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Make smooth animation of different image scale type #33

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Make smooth animation of different image scale type #33

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26 changes: 18 additions & 8 deletions imageviewer/src/main/java/com/stfalcon/imageviewer/viewer/view/TransitionImageAnimator.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -21,9 +21,7 @@ import android.view.ViewGroup
import android.view.animation.DecelerateInterpolator
import android.widget.FrameLayout
import android.widget.ImageView
import androidx.transition.AutoTransition
import androidx.transition.Transition
import androidx.transition.TransitionManager
import androidx.transition.*
import com.stfalcon.imageviewer.common.extensions.*

internal class TransitionImageAnimator(
Expand Down Expand Up @@ -91,6 +89,7 @@ internal class TransitionImageAnimator(

internalImageContainer.makeViewMatchParent()
internalImage.makeViewMatchParent()
internalImage.scaleType = ImageView.ScaleType.FIT_CENTER

internalRoot.applyMargin(
containerPadding[0],
Expand Down Expand Up @@ -126,6 +125,8 @@ internal class TransitionImageAnimator(
}
}

internalImage.scaleType = it.scaleType

resetRootTranslation()
}
}
Expand All @@ -144,9 +145,18 @@ internal class TransitionImageAnimator(
.start()
}

private fun createTransition(onTransitionEnd: (() -> Unit)? = null): Transition =
AutoTransition()
.setDuration(transitionDuration)
.setInterpolator(DecelerateInterpolator())
.addListener(onTransitionEnd = { onTransitionEnd?.invoke() })
private fun createTransition(onTransitionEnd: (() -> Unit)? = null): Transition {
var transition =
TransitionSet ()
.setOrdering(TransitionSet.ORDERING_TOGETHER)
.addTransition(ChangeBounds())
.addTransition(ChangeTransform())
.addTransition(ChangeClipBounds())
.addTransition(ChangeImageTransform())

return transition
.setDuration(transitionDuration)
.setInterpolator(DecelerateInterpolator())
.addListener(onTransitionEnd = { onTransitionEnd?.invoke() })
}
}