1 76193d7c 2003-09-30 devnull typedef struct	Memimage Memimage;
  2 76193d7c 2003-09-30 devnull typedef struct	Memdata Memdata;
  3 76193d7c 2003-09-30 devnull typedef struct	Memsubfont Memsubfont;
  4 76193d7c 2003-09-30 devnull typedef struct	Memlayer Memlayer;
  5 76193d7c 2003-09-30 devnull typedef struct	Memcmap Memcmap;
  6 76193d7c 2003-09-30 devnull typedef struct	Memdrawparam	Memdrawparam;
  7 76193d7c 2003-09-30 devnull 
  8 76193d7c 2003-09-30 devnull /*
  9 76193d7c 2003-09-30 devnull  * Memdata is allocated from main pool, but .data from the image pool.
 10 76193d7c 2003-09-30 devnull  * Memdata is allocated separately to permit patching its pointer after
 11 76193d7c 2003-09-30 devnull  * compaction when windows share the image data.
 12 76193d7c 2003-09-30 devnull  * The first word of data is a back pointer to the Memdata, to find
 13 76193d7c 2003-09-30 devnull  * The word to patch.
 14 76193d7c 2003-09-30 devnull  */
 15 76193d7c 2003-09-30 devnull 
 16 76193d7c 2003-09-30 devnull struct Memdata
 17 76193d7c 2003-09-30 devnull {
 18 76193d7c 2003-09-30 devnull 	u32int	*base;	/* allocated data pointer */
 19 76193d7c 2003-09-30 devnull 	uchar	*bdata;	/* pointer to first byte of actual data; word-aligned */
 20 76193d7c 2003-09-30 devnull 	int	ref;	/* number of Memimages using this data */
 21 76193d7c 2003-09-30 devnull 	void*	imref;
 22 76193d7c 2003-09-30 devnull 	int	allocd;	/* is this malloc'd? */
 23 76193d7c 2003-09-30 devnull };
 24 76193d7c 2003-09-30 devnull 
 25 76193d7c 2003-09-30 devnull enum {
 26 76193d7c 2003-09-30 devnull 	Frepl	= 1<<0,	/* is replicated */
 27 76193d7c 2003-09-30 devnull 	Fsimple	= 1<<1,	/* is 1x1 */
 28 76193d7c 2003-09-30 devnull 	Fgrey	= 1<<2,	/* is grey */
 29 76193d7c 2003-09-30 devnull 	Falpha	= 1<<3,	/* has explicit alpha */
 30 76193d7c 2003-09-30 devnull 	Fcmap	= 1<<4,	/* has cmap channel */
 31 76193d7c 2003-09-30 devnull 	Fbytes	= 1<<5,	/* has only 8-bit channels */
 32 76193d7c 2003-09-30 devnull };
 33 76193d7c 2003-09-30 devnull 
 34 76193d7c 2003-09-30 devnull struct Memimage
 35 76193d7c 2003-09-30 devnull {
 36 76193d7c 2003-09-30 devnull 	Rectangle	r;	/* rectangle in data area, local coords */
 37 76193d7c 2003-09-30 devnull 	Rectangle	clipr;	/* clipping region */
 38 76193d7c 2003-09-30 devnull 	int		depth;	/* number of bits of storage per pixel */
 39 76193d7c 2003-09-30 devnull 	int		nchan;	/* number of channels */
 40 76193d7c 2003-09-30 devnull 	u32int		chan;	/* channel descriptions */
 41 76193d7c 2003-09-30 devnull 	Memcmap		*cmap;
 42 76193d7c 2003-09-30 devnull 
 43 76193d7c 2003-09-30 devnull 	Memdata		*data;	/* pointer to data; shared by windows in this image */
 44 76193d7c 2003-09-30 devnull 	int		zero;	/* data->bdata+zero==&byte containing (0,0) */
 45 76193d7c 2003-09-30 devnull 	u32int		width;	/* width in words of a single scan line */
 46 76193d7c 2003-09-30 devnull 	Memlayer	*layer;	/* nil if not a layer*/
 47 76193d7c 2003-09-30 devnull 	u32int		flags;
 48 76193d7c 2003-09-30 devnull 	void		*X;
 49 76193d7c 2003-09-30 devnull 
 50 76193d7c 2003-09-30 devnull 	int		shift[NChan];
 51 76193d7c 2003-09-30 devnull 	int		mask[NChan];
 52 76193d7c 2003-09-30 devnull 	int		nbits[NChan];
