devdraw: move Client into devdraw.h and move global state in

src/cmd/devdraw/devdraw.h

@@ -1,10 +1,167 @@
-int _drawmsgread(void*, int);
-int _drawmsgwrite(void*, int);
-void _initdisplaymemimage(Memimage*);
+
+#define NHASH (1<<5)
+#define HASHMASK (NHASH-1)
+
+typedef struct Kbdbuf Kbdbuf;
+typedef struct Mousebuf Mousebuf;
+typedef struct Tagbuf Tagbuf;
+
+typedef struct Client Client;
+typedef struct Draw Draw;
+typedef struct DImage DImage;
+typedef struct DScreen DScreen;
+typedef struct CScreen CScreen;
+typedef struct FChar FChar;
+typedef struct Refresh Refresh;
+typedef struct Refx Refx;
+typedef struct DName DName;
+
+struct Draw
+{
+	QLock		lk;
+};
+
+struct Kbdbuf
+{
+	Rune r[256];
+	int ri;
+	int wi;
+	int stall;
+	int alting;
+};
+
+struct Mousebuf
+{
+	Mouse m[256];
+	Mouse last;
+	int ri;
+	int wi;
+	int stall;
+	int resized;
+};
+
+struct Tagbuf
+{
+	int t[256];
+	int ri;
+	int wi;
+};
+
+struct Client
+{
+	/*Ref		r;*/
+	DImage*		dimage[NHASH];
+	CScreen*	cscreen;
+	Refresh*	refresh;
+	Rendez		refrend;
+	uchar*		readdata;
+	int		nreaddata;
+	int		busy;
+	int		clientid;
+	int		slot;
+	int		refreshme;
+	int		infoid;
+	int		op;
+
+	int		displaydpi;
+	int		forcedpi;
+	int		waste;
+	Rectangle	flushrect;
+	Memimage	*screenimage;
+	DScreen*	dscreen;
+	int		nname;
+	DName*		name;
+	int		namevers;
+
+	int		rfd;
+	int		wfd;
+	
+	QLock inputlk;
+	Kbdbuf kbd;
+	Mousebuf mouse;
+	Tagbuf kbdtags;
+	Tagbuf mousetags;
+	Rectangle mouserect;
+};
+
+struct Refresh
+{
+	DImage*		dimage;
+	Rectangle	r;
+	Refresh*	next;
+};
+
+struct Refx
+{
+	Client*		client;
+	DImage*		dimage;
+};
+
+struct DName
+{
+	char			*name;
+	Client	*client;
+	DImage*		dimage;
+	int			vers;
+};
+
+struct FChar
+{
+	int		minx;	/* left edge of bits */
+	int		maxx;	/* right edge of bits */
+	uchar		miny;	/* first non-zero scan-line */
+	uchar		maxy;	/* last non-zero scan-line + 1 */
+	schar		left;	/* offset of baseline */
+	uchar		width;	/* width of baseline */
+};
+
+/*
+ * Reference counts in DImages:
+ *	one per open by original client
+ *	one per screen image or fill
+ * 	one per image derived from this one by name
+ */
+struct DImage
+{
+	int		id;
+	int		ref;
+	char		*name;
+	int		vers;
+	Memimage*	image;
+	int		ascent;
+	int		nfchar;
+	FChar*		fchar;
+	DScreen*	dscreen;	/* 0 if not a window */
+	DImage*	fromname;	/* image this one is derived from, by name */
+	DImage*		next;
+};
+
+struct CScreen
+{
+	DScreen*	dscreen;
+	CScreen*	next;
+};
+
+struct DScreen
+{
+	int		id;
+	int		public;
+	int		ref;
+	DImage	*dimage;
+	DImage	*dfill;
+	Memscreen*	screen;
+	Client*		owner;
+	DScreen*	next;
+};
+
+int _drawmsgread(Client*, void*, int);
+int _drawmsgwrite(Client*, void*, int);
+void _initdisplaymemimage(Client*, Memimage*);
+void	_drawreplacescreenimage(Client*, Memimage*);
+
 int _latin1(Rune*, int);
 int parsewinsize(char*, Rectangle*, int*);
 int mouseswap(int);
-void abortcompose(void);
+void abortcompose(Client*);
 
-extern int displaydpi;
-extern int forcedpi;
+extern Client *client0;