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POEasiest/fastest way to apply a blend mode between two UIViews
primarykey
Id
1371422
data
AcceptedAnswerId
1376506
AnswerCount
1
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2009-09-03T04:20:17.273
FavoriteCount
4
LastActivityDate
2009-09-03T23:33:29.473
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LastEditorUserId
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OwnerUserId
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PostTypeId
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Score
9
ViewCount
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LastEditorDisplayName
text
Body
I am trying to quickly invert the colors of an existing UIView (turn into a negative, as in a photographic negative). Or to take the colors and turn down the saturation. I think easier than manipulating the bitmap is to take another UIView that is all white(or shades), and to use blendmodes to achieve my goals. I don't see a way to direct how a UIView is drawn on top of another. Even if I subclass UIView, I don't see an easy way to drawrect using a blend more. It looks like I will have to subclass UIImageView which has a drawrect:withBlendMode. Has anyone done this in an easier way? I was hoping I could just set a blendmode property on a UIView or UIImageView and not have to subclass... Basically, how would you quickly invert a view so that black is white and white is black?
Tags
<iphone><uiview><uiimageview>
Title
Easiest/fastest way to apply a blend mode between two UIViews
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1. PO
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1. PTQuestion
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1. This table or related slice is empty.
UserOwnerUserId
1. USmahboudz
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1. This table or related slice is empty.
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1. PO
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1. COHi @mahboudz, did you find a better way to do it? or you are still using this way? Thanks!
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 POEasiest/fastest way to apply a blend mode between two UIViews
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