/* Copyright 1994, 1995 by Abacus Research and
 * Development, Inc.  All rights reserved.
 */

#if !defined (OMIT_RCSID_STRINGS)
char ROMlib_rcsid_qCGrafport[] =
	"$Id: qCGrafPort.c 63 2004-12-24 18:19:43Z ctm $";
#endif


#include "rsys/common.h"
#include "QuickDraw.h"
#include "CQuickDraw.h"
#include "MemoryMgr.h"
#include "ResourceMgr.h"

#include "rsys/quick.h"
#include "rsys/cquick.h"
#include "rsys/mman.h"

#include "rsys/myabort.h"
#include "rsys/assert.h"

#include "rsys/xdata.h"
#include "rsys/evil.h"

P1 (PUBLIC pascal trap, void, OpenCPort,
    CGrafPtr, port)
{
  PixPatHandle temp_pixpat;
  
  /* set up port version before using any other macros */
  port->portVersion = CWC ((3 << 14) | /* color quickdraw version */ 0);
  
  /* allocate storage for new CGrafPtr members, including portPixMap,
     pnPixPat, fillPixPat, bkPixPat, and grafVar */
  CPORT_PIXMAP_X (port) = RM (NewPixMap ());
  
  /* Free up the empty color table, since we're not going to use it. */
  DisposHandle ((Handle) PIXMAP_TABLE (CPORT_PIXMAP (port)));
  
  temp_pixpat = NewPixPat ();
  PIXPAT_TYPE_X (temp_pixpat) = CWC (pixpat_type_orig);
  CPORT_PEN_PIXPAT_X (port) = RM (temp_pixpat);
  
  temp_pixpat = NewPixPat ();
  PIXPAT_TYPE_X (temp_pixpat) = CWC (pixpat_type_orig);
  CPORT_FILL_PIXPAT_X (port) = RM (temp_pixpat);
  
  temp_pixpat = NewPixPat ();
  PIXPAT_TYPE_X (temp_pixpat) = CWC (pixpat_type_orig);
  CPORT_BK_PIXPAT_X (port) = RM (temp_pixpat);
  
  CPORT_GRAFVARS_X (port) = RM (NewHandleClear (sizeof (GrafVars)));
  
  /* allocate storage for members also present in GrafPort */
  PORT_VIS_REGION_X (port) = RM (NewRgn ());
  PORT_CLIP_REGION_X (port) = RM (NewRgn ());
  
  InitCPort (port);
}

P1 (PUBLIC pascal trap, void, CloseCPort, CGrafPtr, port)
{
  ClosePort ((GrafPtr) port);
}


/* FIXME:
   do these belong here */

P1 (PUBLIC pascal trap, void, InitCPort,
    CGrafPtr, p)
{
  GDHandle gd;
  RgnHandle rh;

  if (!p || !CGrafPort_p (p))
    return;
  
  /* set the port early so we can call convenience functions
     that operate on thePort */
  SetPort ((GrafPtr) p);
  
  CPORT_VERSION_X (p) = (CPORT_FLAG_BITS_X
			 | CWC (/* color quickdraw version */ 0));
  
  gd = MR (TheGDevice);
  *STARH (CPORT_PIXMAP (p)) = *STARH (GD_PMAP (gd));
    
  PORT_DEVICE_X (p)      = CWC (0);
  PORT_RECT (p)          = GD_RECT (gd);
  PORT_PEN_LOC (p).h     = PORT_PEN_LOC (p).v  = CWC (0);
  PORT_PEN_SIZE (p).h    = PORT_PEN_SIZE (p).v = CWC (1);
  PORT_PEN_MODE_X (p)    = CWC (patCopy);
  PORT_PEN_VIS_X (p)     = CWC (0);
  PORT_TX_FONT_X (p)     = CWC (0);
  PORT_TX_FACE_X (p)     = 0;
  *((char *)&p->txFace + 1) = 0; /* Excel & tests show we need to do this. */
  PORT_TX_MODE_X (p)     = CWC (srcOr);
  PORT_TX_SIZE_X (p)     = CWC (0);
  PORT_SP_EXTRA_X (p)    = CWC (0);
  RGBForeColor (&ROMlib_black_rgb_color);
  RGBBackColor (&ROMlib_white_rgb_color);
  PORT_COLR_BIT_X (p)    = CWC (0);
  PORT_PAT_STRETCH_X (p) = CWC (0);
  PORT_PIC_SAVE_X (p)    = CLC_NULL;
  PORT_REGION_SAVE_X (p) = CLC_NULL;
  PORT_POLY_SAVE_X (p)   = CLC_NULL;
  PORT_GRAF_PROCS_X (p)  = CLC_NULL;