 53 76193d7c 2003-09-30 devnull };
 54 76193d7c 2003-09-30 devnull 
 55 76193d7c 2003-09-30 devnull struct Memcmap
 56 76193d7c 2003-09-30 devnull {
 57 76193d7c 2003-09-30 devnull 	uchar	cmap2rgb[3*256];
 58 76193d7c 2003-09-30 devnull 	uchar	rgb2cmap[16*16*16];
 59 76193d7c 2003-09-30 devnull };
 60 76193d7c 2003-09-30 devnull 
 61 76193d7c 2003-09-30 devnull /*
 62 76193d7c 2003-09-30 devnull  * Subfonts
 63 76193d7c 2003-09-30 devnull  *
 64 76193d7c 2003-09-30 devnull  * given char c, Subfont *f, Fontchar *i, and Point p, one says
 65 76193d7c 2003-09-30 devnull  *	i = f->info+c;
 66 76193d7c 2003-09-30 devnull  *	draw(b, Rect(p.x+i->left, p.y+i->top,
 67 76193d7c 2003-09-30 devnull  *		p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
 68 76193d7c 2003-09-30 devnull  *		color, f->bits, Pt(i->x, i->top));
 69 76193d7c 2003-09-30 devnull  *	p.x += i->width;
 70 76193d7c 2003-09-30 devnull  * to draw characters in the specified color (itself a Memimage) in Memimage b.
 71 76193d7c 2003-09-30 devnull  */
 72 76193d7c 2003-09-30 devnull 
 73 76193d7c 2003-09-30 devnull struct	Memsubfont
 74 76193d7c 2003-09-30 devnull {
 75 76193d7c 2003-09-30 devnull 	char		*name;
 76 76193d7c 2003-09-30 devnull 	short		n;		/* number of chars in font */
 77 76193d7c 2003-09-30 devnull 	uchar		height;		/* height of bitmap */
 78 76193d7c 2003-09-30 devnull 	char		ascent;		/* top of bitmap to baseline */
 79 76193d7c 2003-09-30 devnull 	Fontchar	*info;		/* n+1 character descriptors */
 80 76193d7c 2003-09-30 devnull 	Memimage	*bits;		/* of font */
 81 76193d7c 2003-09-30 devnull };
 82 76193d7c 2003-09-30 devnull 
 83 76193d7c 2003-09-30 devnull /*
 84 76193d7c 2003-09-30 devnull  * Encapsulated parameters and information for sub-draw routines.
 85 76193d7c 2003-09-30 devnull  */
 86 76193d7c 2003-09-30 devnull enum {
 87 76193d7c 2003-09-30 devnull 	Simplesrc=1<<0,
 88 76193d7c 2003-09-30 devnull 	Simplemask=1<<1,
 89 76193d7c 2003-09-30 devnull 	Replsrc=1<<2,
 90 76193d7c 2003-09-30 devnull 	Replmask=1<<3,
 91 76193d7c 2003-09-30 devnull 	Fullmask=1<<4,
 92 76193d7c 2003-09-30 devnull };
 93 76193d7c 2003-09-30 devnull struct	Memdrawparam
 94 76193d7c 2003-09-30 devnull {
 95 76193d7c 2003-09-30 devnull 	Memimage *dst;
 96 76193d7c 2003-09-30 devnull 	Rectangle	r;
 97 76193d7c 2003-09-30 devnull 	Memimage *src;
 98 76193d7c 2003-09-30 devnull 	Rectangle sr;
 99 76193d7c 2003-09-30 devnull 	Memimage *mask;
100 76193d7c 2003-09-30 devnull 	Rectangle mr;
101 76193d7c 2003-09-30 devnull 	int op;
102 76193d7c 2003-09-30 devnull 
103 76193d7c 2003-09-30 devnull 	u32int state;
104 76193d7c 2003-09-30 devnull 	u32int mval;	/* if Simplemask, the mask pixel in mask format */
105 76193d7c 2003-09-30 devnull 	u32int mrgba;	/* mval in rgba */
106 76193d7c 2003-09-30 devnull 	u32int sval;	/* if Simplesrc, the source pixel in src format */
107 76193d7c 2003-09-30 devnull 	u32int srgba;	/* sval in rgba */
108 76193d7c 2003-09-30 devnull 	u32int sdval;	/* sval in dst format */
109 76193d7c 2003-09-30 devnull };
110 76193d7c 2003-09-30 devnull 
111 76193d7c 2003-09-30 devnull /*
112 76193d7c 2003-09-30 devnull  * Memimage management
