1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ SGI"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* X11 driver for holodeck display. |
9 |
* Based on rview driver. |
10 |
*/ |
11 |
|
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#include "standard.h" |
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#include "rhd_qtree.h" |
14 |
|
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#include <X11/Xlib.h> |
16 |
#include <X11/cursorfont.h> |
17 |
#include <X11/Xutil.h> |
18 |
|
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#include "x11icon.h" |
20 |
|
21 |
#define CTRL(c) ((c)-'@') |
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|
23 |
#define GAMMA 2.2 /* default gamma correction */ |
24 |
|
25 |
#define MOVPCT 10 /* percent distance to move */ |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
27 |
|
28 |
#define MINWIDTH 480 /* minimum graphics window width */ |
29 |
#define MINHEIGHT 400 /* minimum graphics window height */ |
30 |
|
31 |
#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
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|
33 |
#define BORWIDTH 5 /* border width */ |
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|
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#define ourscreen DefaultScreen(ourdisplay) |
36 |
#define ourroot RootWindow(ourdisplay,ourscreen) |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
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ButtonPressMask|ButtonReleaseMask) |
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|
40 |
#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 headlocked = 0; /* lock vertical motion */ |
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|
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static int getpixels(), xnewcolr(), freepixels(), resizewindow(), |
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getevent(), getkey(), moveview(), getmove(), 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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XSetWindowAttributes ourwinattr; |
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XWMHints ourxwmhints; |
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XSizeHints oursizhints; |
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/* set quadtree globals */ |
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qtDepthEps = 0.02; |
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qtMinNodesiz = 2; |
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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 |
131 |
|| (gv = getenv("DISPLAY_GAMMA")) != NULL) |
132 |
gamval = atof(gv); |
133 |
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); |
142 |
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); |
147 |
if (gwind == 0) |
148 |
error(SYSTEM, "cannot create window\n"); |
149 |
XStoreName(ourdisplay, gwind, id); |
150 |
/* get graphics context */ |
151 |
ourgc = XCreateGC(ourdisplay, gwind, 0, NULL); |
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/* set window manager hints */ |
153 |
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); |
157 |
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); |
162 |
/* map the window and get its size */ |
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XMapWindow(ourdisplay, gwind); |
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dev_input(); |
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/* allocate our leaf pile */ |
166 |
if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
167 |
DisplayHeight(ourdisplay,ourscreen) / |
168 |
(qtMinNodesiz*qtMinNodesiz))) |
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error(SYSTEM, "insufficient memory for leaf storage"); |
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|
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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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} |
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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; |
194 |
qtFreeLeaves(); |
195 |
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; |
199 |
} |
200 |
|
201 |
|
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dev_view(nv) /* assign new driver view */ |
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VIEW *nv; |
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{ |
205 |
if (nv != &odev.v) |
206 |
copystruct(&odev.v, nv); |
207 |
qtReplant(); |
208 |
} |
209 |
|
210 |
|
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int |
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dev_input() /* get X11 input */ |
213 |
{ |
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inpresflags = 0; |
215 |
|
216 |
do |
217 |
getevent(); |
218 |
|
219 |
while (XQLength(ourdisplay) > 0); |
220 |
|
221 |
return(inpresflags); |
222 |
} |
223 |
|
224 |
|
