added auto refresh and removed unused stuff

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

@@ -2,20 +2,14 @@ package at.bitfire.gfxtablet;
 
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.database.Cursor;
-import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
-import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
-import android.preference.PreferenceFragment;
+import android.os.Handler;
 import android.preference.PreferenceManager;
-import android.provider.MediaStore;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.PopupMenu;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -23,16 +17,17 @@ import android.view.View;
 import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.Toast;
+
 import at.bitfire.gfxtablet.NetEvent.Type;
 
 public class CanvasActivity extends AppCompatActivity implements View.OnSystemUiVisibilityChangeListener, SharedPreferences.OnSharedPreferenceChangeListener {
-    private static final int RESULT_LOAD_IMAGE = 1;
     private static final String TAG = "GfxTablet.Canvas";
+    public static String SCREEN_PATH;
     private static CanvasActivity instance;
+    private Handler autoRefreshHandler;
+    private Runnable autoRefreshBackground;
     public static CanvasActivity get() { return instance; }
 
-    final Uri homepageUri = Uri.parse(("https://gfxtablet.bitfire.at"));
-
     NetworkClient netClient;
     NetworkServer netServer;
 
@@ -44,6 +39,8 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         instance = this;
+        autoRefreshHandler = new Handler();
+        SCREEN_PATH = CanvasActivity.get().getCacheDir() + "/screen.png";
 
         preferences = PreferenceManager.getDefaultSharedPreferences(this);
         preferences.registerOnSharedPreferenceChangeListener(this);
@@ -64,6 +61,20 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
         canvas.setNetworkClient(netClient);
     }
 
+    private void startAutoRefresh() {
+        autoRefreshHandler.postDelayed(new Runnable() {
+            public void run() {
+                refreshBackground();
+                autoRefreshBackground=this;
+                autoRefreshHandler.postDelayed(autoRefreshBackground, 5000);
+            }
+        }, 5000);
+    }
+
+    private void stopAutoRefresh() {
+        autoRefreshHandler.removeCallbacks(autoRefreshBackground);
+    }
+
     @Override
     protected void onResume() {
         super.onResume();
@@ -73,12 +84,24 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
         else
             getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 
+        if (preferences.getBoolean(SettingsActivity.KEY_AUTO_REFRESH, true))
+            startAutoRefresh();
+        else
+            stopAutoRefresh();
+
         showTemplateImage();
     }
 
+    @Override
+    protected void onPause() {
+        super.onPause();
+        stopAutoRefresh();
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();
+        stopAutoRefresh();
         netClient.getQueue().add(new NetEvent(NetEvent.Type.TYPE_DISCONNECT));
     }
 
@@ -118,10 +141,14 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
     }
 
     // refresh methods
-    public void refreshBackground(MenuItem item) {
+    public void refreshBackground() {
         netClient.getQueue().add(new NetEvent(Type.TYPE_MOTION, (short) 0, (short) 0, (short) 0, -1, false));
     }
 
+    public void refreshBackground(MenuItem item) {
+        refreshBackground();
+    }
+
 
     // full-screen methods
     public void switchFullScreen(MenuItem item) {
@@ -160,17 +187,11 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
     public void showTemplateImage() {
         ImageView template = (ImageView)findViewById(R.id.canvas_template);
         template.setVisibility(View.VISIBLE);
-        String picturePath = preferences.getString(SettingsActivity.KEY_TEMPLATE_IMAGE, null);
-        if (picturePath != null) {
-            try {
-                Drawable d = Drawable.createFromPath(picturePath);
-                template.setImageDrawable(d);
-                //Bitmap bm = BitmapFactory.decodeFile(picturePath);
-                //template.setImageBitmap(bm);
-                Log.i("drawn", picturePath);
-            } catch (Exception e) {
-                Toast.makeText(this, e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
-            }
+        try {
+            Drawable d = Drawable.createFromPath(SCREEN_PATH);
+            template.setImageDrawable(d);
+        } catch (Exception e) {
+            Toast.makeText(this, e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
         }
     }
 

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

@@ -31,7 +31,6 @@ public class CanvasView extends View implements SharedPreferences.OnSharedPrefer
 
