/*
 * 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/asir2018/plot/plotp.c,v 1.1 2018/09/19 05:45:08 noro Exp $
*/
#include "ca.h"
#include "parse.h"
#include "ox.h"
#include "ifplot.h"
#include <math.h>

#if defined(sun) && !defined(__svr4__)
#define EXP10(a) exp10(a)
#else
#define EXP10(a) pow(10.0,a)
#endif

#if defined(VISUAL) || defined(__MINGW32__)
static POINT oldpos;
#endif

#if !defined(VISUAL) && !defined(__MINGW32__)
extern Pixel BackPixel;
unsigned long GetColor(Display *, char *);

unsigned long GetColor(Display *dis, char *color_name)
{
  Colormap cmap;
  XColor near_color, true_color;

  cmap = DefaultColormap( dis, 0 );
  XAllocNamedColor( dis, cmap, color_name, &near_color, &true_color );
  return( near_color.pixel );
}

void area_print(DISPLAY *display,double **tab,struct canvas *can,int GXcode){
  int ix,iy,width,height,wc,**mask;
  XImage *image;
  DRAWABLE pix;
  unsigned int color,black,white,c2;
  //unsigned long color,black,white,c2;
  double *px,*px1,*px2;
  //GXcode 0:new 1:cp 2:and 3:or 4:xor
  width=can->width;
  height=can->height;
  pix=can->pix;
  mask=(int **)ALLOCA((width)*sizeof(int *));
  for(ix=0;ix<width;ix++)mask[ix]=(int *)ALLOCA((height)*sizeof(int));
  // create mask table values boundary:0 positive:1 negativ:-1
  for(ix=0;ix<width;ix++)for(iy=0;iy<height;iy++)
    if((tab[ix][iy]>0)&&(tab[ix+1][iy]>0)&&(tab[ix][iy+1]>0)&&
      (tab[ix+1][iy+1]>0)) mask[ix][iy]=1;//all postive
    else if((tab[ix][iy]<0)&&(tab[ix+1][iy]<0)&&(tab[ix][iy+1]<0)&&
      (tab[ix+1][iy+1]<0)) mask[ix][iy]=-1;//all negativ
    else mask[ix][iy]=0;//boundary
  flush();
  black=GetColor(display,"black");
  white=GetColor(display,"white");
  set_drawcolor(can->color);
  color=can->color;
  image=XGetImage(display,pix,0,0,width,height,-1,ZPixmap);
  for(ix=0;ix<width;ix++){
    for(iy=0;iy<height;iy++){
      c2=XGetPixel(image,ix,height-iy-1);
      if(c2==white)wc=-1;
      else if(c2==black)wc=0;
      else wc=1;
      if(wc!=0){//XPutPixel(image,ix,iy,black);
        if(mask[ix][iy]==0)XPutPixel(image,ix,height-iy-1,black);//boundary
        else {
          switch (GXcode){
          case 0: //new window
          case 1: //cp
            if(mask[ix][iy]==1)XPutPixel(image,ix,height-iy-1,color);
            else XPutPixel(image,ix,height-iy-1,BackPixel);
            break;
          case 2: //and
            if((mask[ix][iy]==1)&&(wc==1))XPutPixel(image,ix,height-iy-1,color);
            else XPutPixel(image,ix,height-iy-1,BackPixel);
            break;
          case 3: //or
            if((mask[ix][iy]==1)||(wc==1))XPutPixel(image,ix,height-iy-1,color);
            else XPutPixel(image,ix,height-iy-1,BackPixel);
            break;
          case 4: //xor
            if((mask[ix][iy]==1)^(wc==1))XPutPixel(image,ix,height-iy-1,color);
            else XPutPixel(image,ix,height-iy-1,BackPixel);
            break;
          }
        }
      }
    }
  }
  XPutImage(display,pix,drawGC,image,0,0,0,0,width,height);
  count_and_flush();
  flush();
}
#else
void area_print(DISPLAY *display,double **tab,struct canvas *can,int GXcode){
    /* not implemented */
}
#endif

