text: /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %                            EEEEE  M   M  FFFFF                              %
  %                            E      MM MM  F                                  %
  %                            EEE    M M M  FFF                                %
  %                            E      M   M  F                                  %
  %                            EEEEE  M   M  F                                  %
  %                                                                             %
  %                                                                             %
  %                  Read Windows Enahanced Metafile Format                     %
  %                                                                             %
  %                              Software Design                                %
  %                              Bill Radcliffe                                 %
  %                                   2001                                      %
  %                                                                             %
  %  Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization      %
  %  dedicated to making software imaging solutions freely available.           %
  %                                                                             %
  %  You may not use this file except in compliance with the License.  You may  %
  %  obtain a copy of the License at                                            %
  %                                                                             %
  %    http://www.imagemagick.org/script/license.php                            %
  %                                                                             %
  %  Unless required by applicable law or agreed to in writing, software        %
  %  distributed under the License is distributed on an "AS IS" BASIS,          %
  %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  %  See the License for the specific language governing permissions and        %
  %  limitations under the License.                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  */
  
  /*
   * Include declarations.
   */
  
  #include "magick/studio.h"
  #if defined(MAGICKCORE_WINGDI32_DELEGATE)
  #  if defined(__CYGWIN__)
  #    include <windows.h>
  #  else
       /* All MinGW needs ... */
  #    include <wingdi.h>
  #  endif
  #endif
  
  #include "magick/blob.h"
  #include "magick/blob-private.h"
  #include "magick/cache.h"
  #include "magick/exception.h"
  #include "magick/exception-private.h"
  #include "magick/geometry.h"
  #include "magick/image.h"
  #include "magick/image-private.h"
  #include "magick/list.h"
  #include "magick/magick.h"
  #include "magick/memory_.h"
  #include "magick/quantum-private.h"
  #include "magick/static.h"
  #include "magick/string_.h"
  #include "magick/module.h"
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   I s E F M                                                                 %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  IsEMF() returns MagickTrue if the image format type, identified by the
  %  magick string, is a Microsoft Windows Enhanced MetaFile (EMF) file.
  %
  %  The format of the ReadEMFImage method is:
  %
  %      MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
  %
  %  A description of each parameter follows:
  %
  %    o magick: This string is generally the first few bytes of an image file
  %      or blob.
  %
  %    o length: Specifies the length of the magick string.
  %
  */
  static MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
  {
    if (length < 48)
      return(MagickFalse);
    if (memcmp(magick+40,"\040\105\115\106\000\000\001\000",8) == 0)
      return(MagickTrue);
    return(MagickFalse);
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   I s W M F                                                                 %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  IsWMF() returns MagickTrue if the image format type, identified by the
  %  magick string, is a Windows MetaFile (WMF) file.
  %
  %  The format of the ReadEMFImage method is:
  %
  %      MagickBooleanType IsEMF(const unsigned char *magick,const size_t length)
  %
  %  A description of each parameter follows:
  %
  %    o magick: This string is generally the first few bytes of an image file
  %      or blob.
  %
  %    o length: Specifies the length of the magick string.
  %
  */
  static MagickBooleanType IsWMF(const unsigned char *magick,const size_t length)
  {
    if (length < 4)
      return(MagickFalse);
    if (memcmp(magick,"\327\315\306\232",4) == 0)
      return(MagickTrue);
    if (memcmp(magick,"\001\000\011\000",4) == 0)
      return(MagickTrue);
    return(MagickFalse);
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %  R e a d E M F I m a g e                                                    %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  ReadEMFImage() reads an Microsoft Windows Enhanced MetaFile (EMF) or
  %  Windows MetaFile (WMF) file using the Windows API and returns it.  It
  %  allocates the memory necessary for the new Image structure and returns a
  %  pointer to the new image.
  %
  %  The format of the ReadEMFImage method is:
  %
  %      Image *ReadEMFImage(const ImageInfo *image_info,
  %        ExceptionInfo *exception)
  %
  %  A description of each parameter follows:
  %
  %    o image_info: the image info..
  %
  %    o exception: return any errors or warnings in this structure.
  %
  */
  
