wine/objects/gdiobj.c

/*
 * GDI functions
 *
 * Copyright 1993 Alexandre Julliard
 */

#include <stdlib.h>
#include <stdio.h>
#include "color.h"
#include "bitmap.h"
#include "brush.h"
#include "dc.h"
#include "font.h"
#include "heap.h"
#include "options.h"
#include "palette.h"
#include "pen.h"
#include "region.h"
#include "debug.h"
#include "gdi.h"


/***********************************************************************
 *          GDI stock objects 
 */

static BRUSHOBJ WhiteBrush =
{
    { 0, BRUSH_MAGIC, 1 },             /* header */
    { BS_SOLID, RGB(255,255,255), 0 }  /* logbrush */
};

static BRUSHOBJ LtGrayBrush =
{
    { 0, BRUSH_MAGIC, 1 },             /* header */
/* FIXME : this should perhaps be BS_HATCHED, at least for 1 bitperpixel */
    { BS_SOLID, RGB(192,192,192), 0 }  /* logbrush */
};

static BRUSHOBJ GrayBrush =
{
    { 0, BRUSH_MAGIC, 1 },             /* header */
/* FIXME : this should perhaps be BS_HATCHED, at least for 1 bitperpixel */
    { BS_SOLID, RGB(128,128,128), 0 }  /* logbrush */
};

static BRUSHOBJ DkGrayBrush =
{
    { 0, BRUSH_MAGIC, 1 },          /* header */
/* This is BS_HATCHED, for 1 bitperpixel. This makes the spray work in pbrush */
/* NB_HATCH_STYLES is an index into HatchBrushes */
    { BS_HATCHED, RGB(0,0,0), NB_HATCH_STYLES }  /* logbrush */
};

static BRUSHOBJ BlackBrush =
{
    { 0, BRUSH_MAGIC, 1 },       /* header */
    { BS_SOLID, RGB(0,0,0), 0 }  /* logbrush */
};

static BRUSHOBJ NullBrush =
{
    { 0, BRUSH_MAGIC, 1 },  /* header */
    { BS_NULL, 0, 0 }       /* logbrush */
};

static PENOBJ WhitePen =
{
    { 0, PEN_MAGIC, 1 },                     /* header */
    { PS_SOLID, { 1, 0 }, RGB(255,255,255) } /* logpen */
};

static PENOBJ BlackPen =
{
    { 0, PEN_MAGIC, 1 },               /* header */
    { PS_SOLID, { 1, 0 }, RGB(0,0,0) } /* logpen */
};

static PENOBJ NullPen =
{
    { 0, PEN_MAGIC, 1 },      /* header */
    { PS_NULL, { 1, 0 }, 0 }  /* logpen */
};

static FONTOBJ OEMFixedFont =
{
    { 0, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, OEM_CHARSET,
      0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
/* Filler to make the location counter dword aligned again.  This is necessary
   since (a) FONTOBJ is packed, (b) gcc places initialised variables in the code
   segment, and (c) Solaris assembler is stupid.  */
static UINT16 align_OEMFixedFont = 1;

static FONTOBJ AnsiFixedFont =
{
    { 0, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
static UINT16 align_AnsiFixedFont = 1;

static FONTOBJ AnsiVarFont =
{
    { 0, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "MS Sans Serif" }
};
static UINT16 align_AnsiVarFont = 1;

static FONTOBJ SystemFont =
{
    { 0, FONT_MAGIC, 1 },
    { 16, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "System" }
};
static UINT16 align_SystemFont = 1;

static FONTOBJ DeviceDefaultFont =
{
    { 0, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "" }
};
static UINT16 align_DeviceDefaultFont = 1;

static FONTOBJ SystemFixedFont =
{
    { 0, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
static UINT16 align_SystemFixedFont = 1;

