1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
2 |
|
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#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" |
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|
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#include <X11/Xlib.h> |
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#include <X11/cursorfont.h> |
17 |
#include <X11/Xutil.h> |
18 |
|
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#include "x11icon.h" |
20 |
|
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#ifndef FEQ |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
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#endif |
24 |
|
25 |
#define CTRL(c) ((c)-'@') |
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|
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#define GAMMA 2.2 /* default gamma correction */ |
28 |
|
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#define MOVPCT 7 /* percent distance to move /frame */ |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
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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 */ |
40 |
|
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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|ButtonReleaseMask) |
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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 */ |
49 |
|
50 |
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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|
57 |
static Display *ourdisplay = NULL; /* our display */ |
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static XVisualInfo ourvinfo; /* our visual information */ |
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static Window gwind = 0; /* our graphics window */ |
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static GC ourgc = 0; /* our graphics context for drawing */ |
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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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qtMinNodesiz = 2; |
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/* open display server */ |
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ourdisplay = XOpenDisplay(NULL); |
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if (ourdisplay == NULL) |
108 |
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); |
148 |
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; |
162 |
XSetNormalHints(ourdisplay, gwind, &oursizhints); |
163 |
/* map the window and get its size */ |
164 |
XMapWindow(ourdisplay, gwind); |
165 |
dev_input(); |
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/* allocate our leaf pile */ |
167 |
if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) * |
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DisplayHeight(ourdisplay,ourscreen) / |
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(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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} |
184 |
|
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|
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dev_close() /* close our display */ |
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{ |
188 |
freepixels(); |
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XFreeGC(ourdisplay, ourgc); |
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XDestroyWindow(ourdisplay, gwind); |
191 |
gwind = 0; |
192 |
ourgc = 0; |
193 |
