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-/*
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- * This file is part of the UCB release of Plan 9. It is subject to the license
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- * terms in the LICENSE file found in the top-level directory of this
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- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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- * part of the UCB release of Plan 9, including this file, may be copied,
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- * modified, propagated, or distributed except according to the terms contained
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- * in the LICENSE file.
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- */
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-
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-#ifndef _PLAN9_SOURCE
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- This header file is an extension to ANSI/POSIX
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-#endif
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-
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-#ifndef __DRAW_H_
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-#define __DRAW_H_
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-#pragma src "/sys/src/ape/lib/draw"
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-#pragma lib "/$M/lib/ape/libdraw.a"
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-
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-#include <u.h>
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-#include <fmt.h>
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-#include <qlock.h>
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-
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-typedef struct Cachefont Cachefont;
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-typedef struct Cacheinfo Cacheinfo;
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-typedef struct Cachesubf Cachesubf;
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-typedef struct Display Display;
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-typedef struct Font Font;
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-typedef struct Fontchar Fontchar;
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-typedef struct Image Image;
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-typedef struct Mouse Mouse;
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-typedef struct Point Point;
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-typedef struct Rectangle Rectangle;
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-typedef struct RGB RGB;
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-typedef struct Screen Screen;
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-typedef struct Subfont Subfont;
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-
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-#pragma varargck type "R" Rectangle
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-#pragma varargck type "P" Point
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-extern int Rfmt(Fmt*);
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-extern int Pfmt(Fmt*);
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-
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-enum
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-{
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- DOpaque = 0xFFFFFFFF,
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- DTransparent = 0x00000000, /* only useful for allocimage, memfillcolor */
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- DBlack = 0x000000FF,
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- DWhite = 0xFFFFFFFF,
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- DRed = 0xFF0000FF,
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- DGreen = 0x00FF00FF,
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- DBlue = 0x0000FFFF,
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- DCyan = 0x00FFFFFF,
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- DMagenta = 0xFF00FFFF,
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- DYellow = 0xFFFF00FF,
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- DPaleyellow = 0xFFFFAAFF,
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- DDarkyellow = 0xEEEE9EFF,
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- DDarkgreen = 0x448844FF,
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- DPalegreen = 0xAAFFAAFF,
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- DMedgreen = 0x88CC88FF,
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- DDarkblue = 0x000055FF,
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- DPalebluegreen= 0xAAFFFFFF,
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- DPaleblue = 0x0000BBFF,
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- DBluegreen = 0x008888FF,
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- DGreygreen = 0x55AAAAFF,
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- DPalegreygreen = 0x9EEEEEFF,
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- DYellowgreen = 0x99994CFF,
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- DMedblue = 0x000099FF,
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- DGreyblue = 0x005DBBFF,
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- DPalegreyblue = 0x4993DDFF,
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- DPurpleblue = 0x8888CCFF,
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-
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- DNotacolor = 0xFFFFFF00,
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- DNofill = DNotacolor,
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-
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-};
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-
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-enum
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-{
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- Displaybufsize = 8000,
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- ICOSSCALE = 1024,
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- Borderwidth = 4,
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-};
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-
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-enum
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-{
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- /* refresh methods */
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- Refbackup = 0,
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- Refnone = 1,
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- Refmesg = 2
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-};
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-#define NOREFRESH ((void*)-1)
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-
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-enum
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-{
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- /* line ends */
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- Endsquare = 0,
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- Enddisc = 1,
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- Endarrow = 2,
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- Endmask = 0x1F
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-};
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-
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-#define ARROW(a, b, c) (Endarrow|((a)<<5)|((b)<<14)|((c)<<23))
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-
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-typedef enum
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-{
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- /* Porter-Duff compositing operators */
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- Clear = 0,
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-
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- SinD = 8,
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- DinS = 4,
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- SoutD = 2,
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- DoutS = 1,
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-
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- S = SinD|SoutD,
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- SoverD = SinD|SoutD|DoutS,
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- SatopD = SinD|DoutS,
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- SxorD = SoutD|DoutS,
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-
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- D = DinS|DoutS,
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- DoverS = DinS|DoutS|SoutD,
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- DatopS = DinS|SoutD,
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- DxorS = DoutS|SoutD, /* == SxorD */
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-
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- Ncomp = 12,
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-} Drawop;
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-
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-/*
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- * image channel descriptors
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- */