void over_print(DISPLAY *display,double **tab,struct canvas *can,int GXcode){
  int ix,iy,width,height;
  DRAWABLE pix;
  double vmin,vmax;
  //GXcode 0:over 1:cp 2:and 3:or 4:xor
  pix=can->pix; width=can->width; height=can->height;
  for(ix=0;ix<width;ix++){
    for(iy=0;iy<height;iy++){
      vmax=
      MAX(MAX(tab[ix][iy],tab[ix][iy+1]),MAX(tab[ix+1][iy],tab[ix+1][iy+1]));
      vmin=
      MIN(MIN(tab[ix][iy],tab[ix][iy+1]),MIN(tab[ix+1][iy],tab[ix+1][iy+1]));
      if(vmin<=0.0 && vmax>=0.0) DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
    }
    count_and_flush();
  }
  flush();
}

void if_printNG(DISPLAY *display,double **tab,struct canvas *can,int cond){
  int ix,iy,width,height;
  double zst,zed,zsp;
  DRAWABLE pix;
  width=can->width; height=can->height; pix=can->pix;
  if(cond==0){
    //IFPLOTB
    for(iy=0;iy<height-1;iy++)for(ix=0;ix<width-1;ix++)
      if(tab[ix][iy]==0.0) DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
  } else if(cond==1) {
    //IFPLOT,IFPLOTD,IFPLOTQ
    for(iy=0;iy<height-1;iy++)for(ix=0;ix<width-1;ix++){
      if(tab[ix][iy]==0.0) DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
      else if(tab[ix][iy]>0){
        if(tab[ix+1][iy+1]<0||tab[ix][iy+1]<0||tab[ix+1][iy]<0)
          DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
      } else if(tab[ix+1][iy+1]>0||tab[ix][iy+1]>0||tab[ix+1][iy]>0)
        DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
      count_and_flush();
    }
  }
  flush();
}

void polar_print(DISPLAY *display,struct canvas *can){
  int len,i,j,x,y;
  unsigned int color;
  POINT *pa;

#if defined(VISUAL) || defined(__MINGW32__)
  HDC dc;
  HPEN pen,oldpen;
  len=can->pa[0].length;
  color=can->color;
  pa=can->pa[0].pos;
  for(i=1;i<len;i++){
    j=i-1;
    if(color){
      pen=CreatePen(PS_SOLID,1,color);
      oldpen=SelectObject(can->pix,pen);
      DRAWLINE(display,can->pix,drawGC,XC(pa[j]),YC(pa[j]),XC(pa[i]),YC(pa[i]));
      SelectObject(can->pix,oldpen);

      dc = GetDC(can->hwnd);
      oldpen = SelectObject(dc,pen);
      DRAWLINE(display,dc,drawGC,XC(pa[j]),YC(pa[j]),XC(pa[i]),YC(pa[i]));
      SelectObject(dc,oldpen);
      ReleaseDC(can->hwnd,dc);

      DeleteObject(pen);
    } else {
      DRAWLINE(display,can->pix,drawGC,XC(pa[j]),YC(pa[j]),XC(pa[i]),YC(pa[i]));
      dc = GetDC(can->hwnd);
      DRAWLINE(display,dc,drawGC,XC(pa[j]),YC(pa[j]),XC(pa[i]),YC(pa[i]));
      ReleaseDC(can->hwnd,dc);
    }
  }
#else
  len=can->pa[0].length;
  color=can->color;
  pa=can->pa[0].pos;
  for(i=1;i<len;i++){
    j=i-1;
    DRAWLINE(display,can->pix,cdrawGC,XC(pa[j]),YC(pa[j]),XC(pa[i]),YC(pa[i]));
  }
  XFlush(display);
#endif
}


void if_print(DISPLAY *display,double **tab,struct canvas *can){
  int ix,iy,width,height;
  double *px,*px1,*px2;
  DRAWABLE pix;

  if ( can->mode == modeNO(CONPLOT) ) {
    con_print(display,tab,can); return;
  }
  flush();
  width = can->width; height = can->height; pix = can->pix;
  for( ix=0; ix<width-1; ix++ )
    for(iy=0, px=tab[ix], px1 = tab[ix+1], px2 = px+1;
      iy<height-1 ;iy++, px++, px1++, px2++ )
      if ( ((*px >= 0) && ((*px1 <= 0) || (*px2 <= 0))) ||
        ((*px <= 0) && ((*px1 >= 0) || (*px2 >= 0))) ) {
    DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
    count_and_flush();
  }
  flush();
/*
  int i,ix,iy,width,height;
  double *px,*px1,*px2;
  double **vmax,**vmin,*zst,zstep,zv,u,l;
  DRAWABLE pix;
  POINT *pa,*pa1;
  struct pa *parray;