/* FIXME: Is this correct? */
static FONTOBJ DefaultGuiFont =
{
    { 9, FONT_MAGIC, 1 },   /* header */
    { 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
      0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "MS Sans Serif" }
};
static UINT16 align_DefaultGuiFont = 1;


static GDIOBJHDR * StockObjects[NB_STOCK_OBJECTS] =
{
    (GDIOBJHDR *) &WhiteBrush,
    (GDIOBJHDR *) &LtGrayBrush,
    (GDIOBJHDR *) &GrayBrush,
    (GDIOBJHDR *) &DkGrayBrush,
    (GDIOBJHDR *) &BlackBrush,
    (GDIOBJHDR *) &NullBrush,
    (GDIOBJHDR *) &WhitePen,
    (GDIOBJHDR *) &BlackPen,
    (GDIOBJHDR *) &NullPen,
    NULL,
    (GDIOBJHDR *) &OEMFixedFont,
    (GDIOBJHDR *) &AnsiFixedFont,
    (GDIOBJHDR *) &AnsiVarFont,
    (GDIOBJHDR *) &SystemFont,
    (GDIOBJHDR *) &DeviceDefaultFont,
    NULL,            /* DEFAULT_PALETTE created by PALETTE_Init */
    (GDIOBJHDR *) &SystemFixedFont,
    (GDIOBJHDR *) &DefaultGuiFont
};

/******************************************************************************
 *
 *   void  ReadFontInformation(
 *      char const  *fontName,
 *      FONTOBJ  *font,
 *      int  defHeight,
 *      int  defBold,
 *      int  defItalic,
 *      int  defUnderline,
 *      int  defStrikeOut )
 *
 *   ReadFontInformation() checks the Wine configuration file's Tweak.Fonts
 *   section for entries containing fontName.Height, fontName.Bold, etc.,
 *   where fontName is the name specified in the call (e.g., "System").  It
 *   attempts to be user friendly by accepting 'n', 'N', 'f', 'F', or '0' as
 *   the first character in the boolean attributes (bold, italic, and
 *   underline).
 *****************************************************************************/

static void  ReadFontInformation(
    char const *fontName,
    FONTOBJ *font,
    int  defHeight,
    int  defBold,
    int  defItalic,
    int  defUnderline,
    int  defStrikeOut )
{
    char  key[256];

    sprintf(key, "%s.Height", fontName);
    font->logfont.lfHeight =
	PROFILE_GetWineIniInt("Tweak.Fonts", key, defHeight);

    sprintf(key, "%s.Bold", fontName);
    font->logfont.lfWeight =
	(PROFILE_GetWineIniBool("Tweak.Fonts", key, defBold)) ?
	FW_BOLD : FW_NORMAL;

    sprintf(key, "%s.Italic", fontName);
    font->logfont.lfItalic =
	PROFILE_GetWineIniBool("Tweak.Fonts", key, defItalic);

    sprintf(key, "%s.Underline", fontName);
    font->logfont.lfUnderline =
	PROFILE_GetWineIniBool("Tweak.Fonts", key, defUnderline);

    sprintf(key, "%s.StrikeOut", fontName);
    font->logfont.lfStrikeOut =
	PROFILE_GetWineIniBool("Tweak.Fonts", key, defStrikeOut);

    return;
}


/***********************************************************************
 *           GDI_Init
 *
 * GDI initialization.
 */
BOOL32 GDI_Init(void)
{
    extern BOOL32 X11DRV_Init(void);
    extern BOOL32 DIB_Init(void);

    /* Kill some warnings.  */
    (void)align_OEMFixedFont;
    (void)align_AnsiFixedFont;
    (void)align_AnsiVarFont;
    (void)align_SystemFont;
    (void)align_DeviceDefaultFont;
    (void)align_SystemFixedFont;
    (void)align_DefaultGuiFont;

    /* TWEAK: Initialize font hints */
    ReadFontInformation("OEMFixed", &OEMFixedFont, 12, 0, 0, 0, 0);
    ReadFontInformation("AnsiFixed", &AnsiFixedFont, 12, 0, 0, 0, 0);
    ReadFontInformation("AnsiVar", &AnsiVarFont, 12, 0, 0, 0, 0);
    ReadFontInformation("System", &SystemFont, 16, 1, 0, 0, 0);
    ReadFontInformation("SystemFixed", &SystemFixedFont, 12, 1, 0, 0, 0);

