88 lines
4.2 KiB
Kotlin
88 lines
4.2 KiB
Kotlin
/*******************************************************************************
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* *
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* Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com> *
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* Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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package com.github.shadowsocks.widget
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import android.graphics.drawable.Drawable
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import android.support.annotation.DrawableRes
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import android.support.design.widget.FloatingActionButton
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import android.support.graphics.drawable.Animatable2Compat
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import android.support.graphics.drawable.AnimatedVectorDrawableCompat
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import com.github.shadowsocks.R
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import com.github.shadowsocks.bg.BaseService
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import java.util.*
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class ServiceButton(private val fab: FloatingActionButton) : Animatable2Compat.AnimationCallback() {
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private fun createIcon(@DrawableRes resId: Int): AnimatedVectorDrawableCompat {
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val result = AnimatedVectorDrawableCompat.create(fab.context, resId)!!
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result.registerAnimationCallback(this)
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return result
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}
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private val iconStopped by lazy { createIcon(R.drawable.ic_service_stopped) }
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private val iconConnecting by lazy { createIcon(R.drawable.ic_service_connecting) }
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private val iconConnected by lazy { createIcon(R.drawable.ic_service_connected) }
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private val iconStopping by lazy { createIcon(R.drawable.ic_service_stopping) }
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private val animationQueue = ArrayDeque<AnimatedVectorDrawableCompat>()
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fun changeState(state: Int, animate: Boolean) {
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when (state) {
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BaseService.CONNECTING -> changeState(iconConnecting, animate)
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BaseService.CONNECTED -> changeState(iconConnected, animate)
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BaseService.STOPPING -> changeState(iconStopping, animate)
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else -> changeState(iconStopped, animate)
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}
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}
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private fun counters(a: AnimatedVectorDrawableCompat, b: AnimatedVectorDrawableCompat): Boolean =
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a == iconStopped && b == iconConnecting ||
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a == iconConnecting && b == iconStopped ||
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a == iconConnected && b == iconStopping ||
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a == iconStopping && b == iconConnected
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private fun changeState(icon: AnimatedVectorDrawableCompat, animate: Boolean) {
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if (animate) {
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if (animationQueue.size < 2 || !counters(animationQueue.last, icon)) {
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animationQueue.add(icon)
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if (animationQueue.size == 1) {
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fab.setImageDrawable(icon)
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icon.start()
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}
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} else animationQueue.removeLast()
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} else {
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animationQueue.peekFirst()?.stop()
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animationQueue.clear()
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fab.setImageDrawable(icon)
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icon.stop()
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}
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}
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override fun onAnimationEnd(drawable: Drawable) {
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super.onAnimationEnd(drawable)
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var next = animationQueue.peek() ?: return
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if (next.current == drawable) {
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animationQueue.pop()
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next = animationQueue.peek() ?: return
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}
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fab.setImageDrawable(next)
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next.start()
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}
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}
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