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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#endif |
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|
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/* |
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* X11 driver for holodeck display. |
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* Based on rview driver. |
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*/ |
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|
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#include "standard.h" |
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#include "rhd_qtree.h" |
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|
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#include <X11/Xlib.h> |
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#include <X11/cursorfont.h> |
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#include <X11/Xutil.h> |
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|
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#include "x11icon.h" |
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|
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#define GAMMA 2.2 /* default gamma correction */ |
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|
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#define MINWIDTH 480 /* minimum graphics window width */ |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
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|
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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|
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#define BORWIDTH 5 /* border width */ |
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|
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#define ourscreen DefaultScreen(ourdisplay) |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
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ButtonPressMask) |
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|
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#define levptr(etype) ((etype *)¤tevent) |
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|
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struct driver odev; /* global device driver structure */ |
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|
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static XEvent currentevent; /* current event */ |
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|
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static int ncolors = 0; /* color table size */ |
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static int mapped = 0; /* window is mapped? */ |
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static unsigned long *pixval = NULL; /* allocated pixels */ |
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static unsigned long ourblack=0, ourwhite=1; |
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|
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static Display *ourdisplay = NULL; /* our display */ |
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|
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static XVisualInfo ourvinfo; /* our visual information */ |
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|
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static Window gwind = 0; /* our graphics window */ |
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|
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static GC ourgc = 0; /* our graphics context for drawing */ |
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|
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static Colormap ourmap = 0; /* our color map */ |
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|
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
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|
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static int inpresflags; /* input result flags */ |
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|
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static int heightlocked = 0; /* lock vertical motion */ |
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|
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static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
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getevent(), getkey(), fixwindow(); |
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static unsigned long true_pixel(); |
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|
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|
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static int |
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mytmflags() /* figure out tone mapping flags */ |
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{ |
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extern char *progname; |
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register char *cp, *tail; |
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/* find basic name */ |
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for (cp = tail = progname; *cp; cp++) |
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if (*cp == '/') |
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tail = cp+1; |
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for (cp = tail; *cp && *cp != '.'; cp++) |
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; |
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if (cp-tail == 3 && !strncmp(tail, "x11", 3)) |
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return(TM_F_CAMERA); |
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if (cp-tail == 4 && !strncmp(tail, "x11h", 4)) |
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return(TM_F_HUMAN); |
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error(USER, "illegal driver name"); |
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} |
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|
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|
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dev_open(id) /* initialize X11 driver */ |
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char *id; |
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{ |
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extern char *getenv(); |
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char *gv; |
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double gamval = GAMMA; |
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int nplanes; |
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int n; |
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XSetWindowAttributes ourwinattr; |
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XWMHints ourxwmhints; |
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XSizeHints oursizhints; |
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/* open display server */ |
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ourdisplay = XOpenDisplay(NULL); |
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if (ourdisplay == NULL) |
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error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
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/* find a usable visual */ |
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nplanes = DisplayPlanes(ourdisplay, ourscreen); |
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if (XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes>12?nplanes:24,TrueColor,&ourvinfo) || |
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XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes>12?nplanes:24,DirectColor,&ourvinfo)) { |
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ourblack = 0; |
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ourwhite = ourvinfo.red_mask | |
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ourvinfo.green_mask | |
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ourvinfo.blue_mask ; |
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} else { |
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if (nplanes < 4) |
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error(INTERNAL, "not enough colors\n"); |
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if (!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,PseudoColor,&ourvinfo) && |
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!XMatchVisualInfo(ourdisplay,ourscreen, |
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nplanes,GrayScale,&ourvinfo)) |
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error(INTERNAL, "unsupported visual type\n"); |
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ourblack = BlackPixel(ourdisplay,ourscreen); |
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ourwhite = WhitePixel(ourdisplay,ourscreen); |
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} |
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/* set gamma and tone mapping */ |
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if ((gv = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
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|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
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gamval = atof(gv); |
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if (tmInit(mytmflags(), stdprims, gamval) == NULL) |
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error(SYSTEM, "not enough memory in dev_open"); |
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/* open window */ |
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ourwinattr.background_pixel = ourblack; |
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ourwinattr.border_pixel = ourblack; |
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ourwinattr.event_mask = ourmask; |
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/* this is stupid */ |
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
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ourvinfo.visual, AllocNone); |
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
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BORWIDTH, ourvinfo.depth, InputOutput, ourvinfo.visual, |
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
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if (gwind == 0) |
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error(SYSTEM, "cannot create window\n"); |
