Save manga page image

app/build.gradle

@@ -85,6 +85,8 @@ dependencies {
 	implementation 'com.davemorrissey.labs:subsampling-scale-image-view:3.10.0'
 	implementation 'com.tomclaw.cache:cache:1.0'
 
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
+
 	testImplementation 'junit:junit:4.13'
 	testImplementation 'androidx.test:core:1.2.0'
 	testImplementation 'org.mockito:mockito-core:2.23.0'

app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
 	<uses-permission android:name="android.permission.INTERNET" />
 	<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 	<uses-permission android:name="android.permission.WAKE_LOCK" />
+	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
 	<application
 		android:name="org.koitharu.kotatsu.KotatsuApp"

app/src/main/java/org/koitharu/kotatsu/ui/common/BaseActivity.kt

@@ -1,9 +1,12 @@
 package org.koitharu.kotatsu.ui.common
 
+import android.content.pm.PackageManager
 import android.view.KeyEvent
 import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.widget.Toolbar
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import moxy.MvpAppCompatActivity
 import org.koin.core.KoinComponent
 import org.koitharu.kotatsu.BuildConfig
@@ -11,6 +14,8 @@ import org.koitharu.kotatsu.R
 
 abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 
+	private var permissionCallback: ((Boolean) -> Unit)? = null
+
 	override fun setContentView(layoutResID: Int) {
 		super.setContentView(layoutResID)
 		setupToolbar()
@@ -30,6 +35,33 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 		true
 	} else super.onOptionsItemSelected(item)
 
+	fun requestPermission(permission: String, callback: (Boolean) -> Unit) {
+		if (ContextCompat.checkSelfPermission(
+				this,
+				permission
+			) == PackageManager.PERMISSION_GRANTED
+		) {
+			callback(true)
+		} else {
+			permissionCallback = callback
+			ActivityCompat.requestPermissions(this, arrayOf(permission), REQUEST_PERMISSION)
+		}
+	}
+
+	override fun onRequestPermissionsResult(
+		requestCode: Int,
+		permissions: Array<out String>,
+		grantResults: IntArray
+	) {
+		super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+		if (requestCode == REQUEST_PERMISSION) {
+			grantResults.singleOrNull()?.let {
+				permissionCallback?.invoke(it == PackageManager.PERMISSION_GRANTED)
+			}
+			permissionCallback = null
+		}
+	}
+
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
 		//TODO remove. Just for testing
 		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
@@ -38,4 +70,9 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 		}
 		return super.onKeyDown(keyCode, event)
 	}
+
+	private companion object {
+
+		const val REQUEST_PERMISSION = 30
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/common/list/BaseRecyclerAdapter.kt

@@ -14,6 +14,8 @@ abstract class BaseRecyclerAdapter<T, E>(private val onItemClickListener: OnRecy
 
 	val items get() = dataSet.toImmutableList()
 
+	val hasItems get() = dataSet.isNotEmpty()
+
 	init {
 		@Suppress("LeakingThis")
 		setHasStableIds(true)

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -1,15 +1,18 @@
 package org.koitharu.kotatsu.ui.reader
 
+import android.Manifest
 import android.content.Context
 import android.content.Intent
+import android.net.Uri
 import android.os.Bundle
+import android.view.Gravity
 import android.view.Menu
 import android.view.MenuItem
 import android.view.MotionEvent
-import android.widget.Button
 import android.widget.Toast
 import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
+import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_reader.*
 import moxy.ktx.moxyPresenter
 import org.koitharu.kotatsu.R
@@ -21,6 +24,7 @@ import org.koitharu.kotatsu.ui.common.BaseFullscreenActivity
 import org.koitharu.kotatsu.ui.reader.thumbnails.OnPageSelectListener
 import org.koitharu.kotatsu.ui.reader.thumbnails.PagesThumbnailsSheet
 import org.koitharu.kotatsu.utils.GridTouchHelper
+import org.koitharu.kotatsu.utils.ShareHelper
 import org.koitharu.kotatsu.utils.anim.Motion
 import org.koitharu.kotatsu.utils.ext.*
 
