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Diff for /OpenXM_contrib2/asir2000/plot/ox_plot_xevent.c between version 1.1 and 1.26

version 1.1, 1999/12/03 07:39:13 version 1.26, 2005/07/03 13:11:28
Line 1 
Line 1 
 /* $OpenXM: OpenXM/src/asir99/plot/ox_plot_xevent.c,v 1.1.1.1 1999/11/10 08:12:34 noro Exp $ */  /*
    * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED
    * All rights reserved.
    *
    * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
    * non-exclusive and royalty-free license to use, copy, modify and
    * redistribute, solely for non-commercial and non-profit purposes, the
    * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
    * conditions of this Agreement. For the avoidance of doubt, you acquire
    * only a limited right to use the SOFTWARE hereunder, and FLL or any
    * third party developer retains all rights, including but not limited to
    * copyrights, in and to the SOFTWARE.
    *
    * (1) FLL does not grant you a license in any way for commercial
    * purposes. You may use the SOFTWARE only for non-commercial and
    * non-profit purposes only, such as academic, research and internal
    * business use.
    * (2) The SOFTWARE is protected by the Copyright Law of Japan and
    * international copyright treaties. If you make copies of the SOFTWARE,
    * with or without modification, as permitted hereunder, you shall affix
    * to all such copies of the SOFTWARE the above copyright notice.
    * (3) An explicit reference to this SOFTWARE and its copyright owner
    * shall be made on your publication or presentation in any form of the
    * results obtained by use of the SOFTWARE.
    * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
    * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
    * for such modification or the source code of the modified part of the
    * SOFTWARE.
    *
    * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
    * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
    * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
    * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
    * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
    * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
    * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
    * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
    * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
    * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
    * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
    * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
    * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
    * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
    * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
    * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
    * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
    *
    * $OpenXM: OpenXM_contrib2/asir2000/plot/ox_plot_xevent.c,v 1.25 2005/05/18 03:27:00 noro Exp $
   */
 #include "ca.h"  #include "ca.h"
 #include "parse.h"  #include "parse.h"
 #include "ox.h"  #include "ox.h"
 #include "ifplot.h"  #include "ifplot.h"
 #include "cursor.h"  #include "cursor.h"
   #include <X11/Xaw/MenuButton.h>
   #include <X11/Xaw/Paned.h>
   
   static void Quit();
   static void print_canvas(Widget w, struct canvas *can, XtPointer calldata);
   static void output_to_printer(Widget w, struct canvas *can, XtPointer calldata);
   static void print_canvas_to_file(Widget w, struct canvas *can, XtPointer calldata);
   static void printing_method(Widget w, struct canvas *can, XtPointer calldata);
   
   static Atom wm_delete_window;
   
   void SetWM_Proto(Widget w)
   {
           XtOverrideTranslations(w,
                   XtParseTranslationTable("<Message>WM_PROTOCOLS: quit()"));
           XSetWMProtocols(display,XtWindow(w),&wm_delete_window,1);
   }
   
   static void quit(Widget w, XEvent *ev, String *params,Cardinal *nparams)
   {
       XBell(display,0);
   }
   
   /* XXX : these lines are in plotg.c, but ld says they are not defined */
   #if __DARWIN__
   int stream;
   
   DISPLAY *display;
   CURSOR normalcur,runningcur,errorcur;
   
   #if defined(VISUAL)
   POINT start_point, end_point;
   SIZE cansize;
   #else
   Window rootwin;
   GC drawGC,dashGC,hlGC,scaleGC,clearGC,xorGC,colorGC,cdrawGC;
   XFontStruct *sffs;
   #endif
   
   struct canvas *canvas[MAXCANVAS];
   struct canvas *closed_canvas[MAXCANVAS];
   struct canvas *current_can;
   #endif /* __DARWIN__ */
   
 #ifdef ABS  #ifdef ABS
 #undef ABS  #undef ABS
 #define ABS(a) ((a)>0?(a):-(a))  #define ABS(a) ((a)>0?(a):-(a))
 #endif  #endif
   
 static char *dname;  static char *dname;
 static int remotes;  
 static int depth,scrn;  static int depth,scrn;
   
 extern jmp_buf ox_env;  extern JMP_BUF ox_env;
 static Widget toplevel;  static Widget toplevel;
 static XtAppContext app_con;  static XtAppContext app_con;
   
