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443 lines
22 KiB
443 lines
22 KiB
/*****************************************************************************
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*
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* parser.cxx - Parser for the Win32 to Win16 metafile converter.
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*
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* Date: 8/13/91
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* Author: Jeffrey Newman (c-jeffn)
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*
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* Copyright 1991 Microsoft Corp
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*****************************************************************************/
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#include "precomp.h"
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#pragma hdrstop
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#define EMR_LAST_MF3216_SUPPORTED 97
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BOOL bGetNextRecord(PLOCALDC pLocalDC, PENHMETARECORD *pemr) ;
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// Call table for the translation entry points.
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PDOFN pdofnDrawingOrders[] = {
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(PDOFN) NULL,
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bHandleHeader, // EMR_HEADER 1
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bHandlePolyBezier, // EMR_POLYBEZIER 2
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bHandlePolygon, // EMR_POLYGON 3
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bHandlePolyline, // EMR_POLYLINE 4
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bHandlePolyBezierTo, // EMR_POLYBEZIERTO 5
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bHandlePolylineTo, // EMR_POLYLINETO 6
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bHandlePolyPolyline, // EMR_POLYPOLYLINE 7
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bHandlePolyPolygon, // EMR_POLYPOLYGON 8
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bHandleSetWindowExt, // EMR_SETWINDOWEXTEX 9
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bHandleSetWindowOrg, // EMR_SETWINDOWORGEX 10
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bHandleSetViewportExt, // EMR_SETVIEWPORTEXTEX 11
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bHandleSetViewportOrg, // EMR_SETVIEWPORTORGEX 12
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bHandleNotImplemented, // EMR_SETBRUSHORGEX 13
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bHandleEOF, // EMR_EOF 14
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bHandleSetPixel, // EMR_SETPIXELV 15
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bHandleSetMapperFlags, // EMR_SETMAPPERFLAGS 16
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bHandleSetMapMode, // EMR_SETMAPMODE 17
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bHandleSetBkMode, // EMR_SETBKMODE 18
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bHandleSetPolyFillMode, // EMR_SETPOLYFILLMODE 19
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bHandleSetRop2, // EMR_SETROP2 20
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bHandleSetStretchBltMode, // EMR_SETSTRETCHBLTMODE 21
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bHandleSetTextAlign, // EMR_SETTEXTALIGN 22
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bHandleNotImplemented, // EMR_SETCOLORADJUSTMENT 23
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bHandleSetTextColor, // EMR_SETTEXTCOLOR 24
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bHandleSetBkColor, // EMR_SETBKCOLOR 25
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bHandleOffsetClipRgn, // EMR_OFFSETCLIPRGN 26
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bHandleMoveTo, // EMR_MOVETOEX 27
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bHandleSetMetaRgn, // EMR_SETMETARGN 28
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bHandleExcludeClipRect, // EMR_EXCLUDECLIPRECT 29
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bHandleIntersectClipRect, // EMR_INTERSECTCLIPRECT 30
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bHandleScaleViewportExt, // EMR_SCALEVIEWPORTEXTEX 31
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bHandleScaleWindowExt, // EMR_SCALEWINDOWEXTEX 32
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bHandleSaveDC, // EMR_SAVEDC 33
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bHandleRestoreDC, // EMR_RESTOREDC 34
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bHandleSetWorldTransform, // EMR_SETWORLDTRANSFORM 35
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bHandleModifyWorldTransform, // EMR_MODIFYWORLDTRANSFORM 36
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bHandleSelectObject, // EMR_SELECTOBJECT 37
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bHandleCreatePen, // EMR_CREATEPEN 38
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bHandleCreateBrushIndirect, // EMR_CREATEBRUSHINDIRECT 39
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bHandleDeleteObject, // EMR_DELETEOBJECT 40
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bHandleAngleArc, // EMR_ANGLEARC 41
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bHandleEllipse, // EMR_ELLIPSE 42
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bHandleRectangle, // EMR_RECTANGLE 43
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bHandleRoundRect, // EMR_ROUNDRECT 44
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bHandleArc, // EMR_ARC 45
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bHandleChord, // EMR_CHORD 46
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bHandlePie, // EMR_PIE 47
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bHandleSelectPalette, // EMR_SELECTPALETTE 48
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bHandleCreatePalette, // EMR_CREATEPALETTE 49
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bHandleSetPaletteEntries, // EMR_SETPALETTEENTRIES 50
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bHandleResizePalette, // EMR_RESIZEPALETTE 51
