Inside Macintosh: QuickDraw GX Environment and Utilities /

Chapter 7 - QuickDraw GX Stream Format

QuickDraw GX Stream Format Summary

Opcode Constants and Data Types

Operation Opcode Byte

enum gxGraphicsOperationOpcode {
   gxNewObjectOpcode = 0x00,  
   gxSetDataOpcode   = 0x40,  
   gxSetDefaultOpcode= 0x80,  
   gxReservedOpcode  = 0xC0,  
   gxNextOpcode      = 0xFF,  
};

Data Type Opcode Byte

enum gxGraphicsNewOpcode {
   gxHeaderTypeOpcode      = 0x00,  
   gxStyleTypeOpcode    = 0x28,
   gxInkTypeOpcode,
   gxTransformTypeOpcode,
   gxColorProfileTypeOpcode,
   gxColorSetTypeOpcode,
   gxTagTypeOpcode,
   gxBitImageOpcode,
   gxFontNameTypeOpcode,
   gxTrailerTypeOpcode,
};

Generic Data Opcode

enum gxGenericDataOpcode {
   gxTypeOpcode,
   gxSizeOpcode
};                      /* constants used by current operand when
                         current operation is gxNextOpcode */
#define gxCompressionShift       6
#define gxObjectTypeMask      0x3F
#define gxBitImageOpcodeMask  0xC0
#define gxBitImageCountMask   0x3F
#define gxBitImageOpcodeShift    6

Modified Shape Data Opcodes

enum gxShapeDataOpcode {
   gxShapeAttributesOpcode,
   gxShapeTagOpcode,
   gxShapeFillOpcode
};

Modified Style Data Opcodes

enum gxStyleDataOpcode {
   gxStyleAttributesOpcode,
   gxStyleTagOpcode,
   gxStyleCurveErrorOpcode,
   gxStylePenOpcode,
   gxStyleJoinOpcode,
   gxStyleDashOpcode,
   gxStyleCapsOpcode,
   gxStylePatternOpcode,
   gxStyleTextAttributesOpcode,
   gxStyleTextSizeOpcode,
   gxStyleFontOpcode,
   gxStyleTextFaceOpcode,
   gxStylePlatformOpcode,
   gxStyleFontVariationsOpcode,
   #ifdef gxLayoutStyleRuns 
   gxStyleRunControlsOpcode,
   gxStyleRunPriorityJustOverrideOpcode,
   gxStyleRunGlyphJustOverridesOpcode,
   gxStyleRunGlyphSubstitutionsOpcode,
   gxStyleRunFeaturesOpcode,
   gxStyleRunKerningAdjustmentsOpcode,
   gxStyleLayoutInfoOpcode,
   gxStyleJustificationOpcode
};

Modified Ink Data Opcodes

enum gxInkDataOpcode {
   gxInkAttributesOpcode,
   gxInkTagOpcode,
   gxInkColorOpcode,
   gxInkTransferModeOpcode
};

Modified Color Set Data Opcodes

enum gxColorSetDataOpcode {
   gxColorSetReservedOpcode,
   gxColorSetTagOpcode
};

Modified Color Profile Data Opcodes

enum gxProfileDataOpcode {
   gxColorProfileAttributesOpcode,
   gxColorProfileTagOpcode
};

Modified Transform Data Opcodes

enum gxTransformDataOpcode {
   gxTransformReservedOpcode,
   gxTransformTagOpcode,
   gxTransformClipOpcode,
   gxTransformMappingOpcode,
   gxTransformPartMaskOpcode,
   gxTransformToleranceOpcode
};

Bit Image Compression Opcodes

enum gxBitImageCompression {
   gxCopyBitImageBytesOpcode  = 0x00,
   gxRepeatBitImageBytesOpcode= 0x40,
   gxLookupBitImageBytesOpcode= 0x80,
   gxRepeatBitImageScanOpcode = 0xC0
};

Two Bit Compression Values

enum gxTwoBitCompressionValues {
   gxNoCompression,     = 0x00
   gxWordCompression,   = 0x40
   gxByteCompression,   = 0x80
   gxOmitCompression =  = 0x??
};

Flatten Header Bytes

struct gxFlattenHeader {
   fixed          version;
   unsigned char  flatFlags;
};