225 |
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; |
228 |
{ |
229 |
unsigned long pixel; |
230 |
|
231 |
if (!mapped) |
232 |
return; |
233 |
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); |
238 |
XFillRectangle(ourdisplay, gwind, |
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ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
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} |
241 |
|
242 |
|
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int |
244 |
dev_flush() /* flush output */ |
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{ |
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qtUpdate(); |
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return(XPending(ourdisplay)); |
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} |
249 |
|
250 |
|
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static |
252 |
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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{ |
256 |
XColor xcolor; |
257 |
|
258 |
xcolor.pixel = pixval[ndx]; |
259 |
xcolor.red = r << 8; |
260 |
xcolor.green = g << 8; |
261 |
xcolor.blue = b << 8; |
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xcolor.flags = DoRed|DoGreen|DoBlue; |
263 |
|
264 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
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} |
266 |
|
267 |
|
268 |
static int |
269 |
getpixels() /* get the color map */ |
270 |
{ |
271 |
XColor thiscolor; |
272 |
register int i, j; |
273 |
|
274 |
if (ncolors > 0) |
275 |
return(ncolors); |
276 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
277 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
278 |
goto loop; |
279 |
} |
280 |
newmap: |
281 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
282 |
loop: |
283 |
for (ncolors = ourvinfo.colormap_size; |
284 |
ncolors > ourvinfo.colormap_size/3; |
285 |
ncolors = ncolors*.937) { |
286 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
287 |
if (pixval == NULL) |
288 |
return(ncolors = 0); |
289 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
290 |
break; |
291 |
free((char *)pixval); |
292 |
pixval = NULL; |
293 |
} |
294 |
if (pixval == NULL) { |
295 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
296 |
goto newmap; /* try it with our map */ |
297 |
else |
298 |
return(ncolors = 0); /* failed */ |
299 |
} |
300 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
301 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
302 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
303 |
continue; |
304 |
thiscolor.pixel = pixval[i]; |
305 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
306 |
XQueryColor(ourdisplay, |
307 |
DefaultColormap(ourdisplay,ourscreen), |
308 |
&thiscolor); |
309 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
310 |
for (j = i; j+1 < ncolors; j++) |
311 |
pixval[j] = pixval[j+1]; |
312 |
ncolors--; |
313 |
i--; |
314 |
} |
315 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
316 |
return(ncolors); |
317 |
} |
318 |
|
319 |
|
320 |
static |
321 |
freepixels() /* free our pixels */ |
322 |
{ |
323 |
if (ncolors == 0) |
324 |
return; |
325 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
326 |
free((char *)pixval); |
327 |
pixval = NULL; |
328 |
ncolors = 0; |
329 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
330 |
XFreeColormap(ourdisplay, ourmap); |
331 |
ourmap = 0; |
332 |
} |
333 |
|
334 |
|
335 |
static unsigned long |
336 |
true_pixel(rgb) /* return true pixel value for color */ |
337 |
register BYTE rgb[3]; |
338 |
{ |
339 |
register unsigned long rval; |
340 |
|
341 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
342 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
343 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
344 |
return(rval); |
345 |
} |
346 |
|
347 |
|
348 |
static |
349 |
getevent() /* get next event */ |
350 |
{ |
351 |
XNextEvent(ourdisplay, levptr(XEvent)); |
352 |
switch (levptr(XEvent)->type) { |
353 |
case ConfigureNotify: |
354 |
resizewindow(levptr(XConfigureEvent)); |
355 |
break; |
356 |
case UnmapNotify: |
357 |
mapped = 0; |
358 |
freepixels(); |
359 |
break; |
360 |
case MapNotify: |
361 |
if (ourvinfo.class == PseudoColor || |
362 |
ourvinfo.class == GrayScale) { |
363 |
if (getpixels() == 0) |
364 |
error(SYSTEM, "cannot allocate colors\n"); |
365 |
new_ctab(ncolors); |
366 |
} |
367 |
mapped = 1; |
368 |
break; |
369 |
case Expose: |
370 |
fixwindow(levptr(XExposeEvent)); |
371 |
break; |
372 |
case KeyPress: |
373 |
getkey(levptr(XKeyPressedEvent)); |
374 |
break; |
375 |
case ButtonPress: |
376 |
getmove(levptr(XButtonPressedEvent)); |
377 |
break; |
378 |
} |
379 |
} |
380 |
|
381 |
|
382 |
static |
383 |
moveview(dx, dy, move) /* move our view */ |
384 |
int dx, dy, move; |
385 |
{ |
386 |
VIEW nv; |
387 |
double d; |
388 |
register int i, li; |
389 |
/* start with old view */ |
