Better qr code resizing

OpenKeychain/src/main/AndroidManifest.xml

@@ -106,9 +106,9 @@
             android:name=".ui.EditKeyActivity"
             android:configChanges="orientation|screenSize|keyboardHidden|keyboard"
             android:label="@string/title_edit_key" />
+        <!-- NOTE: Dont use configChanges for QR Code view! We use a different layout for landscape -->
         <activity
             android:name=".ui.QrCodeViewActivity"
-            android:configChanges="orientation|screenSize|keyboardHidden|keyboard"
             android:label="@string/share_qr_code_dialog_title" />
         <activity
             android:name=".ui.ViewKeyActivity"

OpenKeychain/src/main/res/layout-land/qr_code_activity.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include
+        android:id="@+id/toolbar_include"
+        layout="@layout/toolbar_standalone" />
+
+    <LinearLayout
+        android:layout_below="@id/toolbar_include"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <android.support.v7.widget.CardView
+            android:id="@+id/qr_code_image_layout"
+            android:transitionName="qr_code"
+            android:layout_gravity="center_horizontal"
+            android:layout_margin="32dp"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:clickable="true"
+            android:foreground="?android:attr/selectableItemBackground"
+            app:cardBackgroundColor="@android:color/white"
+            app:cardUseCompatPadding="true"
+            app:cardCornerRadius="4dp">
+
+            <org.sufficientlysecure.keychain.ui.widget.AspectRatioImageView
+                android:id="@+id/qr_code_image"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                app:dominantMeasurement="height"
+                app:aspectRatioEnabled="true" />
+        </android.support.v7.widget.CardView>
+
+    </LinearLayout>
+</RelativeLayout>

OpenKeychain/src/main/res/layout/qr_code_activity.xml

@@ -12,11 +12,12 @@
         android:layout_below="@id/toolbar_include"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:orientation="vertical">
+        android:orientation="horizontal">
 
         <android.support.v7.widget.CardView
             android:id="@+id/qr_code_image_layout"
             android:transitionName="qr_code"
+            android:layout_gravity="center_vertical"
             android:layout_margin="32dp"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
@@ -30,6 +31,7 @@
                 android:id="@+id/qr_code_image"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
+                app:dominantMeasurement="width"
                 app:aspectRatioEnabled="true" />
         </android.support.v7.widget.CardView>
 

OpenKeychain/src/main/res/layout/view_key_activity.xml

@@ -134,6 +134,7 @@
             android:clickable="true"
             android:foreground="?android:attr/selectableItemBackground"
             card_view:cardBackgroundColor="@android:color/white"
+            card_view:cardElevation="2dp"
             card_view:cardUseCompatPadding="true"
             card_view:cardCornerRadius="4dp">
 

OpenKeychain/src/main/res/layout/view_key_adv_share_fragment.xml

@@ -68,11 +68,11 @@
             android:layout_height="1dip"
             android:background="?android:attr/listDivider" />
 
-
         <android.support.v7.widget.CardView
             android:id="@+id/view_key_qr_code_layout"
             android:transitionName="qr_code"
             android:visibility="visible"
+            android:layout_marginTop="16dp"
             android:layout_width="200dp"
             android:layout_height="200dp"
             android:layout_gravity="center_horizontal"
@@ -81,6 +81,7 @@
             android:foreground="?android:attr/selectableItemBackground"
             card_view:cardBackgroundColor="@android:color/white"
             card_view:cardUseCompatPadding="true"
+            card_view:cardElevation="2dp"
             card_view:cardCornerRadius="4dp">
 
             <ImageView
@@ -93,7 +94,7 @@
             style="@style/SectionHeader"
             android:layout_width="wrap_content"
             android:layout_height="0dp"
-            android:layout_marginTop="14dp"
+            android:layout_marginTop="16dp"
             android:text="@string/section_share_key"
             android:layout_weight="1" />
 

OpenKeychain/src/main/res/layout/view_key_fragment.xml

@@ -18,7 +18,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             card_view:cardBackgroundColor="@android:color/white"
-            card_view:cardElevation="2sp"
+            card_view:cardElevation="2dp"
             card_view:cardUseCompatPadding="true"
             card_view:cardCornerRadius="4dp">