  PenPat (black);
  BackPat (white);
  
  /* hack */
  ROMlib_fill_pat (black);
  
  /* initialize default values for newly allocated
     CGrafPtr */
  PORT_DEVICE_X (p) = CWC (0);

  /* rgbOpColor of GrafVars field is set to black,
     rgbHiliteColor is set to the default value (where does this come from)
     and all other fields are zero'd */
  
  /* A test case shows that grafVars is allocated only if it was NULL. */
  if (CPORT_GRAFVARS_X (p) == CLC_NULL)
    CPORT_GRAFVARS_X (p) = RM (NewHandleClear (sizeof (GrafVars)));

  /* #warning "p->grafVars not initialized" */

  CPORT_OP_COLOR (p) = ROMlib_black_rgb_color;
  CPORT_HILITE_COLOR (p) = HiliteRGB;
  
  CPORT_CH_EXTRA_X (p) = CWC (0);
  /* represents the low word of a Fixed number
     whose value is 0.5 */
  CPORT_PENLOC_HFRAC_X (p) = CWC (0x8000);

  rh = PORT_VIS_REGION (p);
  SetEmptyRgn (rh);
  RectRgn (rh, &GD_RECT (gd));

  rh = PORT_CLIP_REGION (p);
  SetEmptyRgn (rh);
  SetRectRgn (rh, -32767, -32767, 32767, 32767);
}

P1 (PUBLIC pascal trap, void, SetPortPix, PixMapHandle, pixmap)
{
  CPORT_PIXMAP_X (theCPort) = RM (pixmap);
}

static const LONGINT high_bits_to_colors[2][2][2] =
{
  {
    { blackColor, blueColor, }, { greenColor, cyanColor },
  },
  {
    { redColor, magentaColor, }, { yellowColor, whiteColor },
  },
};

P1 (PUBLIC pascal trap, void, RGBForeColor,
    RGBColor *, color)
{
  if (CGrafPort_p (thePort))
    {
      CPORT_RGB_FG_COLOR (theCPort) = *color;

      /* pick the best color and store it into `theCPort->fgColor' */
      PORT_FG_COLOR_X (theCPort) = CL (Color2Index (color));
    }
  else
    {
      /* GrafPort */
      int basic_qd_color;

      basic_qd_color
	= high_bits_to_colors
	  [CW (color->red) >> 15]
	  [CW (color->green) >> 15]
	  [CW (color->blue) >> 15];
      
      ForeColor (basic_qd_color);
    }
}

P1 (PUBLIC pascal trap, void, RGBBackColor,
    RGBColor *, color)
{

#if defined (EVIL_ILLUSTRATOR_7_HACK)
  if (ROMlib_evil_illustrator_7_hack)
    {
      color = alloca (sizeof (RGBColor));
      color->red = 65535;
      color->green = 65535;
      color->blue = 65535;
    }
#endif

  if (CGrafPort_p (thePort))
    {
      CPORT_RGB_BK_COLOR (theCPort) = *color;

      /* pick the best color and store it into `theCPort->bkColor' */
      PORT_BK_COLOR_X (theCPort) = CL (Color2Index (color));
    }
  else
    {
      /* GrafPort */
      int basic_qd_color;

      basic_qd_color
	= high_bits_to_colors
	  [CW (color->red) >> 15]
	  [CW (color->green) >> 15]
	  [CW (color->blue) >> 15];
	
      BackColor (basic_qd_color);
    }
}

P1 (PUBLIC pascal trap, void, GetForeColor,
    RGBColor *, color)
{
  if (CGrafPort_p (thePort))
    *color = CPORT_RGB_FG_COLOR (theCPort);
  else
    *color = *(ROMlib_qd_color_to_rgb (PORT_FG_COLOR (thePort)));
}

P1 (PUBLIC pascal trap, void, GetBackColor,
    RGBColor *, color)
{
  if (CGrafPort_p (thePort))
    *color = CPORT_RGB_BK_COLOR (theCPort);
  else
    *color = *(ROMlib_qd_color_to_rgb (PORT_BK_COLOR (thePort)));
}