  #if defined(MAGICKCORE_HAVE__WFOPEN)
  static size_t UTF8ToUTF16(const unsigned char *utf8,wchar_t *utf16)
  {
    register const unsigned char
      *p;
  
    if (utf16 != (wchar_t *) NULL)
      {
        register wchar_t
          *q;
  
        wchar_t
          c;
  
        /*
          Convert UTF-8 to UTF-16.
        */
        q=utf16;
        for (p=utf8; *p != '\0'; p++)
        {
          if ((*p & 0x80) == 0)
            *q=(*p);
          else
            if ((*p & 0xE0) == 0xC0)
              {
                c=(*p);
                *q=(c & 0x1F) << 6;
                p++;
                if ((*p & 0xC0) != 0x80)
                  return(0);
                *q|=(*p & 0x3F);
              }
            else
              if ((*p & 0xF0) == 0xE0)
                {
                  c=(*p);
                  *q=c << 12;
                  p++;
                  if ((*p & 0xC0) != 0x80)
                    return(0);
                  c=(*p);
                  *q|=(c & 0x3F) << 6;
                  p++;
                  if ((*p & 0xC0) != 0x80)
                    return(0);
                  *q|=(*p & 0x3F);
                }
              else
                return(0);
          q++;
        }
        *q++='\0';
        return(q-utf16);
      }
    /*
      Compute UTF-16 string length.
    */
    for (p=utf8; *p != '\0'; p++)
    {
      if ((*p & 0x80) == 0)
        ;
      else
        if ((*p & 0xE0) == 0xC0)
          {
            p++;
            if ((*p & 0xC0) != 0x80)
              return(0);
          }
        else
          if ((*p & 0xF0) == 0xE0)
            {
              p++;
              if ((*p & 0xC0) != 0x80)
                return(0);
              p++;
              if ((*p & 0xC0) != 0x80)
                return(0);
           }
         else
           return(0);
    }
    return(p-utf8);
  }
  
  static wchar_t *ConvertUTF8ToUTF16(const unsigned char *source)
  {
    size_t
      length;
  
    wchar_t
      *utf16;
  
    length=UTF8ToUTF16(source,(wchar_t *) NULL);
    if (length == 0)
      {
        register long
          i;
  
        /*
          Not UTF-8, just copy.
        */
        length=strlen(source);
        utf16=(wchar_t *) AcquireQuantumMemory(length+1,sizeof(*utf16));
        if (utf16 == (wchar_t *) NULL)
          return((wchar_t *) NULL);
        for (i=0; i <= (long) length; i++)
          utf16[i]=source[i];
        return(utf16);
      }
    utf16=(wchar_t *) AcquireQuantumMemory(length+1,sizeof(*utf16));
    if (utf16 == (wchar_t *) NULL)
      return((wchar_t *) NULL);
    length=UTF8ToUTF16(source,utf16);
    return(utf16);
  }
  #endif
  
  /*
    This method reads either an enhanced metafile, a regular 16bit Windows
    metafile, or an Aldus Placeable metafile and converts it into an enhanced
    metafile.  Width and height are returned in .01mm units.
  */
  #if defined(MAGICKCORE_WINGDI32_DELEGATE)
  static HENHMETAFILE ReadEnhMetaFile(const char *path,long *width,
    long *height)
  {
  #pragma pack( push )
  #pragma pack( 2 )
    typedef struct
    {
      DWORD dwKey;
      WORD hmf;
      SMALL_RECT bbox;
      WORD wInch;
      DWORD dwReserved;
      WORD wCheckSum;
    } APMHEADER, *PAPMHEADER;
  #pragma pack( pop )
  
    DWORD
      dwSize;
  
    ENHMETAHEADER
      emfh;
  
    HANDLE
      hFile;
  
    HDC
      hDC;
  
    HENHMETAFILE
      hTemp;
  
    LPBYTE
      pBits;
  
    METAFILEPICT
      mp;
  
    HMETAFILE
      hOld;
  
