /* if non-zero, picture to use when repainting */
|
|
};
|
|
|
|
struct Memlayer
|
|
{
|
|
Rectangle screenr; /* true position of layer on screen */
|
|
Point delta; /* add delta to go from image coords to screen */
|
|
Memscreen *screen; /* screen this layer belongs to */
|
|
Memimage *front; /* window in front of this one */
|
|
Memimage *rear; /* window behind this one*/
|
|
int clear; /* layer is fully visible */
|
|
Memimage *save; /* save area for obscured parts */
|
|
Refreshfn refreshfn; /* function to call to refresh obscured parts if save==nil */
|
|
void *refreshptr; /* argument to refreshfn */
|
|
};
|
|
|
|
/*
|
|
* These functions accept local coordinates
|
|
*/
|
|
int memload(Memimage*, Rectangle, uchar*, int, int);
|
|
int memunload(Memimage*, Rectangle, uchar*, int);
|
|
|
|
/*
|
|
* All these functions accept screen coordinates, not local ones.
|
|
*/
|
|
void _memlayerop(void (*fn)(Memimage*, Rectangle, Rectangle, void*, int), Memimage*, Rectangle, Rectangle, void*);
|
|
Memimage* memlalloc(Memscreen*, Rectangle, Refreshfn, void*, ulong);
|
|
void memldelete(Memimage*);
|
|
void memlfree(Memimage*);
|
|
void memltofront(Memimage*);
|
|
void memltofrontn(Memimage**, int);
|
|
void _memltofrontfill(Memimage*, int);
|
|
void memltorear(Memimage*);
|
|
void memltorearn(Memimage**, int);
|
|
int memlsetrefresh(Memimage*, Refreshfn, void*);
|
|
void memlhide(Memimage*, Rectangle);
|
|
void memlexpose(Memimage*, Rectangle);
|
|
void _memlsetclear(Memscreen*);
|
|
int memlorigin(Memimage*, Point, Point);
|
|
void memlnorefresh(Memimage*, Rectangle, void*);
|