XCloseDisplay(ourdisplay); |
194 |
ourdisplay = NULL; |
195 |
qtFreeLeaves(); |
196 |
tmDone(NULL); |
197 |
odev.v.type = 0; |
198 |
odev.hres = odev.vres = 0; |
199 |
odev.ifd = -1; |
200 |
} |
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|
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|
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int |
204 |
dev_view(nv) /* assign new driver view */ |
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VIEW *nv; |
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{ |
207 |
if (nv->type == VT_PAR || /* check view legality */ |
208 |
nv->horiz > 160. || nv->vert > 160.) { |
209 |
error(COMMAND, "illegal view type/angle"); |
210 |
nv->type = VT_PER; |
211 |
nv->horiz = odev.v.horiz; |
212 |
nv->vert = odev.v.vert; |
213 |
return(0); |
214 |
} |
215 |
if (nv->vfore > FTINY) { |
216 |
error(COMMAND, "cannot handle fore clipping"); |
217 |
nv->vfore = 0.; |
218 |
return(0); |
219 |
} |
220 |
if (nv != &odev.v) { |
221 |
if (!FEQ(nv->horiz,odev.v.horiz) || /* resize window? */ |
222 |
!FEQ(nv->vert,odev.v.vert)) { |
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int dw = DisplayWidth(ourdisplay,ourscreen); |
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int dh = DisplayHeight(ourdisplay,ourscreen); |
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|
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dw -= 25; /* for window frame */ |
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dh -= 100; |
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odev.hres = 2.*VIEWDIST/pwidth * |
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tan(PI/180./2.*nv->horiz); |
230 |
odev.vres = 2.*VIEWDIST/pheight * |
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tan(PI/180./2.*nv->vert); |
232 |
if (odev.hres > dw) { |
233 |
odev.vres = dw * odev.vres / odev.hres; |
234 |
odev.hres = dw; |
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} |
236 |
if (odev.vres > dh) { |
237 |
odev.hres = dh * odev.hres / odev.vres; |
238 |
odev.vres = dh; |
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} |
240 |
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
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} |
242 |
copystruct(&odev.v, nv); |
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} |
244 |
qtReplant(); |
245 |
return(1); |
246 |
} |
247 |
|
248 |
|
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int |
250 |
dev_input() /* get X11 input */ |
251 |
{ |
252 |
inpresflags = 0; |
253 |
|
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do |
255 |
getevent(); |
256 |
|
257 |
while (XQLength(ourdisplay) > 0); |
258 |
|
259 |
return(inpresflags); |
260 |
} |
261 |
|
262 |
|
263 |
dev_paintr(rgb, xmin, ymin, xmax, ymax) /* fill a rectangle */ |
264 |
BYTE rgb[3]; |
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int xmin, ymin, xmax, ymax; |
266 |
{ |
267 |
unsigned long pixel; |
268 |
|
269 |
if (!mapped) |
270 |
return; |
271 |
if (ncolors > 0) |
272 |
pixel = pixval[get_pixel(rgb, xnewcolr)]; |
273 |
else |
274 |
pixel = true_pixel(rgb); |
275 |
XSetForeground(ourdisplay, ourgc, pixel); |
276 |
XFillRectangle(ourdisplay, gwind, |
277 |
ourgc, xmin, odev.vres-ymax, xmax-xmin, ymax-ymin); |
278 |
} |
279 |
|
280 |
|
281 |
int |
282 |
dev_flush() /* flush output */ |
283 |
{ |
284 |
qtUpdate(); |
285 |
return(XPending(ourdisplay)); |
286 |
} |
287 |
|
288 |
|
289 |
static |
290 |
xnewcolr(ndx, r, g, b) /* enter a color into hardware table */ |
291 |
int ndx; |
292 |