Line 24  static struct PlotResources {
Line 114  static struct PlotResources {
         Pixel ForePixel,BackPixel,DashPixel;          Pixel ForePixel,BackPixel,DashPixel;
         char *ForeName,*BackName,*DashName;          char *ForeName,*BackName,*DashName;
         Boolean Reverse;          Boolean Reverse;
           Boolean UpsideDown;
 } PlotResources;  } PlotResources;
   
 #define forePixel PlotResources.ForePixel  #define forePixel PlotResources.ForePixel
Line 33  static struct PlotResources {
Line 124  static struct PlotResources {
 #define backName PlotResources.BackName  #define backName PlotResources.BackName
 #define dashName PlotResources.DashName  #define dashName PlotResources.DashName
 #define reverse PlotResources.Reverse  #define reverse PlotResources.Reverse
   #define upsidedown PlotResources.UpsideDown
   
 Cursor create_cursor();  Cursor create_cursor();
   
Line 99  XButtonEvent *ev;
Line 191  XButtonEvent *ev;
                 case Button1:                  case Button1:
                         e.x = ev->x; e.y = ev->y;                          e.x = ev->x; e.y = ev->y;
                         draw_frame0(can->window,spos,e);                          draw_frame0(can->window,spos,e);
                         if ( !busy ) {                          if ( !busy
                           && can->mode != MODE_INTERACTIVE
                           && can->mode != MODE_POLARPLOT) {
                                 if ( can->mode == MODE_PLOT )                                  if ( can->mode == MODE_PLOT )
                                         plot_resize(can,spos,e);                                          plot_resize(can,spos,e);
                                 else                                  else
Line 287  search_active_canvas()
Line 381  search_active_canvas()
         return -1;          return -1;
 }  }
   
   void popup_canvas(index)
   {
           clear_pixmap(canvas[index]);
           XtPopup(canvas[index]->shell,XtGrabNone);
           copy_to_canvas(canvas[index]);
   }
   
 void destroy_canvas(w,can,calldata)  void destroy_canvas(w,can,calldata)
 Widget w;  Widget w;
 struct canvas *can;  struct canvas *can;
 XtPointer calldata;  XtPointer calldata;
 {  {
         XtPopdown(can->shell);          XtPopdown(can->shell);
         XtDestroyWidget(can->shell);  /*      XtDestroyWidget(can->shell); */
         XFlush(display);          XFlush(display);
         if ( can == current_can ) {          if ( can == current_can ) {
                 reset_busy(can); current_can = 0;                  reset_busy(can); current_can = 0;
         }          }
           if ( closed_canvas[can->index] )
                   XtDestroyWidget(closed_canvas[can->index]->shell);
           closed_canvas[can->index] = can;
         canvas[can->index] = 0;          canvas[can->index] = 0;
 }  }
   
Line 406  char *s;
Line 510  char *s;
         create_popup(can->shell,"warning",s,&warnshell,&warndialog);          create_popup(can->shell,"warning",s,&warnshell,&warndialog);
         XawDialogAddButton(warndialog,"dismiss",popdown_warning,warnshell);          XawDialogAddButton(warndialog,"dismiss",popdown_warning,warnshell);
         XtPopup(warnshell,XtGrabNone);          XtPopup(warnshell,XtGrabNone);
           SetWM_Proto(warnshell);
 }  }
   
 void popdown_warning(w,client,call)  void popdown_warning(w,client,call)
Line 428  XtPointer calldata;
Line 533  XtPointer calldata;
         create_popup(can->shell,"formula",buf,&fshell,&fdialog);          create_popup(can->shell,"formula",buf,&fshell,&fdialog);
         XawDialogAddButton(fdialog,"dismiss",popdown_formula,w);          XawDialogAddButton(fdialog,"dismiss",popdown_formula,w);
         XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);          XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);
           SetWM_Proto(fshell);
 }  }
   
 void popdown_formula(w,fbutton,call)  void popdown_formula(w,fbutton,call)
Line 446  struct canvas *can;
Line 552  struct canvas *can;
 {  {
         XEvent event;          XEvent event;
         Widget box,frame,commands,          Widget box,frame,commands,
                 coords,quit,wide,precise,canvas,formula;                  coords,quit,print,wide,precise,canvas,formula;
         Window window;          Window window;
         Pixmap pix;          Pixmap pix;
         int i,width,height;          int i,width,height;
Line 455  struct canvas *can;
Line 561  struct canvas *can;
   
