354 lines
14 KiB
Kotlin
354 lines
14 KiB
Kotlin
/* Copyright 2017 Andrew Dawson
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* 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 along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky
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import android.Manifest
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import android.animation.Animator
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import android.animation.AnimatorListenerAdapter
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import android.app.DownloadManager
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import android.content.ClipData
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import android.content.ClipboardManager
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import android.content.Context
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import android.content.Intent
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import android.content.pm.PackageManager
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import android.graphics.Bitmap
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import android.graphics.Color
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import android.net.Uri
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import android.os.Bundle
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import android.os.Environment
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import android.transition.Transition
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import android.util.Log
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import android.view.Menu
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import android.view.MenuItem
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import android.view.View
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import android.webkit.MimeTypeMap
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import android.widget.Toast
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import androidx.core.content.FileProvider
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import androidx.fragment.app.FragmentActivity
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import androidx.lifecycle.Lifecycle
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import androidx.viewpager2.adapter.FragmentStateAdapter
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import androidx.viewpager2.widget.ViewPager2
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import com.bumptech.glide.Glide
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import com.bumptech.glide.request.FutureTarget
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import com.keylesspalace.tusky.BuildConfig.APPLICATION_ID
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import com.keylesspalace.tusky.entity.Attachment
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import com.keylesspalace.tusky.fragment.ViewImageFragment
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import com.keylesspalace.tusky.pager.AvatarImagePagerAdapter
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import com.keylesspalace.tusky.pager.ImagePagerAdapter
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import com.keylesspalace.tusky.util.getTemporaryMediaFilename
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import com.keylesspalace.tusky.viewdata.AttachmentViewData
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import com.uber.autodispose.android.lifecycle.AndroidLifecycleScopeProvider
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import com.uber.autodispose.autoDispose
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import io.reactivex.Single
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import io.reactivex.android.schedulers.AndroidSchedulers
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import io.reactivex.schedulers.Schedulers
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import kotlinx.android.synthetic.main.activity_view_media.*
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import java.io.File
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import java.io.FileNotFoundException
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import java.io.FileOutputStream
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import java.io.IOException
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import java.util.*
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typealias ToolbarVisibilityListener = (isVisible: Boolean) -> Unit
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class ViewMediaActivity : BaseActivity(), ViewImageFragment.PhotoActionsListener {
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companion object {
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private const val EXTRA_ATTACHMENTS = "attachments"
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private const val EXTRA_ATTACHMENT_INDEX = "index"
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private const val EXTRA_AVATAR_URL = "avatar"
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private const val TAG = "ViewMediaActivity"
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@JvmStatic
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fun newIntent(context: Context?, attachments: List<AttachmentViewData>, index: Int): Intent {
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val intent = Intent(context, ViewMediaActivity::class.java)
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intent.putParcelableArrayListExtra(EXTRA_ATTACHMENTS, ArrayList(attachments))
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intent.putExtra(EXTRA_ATTACHMENT_INDEX, index)
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return intent
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}
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fun newAvatarIntent(context: Context, url: String): Intent {
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val intent = Intent(context, ViewMediaActivity::class.java)
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intent.putExtra(EXTRA_AVATAR_URL, url)
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return intent
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}
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}
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var isToolbarVisible = true
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private set
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private var attachments: ArrayList<AttachmentViewData>? = null
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private val toolbarVisibilityListeners = mutableListOf<ToolbarVisibilityListener>()
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fun addToolbarVisibilityListener(listener: ToolbarVisibilityListener): Function0<Boolean> {
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this.toolbarVisibilityListeners.add(listener)
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listener(isToolbarVisible)
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return { toolbarVisibilityListeners.remove(listener) }
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_view_media)
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supportPostponeEnterTransition()
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// Gather the parameters.
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attachments = intent.getParcelableArrayListExtra(EXTRA_ATTACHMENTS)
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val initialPosition = intent.getIntExtra(EXTRA_ATTACHMENT_INDEX, 0)
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// Adapter is actually of existential type PageAdapter & SharedElementsTransitionListener
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// but it cannot be expressed and if I don't specify type explicitly compilation fails
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// (probably a bug in compiler)
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val adapter: ViewMediaAdapter = if (attachments != null) {
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val realAttachs = attachments!!.map(AttachmentViewData::attachment)
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// Setup the view pager.