int r, g, b; |
293 |
{ |
294 |
XColor xcolor; |
295 |
|
296 |
xcolor.pixel = pixval[ndx]; |
297 |
xcolor.red = r << 8; |
298 |
xcolor.green = g << 8; |
299 |
xcolor.blue = b << 8; |
300 |
xcolor.flags = DoRed|DoGreen|DoBlue; |
301 |
|
302 |
XStoreColor(ourdisplay, ourmap, &xcolor); |
303 |
} |
304 |
|
305 |
|
306 |
static int |
307 |
getpixels() /* get the color map */ |
308 |
{ |
309 |
XColor thiscolor; |
310 |
register int i, j; |
311 |
|
312 |
if (ncolors > 0) |
313 |
return(ncolors); |
314 |
if (ourvinfo.visual == DefaultVisual(ourdisplay,ourscreen)) { |
315 |
ourmap = DefaultColormap(ourdisplay,ourscreen); |
316 |
goto loop; |
317 |
} |
318 |
newmap: |
319 |
ourmap = XCreateColormap(ourdisplay,gwind,ourvinfo.visual,AllocNone); |
320 |
loop: |
321 |
for (ncolors = ourvinfo.colormap_size; |
322 |
ncolors > ourvinfo.colormap_size/3; |
323 |
ncolors = ncolors*.937) { |
324 |
pixval = (unsigned long *)malloc(ncolors*sizeof(unsigned long)); |
325 |
if (pixval == NULL) |
326 |
return(ncolors = 0); |
327 |
if (XAllocColorCells(ourdisplay,ourmap,0,NULL,0,pixval,ncolors)) |
328 |
break; |
329 |
free((char *)pixval); |
330 |
pixval = NULL; |
331 |
} |
332 |
if (pixval == NULL) { |
333 |
if (ourmap == DefaultColormap(ourdisplay,ourscreen)) |
334 |
goto newmap; /* try it with our map */ |
335 |
else |
336 |
return(ncolors = 0); /* failed */ |
337 |
} |
338 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
339 |
for (i = 0; i < ncolors; i++) { /* reset black and white */ |
340 |
if (pixval[i] != ourblack && pixval[i] != ourwhite) |
341 |
continue; |
342 |
thiscolor.pixel = pixval[i]; |
343 |
thiscolor.flags = DoRed|DoGreen|DoBlue; |
344 |
XQueryColor(ourdisplay, |
345 |
DefaultColormap(ourdisplay,ourscreen), |
346 |
&thiscolor); |
347 |
XStoreColor(ourdisplay, ourmap, &thiscolor); |
348 |
for (j = i; j+1 < ncolors; j++) |
349 |
pixval[j] = pixval[j+1]; |
350 |
ncolors--; |
351 |
i--; |
352 |
} |
353 |
XSetWindowColormap(ourdisplay, gwind, ourmap); |
354 |
return(ncolors); |
355 |
} |
356 |
|
357 |
|
358 |
static |
359 |
freepixels() /* free our pixels */ |
360 |
{ |
361 |
if (ncolors == 0) |
362 |
return; |
363 |
XFreeColors(ourdisplay,ourmap,pixval,ncolors,0L); |
364 |
free((char *)pixval); |
365 |
pixval = NULL; |
366 |
ncolors = 0; |
367 |
if (ourmap != DefaultColormap(ourdisplay,ourscreen)) |
368 |
XFreeColormap(ourdisplay, ourmap); |
369 |
ourmap = 0; |
370 |
} |
371 |
|
372 |
|
373 |
static unsigned long |
374 |
true_pixel(rgb) /* return true pixel value for color */ |
375 |
register BYTE rgb[3]; |
376 |
{ |
377 |
register unsigned long rval; |
378 |
|
379 |
rval = ourvinfo.red_mask*rgb[RED]/255 & ourvinfo.red_mask; |
380 |
rval |= ourvinfo.green_mask*rgb[GRN]/255 & ourvinfo.green_mask; |
381 |
rval |= ourvinfo.blue_mask*rgb[BLU]/255 & ourvinfo.blue_mask; |
382 |
return(rval); |
383 |
} |
384 |
|
385 |
|
386 |
static |
387 |
getevent() /* get next event */ |
388 |
{ |
389 |
XNextEvent(ourdisplay, levptr(XEvent)); |
390 |
switch (levptr(XEvent)->type) { |
391 |
case ConfigureNotify: |
392 |
resizewindow(levptr(XConfigureEvent)); |
393 |
break; |
394 |
case UnmapNotify: |
395 |
mapped = 0; |
396 |
freepixels(); |
397 |
break; |
398 |
case MapNotify: |
399 |
if (ourvinfo.class == PseudoColor || |
400 |
ourvinfo.class == GrayScale) { |
401 |
if (getpixels() == 0) |
402 |
error(SYSTEM, "cannot allocate colors\n"); |
403 |
new_ctab(ncolors); |
404 |
} |
405 |
mapped = 1; |
406 |
break; |
407 |
case Expose: |
408 |
fixwindow(levptr(XExposeEvent)); |
409 |
break; |
