add thumbnail: save scaled-down image when closing board, store it in

summaries db, and display as part of game list item.  Preference
governs whether saved/displayed and the scale.

xwords4/android/XWords4/res/layout/game_list_item.xml

@@ -38,6 +38,15 @@
                    android:paddingRight="8dip"
                    />
 
+        <ImageView android:id="@+id/thumbnail"
+                   android:layout_width="wrap_content"
+                   android:layout_height="wrap_content"
+                   android:layout_gravity="center_vertical|center_horizontal"
+                   android:paddingRight="2dip"
+                   android:paddingTop="2dip"
+                   android:paddingBottom="2dip"
+                   />
+
         <!-- this layout is vertical, holds everything but the status
              icon[s] (plural later) -->
         <LinearLayout android:orientation="vertical"

xwords4/android/XWords4/res/values/common_rsrc.xml

@@ -57,6 +57,7 @@
   <string name="key_notify_vibrate">key_notify_vibrate</string>
   <string name="key_enable_sms">key_enable_sms</string>
   <string name="key_keep_screenon">key_keep_screenon</string>
+  <string name="key_thumbsize">key_thumbsize</string>
   <string name="key_summary_field">key_summary_field</string>
   <string name="key_default_loc">key_default_loc</string>
 
@@ -135,6 +136,12 @@
   <string name="gamel_menu_storedb">Write DB to SD card</string>
   <string name="gamel_menu_loaddb">Load DB from SD card</string>
 
+  <string name="game_thumb_off">Off</string>
+  <string name="game_thumb_third">1/3</string>
+  <string name="game_thumb_quarter">1/4</string>
+  <string name="game_thumb_fifth">1/5</string>
+  <string name="game_thumb_sixth">1/6</string>
+
   <!--string name="dict_url">http://10.0.2.2/~eehouse/and_dicts</string-->
 
   <string-array name="board_sizes">
@@ -281,4 +288,12 @@
     <item>@string/confirm_sms_willpay</item>
   </string-array>
 
+  <string-array name="game_thumb_values">
+    <item>@string/game_thumb_off</item>
+    <item>@string/game_thumb_third</item>
+    <item>@string/game_thumb_quarter</item>
+    <item>@string/game_thumb_fifth</item>
+    <item>@string/game_thumb_sixth</item>
+  </string-array>
+
 </resources>

xwords4/android/XWords4/res/values/strings.xml

@@ -2173,4 +2173,6 @@
 
     <string name="sel_gamesf">Games: %d"</string>
     <string name="sel_groupsf">Groups: %d"</string>
+
+    <string name="summary_thumbsize">Thumbnail size</string>
 </resources>

xwords4/android/XWords4/res/xml/xwprefs.xml

@@ -138,6 +138,14 @@
                         android:defaultValue="false"
                         />
 
+    <org.eehouse.android.xw4.XWListPreference 
+        android:key="@string/key_thumbsize"
+        android:title="@string/summary_thumbsize"
+        android:entries="@array/game_thumb_values"
+        android:entryValues="@array/game_thumb_values"
+        android:defaultValue="@string/game_thumb_off"
+       />
+
     <PreferenceScreen android:title="@string/prefs_colors"
                       android:summary="@string/prefs_colors_summary"
                       >

xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardActivity.java

@@ -21,34 +21,39 @@
 package org.eehouse.android.xw4;
 
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.ProgressDialog;
+
+import android.content.DialogInterface.OnDismissListener;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.content.res.Configuration;
+
+import android.graphics.Bitmap;
+
 import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.View;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.MenuInflater;
-import android.view.KeyEvent;
-import android.view.Window;
 import android.os.Handler;
 import android.os.Message;
-import android.content.Intent;
+
-import java.util.concurrent.Semaphore;
+import android.text.TextUtils;
-import java.util.ArrayList;
+import android.view.KeyEvent;
-import java.util.Iterator;
+import android.view.Menu;
-import android.app.Dialog;
+import android.view.MenuInflater;
-import android.app.AlertDialog;
+import android.view.MenuItem;
-import android.app.ProgressDialog;
+import android.view.View;
-import android.content.DialogInterface;
+import android.view.Window;
-import android.content.DialogInterface.OnDismissListener;
 import android.widget.Button;
+import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
-import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.concurrent.Semaphore;
 import junit.framework.Assert;
-import android.content.res.Configuration;
-import android.content.pm.ActivityInfo;
 
 import org.eehouse.android.xw4.jni.*;
 import org.eehouse.android.xw4.jni.CommsAddrRec.CommsConnType;
@@ -2028,7 +2033,8 @@ public class BoardActivity extends XWActivity
             interruptBlockingThread();
 
             if ( null != m_jniThread ) {
-                m_jniThread.waitToStop( save );
+                Bitmap thumb = m_view.getScaledBoard();
+                m_jniThread.waitToStop( save, thumb );
                 m_jniThread = null;
             }
 

xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardView.java

@@ -937,6 +937,19 @@ public class BoardView extends View implements DrawCtx, BoardHandler,
         }
     }
 
