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eliotfowler / EFCircularSlider

An extensible circular slider for iOS applications
http://eliotfowler.github.io/EFCircularSlider/
MIT License
998 stars 161 forks source link

Half circle slider. #34

Open ghost opened 9 years ago

ghost commented 9 years ago

Is it possible to draw only a half circle slider?

@fatuhoku @hodgesmr @eliotfowler @kenthumphries @ciotto

douglasjunior commented 9 years ago

I need too.

eliotfowler commented 9 years ago

@RokasAug Please refrain from auto-tagging everyone that has been marked as a contributer. If they are still interested in helping, they will be "watching" the project and will be notified automatically. If not, they all just got an unnecessary notification.

This is possible, but not without customization of the library code. You will basically need to do 2 things:

  1. Restrict the slidable area to 0° to 180°
  2. Modify -(void) drawLine:(CGContextRef)ctx to draw an unfilled arc instead of an unfilled circle as the background.