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bHandleRealizePalette, // EMR_REALIZEPALETTE 52
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bHandleExtFloodFill, // EMR_EXTFLOODFILL 53
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bHandleLineTo, // EMR_LINETO 54
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bHandleArcTo, // EMR_ARCTO 55
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bHandlePolyDraw, // EMR_POLYDRAW 56
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bHandleSetArcDirection, // EMR_SETARCDIRECTION 57
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bHandleNotImplemented, // EMR_SETMITERLIMIT 58
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bHandleBeginPath, // EMR_BEGINPATH 59
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bHandleEndPath, // EMR_ENDPATH 60
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bHandleCloseFigure, // EMR_CLOSEFIGURE 61
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bHandleFillPath, // EMR_FILLPATH 62
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bHandleStrokeAndFillPath, // EMR_STROKEANDFILLPATH 63
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bHandleStrokePath, // EMR_STROKEPATH 64
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bHandleFlattenPath, // EMR_FLATTENPATH 65
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bHandleWidenPath, // EMR_WIDENPATH 66
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bHandleSelectClipPath, // EMR_SELECTCLIPPATH 67
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bHandleAbortPath, // EMR_ABORTPATH 68
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bHandleNotImplemented, // 69
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bHandleGdiComment, // EMR_GDICOMMENT 70
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bHandleFillRgn, // EMR_FILLRGN 71
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bHandleFrameRgn, // EMR_FRAMERGN 72
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bHandleInvertRgn, // EMR_INVERTRGN 73
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bHandlePaintRgn, // EMR_PAINTRGN 74
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bHandleExtSelectClipRgn, // EMR_EXTSELECTCLIPRGN 75
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bHandleBitBlt, // EMR_BITBLT 76
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bHandleStretchBlt, // EMR_STRETCHBLT 77
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bHandleMaskBlt, // EMR_MASKBLT 78
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bHandlePlgBlt, // EMR_PLGBLT 79
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bHandleSetDIBitsToDevice, // EMR_SETDIBITSTODEVICE 80
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bHandleStretchDIBits, // EMR_STRETCHDIBITS 81
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bHandleExtCreateFont, // EMR_EXTCREATEFONTINDIRECTW 82
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bHandleExtTextOut, // EMR_EXTTEXTOUTA 83
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bHandleExtTextOut, // EMR_EXTTEXTOUTW 84
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bHandlePoly16, // EMR_POLYBEZIER16 85
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bHandlePoly16, // EMR_POLYGON16 86
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bHandlePoly16, // EMR_POLYLINE16 87
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bHandlePoly16, // EMR_POLYBEZIERTO16 88
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bHandlePoly16, // EMR_POLYLINETO16 89
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bHandlePolyPoly16, // EMR_POLYPOLYLINE16 90
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bHandlePolyPoly16, // EMR_POLYPOLYGON16 91
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bHandlePoly16, // EMR_POLYDRAW16 92
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bHandleCreateMonoBrush, // EMR_CREATEMONOBRUSH 93
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bHandleCreateDIBPatternBrush, // EMR_CREATEDIBPATTERNBRUSHPT 94
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bHandleExtCreatePen, // EMR_EXTCREATEPEN 95
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bHandlePolyTextOut, // EMR_POLYTEXTOUTA 96
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bHandlePolyTextOut, // EMR_POLYTEXTOUTW 97
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bHandleNotImplemented, // EMR_SETICMMODE 98
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bHandleNotImplemented, // EMR_CREATECOLORSPACE 99
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bHandleNotImplemented, // EMR_SETCOLORSPACE 100
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bHandleNotImplemented, // EMR_DELETECOLORSPACE 101
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bHandleNotImplemented, // EMR_GLSRECORD 102
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bHandleNotImplemented, // EMR_GLSBOUNDEDRECORD 103
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bHandleNotImplemented, // EMR_PIXELFORMAT 104
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bHandleNotImplemented, // 105
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bHandleNotImplemented, // 106
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bHandleNotImplemented, // 107
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bHandleNotImplemented, // 108
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bHandleNotImplemented, // 109
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bHandleNotImplemented, // 110
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bHandleNotImplemented, // EMR_COLORCORRECTPALETTE 111
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bHandleNotImplemented, // EMR_ALPHABLEND 112
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bHandleNotImplemented, // EMR_ALPHADIBBLEND 113
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bHandleNotImplemented, // EMR_TRANSPARENTIMAGE 114
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bHandleNotImplemented, // EMR_TRANSPARENTDIBIMAGE 115
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bHandleNotImplemented // EMR_GRADIENTFILL 116
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} ;