390 |
copystruct(&nv, &odev.v); |
391 |
/* change view direction */ |
392 |
if (move) { |
393 |
if ((li = qtFindLeaf(dx, dy)) < 0) |
394 |
return(0); /* not on window */ |
395 |
for (i = 0; i < 3; i++) |
396 |
nv.vdir[i] = qtL.wp[li][i] - nv.vp[i]; |
397 |
} else { |
398 |
if (viewray(nv.vp, nv.vdir, &odev.v, |
399 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
400 |
return(0); /* outside view */ |
401 |
} |
402 |
/* move viewpoint */ |
403 |
if (move > 0) |
404 |
for (i = 0; i < 3; i++) |
405 |
nv.vp[i] += MOVPCT/100. * nv.vdir[i]; |
406 |
else if (move < 0) |
407 |
for (i = 0; i < 3; i++) |
408 |
nv.vp[i] -= MOVPCT/100. * nv.vdir[i]; |
409 |
if (move && headlocked) { |
410 |
d = 0; /* bring head back to same height */ |
411 |
for (i = 0; i < 3; i++) |
412 |
d += odev.v.vup[i] * (odev.v.vp[i] - nv.vp[i]); |
413 |
for (i = 0; i < 3; i++) |
414 |
nv.vp[i] += d * odev.v.vup[i]; |
415 |
} |
416 |
if (setview(&nv) != NULL) |
417 |
return(0); /* illegal view */ |
418 |
dev_view(&nv); |
419 |
inpresflags |= DEV_NEWVIEW; |
420 |
return(1); |
421 |
} |
422 |
|
423 |
|
424 |
static |
425 |
getmove(ebut) /* get view change */ |
426 |
XButtonPressedEvent *ebut; |
427 |
{ |
428 |
int whichbutton = ebut->button; |
429 |
int oldnodesiz = qtMinNodesiz; |
430 |
Window rootw, childw; |
431 |
int rootx, rooty, wx, wy; |
432 |
unsigned int statemask; |
433 |
|
434 |
qtMinNodesiz = 16; /* for quicker update */ |
435 |
|
436 |
do { |
437 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
438 |
&rootx, &rooty, &wx, &wy, &statemask)) |
439 |
break; /* on another screen */ |
440 |
|
441 |
if (!moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton))) |
442 |
sleep(1); |
443 |
else |
444 |
qtUpdate(); |
445 |
|
446 |
} while (!XCheckMaskEvent(ourdisplay, |
447 |
ButtonReleaseMask, levptr(XEvent))); |
448 |
|
449 |
if (!(inpresflags & DEV_NEWVIEW)) { /* do final motion */ |
450 |
whichbutton = levptr(XButtonReleasedEvent)->button; |
451 |
wx = levptr(XButtonReleasedEvent)->x; |
452 |
wy = levptr(XButtonReleasedEvent)->y; |
453 |
moveview(wx, odev.vres-1-wy, MOVDIR(whichbutton)); |
454 |
dev_flush(); |
455 |
} |
456 |
|
457 |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
458 |
} |
459 |
|
460 |
|
461 |
static |
462 |
getkey(ekey) /* get input key */ |
463 |
register XKeyPressedEvent *ekey; |
464 |
{ |
465 |
int n; |
466 |
char buf[8]; |
467 |
|
468 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
469 |
if (n != 1) |
470 |
return; |
471 |
switch (buf[0]) { |
472 |
case 'h': /* turn on height motion lock */ |
473 |
headlocked = 1; |
474 |
return; |
475 |
case 'H': /* turn off height motion lock */ |
476 |
headlocked = 0; |
477 |
return; |
478 |
case CTRL('S'): |
479 |
case 'p': /* pause computation */ |
480 |
inpresflags |= DEV_WAIT; |
481 |
return; |
482 |
case 'v': /* spit out view */ |
483 |
fputs(VIEWSTR, stderr); |
484 |
fprintview(&odev.v, stderr); |
485 |
fputc('\n', stderr); |
486 |
return; |
487 |
case CTRL('Q'): |
488 |
case '\n': |
489 |
case '\r': /* resume computation */ |
490 |
inpresflags |= DEV_RESUME; |
491 |
return; |
492 |
case CTRL('R'): /* redraw screen */ |
493 |
if (ncolors > 0) |
494 |
new_ctab(ncolors); |
495 |
qtRedraw(0, 0, odev.hres, odev.vres); |
496 |
return; |
497 |
case CTRL('L'): /* refresh from server */ |
498 |
if (inpresflags & DEV_REDRAW) |
499 |
return; |
500 |
XClearWindow(ourdisplay, gwind); |
501 |
XFlush(ourdisplay); |
502 |
qtCompost(100); /* unload the old tree */ |
503 |
if (ncolors > 0) |
504 |
new_ctab(ncolors); |
505 |
inpresflags |= DEV_REDRAW; /* resend values from server */ |
506 |
return; |
507 |
case CTRL('D'): |
508 |
case 'Q': |
509 |
case 'q': /* quit the program */ |
510 |
inpresflags |= DEV_SHUTDOWN; |
511 |
return; |
512 |
default: |
513 |
XBell(ourdisplay, 0); |
514 |
return; |
515 |
} |
516 |
} |
517 |
|
518 |
|
519 |
static |
520 |
fixwindow(eexp) /* repair damage to window */ |
521 |
register XExposeEvent *eexp; |
522 |
{ |
523 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
524 |
odev.hres = eexp->width; |
525 |
odev.vres = eexp->height; |
526 |
inpresflags |= DEV_NEWSIZE; |
527 |
} |
528 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
529 |
eexp->x + eexp->width, odev.vres - eexp->y); |
530 |
} |
531 |
|
532 |
|
533 |
static |
534 |
resizewindow(ersz) /* resize window */ |
535 |
register XConfigureEvent *ersz; |
536 |
{ |
537 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
538 |
return; |
539 |
|
540 |
if (odev.hres != 0 && odev.vres != 0) { |
541 |
odev.v.horiz = 2.*180./PI * atan( |
542 |
tan(PI/180./2.*odev.v.horiz) * ersz->width/odev.hres ); |
543 |
odev.v.vert = 2.*180./PI * atan( |
544 |
tan(PI/180./2.*odev.v.vert) * ersz->height/odev.vres ); |
545 |
inpresflags |= DEV_NEWVIEW; |
546 |
} |
547 |
odev.hres = ersz->width; |
548 |
odev.vres = ersz->height; |
549 |
|
550 |
inpresflags |= DEV_NEWSIZE; |
551 |
} |