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feat: add SliderZeroPositionType and SliderRulerPositionInfoProvider
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // | ||
| // SliderRulerPositionInfoProvider.swift | ||
| // Inchworm | ||
| // | ||
| // Created by Yingtao Guo on 6/14/23. | ||
| // | ||
|
|
||
| import Foundation | ||
|
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| protocol SliderRulerPositionInfoProvider { | ||
| var slideRuler: SlideRuler! { get set } | ||
| func getInitialOffsetRatio() -> CGFloat | ||
| func getCentralDotOriginX() -> CGFloat | ||
| func getRulerOffsetX(with progress: CGFloat) -> CGFloat | ||
| func checkIsCenterPosition(with limit: CGFloat) -> Bool | ||
| func getForceAlignCenterX() -> CGFloat | ||
| func getOffsetRatio() -> CGFloat | ||
| func handleOffsetRatioWhenScrolling(_ scrollView: UIScrollView) | ||
| } | ||
|
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| extension SliderRulerPositionInfoProvider { | ||
| func handleOffsetRatioWhenScrolling(_ scrollView: UIScrollView) {} | ||
| } | ||
|
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| class LeftStyleSliderRulerPositionInfoProvider: SliderRulerPositionInfoProvider { | ||
| var slideRuler: SlideRuler! | ||
|
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| func getInitialOffsetRatio() -> CGFloat { | ||
| return 0 | ||
| } | ||
|
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| func getCentralDotOriginX() -> CGFloat { | ||
| return slideRuler.pointer.frame.origin.x - slideRuler.dotWidth / 2 | ||
| } | ||
|
|
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| func getRulerOffsetX(with progress: CGFloat) -> CGFloat { | ||
| return progress * slideRuler.scrollRulerView.frame.width | ||
| } | ||
|
|
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| func checkIsCenterPosition(with limit: CGFloat) -> Bool { | ||
| return abs(slideRuler.scrollRulerView.contentOffset.x) < limit | ||
| } | ||
|
|
||
| func getForceAlignCenterX() -> CGFloat { | ||
| return 0 | ||
| } | ||
|
|
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| func getOffsetRatio() -> CGFloat { | ||
| let offsetRatio = slideRuler.scrollRulerView.contentOffset.x / slideRuler.scrollRulerView.bounds.width | ||
| return min(1, max(0, offsetRatio)) | ||
| } | ||
| } | ||
|
|
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| class MiddleStyleSliderRulerPositionInfoProvider: SliderRulerPositionInfoProvider { | ||
| var slideRuler: SlideRuler! | ||
|
|
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| func getInitialOffsetRatio() -> CGFloat { | ||
| return 0.5 | ||
| } | ||
|
|
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| func getCentralDotOriginX() -> CGFloat { | ||
| return slideRuler.frame.width - slideRuler.dotWidth / 2 | ||
| } | ||
|
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| func getRulerOffsetX(with progress: CGFloat) -> CGFloat { | ||
| return progress * slideRuler.offsetValue + slideRuler.offsetValue | ||
| } | ||
|
|
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| func checkIsCenterPosition(with limit: CGFloat) -> Bool { | ||
| return abs(slideRuler.scrollRulerView.contentOffset.x - slideRuler.frame.width / 2) < limit | ||
| } | ||
|
|
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| func getForceAlignCenterX() -> CGFloat { | ||
| return slideRuler.frame.width / 2 | ||
| } | ||
|
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| func getOffsetRatio() -> CGFloat { | ||
| guard slideRuler.offsetValue != 0 else { | ||
| return 0 | ||
| } | ||
|
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| var offsetRatio = (slideRuler.scrollRulerView.contentOffset.x - slideRuler.offsetValue) / slideRuler.offsetValue | ||
|
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| if offsetRatio > 1 { offsetRatio = 1.0 } | ||
| if offsetRatio < -1 { offsetRatio = -1.0 } | ||
|
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| return offsetRatio | ||
| } | ||
|
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| func handleOffsetRatioWhenScrolling(_ scrollView: UIScrollView) { | ||
| if scrollView.frame.width > 0 { | ||
| slideRuler.sliderOffsetRatio = scrollView.contentOffset.x / scrollView.frame.width | ||
| } | ||
| } | ||
| } |