src/ngmx/x11.c

   1 /*
   2  *
   3  *                This source code is part of
   4  *
   5  *                 G   R   O   M   A   C   S
   6  *
   7  *          GROningen MAchine for Chemical Simulations
   8  *
   9  *                        VERSION 3.2.0
  10  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  11  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  12  * Copyright (c) 2001-2004, The GROMACS development team,
  13  * check out http://www.gromacs.org for more information.
  14
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
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  26  *
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  34  */
  35 #ifdef HAVE_CONFIG_H
  36 #include <config.h>
  37 #endif
  38
  39 #include "typedefs.h"
  40 #include <Xstuff.h>
  41 #include <x11.h>
  42 #include "sysstuff.h"
  43 #include "string.h"
  44 #include "smalloc.h"
  45 #include "string2.h"
  46
  47 /* These colours will be mapped to black on a monochrome screen */
  48 unsigned long BLACK,BLUE,GREEN,CYAN,RED,BROWN,GREY,DARKGREY;
  49
  50 /* These colours will be mapped to white on a monochrome screen */
  51 unsigned long LIGHTBLUE,LIGHTGREEN,LIGHTGREY,LIGHTCYAN,LIGHTRED,VIOLET,YELLOW,WHITE;
  52
  53 static XFontStruct *XLQF(FILE *err, Display *disp, const char *name)
  54 {
  55   XFontStruct *font=XLoadQueryFont(disp,name);
  56 #ifdef DEBUG
  57   if (font != NULL)
  58     fprintf(err, "Loaded font %s\n",name);
  59 #endif
  60   return font;
  61 }
  62
  63 static XFontStruct *GetFont(FILE *err, Display *disp, char *name)
  64 {
  65   static const char *fontnames[] = {
  66     "sansb12","8x13bold","8x13",
  67     "9x15","6x13","fixed"
  68     };
  69 #define MAXNAMES (sizeof(fontnames)/sizeof(fontnames[0]))
  70   int i;
  71   XFontStruct *font;
  72   int count;
  73   char **fontlist;
  74   bool bFont = FALSE;
  75
  76   if (name)
  77     bFont=(bool) ((font=XLQF(err,disp,name))!=NULL);
  78   else
  79     font=NULL;
  80
  81   for (i=0; (!bFont && (i<MAXNAMES)); i++)
  82     bFont=(bool) ((font=XLQF(err,disp,fontnames[i]))!=NULL);
  83
  84   if (!bFont) {
  85     fontlist=XListFonts(disp,"?",1,&count);
  86     if (count!=0)
  87       bFont=(bool) ((font=XLQF(err,disp,fontlist[0]))!=NULL);
  88   }
  89   if (!bFont)
  90     fprintf (err, "Cannot load any suitable font\n");
  91   return font;
  92 }
  93
  94 static GC GetGC(Display *disp, XFontStruct *font)
  95 {
  96   XGCValues     values;
  97
  98   values.font = font->fid;
  99   values.foreground = WhitePixel(disp,DefaultScreen(disp));
 100
 101   return XCreateGC(disp,DefaultRootWindow(disp),GCForeground|GCFont,&values);
 102 }
 103
 104 void GetNamedColor(t_x11 *x11,const char *name,unsigned long *col)
 105 {
 106   /* If name is found than col set to that colour else col is unchanged */
 107   XColor exact,clr;
 108
 109   if (XAllocNamedColor(x11->disp,x11->cmap,name,&clr,&exact))
 110     *col=clr.pixel;
 111   else
 112     fprintf(x11->console,"No colour %s\n",name);
 113 }
 114
 115 static t_wlist *GetWList(t_x11 *x11, Window w)
 116 {
 117   t_wlist *curs;
 118
 119   curs=x11->wlist;
 120   while (curs && (curs->w != w))
 121     curs=curs->next;
 122
 123   return curs;
 124 }
 125
 126 typedef struct {
 127   Window w;
 128   bool   b;
 129 } t_peek;
 130
 131 static Bool TestEvent(Display *disp,XEvent *event,char *arg)
 132 {
 133   t_peek *tp;
 134
 135   fprintf(stderr,"TestEvent\n");
 136   tp=(t_peek *)arg;
 137   if ((event->xany.window==tp->w) && (event->type==ConfigureNotify)) {
 138     tp->b=TRUE;
 139     return True;
 140   }
 141   return False;
 142 }
 143
 144 static void MainLoop(t_x11 *x11)
 145 {
 146   bool    bReturn;
 147   XEvent  event;
 148   t_wlist *curs;
 149   Window  w;
 150
 151   for (bReturn=FALSE; (!bReturn); ) {
 152     if (x11->wlist) {
 153       XNextEvent(x11->disp,&event);
 154       w=event.xany.window;
 155       curs=GetWList(x11,w);
 156       if (!curs)
 157         bReturn=TRUE;
 158       if (!bReturn) {
 159         switch (event.type) {
 160         case Expose:
 161           /* Filter out expose events with non-zero count field */
 162           if (event.xexpose.count != 0)
 163             curs=NULL;
 164           break;
 165         case ConfigureNotify:
 166           /* Check if more are coming...