  if(can->mode==modeNO(CONPLOT)){
    width=can->width;height=can->height;pix=can->pix;
    //con_print(display,tab,can);
    // calc all cell max,min value
    vmax=((double **)ALLOCA((width+1)*sizeof(double *)));
    vmin=((double **)ALLOCA((width+1)*sizeof(double *)));
    for(i=0;i<width;i++){
      vmax[i]=(double *)ALLOCA((height+1)*sizeof(double));
      vmin[i]=(double *)ALLOCA((height+1)*sizeof(double));
    }
    for(ix=0;ix<width;ix++){
      for(iy=0;iy<height;iy++){
        vmax[ix][iy]=
        MAX(MAX(tab[ix][iy],tab[ix][iy+1]),MAX(tab[ix+1][iy],tab[ix+1][iy+1]));
        vmin[ix][iy]=
        MIN(MIN(tab[ix][iy],tab[ix][iy+1]),MIN(tab[ix+1][iy],tab[ix+1][iy+1]));
      }
    }
    if(can->zmax==can->zmin)zstep=(can->vmax-can->vmin)/can->nzstep;
    else zstep=(can->zmax-can->zmin)/can->nzstep;
    zst=(double *)ALLOCA((can->nzstep+1)*sizeof(double));
    zv=can->xmin;
    for(i=0,zv=can->xmin;i<can->nzstep;zv+=zstep,i++)zst[i]=zv;
    for(iy=0;iy<height-1;iy++){
      for(ix=0;ix<width-1;ix++){
        for(i=0;i<can->nzstep;i++){
          if(vmin[ix][iy]<=zst[i] && vmax[ix][iy]>=zst[i]){
            DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
            break;
          }
          count_and_flush();
        }
      }
    }
  } else {
    width=can->width;height=can->height;pix=can->pix;
    for(ix=0;ix<width-1;ix++)
    for(iy=0,px=tab[ix],px1=tab[ix+1],px2=px+1;iy<height-1;
      iy++,px++,px1++,px2++)
      if(((*px>=0)&&((*px1<=0)||(*px2<=0)))||
        ((*px<=0)&&((*px1>=0)||(*px2>=0)))){
        DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
        count_and_flush();
      }
  }
  flush();
*/
}

#define MEMORY_DRAWPOINT(a,len,x,y) (((a)[(len)*(y)+((x)>>3)]) |= (1<<((x)&7)))

void memory_if_print(double **tab,struct canvas *can,BYTEARRAY *bytes){
  int ix,iy,width,height;
  double *px,*px1,*px2;
  unsigned char *array;
  int scan_len;
  if ( can->mode==modeNO(CONPLOT)){
    memory_con_print(tab,can,bytes);
    return;
  }
  width = can->width; height = can->height;
  // scan_len = byte length of the scan line
  scan_len = (width+7)/8;
  MKBYTEARRAY(*bytes,scan_len*height);
  array = BDY(*bytes);
  for( ix=0; ix<width-1; ix++ )
    for(iy=0, px=tab[ix], px1 = tab[ix+1], px2 = px+1;
      iy<height-1 ;iy++, px++, px1++, px2++ )
      if ( ((*px >= 0) && ((*px1 <= 0) || (*px2 <= 0))) ||
         ((*px <= 0) && ((*px1 >= 0) || (*px2 >= 0))) ) {
        MEMORY_DRAWPOINT(array,scan_len,ix,height-iy-1);
      }
}

void con_print(DISPLAY *display,double **tab,struct canvas *can){
  int i,ix,iy,width,height;
  double *px,*px1,*px2;
  double **vmax,**vmin,*zst,zstep,zv,u,l;
  DRAWABLE pix;
  POINT *pa,*pa1;
  struct pa *parray;

