Option to add padding to canvas

app-android/res/layout/activity_canvas.xml

@@ -1,7 +1,9 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/relative_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="@color/Black"
     tools:context=".CanvasActivity" >
 
     <LinearLayout

app-android/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="White">#FFFFFF</color>
+    <color name="Black">#000000</color>
+    
+</resources>

app-android/res/xml/layout_preferences.xml

@@ -3,5 +3,6 @@
     <CheckBoxPreference
         android:key="darkcanvas_preference"
         android:title="@string/dark_theme_preference" />
+    <EditTextPreference android:title="Padding" android:defaultValue="0" android:key="canvaspadding_preference" android:inputType = "number"/>
     
 </PreferenceScreen>

app-android/res/xml/network_preferences.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
-    <EditTextPreference android:title="@string/preferences_host_title" android:key="host_preference" android:defaultValue="please-replace.invalid" android:singleLine="true"/>
+    <EditTextPreference android:title="@string/preferences_host_title" android:key="host_preference" android:defaultValue="0.0.0.0" android:singleLine="true"/>
 </PreferenceScreen>

app-android/src/at/bitfire/gfxtablet/CanvasActivity.java

@@ -3,18 +3,20 @@ package at.bitfire.gfxtablet;
 import android.app.Activity;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.net.Uri;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.ViewConfiguration;
 import android.view.Window;
 import android.view.WindowManager;
 import android.widget.LinearLayout;
+import android.widget.RelativeLayout;
 import android.widget.Toast;
-
+public class CanvasActivity extends Activity implements OnSharedPreferenceChangeListener {
-public class CanvasActivity extends Activity {
 	CanvasView canvas;
 	SharedPreferences settings;
 	NetworkClient netClient;
@@ -27,6 +29,7 @@ public class CanvasActivity extends Activity {
 		PreferenceManager.setDefaultValues(this, R.xml.drawing_preferences, false);
 		
 		settings = PreferenceManager.getDefaultSharedPreferences(this);
+		settings.registerOnSharedPreferenceChangeListener(this);
 		if (settings.getBoolean(SettingsActivity.KEY_PREF_FULLSCREEN, false)) {
 			if (ViewConfiguration.get(this).hasPermanentMenuKey())
 				requestWindowFeature(Window.FEATURE_NO_TITLE);
@@ -44,6 +47,21 @@ public class CanvasActivity extends Activity {
 
 		canvas = new CanvasView(this, netClient);
 		layout.addView(canvas);
+		this.reconfigureLayout();
+	}
+
+	@Override
+	public void onSharedPreferenceChanged(SharedPreferences pref, String key) {
+		if (key.equals(SettingsActivity.KEY_PREF_PADDING))
+			this.reconfigureLayout();
+	}
+	
+	void reconfigureLayout()
+	{
+		String padding = settings.getString(SettingsActivity.KEY_PREF_PADDING, "0");
+		int p = Integer.parseInt(padding);
+		RelativeLayout l = (RelativeLayout)findViewById(R.id.relative_layout);
+		l.setPadding(p, p, p, p);
 	}
 	
 	@Override

app-android/src/at/bitfire/gfxtablet/CanvasView.java

@@ -24,7 +24,6 @@ public class CanvasView extends View implements OnSharedPreferenceChangeListener
 		
 		// disable until networking has been configured
 		setEnabled(false);
-		setBackgroundColor(0xFFD0D0D0);
 		
 		settings = PreferenceManager.getDefaultSharedPreferences(context);
 		settings.registerOnSharedPreferenceChangeListener(this);
@@ -49,7 +48,7 @@ public class CanvasView extends View implements OnSharedPreferenceChangeListener
 	void reconfigureLayout()
 	{
 		if (settings.getBoolean(SettingsActivity.KEY_PREF_DARKCANVAS, false))
-			setBackgroundColor(0x2E2E2E);
+			setBackgroundColor(0xFF2E2E2E);
 		else
 			setBackgroundColor(0xFFD0D0D0);	
 	}

app-android/src/at/bitfire/gfxtablet/SettingsActivity.java

@@ -19,7 +19,8 @@ public class SettingsActivity extends PreferenceActivity implements OnSharedPref
 		KEY_PREF_HOST = "host_preference",
 		KEY_PREF_STYLUS_ONLY = "stylus_only_preference",
 		KEY_PREF_FULLSCREEN = "fullscreen_preference",
-		KEY_PREF_DARKCANVAS = "darkcanvas_preference";
+		KEY_PREF_DARKCANVAS = "darkcanvas_preference",
+		KEY_PREF_PADDING = "canvaspadding_preference";
     
 
     @Override