410 |
case KeyPress: |
411 |
getkey(levptr(XKeyPressedEvent)); |
412 |
break; |
413 |
case ButtonPress: |
414 |
getmove(levptr(XButtonPressedEvent)); |
415 |
break; |
416 |
} |
417 |
} |
418 |
|
419 |
|
420 |
static |
421 |
ilclip(dp, wp) /* clip world coordinates to device */ |
422 |
int dp[2][2]; |
423 |
FVECT wp[2]; |
424 |
{ |
425 |
static FVECT vmin = {0.,0.,0.}, vmax = {1.,1.,FHUGE}; |
426 |
FVECT ip[2]; |
427 |
/* not exactly right, but who cares? */ |
428 |
viewloc(ip[0], &odev.v, wp[0]); |
429 |
viewloc(ip[1], &odev.v, wp[1]); |
430 |
if (!clip(ip[0], ip[1], vmin, vmax)) |
431 |
return(0); |
432 |
dp[0][0] = ip[0][0]*odev.hres; |
433 |
dp[0][1] = ip[0][1]*odev.vres; |
434 |
dp[1][0] = ip[1][0]*odev.hres; |
435 |
dp[1][1] = ip[1][1]*odev.vres; |
436 |
return(1); |
437 |
} |
438 |
|
439 |
|
440 |
static |
441 |
draw3dline(wp) /* draw 3d line in world coordinates */ |
442 |
FVECT wp[2]; |
443 |
{ |
444 |
int dp[2][2]; |
445 |
|
446 |
if (!ilclip(dp, wp)) |
447 |
return; |
448 |
XDrawLine(ourdisplay, gwind, ourgc, |
449 |
dp[0][0], odev.vres-1 - dp[0][1], |
450 |
dp[1][0], odev.vres-1 - dp[1][1]); |
451 |
} |
452 |
|
453 |
|
454 |
static |
455 |
draw_grids() /* draw holodeck section grids */ |
456 |
{ |
457 |
static BYTE gridrgb[3] = {0x0, 0xff, 0xff}; |
458 |
unsigned long pixel; |
459 |
|
460 |
if (!mapped || odev.v.type != VT_PER) |
461 |
return; |
462 |
if (ncolors > 0) |
463 |
pixel = pixval[get_pixel(gridrgb, xnewcolr)]; |
464 |
else |
465 |
pixel = true_pixel(gridrgb); |
466 |
XSetForeground(ourdisplay, ourgc, pixel); |
467 |
/* draw each grid line */ |
468 |
gridlines(draw3dline); |
469 |
} |
470 |
|
471 |
|
472 |
static |
473 |
moveview(dx, dy, mov, orb) /* move our view */ |
474 |
int dx, dy, mov, orb; |
475 |
{ |
476 |
VIEW nv; |
477 |
FVECT v1; |
478 |
double d; |
479 |
register int li; |
480 |
/* start with old view */ |
481 |
copystruct(&nv, &odev.v); |
482 |
/* change view direction */ |
483 |
if (mov | orb) { |
484 |
if ((li = qtFindLeaf(dx, dy)) < 0) |
485 |
return(0); /* not on window */ |
486 |
VSUM(nv.vdir, qtL.wp[li], nv.vp, -1.); |
487 |
} else { |
488 |
if (viewray(nv.vp, nv.vdir, &odev.v, |
489 |
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
490 |
return(0); /* outside view */ |
491 |
} |
492 |
if (orb && mov) { /* orbit left/right */ |
493 |
spinvector(nv.vdir, nv.vdir, nv.vup, MOVDEG*PI/180.*mov); |
494 |
VSUM(nv.vp, qtL.wp[li], nv.vdir, -1.); |
495 |
} else if (orb) { /* orbit up/down */ |
496 |
fcross(v1, nv.vdir, nv.vup); |
497 |
if (normalize(v1) == 0.) |
498 |
return(0); |
499 |
spinvector(nv.vdir, nv.vdir, v1, MOVDEG*PI/180.*orb); |
500 |
VSUM(nv.vp, qtL.wp[li], nv.vdir, -1.); |
501 |
} else if (mov) { /* move forward/backward */ |
502 |
d = MOVPCT/100. * mov; |
503 |
VSUM(nv.vp, nv.vp, nv.vdir, d); |
504 |
} |
505 |
if (!mov ^ !orb && headlocked) { /* restore head height */ |
506 |
VSUM(v1, odev.v.vp, nv.vp, -1.); |
507 |
d = DOT(v1, odev.v.vup); |
508 |
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
509 |
} |
510 |
if (setview(&nv) != NULL) |
511 |
return(0); /* illegal view */ |
512 |
dev_view(&nv); |
513 |
inpresflags |= DEV_NEWVIEW; |
514 |
return(1); |
515 |
} |
516 |
|
517 |
|
518 |
static |
519 |
getmove(ebut) /* get view change */ |
520 |
XButtonPressedEvent *ebut; |
521 |
{ |
522 |
int movdir = MOVDIR(ebut->button); |
523 |
int movorb = MOVORB(ebut->state); |
524 |
int oldnodesiz = qtMinNodesiz; |
525 |
Window rootw, childw; |
526 |
int rootx, rooty, wx, wy; |
527 |
unsigned int statemask; |
528 |