  width=can->width;height=can->height;pix=can->pix;
  vmax=((double **)ALLOCA((width+1)*sizeof(double *)));
  vmin=((double **)ALLOCA((width+1)*sizeof(double *)));
  for(i=0;i<width;i++){
    vmax[i]=(double *)ALLOCA((height+1)*sizeof(double));
    vmin[i]=(double *)ALLOCA((height+1)*sizeof(double));
  }
  for(ix=0;ix<width;ix++){
    for(iy=0;iy<height;iy++){
      vmax[ix][iy]=
      MAX(MAX(tab[ix][iy],tab[ix][iy+1]),MAX(tab[ix+1][iy],tab[ix+1][iy+1]));
      vmin[ix][iy]=
      MIN(MIN(tab[ix][iy],tab[ix][iy+1]),MIN(tab[ix+1][iy],tab[ix+1][iy+1]));
    }
  }
  if(can->zmax==can->zmin)zstep=(can->vmax-can->vmin)/can->nzstep;
  else zstep=(can->zmax-can->zmin)/can->nzstep;
  zst=(double *)ALLOCA((can->nzstep+1)*sizeof(double));
  zv=can->xmin;
  for(i=0,zv=can->xmin;i<can->nzstep;zv+=zstep,i++)zst[i]=zv;
  for(iy=0;iy<height-1;iy++){
    for(ix=0;ix<width-1;ix++){
      for(i=0;i<can->nzstep;i++){
        if(vmin[ix][iy]<=zst[i] && vmax[ix][iy]>=zst[i]){
          DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
          break;
        }
        count_and_flush();
      }
    }
  }
  flush();
}

void memory_con_print(double **tab,struct canvas *can,BYTEARRAY *bytes){
  int ix,iy,iz,width,height,pas,pai,len;
  double zstep,z;
  double *px,*px1,*px2;
  POINT *pa,*pa1;
  struct pa *parray;
  unsigned char *array;
  int scan_len;

  width = can->width; height = can->height;
  zstep = (can->zmax-can->zmin)/can->nzstep;
  can->pa = (struct pa *)MALLOC((can->nzstep+1)*sizeof(struct pa));
  pas = width;
  pa = (POINT *)ALLOCA(pas*sizeof(POINT));
  for ( z = can->zmin, iz = 0; z <= can->zmax; z += zstep, iz++ ) {
    pai = 0;  
    for( ix=0; ix<width-1; ix++ )
      for(iy=0, px=tab[ix], px1 = tab[ix+1], px2 = px+1;
        iy<height-1 ;iy++, px++, px1++, px2++ )
        if ( ((*px >= z) && ((*px1 <= z) || (*px2 <= z))) ||
            ((*px <= z) && ((*px1 >= z) || (*px2 >= z))) ) {
          if ( pai == pas ) {
            pa1 = (POINT *)ALLOCA(2*pas*sizeof(POINT));
            bcopy((char *)pa,(char *)pa1,pas*sizeof(POINT)); pa = pa1;
            pas += pas;
          }
          XC(pa[pai]) = ix; YC(pa[pai]) = height-iy-1; pai++;
        }
    can->pa[iz].length = pai;
    if ( pai ) {
      pa1 = (POINT *)MALLOC(pai*sizeof(POINT));
      bcopy((char *)pa,(char *)pa1,pai*sizeof(POINT));
      can->pa[iz].pos = pa1;
    }
  }
  /* scan_len = byte length of the scan line */
  scan_len = (width+7)/8;
  MKBYTEARRAY(*bytes,scan_len*height);
  array = BDY(*bytes);
  for ( parray = can->pa, iz = 0; iz <= can->nzstep; iz++, parray++ )
    for ( pa = parray->pos, len = parray->length, ix = 0; ix < len; ix++ ) {
      MEMORY_DRAWPOINT(array,scan_len,XC(pa[ix]),YC(pa[ix]));
    }
}

void memory_print(struct canvas *can,BYTEARRAY *bytes){
  int len,scan_len,i;
  POINT *pa;
  char *array;

  /* scan_len = byte length of the scan line */
  scan_len = (can->width+7)/8;
  MKBYTEARRAY(*bytes,scan_len*can->height);
  array = (char*)BDY(*bytes);

  len = can->pa[0].length;
  pa = can->pa[0].pos;
  for ( i = 0; i < len; i++ ) {
    MEMORY_DRAWPOINT(array,scan_len,pa[i].x,pa[i].y);
  }
}

void qif_print(DISPLAY *display,char **tab,struct canvas *can){
  int ix,iy,width,height;
  char *px;
  DRAWABLE pix;

  flush();
  width = can->width; height = can->height; pix = can->pix;
  for( ix = 0; ix < width; ix++ )
    for(iy = 0, px = tab[ix]; iy < height ;iy++, px++ )
      if ( *px ) {
        DRAWPOINT(display,pix,cdrawGC,ix,height-iy-1);
        count_and_flush();
      }
  flush();
}

void plot_print(DISPLAY *display,struct canvas *can){
  int len;
  POINT *pa;

#if defined(VISUAL) || defined(__MINGW32__)  
  len = can->pa[0].length;
  pa = can->pa[0].pos;