Style Object Omit Byte Constants and Data Types

Dash Style Omit Byte Masks and Shifts

enum gxOmitDashMask1 {
   gxOmitDashAttributesMask   = 0xC0,
   gxOmitDashShapeMask        = 0x30,
   gxOmitDashAdvanceMask      = 0x0C,
   gxOmitDashPhaseMask        = 0x03
};
enum gxOmitDashShift1 {
   gxOmitDashAttributesShift  = 6,
   gxOmitDashShapeShift       = 4,
   gxOmitDashAdvanceShift     = 2,
   gxOmitDashPhaseShift       = 0
};
enum gxOmitDashMask2 {
   gxOmitDashScaleMask        =  0xC0
};
enum gxOmitDashShift2 {
      gxOmitDashScaleShift    = 6
   };

Pattern Style Omit Byte Masks and Shifts

enum gxOmitPatternMask1 {
      gxOmitPatternAttributesMask   = 0xC0,
      gxOmitPatternShapeMask        = 0x30,
      gxOmitPatternUXMask           = 0x0C,
      gxOmitPatternUYMask           = 0x03
   };
enum gxOmitPatternShift1 {
   gxOmitPatternAttributesShift  = 6,
   gxOmitPatternShapeShift       = 4,
   gxOmitPatternUXShift          = 2,
   gxOmitPatternUYShift          = 0
   };
enum gxOmitPatternMask2 {
   gxOmitPatternVXMask = 0xC0,
   gxOmitPatternVYMask = 0x30
};
enum gxOmitPatternShift2 {
   gxOmitPatternVXShift= 6,
   gxOmitPatternVYShift= 4
};

Join Style Omit Byte Masks and Shifts

enum gxOmitJoinMask {
   gxOmitJoinAttributesMask= 0xC0,
   gxOmitJoinShapeMask     = 0x30,
   gxOmitJoinMiterMask     = 0x0C
};
enum gxOmitJoinShift {
   gxOmitJoinAttributesShift  = 6,
   gxOmitJoinShapeShift       = 4,
   gxOmitJoinMiterShift       = 2
};

Cap Style Omit Byte Masks and Shifts

enum gxOmitCapMask {
   gxOmitCapAttributesMask = 0xC0,
   gxOmitCapStartShapeMask = 0x30,
   gxOmitCapEndShapeMask   = 0x0C
};
enum gxOmitCapShift {
   gxOmitCapAttributesShift= 6,
   gxOmitCapStartShapeShift= 4,
   gxOmitCapEndShapeShift  = 2
};

Text Face Style Omit Byte Masks and Shifts

enum gxOmitFaceMask {
   gxOmitFaceLayersMask = 0xC0,
   gxOmitFaceMappingMask= 0x30
};
enum gxOmitFaceShift {
   gxOmitFaceLayersShift = 6,
   gxOmitFaceMappingShift= 4
};

Face Layer Omit Byte Masks and Shifts

enum gxOmitFaceLayerMask1 {
   gxOmitFaceLayerFillMask       = 0xC0,
   gxOmitFaceLayerFlagsMask      = 0x30,
   gxOmitFaceLayerStyleMask      = 0x0C,
   gxOmitFaceLayerTransformMask  = 0x03
};
enum gxOmitFaceLayerShift1 {
   gxOmitFaceLayerFillShift      = 6,
   gxOmitFaceLayerFlagsShift     = 4,
   gxOmitFaceLayerStyleShift     = 2,
   gxOmitFaceLayerTransformShift = 0
};
enum gxOmitFaceLayerMask2 {
   gxOmitFaceLayerBoldXMask   = 0xC0,
   gxOmitFaceLayerBoldYMask   = 0x30
};
enum gxOmitFaceLayerShift2 {
   gxOmitFaceLayerBoldXShift  = 6,
   gxOmitFaceLayerBoldYShift  = 4
};

Ink Object Omit Byte Constants and Data Types

Colors Omit Byte Masks and Shifts

enum gxOmitColorsMask {
   gxOmitColorsSpaceMask      = 0xC0,
   gxOmitColorsProfileMask    = 0x30,
   gxOmitColorsComponentsMask = 0x0F,
   gxOmitColorsIndexMask      = 0x0C,
   gxOmitColorsIndexSetMask   = 0x03
};
enum gxOmitColorsShift {
   gxOmitColorsSpaceShift        = 6,
   gxOmitColorsProfileShift      = 4,
   gxOmitColorsComponentsShift   = 0,
   gxOmitColorsIndexShift        = 2,
   gxOmitColorsIndexSetShift     = 0
};