|
529 |
qtMinNodesiz = 16; /* for quicker update */ |
530 |
XNoOp(ourdisplay); |
531 |
|
532 |
while (!XCheckMaskEvent(ourdisplay, |
533 |
ButtonReleaseMask, levptr(XEvent))) { |
534 |
|
535 |
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
536 |
&rootx, &rooty, &wx, &wy, &statemask)) |
537 |
break; /* on another screen */ |
538 |
|
539 |
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) { |
540 |
sleep(1); |
541 |
continue; |
542 |
} |
543 |
XClearWindow(ourdisplay, gwind); |
544 |
qtUpdate(); |
545 |
draw_grids(); |
546 |
} |
547 |
if (!(inpresflags & DEV_NEWVIEW)) { /* do final motion */ |
548 |
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
549 |
wx = levptr(XButtonReleasedEvent)->x; |
550 |
wy = levptr(XButtonReleasedEvent)->y; |
551 |
moveview(wx, odev.vres-1-wy, movdir, movorb); |
552 |
} |
553 |
dev_flush(); |
554 |
|
555 |
qtMinNodesiz = oldnodesiz; /* restore quadtree resolution */ |
556 |
} |
557 |
|
558 |
|
559 |
static |
560 |
getkey(ekey) /* get input key */ |
561 |
register XKeyPressedEvent *ekey; |
562 |
{ |
563 |
int n; |
564 |
char buf[8]; |
565 |
|
566 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
567 |
if (n != 1) |
568 |
return; |
569 |
switch (buf[0]) { |
570 |
case 'h': /* turn on height motion lock */ |
571 |
headlocked = 1; |
572 |
return; |
573 |
case 'H': /* turn off height motion lock */ |
574 |
headlocked = 0; |
575 |
return; |
576 |
case 'l': /* retrieve last view */ |
577 |
inpresflags |= DEV_LASTVIEW; |
578 |
return; |
579 |
case CTRL('S'): |
580 |
case 'p': /* pause computation */ |
581 |
inpresflags |= DEV_WAIT; |
582 |
return; |
583 |
case 'v': /* spit out view */ |
584 |
inpresflags |= DEV_PUTVIEW; |
585 |
return; |
586 |
case CTRL('Q'): |
587 |
case '\n': |
588 |
case '\r': /* resume computation */ |
589 |
inpresflags |= DEV_RESUME; |
590 |
return; |
591 |
case CTRL('R'): /* redraw screen */ |
592 |
if (ncolors > 0) |
593 |
new_ctab(ncolors); |
594 |
qtRedraw(0, 0, odev.hres, odev.vres); |
595 |
return; |
596 |
case CTRL('L'): /* refresh from server */ |
597 |
if (inpresflags & DEV_REDRAW) |
598 |
return; |
599 |
XClearWindow(ourdisplay, gwind); |
600 |
draw_grids(); |
601 |
XFlush(ourdisplay); |
602 |
qtCompost(100); /* unload the old tree */ |
603 |
if (ncolors > 0) |
604 |
new_ctab(ncolors); |
605 |
inpresflags |= DEV_REDRAW; /* resend values from server */ |
606 |
return; |
607 |
case CTRL('D'): |
608 |
case 'Q': |
609 |
case 'q': /* quit the program */ |
610 |
inpresflags |= DEV_SHUTDOWN; |
611 |
return; |
612 |
default: |
613 |
XBell(ourdisplay, 0); |
614 |
return; |
615 |
} |
616 |
} |
617 |
|
618 |
|
619 |
static |
620 |
fixwindow(eexp) /* repair damage to window */ |
621 |
register XExposeEvent *eexp; |
622 |
{ |
623 |
if (odev.hres == 0 || odev.vres == 0) { /* first exposure */ |
624 |
odev.hres = eexp->width; |
625 |
odev.vres = eexp->height; |
626 |
inpresflags |= DEV_NEWSIZE; |
627 |
} |
628 |
qtRedraw(eexp->x, odev.vres - eexp->y - eexp->height, |
629 |
eexp->x + eexp->width, odev.vres - eexp->y); |
630 |
} |
631 |
|
632 |
|
633 |
static |
634 |
resizewindow(ersz) /* resize window */ |
635 |
register XConfigureEvent *ersz; |
636 |
{ |
637 |
if (ersz->width == odev.hres && ersz->height == odev.vres) |
638 |
return; |
639 |
|
640 |
odev.hres = ersz->width; |
641 |
odev.vres = ersz->height; |
642 |
|
643 |
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
644 |
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
645 |
|
646 |
inpresflags |= DEV_NEWSIZE|DEV_NEWVIEW; |
647 |
} |