Public Member Functions¶

METAFILEDEVICECONTEXT (FILE *fp_, const RECT *size, LPCWSTR description_w)
virtual ~METAFILEDEVICECONTEXT ()
OBJECTTYPE getType (void) const
DWORD nextHandle (void)
void clearHandle (DWORD handle)
void appendRecord (METARECORD *record)
void appendHandle (METARECORD *record)
void deleteMetafile (void)
void mergePoint (const LONG &x, const LONG &y)
void mergePoint (const POINT &p)

Data Fields¶

::FILE * fp
DATASTREAM ds
ENHMETAHEADER * header
std::vector< EMF::METARECORD * > records
SIZEL resolution
The resolution in DPI of the reference DC. SIZEL viewport_ext
The extent of the viewport. POINT viewport_org
The origin of the viewport. SIZEL window_ext
The extent of the window. POINT window_org
The origin of the window. bool update_frame
Update the frame automatically? POINT min_device_point
The lft/top-most painted point in device units. POINT max_device_point
The rgt/btm-most painted point in device units. POINT point
The current point. PEN * pen
The current pen. BRUSH * brush
The current brush. FONT * font
The current font. PALETTE * palette
The current palette. UINT text_alignment
The current text alignment. COLORREF text_color
The current text foreground color. COLORREF bk_color
The current background color. INT bk_mode
The current background mode. INT polyfill_mode
The current polygon fill mode. INT map_mode
The current mapping mode. FLOAT miter_limit
The current miter length limit. std::vector< bool > handles
std::map< HGDIOBJ, HGDIOBJ > emf_handles

EMF::METAFILEDEVICECONTEXT::METAFILEDEVICECONTEXT (FILE * fp_, const RECT * size, LPCWSTR description_w) [inline]¶

Most graphics programs seem to want to handle the opening and closing of files themselves, so this is an extension to the w32 interface.

Parameters

virtual EMF::METAFILEDEVICECONTEXT::~METAFILEDEVICECONTEXT () [inline], [virtual]¶

Destructor frees all the graphics objects which may have been allocated. Now, it also frees any metarecords which it might hold, too.

References deleteMetafile(), and records.

void EMF::METAFILEDEVICECONTEXT::appendHandle (METARECORD * record) [inline]¶

Add this record to the metafile.

Parameters

References header, records, and EMF::METARECORD::size().

void EMF::METAFILEDEVICECONTEXT::appendRecord (METARECORD * record) [inline]¶

Add this record to the metafile.

Parameters

References header, records, and EMF::METARECORD::size().

void EMF::METAFILEDEVICECONTEXT::clearHandle (DWORD handle) [inline]¶

Clear the usage of this handle

References EMF::OBJECT::handle, and handles.

void EMF::METAFILEDEVICECONTEXT::deleteMetafile (void) [inline]¶

Delete all the records from the metafile. This would seem to include deleting the header record as well.

References records.

Referenced by ~METAFILEDEVICECONTEXT().

OBJECTTYPE EMF::METAFILEDEVICECONTEXT::getType (void) const [inline], [virtual]¶

Return the type of this object (could probably do better with RTTI()).

Implements EMF::OBJECT.

void EMF::METAFILEDEVICECONTEXT::mergePoint (const LONG & x, const LONG & y) [inline]¶

Somewhat superfluous, except checker doesn't understand the initialization of automatic structures in the declaration.

void EMF::METAFILEDEVICECONTEXT::mergePoint (const POINT & p) [inline]¶

Take the given point and determine if it enlarges the 'painted' area of the device.

References header, max_device_point, min_device_point, update_frame, viewport_ext, viewport_org, window_ext, and window_org.

DWORD EMF::METAFILEDEVICECONTEXT::nextHandle (void) [inline]¶

Scan the bit vector of used handles and return the index of the first free bit as this objects metafile handle.

References handles, and header.

DATASTREAM EMF::METAFILEDEVICECONTEXT::ds¶

All i/o to the metafile is wrapped by this class so that byte swapping on big-endian machines is transparent.

std::map< HGDIOBJ, HGDIOBJ > EMF::METAFILEDEVICECONTEXT::emf_handles¶

This map holds the current mapping between EMF handles and global object handles as a metafile is played back (with PlayEnhMetaFile).

Referenced by EMF::EMRSELECTOBJECT::execute(), EMF::EMRDELETEOBJECT::execute(), EMF::EMRCREATEPEN::execute(), EMF::EMREXTCREATEPEN::execute(), EMF::EMRCREATEBRUSHINDIRECT::execute(), and EMF::EMREXTCREATEFONTINDIRECTW::execute().

::FILE* EMF::METAFILEDEVICECONTEXT::fp¶

If it is a file-based metafile, then this pointer is not null.

std::vector< bool > EMF::METAFILEDEVICECONTEXT::handles¶

For compatibility, it appears that metafile handles are reused as objects are deleted. Attempt to emulate that behavior with a bit vector of used metafile handles.

Referenced by clearHandle(), and nextHandle().

ENHMETAHEADER* EMF::METAFILEDEVICECONTEXT::header¶

Serves double duty as the physical device description.

Referenced by appendHandle(), appendRecord(), mergePoint(), and nextHandle().

std::vector< EMF::METARECORD* > EMF::METAFILEDEVICECONTEXT::records¶

All of the metafile records are stored in memory.

Referenced by appendHandle(), appendRecord(), deleteMetafile(), and ~METAFILEDEVICECONTEXT().