    /* Initialize drivers */

    DIB_Init();	/* always before X11DRV_Init() */

    if( X11DRV_Init() )
    {
	/* Create default palette */

      /* DR well *this* palette can't be moveable (?) */

	HPALETTE16 hpalette = PALETTE_Init();

	if( hpalette )
	{
	    StockObjects[DEFAULT_PALETTE] = (GDIOBJHDR *)GDI_HEAP_LOCK( hpalette );
	    return TRUE;
	}
    }
    return FALSE;
}


/***********************************************************************
 *           GDI_AllocObject
 */
HGDIOBJ16 GDI_AllocObject( WORD size, WORD magic )
{
    static DWORD count = 0;
    GDIOBJHDR * obj;
    HGDIOBJ16 handle;
    if ( magic == DC_MAGIC || magic == METAFILE_DC_MAGIC )
      handle = GDI_HEAP_ALLOC( size );
    else 
      handle = GDI_HEAP_ALLOC_MOVEABLE( size );
    if (!handle) return 0;
    obj = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    obj->hNext   = 0;
    obj->wMagic  = magic;
    obj->dwCount = ++count;
    GDI_HEAP_UNLOCK( handle );
    return handle;
}


/***********************************************************************
 *           GDI_FreeObject
 */
BOOL32 GDI_FreeObject( HGDIOBJ16 handle )
{
    GDIOBJHDR * object;

      /* Can't free stock objects */
    if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
        return TRUE;
    
    object = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    if (!object) return FALSE;
    object->wMagic = 0;  /* Mark it as invalid */
 
      /* Free object */
    
    GDI_HEAP_FREE( handle );
    return TRUE;
}

/***********************************************************************
 *           GDI_GetObjPtr
 *
 * Return a pointer to the GDI object associated to the handle.
 * Return NULL if the object has the wrong magic number.
 * Movable GDI objects are locked in memory: it is up to the caller to unlock
 * it after the caller is done with the pointer.
 */
GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ16 handle, WORD magic )
{
    GDIOBJHDR * ptr = NULL;

    if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
      ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
    else 
      ptr = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    if (!ptr) return NULL;
    if ((magic != MAGIC_DONTCARE) && (ptr->wMagic != magic)) 
    {
      GDI_HEAP_UNLOCK( handle );
      return NULL;
    }
    return ptr;
}


/***********************************************************************
 *           DeleteObject16    (GDI.69)
 */
BOOL16 WINAPI DeleteObject16( HGDIOBJ16 obj )
{
    return DeleteObject32( obj );
}


/***********************************************************************
 *           DeleteObject32    (GDI32.70)
 */
BOOL32 WINAPI DeleteObject32( HGDIOBJ32 obj )
{
      /* Check if object is valid */

    GDIOBJHDR * header;
    if (HIWORD(obj)) return FALSE;
    if ((obj >= FIRST_STOCK_HANDLE) && (obj <= LAST_STOCK_HANDLE))
        return TRUE;
    if (!(header = (GDIOBJHDR *) GDI_HEAP_LOCK( obj ))) return FALSE;

    TRACE(gdi, "%04x\n", obj );

      /* Delete object */

    switch(header->wMagic)
    {
      case PEN_MAGIC:     return GDI_FreeObject( obj );
      case BRUSH_MAGIC:   return BRUSH_DeleteObject( obj, (BRUSHOBJ*)header );
      case FONT_MAGIC:    return GDI_FreeObject( obj );
      case PALETTE_MAGIC: return PALETTE_DeleteObject(obj,(PALETTEOBJ*)header);
      case BITMAP_MAGIC:  return BITMAP_DeleteObject( obj, (BITMAPOBJ*)header);
      case REGION_MAGIC:  return REGION_DeleteObject( obj, (RGNOBJ*)header );
    }
    return FALSE;
}


/***********************************************************************
 *           GetStockObject16    (GDI.87)
 */
HGDIOBJ16 WINAPI GetStockObject16( INT16 obj )
{
    return (HGDIOBJ16)GetStockObject32( obj );
}


/***********************************************************************
 *           GetStockObject32    (GDI32.220)
 */
HGDIOBJ32 WINAPI GetStockObject32( INT32 obj )
{
    if ((obj < 0) || (obj >= NB_STOCK_OBJECTS)) return 0;
    if (!StockObjects[obj]) return 0;
    TRACE(gdi, "returning %d\n",
                FIRST_STOCK_HANDLE + obj );
    return (HGDIOBJ16)(FIRST_STOCK_HANDLE + obj);
}