@@ -94,10 +98,26 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			true
 		}
 		R.id.action_pages_thumbs -> {
+			if (adapter.hasItems) {
 				PagesThumbnailsSheet.show(
 					supportFragmentManager, adapter.items,
 					state.chapter?.name ?: title?.toString().orEmpty()
 				)
+			} else {
+				showWaitWhileLoading()
+			}
+			true
+		}
+		R.id.action_save_page -> {
+			if (adapter.hasItems) {
+				requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) {
+					if (it) {
+						presenter.savePage(contentResolver, adapter.getItem(pager.currentItem))
+					}
+				}
+			} else {
+				showWaitWhileLoading()
+			}
 			true
 		}
 		else -> super.onOptionsItemSelected(item)
@@ -117,6 +137,11 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			setTitle(R.string.error_occurred)
 			setMessage(e.message)
 			setPositiveButton(R.string.close, null)
+			if (!adapter.hasItems) {
+				setOnDismissListener {
+					finish()
+				}
+			}
 		}
 	}
 
@@ -152,8 +177,8 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		) {
 			false
 		} else {
-			val target = rootLayout.hitTest(rawX, rawY)
+			val targets = rootLayout.hitTest(rawX, rawY)
-			target !is Button
+			targets.none { it.hasOnClickListeners() }
 		}
 	}
 
@@ -178,6 +203,23 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		}
 	}
 
+	override fun onPageSaved(uri: Uri?) {
+		if (uri != null) {
+			Snackbar.make(pager, R.string.page_saved, Snackbar.LENGTH_LONG)
+				.setAction(R.string.share) {
+					ShareHelper.shareImage(this, uri)
+				}.show()
+		} else {
+			Snackbar.make(pager, R.string.error_occurred, Snackbar.LENGTH_SHORT).show()
+		}
+	}
+
+	private fun showWaitWhileLoading() {
+		Toast.makeText(this, R.string.wait_for_loading_finish, Toast.LENGTH_SHORT).apply {
+			setGravity(Gravity.CENTER, 0, 0)
+		}.show()
+	}
+
 	companion object {
 
 		private const val EXTRA_STATE = "state"

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderPresenter.kt

@@ -1,13 +1,23 @@
 package org.koitharu.kotatsu.ui.reader
 
+import android.content.ContentResolver
+import android.webkit.URLUtil
+import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import moxy.InjectViewState
+import okhttp3.OkHttpClient
+import okhttp3.Request
 import org.koitharu.kotatsu.BuildConfig
-import org.koitharu.kotatsu.domain.history.HistoryRepository
+import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.domain.MangaProviderFactory
+import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.common.BasePresenter
+import org.koitharu.kotatsu.utils.MediaStoreCompat
+import org.koitharu.kotatsu.utils.ext.await
+import org.koitharu.kotatsu.utils.ext.contentDisposition
+import org.koitharu.kotatsu.utils.ext.mimeType
 
 @InjectViewState
 class ReaderPresenter : BasePresenter<ReaderView>() {
@@ -45,4 +55,32 @@ class ReaderPresenter : BasePresenter<ReaderView>() {
 		}
 	}
 
+	fun savePage(resolver: ContentResolver, page: MangaPage) {
+		launch(Dispatchers.IO) {
+			try {
+				val repo = MangaProviderFactory.create(page.source)
+				val url = repo.getPageFullUrl(page)
+				val request = Request.Builder()
+					.url(url)
+					.get()
+					.build()
+				val uri = getKoin().get<OkHttpClient>().newCall(request).await().use { response ->
+					val fileName =
+						URLUtil.guessFileName(url, response.contentDisposition, response.mimeType)
+					MediaStoreCompat.insertImage(resolver, fileName) {
+						response.body!!.byteStream().copyTo(it)
+					}
+				}
+				withContext(Dispatchers.Main) {
+					viewState.onPageSaved(uri)
+				}
+			} catch (e: CancellationException) {
+			} catch (e: Exception) {
+				withContext(Dispatchers.Main) {
+					viewState.onPageSaved(null)
+				}
+			}
+		}
+	}
+
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderView.kt