 167           if (XCheckTypedWindowEvent(x11->disp,w,ConfigureNotify,&config))
 168             curs=NULL; */
 169           break;
 170         default:
 171           break;
 172         }
 173         if (curs)
 174           bReturn=(*curs->cb)(x11,&event,w,curs->data);
 175       }
 176     }
 177   }
 178 }
 179
 180 static void RegisterCallback(t_x11 *x11,Window w,Window Parent,
 181                              CallBack cb, void *data)
 182 {
 183   t_wlist *curs,*item;
 184
 185   snew(item,1);
 186   item->w=w;
 187   item->Parent=Parent;
 188   item->cb=cb;
 189   item->mask=0;
 190   item->data=data;
 191   item->next=NULL;
 192
 193   if (x11->wlist) {
 194     curs=x11->wlist;
 195     while(curs->next)
 196       curs=curs->next;
 197     curs->next=item;
 198   }
 199   else
 200     x11->wlist=item;
 201 }
 202
 203 static void UnRegisterCallback(t_x11 *x11, Window w)
 204 {
 205   t_wlist *curs;
 206
 207   curs=x11->wlist;
 208   if (curs) {
 209     if (curs->w==w) {
 210       x11->wlist=curs->next;
 211       sfree(curs);
 212     }
 213     else {
 214       while (curs->next && (curs->next->w != w))
 215         curs=curs->next;
 216       if (curs->next) {
 217         t_wlist *tmp=curs->next;
 218
 219         curs->next=curs->next->next;
 220         sfree(tmp);
 221       }
 222     }
 223   }
 224 }
 225
 226 static void SetInputMask(t_x11 *x11, Window w, unsigned long mask)
 227 {
 228   t_wlist *curs;
 229
 230   curs=GetWList(x11,w);
 231   if (curs) {
 232     curs->mask=mask;
 233     XSelectInput(x11->disp,w,(long)mask);
 234   }
 235   else
 236     fprintf(x11->console,"No such window (%d)\n",(int)w);
 237 }
 238
 239 static unsigned long GetInputMask(t_x11 *x11, Window w)
 240 {
 241   t_wlist *curs;
 242
 243   curs=GetWList(x11,w);
 244   if (curs)
 245     return curs->mask;
 246   else
 247     return 0;
 248 }
 249
 250 static void CleanUp(t_x11 *x11)
 251 {
 252   t_wlist *curs;
 253
 254   curs=x11->wlist;
 255   while (curs) {
 256     x11->wlist=curs->next;
 257     XDestroyWindow(x11->disp,curs->w);
 258     sfree(curs);
 259     curs=x11->wlist;
 260   }
 261   XCloseDisplay(x11->disp);
 262 }
 263
 264 static void Xrm(int *argc, char *argv[])
 265 {
 266   /*
 267   static XrmOptionDescRec opTable[] = {
 268     {"-background",   "*background",
 269        XrmoptionSepArg, (caddr_t) NULL},
 270     {"-bd",           "*borderColor",
 271        XrmoptionSepArg, (caddr_t) NULL},
 272     {"-bg",           "*background",
 273        XrmoptionSepArg, (caddr_t) NULL},
 274     {"-borderwidth",  "*TopLevelShell.borderwidth",
 275        XrmoptionSepArg, (caddr_t) NULL},
 276     {"-bordercolor",   "*borderColor",
 277        XrmoptionSepArg, (caddr_t) NULL},
 278     {"-bw",            "*TopLevelShell.borderColor",
 279        XrmoptionSepArg, (caddr_t) NULL},
 280     {"-display",       ".display",
 281        XrmoptionSepArg, (caddr_t) NULL},
 282     {"-fg",            "*foreground",
 283        XrmoptionSepArg, (caddr_t) NULL},
 284     {"-fn",            "*font",
 285        XrmoptionSepArg, (caddr_t) NULL},
