Add a PDF navigator

r2-navigator/build.gradle

@@ -51,27 +51,40 @@ dependencies {
     implementation 'androidx.webkit:webkit:1.1.0'
     implementation "androidx.legacy:legacy-support-v4:1.0.0"
     implementation "com.google.android.material:material:1.2.0-alpha03"
-    implementation "androidx.recyclerview:recyclerview:1.1.0"
     implementation 'joda-time:joda-time:2.9.9'
-    implementation "androidx.legacy:legacy-support-core-ui:1.0.0"
 
     implementation 'com.duolingo.open:rtl-viewpager:1.0.3'
-    implementation 'androidx.viewpager2:viewpager2:1.0.0'
 
     implementation 'com.jakewharton.timber:timber:4.7.1'
 
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.2.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.6'
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1'
 
     implementation 'org.zeroturnaround:zt-zip:1.13'
 
     implementation 'org.jsoup:jsoup:1.10.3'
+    api 'com.github.barteksc:android-pdf-viewer:2.8.2'
 
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.2.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
     testImplementation "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
 
+    implementation "androidx.activity:activity-ktx:1.1.0"
+    implementation "androidx.appcompat:appcompat:1.2.0-beta01"
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation "androidx.core:core-ktx:1.2.0"
+    implementation "androidx.fragment:fragment-ktx:1.2.4"
+    implementation "androidx.legacy:legacy-support-core-ui:1.0.0"
+    implementation "androidx.legacy:legacy-support-v4:1.0.0"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.2.0"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:2.2.0"
+    implementation "androidx.recyclerview:recyclerview:1.1.0"
+    implementation 'androidx.viewpager2:viewpager2:1.0.0'
+    implementation 'androidx.webkit:webkit:1.1.0'
+
     // ChrisBane/PhotoView ( for the Zoom handling )
     implementation 'com.github.chrisbanes:PhotoView:2.1.4'
 }

r2-navigator/src/main/AndroidManifest.xml

@@ -29,6 +29,9 @@
         <activity
             android:name=".divina.R2DiViNaActivity"
             android:theme="@style/AppTheme" />
+        <activity
+            android:name=".pdf.R2PdfActivity"
+            android:theme="@style/AppTheme" />
 
     </application>
 

r2-navigator/src/main/java/org/readium/r2/navigator/IR2Activity.kt

@@ -10,13 +10,14 @@
 package org.readium.r2.navigator
 
 import android.content.SharedPreferences
+import android.graphics.PointF
 import android.view.View
+import androidx.lifecycle.LiveData
 import org.readium.r2.navigator.pager.R2ViewPager
 import org.readium.r2.shared.publication.Link
 import org.readium.r2.shared.publication.Locator
 import org.readium.r2.shared.publication.Publication
 import org.readium.r2.shared.publication.ReadingProgression
-import java.net.URL
 
 interface IR2Activity {
 
@@ -51,59 +52,32 @@ interface IR2TTS {
 
 
 interface Navigator {
-    val currentLocation: Locator?
-    fun go(locator: Locator, animated: Boolean, completion: () -> Unit): Boolean
-    fun go(link: Link, animated: Boolean, completion: () -> Unit): Boolean
-    fun goForward(animated: Boolean, completion: () -> Unit): Boolean
-    fun goBackward(animated: Boolean, completion: () -> Unit): Boolean
 
-}
-
-fun Navigator.go(locator: Locator, animated: Boolean = false, completion: () -> Unit = {}): Boolean =
-        go(locator = locator, animated = animated, completion = completion)
+    val currentLocator: LiveData<Locator?>
 
-fun Navigator.go(link: Link, animated: Boolean = false, completion: () -> Unit = {}): Boolean =
-        go(link = link, animated = animated, completion = completion)
+    fun go(locator: Locator, animated: Boolean = false, completion: () -> Unit = {}): Boolean
+    fun go(link: Link, animated: Boolean = false, completion: () -> Unit = {}): Boolean
+    fun goForward(animated: Boolean = false, completion: () -> Unit = {}): Boolean
+    fun goBackward(animated: Boolean = false, completion: () -> Unit = {}): Boolean
 
-fun Navigator.goForward(animated: Boolean = false, completion: () -> Unit = {}): Boolean =
-        goForward(animated = animated, completion = completion)
+    @Deprecated("Use [currentLocator] instead", ReplaceWith("currentLocator.value"))
+    val currentLocation: Locator? get() = currentLocator.value
 
-fun Navigator.goBackward(animated: Boolean = false, completion: () -> Unit = {}): Boolean =
-        goBackward(animated = animated, completion = completion)
+    interface Listener {
+    }
 
+    interface VisualListener : Listener {
+        fun onTap(point: PointF): Boolean = false
+    }
+}
 
 interface NavigatorDelegate {
+    @Deprecated("Observe [currentLocator] instead")
     fun locationDidChange(navigator: Navigator? = null, locator: Locator)
-
-    // present error message
-    fun presentError(navigator: Navigator? = null, error: NavigatorError) {}
-
-    // present external url
-    fun presentExternalURL(navigator: Navigator? = null, url: URL) {}
-}
-
-
-//public fun NavigatorDelegate.navigator(navigator: Navigator, url: URL) {
-//    if (UIApplication.shared.canOpenURL(url)) {
-//        UIApplication.shared.openURL(url)
-//    }
-//}
-
-
-sealed class NavigatorError : Exception() {
-    object copyForbidden : NavigatorError()
-
-    val errorDescription: String?
-        get() {
-            return when (this) {
-                is copyForbidden -> "NavigatorError.copyForbidden"
-            }
-        }
 }
 
 
 interface VisualNavigator : Navigator {
-    //    val view: UIView
     val readingProgression: ReadingProgression
 
