[Pkg] The Trunk: Graphics-eem.389.mcz

commits at source.squeak.org commits at source.squeak.org
Wed Dec 20 08:28:33 UTC 2017

Eliot Miranda uploaded a new version of Graphics to project The Trunk:

==================== Summary ====================

Name: Graphics-eem.389
Author: eem
Time: 20 December 2017, 12:28:14.285581 am
UUID: c000254c-e001-4382-872d-726048c0b5c0
Ancestors: Graphics-mt.388

Fix hackBits for DoubleWordArray and DoubleByteArray.

=============== Diff against Graphics-mt.388 ===============

Item was changed:
  ----- Method: Form>>hackBits: (in category 'private') -----
  hackBits: bitThing
  	"This method provides an initialization so that BitBlt may be used, eg, to 
  	copy ByteArrays and other non-pointer objects efficiently.
  	The resulting form looks 4 wide, 8 deep, and bitThing-size-in-words high."
  	width := 4.
  	depth := 8.
  	bitThing class isBits ifFalse: [self error: 'bitThing must be a non-pointer object'].
+ 	height := bitThing basicSize * bitThing bytesPerElement // width.
- 	bitThing class isBytes
- 		ifTrue: [height := bitThing basicSize // 4]
- 		ifFalse: [height := bitThing basicSize].
  	bits := bitThing!

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