+    public Bitmap getScaledBoard()
+    {
+        Bitmap result = null;
+        int divisor = XWPrefs.getThumbScale( m_context );
+        if ( 0 < divisor ) {
+            result = Bitmap.createScaledBitmap( s_bitmap, 
+                                                m_layoutWidth / divisor,
+                                                m_layoutHeight / divisor,
+                                                false );
+        }
+        return result;
+    }
+
     private void drawTileImpl( Rect rect, String text, int val, 
                                int flags, boolean clearBack )
     {

xwords4/android/XWords4/src/org/eehouse/android/xw4/DBUtils.java

@@ -25,15 +25,21 @@ import android.content.Context;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
+import android.graphics.Bitmap.CompressFormat;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.os.Environment;
 import android.text.TextUtils;
+
+import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.nio.channels.FileChannel;
+
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
@@ -41,7 +47,6 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;
 import java.util.StringTokenizer;
-
 import junit.framework.Assert;
 
 import org.eehouse.android.xw4.jni.*;
@@ -132,7 +137,7 @@ public class DBUtils {
                                  DBHelper.DICTLANG, DBHelper.GAMEID,
                                  DBHelper.SCORES, DBHelper.HASMSGS,
                                  DBHelper.LASTPLAY_TIME, DBHelper.REMOTEDEVS,
-                                 DBHelper.LASTMOVE
+                                 DBHelper.LASTMOVE, DBHelper.THUMBNAIL
             };
             String selection = String.format( ROW_ID_FMT, lock.getRowid() );
 
@@ -179,6 +184,14 @@ public class DBUtils {
                 summary.lastMoveTime = 
                     cursor.getInt(cursor.getColumnIndex(DBHelper.LASTMOVE));
 
+                byte[] data =
+                    cursor.getBlob( cursor.getColumnIndex(DBHelper.THUMBNAIL));
+                if ( null != data ) {
+                    Bitmap thumb = BitmapFactory.decodeByteArray( data, 0, 
+                                                                  data.length );
+                    summary.setThumbnail( thumb );
+                }
+
                 String scoresStr = 
                     cursor.getString( cursor.getColumnIndex(DBHelper.SCORES));
                 int[] scores = new int[summary.nPlayers];
@@ -308,6 +321,17 @@ public class DBUtils {
                         break;
                     }
                 }
+
+                Bitmap thumb = summary.getThumbnail();
+                if ( null == thumb ) {
+                    values.putNull( DBHelper.THUMBNAIL );
+                } else {
+                    ByteArrayOutputStream bas = new ByteArrayOutputStream();
+                    thumb.compress( CompressFormat.PNG, 0 , bas );
+                    byte[] data = bas.toByteArray();
+                    values.put( DBHelper.THUMBNAIL, data );
+                }
+
                 values.put( DBHelper.SERVERROLE, summary.serverRole.ordinal() );
 
                 long result = db.update( DBHelper.TABLE_NAME_SUM,

xwords4/android/XWords4/src/org/eehouse/android/xw4/GameListItem.java

@@ -21,6 +21,7 @@
 package org.eehouse.android.xw4;
 
 import android.content.Context;
+import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.drawable.Drawable;
@@ -51,6 +52,7 @@ public class GameListItem extends LinearLayout
     private boolean m_loaded;
     private long m_rowid;
     private View m_hideable;
+    private ImageView m_thumb;
     private ExpiringTextView m_name;
     private boolean m_expanded, m_haveTurn, m_haveTurnLocal;
     private long m_lastMoveTime;
@@ -185,6 +187,7 @@ public class GameListItem extends LinearLayout
                                          R.drawable.expander_ic_maximized :
                                          R.drawable.expander_ic_minimized);
         m_hideable.setVisibility( m_expanded? View.VISIBLE : View.GONE );
+        m_thumb.setVisibility( m_expanded? View.VISIBLE : View.GONE );
 
         m_name.setBackgroundColor( android.R.color.transparent );
         m_name.setPct( m_handler, m_haveTurn && !m_expanded, 
@@ -292,6 +295,14 @@ public class GameListItem extends LinearLayout
                     }
                 } );
 