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.ui.reader
 
+import android.net.Uri
 import moxy.MvpView
 import moxy.viewstate.strategy.AddToEndSingleStrategy
 import moxy.viewstate.strategy.OneExecutionStateStrategy
@@ -16,4 +17,7 @@ interface ReaderView : MvpView {
 
 	@StateStrategyType(OneExecutionStateStrategy::class)
 	fun onError(e: Exception)
+
+	@StateStrategyType(OneExecutionStateStrategy::class)
+	fun onPageSaved(uri: Uri?)
 }

app/src/main/java/org/koitharu/kotatsu/utils/MediaStoreCompat.kt

@@ -0,0 +1,54 @@
+package org.koitharu.kotatsu.utils
+
+import android.content.ContentResolver
+import android.content.ContentValues
+import android.net.Uri
+import android.os.Build
+import android.provider.MediaStore
+import android.webkit.MimeTypeMap
+import org.koitharu.kotatsu.BuildConfig
+import java.io.OutputStream
+
+object MediaStoreCompat {
+
+	@JvmStatic
+	fun insertImage(
+		resolver: ContentResolver,
+		fileName: String,
+		block: (OutputStream) -> Unit
+	): Uri? {
+		val name = fileName.substringBeforeLast('.')
+		val cv = ContentValues(7)
+		cv.put(MediaStore.Images.Media.DISPLAY_NAME, name)
+		cv.put(MediaStore.Images.Media.TITLE, name)
+		cv.put(
+			MediaStore.Images.Media.MIME_TYPE,
+			MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileName.substringAfterLast('.'))
+		)
+		cv.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis())
+		cv.put(MediaStore.Images.Media.DATE_MODIFIED, System.currentTimeMillis())
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+			cv.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis())
+			cv.put(MediaStore.Images.Media.IS_PENDING, 1)
+		}
+		var uri: Uri? = null
+		try {
+			uri = resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, cv)
+			resolver.openOutputStream(uri!!)?.use(block)
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+				cv.clear()
+				cv.put(MediaStore.Images.Media.IS_PENDING, 0)
+				resolver.update(uri, cv, null, null)
+			}
+		} catch (e: Exception) {
+			if (BuildConfig.DEBUG) {
+				e.printStackTrace()
+			}
+			uri?.let {
+				resolver.delete(it, null, null)
+			}
+			uri = null
+		}
+		return uri
+	}
+}

app/src/main/java/org/koitharu/kotatsu/utils/ShareHelper.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.utils
 
 import android.content.Context
 import android.content.Intent
+import android.net.Uri
 import androidx.core.content.FileProvider
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
@@ -19,7 +20,8 @@ object ShareHelper {
 			append("\n \n")
 			append(manga.url)
 		})
-		val shareIntent = Intent.createChooser(intent, context.getString(R.string.share_s, manga.title))
+		val shareIntent =
+			Intent.createChooser(intent, context.getString(R.string.share_s, manga.title))
 		context.startActivity(shareIntent)
 	}
 
@@ -29,7 +31,17 @@ object ShareHelper {
 		val intent = Intent(Intent.ACTION_SEND)
 		intent.setDataAndType(uri, context.contentResolver.getType(uri))
 		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-		val shareIntent = Intent.createChooser(intent, context.getString(R.string.share_s, file.name))
+		val shareIntent =
+			Intent.createChooser(intent, context.getString(R.string.share_s, file.name))
+		context.startActivity(shareIntent)
+	}
+
+	@JvmStatic
+	fun shareImage(context: Context, uri: Uri) {
+		val intent = Intent(Intent.ACTION_SEND)
+		intent.setDataAndType(uri, context.contentResolver.getType(uri))
+		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+		val shareIntent = Intent.createChooser(intent, context.getString(R.string.share_image))
 		context.startActivity(shareIntent)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/utils/ext/HttpExt.kt

