Closes #257.

app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt

@@ -1,5 +1,6 @@
 package apps.amine.bou.readerforselfoss
 
+import android.content.SharedPreferences
 import android.graphics.drawable.ColorDrawable
 import android.os.Build
 import android.os.Bundle
@@ -13,6 +14,7 @@ import android.view.Menu
 import android.view.MenuItem
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.fragment.app.Fragment
 import androidx.room.Room
 import apps.amine.bou.readerforselfoss.api.selfoss.Item
 import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
@@ -51,6 +53,11 @@ class ReaderActivity : AppCompatActivity() {
     private lateinit var toolbarMenu: Menu
 
     private lateinit var db: AppDatabase
+    private lateinit var prefs: SharedPreferences
+
+    private var activeAlignment: Int = 1
+    val JUSTIFY = 1
+    val ALIGN_LEFT = 2
 
     private fun showMenuItem(willAddToFavorite: Boolean) {
         toolbarMenu.findItem(R.id.save).isVisible = willAddToFavorite
@@ -65,6 +72,8 @@ class ReaderActivity : AppCompatActivity() {
         showMenuItem(false)
     }
 
+    private lateinit var editor: SharedPreferences.Editor
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -85,11 +94,13 @@ class ReaderActivity : AppCompatActivity() {
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         supportActionBar?.setDisplayShowHomeEnabled(true)
 
-        val prefs = PreferenceManager.getDefaultSharedPreferences(this)
+        prefs = PreferenceManager.getDefaultSharedPreferences(this)
+        editor = prefs.edit()
 
         debugReadingItems = prefs.getBoolean("read_debug", false)
         userIdentifier = prefs.getString("unique_id", "")
         markOnScroll = prefs.getBoolean("mark_on_scroll", false)
+        activeAlignment = prefs.getInt("text_align", JUSTIFY)
 
         api = SelfossApi(
             this,
@@ -223,6 +234,11 @@ class ReaderActivity : AppCompatActivity() {
         }
     }
 
+    fun alignmentMenu(showJustify: Boolean) {
+        toolbarMenu.findItem(R.id.align_left).isVisible = !showJustify
+        toolbarMenu.findItem(R.id.align_justify).isVisible = showJustify
+    }
+
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         val inflater = menuInflater
         inflater.inflate(R.menu.reader_menu, menu)
@@ -233,6 +249,11 @@ class ReaderActivity : AppCompatActivity() {
         } else {
             canFavorite()
         }
+        if (activeAlignment == JUSTIFY) {
+            alignmentMenu(false)
+        } else {
+            alignmentMenu(true)
+        }
 
         return true
     }
@@ -314,10 +335,29 @@ class ReaderActivity : AppCompatActivity() {
                     }
                 }
             }
+            R.id.align_left -> {
+                editor.putInt("text_align", ALIGN_LEFT)
+                editor.apply()
+                alignmentMenu(true)
+                refreshFragment()
+            }
+            R.id.align_justify -> {
+                editor.putInt("text_align", JUSTIFY)
+                editor.apply()
+                alignmentMenu(false)
+                refreshFragment()
+            }
         }
         return super.onOptionsItemSelected(item)
     }
 
+    private fun refreshFragment() {
+        finish()
+        overridePendingTransition(0, 0)
+        startActivity(intent)
+        overridePendingTransition(0, 0)
+    }
+
     companion object {
         var allItems: ArrayList<Item> = ArrayList()
     }

app/src/main/java/apps/amine/bou/readerforselfoss/fragments/ArticleFragment.kt

@@ -67,6 +67,7 @@ class ArticleFragment : Fragment() {
     private lateinit var fab: FloatingActionButton
     private lateinit var appColors: AppColors
     private lateinit var db: AppDatabase
+    private lateinit var textAlignment: String
 
     override fun onStop() {
         super.onStop()
@@ -91,6 +92,7 @@ class ArticleFragment : Fragment() {
 
     private var rootView: ViewGroup? = null
 
+    private lateinit var prefs: SharedPreferences
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -107,9 +109,10 @@ class ArticleFragment : Fragment() {
             contentImage = allItems[pageNumber.toInt()].getThumbnail(activity!!)
             contentSource = allItems[pageNumber.toInt()].sourceAndDateText()
 