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#if DBG
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PSZ pszMfRecords[] = {
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"NULL RECORD ",
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"EMR_HEADER ",
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"EMR_POLYBEZIER ",
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"EMR_POLYGON ",
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"EMR_POLYLINE ",
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"EMR_POLYBEZIERTO ",
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"EMR_POLYLINETO ",
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"EMR_POLYPOLYLINE ",
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"EMR_POLYPOLYGON ",
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"EMR_SETWINDOWEXTEX ",
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"EMR_SETWINDOWORGEX ",
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"EMR_SETVIEWPORTEXTEX ",
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"EMR_SETVIEWPORTORGEX ",
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"EMR_SETBRUSHORGEX ",
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"EMR_EOF ",
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"EMR_SETPIXELV ",
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"EMR_SETMAPPERFLAGS ",
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"EMR_SETMAPMODE ",
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"EMR_SETBKMODE ",
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"EMR_SETPOLYFILLMODE ",
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"EMR_SETROP2 ",
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"EMR_SETSTRETCHBLTMODE ",
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"EMR_SETTEXTALIGN ",
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"EMR_SETCOLORADJUSTMENT ",
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"EMR_SETTEXTCOLOR ",
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"EMR_SETBKCOLOR ",
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"EMR_OFFSETCLIPRGN ",
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"EMR_MOVETOEX ",
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"EMR_SETMETARGN ",
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"EMR_EXCLUDECLIPRECT ",
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"EMR_INTERSECTCLIPRECT ",
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"EMR_SCALEVIEWPORTEXTEX ",
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"EMR_SCALEWINDOWEXTEX ",
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"EMR_SAVEDC ",
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"EMR_RESTOREDC ",
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"EMR_SETWORLDTRANSFORM ",
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"EMR_MODIFYWORLDTRANSFORM ",
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"EMR_SELECTOBJECT ",
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"EMR_CREATEPEN ",
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"EMR_CREATEBRUSHINDIRECT ",
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"EMR_DELETEOBJECT ",
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"EMR_ANGLEARC ",
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"EMR_ELLIPSE ",
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"EMR_RECTANGLE ",
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"EMR_ROUNDRECT ",
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"EMR_ARC ",
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"EMR_CHORD ",
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"EMR_PIE ",
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"EMR_SELECTPALETTE ",
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"EMR_CREATEPALETTE ",
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"EMR_SETPALETTEENTRIES ",
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"EMR_RESIZEPALETTE ",
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"EMR_REALIZEPALETTE ",
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"EMR_EXTFLOODFILL ",
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"EMR_LINETO ",
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"EMR_ARCTO ",
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"EMR_POLYDRAW ",
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"EMR_SETARCDIRECTION ",
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"EMR_SETMITERLIMIT ",
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"EMR_BEGINPATH ",
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"EMR_ENDPATH ",
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"EMR_CLOSEFIGURE ",
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"EMR_FILLPATH ",
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"EMR_STROKEANDFILLPATH ",
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"EMR_STROKEPATH ",
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"EMR_FLATTENPATH ",
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"EMR_WIDENPATH ",
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"EMR_SELECTCLIPPATH ",
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"EMR_ABORTPATH ",
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"unknown record ",
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"EMR_GDICOMMENT ",
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"EMR_FILLRGN ",
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"EMR_FRAMERGN ",
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"EMR_INVERTRGN ",
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"EMR_PAINTRGN ",
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"EMR_EXTSELECTCLIPRGN ",
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"EMR_BITBLT ",
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"EMR_STRETCHBLT ",
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"EMR_MASKBLT ",
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"EMR_PLGBLT ",
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"EMR_SETDIBITSTODEVICE ",
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"EMR_STRETCHDIBITS ",
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"EMR_EXTCREATEFONTINDIRECTW",
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"EMR_EXTTEXTOUTA ",
