The Trunk: Graphics-eem.389.mcz

Eliot Miranda uploaded a new version of Graphics to project The Trunk:
http://source.squeak.org/trunk/Graphics-eem.389.mcz

==================== 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!