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ImagePagerAdapter(this, realAttachs, initialPosition)
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} else {
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val avatarUrl = intent.getStringExtra(EXTRA_AVATAR_URL)
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?: throw IllegalArgumentException("attachment list or avatar url has to be set")
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AvatarImagePagerAdapter(this, avatarUrl)
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}
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viewPager.adapter = adapter
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viewPager.setCurrentItem(initialPosition, false)
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viewPager.registerOnPageChangeCallback(object: ViewPager2.OnPageChangeCallback() {
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override fun onPageSelected(position: Int) {
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toolbar.title = getPageTitle(position)
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}
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})
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// Setup the toolbar.
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setSupportActionBar(toolbar)
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val actionBar = supportActionBar
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if (actionBar != null) {
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actionBar.setDisplayHomeAsUpEnabled(true)
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actionBar.setDisplayShowHomeEnabled(true)
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actionBar.title = getPageTitle(initialPosition)
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}
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toolbar.setNavigationOnClickListener { supportFinishAfterTransition() }
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toolbar.setOnMenuItemClickListener { item: MenuItem ->
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when (item.itemId) {
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R.id.action_download -> requestDownloadMedia()
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R.id.action_open_status -> onOpenStatus()
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R.id.action_share_media -> shareMedia()
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R.id.action_copy_media_link -> copyLink()
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}
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true
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}
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window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LOW_PROFILE
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window.statusBarColor = Color.BLACK
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window.sharedElementEnterTransition.addListener(object : NoopTransitionListener {
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override fun onTransitionEnd(transition: Transition) {
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adapter.onTransitionEnd(viewPager.currentItem)
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window.sharedElementEnterTransition.removeListener(this)
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}
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})
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}
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override fun onCreateOptionsMenu(menu: Menu): Boolean {
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if (attachments != null) {
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menuInflater.inflate(R.menu.view_media_toolbar, menu)
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return true
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}
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return false
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}
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override fun onPrepareOptionsMenu(menu: Menu?): Boolean {
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menu?.findItem(R.id.action_share_media)?.isEnabled = !isCreating
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return true
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}
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override fun onBringUp() {
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supportStartPostponedEnterTransition()
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}
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override fun onDismiss() {
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supportFinishAfterTransition()
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}
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override fun onPhotoTap() {
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isToolbarVisible = !isToolbarVisible
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for (listener in toolbarVisibilityListeners) {
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listener(isToolbarVisible)
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}
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val visibility = if (isToolbarVisible) View.VISIBLE else View.INVISIBLE
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val alpha = if (isToolbarVisible) 1.0f else 0.0f
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toolbar.animate().alpha(alpha)
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.setListener(object : AnimatorListenerAdapter() {
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override fun onAnimationEnd(animation: Animator) {
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toolbar.visibility = visibility
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animation.removeListener(this)
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}
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})
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.start()
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}
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private fun getPageTitle(position: Int): CharSequence {
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if(attachments == null) {
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return ""
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}
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return String.format(Locale.getDefault(), "%d/%d", position + 1, attachments?.size)
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}
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private fun downloadMedia() {
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val url = attachments!![viewPager.currentItem].attachment.url
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val filename = Uri.parse(url).lastPathSegment
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Toast.makeText(applicationContext, resources.getString(R.string.download_image, filename), Toast.LENGTH_SHORT).show()
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val downloadManager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
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val request = DownloadManager.Request(Uri.parse(url))
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request.setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES,
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getString(R.string.app_name) + "/" + filename)
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downloadManager.enqueue(request)
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}
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private fun requestDownloadMedia() {
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requestPermissions(arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE)) { _, grantResults ->
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if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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downloadMedia()
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} else {
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showErrorDialog(toolbar, R.string.error_media_download_permission, R.string.action_retry) { requestDownloadMedia() }
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}
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}
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}
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private fun onOpenStatus() {
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val attach = attachments!![viewPager.currentItem]
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startActivityWithSlideInAnimation(ViewThreadActivity.startIntent(this, attach.statusId, attach.statusUrl))
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}
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private fun copyLink() {
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val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
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clipboard.setPrimaryClip(ClipData.newPlainText(null, attachments!![viewPager.currentItem].attachment.url))
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}
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private fun shareMedia() {
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val directory = applicationContext.getExternalFilesDir("Tusky")
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if (directory == null || !(directory.exists())) {
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Log.e(TAG, "Error obtaining directory to save temporary media.")