         width = can->width; height = can->height;          width = can->width; height = can->height;
   
         sprintf(buf,"%s : %d/%d", can->wname?can->wname:"Plot",          sprintf(buf,"%s : %d", can->wname?can->wname:"Plot",can->index);
                 remotes,can->index);  
         XtSetArg(arg[0],XtNiconName,buf);          XtSetArg(arg[0],XtNiconName,buf);
         can->shell =          can->shell =
                 XtCreatePopupShell("shell",topLevelShellWidgetClass,toplevel,arg,1);                  XtCreatePopupShell("shell",topLevelShellWidgetClass,toplevel,arg,1);
Line 474  struct canvas *can;
Line 579  struct canvas *can;
   
         quit = XtCreateManagedWidget("quit",commandWidgetClass,commands,NULL,0);          quit = XtCreateManagedWidget("quit",commandWidgetClass,commands,NULL,0);
         XtAddCallback(quit,XtNcallback,destroy_canvas,can);          XtAddCallback(quit,XtNcallback,destroy_canvas,can);
           print = XtCreateManagedWidget("print",commandWidgetClass,commands,NULL,0);
           XtAddCallback(print,XtNcallback,print_canvas,can);
         can->wideb = wide =          can->wideb = wide =
                 XtCreateManagedWidget("wide",toggleWidgetClass,commands,NULL,0);                  XtCreateManagedWidget("wide",toggleWidgetClass,commands,NULL,0);
         XtAddCallback(wide,XtNcallback,wide_canvas,can);          XtAddCallback(wide,XtNcallback,wide_canvas,can);
Line 546  struct canvas *can;
Line 653  struct canvas *can;
         if ( can->mode != MODE_IFPLOT || !qpcheck((Obj)can->formula) )          if ( can->mode != MODE_IFPLOT || !qpcheck((Obj)can->formula) )
                 XtSetSensitive(precise,False);                  XtSetSensitive(precise,False);
         XtPopup(can->shell,XtGrabNone);          XtPopup(can->shell,XtGrabNone);
           SetWM_Proto(can->shell);
         window = can->window = XtWindow(canvas);          window = can->window = XtWindow(canvas);
         pix = can->pix = XCreatePixmap(display,window,width,height,depth);          pix = can->pix = XCreatePixmap(display,window,width,height,depth);
         XFillRectangle(display,pix,clearGC,0,0,width,height);          XFillRectangle(display,pix,clearGC,0,0,width,height);
Line 564  struct canvas *can;
Line 671  struct canvas *can;
 }  }
   
 static XrmOptionDescRec options[] = {  static XrmOptionDescRec options[] = {
   {"-upsidedown","*upsidedown",XrmoptionNoArg,"on"},
 {"-reverse","*reverse",XrmoptionNoArg,"on"},  {"-reverse","*reverse",XrmoptionNoArg,"on"},
 {"-fg","*foreground",XrmoptionSepArg,NULL},  {"-fg","*foreground",XrmoptionSepArg,NULL},
 {"-bg","*background",XrmoptionSepArg,NULL},  {"-bg","*background",XrmoptionSepArg,NULL},
Line 572  static XrmOptionDescRec options[] = {
Line 680  static XrmOptionDescRec options[] = {
 #define offset(name) XtOffset(struct PlotResources *,name)  #define offset(name) XtOffset(struct PlotResources *,name)
   
 static XtResource resources[] = {  static XtResource resources[] = {
   {"upsidedown","UpsideDown",XtRBoolean,sizeof(Boolean),
           offset(UpsideDown),XtRBoolean,&upsidedown},
 {"reverse","Reverse",XtRBoolean,sizeof(Boolean),  {"reverse","Reverse",XtRBoolean,sizeof(Boolean),
         offset(Reverse),XtRBoolean,&reverse},          offset(Reverse),XtRBoolean,&reverse},
 {"foreground","Foreground",XtRString,sizeof(char *),  {"foreground","Foreground",XtRString,sizeof(char *),
Line 588  static XtResource resources[] = {
Line 698  static XtResource resources[] = {
         offset(DashPixel),XtRPixel,(XtPointer)&dashPixel},          offset(DashPixel),XtRPixel,(XtPointer)&dashPixel},
 };  };
   
 init_plot_display(argc,argv)  static XtActionsRec actions_table[] = {
           {"quit",Quit},
   };
   
