132 lines
3.3 KiB
Kotlin
132 lines
3.3 KiB
Kotlin
package jp.juggler.apng.sample
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import android.content.Context
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import android.content.Intent
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import android.graphics.Bitmap
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import android.os.Bundle
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import android.os.Environment
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import android.support.v7.app.AppCompatActivity
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import android.util.Log
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import android.view.View
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import android.widget.TextView
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import jp.juggler.apng.ApngFrames
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import kotlinx.coroutines.*
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import java.io.File
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import java.io.FileOutputStream
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import kotlin.coroutines.CoroutineContext
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class ActViewer : AppCompatActivity() , CoroutineScope {
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companion object {
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const val TAG="ActViewer"
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const val EXTRA_RES_ID = "res_id"
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const val EXTRA_CAPTION = "caption"
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fun open(context : Context, resId : Int, caption : String) {
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val intent = Intent(context, ActViewer::class.java)
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intent.putExtra(EXTRA_RES_ID, resId)
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intent.putExtra(EXTRA_CAPTION, caption)
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context.startActivity(intent)
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}
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}
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private lateinit var apngView : ApngView
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private lateinit var tvError : TextView
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private lateinit var activityJob: Job
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override val coroutineContext: CoroutineContext
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get() = Dispatchers.Main + activityJob
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override fun onCreate(savedInstanceState : Bundle?) {
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activityJob = Job()
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super.onCreate(savedInstanceState)
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val intent = this.intent
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val resId = intent.getIntExtra(EXTRA_RES_ID, 0)
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this.title = intent.getStringExtra(EXTRA_CAPTION) ?: "?"
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setContentView(R.layout.act_apng_view)
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this.apngView = findViewById(R.id.apngView)
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this.tvError = findViewById(R.id.tvError)
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apngView.setOnLongClickListener {
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val apngFrames = apngView.apngFrames
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if( apngFrames != null ){
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save(apngFrames)
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}
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return@setOnLongClickListener true
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}
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launch{
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var apngFrames : ApngFrames? = null
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try {
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apngFrames = async(Dispatchers.IO) {
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resources.openRawResource(resId).use {
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ApngFrames.parseApng(
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it,
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1024,
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debug = true
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)
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}
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}.await()
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apngView.visibility = View.VISIBLE
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tvError.visibility = View.GONE
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apngView.apngFrames = apngFrames
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apngFrames = null
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} catch(ex : Throwable) {
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ex.printStackTrace()
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Log.e(ActList.TAG, "load error: ${ex.javaClass.simpleName} ${ex.message}")
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val message = "%s %s".format(ex.javaClass.simpleName, ex.message)
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if(! isDestroyed) {
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apngView.visibility = View.GONE
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tvError.visibility = View.VISIBLE
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tvError.text = message
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}
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}finally{
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apngFrames?.dispose()
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}
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}
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}
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override fun onDestroy() {
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super.onDestroy()
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apngView.apngFrames?.dispose()
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activityJob.cancel()
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}
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private fun save(apngFrames:ApngFrames){
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val title = this.title
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launch(Dispatchers.IO){
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val dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
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dir.mkdirs()
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if(! dir.exists() ) {
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Log.e(TAG, "Directory not exists: ${dir}")
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return@launch
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}
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val frames = apngFrames.frames
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if( frames == null ){
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Log.e(TAG, "missing frames")
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return@launch
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}
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var i=0
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for( f in frames) {
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Log.d(TAG, "${title}[${i}] timeWidth=${f.timeWidth}")
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val bitmap = f.bitmap
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FileOutputStream( File(dir,"${title}_${i}.png")).use{ fo ->
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bitmap.compress (Bitmap.CompressFormat.PNG,100,fo)
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}
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++i
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}
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}
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}
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} |