ref: 41e27b2d10c6a60c49931332e8677438736a1e36
dir: /os/pc/screen.h/
typedef struct Cursor Cursor; enum { CURSWID = 16, CURSHGT = 16, }; struct Cursor { Point offset; uchar clr[CURSWID/BI2BY*CURSHGT]; uchar set[CURSWID/BI2BY*CURSHGT]; }; typedef struct Cursorinfo Cursorinfo; struct Cursorinfo { Cursor; Lock; }; /* devmouse.c */ extern void mousetrack(int, int, int, int); extern Point mousexy(void); extern void mouseaccelerate(int); extern int m3mouseputc(Queue*, int); extern int m5mouseputc(Queue*, int); extern int mouseputc(Queue*, int); extern Cursorinfo cursor; extern Cursor arrow; /* * Generic VGA registers. */ enum { MiscW = 0x03C2, /* Miscellaneous Output (W) */ MiscR = 0x03CC, /* Miscellaneous Output (R) */ Status0 = 0x03C2, /* Input status 0 (R) */ Status1 = 0x03DA, /* Input Status 1 (R) */ FeatureR = 0x03CA, /* Feature Control (R) */ FeatureW = 0x03DA, /* Feature Control (W) */ Seqx = 0x03C4, /* Sequencer Index, Data at Seqx+1 */ Crtx = 0x03D4, /* CRT Controller Index, Data at Crtx+1 */ Grx = 0x03CE, /* Graphics Controller Index, Data at Grx+1 */ Attrx = 0x03C0, /* Attribute Controller Index and Data */ PaddrW = 0x03C8, /* Palette Address Register, write */ Pdata = 0x03C9, /* Palette Data Register */ Pixmask = 0x03C6, /* Pixel Mask Register */ PaddrR = 0x03C7, /* Palette Address Register, read */ Pstatus = 0x03C7, /* DAC Status (RO) */ Pcolours = 256, /* Palette */ Pred = 0, Pgreen = 1, Pblue = 2, Pblack = 0x00, Pwhite = 0xFF, }; #define VGAMEM() 0xA0000 #define vgai(port) inb(port) #define vgao(port, data) outb(port, data) extern int vgaxi(long, uchar); extern int vgaxo(long, uchar, uchar); /* */ typedef struct VGAdev VGAdev; typedef struct VGAcur VGAcur; typedef struct VGAscr VGAscr; struct VGAdev { char* name; void (*enable)(VGAscr*); void (*disable)(VGAscr*); void (*page)(VGAscr*, int); ulong (*linear)(VGAscr*, int*, int*); void (*drawinit)(VGAscr*); int (*fill)(VGAscr*, Rectangle, ulong); void (*ovlctl)(VGAscr*, Chan*, void*, int); int (*ovlwrite)(VGAscr*, void*, int, vlong); void (*flush)(VGAscr*, Rectangle); }; struct VGAcur { char* name; void (*enable)(VGAscr*); void (*disable)(VGAscr*); void (*load)(VGAscr*, Cursor*); int (*move)(VGAscr*, Point); int doespanning; }; /* */ struct VGAscr { Lock devlock; VGAdev* dev; VGAcur* cur; ulong storage; Cursor; int useflush; ulong aperture; /* physical address */ int isupamem; int apsize; ulong io; /* device specific registers */ ulong colormap[Pcolours][3]; int palettedepth; ulong *mmio; Memimage* gscreen; Memdata* gscreendata; Memsubfont* memdefont; int (*fill)(VGAscr*, Rectangle, ulong); int (*scroll)(VGAscr*, Rectangle, Rectangle); void (*blank)(VGAscr*, int); ulong id; /* internal identifier for driver use */ int isblank; int overlayinit; }; extern VGAscr vgascreen[]; enum { Backgnd = 0, /* black */ }; /* mouse.c */ extern void mousectl(Cmdbuf*); /* screen.c */ extern int hwaccel; /* use hw acceleration; default on */ extern int hwblank; /* use hw blanking; default on */ extern int panning; /* use virtual screen panning; default off */ extern void addvgaseg(char*, ulong, ulong); extern uchar* attachscreen(Rectangle*, ulong*, int*, int*, int*); extern void flushmemscreen(Rectangle); extern int cursoron(int); extern void cursoroff(int); extern void setcursor(Cursor*); extern int screensize(int, int, int, ulong); extern int screenaperture(int, int); extern Rectangle physgscreenr; /* actual monitor size */ extern void blankscreen(int); /* devdraw.c */ extern void deletescreenimage(void); extern int drawhasclients(void); extern ulong blanktime; extern void setscreenimageclipr(Rectangle); extern void drawflush(void); extern int drawidletime(void); /* vga.c */ extern void vgascreenwin(VGAscr*); extern void vgaimageinit(ulong); extern ulong vgapcilinear(VGAscr*, int*, int*, int, int); extern void drawblankscreen(int); extern void vgablank(VGAscr*, int);