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XStoreName(ourdisplay, gwind, id); |
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/* get graphics context */ |
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ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
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/* set window manager hints */ |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
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ourxwmhints.input = True; |
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ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
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gwind, x11icon_bits, x11icon_width, x11icon_height); |
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XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
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oursizhints.min_width = MINWIDTH; |
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oursizhints.min_height = MINHEIGHT; |
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oursizhints.flags = PMinSize; |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
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/* map the window and get its size */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); |
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/* figure out sensible view */ |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
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DisplayWidth(ourdisplay, ourscreen); |
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pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
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DisplayHeight(ourdisplay, ourscreen); |
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copystruct(&odev.v, &stdview); |
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odev.name = id; |
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odev.v.type = VT_PER; |
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odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
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odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
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odev.ifd = ConnectionNumber(ourdisplay); |
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/* allocate our leaf pile */ |
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qtDepthEps = 0.02; |
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n = odev.hres < odev.vres ? odev.hres : odev.vres; |
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qtMinNodesiz = 1; |
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if (!qtAllocLeaves(n*n/(qtMinNodesiz*qtMinNodesiz))) |
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error(SYSTEM, "insufficient memory for leaf storage"); |
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} |
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|
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|
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dev_close() /* close our display */ |
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{ |
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freepixels(); |
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XFreeGC(ourdisplay, ourgc); |
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XDestroyWindow(ourdisplay, gwind); |
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gwind = 0; |
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ourgc = 0; |
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XCloseDisplay(ourdisplay); |
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ourdisplay = NULL; |
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qtFreeLeaves(); |
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tmDone(NULL); |
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odev.v.type = 0; |
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odev.hres = odev.vres = 0; |
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odev.ifd = -1; |
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} |
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|
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|
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dev_view(nv) /* assign new driver view */ |
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VIEW *nv; |
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{ |
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if (nv != &odev.v) |
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copystruct(&odev.v, nv); |
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qtReplant(); |
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} |
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|
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|
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int |
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dev_input() /* get X11 input */ |
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{ |
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inpresflags = 0; |
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do |
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getevent(); |
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|
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while (XQLength(ourdisplay) > 0); |
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|
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return(inpresflags); |
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} |
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|
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|
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dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
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BYTE rgb[3]; |
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int xmin, ymin, xmax, ymax; |
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{ |
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unsigned long pixel; |
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|
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if (!mapped) |
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return; |
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if (ncolors > 0) |
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pixel = pixval[get_pixel(rgb, xnewcolr)]; |
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else |
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pixel = true_pixel(rgb); |
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XSetForeground(ourdisplay, ourgc, pixel); |
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XFillRectangle(ourdisplay, gwind, |
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ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
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} |
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|
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|
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int |
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dev_flush() /* flush output */ |
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{ |
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qtUpdate(); |
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return(XPending(ourdisplay)); |
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} |
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|
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|
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static |
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xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
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int ndx; |
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int r, g, b; |
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{ |
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XColor xcolor; |
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|
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xcolor.pixel = pixval[ndx]; |
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xcolor.red = r << 8; |
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xcolor.green = g << 8; |
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xcolor.blue = b << 8; |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
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|
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XStoreColor(ourdisplay, ourmap, &xcolor); |
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} |
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|
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|
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static int |
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getpixels() /* get the color map */ |
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{ |
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XColor thiscolor; |
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register int i, j; |
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|
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if (ncolors > 0) |
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return(ncolors); |
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if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
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ourmap = DefaultColormap(ourdisplay,ourscreen); |
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goto loop; |
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} |
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newmap: |
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ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
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loop: |
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for (ncolors = ourvinfo.colormap_size; |
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ncolors > ourvinfo.colormap_size/3; |
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ncolors = ncolors*.937) { |
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pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
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if (pixval == NULL) |
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return(ncolors = 0); |
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if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
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break; |