113 76193d7c 2003-09-30 devnull  */
114 76193d7c 2003-09-30 devnull 
115 76193d7c 2003-09-30 devnull extern Memimage*	allocmemimage(Rectangle, u32int);
116 76193d7c 2003-09-30 devnull extern Memimage*	allocmemimaged(Rectangle, u32int, Memdata*, void*);
117 76193d7c 2003-09-30 devnull extern Memimage*	readmemimage(int);
118 76193d7c 2003-09-30 devnull extern Memimage*	creadmemimage(int);
119 76193d7c 2003-09-30 devnull extern int		writememimage(int, Memimage*);
120 76193d7c 2003-09-30 devnull extern void		freememimage(Memimage*);
121 76193d7c 2003-09-30 devnull extern int		loadmemimage(Memimage*, Rectangle, uchar*, int);
122 76193d7c 2003-09-30 devnull extern int		cloadmemimage(Memimage*, Rectangle, uchar*, int);
123 76193d7c 2003-09-30 devnull extern int		unloadmemimage(Memimage*, Rectangle, uchar*, int);
124 76193d7c 2003-09-30 devnull extern u32int*		wordaddr(Memimage*, Point);
125 76193d7c 2003-09-30 devnull extern uchar*		byteaddr(Memimage*, Point);
126 76193d7c 2003-09-30 devnull extern int		drawclip(Memimage*, Rectangle*, Memimage*, Point*,
127 76193d7c 2003-09-30 devnull 				Memimage*, Point*, Rectangle*, Rectangle*);
128 76193d7c 2003-09-30 devnull extern void		memfillcolor(Memimage*, u32int);
129 76193d7c 2003-09-30 devnull extern int		memsetchan(Memimage*, u32int);
130 76193d7c 2003-09-30 devnull extern u32int		pixelbits(Memimage*, Point);
131 76193d7c 2003-09-30 devnull 
132 76193d7c 2003-09-30 devnull /*
133 76193d7c 2003-09-30 devnull  * Graphics
134 76193d7c 2003-09-30 devnull  */
135 76193d7c 2003-09-30 devnull extern void	memdraw(Memimage*, Rectangle, Memimage*, Point, 
136 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
137 76193d7c 2003-09-30 devnull extern void	memline(Memimage*, Point, Point, int, int, int,
138 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
139 76193d7c 2003-09-30 devnull extern void	mempoly(Memimage*, Point*, int, int, int, int,
140 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
141 76193d7c 2003-09-30 devnull extern void	memfillpoly(Memimage*, Point*, int, int,
142 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
143 76193d7c 2003-09-30 devnull extern void	_memfillpolysc(Memimage*, Point*, int, int,
144 76193d7c 2003-09-30 devnull 			Memimage*, Point, int, int, int, int);
145 76193d7c 2003-09-30 devnull extern void	memimagedraw(Memimage*, Rectangle, Memimage*, Point,
146 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
147 76193d7c 2003-09-30 devnull extern int	hwdraw(Memdrawparam*);
148 76193d7c 2003-09-30 devnull extern void	memimageline(Memimage*, Point, Point, int, int, int,
149 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
150 76193d7c 2003-09-30 devnull extern void	_memimageline(Memimage*, Point, Point, int, int, int,
151 76193d7c 2003-09-30 devnull 			Memimage*, Point, Rectangle, int);
152 76193d7c 2003-09-30 devnull extern Point	memimagestring(Memimage*, Point, Memimage*, Point,
153 76193d7c 2003-09-30 devnull 			Memsubfont*, char*);
154 76193d7c 2003-09-30 devnull extern void	memellipse(Memimage*, Point, int, int, int,
155 76193d7c 2003-09-30 devnull 			Memimage*, Point, int);
156 76193d7c 2003-09-30 devnull extern void	memarc(Memimage*, Point, int, int, int, Memimage*,