P1 (PUBLIC pascal trap, void, PenPixPat,
    PixPatHandle, new_pen)
{
  if (CGrafPort_p (thePort))
    {
      PixPatHandle old_pen;

      old_pen = CPORT_PEN_PIXPAT (theCPort);
      if (old_pen == new_pen)
	return;


      if (old_pen && (PIXPAT_TYPE_X (old_pen) == CWC (pixpat_type_orig)))
	DisposPixPat (old_pen);
	
      CPORT_PEN_PIXPAT_X (theCPort) = RM (new_pen);
    }
  else
    PATASSIGN (PORT_PEN_PAT (thePort), PIXPAT_1DATA (new_pen));
}

P1 (PUBLIC pascal trap, void, BackPixPat,
    PixPatHandle, new_bk)
{
  if (CGrafPort_p (thePort))
    {
      PixPatHandle old_bk;

      old_bk = CPORT_BK_PIXPAT (theCPort);
      if (old_bk == new_bk)
	return;

      if (old_bk && PIXPAT_TYPE_X (old_bk) == CWC (pixpat_type_orig))
	DisposPixPat (old_bk);
      
      CPORT_BK_PIXPAT_X (theCPort) = RM (new_bk);
    }
  else
    PATASSIGN (PORT_BK_PAT (thePort), PIXPAT_1DATA (new_bk));
}

void
ROMlib_fill_pixpat (PixPatHandle new_fill)
{
  if (CGrafPort_p (thePort))
    {
      PixPatHandle old_fill;
      
      old_fill = CPORT_FILL_PIXPAT (theCPort);
      if (old_fill == new_fill)
	return;

#if 0
      if (PIXPAT_TYPE_X (old_fill) == CWC (pixpat_type_orig))
	DisposPixPat (old_fill);
#endif
      
      CPORT_FILL_PIXPAT_X (theCPort) = RM (new_fill);
    }
  else
    PATASSIGN (PORT_BK_PAT (thePort), PIXPAT_1DATA (new_fill));
}

/* where is FillPixPat */

P1 (PUBLIC pascal trap, void, OpColor,
    RGBColor *, color)
{
  if (! CGrafPort_p (thePort))
    return;

  HxX (CPORT_GRAFVARS (theCPort), rgbOpColor) = *color;
}


P1 (PUBLIC pascal trap, void, HiliteColor,
    RGBColor *, color)
{
  if (! CGrafPort_p (thePort))
    return;

  HxX (CPORT_GRAFVARS (theCPort), rgbHiliteColor) = *color;
}

/* PixMap operations */

P0 (PUBLIC pascal trap, PixMapHandle, NewPixMap)
{
  PixMapHandle pixmap;
  
  pixmap = (PixMapHandle) NewHandle (sizeof (PixMap));
  if (pixmap == NULL)
    {
#if defined (FLAG_ALLOCATION_FAILURES)
      gui_fatal ("allocation failure");
#endif
      return NULL;
    }
  
  HLock ((Handle) pixmap);    /* so we can use accessor macros even when we're
  				calling routines that move memory */

  /* All PixMap fields except the ColorTable come from TheGDevice.
   * The ColorTable is allocated but not initialized.  (IMV-70)
   */
  if (TheGDevice)
    {
      *STARH(pixmap) = *STARH(GD_PMAP(MR(TheGDevice)));
    }
  else
    {
      /* If TheGDevice is NULL, we fill in some useful default values.
       * This is a hack to make Executor bootstrap properly.
       */
      memset (STARH (pixmap), 0, sizeof (PixMap));
      HxX (pixmap, rowBytes)       = PIXMAP_DEFAULT_ROWBYTES_X;
      PIXMAP_HRES_X (pixmap)       = PIXMAP_VRES_X (pixmap) = CWC (72);
      PIXMAP_PIXEL_TYPE_X (pixmap) = CWC (chunky_pixel_type);
      PIXMAP_CMP_COUNT_X (pixmap)  = CWC (1);
    }

  /* The ColorTable is set to an empty ColorTable (IMV-70). */
  PIXMAP_TABLE_X (pixmap)
    = (CTabHandle) RM (NewHandleClear (sizeof (ColorTable)));
  