/***********************************************************************
 *           GetObject16    (GDI.82)
 */
INT16 WINAPI GetObject16( HANDLE16 handle, INT16 count, LPVOID buffer )
{
    GDIOBJHDR * ptr = NULL;
    INT16 result = 0;
    TRACE(gdi, "%04x %d %p\n", handle, count, buffer );
    if (!count) return 0;

    if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
      ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
    else
      ptr = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    if (!ptr) return 0;
    
    switch(ptr->wMagic)
      {
      case PEN_MAGIC:
	result = PEN_GetObject16( (PENOBJ *)ptr, count, buffer );
	break;
      case BRUSH_MAGIC: 
	result = BRUSH_GetObject16( (BRUSHOBJ *)ptr, count, buffer );
	break;
      case BITMAP_MAGIC: 
	result = BITMAP_GetObject16( (BITMAPOBJ *)ptr, count, buffer );
	break;
      case FONT_MAGIC:
	result = FONT_GetObject16( (FONTOBJ *)ptr, count, buffer );
	break;
      case PALETTE_MAGIC:
	result = PALETTE_GetObject( (PALETTEOBJ *)ptr, count, buffer );
	break;
      }
    GDI_HEAP_UNLOCK( handle );
    return result;
}


/***********************************************************************
 *           GetObject32A    (GDI32.204)
 */
INT32 WINAPI GetObject32A( HANDLE32 handle, INT32 count, LPVOID buffer )
{
    GDIOBJHDR * ptr = NULL;
    INT32 result = 0;
    TRACE(gdi, "%08x %d %p\n", handle, count, buffer );
    if (!count) return 0;

    if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
      ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
    else
      ptr = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    if (!ptr) return 0;
    
    switch(ptr->wMagic)
    {
      case PEN_MAGIC:
	  result = PEN_GetObject32( (PENOBJ *)ptr, count, buffer );
	  break;
      case BRUSH_MAGIC: 
	  result = BRUSH_GetObject32( (BRUSHOBJ *)ptr, count, buffer );
	  break;
      case BITMAP_MAGIC: 
	  result = BITMAP_GetObject32( (BITMAPOBJ *)ptr, count, buffer );
	  break;
      case FONT_MAGIC:
	  result = FONT_GetObject32A( (FONTOBJ *)ptr, count, buffer );
	  break;
      case PALETTE_MAGIC:
	  result = PALETTE_GetObject( (PALETTEOBJ *)ptr, count, buffer );
	  break;
      default:
          fprintf( stderr, "GetObject32: magic %04x not implemented\n",
                   ptr->wMagic );
          break;
    }
    GDI_HEAP_UNLOCK( handle );
    return result;
}

/***********************************************************************
 *           GetObjectType    (GDI32.205)
 */
DWORD WINAPI GetObjectType( HANDLE32 handle )
{
    GDIOBJHDR * ptr = NULL;
    INT32 result = 0;
    TRACE(gdi, "%08x\n", handle );

    if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
      ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
    else
      ptr = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
    if (!ptr) return 0;
    
    switch(ptr->wMagic)
    {
      case PEN_MAGIC:
	  result = OBJ_PEN;
	  break;
      case BRUSH_MAGIC: 
	  result = OBJ_BRUSH;
	  break;
      case BITMAP_MAGIC: 
	  result = OBJ_BITMAP;
	  break;
      case FONT_MAGIC:
	  result = OBJ_FONT;
	  break;
      case PALETTE_MAGIC:
	  result = OBJ_PAL;
	  break;
      case REGION_MAGIC:
	  result = OBJ_REGION;
	  break;
      case DC_MAGIC:
	  result = OBJ_DC;
	  break;
      case META_DC_MAGIC:
	  result = OBJ_METADC;
	  break;
      case METAFILE_MAGIC:
	  result = OBJ_METAFILE;
	  break;
      case METAFILE_DC_MAGIC:
	  result = OBJ_METADC;
	  break;

	  default:
	  fprintf( stderr, "GetObjectType: magic %04x not implemented\n",
			   ptr->wMagic );
	  break;
    }
    GDI_HEAP_UNLOCK( handle );
    return result;
}

