294 lines
10 KiB
C
294 lines
10 KiB
C
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//
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// Order Encoder 2nd Level
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//
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#ifndef _H_OE2
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#define _H_OE2
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//
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//
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// TYPEDEFS
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//
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//
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//
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// The party order data structure contains all the data that is used by
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// either the 2nd level encoder or decoder to store info on a party.
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//
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// The encoder contains just 1 instance of this structure, for the local
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// party.
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//
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// The decoder contains 1 instance of the structure per remote party.
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//
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typedef struct _PARTYORDERDATA
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{
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STRUCTURE_STAMP
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//
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// A copy of the last order of each type.
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// These are stored as byte array because we dont have a structure
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// defined that has the header and the particular order defined.
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//
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BYTE LastDstblt[sizeof(COM_ORDER_HEADER)+sizeof(DSTBLT_ORDER)];
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BYTE LastPatblt[sizeof(COM_ORDER_HEADER)+sizeof(PATBLT_ORDER)];
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BYTE LastScrblt[sizeof(COM_ORDER_HEADER)+sizeof(SCRBLT_ORDER)];
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BYTE LastMemblt[sizeof(COM_ORDER_HEADER)+sizeof(MEMBLT_ORDER)];
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BYTE LastMem3blt[sizeof(COM_ORDER_HEADER)+sizeof(MEM3BLT_ORDER)];
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BYTE LastRectangle[sizeof(COM_ORDER_HEADER)+sizeof(RECTANGLE_ORDER)];
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BYTE LastLineTo[sizeof(COM_ORDER_HEADER)+sizeof(LINETO_ORDER)];
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BYTE LastTextOut[sizeof(COM_ORDER_HEADER)+sizeof(TEXTOUT_ORDER)];
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BYTE LastExtTextOut[sizeof(COM_ORDER_HEADER)+sizeof(EXTTEXTOUT_ORDER)];
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BYTE LastOpaqueRect[sizeof(COM_ORDER_HEADER)+sizeof(OPAQUERECT_ORDER)];
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BYTE LastSaveBitmap[sizeof(COM_ORDER_HEADER)+sizeof(SAVEBITMAP_ORDER)];
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BYTE LastDeskScroll[sizeof(COM_ORDER_HEADER)+sizeof(DESKSCROLL_ORDER)];
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BYTE LastMembltR2[sizeof(COM_ORDER_HEADER)+sizeof(MEMBLT_R2_ORDER)];
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BYTE LastMem3bltR2[sizeof(COM_ORDER_HEADER)+sizeof(MEM3BLT_R2_ORDER)];
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BYTE LastPolygon[sizeof(COM_ORDER_HEADER)+sizeof(POLYGON_ORDER)];
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BYTE LastPie[sizeof(COM_ORDER_HEADER)+sizeof(PIE_ORDER)];
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BYTE LastEllipse[sizeof(COM_ORDER_HEADER)+sizeof(ELLIPSE_ORDER)];
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BYTE LastArc[sizeof(COM_ORDER_HEADER)+sizeof(ARC_ORDER)];
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BYTE LastChord[sizeof(COM_ORDER_HEADER)+sizeof(CHORD_ORDER)];
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BYTE LastPolyBezier[sizeof(COM_ORDER_HEADER)+sizeof(POLYBEZIER_ORDER)];
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BYTE LastRoundRect[sizeof(COM_ORDER_HEADER)+sizeof(ROUNDRECT_ORDER)];
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//
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// The type and a pointer to the last order
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//
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BYTE LastOrderType;
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LPCOM_ORDER pLastOrder;
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//
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// Details of the last font that was used
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//
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HFONT LastHFONT;
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UINT LastCodePage;
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UINT LastFontWidth;
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UINT LastFontHeight;
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UINT LastFontWeight;
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UINT LastFontFlags;
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UINT LastFontFaceLen;
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char LastFaceName[FH_FACESIZE];
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//
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// The last bounds that were used.
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//
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TSHR_RECT16 LastBounds;
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//
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// Font metrics, currently unused by the encoder.
