mihon/app/src/main/java/eu/kanade/tachiyomi/widget/ElevationAppBarLayout.kt

48 lines
1.4 KiB
Kotlin
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package eu.kanade.tachiyomi.widget
import android.animation.ObjectAnimator
import android.animation.StateListAnimator
import android.content.Context
import android.os.Build
import android.support.design.R
import android.support.design.widget.AppBarLayout
import android.util.AttributeSet
class ElevationAppBarLayout @JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null
) : AppBarLayout(context, attrs) {
private var origStateAnimator: StateListAnimator? = null
init {
if (Build.VERSION.SDK_INT >= 21) {
origStateAnimator = stateListAnimator
}
}
fun enableElevation() {
if (Build.VERSION.SDK_INT >= 21) {
stateListAnimator = origStateAnimator
}
}
fun disableElevation() {
if (Build.VERSION.SDK_INT >= 21) {
stateListAnimator = StateListAnimator().apply {
val objAnimator = ObjectAnimator.ofFloat(this, "elevation", 0f)
// Enabled and collapsible, but not collapsed means not elevated
addState(intArrayOf(android.R.attr.enabled, R.attr.state_collapsible, -R.attr.state_collapsed),
objAnimator)
// Default enabled state
addState(intArrayOf(android.R.attr.enabled), objAnimator)
// Disabled state
addState(IntArray(0), objAnimator)
}
}
}
}