   static void Quit(Widget w, XEvent *ev, String *params,Cardinal *nparams)
   {
       XBell(XtDisplay(w),0);
   }
   
   int init_plot_display(argc,argv)
 int argc;  int argc;
 char **argv;  char **argv;
 {  {
Line 597  char **argv;
Line 716  char **argv;
         unsigned int tmp;          unsigned int tmp;
   
         for ( ac = argc, av = argv; ac; ac--, av++ )          for ( ac = argc, av = argv; ac; ac--, av++ )
                 if ( index(*av,':') )                  if ( !strcmp(*av,"nox") )
                           return 0;
                   else if ( index(*av,':') )
                         dname = *av;                          dname = *av;
         XtToolkitInitialize();          XtToolkitInitialize();
         app_con = XtCreateApplicationContext();          app_con = XtCreateApplicationContext();
           XtAppAddActions(app_con,actions_table, XtNumber(actions_table));
         display = XtOpenDisplay(app_con,dname,"plot","Plot",          display = XtOpenDisplay(app_con,dname,"plot","Plot",
                 options,XtNumber(options),&argc,argv);                  options,XtNumber(options),&argc,argv);
         if ( !display ) {          if ( !display ) {
                 fprintf(stderr,"Can't open display\n");                  fprintf(stderr,"Can't open display\n");
                 exit(1);                  return 0;
         }          }
         toplevel = XtAppCreateShell(0,"Plot",applicationShellWidgetClass,          toplevel = XtAppCreateShell(0,"Plot",applicationShellWidgetClass,
                 display,0,0);                  display,0,0);
Line 619  char **argv;
Line 741  char **argv;
         depth = DefaultDepth(display,scrn);          depth = DefaultDepth(display,scrn);
         rootwin = RootWindow(display,scrn);          rootwin = RootWindow(display,scrn);
   
           /* for handling DELETE message */
           wm_delete_window = XInternAtom(display,"WM_DELETE_WINDOW",False);
           XtOverrideTranslations(toplevel,
                   XtParseTranslationTable("<Message>WM_PROTOCOLS: quit()"));
   
         if ( reverse ) {          if ( reverse ) {
                 tmp = forePixel; forePixel = backPixel; backPixel = tmp;                  tmp = forePixel; forePixel = backPixel; backPixel = tmp;
         }          }
Line 626  char **argv;
Line 753  char **argv;
         create_gc();          create_gc();
         create_font();          create_font();
         create_cursors();          create_cursors();
           return 1;
 }  }
   
 static char *scalefont = "*-8-80-*";  static char *scalefont = "*-8-80-*";
Line 649  create_gc() {
Line 777  create_gc() {
         scaleGC = XCreateGC(display,rootwin,0,NULL);          scaleGC = XCreateGC(display,rootwin,0,NULL);
         xorGC = XCreateGC(display,rootwin,0,NULL);          xorGC = XCreateGC(display,rootwin,0,NULL);
         colorGC = XCreateGC(display,rootwin,0,NULL);          colorGC = XCreateGC(display,rootwin,0,NULL);
           cdrawGC = XCreateGC(display,rootwin,0,NULL);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,drawGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,drawGC);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,dashGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,dashGC);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,clearGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,clearGC);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,scaleGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,scaleGC);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,xorGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,xorGC);
         XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,colorGC);          XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,colorGC);
           XCopyGC(display,DefaultGC(display,scrn),(1L<<(GCLastBit+1))-1,cdrawGC);
         XSetForeground(display,drawGC,forePixel);          XSetForeground(display,drawGC,forePixel);
         XSetForeground(display,scaleGC,forePixel);          XSetForeground(display,scaleGC,forePixel);
         XSetForeground(display,clearGC,backPixel);          XSetForeground(display,clearGC,backPixel);
Line 671  create_gc() {
Line 801  create_gc() {
         XSetForeground(display,colorGC,color.pixel);          XSetForeground(display,colorGC,color.pixel);
 }  }
   
   set_drawcolor(c)
   unsigned int c;
   {
           XColor color = {0,0x0,0x0,0x0,DoRed|DoGreen|DoBlue,0};
   
           color.red = (c&0xff0000)>>8;
           color.green = (c&0xff00);
           color.blue = (c&0xff)<<8;
           XAllocColor(display,DefaultColormap(display,scrn),&color);
           XSetForeground(display,cdrawGC,color.pixel);
   }
   
