juce/source/src/native/android/java/JuceAppActivity.java

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-10 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 package com.juce;
  27
  28 import android.app.Activity;
  29 import android.app.AlertDialog;
  30 import android.content.DialogInterface;
  31 import android.os.Bundle;
  32 import android.content.Context;
  33 import android.view.ViewGroup;
  34 import android.graphics.Paint;
  35 import android.graphics.Canvas;
  36 import android.graphics.Path;
  37 import android.graphics.Bitmap;
  38 import android.graphics.Matrix;
  39 import android.graphics.RectF;
  40 import android.graphics.Rect;
  41 import android.text.ClipboardManager;
  42 import com.juce.ComponentPeerView;
  43 import java.io.BufferedInputStream;
  44 import java.io.IOException;
  45 import java.io.InputStream;
  46 import java.io.OutputStream;
  47 import java.net.URL;
  48 import java.net.HttpURLConnection;
  49
  50 //==============================================================================
  51 public final class JuceAppActivity   extends Activity
  52 {
  53     //==============================================================================
  54     static
  55     {
  56         System.loadLibrary ("juce_jni");
  57     }
  58
  59     @Override
  60     public final void onCreate (Bundle savedInstanceState)
  61     {
  62         super.onCreate (savedInstanceState);
  63
  64         viewHolder = new ViewHolder (this);
  65         setContentView (viewHolder);
  66     }
  67
  68     @Override
  69     protected final void onDestroy()
  70     {
  71         quitApp();
  72         super.onDestroy();
  73     }
  74
  75     private void callAppLauncher()
  76     {
  77         launchApp (getApplicationInfo().publicSourceDir,
  78                    getApplicationInfo().dataDir);
  79     }
  80
  81     //==============================================================================
  82     public native void launchApp (String appFile, String appDataDir);
  83     public native void quitApp();
  84     public native void setScreenSize (int screenWidth, int screenHeight);
  85
  86     //==============================================================================
  87     public static final void printToConsole (String s)
  88     {
  89         android.util.Log.i ("Juce", s);
  90     }
  91
  92     //==============================================================================
  93     public native void deliverMessage (long value);
  94     private android.os.Handler messageHandler = new android.os.Handler();
  95
  96     public final void postMessage (long value)
  97     {
  98         messageHandler.post (new MessageCallback (value));
  99     }
 100
 101     final class MessageCallback  implements Runnable
 102     {
 103         public MessageCallback (long value_)
 104         {
 105             value = value_;
 106         }
 107
 108         public final void run()
 109         {
 110             deliverMessage (value);
 111         }
 112
 113         private long value;
 114     }
 115
 116     //==============================================================================
 117     private ViewHolder viewHolder;
 118
 119     public final ComponentPeerView createNewView (boolean opaque)
 120     {
 121         ComponentPeerView v = new ComponentPeerView (this, opaque);
 122         viewHolder.addView (v);
 123         return v;
 124     }
 125
 126     public final void deleteView (ComponentPeerView view)
 127     {
 128         viewHolder.removeView (view);
 129     }
 130
 131     final class ViewHolder  extends ViewGroup
 132     {
 133         public ViewHolder (Context context)
 134         {
 135             super (context);
 136             setDescendantFocusability (ViewGroup.FOCUS_AFTER_DESCENDANTS);
 137             setFocusable (false);
 138         }
 139
 140         protected final void onLayout (boolean changed, int left, int top, int right, int bottom)
 141         {
 142             setScreenSize (getWidth(), getHeight());
 143
 144             if (isFirstResize)
 145             {
 146                 isFirstResize = false;
 147                 callAppLauncher();
 148             }
 149         }
 150
 151         private boolean isFirstResize = true;
 152     }
 153
 154     public final void excludeClipRegion (android.graphics.Canvas canvas, float left, float top, float right, float bottom)
 155     {
 156         canvas.clipRect (left, top, right, bottom, android.graphics.Region.Op.DIFFERENCE);
 157     }
 158
 159     //==============================================================================
 160     public final String getClipboardContent()
 161     {
 162         ClipboardManager clipboard = (ClipboardManager) getSystemService (CLIPBOARD_SERVICE);
 163         return clipboard.getText().toString();
 164     }
 165
 166     public final void setClipboardContent (String newText)
 167     {
 168         ClipboardManager clipboard = (ClipboardManager) getSystemService (CLIPBOARD_SERVICE);
 169         clipboard.setText (newText);
 170     }
 171