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//
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TEXTMETRIC LastFontMetrics;
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//
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// An array of pointers to the last orders of each type.
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//
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void * LastOrder[OE2_NUM_TYPES];
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}
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PARTYORDERDATA, * PPARTYORDERDATA, * * PPPARTYORDERDATA;
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//
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// This structure contains information for a single field in an ORDER
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// structure
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//
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// FieldPos - The byte offset into the order structure to the
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// start of the field.
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//
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// FieldUnencodedLen - The length in bytes of the unencoded field.
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//
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// FieldEncodedLen - The length in bytes of the encoded field. This
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// should always be <= to FieldUnencodedLen.
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//
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// FieldSigned - Does this field contain a signed or unsigned value?
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//
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// FieldType - A description of the type of the field - this
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// is used to determine how to encode / decode the
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// field.
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//
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//
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typedef struct tagOE2ETFIELD
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{
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UINT FieldPos;
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UINT FieldUnencodedLen;
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UINT FieldEncodedLen;
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BOOL FieldSigned;
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UINT FieldType;
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}OE2ETFIELD;
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typedef OE2ETFIELD const FAR * POE2ETFIELD;
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//
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// Array of pointers to the entries in the encoding table
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//
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typedef POE2ETFIELD OE2ETTYPE[OE2_NUM_TYPES];
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//
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// This structure contains information allowing an ORDER structure to be
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// encoded or decoded into a DCEO2ORDER structure.
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// The order table comprises
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//
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// - an array of POE2ETFIELD pointers, indexed by the encoded type
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// index:
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//
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// typedef OE2ETTYPE POE2ETFIELD[OE2_NUM_TYPES]
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//
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// - one array of OE2ETFIELD structures for each of the 7 order
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// types (each order type has a different number of fields).
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// Note that there may not be more than 24 entries for a single
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// ORDER type. The entries for an order type are terminated
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// by an entry with the FieldPos field set to 0. The first
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// FieldPos is non-zero since it is the offset to the second
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// field of the order (type is ignored).
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//
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// pFields - an array of POE2ETFIELD pointers, indexed by the encoded
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// type index. This is used to identify the entry in this
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// table for an ORDER type.
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//
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// NumFields - an array of bytes containing the number of fields in each
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// order structure for each order.
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//
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// DstBltFields - array of OE2ETFIELD structures (one for each field)
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// for the DSTBLT_ORDER
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//
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// PatBltFields - array of OE2ETFIELD structures (one for each field)
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// for the PATBLT_ORDER
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//
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// ScrBltFields - array of OE2ETFIELD structures (one for each field)
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// for the SCRBLT_ORDER
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//
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// MemBltFields - array of OE2ETFIELD structures (one for each field)
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// for the MEMBLT_ORDER
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//
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// Mem3BltFields - array of OE2ETFIELD structures (one for each field)
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// for the MEM3BLT_ORDER
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//
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// TextOutFields - array of OE2ETFIELD structures (one for each field)
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// for the TEXTOUT_ORDER
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//
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// ExtTextOutFields - array of OE2ETFIELD structures (one for each field)
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// for the EXTTEXTOUT_ORDER
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//
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// RectangleFields - array of OE2ETFIELD structures (one for each field)
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// for the RECTANGLE_ORDER
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//
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// LineToFields - array of OE2ETFIELD structures (one for each field)
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// for the LINETO_ORDER
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//
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// OpaqueRectFields - array of OE2ETFIELD structures (one for each field)
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// for the OPQAUERECT_ORDER
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//
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// SaveBitmapFields - array of OE2ETFIELD structures (one for each field)
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// for the SAVEBITMAP_ORDER
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//
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// DeskScrollFields - array of OE2ETFIELD structures (one for each field)
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// for the DESKSCROLL_ORDER
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// etc.