 create_cursors() {  create_cursors() {
         static XColor fg = {0, 0x0, 0x0, 0x0,DoRed|DoGreen|DoBlue,0};          static XColor fg = {0, 0x0, 0x0, 0x0,DoRed|DoGreen|DoBlue,0};
         static XColor bg = {0, 0xffff, 0xffff, 0xffff,DoRed|DoGreen|DoBlue,0};          static XColor bg = {0, 0xffff, 0xffff, 0xffff,DoRed|DoGreen|DoBlue,0};
Line 701  copy_to_canvas(can)
Line 843  copy_to_canvas(can)
 struct canvas *can;  struct canvas *can;
 {  {
         if ( display ) {          if ( display ) {
                 XCopyArea(display,can->pix,can->window,                  if ( can->color ) {
                         drawGC,0,0,can->width,can->height,0,0);                          set_drawcolor(can->color);
                           XCopyArea(display,can->pix,can->window,
                                   cdrawGC,0,0,can->width,can->height,0,0);
                   } else
                           XCopyArea(display,can->pix,can->window,
                                   drawGC,0,0,can->width,can->height,0,0);
                 pline(display,can,can->window);                  pline(display,can,can->window);
                 XFlush(display);                  XFlush(display);
         }          }
Line 766  reset_current_computation()
Line 913  reset_current_computation()
                 define_cursor(current_can->window,normalcur);                  define_cursor(current_can->window,normalcur);
         }          }
 }  }
   
   static struct canvas *Can;
   /* void print_canvas(Widget w,struct canvas *can, XtPointer calldata); */
   static void output_to_file(Widget , XtPointer, XtPointer );
   static void output_to_ps_printer(Widget , XtPointer, XtPointer );
   static void cancel_output_to_file(Widget , XtPointer,XtPointer);
   static void generate_psfile(struct canvas *can, FILE *fp);
   static void set_printing_method(Widget,XtPointer,XtPointer);
   static void method_is_not_available();
   static Widget PrintDialog;
   static Widget PrintDialog_lp;
   static Widget W;
   static char *Fname = NULL;
   static char *PrinterName = NULL;
   #define PRINTING_METHOD_BITMAP 0
   #define PRINTING_METHOD_VECTOR 1
   static int PrintingMethod = PRINTING_METHOD_BITMAP;
   static String Printing_methods[]={
     "bitMap","vector",
   };
   static int N_printing_methods = 2;
   
   /*
   static Widget create_printing_method_bar(Widget parent) {
     Widget panel, button;
     int i,n;
     Arg wargs[1];
     panel = XtCreateManagedWidget("printing methods",panedWidgetClass,
                                                                   parent,NULL,0);
     for (i=0; i<N_printing_methods; i++) {
           button = XtCreateManagedWidget(Printing_methods[i],menuButtonWidgetClass,
                                                                      panel,NULL,0);
           fprintf(stderr,"button=%x\n",(int) button);
           XtAddCallback(button,XtNcallback,set_printing_method,(XtPointer) i);
     }
     return(panel);
   }
   */
   
   
   static void print_canvas(w,can,calldata)
            Widget w;
            struct canvas *can;
            XtPointer calldata;
   {
     Widget fshell,fdialog;
     extern struct canvas *Can;
     extern Widget W;
     Widget entry;
     int i;
     Arg arg[1];
   
     W = w;
     Can = can;
     create_popup(can->shell,"Print/Output PS file","",&fshell,&fdialog);
     XawDialogAddButton(fdialog,"print",output_to_printer,w);
     XawDialogAddButton(fdialog,"output PS file",print_canvas_to_file,w);
     XawDialogAddButton(fdialog,"method",printing_method,w);
     XawDialogAddButton(fdialog,"dismiss",cancel_output_to_file,w);
     XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);
     SetWM_Proto(fshell);
   }
   
   static void set_printing_method(Widget w,XtPointer number,XtPointer call_data) {
     Widget shell;
     extern int PrintingMethod;
     PrintingMethod = (int) number;
     fprintf(stderr,"PrintingMethod=%d\n",number);
     shell = XtParent(XtParent(w));
     XtPopdown(shell); XtDestroyWidget(shell);
   }
   
   static void printing_method(w,can,calldata)
            Widget w;
            struct canvas *can;
            XtPointer calldata;
   {
     Arg arg[10];
     int i,n;
     Widget fshell,fdialog;
     extern struct canvas *Can;
     extern int PrintingMethod;
   