-            val prefs = PreferenceManager.getDefaultSharedPreferences(activity)
+            prefs = PreferenceManager.getDefaultSharedPreferences(activity)
             editor = prefs.edit()
             fontSize = prefs.getString("reader_font_size", "16").toInt()
+            refreshAlignment()
 
             val settings = activity!!.getSharedPreferences(Config.settingsName, Context.MODE_PRIVATE)
             val debugReadingItems = prefs.getBoolean("read_debug", false)
@@ -204,7 +207,7 @@ class ArticleFragment : Fragment() {
             } else {
                 rootView!!.titleView.text = contentTitle
 
-                htmlToWebview(contentText, prefs)
+                htmlToWebview()
 
                 if (!contentImage.isEmptyOrNullOrNullString() && context != null) {
                     rootView!!.imageView.visibility = View.VISIBLE
@@ -248,6 +251,14 @@ class ArticleFragment : Fragment() {
         return rootView
     }
 
+    private fun refreshAlignment() {
+        textAlignment = when (prefs.getInt("text_align", 1)) {
+            1 -> "justify"
+            2 -> "left"
+            else -> "justify"
+        }
+    }
+
     private fun getContentFromMercury(
         customTabsIntent: CustomTabsIntent,
         prefs: SharedPreferences
@@ -283,7 +294,8 @@ class ArticleFragment : Fragment() {
                                 }
 
                                 try {
-                                    htmlToWebview(response.body()!!.content.orEmpty(), prefs)
+                                    contentText = response.body()!!.content.orEmpty()
+                                    htmlToWebview()
                                 } catch (e: Exception) {
                                     if (context != null) {
                                         ACRA.getErrorReporter().maybeHandleSilentException(e, context!!)
@@ -346,7 +358,7 @@ class ArticleFragment : Fragment() {
         }
     }
 
-    private fun htmlToWebview(c: String, prefs: SharedPreferences) {
+    private fun htmlToWebview() {
         val stringColor = String.format("#%06X", 0xFFFFFF and appColors.colorAccent)
 
         rootView!!.webcontent.visibility = View.VISIBLE
@@ -428,12 +440,12 @@ class ArticleFragment : Fragment() {
                 |      }
                 |      * {
                 |        font-size: ${fontSize}px;
-                |        text-align: justify;
+                |        text-align: $textAlignment;
                 |        word-break: break-word;
                 |        overflow:hidden;
                 |      }
                 |      a, pre, code {
-                |        text-align: left;
+                |        text-align: $textAlignment;
                 |      }
                 |      pre, code {
                 |        white-space: pre-wrap;
@@ -443,7 +455,7 @@ class ArticleFragment : Fragment() {
                 |   </style>
                 |</head>
                 |<body>
-                |   $c
+                |   $contentText
                 |</body>""".trimMargin(),
             "text/html",
             "utf-8",

app/src/main/res/drawable-anydpi/ic_format_align_justify.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3,21h18v-2L3,19v2zM3,17h18v-2L3,15v2zM3,13h18v-2L3,11v2zM3,9h18L21,7L3,7v2zM3,3v2h18L21,3L3,3z"/>
+</vector>

app/src/main/res/drawable-anydpi/ic_format_align_left.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M15,15L3,15v2h12v-2zM15,7L3,7v2h12L15,7zM3,13h18v-2L3,11v2zM3,21h18v-2L3,19v2zM3,3v2h18L21,3L3,3z"/>
+</vector>

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

@@ -2,6 +2,18 @@
 <menu xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <item android:id="@+id/align_left"
+        android:icon="@drawable/ic_format_align_left"
+        android:visible="true"
+        app:showAsAction="ifRoom"
+        android:title="@string/reader_text_align_left" />
+
+    <item android:id="@+id/align_justify"
+        android:icon="@drawable/ic_format_align_justify"
+        android:visible="true"
+        app:showAsAction="ifRoom"
+        android:title="@string/reader_text_align_justify" />
+
     <item
         android:id="@+id/unsave"
         android:icon="@drawable/heart_on"

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

@@ -170,4 +170,6 @@
     <string name="pref_header_experimental">Experimental</string>
     <string name="webview_dialog_issue_message">Webview not available. Disabling the article viewer to avoid any future crashes. Will load articles inside of your browser from now on.</string>
     <string name="webview_dialog_issue_title">Webview issue</string>
+    <string name="reader_text_align_left">Align left</string>
+    <string name="reader_text_align_justify">Justify</string>
 </resources>