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"EMR_EXTTEXTOUTW ",
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"EMR_POLYBEZIER16 ",
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"EMR_POLYGON16 ",
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"EMR_POLYLINE16 ",
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"EMR_POLYBEZIERTO16 ",
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"EMR_POLYLINETO16 ",
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"EMR_POLYPOLYLINE16 ",
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"EMR_POLYPOLYGON16 ",
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"EMR_POLYDRAW16 ",
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"EMR_CREATEMONOBRUSH ",
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"EMR_CREATEDIBPATTERNBRUSHP",
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"EMR_EXTCREATEPEN ",
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"EMR_POLYTEXTOUTA ",
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"EMR_POLYTEXTOUTW ",
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"EMR_SETICMMODE ",
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"EMR_CREATECOLORSPACE ",
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"EMR_SETCOLORSPACE ",
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"EMR_DELETECOLORSPACE ",
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"EMR_GLSRECORD ",
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"EMR_GLSBOUNDEDRECORD ",
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"EMR_PIXELFORMAT ",
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"105 ",
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"106 ",
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"107 ",
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"108 ",
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"109 ",
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"110 ",
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"EMR_COLORCORRECTPALETTE ",
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"EMR_ALPHABLEND ",
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"EMR_ALPHADIBBLEND ",
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"EMR_TRANSPARENTIMAGE ",
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"EMR_TRANSPARENTDIBIMAGE ",
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"EMR_GRADIENTFILL "
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};
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#endif
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/*****************************************************************************
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* Parse the Win32 metafile.
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*
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* The Win32 metafile is represented by the metafile bits pointed to
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* by pMetafileBits. The metafile bits may be obtained from a memory mapped
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* file, or from some shared memory (from the clipboard).
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*****************************************************************************/
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BOOL bParseWin32Metafile(PBYTE pMetafileBits, PLOCALDC pLocalDC)
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{
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INT iType ;
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PVOID pVoid ;
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PENHMETARECORD pemr ;
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PENHMETAHEADER pMf32Header ;
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DWORD nFileSize ;
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BOOL bRet ;
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INT iRecordCount,
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iLastError ;
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bRet = TRUE ;
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// Get the file length from the header.
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// Test to make sure the first record is a Win32 Metafile header.
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pMf32Header = (PENHMETAHEADER) pMetafileBits ;
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if ( (pMf32Header->iType != EMR_HEADER)
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|| (pMf32Header->dSignature != ENHMETA_SIGNATURE)
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)
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{
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RIP("MF3216: bParseWin32Metafile, First Record not a Win32 Metafile Header\n") ;
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return(FALSE) ;
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}
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if (!IsValidEnhMetaRecord(pLocalDC->pht, pMf32Header))
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{
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EMFVALFAIL(("MF3216: bParseWin32Metafile, IsValidEnhMetaRecord failed\n"));
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return(FALSE);
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}
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// Record a pointer to the beginning of the Win32 metafile and
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// it's length incase we need to emit the Win32 metafile as a comment
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// record(s).
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pLocalDC->pMf32Bits = (PBYTE) pMf32Header ;
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pLocalDC->cMf32Bits = pMf32Header->nBytes ;
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// Get the file size for the parser.
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nFileSize = pMf32Header->nBytes ;
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// Initialize pbCurrent, & pbEnd pointers into the
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// metafile bits.