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-enum {
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- CRed = 0,
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- CGreen,
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- CBlue,
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- CGrey,
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- CAlpha,
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- CMap,
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- CIgnore,
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- NChan,
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-};
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-
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-#define __DC(type, nbits) ((((type)&15)<<4)|((nbits)&15))
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-#define CHAN1(a,b) __DC(a,b)
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-#define CHAN2(a,b,c,d) (CHAN1((a),(b))<<8|__DC((c),(d)))
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-#define CHAN3(a,b,c,d,e,f) (CHAN2((a),(b),(c),(d))<<8|__DC((e),(f)))
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-#define CHAN4(a,b,c,d,e,f,g,h) (CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h)))
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-
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-#define NBITS(c) ((c)&15)
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-#define TYPE(c) (((c)>>4)&15)
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-
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-enum {
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- GREY1 = CHAN1(CGrey, 1),
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- GREY2 = CHAN1(CGrey, 2),
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- GREY4 = CHAN1(CGrey, 4),
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- GREY8 = CHAN1(CGrey, 8),
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- CMAP8 = CHAN1(CMap, 8),
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- RGB15 = CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5),
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- RGB16 = CHAN3(CRed, 5, CGreen, 6, CBlue, 5),
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- RGB24 = CHAN3(CRed, 8, CGreen, 8, CBlue, 8),
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- RGBA32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8),
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- ARGB32 = CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8), /* stupid VGAs */
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- XRGB32 = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8),
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- BGR24 = CHAN3(CBlue, 8, CGreen, 8, CRed, 8),
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- ABGR32 = CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8),
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- XBGR32 = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8),
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-};
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-
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-extern char* chantostr(char*, uint32_t);
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-extern uint32_t strtochan(char*);
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-extern int chantodepth(uint32_t);
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-
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-struct Point
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-{
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- int x;
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- int y;
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-};
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-
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-struct Rectangle
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-{
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- Point min;
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- Point max;
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-};
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-
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-typedef void (*Reffn)(Image*, Rectangle, void*);
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-
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-struct Screen
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-{
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- Display *display; /* display holding data */
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- int id; /* id of system-held Screen */
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- Image *image; /* unused; for reference only */
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- Image *fill; /* color to paint behind windows */
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-};
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-
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-struct Display
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-{
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- QLock qlock;
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- int locking; /*program is using lockdisplay */
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- int dirno;
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- int fd;
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- int reffd;
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- int ctlfd;
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- int imageid;
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- int local;
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- void (*error)(Display*, char*);
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- char *devdir;
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- char *windir;
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- char oldlabel[64];
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- uint32_t dataqid;
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- Image *white;
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- Image *black;
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- Image *opaque;
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- Image *transparent;
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- Image *image;
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- uint8_t *buf;
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- int bufsize;
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- uint8_t *bufp;
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- Font *defaultfont;
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- Subfont *defaultsubfont;
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- Image *windows;
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- Image *screenimage;
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- int _isnewdisplay;
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-};
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-
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-struct Image
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-{
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- Display *display; /* display holding data */
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- int id; /* id of system-held Image */
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- Rectangle r; /* rectangle in data area, local coords */
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- Rectangle clipr; /* clipping region */
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- int depth; /* number of bits per pixel */
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- uint32_t chan;
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- int repl; /* flag: data replicates to tile clipr */
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- Screen *screen; /* 0 if not a window */
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- Image *next; /* next in list of windows */
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-};
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-
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-struct RGB
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-{
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- uint32_t red;
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- uint32_t green;
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- uint32_t blue;
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-};
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-
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-/*
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- * Subfonts
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- *
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- * given char c, Subfont *f, Fontchar *i, and Point p, one says
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- * i = f->info+c;
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- * draw(b, Rect(p.x+i->left, p.y+i->top,
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- * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
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- * color, f->bits, Pt(i->x, i->top));
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- * p.x += i->width;
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- * to draw characters in the specified color (itself an Image) in Image b.
