1 typedef struct Memimage Memimage;
2 typedef struct Memdata Memdata;
3 typedef struct Memsubfont Memsubfont;
4 typedef struct Memlayer Memlayer;
5 typedef struct Memcmap Memcmap;
6 typedef struct Memdrawparam Memdrawparam;
9 * Memdata is allocated from main pool, but .data from the image pool.
10 * Memdata is allocated separately to permit patching its pointer after
11 * compaction when windows share the image data.
12 * The first word of data is a back pointer to the Memdata, to find
18 u32int *base; /* allocated data pointer */
19 uchar *bdata; /* pointer to first byte of actual data; word-aligned */
20 int ref; /* number of Memimages using this data */
22 int allocd; /* is this malloc'd? */
26 Frepl = 1<<0, /* is replicated */
27 Fsimple = 1<<1, /* is 1x1 */
28 Fgrey = 1<<2, /* is grey */
29 Falpha = 1<<3, /* has explicit alpha */
30 Fcmap = 1<<4, /* has cmap channel */
31 Fbytes = 1<<5, /* has only 8-bit channels */
36 Rectangle r; /* rectangle in data area, local coords */
37 Rectangle clipr; /* clipping region */
38 int depth; /* number of bits of storage per pixel */
39 int nchan; /* number of channels */
40 u32int chan; /* channel descriptions */
43 Memdata *data; /* pointer to data; shared by windows in this image */
44 int zero; /* data->bdata+zero==&byte containing (0,0) */
45 u32int width; /* width in words of a single scan line */
46 Memlayer *layer; /* nil if not a layer*/
49 int screenref; /* reference count if this is a screen */
58 uchar cmap2rgb[3*256];
59 uchar rgb2cmap[16*16*16];
65 * given char c, Subfont *f, Fontchar *i, and Point p, one says
67 * draw(b, Rect(p.x+i->left, p.y+i->top,
68 * p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
69 * color, f->bits, Pt(i->x, i->top));
71 * to draw characters in the specified color (itself a Memimage) in Memimage b.
77 short n; /* number of chars in font */
78 uchar height; /* height of bitmap */
79 char ascent; /* top of bitmap to baseline */
80 Fontchar *info; /* n+1 character descriptors */
81 Memimage *bits; /* of font */
85 * Encapsulated parameters and information for sub-draw routines.
105 u32int mval; /* if Simplemask, the mask pixel in mask format */
106 u32int mrgba; /* mval in rgba */
107 u32int sval; /* if Simplesrc, the source pixel in src format */
108 u32int srgba; /* sval in rgba */
109 u32int sdval; /* sval in dst format */
113 * Memimage management
116 extern Memimage* allocmemimage(Rectangle, u32int);
117 extern Memimage* allocmemimaged(Rectangle, u32int, Memdata*, void*);
118 extern Memimage* readmemimage(int);
119 extern Memimage* creadmemimage(int);
120 extern int writememimage(int, Memimage*);
121 extern void freememimage(Memimage*);
122 extern int loadmemimage(Memimage*, Rectangle, uchar*, int);
123 extern int cloadmemimage(Memimage*, Rectangle, uchar*, int);
124 extern int unloadmemimage(Memimage*, Rectangle, uchar*, int);
125 extern u32int* wordaddr(Memimage*, Point);
126 extern uchar* byteaddr(Memimage*, Point);
127 extern int drawclip(Memimage*, Rectangle*, Memimage*, Point*,
128 Memimage*, Point*, Rectangle*, Rectangle*);
129 extern void memfillcolor(Memimage*, u32int);
130 extern int memsetchan(Memimage*, u32int);
131 extern u32int pixelbits(Memimage*, Point);
136 extern void memdraw(Memimage*, Rectangle, Memimage*, Point,
137 Memimage*, Point, int);
138 extern void memline(Memimage*, Point, Point, int, int, int,
139 Memimage*, Point, int);
140 extern void mempoly(Memimage*, Point*, int, int, int, int,
141 Memimage*, Point, int);
142 extern void memfillpoly(Memimage*, Point*, int, int,
143 Memimage*, Point, int);
144 extern void _memfillpolysc(Memimage*, Point*, int, int,
145 Memimage*, Point, int, int, int, int);
146 extern void memimagedraw(Memimage*, Rectangle, Memimage*, Point,
147 Memimage*, Point, int);
148 extern int hwdraw(Memdrawparam*);
149 extern void memimageline(Memimage*, Point, Point, int, int, int,
150 Memimage*, Point, int);
151 extern void _memimageline(Memimage*, Point, Point, int, int, int,
152 Memimage*, Point, Rectangle, int);
153 extern Point memimagestring(Memimage*, Point, Memimage*, Point,
155 extern void memellipse(Memimage*, Point, int, int, int,
156 Memimage*, Point, int);
157 extern void memarc(Memimage*, Point, int, int, int, Memimage*,
158 Point, int, int, int);
159 extern Rectangle memlinebbox(Point, Point, int, int, int);
160 extern int memlineendsize(int);
161 extern void _memmkcmap(void);
162 extern void memimageinit(void);
167 extern Memsubfont* allocmemsubfont(char*, int, int, int, Fontchar*, Memimage*);
168 extern Memsubfont* openmemsubfont(char*);
169 extern void freememsubfont(Memsubfont*);
170 extern Point memsubfontwidth(Memsubfont*, char*);
171 extern Memsubfont* getmemdefont(void);
176 extern Memimage* memwhite;
177 extern Memimage* memblack;
178 extern Memimage* memopaque;
179 extern Memimage* memtransparent;
180 extern Memcmap* memdefcmap;
185 void memimagemove(void*, void*);
190 extern void rdb(void);
191 extern int iprint(char*, ...);
192 extern int drawdebug;
195 * For other implementations, like x11.
197 extern void _memfillcolor(Memimage*, u32int);
198 extern Memimage* _allocmemimage(Rectangle, u32int);
199 extern int _cloadmemimage(Memimage*, Rectangle, uchar*, int);
200 extern int _loadmemimage(Memimage*, Rectangle, uchar*, int);
201 extern void _freememimage(Memimage*);
202 extern u32int _rgbatoimg(Memimage*, u32int);
203 extern u32int _imgtorgba(Memimage*, u32int);
204 extern u32int _pixelbits(Memimage*, Point);
205 extern int _unloadmemimage(Memimage*, Rectangle, uchar*, int);
206 extern Memdrawparam* _memimagedrawsetup(Memimage*,
207 Rectangle, Memimage*, Point, Memimage*,
209 extern void _memimagedraw(Memdrawparam*);
210 extern void _drawreplacescreenimage(Memimage*);