  Polyline(can->pix,pa,len);
//  for ( i = 0; i < len-1; i++ ) {
//    DRAWLINE(display,can->pix,drawGC,pa[i].x,pa[i].y,pa[i+1].x,pa[i+1].y);
//  }
#else
  XDrawLines(display,can->pix,drawGC,
    can->pa[0].pos,can->pa[0].length,CoordModeOrigin);
  XFlush(display);
#endif
}

void draw_point(DISPLAY *display,struct canvas *can,int x,int y,unsigned int color){
//void draw_point(DISPLAY *display,struct canvas *can,int x,int y,int color){
#if defined(VISUAL) || defined(__MINGW32__)
  HDC dc;

  SetPixel(can->pix,x,y,(COLORREF)color);
  dc = GetDC(can->hwnd);
  SetPixel(dc,x,y,(COLORREF)color);
  ReleaseDC(can->hwnd,dc);
#else
  set_drawcolor(color);
  DRAWPOINT(display,can->pix,cdrawGC,x,y);
  DRAWPOINT(display,can->window,cdrawGC,x,y);
  XFlush(display);
#endif
}

void draw_line(
  DISPLAY *display,struct canvas *can,int x,int y,int u,int v,unsigned int color){
  //DISPLAY *display,struct canvas *can,int x,int y,int u,int v,int color){
#if defined(VISUAL) || defined(__MINGW32__)
  HDC dc;
  HPEN pen,oldpen;

  if ( color ) {
    pen = CreatePen(PS_SOLID,1,color);
    oldpen = SelectObject(can->pix,pen);
    DRAWLINE(display,can->pix,drawGC,x,y,u,v);
    SelectObject(can->pix,oldpen);

    dc = GetDC(can->hwnd);
    oldpen = SelectObject(dc,pen);
    DRAWLINE(display,dc,drawGC,x,y,u,v);
    SelectObject(dc,oldpen);
    ReleaseDC(can->hwnd,dc);

    DeleteObject(pen);
  } else {
    DRAWLINE(display,can->pix,drawGC,x,y,u,v);
    dc = GetDC(can->hwnd);
    DRAWLINE(display,dc,drawGC,x,y,u,v);
    ReleaseDC(can->hwnd,dc);
  }
#else
  set_drawcolor(color);
  DRAWLINE(display,can->pix,cdrawGC,x,y,u,v);
  DRAWLINE(display,can->window,cdrawGC,x,y,u,v);
  XFlush(display);
#endif
}

void draw_character_string(
  DISPLAY *display,struct canvas *can,int x,int y,char *str,unsigned int color){
  //DISPLAY *display,struct canvas *can,int x,int y,char *str,int color){
#if defined(VISUAL) || defined(__MINGW32__)
  HDC dc;
  COLORREF oldcolor;

  if ( color ) {
    oldcolor = SetTextColor(can->pix,color);
    DRAWSTRING(display,can->pix,drawGC,x,y,str,strlen(str));
    SetTextColor(can->pix,oldcolor);

    dc = GetDC(can->hwnd);
    oldcolor = SetTextColor(dc,color);
    DRAWSTRING(display,dc,drawGC,x,y,str,strlen(str));
    SetTextColor(dc,oldcolor);
    ReleaseDC(can->hwnd,dc);
  } else {
    DRAWSTRING(display,can->pix,drawGC,x,y,str,strlen(str));
    dc = GetDC(can->hwnd);
    DRAWSTRING(display,dc,drawGC,x,y,str,strlen(str));
    ReleaseDC(can->hwnd,dc);
  }
#else
  set_drawcolor(color);
  DRAWSTRING(display,can->pix,cdrawGC,x,y,str,strlen(str));
  DRAWSTRING(display,can->window,cdrawGC,x,y,str,strlen(str));
  XFlush(display);
#endif
}

#define D 5

void pline(DISPLAY *display,struct canvas *can,DRAWABLE d){
  double w,w1,e,n;
  int x0,y0,x,y,xadj,yadj;
  char buf[BUFSIZ];
  double adjust_scale();