     w = W;
     can = Can;
     create_popup(can->shell,"Printing method",Printing_methods[PrintingMethod],
                              &fshell,&fdialog);
     n = 0;
     XtSetArg(arg[n], XtNlabel, "Method: "); n++;
     XtSetArg(arg[n], XtNvalue, Printing_methods[PrintingMethod]); n++;
     XtSetValues(fdialog,arg,n);
     for (i=0; i<N_printing_methods; i++) {
           XawDialogAddButton(fdialog,Printing_methods[i],set_printing_method,(XtPointer) i);
     }
     XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);
     SetWM_Proto(fshell);
   }
   static void print_canvas_to_file(w,can,calldata)
            Widget w;
            struct canvas *can;
            XtPointer calldata;
   {
     FILE *fp;
     Arg arg[10];
     int n;
     static char *psfile = NULL;
     Widget fshell,fdialog;
     extern struct canvas *Can;
     extern Widget PrintDialog;
     extern char *Fname;
   
     w = W;
     can = Can;
     if (psfile == NULL || Fname == NULL) psfile = "ox_plot.eps";
     else psfile = Fname;
     create_popup(can->shell,"Output as PS file",psfile,&fshell,&fdialog);
     n = 0;
     XtSetArg(arg[n], XtNlabel, "File : "); n++;
     XtSetArg(arg[n], XtNvalue, psfile); n++;
     XtSetValues(fdialog,arg,n);
     XawDialogAddButton(fdialog,"output to file",output_to_file,w);
     XawDialogAddButton(fdialog,"cancel",cancel_output_to_file,w);
     PrintDialog = fdialog;
     XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);
     SetWM_Proto(fshell);
   }
   static void output_to_printer(w,can,calldata)
            Widget w;
            struct canvas *can;
            XtPointer calldata;
   {
     FILE *fp;
     Arg arg[10];
     int n;
     static char *psfile = NULL;
     Widget fshell,fdialog;
     extern struct canvas *Can;
     extern Widget PrintDialog_lp;
     extern char *PrinterName;
   
     w = W;
     can = Can;
     if (psfile  == NULL || PrinterName == NULL) psfile = "lp";
     else psfile = PrinterName;
     create_popup(can->shell,"Output PS file to printer",psfile,&fshell,&fdialog);
     n = 0;
     XtSetArg(arg[n], XtNlabel, "PS Printer Name : "); n++;
     XtSetArg(arg[n], XtNvalue, psfile); n++;
     XtSetValues(fdialog,arg,n);
     XawDialogAddButton(fdialog,"output to PS printer",output_to_ps_printer,w);
     XawDialogAddButton(fdialog,"cancel",cancel_output_to_file,w);
     PrintDialog_lp = fdialog;
     XtSetSensitive(w,False); XtPopup(fshell,XtGrabNone);
     SetWM_Proto(fshell);
   }
   
   static void cancel_output_to_file(w,fbutton,call)
            Widget w;
            XtPointer fbutton, call;
   {
     Widget shell = XtParent(XtParent(w));
     XtPopdown(shell); XtDestroyWidget(shell);
     XtSetSensitive(fbutton,True);
   }
   
   static void output_to_file(w,fbutton,call)
            Widget w;
            XtPointer fbutton, call;
   {
     char *fname;
     FILE *fp;
     int i;
     char *m;
     extern struct canvas *Can;
     extern Widget PrintDialog;
     extern int PrintingMethod;
     Widget shell = XtParent(XtParent(w));
   
     if (PrintingMethod == PRINTING_METHOD_BITMAP) {
     }else{
           method_is_not_available();
           XtPopdown(shell); XtDestroyWidget(shell);
           XtSetSensitive(fbutton,True);
           return;
     }
   
     fname = XawDialogGetValueString(PrintDialog);
     Fname = (char *)malloc(sizeof(char)*strlen(fname)+1);
     strcpy(Fname,fname);
     for (i=0; i<strlen(Fname); i++) {
           if (Fname[i] == 0xd || Fname[i] == 0xa) {
             Fname[i] = 0; break;
           }
     }
     fprintf(stderr,"fname=%s\n",Fname); fflush(NULL);
     fp = fopen(Fname,"w");
     if (fp == NULL) {
           warning(Can,"Could not open the output file.");
     }else{
           generate_psfile(Can,fp);
           fclose(fp);
     }
   