    *width=512;
    *height=512;
    hTemp=GetEnhMetaFile(path);
  #if defined(MAGICKCORE_HAVE__WFOPEN)
    if (hTemp == (HENHMETAFILE) NULL)
      {
        wchar_t
          *unicode_path;
  
        unicode_path=ConvertUTF8ToUTF16(path);
        if (unicode_path != (wchar_t *) NULL)
          {
            hTemp=GetEnhMetaFileW(unicode_path);
            unicode_path=(wchar_t *) RelinquishMagickMemory(unicode_path);
          }
      }
  #endif
    if (hTemp != (HENHMETAFILE) NULL)
      {
        /*
          Enhanced metafile.
        */
        GetEnhMetaFileHeader(hTemp,sizeof(ENHMETAHEADER),&emfh);
        *width=emfh.rclFrame.right-emfh.rclFrame.left;
        *height=emfh.rclFrame.bottom-emfh.rclFrame.top;
        return(hTemp);
      }
    hOld=GetMetaFile(path);
    if (hOld != (HMETAFILE) NULL)
      {
        /*
          16bit windows metafile.
        */
        dwSize=GetMetaFileBitsEx(hOld,0,NULL);
        if (dwSize == 0)
          {
            DeleteMetaFile(hOld);
            return((HENHMETAFILE) NULL);
          }
        pBits=(LPBYTE) AcquireQuantumMemory(dwSize,sizeof(*pBits));
        if (pBits == (LPBYTE) NULL)
          {
            DeleteMetaFile(hOld);
            return((HENHMETAFILE) NULL);
          }
        if (GetMetaFileBitsEx(hOld,dwSize,pBits) == 0)
          {
            pBits=(BYTE *) DestroyString((char *) pBits);
            DeleteMetaFile(hOld);
            return((HENHMETAFILE) NULL);
          }
        /*
          Make an enhanced metafile from the windows metafile.
        */
        mp.mm=MM_ANISOTROPIC;
        mp.xExt=1000;
        mp.yExt=1000;
        mp.hMF=NULL;
        hDC=GetDC(NULL);
        hTemp=SetWinMetaFileBits(dwSize,pBits,hDC,&mp);
        ReleaseDC(NULL,hDC);
        DeleteMetaFile(hOld);
        pBits=(BYTE *) DestroyString((char *) pBits);
        GetEnhMetaFileHeader(hTemp,sizeof(ENHMETAHEADER),&emfh);
        *width=emfh.rclFrame.right-emfh.rclFrame.left;
        *height=emfh.rclFrame.bottom-emfh.rclFrame.top;
        return(hTemp);
      }
    /*
      Aldus Placeable metafile.
    */
    hFile=CreateFile(path,GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,
      NULL);
    if (hFile == INVALID_HANDLE_VALUE)
      return(NULL);
    dwSize=GetFileSize(hFile,NULL);
    pBits=(LPBYTE) AcquireQuantumMemory(dwSize,sizeof(*pBits));
    ReadFile(hFile,pBits,dwSize,&dwSize,NULL);
    CloseHandle(hFile);
    if (((PAPMHEADER) pBits)->dwKey != 0x9ac6cdd7l)
      {
        pBits=(BYTE *) DestroyString((char *) pBits);
        return((HENHMETAFILE) NULL);
      }
    /*
      Make an enhanced metafile from the placable metafile.
    */
    mp.mm=MM_ANISOTROPIC;
    mp.xExt=((PAPMHEADER) pBits)->bbox.Right-((PAPMHEADER) pBits)->bbox.Left;
    *width=mp.xExt;
    mp.xExt=(mp.xExt*2540l)/(DWORD) (((PAPMHEADER) pBits)->wInch);
    mp.yExt=((PAPMHEADER)pBits)->bbox.Bottom-((PAPMHEADER) pBits)->bbox.Top;
    *height=mp.yExt;
    mp.yExt=(mp.yExt*2540l)/(DWORD) (((PAPMHEADER) pBits)->wInch);
    mp.hMF=NULL;
    hDC=GetDC(NULL);
    hTemp=SetWinMetaFileBits(dwSize,&(pBits[sizeof(APMHEADER)]),hDC,&mp);
    ReleaseDC(NULL,hDC);
    pBits=(BYTE *) DestroyString((char *) pBits);
    return(hTemp);
  }
  
  #define CENTIMETERS_INCH 2.54
  
  static Image *ReadEMFImage(const ImageInfo *image_info,
    ExceptionInfo *exception)
  {
    BITMAPINFO
      DIBinfo;
  