/***********************************************************************
 *           GetObject32W    (GDI32.206)
 */
INT32 WINAPI GetObject32W( HANDLE32 handle, INT32 count, LPVOID buffer )
{
    return GetObject32A( handle, count, buffer );
}

/***********************************************************************
 *           GetCurrentObject    	(GDI32.166)
 */
HANDLE32 WINAPI GetCurrentObject(HDC32 hdc,UINT32 type)
{
    DC * dc = DC_GetDCPtr( hdc );

    if (!dc) 
    	return 0;
    switch (type) {
    case OBJ_PEN:	return dc->w.hPen;
    case OBJ_BRUSH:	return dc->w.hBrush;
    case OBJ_PAL:	return dc->w.hPalette;
    case OBJ_FONT:	return dc->w.hFont;
    case OBJ_BITMAP:	return dc->w.hBitmap;
    default:
    	/* the SDK only mentions those above */
    	fprintf(stderr,"GetCurrentObject(%08x,%d), unknown type.\n",hdc,type);
	return 0;
    }
}


/***********************************************************************
 *           SelectObject16    (GDI.45)
 */
HGDIOBJ16 WINAPI SelectObject16( HDC16 hdc, HGDIOBJ16 handle )
{
    return (HGDIOBJ16)SelectObject32( hdc, handle );
}


/***********************************************************************
 *           SelectObject32    (GDI32.299)
 */
HGDIOBJ32 WINAPI SelectObject32( HDC32 hdc, HGDIOBJ32 handle )
{
    DC * dc = DC_GetDCPtr( hdc );
    if (!dc || !dc->funcs->pSelectObject) return 0;
    TRACE(gdi, "hdc=%04x %04x\n", hdc, handle );
    return dc->funcs->pSelectObject( dc, handle );
}


/***********************************************************************
 *           UnrealizeObject16    (GDI.150)
 */
BOOL16 WINAPI UnrealizeObject16( HGDIOBJ16 obj )
{
    return UnrealizeObject32( obj );
}


/***********************************************************************
 *           UnrealizeObject    (GDI32.358)
 */
BOOL32 WINAPI UnrealizeObject32( HGDIOBJ32 obj )
{
    BOOL32 result = TRUE;
  /* Check if object is valid */

    GDIOBJHDR * header = (GDIOBJHDR *) GDI_HEAP_LOCK( obj );
    if (!header) return FALSE;

    TRACE(gdi, "%04x\n", obj );

      /* Unrealize object */

    switch(header->wMagic)
    {
    case PALETTE_MAGIC: 
        result = PALETTE_UnrealizeObject( obj, (PALETTEOBJ *)header );
	break;

    case BRUSH_MAGIC:
        /* Windows resets the brush origin. We don't need to. */
        break;
    }
    GDI_HEAP_UNLOCK( obj );
    return result;
}


/***********************************************************************
 *           EnumObjects16    (GDI.71)
 */
INT16 WINAPI EnumObjects16( HDC16 hdc, INT16 nObjType,
                            GOBJENUMPROC16 lpEnumFunc, LPARAM lParam )
{
    /* Solid colors to enumerate */
    static const COLORREF solid_colors[] =
    { RGB(0x00,0x00,0x00), RGB(0xff,0xff,0xff),
      RGB(0xff,0x00,0x00), RGB(0x00,0xff,0x00),
      RGB(0x00,0x00,0xff), RGB(0xff,0xff,0x00),
      RGB(0xff,0x00,0xff), RGB(0x00,0xff,0xff),
      RGB(0x80,0x00,0x00), RGB(0x00,0x80,0x00),
      RGB(0x80,0x80,0x00), RGB(0x00,0x00,0x80),
      RGB(0x80,0x00,0x80), RGB(0x00,0x80,0x80),
      RGB(0x80,0x80,0x80), RGB(0xc0,0xc0,0xc0)
    };
    
    INT16 i, retval = 0;
    LOGPEN16 *pen;
    LOGBRUSH16 *brush = NULL;