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return
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}
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val attachment = attachments!![viewPager.currentItem].attachment
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when (attachment.type) {
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Attachment.Type.IMAGE -> shareImage(directory, attachment.url)
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Attachment.Type.VIDEO,
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Attachment.Type.GIFV -> shareVideo(directory, attachment.url)
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else -> Log.e(TAG, "Unknown media format for sharing.")
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}
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}
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private fun shareFile(file: File, mimeType: String?) {
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val sendIntent = Intent()
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sendIntent.action = Intent.ACTION_SEND
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sendIntent.putExtra(Intent.EXTRA_STREAM, FileProvider.getUriForFile(applicationContext, "$APPLICATION_ID.fileprovider", file))
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sendIntent.type = mimeType
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startActivity(Intent.createChooser(sendIntent, resources.getText(R.string.send_media_to)))
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}
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private var isCreating: Boolean = false
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private fun shareImage(directory: File, url: String) {
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isCreating = true
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progressBarShare.visibility = View.VISIBLE
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invalidateOptionsMenu()
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val file = File(directory, getTemporaryMediaFilename("png"))
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val futureTask: FutureTarget<Bitmap> =
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Glide.with(applicationContext).asBitmap().load(Uri.parse(url)).submit()
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Single.fromCallable {
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val bitmap = futureTask.get()
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try {
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val stream = FileOutputStream(file)
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bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream)
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stream.close()
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return@fromCallable true
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} catch (fnfe: FileNotFoundException) {
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Log.e(TAG, "Error writing temporary media.")
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} catch (ioe: IOException) {
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Log.e(TAG, "Error writing temporary media.")
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}
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return@fromCallable false
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}
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.subscribeOn(Schedulers.io())
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.observeOn(AndroidSchedulers.mainThread())
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.doOnDispose {
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futureTask.cancel(true)
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}
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.autoDispose(AndroidLifecycleScopeProvider.from(this, Lifecycle.Event.ON_DESTROY))
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.subscribe(
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{ result ->
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Log.d(TAG, "Download image result: $result")
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isCreating = false
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invalidateOptionsMenu()
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progressBarShare.visibility = View.GONE
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if (result)
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shareFile(file, "image/png")
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},
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{ error ->
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isCreating = false
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invalidateOptionsMenu()
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progressBarShare.visibility = View.GONE
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Log.e(TAG, "Failed to download image", error)
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}
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)
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}
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private fun shareVideo(directory: File, url: String) {
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val uri = Uri.parse(url)
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val mimeTypeMap = MimeTypeMap.getSingleton()
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val extension = MimeTypeMap.getFileExtensionFromUrl(url)
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val mimeType = mimeTypeMap.getMimeTypeFromExtension(extension)
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val filename = getTemporaryMediaFilename(extension)
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val file = File(directory, filename)
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val downloadManager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
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val request = DownloadManager.Request(uri)
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request.setDestinationUri(Uri.fromFile(file))
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request.setVisibleInDownloadsUi(false)
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downloadManager.enqueue(request)
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shareFile(file, mimeType)
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}
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}
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abstract class ViewMediaAdapter(activity: FragmentActivity): FragmentStateAdapter(activity) {
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abstract fun onTransitionEnd(position: Int)
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}
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interface NoopTransitionListener : Transition.TransitionListener {
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override fun onTransitionEnd(transition: Transition) {
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}
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override fun onTransitionResume(transition: Transition) {
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}
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override fun onTransitionPause(transition: Transition) {
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}
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override fun onTransitionCancel(transition: Transition) {
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}
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override fun onTransitionStart(transition: Transition) {
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}
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}
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