     fun goLeft(animated: Boolean, completion: () -> Unit): Boolean
@@ -130,12 +104,3 @@ fun VisualNavigator.goRight(animated: Boolean = false, completion: () -> Unit =
             goBackward(animated = animated, completion = completion)
     }
 }
-
-
-//public interface VisualNavigatorDelegate: NavigatorDelegate {
-//    fun navigator(navigator: VisualNavigator, point: CGPoint)
-//}
-
-//public fun VisualNavigatorDelegate.navigator(navigator: VisualNavigator, point: CGPoint) {}
-
-

r2-navigator/src/main/java/org/readium/r2/navigator/NavigatorFragmentFactory.kt

@@ -0,0 +1,30 @@
+/*
+ * Module: r2-navigator-kotlin
+ * Developers: Mickaël Menu
+ *
+ * Copyright (c) 2020. Readium Foundation. All rights reserved.
+ * Use of this source code is governed by a BSD-style license which is detailed in the
+ * LICENSE file present in the project repository where this source code is maintained.
+ */
+
+package org.readium.r2.navigator
+
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentFactory
+import org.readium.r2.navigator.pdf.PdfNavigatorFragment
+import org.readium.r2.shared.publication.Locator
+import org.readium.r2.shared.publication.Publication
+
+class NavigatorFragmentFactory(
+    private val publication: Publication,
+    private val initialLocator: Locator? = null,
+    private val listener: Navigator.Listener? = null
+) : FragmentFactory() {
+
+    override fun instantiate(classLoader: ClassLoader, className: String): Fragment =
+        when (className) {
+            PdfNavigatorFragment::class.java.name -> PdfNavigatorFragment(publication, initialLocator, listener)
+            else -> super.instantiate(classLoader, className)
+        }
+
+}

r2-navigator/src/main/java/org/readium/r2/navigator/audiobook/R2AudiobookActivity.kt

@@ -10,11 +10,16 @@ import android.widget.SeekBar
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import kotlinx.android.synthetic.main.activity_r2_audiobook.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import org.readium.r2.navigator.*
-import org.readium.r2.navigator.BuildConfig.*
+import org.readium.r2.navigator.BuildConfig.DEBUG
+import org.readium.r2.navigator.IR2Activity
+import org.readium.r2.navigator.NavigatorDelegate
+import org.readium.r2.navigator.R
+import org.readium.r2.navigator.VisualNavigator
 import org.readium.r2.shared.extensions.destroyPublication
 import org.readium.r2.shared.extensions.getPublication
 import org.readium.r2.shared.publication.*
@@ -24,8 +29,11 @@ import kotlin.coroutines.CoroutineContext
 
 open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activity, MediaPlayerCallback, VisualNavigator {
 
-    override val currentLocation: Locator? get() =
-        publication.readingOrder[currentResource].let { resource ->
+    override val currentLocator: LiveData<Locator?> get() = _currentLocator
+    private val _currentLocator = MutableLiveData<Locator?>(null)
+
+    private fun notifyCurrentLocation() {
+        val locator = publication.readingOrder[currentResource].let { resource ->
             val progression = mediaPlayer
                 ?.let { it.currentPosition / it.duration }
                 ?: 0.0
@@ -44,6 +52,14 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
             )
         }
 
+        if (locator == currentLocator.value) {
+            return
+        }
+
+        _currentLocator.postValue(locator)
+        navigatorDelegate?.locationDidChange(navigator = this, locator = locator)
+    }
+
     override fun go(locator: Locator, animated: Boolean, completion: () -> Unit): Boolean {
         val resourceIndex = publication.readingOrder.indexOfFirstWithHref(locator.href)
             ?: return false
@@ -135,9 +151,9 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
 
             mediaPlayer?.goTo(currentResource)
 
-            currentLocation?.locations?.progression?.let { progression ->
+            currentLocator.value?.locations?.progression?.let { progression ->
                 mediaPlayer?.seekTo(progression)
-                seekLocation = currentLocation?.locations
+                seekLocation = currentLocator.value?.locations
                 isSeekNeeded = true
             }
 
@@ -270,12 +286,7 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
 
         seekBar!!.progress = startTime.toInt()
 
-        val resource = publication.readingOrder[currentResource]
-        val resourceHref = resource.href
-        val resourceType = resource.type ?: ""
-
-        navigatorDelegate?.locationDidChange(locator = Locator(resourceHref, resourceType, publication.metadata.title, Locator.Locations(progression = seekBar!!.progress.toDouble())))
-
+        notifyCurrentLocation()
     }
 
     private var seekLocation: Locator.Locations? = null
@@ -337,11 +348,7 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
                         TimeUnit.MILLISECONDS.toSeconds(startTime.toLong()) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(startTime.toLong())))
                 seekBar!!.progress = startTime.toInt()
 
-                val resource = publication.readingOrder[currentResource]
-                val resourceHref = resource.href
-                val resourceType = resource.type ?: ""
-
-                navigatorDelegate?.locationDidChange(locator = Locator(resourceHref, resourceType, publication.metadata.title, Locator.Locations(progression = seekBar!!.progress.toDouble())))
+                notifyCurrentLocation()
 
                 Handler().postDelayed(this, 100)
             }
@@ -375,9 +382,6 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
             if (data != null) {
                 val locator = data.getParcelableExtra("locator") as Locator
 
-                // Set the progression fetched
-                navigatorDelegate?.locationDidChange(locator = locator)
-
                 // href is the link to the page in the toc
                 var href = locator.href
 
@@ -403,6 +407,7 @@ open class R2AudiobookActivity : AppCompatActivity(), CoroutineScope, IR2Activit
 
                 chapterView!!.text = publication.readingOrder[currentResource].title
 
+                notifyCurrentLocation()
             }
         }