157 76193d7c 2003-09-30 devnull 			Point, int, int, int);
158 76193d7c 2003-09-30 devnull extern Rectangle memlinebbox(Point, Point, int, int, int);
159 76193d7c 2003-09-30 devnull extern int	memlineendsize(int);
160 76193d7c 2003-09-30 devnull extern void	_memmkcmap(void);
161 76193d7c 2003-09-30 devnull extern void	memimageinit(void);
162 76193d7c 2003-09-30 devnull 
163 76193d7c 2003-09-30 devnull /*
164 76193d7c 2003-09-30 devnull  * Subfont management
165 76193d7c 2003-09-30 devnull  */
166 76193d7c 2003-09-30 devnull extern Memsubfont*	allocmemsubfont(char*, int, int, int, Fontchar*, Memimage*);
167 76193d7c 2003-09-30 devnull extern Memsubfont*	openmemsubfont(char*);
168 76193d7c 2003-09-30 devnull extern void		freememsubfont(Memsubfont*);
169 76193d7c 2003-09-30 devnull extern Point		memsubfontwidth(Memsubfont*, char*);
170 76193d7c 2003-09-30 devnull extern Memsubfont*	getmemdefont(void);
171 76193d7c 2003-09-30 devnull 
172 76193d7c 2003-09-30 devnull /*
173 76193d7c 2003-09-30 devnull  * Predefined 
174 76193d7c 2003-09-30 devnull  */
175 76193d7c 2003-09-30 devnull extern	Memimage*	memwhite;
176 76193d7c 2003-09-30 devnull extern	Memimage*	memblack;
177 76193d7c 2003-09-30 devnull extern	Memimage*	memopaque;
178 76193d7c 2003-09-30 devnull extern	Memimage*	memtransparent;
179 76193d7c 2003-09-30 devnull extern	Memcmap*	memdefcmap;
180 76193d7c 2003-09-30 devnull 
181 76193d7c 2003-09-30 devnull /*
182 76193d7c 2003-09-30 devnull  * Kernel interface
183 76193d7c 2003-09-30 devnull  */
184 76193d7c 2003-09-30 devnull void			memimagemove(void*, void*);
185 76193d7c 2003-09-30 devnull 
186 76193d7c 2003-09-30 devnull /*
187 76193d7c 2003-09-30 devnull  * Kernel cruft
188 76193d7c 2003-09-30 devnull  */
189 76193d7c 2003-09-30 devnull extern void		rdb(void);
190 76193d7c 2003-09-30 devnull extern int		iprint(char*, ...);
191 76193d7c 2003-09-30 devnull extern int		drawdebug;
192 76193d7c 2003-09-30 devnull 
193 76193d7c 2003-09-30 devnull /*
194 76193d7c 2003-09-30 devnull  * For other implementations, like x11.
195 76193d7c 2003-09-30 devnull  */
196 76193d7c 2003-09-30 devnull extern void		_memfillcolor(Memimage*, u32int);
197 76193d7c 2003-09-30 devnull extern Memimage*	_allocmemimage(Rectangle, u32int);
198 76193d7c 2003-09-30 devnull extern int		_cloadmemimage(Memimage*, Rectangle, uchar*, int);
199 76193d7c 2003-09-30 devnull extern int		_loadmemimage(Memimage*, Rectangle, uchar*, int);
200 76193d7c 2003-09-30 devnull extern void		_freememimage(Memimage*);
201 76193d7c 2003-09-30 devnull extern u32int		_rgbatoimg(Memimage*, u32int);
202 76193d7c 2003-09-30 devnull extern u32int		_imgtorgba(Memimage*, u32int);
203 76193d7c 2003-09-30 devnull extern u32int		_pixelbits(Memimage*, Point);
204 76193d7c 2003-09-30 devnull extern int		_unloadmemimage(Memimage*, Rectangle, uchar*, int);
205 76193d7c 2003-09-30 devnull extern Memdrawparam*	_memimagedrawsetup(Memimage*,
206 76193d7c 2003-09-30 devnull 				Rectangle, Memimage*, Point, Memimage*,
207 76193d7c 2003-09-30 devnull 				Point, int);
208 76193d7c 2003-09-30 devnull extern void		_memimagedraw(Memdrawparam*);
209 76193d7c 2003-09-30 devnull extern void		_drawreplacescreenimage(Memimage*);