156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
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/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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faxdrv.h
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Abstract:
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Fax driver graphics DLL header file
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[Environment:]
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Fax driver, kernel mode
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Revision History:
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01/09/96 -davidx-
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Created it.
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dd-mm-yy -author-
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description
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--*/
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#ifndef _FAXDRV_H_
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#define _FAXDRV_H_
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#include "faxlib.h"
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//
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// Data structure maintained by the fax driver graphics DLL
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//
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typedef struct {
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PVOID startDevData; // data structure signature
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HANDLE hPrinter; // handle to printer
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HDEV hdev; // handle to GDI device
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HANDLE hpal; // handle to default palette
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DWORD flags; // flag bits
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DRVDEVMODE dm; // devmode information
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INT pageCount; // number of pages printed
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SIZEL paperSize; // paper size measured in pixels
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SIZEL imageSize; // image size measured in pixels
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RECTL imageArea; // imageable area measured in pixels
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LONG xres, yres; // x- and y-resolution
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HSURF hbitmap; // handle to bitmap surface
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LONG lineOffset; // bitmap scanline byte offset
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DWORD jobId; // job ID
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DWORD fileOffset; // output byte count for current document
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PBYTE pCompBits; // buffer to hold G4 compressed bitmap data
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PBYTE pCompBufPtr; // pointer to next free byte in the buffer
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PBYTE pCompBufMark; // high-water mark
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DWORD compBufSize; // size of compressed bitmap data buffer
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DWORD compBufInc; // increment to enlarge the buffer when necessary
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PBYTE prefline; // raster data for the reference line
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INT bitcnt; // these two fields are used for assembling variable-length
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DWORD bitdata; // compressed bits into byte stream
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PVOID pFaxIFD; // IFD entries for each page
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PVOID endDevData; // data structure signature
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} DEVDATA, *PDEVDATA;
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//
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// Constants for DEVDATA.flags field
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//
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#define PDEV_CANCELLED 0x0001 // current job has been cancelled
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#define PDEV_RESETPDEV 0x0002 // DrvResetPDEV has been called
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#define PDEV_WITHINPAGE 0x0004 // drawing on a page
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//
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// Check if a DEVDATA structure is valid
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//
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#define ValidDevData(pdev) \
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((pdev) && (pdev)->startDevData == (pdev) && (pdev)->endDevData == (pdev))
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//
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// Color values and indices
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//
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#define RGB_BLACK RGB(0, 0, 0)
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#define RGB_WHITE RGB(255, 255, 255)
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#define BLACK_INDEX 0
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#define WHITE_INDEX 1
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//
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// Number of bits consisting a BYTE and a DWORD
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//
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#define BYTEBITS 8
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#define DWORDBITS (sizeof(DWORD) * BYTEBITS)
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//
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// Pad bit scanline data to N-byte boundary
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//
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#define PadBitsToBytes(bits, N) \
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((((bits) + ((N) * BYTEBITS - 1)) / ((N) * BYTEBITS)) * (N))
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//
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// Macros for manipulating ROP4s and ROP3s
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//
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#define GetForegroundRop3(rop4) ((rop4) & 0xFF)
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#define GetBackgroundRop3(rop4) (((rop4) >> 8) & 0xFF)
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#define Rop3NeedPattern(rop3) (((rop3 >> 4) & 0x0F) != (rop3 & 0x0F))
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#define Rop3NeedSource(rop3) (((rop3 >> 2) & 0x33) != (rop3 & 0x33))
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#define Rop3NeedDest(rop3) (((rop3 >> 1) & 0x55) != (rop3 & 0x55))
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//
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// Determine whether the page is in landscape mode
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//
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#define IsLandscapeMode(pdev) ((pdev)->dm.dmPublic.dmOrientation == DMORIENT_LANDSCAPE)
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//
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// Returns the length of the hypotenouse of a right triangle
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//
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LONG
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CalcHypot(
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LONG x,
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LONG y
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);
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//
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// Output a completed page bitmap to the spooler
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//
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BOOL
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OutputPageBitmap(
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PDEVDATA pdev,
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PBYTE pBitmapData
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);
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//
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// Output document trailer information to the spooler
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//
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BOOL
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OutputDocTrailer(
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PDEVDATA pdev
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);
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#endif // !_FAXDRV_H_
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