    HBITMAP
      hBitmap,
      hOldBitmap;
  
    HDC
      hDC;
  
    HENHMETAFILE
      hemf;
  
    Image
      *image;
  
    long
      height,
      width,
      y;
  
    RECT
      rect;
  
    register long
      x;
  
    register PixelPacket
      *q;
  
    RGBQUAD
      *pBits,
      *ppBits;
  
    image=AcquireImage(image_info);
    hemf=ReadEnhMetaFile(image_info->filename,&width,&height);
    if (hemf == (HENHMETAFILE) NULL)
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    if ((image->columns == 0) || (image->rows == 0))
      {
        double
          y_resolution,
          x_resolution;
  
        y_resolution=DefaultResolution;
        x_resolution=DefaultResolution;
        if (image->y_resolution > 0)
          {
            y_resolution=image->y_resolution;
            if (image->units == PixelsPerCentimeterResolution)
              y_resolution*=CENTIMETERS_INCH;
          }
        if (image->x_resolution > 0)
          {
            x_resolution=image->x_resolution;
            if (image->units == PixelsPerCentimeterResolution)
              x_resolution*=CENTIMETERS_INCH;
          }
        image->rows=(unsigned long) ((height/1000.0/CENTIMETERS_INCH)*
          y_resolution+0.5);
        image->columns=(unsigned long) ((width/1000.0/CENTIMETERS_INCH)*
          x_resolution+0.5);
      }
    if (image_info->size != (char *) NULL)
      {
        long
          x;
  
        image->columns=width;
        image->rows=height;
        x=0;
        y=0;
        (void) GetGeometry(image_info->size,&x,&y,&image->columns,&image->rows);
      }
    if (image_info->page != (char *) NULL)
      {
        char
          *geometry;
  
        long
          sans;
  
        register char
          *p;
  
        MagickStatusType
          flags;
  