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- */
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-
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-struct Fontchar
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-{
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- int x; /* left edge of bits */
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- uint8_t top; /* first non-zero scan-line */
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- uint8_t bottom; /* last non-zero scan-line + 1 */
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- char left; /* offset of baseline */
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- uint8_t width; /* width of baseline */
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-};
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-
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-struct Subfont
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-{
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- char *name;
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- int16_t n; /* number of chars in font */
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- uint8_t height; /* height of image */
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- char ascent; /* top of image to baseline */
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- Fontchar *info; /* n+1 character descriptors */
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- Image *bits; /* of font */
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- int ref;
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-};
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-
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-enum
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-{
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- /* starting values */
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- LOG2NFCACHE = 6,
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- NFCACHE = (1<<LOG2NFCACHE), /* #chars cached */
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- NFLOOK = 5, /* #chars to scan in cache */
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- NFSUBF = 2, /* #subfonts to cache */
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- /* max value */
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- MAXFCACHE = 1024+NFLOOK, /* upper limit */
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- MAXSUBF = 50, /* generous upper limit */
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- /* deltas */
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- DSUBF = 4,
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- /* expiry ages */
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- SUBFAGE = 10000,
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- CACHEAGE = 10000
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-};
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-
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-struct Cachefont
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-{
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- Rune min; /* lowest rune value to be taken from subfont */
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- Rune max; /* highest rune value+1 to be taken from subfont */
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- int offset; /* position in subfont of character at min */
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- char *name; /* stored in font */
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- char *subfontname; /* to access subfont */
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-};
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-
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-struct Cacheinfo
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-{
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- uint16_t x; /* left edge of bits */
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- uint8_t width; /* width of baseline */
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- schar left; /* offset of baseline */
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- Rune value; /* value of character at this slot in cache */
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- uint16_t age;
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-};
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-
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-struct Cachesubf
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-{
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- uint32_t age; /* for replacement */
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- Cachefont *cf; /* font info that owns us */
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- Subfont *f; /* attached subfont */
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-};
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-
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-struct Font
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-{
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- char *name;
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- Display *display;
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- int16_t height; /* max height of image, interline spacing */
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- int16_t ascent; /* top of image to baseline */
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- int16_t width; /* widest so far; used in caching only */
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- int16_t nsub; /* number of subfonts */
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- uint32_t age; /* increasing counter; used for LRU */
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- int maxdepth; /* maximum depth of all loaded subfonts */
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- int ncache; /* size of cache */
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- int nsubf; /* size of subfont list */
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- Cacheinfo *cache;
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- Cachesubf *subf;
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- Cachefont **sub; /* as read from file */
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- Image *cacheimage;
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-};
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-
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-#define Dx(r) ((r).max.x-(r).min.x)
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-#define Dy(r) ((r).max.y-(r).min.y)
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-
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-#ifdef __cplusplus
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-extern "C" {
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-#endif
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-
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-/*
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- * Image management
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- */
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-extern Image* _allocimage(Image*, Display*, Rectangle, uint32_t, int,
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- uint32_t, int, int);
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-extern Image* allocimage(Display*, Rectangle, uint32_t, int,
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- uint32_t);
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-extern uint8_t* bufimage(Display*, int);
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-extern int bytesperline(Rectangle, int);
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-extern void closedisplay(Display*);
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-extern void drawerror(Display*, char*);
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-extern int flushimage(Display*, int);
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-extern int freeimage(Image*);
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-extern int _freeimage1(Image*);
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-extern int geninitdraw(char*, void(*)(Display*, char*), char*,
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- char*, char*, int);
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-extern int initdraw(void(*)(Display*, char*), char*, char*);
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-extern int newwindow(char*);
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-extern Display* initdisplay(char*, char*,
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- void(*)(Display*, char*));