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free((char *)pixval); |
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pixval = NULL; |
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} |
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if (pixval == NULL) { |
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if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
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goto newmap; /* try it with our map */ |
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else |
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return(ncolors = 0); /* failed */ |
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} |
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if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
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for (i = 0; i < ncolors; i++) { /* reset black and white */ |
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if (pixval[i] != ourblack && pixval[i] != ourwhite) |
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continue; |
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thiscolor.pixel = pixval[i]; |
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thiscolor.flags = DoRed|DoGreen|DoBlue; |
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XQueryColor(ourdisplay, |
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DefaultColormap(ourdisplay,ourscreen), |
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&thiscolor); |
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XStoreColor(ourdisplay, ourmap, &thiscolor); |
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for (j = i; j+1 < ncolors; j++) |
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pixval[j] = pixval[j+1]; |
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ncolors--; |
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i--; |
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} |
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XSetWindowColormap(ourdisplay, gwind, ourmap); |
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return(ncolors); |
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} |
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|
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|
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static |
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freepixels() /* free our pixels */ |
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{ |
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if (ncolors == 0) |
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return; |
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XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
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free((char *)pixval); |
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pixval = NULL; |
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ncolors = 0; |
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if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
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XFreeColormap(ourdisplay, ourmap); |
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ourmap = 0; |
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} |
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|
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|
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static unsigned long |
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true_pixel(rgb) /* return true pixel value for color */ |
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register BYTE rgb[3]; |
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{ |
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register unsigned long rval; |
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|
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rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
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rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
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rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
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return(rval); |
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} |
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|
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|
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static |
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getevent() /* get next event */ |
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{ |
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XNextEvent(ourdisplay, levptr(XEvent)); |
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switch (levptr(XEvent)->type) { |
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case ConfigureNotify: |
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resizewindow(levptr(XConfigureEvent)); |
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break; |
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case UnmapNotify: |
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mapped = 0; |
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freepixels(); |
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break; |
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case MapNotify: |
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if (ourvinfo.class == PseudoColor || |
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ourvinfo.class == GrayScale) { |
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if (getpixels() == 0) |
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error(SYSTEM, "cannot allocate colors\n"); |
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new_ctab(ncolors); |
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} |
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mapped = 1; |
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break; |
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case Expose: |
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fixwindow(levptr(XExposeEvent)); |
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break; |
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case KeyPress: |
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getkey(levptr(XKeyPressedEvent)); |
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break; |
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case ButtonPress: |
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/* getmove(levptr(XButtonPressedEvent)); */ |
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break; |
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} |
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} |
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|
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|
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static |
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getkey(ekey) /* get input key */ |
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register XKeyPressedEvent *ekey; |
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{ |
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int n; |
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char buf[8]; |
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|
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n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
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if (n != 1) |
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return; |
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switch (buf[0]) { |
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case 'h': /* turn on height motion lock */ |
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heightlocked = 1; |
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return; |
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case 'H': /* turn off height motion lock */ |
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heightlocked = 0; |
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return; |
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case 'Q': |
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case 'q': /* quit the program */ |
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inpresflags |= DEV_SHUTDOWN; |
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return; |
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default: |
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XBell(ourdisplay, 0); |
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return; |
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} |
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} |
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|
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|
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static |
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fixwindow(eexp) /* repair damage to window */ |
| 404 |
register XExposeEvent *eexp; |
| 405 |
{ |
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if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
| 407 |
eputs("Resizing window in fixwindow\n"); |
| 408 |
odev.hres = eexp->width; |
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odev.vres = eexp->height; |
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inpresflags |= DEV_NEWSIZE; |
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} |
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qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
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eexp->x + eexp->width, odev.vres - eexp->y); |
| 414 |
} |
| 415 |
|
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|
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static |
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resizewindow(ersz) /* resize window */ |
| 419 |
register XConfigureEvent *ersz; |
| 420 |
{ |
| 421 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
| 422 |
return; |
| 423 |
|
| 424 |
if (odev.hres != 0 && odev.vres != 0) { |
| 425 |
odev.v.horiz = 2.*180./PI * atan( |
| 426 |
tan(PI/180./2.*odev.v.horiz) * ersz->width/odev.hres ); |
| 427 |
odev.v.vert = 2.*180./PI * atan( |
| 428 |
tan(PI/180./2.*odev.v.vert) * ersz->height/odev.vres ); |
| 429 |
inpresflags |= DEV_NEWVIEW; |
| 430 |
} |
| 431 |
odev.hres = ersz->width; |
| 432 |
odev.vres = ersz->height; |
| 433 |
|
| 434 |
inpresflags |= DEV_NEWSIZE; |
| 435 |
} |