 
     // setup
-
     public CanvasView(Context context, AttributeSet attributeSet) {
         super(context, attributeSet);
 
@@ -40,7 +39,6 @@ public class CanvasView extends View implements SharedPreferences.OnSharedPrefer
 
         settings = PreferenceManager.getDefaultSharedPreferences(context);
         settings.registerOnSharedPreferenceChangeListener(this);
-        setBackground();
         setInputMethods();
 		inRangeStatus = InRangeStatus.OutOfRange;
     }
@@ -52,27 +50,14 @@ public class CanvasView extends View implements SharedPreferences.OnSharedPrefer
 
 
     // settings
-
-    protected void setBackground() {
-        if (settings.getBoolean(SettingsActivity.KEY_DARK_CANVAS, false))
-            setBackgroundColor(Color.BLACK);
-        //else
-            //setBackgroundResource(R.drawable.bg_grid_pattern); //<-- Add this as option?
-    }
-
     protected void setInputMethods() {
         acceptStylusOnly = settings.getBoolean(SettingsActivity.KEY_PREF_STYLUS_ONLY, false);
     }
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-        switch (key) {
-            case SettingsActivity.KEY_PREF_STYLUS_ONLY:
-                setInputMethods();
-                break;
-            case SettingsActivity.KEY_DARK_CANVAS:
-                setBackground();
-                break;
+        if (key.equals(SettingsActivity.KEY_PREF_STYLUS_ONLY)) {
+            setInputMethods();
         }
     }
 

app-android/app/src/main/java/at/bitfire/gfxtablet/NetworkServer.java

@@ -23,34 +23,34 @@ public class NetworkServer implements Runnable {
 	public void run() {
 		try {
 			DatagramSocket socket = new DatagramSocket(GFXTABLET_PORT);
+			int packets = 0;
 
 			SparseArray<byte[]> buffer = new SparseArray<>();
 			// Init has to be done twice because the first call will be set on the server with 0.0.0.0
 			// but we need the ip of the client.
 			CanvasActivity.get().sendMotionStopSignal();
 			CanvasActivity.get().sendMotionStopSignal();
+			CanvasActivity.get().refreshBackground();
 			while (true) {
 				byte[] buf = new byte[60030];
 				DatagramPacket packet = new DatagramPacket(buf, buf.length);
 				socket.receive(packet);
 				int n = buf[60029];
-				//Log.i("receive:", String.valueOf(n));
+				Log.i("receive:", String.valueOf(n));
 				if (n != 0){
 					buffer.put(n, buf);
 				} else if (buffer.size() > 0 ) {
 					try {
-						String path = CanvasActivity.get().getCacheDir() + "/dsektop.png";
-						Log.i("buffer:", String.valueOf(buf[0]));
+						String path = CanvasActivity.SCREEN_PATH;
 						boolean parts = buffer.size() == (int) buf[0];
 						for (int i=0; i < buf[0]; i++) {
 							if (parts) {
-								//Log.i("keyAt " + i, String.valueOf(buffer.keyAt(i)));
 								parts = buffer.keyAt(i) == i+1;
 							}
 						}
 						if (!parts) {
 							buffer.clear();
-							CanvasActivity.get().sendMotionStopSignal();
+							CanvasActivity.get().refreshBackground();
 							Log.i("Image Problem", "tying to refetch the screenshot");
 							continue;
 						}
@@ -62,13 +62,6 @@ public class NetworkServer implements Runnable {
                         }
 						fos.flush();
 						fos.close();
-						File file = new File(path);
-						long size = file.length();
-						//Log.i("file-path", path);
-						//Log.i("file-size", String.valueOf(size));
-						preferences.edit().remove(SettingsActivity.KEY_TEMPLATE_IMAGE).apply();
-						preferences.edit().putString(SettingsActivity.KEY_TEMPLATE_IMAGE, path).apply();
-						//Log.i("file-path-current", preferences.getString(SettingsActivity.KEY_TEMPLATE_IMAGE, null));
 						CanvasActivity.get().runOnUiThread(new Runnable() {
 							@Override
 							public void run() {