Transfer Omit Byte Masks and Shifts

enum gxOmitTransferMask1 {
   gxOmitTransferSpaceMask    = 0xC0,
   gxOmitTransferSetMask      = 0x30,
   gxOmitTransferProfileMask  = 0x0C
};
enum gxOmitTransferShift1 {
   gxOmitTransferSpaceShift   = 6,
   gxOmitTransferSetShift     = 4,
   gxOmitTransferProfileShift = 2
};
enum gxOmitTransferMask2 {
   gxOmitTransferSourceMatrixMask= 0xC0,
   gxOmitTransferDeviceMatrixMask= 0x30,
   gxOmitTransferResultMatrixMask= 0x0C,
   gxOmitTransferFlagsMask       = 0x03
};
enum gxOmitTransferShift2 {
   gxOmitTransferSourceMatrixShift  = 6,
   gxOmitTransferDeviceMatrixShift  = 4,
   gxOmitTransferResultMatrixShift  = 2,
   gxOmitTransferFlagsShift         = 0
}; 

Transfer Component Omit Byte Masks and Shifts

enum gxOmitTransferComponentMask1{
   gxOmitTransferComponentModeMask           = 0x80,
   gxOmitTransferComponentFlagsMask          = 0x40,
   gxOmitTransferComponentSourceMinimumMask  = 0x30,
   gxOmitTransferComponentSourceMaximumMask  = 0x0C,
   gxOmitTransferComponentDeviceMinimumMask  = 0x03
} ;
enum gxOmitTransferComponentShift1 {
   gxOmitTransferComponentModeShift          = 7,
   gxOmitTransferComponentFlagsShift         = 6,
   gxOmitTransferComponentSourceMinimumShift = 4,
   gxOmitTransferComponentSourceMaximumShift = 2,
   gxOmitTransferComponentDeviceMinimumShift = 0
};
enum gxOmitTransferComponentMask2 {
   gxOmitTransferComponentDeviceMaximumMask  = 0xC0,
   gxOmitTransferComponentClampMinimumMask   = 0x30,
   gxOmitTransferComponentClampMaximumMask   = 0x0C,
   gxOmitTransferComponentOperandMask        = 0x03
};
enum gxOmitTransferComponentShift2 {
   gxOmitTransferComponentDeviceMaximumShift = 6,
   gxOmitTransferComponentClampMinimumShift  = 4,
   gxOmitTransferComponentClampMaximumShift  = 2,
   gxOmitTransferComponentOperandShift       = 0
};

Shape Object Omit Byte Constants and Data Types

Path Shape Omit Byte Masks and Shifts

enum gxOmitPathMask {
   gxOmitPathPositionXMask = 0xC0,
   gxOmitPathPositionYMask = 0x30,
   gxOmitPathDeltaXMask    = 0x0C,
   gxOmitPathDeltaYMask    = 0x03
};
enum gxOmitPathShift {
   gxOmitPathPositionXShift   = 6,
   gxOmitPathPositionYShift   = 4,
   gxOmitPathDeltaXShift      = 2,
   gxOmitPathDeltaYShift      = 0
};

Bitmap Shape Omit Byte Masks and Shifts

enum gxOmitBitmapMask1 {
   gxOmitBitmapImageMask      = 0xC0,
   gxOmitBitmapWidthMask      = 0x30,
   gxOmitBitmapHeightMask     = 0x0C,
   gxOmitBitmapRowBytesMask   = 0x03
};
enum gxOmitBitmapShift1 {
   gxOmitBitmapImageShift     = 6,
   gxOmitBitmapWidthShift     = 4,
   gxOmitBitmapHeightShift    = 2,
   gxOmitBitmapRowBytesShift  = 0
};
enum gxOmitBitmapMask2 {
   gxOmitBitmapPixelSizeMask  = 0xC0,
   gxOmitBitmapSpaceMask      = 0x30,
   gxOmitBitmapSetMask        = 0x0C,
   gxOmitBitmapProfileMask    = 0x03
};
enum gxOmitBitmapShift2 {
   gxOmitBitmapPixelSizeShift = 6,
   gxOmitBitmapSpaceShift     = 4,
   gxOmitBitmapSetShift       = 2,
   gxOmitBitmapProfileShift   = 0
};
enum gxOmitBitmapMask3 {
   gxOmitBitmapPositionXMask = 0xC0,
   gxOmitBitmapPositionYMask = 0x30
};
enum gxOmitBitmapShift3 {
   gxOmitBitmapPositionXShift = 6,
   gxOmitBitmapPositionYShift = 4
};

Bit Image Omit Byte Masks and Shifts

enum gxOmitBitImageMask {
   gxOmitBitImageRowBytesMask = 0xC0,
   gxOmitBitImageHeightMask   = 0x30,
   gxOmitBitImageDataMask     = 0x08
};
enum gxOmitBitImageShift {
   gxOmitBitImageRowBytesShift   = 6,
   gxOmitBitImageHeightShift     = 4,
   gxOmitBitImageDataShift       = 3
};