+            m_thumb = (ImageView)findViewById( R.id.thumbnail );
+            Bitmap bmp = summary.getThumbnail();
+            if ( null == bmp ) {
+                m_thumb.setVisibility( View.GONE );
+            } else {
+                m_thumb.setImageBitmap( bmp );
+            }
+
             tview = (TextView)findViewById( R.id.role );
             String roleSummary = summary.summarizeRole();
             if ( null != roleSummary ) {

xwords4/android/XWords4/src/org/eehouse/android/xw4/XWPrefs.java

@@ -328,6 +328,24 @@ public class XWPrefs {
         return posns;
     }
 
+    public static int getThumbScale( Context context )
+    {
+        String scale = getPrefsString( context, R.string.key_thumbsize );
+        int result = -1;
+        if ( context.getString(R.string.game_thumb_off).equals(scale) ) {
+            result = 0;
+        } else if ( context.getString(R.string.game_thumb_third).equals(scale) ) {
+            result = 3;
+        } else if ( context.getString(R.string.game_thumb_quarter).equals(scale) ) {
+            result = 4;
+        } else if ( context.getString(R.string.game_thumb_fifth).equals(scale) ) {
+            result = 5;
+        } else if ( context.getString(R.string.game_thumb_sixth).equals(scale) ) {
+            result = 6;
+        }
+        return result;
+    }
+
     protected static String getPrefsString( Context context, int keyID )
     {
         String key = context.getString( keyID );

xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/GameSummary.java

@@ -21,11 +21,14 @@
 package org.eehouse.android.xw4.jni;
 
 import android.content.Context;
+import android.graphics.Bitmap;
 import android.text.TextUtils;
+
 import junit.framework.Assert;
+
+import org.eehouse.android.xw4.DbgUtils;
 import org.eehouse.android.xw4.R;
 import org.eehouse.android.xw4.Utils;
-import org.eehouse.android.xw4.DbgUtils;
 import org.eehouse.android.xw4.jni.CommsAddrRec.CommsConnType;
 import org.eehouse.android.xw4.jni.CurGameInfo.DeviceRole;
 
@@ -66,6 +69,7 @@ public class GameSummary {
     private CurGameInfo m_gi;
     private Context m_context;
     private String[] m_remotePhones;
+    private Bitmap m_thumb;
 
     private GameSummary() {}
 
@@ -85,6 +89,16 @@ public class GameSummary {
         m_gi = gi;
     }
 
+    public void setThumbnail( Bitmap thumb )
+    {
+        m_thumb = thumb;
+    }
+
+    public Bitmap getThumbnail()
+    {
+        return m_thumb;
+    }
+
     public boolean inNetworkGame()
     {
         return null != relayID;

xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/JNIThread.java

@@ -22,6 +22,7 @@
 package org.eehouse.android.xw4.jni;
 
 import android.content.Context;
+import android.graphics.Bitmap;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.os.Handler;
@@ -132,6 +133,7 @@ public class JNIThread extends Thread {
     private static final int kMinDivWidth = 10;
     private int m_connsIconID = 0;
     private String m_newDict = null;
+    private Bitmap m_thumbnail;
 
     LinkedBlockingQueue<QueueElem> m_queue;
 
@@ -160,11 +162,12 @@ public class JNIThread extends Thread {
         m_queue = new LinkedBlockingQueue<QueueElem>();
     }
 
-    public void waitToStop( boolean save )
+    public void waitToStop( boolean save, Bitmap thumb )
     {
         synchronized ( this ) {
             m_stopped = true;
             m_saveOnStop = save;
+            m_thumbnail = thumb;
         }
         handle( JNICmd.CMD_NONE );     // tickle it
         try {
@@ -298,6 +301,7 @@ public class JNIThread extends Thread {
             // DbgUtils.logf( "no change in game; can skip saving" );
         } else {
             GameSummary summary = new GameSummary( m_context, m_gi );
+            summary.setThumbnail( m_thumbnail );
             XwJNI.game_summarize( m_jniGamePtr, summary );
             DBUtils.saveGame( m_context, m_lock, state, false );
             DBUtils.saveSummary( m_context, m_lock, summary );