    TRACE(gdi, "%04x %d %08lx %08lx\n",
                 hdc, nObjType, (DWORD)lpEnumFunc, lParam );
    switch(nObjType)
    {
    case OBJ_PEN:
        /* Enumerate solid pens */
        if (!(pen = SEGPTR_NEW(LOGPEN16))) break;
        for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
        {
            pen->lopnStyle   = PS_SOLID;
            pen->lopnWidth.x = 1;
            pen->lopnWidth.y = 0;
            pen->lopnColor   = solid_colors[i];
            retval = lpEnumFunc( SEGPTR_GET(pen), lParam );
            TRACE(gdi, "solid pen %08lx, ret=%d\n",
                         solid_colors[i], retval);
            if (!retval) break;
        }
        SEGPTR_FREE(pen);
        break;

    case OBJ_BRUSH:
        /* Enumerate solid brushes */
        if (!(brush = SEGPTR_NEW(LOGBRUSH16))) break;
        for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
        {
            brush->lbStyle = BS_SOLID;
            brush->lbColor = solid_colors[i];
            brush->lbHatch = 0;
            retval = lpEnumFunc( SEGPTR_GET(brush), lParam );
            TRACE(gdi, "solid brush %08lx, ret=%d\n",
                         solid_colors[i], retval);
            if (!retval) break;
        }

        /* Now enumerate hatched brushes */
        if (retval) for (i = HS_HORIZONTAL; i <= HS_DIAGCROSS; i++)
        {
            brush->lbStyle = BS_HATCHED;
            brush->lbColor = RGB(0,0,0);
            brush->lbHatch = i;
            retval = lpEnumFunc( SEGPTR_GET(brush), lParam );
            TRACE(gdi, "hatched brush %d, ret=%d\n",
                         i, retval);
            if (!retval) break;
        }
        SEGPTR_FREE(brush);
        break;

    default:
        fprintf( stderr, "EnumObjects16: invalid type %d\n", nObjType );
        break;
    }
    return retval;
}


/***********************************************************************
 *           EnumObjects32    (GDI32.89)
 */
INT32 WINAPI EnumObjects32( HDC32 hdc, INT32 nObjType,
                            GOBJENUMPROC32 lpEnumFunc, LPARAM lParam )
{
    /* Solid colors to enumerate */
    static const COLORREF solid_colors[] =
    { RGB(0x00,0x00,0x00), RGB(0xff,0xff,0xff),
      RGB(0xff,0x00,0x00), RGB(0x00,0xff,0x00),
      RGB(0x00,0x00,0xff), RGB(0xff,0xff,0x00),
      RGB(0xff,0x00,0xff), RGB(0x00,0xff,0xff),
      RGB(0x80,0x00,0x00), RGB(0x00,0x80,0x00),
      RGB(0x80,0x80,0x00), RGB(0x00,0x00,0x80),
      RGB(0x80,0x00,0x80), RGB(0x00,0x80,0x80),
      RGB(0x80,0x80,0x80), RGB(0xc0,0xc0,0xc0)
    };
    
    INT32 i, retval = 0;
    LOGPEN32 pen;
    LOGBRUSH32 brush;

    TRACE(gdi, "%04x %d %08lx %08lx\n",
                 hdc, nObjType, (DWORD)lpEnumFunc, lParam );
    switch(nObjType)
    {
    case OBJ_PEN:
        /* Enumerate solid pens */
        for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
        {
            pen.lopnStyle   = PS_SOLID;
            pen.lopnWidth.x = 1;
            pen.lopnWidth.y = 0;
            pen.lopnColor   = solid_colors[i];
            retval = lpEnumFunc( &pen, lParam );
            TRACE(gdi, "solid pen %08lx, ret=%d\n",
                         solid_colors[i], retval);
            if (!retval) break;
        }
        break;

    case OBJ_BRUSH:
        /* Enumerate solid brushes */
        for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
        {
            brush.lbStyle = BS_SOLID;
            brush.lbColor = solid_colors[i];
            brush.lbHatch = 0;
            retval = lpEnumFunc( &brush, lParam );
            TRACE(gdi, "solid brush %08lx, ret=%d\n",
                         solid_colors[i], retval);
            if (!retval) break;
        }

