wmii

git clone git://oldgit.suckless.org/wmii/
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initdisplay.c (2129B)

      1 /* Copyright ©2007-2010 Kris Maglione <maglione.k at Gmail>
      2  * See LICENSE file for license details.
      3  */
      4 #include "x11.h"
      5 
      6 int	(*xlib_errorhandler) (Display*, XErrorEvent*);
      7 
      8 Map	windowmap;
      9 Map	atommap;
     10 Map	atomnamemap;
     11 static MapEnt*	wbucket[137];
     12 static MapEnt*	abucket[137];
     13 static MapEnt*	anamebucket[137];
     14 
     15 static int
     16 Afmt(Fmt *f) {
     17 
     18 	return fmtstrcpy(f, atomname(va_arg(f->args, Atom)));
     19 }
     20 
     21 static int
     22 Lfmt(Fmt *f) {
     23 	Color c;
     24 
     25 #define fix(c, m) (ushort)((c.alpha ? (ulong)c.m * 0xffff / c.alpha : 0) >> 8)
     26 	c = va_arg(f->args, Color);
     27 	return fmtprint(f, c.alpha < 0xff00 ? "rgba:%02uhx/%02uhx/%02uhx/%02uhx"
     28 					    : "#%02uhx%02uhx%02uhx",
     29 			fix(c, red), fix(c, green), fix(c, blue), c.alpha >> 8);
     30 #undef fix
     31 }
     32 
     33 static int
     34 Pfmt(Fmt *f) {
     35 	Point p;
     36 
     37 	p = va_arg(f->args, Point);
     38 	return fmtprint(f, "(%d,%d)", p.x, p.y);
     39 }
     40 
     41 static int
     42 Rfmt(Fmt *f) {
     43 	Rectangle r;
     44 
     45 	r = va_arg(f->args, Rectangle);
     46 	return fmtprint(f, "%P+%dx%d", r.min, Dx(r), Dy(r));
     47 }
     48 
     49 static int
     50 Wfmt(Fmt *f) {
     51 	Window *w;
     52 
     53 	w = va_arg(f->args, Window*);
     54 	if(w == nil)
     55 		return fmtstrcpy(f, "<nil>");
     56 	return fmtprint(f, "0x%ulx", w->xid);
     57 }
     58 
     59 void
     60 initdisplay(void) {
     61 	display = XOpenDisplay(nil);
     62 	if(display == nil)
     63 		fatal("Can't open display");
     64 	scr.screen = DefaultScreen(display);
     65 	scr.colormap = DefaultColormap(display, scr.screen);
     66 	scr.visual = DefaultVisual(display, scr.screen);
     67 	scr.gc = DefaultGC(display, scr.screen);
     68 	scr.depth = DefaultDepth(display, scr.screen);
     69 
     70 	scr.root.xid = RootWindow(display, scr.screen);
     71 	scr.root.visual = scr.visual;
     72 	scr.root.r = Rect(0, 0,
     73 			  DisplayWidth(display, scr.screen),
     74 			  DisplayHeight(display, scr.screen));
     75 	scr.rect = scr.root.r;
     76 
     77 	scr.root.parent = &scr.root;
     78 
     79 	scr.xim = XOpenIM(display, nil, nil, nil);
     80 
     81 	windowmap.bucket = wbucket;
     82 	windowmap.nhash = nelem(wbucket);
     83 	atommap.bucket = abucket;
     84 	atommap.nhash = nelem(abucket);
     85 	atomnamemap.bucket = anamebucket;
     86 	atomnamemap.nhash = nelem(anamebucket);
     87 
     88 	fmtinstall('A', Afmt);
     89 	fmtinstall('L', Lfmt);
     90 	fmtinstall('R', Rfmt);
     91 	fmtinstall('P', Pfmt);
     92 	fmtinstall('W', Wfmt);
     93 
     94 	xlib_errorhandler = XSetErrorHandler(errorhandler);
     95 }