#include <petsc/private/fortranimpl.h>
#include <petscdraw.h>
#include <petscviewer.h>

#if defined(PETSC_HAVE_FORTRAN_CAPS)
#define petsc_viewer_draw__       PETSC_VIEWER_DRAW_BROKEN
#define petscviewerdrawgetdraw_   PETSCVIEWERDRAWGETDRAW
#define petscviewerdrawgetdrawlg_ PETSCVIEWERDRAWGETDRAWLG
#define petscviewerdrawopen_       PETSCVIEWERDRAWOPEN
#elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
#define petsc_viewer_draw__       petsc_viewer_draw_
#define petscviewerdrawgetdraw_   petscviewerdrawgetdraw
#define petscviewerdrawgetdrawlg_ petscviewerdrawgetdrawlg
#define petscviewerdrawopen_       petscviewerdrawopen
#endif

#if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE)
#define petsc_viewer_draw__      petsc_viewer_draw___
#endif

PETSC_EXTERN PetscViewer PETSC_STDCALL petsc_viewer_draw__(MPI_Comm *comm)
{
  return PETSC_VIEWER_DRAW_(MPI_Comm_f2c(*(MPI_Fint*)&*comm));
}

PETSC_EXTERN void PETSC_STDCALL petscviewerdrawgetdraw_(PetscViewer *vin,int *win,PetscDraw *draw,PetscErrorCode *ierr)
{
  PetscViewer v;
  PetscPatchDefaultViewers_Fortran(vin,v);
  *ierr = PetscViewerDrawGetDraw(v,*win,draw);
}

PETSC_EXTERN void PETSC_STDCALL petscviewerdrawgetdrawlg_(PetscViewer *vin,int *win,PetscDrawLG *drawlg,PetscErrorCode *ierr)
{
  PetscViewer v;
  PetscPatchDefaultViewers_Fortran(vin,v);
  *ierr = PetscViewerDrawGetDrawLG(v,*win,drawlg);
}

PETSC_EXTERN void PETSC_STDCALL petscviewerdrawopen_(MPI_Comm *comm,char* display PETSC_MIXED_LEN(len1),
                   char* title PETSC_MIXED_LEN(len2),int *x,int*y,int*w,int*h,PetscViewer *v,
                   PetscErrorCode *ierr PETSC_END_LEN(len1) PETSC_END_LEN(len2))
{
  char *c1,*c2;

  FIXCHAR(display,len1,c1);
  FIXCHAR(title,len2,c2);
  *ierr = PetscViewerDrawOpen(MPI_Comm_f2c(*(MPI_Fint*)&*comm),c1,c2,*x,*y,*w,*h,v);
  FREECHAR(display,c1);
  FREECHAR(title,c2);
}