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TECHNOTE: Inside Macintosh: QuickDraw GX Environment and Utilities Errata

Technote 1022 FEBRUARY 1996

Ingrid Kelly

Apple Developer Technical Support (DTS)

This Technical Note discusses known errors and omissions in Inside Macintosh: QuickDraw GX Environment and Utilities.

Topics:

Correction to Table 7-3 January 1996
Correction to Section "Data Type Opcodes to Modify a Shape Object" January 1996
Correction to Table 7-4 January 1996
Correction to Table 7-5 January 1996
Correction to Listing 7-1 January 1996
Correction to Section "Header Data" January 1996
Correction to Table 7-14 January 1996
Correction to Table 7-15 January 1996

Contents

Chapter 7 - QuickDraw GX Stream Format

Chapter 7 - QuickDraw GX Stream Format

Correction to Table 7-3 Page 7-16, Data Type Opcodes for a new object

Constant	Current Value	Corrected Value
gxGlyphType		0x10		0x0A
gxLayoutType		0x11		0x0B
gxFullType		0x12		0x0C
gxPictureType		0x13		0x0D

Correction to Section 'Data Type Opcodes to Modify a Shape Object' Page 7-17

The sentence that reads "Data type opcode constants for attributes, tag, ink, and fill are defined in the gxShapeDataOpcode enumeration." is incorrect; ink is not part of the enumeration.

Correction to Table 7-4 Page 7-17, Data Type opcodes to modify a style object

Current Constant		Corrected Constant
gxTagOpcode				gxShapeTagOpcode
gxFillOpcode				gxShapeFillOpcode

Correction to Table 7-5 Page 7-19, Data Type opcodes to modify a style object

Constant			Current Value	Corrected Value
gxStyleRunPriorityJustOverrideOpcode		0x1F		0x0F

Correction to Listing 7-1 Page 7-27, Determining if position (x) is byte compressed

if ((a & (gxOmitTextPositionXMask >> gxOmitTextPositionXShift)) == 
	gxByteCompression

should be:

if ((a & (gxOmitTextPositionXMask >> gxOmitTextPositionXShift)) == 
	gxByteCompression)

Correction to Section 'Header Data' Page 7-27

The sentence that reads "The header marks the beginning of a new flattened shape in the data stream" should read:

"The header marks the beginning of the first flattened shape in the data stream."

Correction to Table 7-14 Page 7-62, Analysis of the data stream of a flattened line shape

Values in data stream	Type of Info.	Current Value	Corrected Value
0x2F (00 101111)		Compression 		2		0
		 		type opcode
...
0x28 (00 101000)		Compression  		2		0
		 		type opcode

Correction to Table 7-14 Page 7-63, Analysis of the data stream of a flattened line shape

Values in data stream		Type of Info.	Should be
0x83 (00 000011)			Compression	Byte Compression 
					type opcode

Correction to Table 7-15 Page 7-66, Analysis of the data stream of a flattened rectangle shape

Values in data stream	Type of Info.	Current Value	Corrected Value
0x09 (00 001001)		Record Size		5		9
...
0x00 4B				Data			125.0		75.0

Correction to Section 'Analyzing a Flattened Curve Shape' Page 7-67

The sentence that reads "The size and shape of the curve are defined by its first point (210.0), control point (460.0, 75.0), and last point (310.0, 125.0)." should read:
"The size and shape of the curve are defined by its first point (210.0, 25.0), control point (460.0, 75.0), and last point (310.0, 125.0)."

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