 286     {"-font",          "*font",
 287        XrmoptionSepArg, (caddr_t) NULL},
 288     {"-foreground",    "*foreground",
 289        XrmoptionSepArg, (caddr_t) NULL},
 290     {"-geometry",      ".TopLevelShell.geometry",
 291        XrmoptionSepArg, (caddr_t) NULL},
 292     {"-iconic",        ".TopLevelShell.iconic",
 293        XrmoptionNoArg,  (caddr_t) "on"},
 294     {"-name",          ".name",
 295        XrmoptionSepArg, (caddr_t) NULL},
 296     {"-reverse",       "*reverseVideo",
 297        XrmoptionNoArg,  (caddr_t) "on"},
 298     {"-rv",            "*reverseVideo",
 299        XrmoptionNoArg,  (caddr_t) "on"},
 300     {"-synchronous",   ".synchronous",
 301        XrmoptionNoArg,  (caddr_t) "on"},
 302     {"-title",         ".TopLevelShell.title",
 303        XrmoptionSepArg, (caddr_t) NULL},
 304     {"-xrm",            NULL,
 305        XrmoptionSepArg, (caddr_t) NULL},
 306   };
 307 #define TABLELENGTH (sizeof(opTable)/sizeof(opTable[0]))
 308   XrmInitialize();*/
 309 }
 310
 311 static void Flush(t_x11 *x11)
 312 {
 313   fflush(x11->console);
 314 }
 315
 316 t_x11 *GetX11(int *argc, char *argv[])
 317 {
 318   static const char *v_name[] = {
 319     "DirectColor","TrueColor", "PseudoColor",
 320     "StaticColor","GrayScale", "StaticGray"
 321     };
 322   static int v_class[] = {
 323     DirectColor,TrueColor, PseudoColor,
 324     StaticColor,GrayScale, StaticGray
 325     };
 326 #define NCLASS (sizeof(v_class)/sizeof(v_class[0]))
 327
 328   XVisualInfo v_info;
 329   t_x11       *x11;
 330   int         ARGC;
 331   char        **ARGV;
 332   char        *display;
 333   char        *fontname;
 334   char        *title,*FG=NULL,*BG=NULL;
 335   bool        bVerbose=FALSE;
 336   int         i;
 337
 338   title=strdup(argv[0]);
 339
 340   /* First check environment */
 341   fontname=getenv("GMXFONT");
 342   display=getenv("DISPLAY");
 343
 344   snew(ARGV,*argc);
 345   ARGC=1;
 346   for(i=1; (i < *argc); i++) {
 347     if (argv[i][0]=='-') {
 348       if (strlen(argv[i]) > 1) {
 349         if ((*argc)>i+1)
 350           switch(argv[i][1]) {
 351           case 'b':
 352             BG=argv[++i];
 353             break;
 354           case 'd':
 355             display=argv[++i];
 356             break;
 357           case 'f':
 358             switch(argv[i][2]) {
 359             case 'o':
 360               fontname=argv[++i];
 361               break;
 362             case 'g':
 363               FG=argv[++i];
 364               break;
 365             }
 366             break;
 367           case 't':
 368             sfree(title);
 369             title=strdup(argv[++i]);
 370             break;
 371           case 'v':
 372             bVerbose=TRUE;
 373             break;
 374           default:
 375             ARGV[ARGC++]=argv[i];
 376             break;
 377           }
 378       }
 379     }
 380     else
 381       ARGV[ARGC++]=argv[i];
 382   }
 383   for (i=1; (i<ARGC); i++)
 384     argv[i]=ARGV[i];
 385   *argc=ARGC;
 386   argv[ARGC]=NULL;
 387
 388   snew(x11,1);
 389   x11->dispname=display;
 390   if (bVerbose)