  HUnlock ((Handle) pixmap);
  return pixmap;
}

P1 (PUBLIC pascal trap, void, DisposPixMap,
    PixMapHandle, pixmap)
{
  if (pixmap)
    {
      DisposCTable (PIXMAP_TABLE (pixmap));
      DisposHandle ((Handle) pixmap);
    }
}

P2 (PUBLIC pascal trap, void, CopyPixMap,
    PixMapHandle, src,
    PixMapHandle, dst)
{
  CTabHandle dst_ctab;

  /* save away the destination ctab; it is going to get clobbered. */
  dst_ctab = PIXMAP_TABLE (dst);
  
/* #warning "determine actual CopyPixMap behavior" */
  *(STARH (dst)) = *(STARH (src));
  
  PIXMAP_TABLE_X (dst) = RM (dst_ctab);
  ROMlib_copy_ctab (PIXMAP_TABLE (src), dst_ctab);
}

/* PixPat operations */

P0 (PUBLIC pascal trap, PixPatHandle, NewPixPat)
{
  PixPatHandle pixpat;
  Handle xdata;
  
  pixpat = (PixPatHandle) NewHandle (sizeof (PixPat));
  
  xdata = NewHandleClear (sizeof (xdata_t));
  
  HASSIGN_6 (pixpat,
	     patMap,    RM (NewPixMap ()),
	     patData,   RM (NewHandle (0)),
	     patType,   CWC (pixpat_type_color),
	     patXMap,   CLC_NULL,
	     patXData,  RM (xdata),
	     patXValid, CWC (-1));
  
  return pixpat;
}

struct pixpat_res
{
  PixPat pixpat;
  PixMap patmap;
};

typedef struct pixpat_res *pixpat_res_ptr;
typedef struct { pixpat_res_ptr p PACKED_P; } HIDDEN_pixpat_res_ptr;
typedef HIDDEN_pixpat_res_ptr *pixpat_res_handle;


P1 (PUBLIC pascal trap, PixPatHandle, GetPixPat, INTEGER, pixpat_id)
{
  pixpat_res_handle pixpat_res;
  PixPatHandle pixpat;
  PixMapHandle patmap;
  int pixpat_data_offset, pixpat_data_size;
  CTabPtr ctab_ptr;
  int ctab_size;
  Handle xdata;

  pixpat_res = (pixpat_res_handle) GetResource (TICK ("ppat"), pixpat_id);
  if (pixpat_res == NULL)
    return (PixPatHandle) NULL;
  if (pixpat_res->p == NULL)
    LoadResource ((Handle) pixpat_res);
  
  pixpat = (PixPatHandle) NewHandle (sizeof (PixPat));
  patmap = (PixMapHandle) NewHandle (sizeof (PixMap));
  *STARH (pixpat) = HxX (pixpat_res, pixpat);
  *STARH (patmap) = HxX (pixpat_res, patmap);

  {
    int pixpat_type;
    
    pixpat_type = PIXPAT_TYPE (pixpat);

    /* ### are `rgb' (and `old_style'?) valid pattern types for pixpat
       resources */
    if (pixpat_type != pixpat_old_style_pattern
	&& pixpat_type != pixpat_color_pattern
	&& pixpat_type != pixpat_rgb_pattern)
      {
	warning_unexpected ("unknown pixpat type `%d'",
			    PIXPAT_TYPE (pixpat));
	PIXPAT_TYPE_X (pixpat) = CWC (pixpat_color_pattern);
      }
  }
  
  gui_assert ((int) PIXPAT_MAP_X (pixpat) == CLC (sizeof (PixPat)));
  
  PIXPAT_MAP_X (pixpat) = RM (patmap);
  
  PIXPAT_XVALID_X (pixpat) = CWC (-1);
  
  xdata = NewHandle (sizeof (xdata_t));
  memset (STARH (xdata), 0, sizeof (xdata_t));
  PIXPAT_XDATA_X (pixpat)  = RM (xdata);
  PIXPAT_XMAP_X (pixpat)   = CLC_NULL;
  
  pixpat_data_offset = PIXPAT_DATA_AS_OFFSET (pixpat);
  pixpat_data_size = (PIXMAP_TABLE_AS_OFFSET (patmap)
		      - pixpat_data_offset);
  
  HLock((Handle) pixpat);
  PIXPAT_DATA_X (pixpat) = RM (NewHandle (pixpat_data_size));
  HUnlock((Handle) pixpat);
  