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//
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//
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typedef struct tagOE2ETTABLE
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{
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POE2ETFIELD pFields [OE2_NUM_TYPES];
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BYTE NumFields [OE2_NUM_TYPES];
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OE2ETFIELD DstBltFields [OE2_NUM_DSTBLT_FIELDS];
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OE2ETFIELD PatBltFields [OE2_NUM_PATBLT_FIELDS];
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OE2ETFIELD ScrBltFields [OE2_NUM_SCRBLT_FIELDS];
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OE2ETFIELD MemBltFields [OE2_NUM_MEMBLT_FIELDS];
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OE2ETFIELD Mem3BltFields [OE2_NUM_MEM3BLT_FIELDS];
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OE2ETFIELD TextOutFields [OE2_NUM_TEXTOUT_FIELDS];
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OE2ETFIELD ExtTextOutFields [OE2_NUM_EXTTEXTOUT_FIELDS];
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OE2ETFIELD RectangleFields [OE2_NUM_RECTANGLE_FIELDS];
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OE2ETFIELD LineToFields [OE2_NUM_LINETO_FIELDS];
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OE2ETFIELD OpaqueRectFields [OE2_NUM_OPAQUERECT_FIELDS];
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OE2ETFIELD SaveBitmapFields [OE2_NUM_SAVEBITMAP_FIELDS];
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OE2ETFIELD DeskScrollFields [OE2_NUM_DESKSCROLL_FIELDS];
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OE2ETFIELD MemBltR2Fields [OE2_NUM_MEMBLT_R2_FIELDS];
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OE2ETFIELD Mem3BltR2Fields [OE2_NUM_MEM3BLT_R2_FIELDS];
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OE2ETFIELD PolygonFields [OE2_NUM_POLYGON_FIELDS];
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OE2ETFIELD PieFields [OE2_NUM_PIE_FIELDS];
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OE2ETFIELD EllipseFields [OE2_NUM_ELLIPSE_FIELDS];
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OE2ETFIELD ArcFields [OE2_NUM_ARC_FIELDS];
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OE2ETFIELD ChordFields [OE2_NUM_CHORD_FIELDS];
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OE2ETFIELD PolyBezierFields [OE2_NUM_POLYBEZIER_FIELDS];
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OE2ETFIELD RoundRectFields [OE2_NUM_ROUNDRECT_FIELDS];
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} OE2ETTABLE;
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//
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//
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// MACROS
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//
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//
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//
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// #define used to check that there is enough room left in the buffer
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// for the encoded data which is about to be copied in.
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//
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#define ENOUGH_BUFFER(bend, start, datalen) \
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( ((LPBYTE)(start)+(datalen)) <= (bend) )
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//
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// FUNCTION: OE2GetOrderType
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//
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// DESCRIPTION:
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//
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// This function converts the two byte flag used in an ORDER to record the
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// type of order into an internal single byte value
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//
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// PARAMETERS:
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//
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// pOrder - A pointer to the order
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//
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// RETURNS:
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//
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// The type of the order (internal single byte value - see above)
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//
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//
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BYTE OE2GetOrderType(LPCOM_ORDER pOrder);
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BOOL OE2CanUseDeltaCoords(void * pNewCoords,
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void * pOldCoords,
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UINT fieldLength,
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BOOL signedValue,
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UINT numElements);
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void OE2CopyToDeltaCoords(LPTSHR_INT8* ppDestination,
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void * pNewCoords,
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void * pOldCoords,
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UINT fieldLength,
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BOOL signedValue,
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UINT numElements);
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//
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// FUNCTION: OE2EncodeField
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//
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// DESCRIPTION:
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//
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// Convert a field which is an array of 1 or more elements, from its
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// encoded form to its decoded form.
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//
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// PARAMETERS:
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//
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// pSrc - Array of source values.
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// ppDest - Array of destination values.
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// srcFieldLength - The size of each of the elements in the source array.
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// destFieldLength - The size of each of the elements in the destination
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// array.
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// signedValue - Is the element a signed value ?
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// numElements - The number of elements in the arrays.
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//
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// RETURNS:
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//
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// None.
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//
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//
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void OE2EncodeField(void * pSrc,
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PBYTE* ppDest,
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UINT srcFieldLength,
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UINT destFieldLength,
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BOOL signedValue,
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UINT numElements);
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#endif // _H_OE2
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