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ui: make multitoolbar transition m3

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This commit is contained in:
Alexander Capehart 2024-07-20 13:32:06 -06:00
parent d909f2d98e
commit 2f21b12beb
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GPG key ID: 37DBE3621FE9AD47
1 changed files with 25 additions and 20 deletions
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45
app/src/main/java/org/oxycblt/auxio/ui/MultiToolbar.kt
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@ -27,8 +27,11 @@ import androidx.annotation.IdRes
import androidx.appcompat.widget.Toolbar import androidx.appcompat.widget.Toolbar
import androidx.core.view.children import androidx.core.view.children
import androidx.core.view.isInvisible import androidx.core.view.isInvisible
import org.oxycblt.auxio.R import androidx.interpolator.view.animation.FastOutSlowInInterpolator
import org.oxycblt.auxio.util.getInteger import com.google.android.material.R as MR
import com.google.android.material.motion.MotionUtils
import kotlin.math.max
import kotlin.math.min
import org.oxycblt.auxio.util.logD import org.oxycblt.auxio.util.logD
class MultiToolbar class MultiToolbar
@ -37,6 +40,11 @@ constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr
FrameLayout(context, attrs, defStyleAttr) { FrameLayout(context, attrs, defStyleAttr) {
private var fadeThroughAnimator: ValueAnimator? = null private var fadeThroughAnimator: ValueAnimator? = null
private var currentlyVisible = 0 private var currentlyVisible = 0
private val matInterpolator =
MotionUtils.resolveThemeInterpolator(
context, MR.attr.motionEasingStandardInterpolator, FastOutSlowInInterpolator())
private val matDuration =
MotionUtils.resolveThemeDuration(context, MR.attr.motionDurationMedium3, 300).toLong()
override fun onFinishInflate() { override fun onFinishInflate() {
super.onFinishInflate() super.onFinishInflate()
@ -61,16 +69,6 @@ constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr
// Set up the target transitions for both the inner and selection toolbars. // Set up the target transitions for both the inner and selection toolbars.
val targetFromAlpha = 0f val targetFromAlpha = 0f
val targetToAlpha = 1f val targetToAlpha = 1f
val targetDuration =
// Since this view starts with the lowest toolbar index,
if (from < to) {
logD("Moving higher, use an entrance animation")
context.getInteger(R.integer.anim_fade_enter_duration).toLong()
} else {
logD("Moving lower, use an exit animation")
context.getInteger(R.integer.anim_fade_exit_duration).toLong()
}
val fromView = getChildAt(from) as Toolbar val fromView = getChildAt(from) as Toolbar
val toView = getChildAt(to) as Toolbar val toView = getChildAt(to) as Toolbar
@ -91,7 +89,8 @@ constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr
fadeThroughAnimator?.cancel() fadeThroughAnimator?.cancel()
fadeThroughAnimator = fadeThroughAnimator =
ValueAnimator.ofFloat(fromView.alpha, targetFromAlpha).apply { ValueAnimator.ofFloat(fromView.alpha, targetFromAlpha).apply {
duration = targetDuration duration = matDuration
interpolator = matInterpolator
addUpdateListener { setToolbarsAlpha(fromView, toView, it.animatedValue as Float) } addUpdateListener { setToolbarsAlpha(fromView, toView, it.animatedValue as Float) }
start() start()
} }
@ -99,15 +98,21 @@ constructor(context: Context, attrs: AttributeSet? = null, @AttrRes defStyleAttr
return true return true
} }
private fun setToolbarsAlpha(from: Toolbar, to: Toolbar, innerAlpha: Float) { private fun setToolbarsAlpha(from: Toolbar, to: Toolbar, ratio: Float) {
from.apply { val outRatio = min(ratio * 2, 1f)
alpha = innerAlpha to.apply {
isInvisible = innerAlpha == 0f scaleX = 1 - 0.05f * outRatio
scaleY = 1 - 0.05f * outRatio
alpha = 1 - outRatio
isInvisible = alpha == 0f
} }
to.apply { val inRatio = max(ratio - 0.5f, 0f) * 2
alpha = 1 - innerAlpha from.apply {
isInvisible = innerAlpha == 1f scaleX = 1 - 0.05f * (1 - inRatio)
scaleY = 1 - 0.05f * (1 - inRatio)
alpha = inRatio
isInvisible = alpha == 0f
} }
} }
} }