     XtPopdown(shell); XtDestroyWidget(shell);
     XtSetSensitive(fbutton,True);
   }
   
   static void output_to_ps_printer(w,fbutton,call)
            Widget w;
            XtPointer fbutton, call;
   {
     char *printerName;
     FILE *fp;
     extern struct canvas *Can;
     extern Widget PrintDialog_lp;
     char fname[256];
     char cmd[512];
     static int id = 0;
     int i;
     Widget shell = XtParent(XtParent(w));
   
     if (PrintingMethod == PRINTING_METHOD_BITMAP) {
     }else{
           method_is_not_available();
           XtPopdown(shell); XtDestroyWidget(shell);
           XtSetSensitive(fbutton,True);
           return;
     }
   
     sprintf(fname,"/tmp/ox_plot_%d.eps",(int) getpid(),id++);
   
     printerName = XawDialogGetValueString(PrintDialog_lp);
     PrinterName = (char *)malloc(sizeof(char)*strlen(printerName)+1);
     strcpy(PrinterName,printerName);
     for (i=0; i<strlen(PrinterName); i++) {
           if (PrinterName[i] == 0xd || PrinterName[i] == 0xa) {
             PrinterName[i] = 0; break;
           }
     }
     fprintf(stderr,"printerName=%s\n",PrinterName); fflush(NULL);
     fp = fopen(fname,"w");
     if (fp == NULL) {
           warning(Can,"Could not open the output file.");
     }else{
           generate_psfile(Can,fp);
           fclose(fp);
     }
   
     sprintf(cmd,"lpr -P%s %s",PrinterName,fname);
     if (system(cmd)) {
           warning(Can,"Unknown printer?");
     }
     sprintf(cmd,"rm -f %s",fname);
     system(cmd);
     XtPopdown(shell); XtDestroyWidget(shell);
     XtSetSensitive(fbutton,True);
   }
   
   
   /* test sequence
      ox_launch(0,"ox_plot");
      ifplot(x^2-y^3);
      drawcircle(0,0,100,0,0);
      */
   static int getColorSizeOfImageForPS(int xsize,int ysize,XImage *image,
                                       struct xcolorForPS **tableOfxcolorForPS);
   
   static void generate_psfile(can,fp)
            struct canvas *can;
            FILE *fp;
   {
     int x,y;
     XImage *image;
     int color[1];
     int colorSize = 1;
     char *m;
     struct xcolorForPS *tableOfxcolorForPS;
     extern int PrintingMethod;
     fprintf(stderr,"generate_psfile\n");
     if (PrintingMethod == PRINTING_METHOD_BITMAP) {
           if ( display ) {
             fprintf(stderr,"generate_psfile: output to a file.\n");
             image = XGetImage(display,can->pix,
                                                   0,0,can->width,can->height,-1,ZPixmap);
             colorSize =
                   getColorSizeOfImageForPS(can->width,can->height,image,&tableOfxcolorForPS);
             color[0] = 0; /* black line */
             generatePS_from_image(fp,image,can->width,can->height,color,colorSize,can,tableOfxcolorForPS,upsidedown);
           }else{
             fprintf(stderr,"Cannot print on this system\n");
           }
     }else{
           method_is_not_available();
     }
     fflush(NULL);
   }
   
   static void method_is_not_available() {
     char *m;
   #define MSG1 "Printing method \""
   #define MSG2 "\" is not available for this picture."
     m = (char *)malloc(strlen(MSG1)+strlen(MSG2)+strlen(Printing_methods[PrintingMethod])+1);
     strcpy(m,MSG1);
     strcat(m,Printing_methods[PrintingMethod]);
     strcat(m,MSG2);
     warning(Can,m);
   }
   
   clear_pixmap(can)
   struct canvas *can;
   {
           XFillRectangle(display,can->pix,clearGC,0,0,can->width,can->height);
           XFlush(display);
   }
   