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pLocalDC->pbCurrent = pMetafileBits ;
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pLocalDC->pbEnd = pLocalDC->pbCurrent + nFileSize ;
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if (pLocalDC->pbEnd < pLocalDC->pbCurrent)
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{
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RIP("MF3216: bParseWin32Metafile, pointer arithmetic overflow\n");
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return(FALSE);
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}
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// Init the record count.
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iRecordCount = 0 ;
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// Go through the metafile bits. Handle each record based on
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// it's type. bGetNextRecord returns TRUE if pemr contains
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// a pointer to a record.
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while (bGetNextRecord(pLocalDC, &pemr))
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{
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if (!IsValidEnhMetaRecord(pLocalDC->pht, pemr))
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{
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EMFVALFAIL(("MF3216: bParseWin32Metafile, IsValidEnhMetaRecord failed\n"));
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bRet = FALSE;
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break;
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}
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iRecordCount++ ;
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// Set up a convienent point to the record.
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pVoid = (PVOID) pemr ;
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// Handle the record based on it's type.
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iType = (INT) pemr->iType ;
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// Check if the record type falls within the range of the
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// call table. Eventually, all the record handlers should
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// be in the call table.
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if (iType <= EMR_LAST_MF3216_SUPPORTED)
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{
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bRet = pdofnDrawingOrders[iType](pVoid, pLocalDC) ;
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#if DBG
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if (bRet == FALSE)
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{
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iLastError = GetLastError() ;
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PUTS1("MF3216: Error on Win32 Metafile record #: %d\n", iRecordCount) ;
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PUTS1("\tRecord type: %s\n", pszMfRecords[iType]) ;
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PUTS1("\tLast Error Code: %08.8X\n", iLastError) ;
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}
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#endif
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#if 0
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if (bRet == FALSE)
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break ;
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#else
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// In ancient times (i.e., before NT4.0), someone explicitly
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// removed the code above which exits the loop if the handler
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// fails. Possibly this was a compatibility fix in which
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// the app depended on the metafile conversion to continue
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// even in the event of a failure.
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//
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// Unfortunately, this fix also allows the parser to continue
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// even if the output buffer has run out of space. To
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// minimize the change, we will explicitly look for this case
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// and break out of the loop if it happens. (Refer to bEmit()
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// in emit.c to see where ERROR_BUFFER_OVERFLOW is set).
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if (pLocalDC->flags & ERR_BUFFER_OVERFLOW)
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break ;
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#endif
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}
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else
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{
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PUTS1("MF3216: bParseWin32Metafile - record not supported: %d\n", iType) ;
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}
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}
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#if 0
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// Display some statictics
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if (bRet == TRUE)
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{
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PUTS1("MF3216: %d Win32 Metafile records processed\n",
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iRecordCount) ;
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}
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#endif
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return(bRet) ;
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}
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/*****************************************************************************
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* Get next record
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*
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* This is a support routine for bParseWin32Metafile.
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* It is assumed that pbCurrent, & pbEnd are initialized
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* the first time this routine is called.
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*
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* It returns TRUE if a valid pointer to record is returned in
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* pemr. If there are not more records FALSE is returned.
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*****************************************************************************/
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BOOL bGetNextRecord(PLOCALDC pLocalDC, PENHMETARECORD *ppemr)
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{
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DWORD nSize ;
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// Check for the end of buffer.
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// If this is the end return FALSE and set *ppemr to 0.
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if (pLocalDC->pbCurrent == pLocalDC->pbEnd)
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{
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*ppemr = (PENHMETARECORD) NULL ;
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return (FALSE) ;
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}
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// Well it's not the end of the buffer.
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// So, return a pointer to this record, update pbCurrent, and
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// return TRUE ;
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*ppemr = (PENHMETARECORD) pLocalDC->pbCurrent ;
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nSize = ((PENHMETARECORD) pLocalDC->pbCurrent)->nSize ;
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pLocalDC->pbCurrent += nSize ;
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return(TRUE) ;
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}
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