  /* XXX : should be cleaned up */
  if ( can->noaxis || (can->mode==modeNO(PLOT)&& !can->pa) )
    return;
  if ( can->mode==modeNO(INTERACTIVE))
    return;

  xadj = yadj = 0;
  if ( (can->xmin < 0) && (can->xmax > 0) ) {
    x0 = (int)((can->width)*(-can->xmin/(can->xmax-can->xmin)));
    DRAWLINE(display,d,dashGC,x0,0,x0,can->height);
  } else if ( can->xmin >= 0 )
    x0 = 0;
  else
    x0 = can->width-D;
  if ( (can->ymin < 0) && (can->ymax > 0) ) {
    y0 = (int)((can->height)*(can->ymax/(can->ymax-can->ymin)));
    DRAWLINE(display,d,dashGC,0,y0,can->width,y0);
  } else if ( can->ymin >= 0 )
    y0 = can->height;
  else
    y0 = D;

  /* scale on x-axis */
  w = can->xmax-can->xmin; 
  w1 = w * DEFAULTWIDTH/can->width;
  e = adjust_scale(EXP10(floor(log10(w1))),w1);
  for ( n = ceil(can->xmin/e); n*e<= can->xmax; n++ ) {
    x = (int)(can->width*(n*e-can->xmin)/w);
    DRAWLINE(display,d,drawGC,x,y0,x,y0-D);
    sprintf(buf,"%g",n*e);
    DRAWSTRING(display,d,scaleGC,x+2,y0+2,buf,strlen(buf));
  }

  /* scale on y-axis */
  w = can->ymax-can->ymin;
  w1 = w * DEFAULTHEIGHT/can->height;
  e = adjust_scale(EXP10(floor(log10(w1))),w1);
  for ( n = ceil(can->ymin/e); n*e<= can->ymax; n++ ) {
    y = (int)(can->height*(1-(n*e-can->ymin)/w));
    DRAWLINE(display,d,drawGC,x0,y,x0+D,y);
    sprintf(buf,"%g",n*e);
    if ( can->xmax <= 0 ) {
#if !defined(VISUAL) && !defined(__MINGW32__)
      xadj = TEXTWIDTH(sffs,buf,strlen(buf));
#else
      SIZE size;

      GetTextExtentPoint32(d,buf,strlen(buf),&size);
      xadj = size.cx;
#endif
    }
    DRAWSTRING(display,d,scaleGC,x0+2-xadj,y+2,buf,strlen(buf));
  }
}

double adjust_scale(double e,double w){
  switch ( (int)floor(w/e) ) {
    case 1:
      return e/4; break;
    case 2: case 3:
      return e/2; break;
    case 4: case 5: case 6: case 7:
      return e; break;
      break;
    case 8: case 9: case 10: default:
      return 2*e; break;
  }
}

void initmarker(struct canvas *can,char *message){
#if defined(VISUAL) || defined(__MINGW32__)
  can->real_can->percentage = 0;
  can->real_can->prefix = message;
#else
  XawScrollbarSetThumb(can->xdone,0.0,0.0);
  XawScrollbarSetThumb(can->ydone,1.0,0.0);
  XFlush(display);
#endif
}

void marker(struct canvas *can,int dir,int p){
#if defined(VISUAL) || defined(__MINGW32__)
  if ( dir == DIR_X )
    can->real_can->percentage = (int)ceil((float)p/(float)can->real_can->width*100);
  else if ( dir == DIR_Y )
    can->real_can->percentage = (int)ceil((float)p/(float)can->real_can->height*100);
  else
    can->real_can->percentage = (int)ceil((float)p/(float)can->real_can->nzstep*100);
#else
  if ( dir == DIR_X ) {
    XawScrollbarSetThumb(can->xdone,(float)p/(float)can->width,0.05);
    count_and_flush();
  } else if ( dir == DIR_Y ) {
    XawScrollbarSetThumb(can->ydone,1.0-(float)p/(float)can->height,0.05);
    count_and_flush();
  } else {
    XawScrollbarSetThumb(can->ydone,1.0-(float)p/(float)can->nzstep,0.05);
    flush();
  }
#endif
}

void define_cursor(WINDOW w,CURSOR cur){
#if !defined(VISUAL) && !defined(__MINGW32__)
  XDefineCursor(display,w,cur); flush();
#endif
}

static int flush_count;
#if defined(linux) || defined(__FreeBSD__) || defined(__NetBSD__)
#define MAX_COUNT 64
#else
#define MAX_COUNT 32
#endif

void count_and_flush(){
#if !defined(VISUAL) && !defined(__MINGW32__)
  if ( ++flush_count == MAX_COUNT )
    flush();
#endif
}

void flush(){
#if !defined(VISUAL) && !defined(__MINGW32__)
  flush_count = 0;
  XFlush(display);
#endif
}