@@ -0,0 +1,9 @@
+package org.koitharu.kotatsu.utils.ext
+
+import okhttp3.Response
+
+val Response.mimeType: String?
+	get() = body?.contentType()?.run { "$type/$subtype" }
+
+val Response.contentDisposition: String?
+	get() = header("Content-Disposition")

app/src/main/java/org/koitharu/kotatsu/utils/ext/ViewExt.kt

@@ -12,6 +12,7 @@ import androidx.annotation.MenuRes
 import androidx.appcompat.widget.PopupMenu
 import androidx.core.view.children
 import androidx.core.view.isGone
+import androidx.core.view.isVisible
 import androidx.core.view.postDelayed
 import androidx.drawerlayout.widget.DrawerLayout
 import androidx.recyclerview.widget.GridLayoutManager
@@ -109,20 +110,21 @@ fun View.showPopupMenu(@MenuRes menuRes: Int, onPrepare:((Menu) -> Unit)? = null
 	menu.show()
 }
 
-fun ViewGroup.hitTest(x: Int, y: Int): View? {
+fun ViewGroup.hitTest(x: Int, y: Int): Set<View> {
+	val result = HashSet<View>(4)
 	val rect = Rect()
 	for (child in children) {
-		if (child.getGlobalVisibleRect(rect)) {
+		if (child.isVisible && child.getGlobalVisibleRect(rect)) {
 			if (rect.contains(x, y)) {
-				return if (child is ViewGroup) {
+				if (child is ViewGroup) {
-					child.hitTest(x, y)
+					result += child.hitTest(x, y)
 				} else {
-					child
+					result += child
 				}
 			}
 		}
 	}
-	return null
+	return result
 }
 
 fun View.hasGlobalPoint(x: Int, y: Int): Boolean {

app/src/main/res/drawable/ic_page_image.xml

@@ -0,0 +1,11 @@
+<vector
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="24dp"
+	android:height="24dp"
+	android:tint="?attr/colorControlNormal"
+	android:viewportWidth="24"
+	android:viewportHeight="24">
+	<path
+		android:fillColor="#000"
+		android:pathData="M14,2L20,8V20A2,2 0 0,1 18,22H6A2,2 0 0,1 4,20V4A2,2 0 0,1 6,2H14M18,20V9H13V4H6V20H18M17,13V19H7L12,14L14,16M10,10.5A1.5,1.5 0 0,1 8.5,12A1.5,1.5 0 0,1 7,10.5A1.5,1.5 0 0,1 8.5,9A1.5,1.5 0 0,1 10,10.5Z" />
+</vector>

app/src/main/res/menu/opt_reader_bottom.xml

@@ -10,6 +10,12 @@
 		android:visible="false"
 		app:showAsAction="ifRoom" />
 
+	<item
+		android:id="@+id/action_save_page"
+		android:icon="@drawable/ic_page_image"
+		android:title="@string/save_page"
+		app:showAsAction="ifRoom" />
+
 	<item
 		android:id="@+id/action_pages_thumbs"
 		android:icon="@drawable/ic_grid"

app/src/main/res/values/strings.xml

@@ -65,4 +65,8 @@
 	<string name="text_clear_history_prompt">Are you rally want to clear all your reading history? This action cannot be undone.</string>
 	<string name="remove">Remove</string>
 	<string name="_s_removed_from_history">\"%s\" removed from history</string>
+	<string name="wait_for_loading_finish">Wait for the load to finish</string>
+	<string name="save_page">Save page</string>
+	<string name="page_saved">Page saved successful</string>
+	<string name="share_image">Share image</string>
 </resources>