blob: 88a5716939289f8385e9891bc0a825b1f2acb2e4 [file] [log] [blame]
package com.airbnb.lottie.samples
import android.graphics.PointF
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import com.airbnb.lottie.LottieProperty
import com.airbnb.lottie.model.KeyPath
import com.airbnb.lottie.utils.MiscUtils
import kotlinx.android.synthetic.main.activity_dynamic.*
private val COLORS = arrayOf(
0xff5a5f,
0x008489,
0xa61d55
)
private val EXTRA_JUMP = arrayOf(0f, 20f, 50f)
class DynamicActivity : AppCompatActivity() {
private var speed = 1
private var colorIndex = 0
private var extraJumpIndex = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_dynamic)
speedButton.setOnClickListener {
speed = ++speed % 4
updateButtonText()
}
colorButton.setOnClickListener {
colorIndex = (colorIndex + 1) % COLORS.size
updateButtonText()
}
jumpHeight.setOnClickListener {
extraJumpIndex = (extraJumpIndex + 1) % EXTRA_JUMP.size
updateButtonText()
}
jumpHeight.postDelayed({ setupValueCallbacks() }, 1000)
updateButtonText()
}
private fun setupValueCallbacks() {
animationView.addValueCallback(KeyPath("LeftArmWave"), LottieProperty.TIME_REMAP) { frameInfo ->
2 * speed.toFloat() * frameInfo.overallProgress
}
val shirt = KeyPath("Shirt", "Group 5", "Fill 1")
val leftArm = KeyPath("LeftArmWave", "LeftArm", "Group 6", "Fill 1")
val rightArm = KeyPath("RightArm", "Group 6", "Fill 1")
animationView.addValueCallback(shirt, LottieProperty.COLOR) { COLORS[colorIndex] }
animationView.addValueCallback(leftArm, LottieProperty.COLOR) { COLORS[colorIndex] }
animationView.addValueCallback(rightArm, LottieProperty.COLOR) { COLORS[colorIndex] }
val point = PointF()
animationView.addValueCallback(KeyPath("Body"), LottieProperty.TRANSFORM_POSITION) { frameInfo ->
val startX = frameInfo.startValue.x
var startY = frameInfo.startValue.y
var endY = frameInfo.endValue.y
if (startY > endY) {
startY += EXTRA_JUMP[extraJumpIndex]
} else if (endY > startY) {
endY += EXTRA_JUMP[extraJumpIndex]
}
point.set(startX, MiscUtils.lerp(startY, endY, frameInfo.interpolatedKeyframeProgress))
point
}
}
private fun updateButtonText() {
speedButton.text = "Wave: ${speed}x Speed"
jumpHeight.text = "Extra jump height ${EXTRA_JUMP[extraJumpIndex]}"
}
}