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-extern int loadimage(Image*, Rectangle, uint8_t*, int);
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-extern int cloadimage(Image*, Rectangle, uint8_t*, int);
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-extern int getwindow(Display*, int);
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-extern int gengetwindow(Display*, char*, Image**, Screen**, int);
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-extern Image* readimage(Display*, int, int);
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-extern Image* creadimage(Display*, int, int);
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-extern int unloadimage(Image*, Rectangle, uint8_t*, int);
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-extern int wordsperline(Rectangle, int);
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-extern int writeimage(int, Image*, int);
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-extern Image* namedimage(Display*, char*);
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-extern int nameimage(Image*, char*, int);
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-extern Image* allocimagemix(Display*, uint32_t, uint32_t);
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-
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-/*
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- * Colors
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- */
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-extern void readcolmap(Display*, RGB*);
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-extern void writecolmap(Display*, RGB*);
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-extern uint32_t setalpha(uint32_t, uint8_t);
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-
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-/*
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- * Windows
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- */
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-extern Screen* allocscreen(Image*, Image*, int);
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-extern Image* _allocwindow(Image*, Screen*, Rectangle, int, uint32_t);
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-extern Image* allocwindow(Screen*, Rectangle, int, uint32_t);
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-extern void bottomnwindows(Image**, int);
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-extern void bottomwindow(Image*);
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-extern int freescreen(Screen*);
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-extern Screen* publicscreen(Display*, int, uint32_t);
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-extern void topnwindows(Image**, int);
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-extern void topwindow(Image*);
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-extern int originwindow(Image*, Point, Point);
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-
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-/*
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- * Geometry
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- */
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-extern Point Pt(int, int);
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-extern Rectangle Rect(int, int, int, int);
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-extern Rectangle Rpt(Point, Point);
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-extern Point addpt(Point, Point);
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-extern Point subpt(Point, Point);
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-extern Point divpt(Point, int);
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-extern Point mulpt(Point, int);
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-extern int eqpt(Point, Point);
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-extern int eqrect(Rectangle, Rectangle);
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-extern Rectangle insetrect(Rectangle, int);
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-extern Rectangle rectaddpt(Rectangle, Point);
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-extern Rectangle rectsubpt(Rectangle, Point);
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-extern Rectangle canonrect(Rectangle);
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-extern int rectXrect(Rectangle, Rectangle);
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-extern int rectinrect(Rectangle, Rectangle);
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-extern void combinerect(Rectangle*, Rectangle);
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-extern int rectclip(Rectangle*, Rectangle);
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-extern int ptinrect(Point, Rectangle);
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-extern void replclipr(Image*, int, Rectangle);
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-extern int drawreplxy(int, int, int); /* used to be drawsetxy */
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-extern Point drawrepl(Rectangle, Point);
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-extern int rgb2cmap(int, int, int);
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-extern int cmap2rgb(int);
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-extern int cmap2rgba(int);
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-extern void icossin(int, int*, int*);
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-extern void icossin2(int, int, int*, int*);
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-
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-/*
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- * Graphics
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- */
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-extern void draw(Image*, Rectangle, Image*, Image*, Point);
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-extern void drawop(Image*, Rectangle, Image*, Image*, Point, Drawop);
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-extern void gendraw(Image*, Rectangle, Image*, Point, Image*, Point);
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-extern void gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop);
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-extern void line(Image*, Point, Point, int, int, int, Image*, Point);
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-extern void lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop);
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-extern void poly(Image*, Point*, int, int, int, int, Image*, Point);
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-extern void polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
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-extern void fillpoly(Image*, Point*, int, int, Image*, Point);
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-extern void fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop);
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-extern Point string(Image*, Point, Image*, Point, Font*, char*);
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-extern Point stringop(Image*, Point, Image*, Point, Font*, char*,
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- Drawop);
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-extern Point stringn(Image*, Point, Image*, Point, Font*, char*,
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- int);
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-extern Point stringnop(Image*, Point, Image*, Point, Font*, char*,
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- int, Drawop);
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-extern Point runestring(Image*, Point, Image*, Point, Font*, Rune*);
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-extern Point runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop);
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-extern Point runestringn(Image*, Point, Image*, Point, Font*, Rune*, int);
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-extern Point runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop);
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-extern Point stringbg(Image*, Point, Image*, Point, Font*, char*,
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- Image*, Point);
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-extern Point stringbgop(Image*, Point, Image*, Point, Font*, char*,
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- Image*, Point, Drawop);
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-extern Point stringnbg(Image*, Point, Image*, Point, Font*, char*,
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- int, Image*, Point);
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-extern Point stringnbgop(Image*, Point, Image*, Point, Font*, char*,
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- int, Image*, Point, Drawop);
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-extern Point runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point);
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-extern Point runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop);
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-extern Point runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point);
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-extern Point runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop);
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-extern Point _string(Image*, Point, Image*, Point, Font*, char*,
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- Rune*, int, Rectangle, Image*, Point, Drawop);
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-extern Point stringsubfont(Image*, Point, Image*, Subfont*, char*);
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-extern int bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point);
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-extern int bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop);
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-extern int bezspline(Image*, Point*, int, int, int, int, Image*, Point);
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-extern int bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
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-extern int bezsplinepts(Point*, int, Point**);
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-extern int fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point);
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-extern int fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop);
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-extern int fillbezspline(Image*, Point*, int, int, Image*, Point);
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-extern int fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop);
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-extern void ellipse(Image*, Point, int, int, int, Image*, Point);
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-extern void ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop);
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-extern void fillellipse(Image*, Point, int, int, Image*, Point);
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-extern void fillellipseop(Image*, Point, int, int, Image*, Point, Drawop);
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-extern void arc(Image*, Point, int, int, int, Image*, Point, int, int);
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-extern void arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop);
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-extern void fillarc(Image*, Point, int, int, Image*, Point, int, int);
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-extern void fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop);
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-extern void border(Image*, Rectangle, int, Image*, Point);
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-extern void borderop(Image*, Rectangle, int, Image*, Point, Drawop);
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-
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-/*
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|
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- * Font management
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|
- */
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-extern Font* openfont(Display*, char*);
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-extern Font* buildfont(Display*, char*, char*);
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-extern void freefont(Font*);
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-extern Font* mkfont(Subfont*, Rune);
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|
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-extern int cachechars(Font*, char**, Rune**, uint16_t*, int,
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- int*,
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|
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- char**);
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-extern void agefont(Font*);
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|
|
-extern Subfont* allocsubfont(char*, int, int, int, Fontchar*,
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|
|
- Image*);
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|
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-extern Subfont* lookupsubfont(Display*, char*);
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|
|
-extern void installsubfont(char*, Subfont*);
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|
|
-extern void uninstallsubfont(Subfont*);
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|
|
-extern void freesubfont(Subfont*);
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|
|
-extern Subfont* readsubfont(Display*, char*, int, int);
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|
-extern Subfont* readsubfonti(Display*, char*, int, Image*, int);
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|
|
-extern int writesubfont(int, Subfont*);
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|
|
-extern void _unpackinfo(Fontchar*, uint8_t*, int);
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|
|
-extern Point stringsize(Font*, char*);
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|
|
-extern int stringwidth(Font*, char*);
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|
|
-extern int stringnwidth(Font*, char*, int);
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|
|
-extern Point runestringsize(Font*, Rune*);
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|
|
-extern int runestringwidth(Font*, Rune*);
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|
|
-extern int runestringnwidth(Font*, Rune*, int);
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|
|
-extern Point strsubfontwidth(Subfont*, char*);
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|
|
-extern int loadchar(Font*, Rune, Cacheinfo*, int, int, char**);
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|
|
-extern char* subfontname(char*, char*, int);
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|
|
-extern Subfont* _getsubfont(Display*, char*);
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|
|
-extern Subfont* getdefont(Display*);
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|
|
-extern void lockdisplay(Display*);
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|
|
-extern void unlockdisplay(Display*);
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|
|
-extern int drawlsetrefresh(uint32_t, int, void*, void*);
|
|
|
-
|
|
|
-/*
|
|
|
- * Predefined
|
|
|
- */
|
|
|
-extern uint8_t defontdata[];
|
|
|
-extern int sizeofdefont;
|
|
|
-extern Point ZP;
|
|
|
-extern Rectangle ZR;
|
|
|
-
|
|
|
-/*
|
|
|
- * Set up by initdraw()
|
|
|
- */
|
|
|
-extern Display *display;
|
|
|
-extern Font *font;
|
|
|
-extern Image *screen;
|
|
|
-extern Screen *_screen;
|
|
|
-extern int _cursorfd;
|
|
|
-extern int _drawdebug; /* set to 1 to see errors from flushimage */
|
|
|
-extern void _setdrawop(Display*, Drawop);
|
|
|
-
|
|
|
-#define BGSHORT(p) (((p)[0]<<0) | ((p)[1]<<8))
|
|
|
-#define BGLONG(p) ((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
|
|
|
-#define BPSHORT(p, v) ((p)[0]=(v), (p)[1]=((v)>>8))
|
|
|
-#define BPLONG(p, v) (BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
|
|
|
-
|
|
|
-/*
|
|
|
- * Compressed image file parameters and helper routines
|
|
|
- */
|
|
|
-#define NMATCH 3 /* shortest match possible */
|
|
|
-#define NRUN (NMATCH+31) /* longest match possible */
|
|
|
-#define NMEM 1024 /* window size */
|
|
|
-#define NDUMP 128 /* maximum length of dump */
|
|
|
-#define NCBLOCK 6000 /* size of compressed blocks */
|
|
|
-extern void _twiddlecompressed(uint8_t*, int);
|
|
|
-extern int _compblocksize(Rectangle, int);
|
|
|
-
|
|
|
-/* XXX backwards helps; should go */
|
|
|
-extern uint32_t drawld2chan[];
|
|
|
-extern void drawsetdebug(int);
|
|
|
-
|
|
|
-#ifdef __cplusplus
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#endif
|