improved display scaling of product dialog

Author: ajungg

ui/src/main/java/io/snabble/sdk/ui/scanner/ProductConfirmationDialog.java

@@ -10,6 +10,7 @@
 import android.text.Editable;
 import android.text.InputFilter;
 import android.text.TextWatcher;
+import android.util.DisplayMetrics;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.View;
@@ -257,8 +258,14 @@ public void run() {
             });
         }
 
-        float density = context.getResources().getDisplayMetrics().density;
-        window.setLayout(Math.round(320 * density), ViewGroup.LayoutParams.WRAP_CONTENT);
+        DisplayMetrics dm = context.getResources().getDisplayMetrics();
+        int availableWidth = Math.round(dm.widthPixels / dm.density);
+        int width = Math.round(320 * dm.density);
+        if(availableWidth >= 336) {
+            width = Math.round(336 * dm.density);
+        }
+
+        window.setLayout(width, ViewGroup.LayoutParams.WRAP_CONTENT);
     }
 
     private void updatePrice() {

ui/src/main/res/layout/dialog_product_confirmation.xml

@@ -2,7 +2,7 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="304dp"
+    android:layout_width="288dp"
     android:layout_height="wrap_content"
     android:layout_gravity="center"
     android:focusable="true"
@@ -118,8 +118,10 @@
     <android.support.v7.widget.AppCompatButton
         android:id="@+id/addToCart"
         style="@style/SnabbleButton"
-        android:layout_width="272dp"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="16dp"
+        android:layout_marginRight="16dp"
         android:layout_below="@+id/quantity"
         android:layout_centerHorizontal="true"
         android:text="@string/Snabble.Scanner.addToCart" />