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

@@ -8,10 +8,9 @@ public class SettingsActivity extends AppCompatActivity {
     public static final String
 		KEY_PREF_HOST = "host_preference",
 		KEY_PREF_STYLUS_ONLY = "stylus_only_preference",
-        KEY_DARK_CANVAS = "dark_canvas_preference",
         KEY_KEEP_DISPLAY_ACTIVE = "keep_display_active_preference",
-        KEY_TEMPLATE_IMAGE = "key_template_image";
-    
+        KEY_AUTO_REFRESH = "auto_refresh_preference";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

app-android/app/src/main/res/drawable/bg_grid_pattern.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<bitmap
-    android:src="@drawable/bg_grid"
-    android:tileMode="repeat"
-    xmlns:android="http://schemas.android.com/apk/res/android"/>

app-android/app/src/main/res/layout/activity_canvas.xml

@@ -6,7 +6,7 @@
 
     <ImageView
         android:id="@+id/canvas_template"
-        android:src="@drawable/ic_action_picture"
+        android:src="@drawable/ic_renew"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:scaleType="fitXY"/>

app-android/app/src/main/res/menu/set_template_image.xml

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item
-        android:id="@+id/menu_clear_template_image"
-        android:onClick="clearTemplateImage"
-        android:title="@string/menu_clear_template_image"/>
-
-    <item
-        android:id="@+id/menu_select_template_image"
-        android:onClick="selectTemplateImage"
-        android:title="@string/menu_select_another_template_image"/>
-
-</menu>

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

@@ -1,15 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-
     <string name="app_name">GfxTablet</string>
     <string name="menu_settings">Settings</string>
-    <string name="menu_about">About / Help</string>
-    <string name="menu_donate">Donate</string>
 
     <string name="fullscreen">Full-screen mode</string>
-    <string name="menu_set_template_image">Set template image</string>
-    <string name="menu_clear_template_image">Clear template image</string>
-    <string name="menu_select_another_template_image">Select another image</string>
 
     <string name="no_host_defined">No valid recipient host defined. Please configure in \"Settings / Recipient host\".</string>
 
@@ -18,11 +12,9 @@
     <string name="preferences_stylus_only">Sense stylus only</string>
     <string name="preferences_stylus_only_on">Only stylus input will be processed</string>
     <string name="preferences_stylus_only_off">Finger and stylus input will be processed</string>
-    <string name="preferences_dark_canvas">Use dark canvas</string>
-    <string name="preferences_dark_canvas_on">Black canvas will be used (covers template image)</string>
-    <string name="preferences_dark_canvas_off">White/transparent gridded canvas will be used</string>
     <string name="preferences_keep_display_active">Keep display active</string>
     <string name="preferences_keep_display_active_on">Display won\'t turn off while GfxTablet is active</string>
     <string name="preferences_keep_display_active_off">Display will turn off according to system settings</string>
-
+    <string name="auto_reload_summary">It will refresh every 5 seconds.</string>
+    <string name="auto_reload_title">Auto refresh</string>
 </resources>

app-android/app/src/main/res/values/styles.xml

@@ -1,9 +1,6 @@
 <resources>
-
     <style name="BaseTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
     </style>
-
     <style name="AppTheme" parent="BaseTheme">
     </style>
-
 </resources>

app-android/app/src/main/res/xml/preferences.xml

@@ -16,20 +16,16 @@
             android:title="@string/preferences_keep_display_active"
             android:summaryOn="@string/preferences_keep_display_active_on"
             android:summaryOff="@string/preferences_keep_display_active_off" />
-
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="stylus_only_preference"
             android:title="@string/preferences_stylus_only"
             android:summaryOn="@string/preferences_stylus_only_on"
             android:summaryOff="@string/preferences_stylus_only_off" />
-
         <CheckBoxPreference
             android:defaultValue="false"
-            android:key="dark_canvas_preference"
-            android:title="@string/preferences_dark_canvas"
-            android:summaryOn="@string/preferences_dark_canvas_on"
-            android:summaryOff="@string/preferences_dark_canvas_off" />
-
+            android:key="auto_refresh_preference"
+            android:summary="@string/auto_reload_summary"
+            android:title="@string/auto_reload_title" />
     </PreferenceCategory>
 </PreferenceScreen>