        geometry=GetPageGeometry(image_info->page);
        p=strchr(geometry,'>');
        if (p == (char *) NULL)
          {
            flags=ParseMetaGeometry(geometry,&sans,&sans,&image->columns,
              &image->rows);
            if (image->x_resolution != 0.0)
              image->columns=(unsigned long) ((image->columns*
                image->x_resolution)+0.5);
            if (image->y_resolution != 0.0)
              image->rows=(unsigned long) ((image->rows*image->y_resolution)+0.5);
          }
        else
          {
            *p='\0';
            flags=ParseMetaGeometry(geometry,&sans,&sans,&image->columns,
              &image->rows);
            if (image->x_resolution != 0.0)
              image->columns=(unsigned long) (((image->columns*
                image->x_resolution)/DefaultResolution)+0.5);
            if (image->y_resolution != 0.0)
              image->rows=(unsigned long) (((image->rows*image->y_resolution)/
                DefaultResolution)+0.5);
          }
        geometry=DestroyString(geometry);
      }
    hDC=GetDC(NULL);
    if (hDC == (HDC) NULL)
      {
        DeleteEnhMetaFile(hemf);
        ThrowReaderException(ResourceLimitError,"UnableToCreateADC");
      }
    /*
      Initialize the bitmap header info.
    */
    (void) ResetMagickMemory(&DIBinfo,0,sizeof(BITMAPINFO));
    DIBinfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
    DIBinfo.bmiHeader.biWidth=image->columns;
    DIBinfo.bmiHeader.biHeight=(-1)*image->rows;
    DIBinfo.bmiHeader.biPlanes=1;
    DIBinfo.bmiHeader.biBitCount=32;
    DIBinfo.bmiHeader.biCompression=BI_RGB;
    hBitmap=CreateDIBSection(hDC,&DIBinfo,DIB_RGB_COLORS,(void **) &ppBits,
      NULL,0);
    ReleaseDC(NULL,hDC);
    if (hBitmap == (HBITMAP) NULL)
      {
        DeleteEnhMetaFile(hemf);
        ThrowReaderException(ResourceLimitError,"UnableToCreateBitmap");
      }
    hDC=CreateCompatibleDC(NULL);
    if (hDC == (HDC) NULL)
      {
        DeleteEnhMetaFile(hemf);
        DeleteObject(hBitmap);
        ThrowReaderException(ResourceLimitError,"UnableToCreateADC");
      }
    hOldBitmap=(HBITMAP) SelectObject(hDC,hBitmap);
    if (hOldBitmap == (HBITMAP) NULL)
      {
        DeleteEnhMetaFile(hemf);
        DeleteDC(hDC);
        DeleteObject(hBitmap);
        ThrowReaderException(ResourceLimitError,"UnableToCreateBitmap");
      }
    /*
      Initialize the bitmap to the image background color.
    */
    pBits=ppBits;
    for (y=0; y < (long) image->rows; y++)
    {
      for (x=0; x < (long) image->columns; x++)
      {
        pBits->rgbRed=ScaleQuantumToChar(image->background_color.red);
        pBits->rgbGreen=ScaleQuantumToChar(image->background_color.green);
        pBits->rgbBlue=ScaleQuantumToChar(image->background_color.blue);
        pBits++;
      }
    }
    rect.top=0;
    rect.left=0;
    rect.right=image->columns;
    rect.bottom=image->rows;
    /*
      Convert metafile pixels.
    */
    PlayEnhMetaFile(hDC,hemf,&rect);
    pBits=ppBits;
    for (y=0; y < (long) image->rows; y++)
    {
      q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
      if (q == (PixelPacket *) NULL)
        break;
      for (x=0; x < (long) image->columns; x++)
      {
        q->red=ScaleCharToQuantum(pBits->rgbRed);
        q->green=ScaleCharToQuantum(pBits->rgbGreen);
        q->blue=ScaleCharToQuantum(pBits->rgbBlue);
        q->opacity=OpaqueOpacity;
        pBits++;
        q++;
      }
      if (SyncAuthenticPixels(image,exception) == MagickFalse)
        break;
    }
    DeleteEnhMetaFile(hemf);
    SelectObject(hDC,hOldBitmap);
    DeleteDC(hDC);
    DeleteObject(hBitmap);
    return(GetFirstImageInList(image));
  }
  #endif /* MAGICKCORE_WINGDI32_DELEGATE */
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   R e g i s t e r E M F I m a g e                                           %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  RegisterEMFImage() adds attributes for the EMF image format to
  %  the list of supported formats.  The attributes include the image format
  %  tag, a method to read and/or write the format, whether the format
  %  supports the saving of more than one frame to the same file or blob,
  %  whether the format supports native in-memory I/O, and a brief
  %  description of the format.
  %
  %  The format of the RegisterEMFImage method is:
  %
  %      unsigned long RegisterEMFImage(void)
  %
  */
  ModuleExport unsigned long RegisterEMFImage(void)
  {
    MagickInfo
      *entry;
  
    entry=SetMagickInfo("EMF");
  #if defined(MAGICKCORE_WINGDI32_DELEGATE)
    entry->decoder=ReadEMFImage;
  #endif
    entry->description=ConstantString(
      "Windows WIN32 API rendered Enhanced Meta File");
    entry->magick=(IsImageFormatHandler *) IsEMF;
    entry->blob_support=MagickFalse;
    entry->module=ConstantString("WMF");
    (void) RegisterMagickInfo(entry);
    entry=SetMagickInfo("WMFWIN32");
  #if defined(MAGICKCORE_WINGDI32_DELEGATE)
    entry->decoder=ReadEMFImage;
  #endif
    entry->description=ConstantString("Windows WIN32 API rendered Meta File");
    entry->magick=(IsImageFormatHandler *) IsWMF;
    entry->blob_support=MagickFalse;
    entry->module=ConstantString("WMFWIN32");
    (void) RegisterMagickInfo(entry);
    return(MagickImageCoderSignature);
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   U n r e g i s t e r E M F I m a g e                                       %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  UnregisterEMFImage() removes format registrations made by the
  %  EMF module from the list of supported formats.
  %
  %  The format of the UnregisterEMFImage method is:
  %
  %      UnregisterEMFImage(void)
  %
  */
  ModuleExport void UnregisterEMFImage(void)
  {
    (void) UnregisterMagickInfo("EMF");
    (void) UnregisterMagickInfo("WMFWIN32");
  }
  