Text Shape Omit Byte Masks and Shifts

enum gxOmitTextMask {
   gxOmitTextCharactersMask   = 0xC0,
   gxOmitTextPositionXMask    = 0x30,
   gxOmitTextPositionYMask    = 0x0C,
   gxOmitTextDataMask         = 0x02
};
enum gxOmitTextShift {
   gxOmitTextCharactersShift  = 6,
   gxOmitTextPositionXShift   = 4,
   gxOmitTextPositionYShift   = 2,
   gxOmitTextDataShift        = 1
};

Glyph Shape Omit Byte Masks and Shifts

enum gxOmitGlyphMask1 {
   gxOmitGlyphCharactersMask  = 0xC0,
   gxOmitGlyphLengthMask      = 0x30,
   gxOmitGlyphRunNumberMask   = 0x0C,
   gxOmitGlyphOnePositionMask = 0x02,
   gxOmitGlyphDataMask        = 0x01
};
enum gxOmitGlyphShift1 {
   gxOmitGlyphCharactersShift    = 6,
   gxOmitGlyphLengthShift        = 4,
   gxOmitGlyphRunNumberShift     = 2,
   gxOmitGlyphOnePositionShift   = 1,
   gxOmitGlyphDataShift          = 0
};
enum gxOmitGlyphMask2 {
   gxOmitGlyphPositionsMask   = 0xC0,
   gxOmitGlyphAdvancesMask    = 0x20,
   gxOmitGlyphTangentsMask    = 0x18,
   gxOmitGlyphRunsMask        = 0x04,
   gxOmitGlyphStylesMask      = 0x03
};
enum gxOmitGlyphShift2 {
   gxOmitGlyphPositionsShift  = 6,
   gxOmitGlyphAdvancesShift   = 5,
   gxOmitGlyphTangentsShift   = 3,
   gxOmitGlyphRunsShift       = 2,
   gxOmitGlyphStylesShift     = 0
};

Layout Shape Omit Byte Masks and Shifts

enum gxOmitLayoutMask1 {
   gxOmitLayoutLengthMask     = 0xC0,
   gxOmitLayoutPositionXMask  = 0x30,
   gxOmitLayoutPositionYMask  = 0x0C,
   gxOmitLayoutDataMask       = 0x02
};
enum gxOmitLayoutShift1 {
   gxOmitLayoutLengthShift    = 6,
   gxOmitLayoutPositionXShift = 4,
   gxOmitLayoutPositionYShift = 2,
   gxOmitLayoutDataShift      = 1
};
enum gxOmitLayoutMask2 {
   gxOmitLayoutWidthMask   = 0xC0,
   gxOmitLayoutFlushMask   = 0x30,
   gxOmitLayoutJustMask    = 0x0C,
   gxOmitLayoutOptionsMask = 0x03
};
enum gxOmitLayoutShift2 {
   gxOmitLayoutWidthShift     = 6,
   gxOmitLayoutFlushShift     = 4,
   gxOmitLayoutJustShift      = 2,
   gxOmitLayoutOptionsShift   = 0
};
enum gxOmitLayoutMask3 {
   gxOmitLayoutStyleRunNumberMask= 0xC0,
   gxOmitLayoutLevelRunNumberMask= 0x30,
   gxOmitLayoutHasBaselineMask   = 0x08,
   gxOmitLayoutStyleRunsMask     = 0x04,
   gxOmitLayoutStylesMask        = 0x03
};
enum gxOmitLayoutShift3 {
   gxOmitLayoutStyleRunNumberShift  = 6,
   gxOmitLayoutLevelRunNumberShift  = 4,
   gxOmitLayoutHasBaselineShift     = 3,
   gxOmitLayoutStyleRunsShift       = 2,
   gxOmitLayoutStylesShift          = 0
};
enum gxOmitLayoutMask4 {
   gxOmitLayoutLevelRunsMask     = 0x80,
   gxOmitLayoutLevelsMask        = 0x40
};
enum gxOmitLayoutShift4 {
   gxOmitLayoutLevelRunsShift = 7,
   gxOmitLayoutLevelsShift    = 6
};

Picture Shape Omit Byte Masks and Shifts

enum gxOmitPictureParametersMask {
   gxOmitPictureShapeMask        = 0xC0,
   gxOmitOverrideStyleMask       = 0x30,
   gxOmitOverrideInkMask         = 0x0C,
   gxOmitOverrideTransformMask   = 0x03
};
enum gxOmitPictureParametersShift {
   gxOmitPictureShapeShift       = 0x6,
   gxOmitOverrideStyleShift      = 0x4,
   gxOmitOverrideInkShift        = 0x2,
   gxOmitOverrideTransformShift  = 0x0
};