  BlockMove ((Ptr) ((char *) STARH (pixpat_res) + pixpat_data_offset),
	     STARH (PIXPAT_DATA (pixpat)),
	     pixpat_data_size);
  
  LOCK_HANDLE_EXCURSION_1
    (pixpat_res,
     {
       /* ctab_ptr is a pointer into the pixpat_res_handle;
	  make sure no allocations are done while it is in use */
       ctab_ptr = (CTabPtr) ((char *) STARH (pixpat_res)
			     + (int) PIXMAP_TABLE_AS_OFFSET (patmap));
       ctab_size = (sizeof (ColorTable)
		    + (sizeof (ColorSpec) * CW (ctab_ptr->ctSize)));
       
       /* SetHandleSize ((Handle) PIXMAP_TABLE (patmap), ctab_size); */
       
       HLock ((Handle) patmap);
       PIXMAP_TABLE_X (patmap) = (CTabHandle) RM (NewHandle (ctab_size));
       HUnlock ((Handle) patmap);
       
       BlockMove ((Ptr) ctab_ptr, 
		  (Ptr) STARH (PIXMAP_TABLE (patmap)),
		  ctab_size);

       /* ctab_ptr->ctSeed = CL (GetCTSeed ()); */
       CTAB_SEED_X (PIXMAP_TABLE (patmap)) = CL (GetCTSeed ());
     });
  
#if 0
  gui_assert (GetHandleSize (pixpat_res)
	      == (sizeof (struct pixpat_res)
		  + pixpat_data_size
		  + ctab_size));
#endif /* 0 */
  
  return pixpat;
}

P1 (PUBLIC pascal trap, void, DisposPixPat,
    PixPatHandle, pixpat_h)
{
  if (pixpat_h)
    {
      /* ##### determine which of these checks are necessary, and which
	 should be asserts that the handles are non-NULL */
      if (PIXPAT_MAP_X (pixpat_h))
	DisposPixMap (PIXPAT_MAP (pixpat_h));
      if (PIXPAT_DATA_X (pixpat_h))
	DisposHandle (PIXPAT_DATA (pixpat_h));
      /* We ignore the xmap field, so no need to free it. */
      if (PIXPAT_XDATA_X (pixpat_h))
	xdata_free ((xdata_handle_t) PIXPAT_XDATA (pixpat_h));
      
      DisposHandle ((Handle) pixpat_h);
    }
}

P2 (PUBLIC pascal trap, void, CopyPixPat,
    PixPatHandle, src,
    PixPatHandle, dst)
{
  int data_size;
  
  PIXPAT_TYPE_X (dst) = PIXPAT_TYPE_X (src);
  CopyPixMap (PIXPAT_MAP (src), PIXPAT_MAP (dst));

  data_size = GetHandleSize (PIXPAT_DATA (src));
  SetHandleSize (PIXPAT_DATA (dst), data_size);
  memcpy (STARH (PIXPAT_DATA (dst)), STARH (PIXPAT_DATA (src)), data_size);
  PIXPAT_XVALID_X (dst) = CWC (-1);
  PATASSIGN (PIXPAT_1DATA (dst), PIXPAT_1DATA (src));
}

P2 (PUBLIC pascal trap, void, MakeRGBPat,
    PixPatHandle, pixpat,
    RGBColor *, color)
{
  PixMapHandle patmap;

  PIXPAT_TYPE_X (pixpat) = CWC (pixpat_rgb_pattern);
  PIXPAT_XVALID_X (pixpat) = CWC (-1);

  /* ##### resolve the meaning of the actual PixPat fields */
  
  patmap = PIXPAT_MAP (pixpat);
  PIXMAP_SET_ROWBYTES_X (patmap, CWC (2));
  PIXMAP_BOUNDS (patmap) = ROMlib_pattern_bounds;
  /* create a table with 5 entries, the last of which
     will be the desired rgb color */
  SetHandleSize ((Handle) PIXMAP_TABLE (patmap),
		 (Size) (sizeof (ColorTable) + (4 * sizeof (ColorSpec))));
  
  CTAB_SEED_X (PIXMAP_TABLE (patmap)) = CL (GetCTSeed ());
  CTAB_SIZE_X (PIXMAP_TABLE (patmap)) = CWC (5);
  CTAB_TABLE (PIXMAP_TABLE (patmap))[4].rgb = *color;
}