Update placeholders
parent
34903fc951
commit
820d3f2413
GPG Key ID:
676DEE768C17A9D7
@ -0,0 +1,81 @@
|
|||||||
|
package org.koitharu.kotatsu.core.ui.image
|
||||||
|
|
||||||
|
import android.animation.TimeAnimator
|
||||||
|
import android.content.Context
|
||||||
|
import android.graphics.Canvas
|
||||||
|
import android.graphics.ColorFilter
|
||||||
|
import android.graphics.PixelFormat
|
||||||
|
import android.graphics.drawable.Animatable
|
||||||
|
import android.graphics.drawable.Drawable
|
||||||
|
import android.view.animation.AccelerateDecelerateInterpolator
|
||||||
|
import androidx.core.graphics.ColorUtils
|
||||||
|
import androidx.interpolator.view.animation.FastOutSlowInInterpolator
|
||||||
|
import com.google.android.material.animation.ArgbEvaluatorCompat
|
||||||
|
import org.koitharu.kotatsu.core.util.ext.getThemeColor
|
||||||
|
import kotlin.math.abs
|
||||||
|
import com.google.android.material.R as materialR
|
||||||
|
|
||||||
|
class AnimatedPlaceholderDrawable(context: Context) : Drawable(), Animatable, TimeAnimator.TimeListener {
|
||||||
|
|
||||||
|
private val colorLow = context.getThemeColor(materialR.attr.colorSurfaceContainerLow)
|
||||||
|
private val colorHigh = context.getThemeColor(materialR.attr.colorSurfaceContainerHigh)
|
||||||
|
private var currentColor: Int = colorLow
|
||||||
|
private var alpha: Int = 255
|
||||||
|
private val interpolator = FastOutSlowInInterpolator()
|
||||||
|
private val period = 2000
|
||||||
|
private val timeAnimator = TimeAnimator()
|
||||||
|
|
||||||
|
init {
|
||||||
|
timeAnimator.setTimeListener(this)
|
||||||
|
updateColor()
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun draw(canvas: Canvas) {
|
||||||
|
if (!isRunning) {
|
||||||
|
updateColor()
|
||||||
|
start()
|
||||||
|
}
|
||||||
|
canvas.drawColor(currentColor)
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun setAlpha(alpha: Int) {
|
||||||
|
this.alpha = alpha
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun setColorFilter(colorFilter: ColorFilter?) {
|
||||||
|
throw UnsupportedOperationException("ColorFilter is not supported by PlaceholderDrawable")
|
||||||
|
}
|
||||||
|
|
||||||
|
@Deprecated("Deprecated in Java")
|
||||||
|
override fun getOpacity(): Int = PixelFormat.OPAQUE
|
||||||
|
|
||||||
|
override fun getAlpha(): Int = alpha
|
||||||
|
|
||||||
|
override fun onTimeUpdate(animation: TimeAnimator?, totalTime: Long, deltaTime: Long) {
|
||||||
|
if (callback != null) {
|
||||||
|
updateColor()
|
||||||
|
invalidateSelf()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun start() {
|
||||||
|
timeAnimator.start()
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun stop() {
|
||||||
|
timeAnimator.cancel()
|
||||||
|
}
|
||||||
|
|
||||||
|
override fun isRunning(): Boolean = timeAnimator.isStarted
|
||||||
|
|
||||||
|
private fun updateColor() {
|
||||||
|
val ph = period / 2
|
||||||
|
val fraction = abs((System.currentTimeMillis() % period) - ph) / ph.toFloat()
|
||||||
|
var color = ArgbEvaluatorCompat.getInstance()
|
||||||
|
.evaluate(interpolator.getInterpolation(fraction), colorLow, colorHigh)
|
||||||
|
if (alpha != 255) {
|
||||||
|
color = ColorUtils.setAlphaComponent(color, alpha)
|
||||||
|
}
|
||||||
|
currentColor = color
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue