rui.c

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/*
 * $Id: rui.c,v 1.2 2004/06/22 17:53:10 joaoluiz Exp $
 * (C) COPYRIGHT 2004, Joao Luiz Elias Campos.
 * All Rights Reserved
 * Duplication of this program or any part thereof without the express
 * written consent of the author is prohibited
 */

/*
 * Global variables and symbols:
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if !defined(WIN32)
# include <dlfcn.h>
#endif
#include "rui.h"
#include "node.h"
#include "elm.h"

#define MODEL_CB void (*)(int, void *, int, void *, void **)

struct UI_State {
 void *uilib;
 int (*open)(char *);
 void (*close)(void);
 int (*event)(void);
 void (*events)(void);
 void (*draw)(void);
 void (*model)(int, void *, int, void *, void **);
 void (*disp)(int, double *);
};

static char *size = NULL;

UI_State *UIStart(int argc, char *argv[])
{
 int i = 1;
 int have_ui = 0;
 char uiname[256];
 char *opt = NULL;
 char *relax_dir = NULL;
 char *tec_uname = NULL;
 UI_State *state = NULL;

 for( opt = argv[1]; opt != NULL; opt = argv[i] ) {
  if( strcmp(opt, "--ui") == 0 ) {
   have_ui = 1;
  }
  else if( strcmp(opt, "--geometry") == 0 ) {
   have_ui = 1;
   size = strdup(argv[i+1]);
   i++;
  }
  i++;
 }
 if( !have_ui ) {
  return state;
 }
 if( size == NULL ) {
  size = strdup("300x300");
 }

 if( (relax_dir = getenv("RELAX_DIR")) == NULL ) {
  fprintf(stderr, "Could not start Relax user interface, RELAX_DIR ");
  fprintf(stderr, "must be defined.\n\n");
  return state;
 }
 if( (tec_uname = getenv("TEC_UNAME")) == NULL ) {
  fprintf(stderr, "Could not start Relax user interface, TEC_UNAME ");
  fprintf(stderr, "must be defined.\n\n");
  return state;
 }
#if defined(WIN32)
 sprintf(uiname, "%s\\lib\\%s\\relax_ui.dll", relax_dir, tec_uname);
#else
 sprintf(uiname, "%s/lib/%s/librelax_ui.so", relax_dir, tec_uname);
#endif
#if 0 /* Tem que fazer funcionar para Windows esse trecho AQUI */
 state = (UI_State *)malloc(sizeof(UI_State));
 if( (state->uilib = dlopen(uiname, RTLD_LAZY)) == NULL ) {
  fprintf(stderr, "Could not load %s user interface library.\n\n", uiname);
  free(state);
  return NULL;
 }

 state->open = (int (*)(char *))dlsym(state->uilib, "RelaxUIOpen");
 state->close = (void (*)(void))dlsym(state->uilib, "RelaxUIClose");
 state->event = (int (*)(void))dlsym(state->uilib, "RelaxUIProcessEvent");
 state->events = (void (*)(void))dlsym(state->uilib, "RelaxUIProcessEvents");
 state->draw = (void (*)(void))dlsym(state->uilib, "RelaxUIDraw");
 state->model = (MODEL_CB)dlsym(state->uilib, "RelaxUISetModel");
 state->disp = (void (*)(int, double *))dlsym(state->uilib, "RelaxUISetDisplacement");
#endif
 if( state->open == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUIOpen");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->close == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUIClose");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->event == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUIProcessEvent");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->events == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUIProcessEvents");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->draw == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUIDraw");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->model == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUISetModel");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 if( state->disp == NULL ) {
  fprintf(stderr, "Could not get %s function from library.\n", "RelaxUISetDisplacement");
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }

 (*state->model)(NumNodes, NodeVector, NumElements, (void *)ElmClass, (void **)ElmList);
 if( !(*state->open)(size) ) {
  fprintf(stderr, "Could not open %s library.\n", uiname);
  /* dlclose(state->uilib); AQUI */
  free(state);
  return NULL;
 }
 return state;

} /* End of UIStart */

void UIFinish(UI_State *state)
{
 (*state->close)();
 /* dlclose(state->uilib); AQUI */
 free(state);

} /* End of UIFinish */

void UIDraw(UI_State *state)
{
 (*state->draw)();

} /* End of UIDraw */

void UISetDisplacement(UI_State *state, int ndof, double *u)
{
 (*state->disp)(ndof, u);

} /* End of UISetDisplacement */

/*
 * End of File.
 */

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