Seems like there's a possibility someone said "white" because they
assumed that would be the background color of the form.

If so, Color transparent would probably be a better choice.

Oh well, we can address this issue in the future lazily if needed.

On Sun, Jan 12, 2014 at 8:12 AM, Nicolas Cellier
<nicolas.cellier.aka.nice at gmail.com> wrote:
>
> 2014/1/11 Chris Muller <asqueaker at gmail.com>
>>
>> Why blending with Color white?
>
>
> I don't know. It was the old code found in MultiDisplayScanner and just
> happens to work.
> I suppose it has no effect and is equivalent painting, except that it is
> respectful of transparency encoding.
>
>>
>>
>> On Thu, Jan 9, 2014 at 6:54 PM,  <commits at source.squeak.org> wrote:
>> > Nicolas Cellier uploaded a new version of Graphics to project The Trunk:
>> > http://source.squeak.org/trunk/Graphics-nice.287.mcz
>> >
>> > ==================== Summary ====================
>> >
>> > Name: Graphics-nice.287
>> > Author: nice
>> > Time: 10 January 2014, 1:54:29.094 am
>> > UUID: e853e088-f3a2-47b0-b991-98b23543c4e2
>> > Ancestors: Graphics-nice.284
>> >
>> > Fix display of embedded Form in Text.
>> > CombinationRule Form over apparently does not correctly handle
>> > transparency, Form blend does a better job.
>> > The mistake is that DisplayScanner and MultiDisplayScanner did have two
>> > different versions of placeEmbeddedObject:, and I picked the wrong one when
>> > unifying. Since I only tested with embedded Morph and opaque Form, I failed
>> > to see it...
>> > Thanks to Sean DeNigris for report and solution.
>> >
>> > =============== Diff against Graphics-nice.284 ===============
>> >
>> > Item was changed:
>> >   ----- Method: BitBltDisplayScanner>>displayEmbeddedForm: (in category
>> > 'displaying') -----
>> >   displayEmbeddedForm: aForm
>> >         aForm
>> >                 displayOn: bitBlt destForm
>> >                 at: destX @ (lineY + line baseline - aForm height)
>> > +               clippingBox: bitBlt clipRect
>> > +               rule: Form blend
>> > +               fillColor: Color white !
>> > -               clippingBox: bitBlt clipRect!
>> >
>> >
>>
>