        /* Now enumerate hatched brushes */
        if (retval) for (i = HS_HORIZONTAL; i <= HS_DIAGCROSS; i++)
        {
            brush.lbStyle = BS_HATCHED;
            brush.lbColor = RGB(0,0,0);
            brush.lbHatch = i;
            retval = lpEnumFunc( &brush, lParam );
            TRACE(gdi, "hatched brush %d, ret=%d\n",
                         i, retval);
            if (!retval) break;
        }
        break;

    default:
        /* FIXME: implement Win32 types */
        fprintf( stderr, "EnumObjects32: invalid type %d\n", nObjType );
        break;
    }
    return retval;
}


/***********************************************************************
 *           IsGDIObject    (GDI.462)
 * 
 * returns type of object if valid (W95 system programming secrets p. 264-5)
 */
BOOL16 WINAPI IsGDIObject( HGDIOBJ16 handle )
{
    if (handle >= FIRST_STOCK_HANDLE ) 
	return TRUE;
    else
    {
	GDIOBJHDR *object = (GDIOBJHDR *) GDI_HEAP_LOCK( handle );
	if (object)
	{
	    UINT16 magic = object->wMagic;
	    GDI_HEAP_UNLOCK( handle );
	    if (magic >= PEN_MAGIC && magic <= METAFILE_DC_MAGIC)
		return magic - PEN_MAGIC + 1;
	}
    }
    return FALSE;
}


/***********************************************************************
 *           SetObjectOwner16    (GDI.461)
 */
void WINAPI SetObjectOwner16( HGDIOBJ16 handle, HANDLE16 owner )
{
    /* Nothing to do */
}


/***********************************************************************
 *           SetObjectOwner32    (GDI32.386)
 */
void WINAPI SetObjectOwner32( HGDIOBJ32 handle, HANDLE32 owner )
{
    /* Nothing to do */
}

/***********************************************************************
 *           GdiFlush    (GDI32.128)
 */
BOOL32 WINAPI GdiFlush(void)
{
    return TRUE;  /* FIXME */
}


/***********************************************************************
 *           GdiGetBatchLimit    (GDI32.129)
 */
DWORD WINAPI GdiGetBatchLimit(void)
{
    return 1;  /* FIXME */
}


/***********************************************************************
 *           GdiSetBatchLimit    (GDI32.139)
 */
DWORD WINAPI GdiSetBatchLimit( DWORD limit )
{
    return 1; /* FIXME */
}


/***********************************************************************
 *           GdiSeeGdiDo   (GDI.452)
 */
DWORD WINAPI GdiSeeGdiDo( WORD wReqType, WORD wParam1, WORD wParam2,
                          WORD wParam3 )
{
    switch (wReqType)
    {
    case 0x0001:  /* LocalAlloc */
        return LOCAL_Alloc( GDI_HeapSel, wParam1, wParam3 );
    case 0x0002:  /* LocalFree */
        return LOCAL_Free( GDI_HeapSel, wParam1 );
    case 0x0003:  /* LocalCompact */
        return LOCAL_Compact( GDI_HeapSel, wParam3, 0 );
    case 0x0103:  /* LocalHeap */
        return GDI_HeapSel;
    default:
        fprintf(stderr, "GdiSeeGdiDo: wReqType %04x (unknown)", wReqType);
        return (DWORD)-1;
    }
}

/***********************************************************************
 *           MulDiv16   (GDI.128)
 */
INT16 WINAPI MulDiv16( INT16 foo, INT16 bar, INT16 baz )
{
    INT32 ret;
    if (!baz) return -32768;
    ret = (foo * bar) / baz;
    if ((ret > 32767) || (ret < -32767)) return -32768;
    return ret;
}


/***********************************************************************
 *           MulDiv32   (KERNEL32.391)
 * RETURNS
 *	Result of multiplication and division
 *	-1: Overflow occurred or Divisor was 0
 */
INT32 WINAPI MulDiv32(
	     INT32 nMultiplicand, 
	     INT32 nMultiplier,
	     INT32 nDivisor
) {
#if (SIZEOF_LONG_LONG >= 8)
    long long ret;
    if (!nDivisor) return -1;
    ret = ((long long)nMultiplicand * nMultiplier) / nDivisor;
    if ((ret > 2147483647) || (ret < -2147483647)) return -1;
    return ret;
#else
    if (!nDivisor) return -1;
    return (nMultiplicand * nMultiplier) / nDivisor;
#endif
}