 391     x11->console=stderr;
 392   else
 393     if ((x11->console=fopen("/dev/null","w"))== NULL)
 394       x11->console=stderr;
 395
 396   if ((x11->disp=XOpenDisplay(display))==NULL) {
 397     if (bVerbose)
 398       fprintf(x11->console,"Display %s invalid\n",display);
 399     return NULL;
 400   }
 401
 402   if ((x11->font=GetFont(x11->console,x11->disp,fontname))==NULL)
 403     return NULL;
 404   if ((x11->gc=GetGC(x11->disp,x11->font))==NULL)
 405     return NULL;
 406
 407   x11->root=DefaultRootWindow(x11->disp);
 408   x11->screen=DefaultScreen(x11->disp);
 409   x11->depth=DefaultDepth(x11->disp,x11->screen);
 410   x11->cmap=DefaultColormap(x11->disp,x11->screen);
 411
 412   /* These colours will be mapped to black on a monochrome screen */
 413   x11->fg=BLACK=BLUE=GREEN=CYAN=RED=BROWN=GREY=DARKGREY=
 414     BlackPixel(x11->disp,x11->screen);
 415
 416   /* These colours will be mapped to white on a monochrome screen */
 417   x11->bg=
 418     LIGHTBLUE=LIGHTGREY=LIGHTGREEN=LIGHTCYAN=LIGHTRED=VIOLET=YELLOW=WHITE=
 419       WhitePixel(x11->disp,x11->screen);
 420
 421   if (x11->depth > 1) {
 422     /* Not B & W, Look what kind of screen we've got... */
 423     for (i=0; (i < NCLASS); i++)
 424       if (!XMatchVisualInfo(x11->disp,x11->screen,x11->depth,
 425                             v_class[i],&v_info))
 426         break;
 427     if ((i==4) || (i==5))
 428       fprintf(x11->console,"Greyscale screen, using B & W only\n");
 429     else {
 430       /* We have real color! */
 431       fprintf(x11->console,"%s screen with depth %d.\n",
 432              (i==NCLASS)?"Unknown":v_name[i],x11->depth);
 433       GetNamedColor(x11,"midnight blue",&BLUE);
 434       GetNamedColor(x11,"DarkGreen",&GREEN);
 435       GetNamedColor(x11,"SeaGreen",&CYAN);
 436       GetNamedColor(x11,"red4",&RED);
 437       GetNamedColor(x11,"Gray",&GREY);
 438       GetNamedColor(x11,"Gray",&DARKGREY);
 439       GetNamedColor(x11,"LightGray",&LIGHTGREY);
 440       GetNamedColor(x11,"green",&LIGHTGREEN);
 441       GetNamedColor(x11,"cyan",&LIGHTCYAN);
 442       GetNamedColor(x11,"tomato1",&LIGHTRED);
 443       GetNamedColor(x11,"violet",&VIOLET);
 444       GetNamedColor(x11,"yellow",&YELLOW);
 445       GetNamedColor(x11,"brown",&BROWN);
 446       GetNamedColor(x11,"CornFlowerBlue",&LIGHTBLUE);
 447     }
 448   }
 449   else
 450     fprintf(x11->console,"Monochrome screen.\n");
 451
 452   /* We should use Xrm here... */
 453   if (FG)
 454     GetNamedColor(x11,FG,&(x11->fg));
 455   else
 456     x11->fg=BLACK;
 457   if (BG)
 458     GetNamedColor(x11,BG,&(x11->bg));
 459   else
 460     x11->bg=LIGHTGREY;
 461   x11->title=strdup(title);
 462   sfree(title);
 463   x11->wlist=NULL;
 464   x11->GetNamedColor=&GetNamedColor;
 465   x11->MainLoop=&MainLoop;
 466   x11->RegisterCallback=&RegisterCallback;
 467   x11->UnRegisterCallback=&UnRegisterCallback;
 468   x11->SetInputMask=&SetInputMask;
 469   x11->GetInputMask=&GetInputMask;
 470   x11->CleanUp=&CleanUp;
 471   x11->Flush=&Flush;
 472
 473   x11->Flush(x11);
 474
 475   return x11;
 476 }
 477