   /*
      The following functions are used to generate color postscript file.
   */
   /* In order to count colorSize, binary tree (sm_btree) is used. */
   static struct sm_btree *sm_newNode(unsigned long v);
   static int sm_insert(struct sm_btree *node,unsigned long v);
   static int sm_count(struct sm_btree *rootp);
   
   struct sm_btree {
     unsigned long p;
     struct sm_btree * left;
     struct sm_btree * right;
   };
   static struct sm_btree *sm_newNode(unsigned long v) {
     struct sm_btree * n;
     n = (struct sm_btree *)MALLOC(sizeof(struct sm_btree));
     if (n == NULL) { fprintf(stderr,"No more memory.\n"); exit(10); }
     n->p = v;
     n->left = NULL;
     n->right = NULL;
     return n;
   }
   static int sm_insert(struct sm_btree *node,unsigned long v)
   {
     if (node->p == v) return;
     if (node->p > v) {
       if (node->left == NULL) {
         node->left = sm_newNode(v);
         return;
       }
       sm_insert(node->left,v);
     }
     if (node->p < v) {
       if (node->right == NULL) {
         node->right = sm_newNode(v);
         return;
       }
       sm_insert(node->right,v);
     }
   }
   static int sm_count(struct sm_btree *rootp)
   {
     if (rootp == NULL) return 0;
     return (1+sm_count(rootp->left)+sm_count(rootp->right));
   }
   
   static int setTableOfxcolorForPS(struct sm_btree *rootp,
                                    struct xcolorForPS *table,int k,int size)
   {
     int m;
     m = k;
     if (rootp == NULL) return;
     if (k >= size) {
       warning(Can,"internal error of setTableOfxcolorForPS");
     }
     if (rootp->left != NULL) {
       m = setTableOfxcolorForPS(rootp->left,table,k,size);
     }
   
     (table[m]).pixel = rootp->p;
     m++;
     if (rootp->right != NULL) {
       m = setTableOfxcolorForPS(rootp->right,table,m,size);
     }
     return m;
   }
   
   
   static int getColorSizeOfImageForPS(int xsize,int ysize,XImage *image,
                                       struct xcolorForPS **tableOfxcolorForPS)
   {
     int x,y;
     int size;
     struct sm_btree root;
     struct xcolorForPS *table;
     XStandardColormap scm;
     Colormap cm;
     XColor color;
     XColor white;
     int screen,i;
   
     root.p = 0;
     root.left = NULL; root.right=NULL;
     /* get color size */
     for (x=0; x<xsize; x++) {
       for (y=0; y<ysize; y++) {
         sm_insert(&root,XGetPixel(image,x,y));
       }
     }
     size=sm_count(&root);
   
     table = (struct xcolorForPS *)MALLOC((size+1)*sizeof(struct xcolorForPS));
     if (table == NULL) {
           fprintf(stderr,"No more memory in getColorSizeOfImageForPS.\n");
           return 0;
     }
     /* Set rgb values standing for the pixel values.
     */
     if (setTableOfxcolorForPS(&root,table,0,size) != size) {
           warning(Can,"internal error.");
           return ;
     }
   
     screen = DefaultScreen(display);
     cm = DefaultColormap(display,screen);
     /*  BUG: it does not work.
     if (!XGetStandardColormap(display,RootWindow(display,DefaultScreen(display)),&scm,XA_RGB_DEFAULT_MAP)) {
           warning(Can,"failed to open the X Standard Colormap.");
           scm.red_max = 0xffff;
           scm.green_max = 0xffff;
           scm.blue_max = 0xffff;
     }
     */
     /* Set by hand. */
     scm.red_max = 0xffff;
     scm.green_max = 0xffff;
     scm.blue_max = 0xffff;
     XParseColor(display,cm,"White",&white);
     for (i=0; i<size; i++) {
       color.pixel=(table[i]).pixel;
       /*
       {
         char s[254];
         sprintf(s,"%ld",color.pixel);
         warning(Can,s);
       }
       */
       XQueryColor(display,cm,&color);
       (table[i]).r = ((double) color.red)/((double) scm.red_max);
       (table[i]).g = ((double) color.green)/((double) scm.green_max);
       (table[i]).b = ((double) color.blue)/((double) scm.blue_max);
       if ((table[i]).r > 1.0) (table[i]).r = 1.0;
       if ((table[i]).g > 1.0) (table[i]).g = 1.0;
       if ((table[i]).b > 1.0) (table[i]).b = 1.0;
       if (color.red == white.red && color.green == white.green
           && color.blue == white.blue) {
         (table[i]).print = 0;
       }else{
         (table[i]).print = 1;
       }
     }
   
     *tableOfxcolorForPS = table;
     return size;
   }
   
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  Added in v.1.26
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