 172     //==============================================================================
 173     public final void showMessageBox (String title, String message, final long callback)
 174     {
 175         AlertDialog.Builder builder = new AlertDialog.Builder (this);
 176         builder.setTitle (title)
 177                .setMessage (message)
 178                .setCancelable (true)
 179                .setPositiveButton ("OK", new DialogInterface.OnClickListener()
 180                     {
 181                         public void onClick (DialogInterface dialog, int id)
 182                         {
 183                             dialog.cancel();
 184                             JuceAppActivity.this.alertDismissed (callback, 0);
 185                         }
 186                     });
 187
 188         builder.create().show();
 189     }
 190
 191     public final void showOkCancelBox (String title, String message, final long callback)
 192     {
 193         AlertDialog.Builder builder = new AlertDialog.Builder (this);
 194         builder.setTitle (title)
 195                .setMessage (message)
 196                .setCancelable (true)
 197                .setPositiveButton ("OK", new DialogInterface.OnClickListener()
 198                     {
 199                         public void onClick (DialogInterface dialog, int id)
 200                         {
 201                             dialog.cancel();
 202                             JuceAppActivity.this.alertDismissed (callback, 1);
 203                         }
 204                     })
 205                .setNegativeButton ("Cancel", new DialogInterface.OnClickListener()
 206                     {
 207                         public void onClick (DialogInterface dialog, int id)
 208                         {
 209                             dialog.cancel();
 210                             JuceAppActivity.this.alertDismissed (callback, 0);
 211                         }
 212                     });
 213
 214         builder.create().show();
 215     }
 216
 217     public final void showYesNoCancelBox (String title, String message, final long callback)
 218     {
 219         AlertDialog.Builder builder = new AlertDialog.Builder (this);
 220         builder.setTitle (title)
 221                .setMessage (message)
 222                .setCancelable (true)
 223                .setPositiveButton ("Yes", new DialogInterface.OnClickListener()
 224                     {
 225                         public void onClick (DialogInterface dialog, int id)
 226                         {
 227                             dialog.cancel();
 228                             JuceAppActivity.this.alertDismissed (callback, 1);
 229                         }
 230                     })
 231                .setNegativeButton ("No", new DialogInterface.OnClickListener()
 232                     {
 233                         public void onClick (DialogInterface dialog, int id)
 234                         {
 235                             dialog.cancel();
 236                             JuceAppActivity.this.alertDismissed (callback, 2);
 237                         }
 238                     })
 239                .setNeutralButton ("Cancel", new DialogInterface.OnClickListener()
 240                     {
 241                         public void onClick (DialogInterface dialog, int id)
 242                         {
 243                             dialog.cancel();
 244                             JuceAppActivity.this.alertDismissed (callback, 0);
 245                         }
 246                     });
 247
 248         builder.create().show();
 249     }
 250
 251     public native void alertDismissed (long callback, int id);
 252
 253     //==============================================================================
 254     public final int[] renderGlyph (char glyph, Paint paint, Matrix matrix, Rect bounds)
 255     {
 256         Path p = new Path();
 257         paint.getTextPath (String.valueOf (glyph), 0, 1, 0.0f, 0.0f, p);
 258
 259         RectF boundsF = new RectF();
 260         p.computeBounds (boundsF, true);
 261         matrix.mapRect (boundsF);
 262
 263         boundsF.roundOut (bounds);
 264         bounds.left--;
 265         bounds.right++;
 266
 267         final int w = bounds.width();
 268         final int h = bounds.height();
 269
 270         Bitmap bm = Bitmap.createBitmap (w, h, Bitmap.Config.ARGB_8888);
 271
 272         Canvas c = new Canvas (bm);
 273         matrix.postTranslate (-bounds.left, -bounds.top);
 274         c.setMatrix (matrix);
 275         c.drawPath (p, paint);
 276
 277         int sizeNeeded = w * h;
 278         if (cachedRenderArray.length < sizeNeeded)
 279             cachedRenderArray = new int [sizeNeeded];
 280
 281         bm.getPixels (cachedRenderArray, 0, w, 0, 0, w, h);
 282         bm.recycle();
 283         return cachedRenderArray;
 284     }
 285
 286     private int[] cachedRenderArray = new int [256];
 287
 288     //==============================================================================
 289     public static class HTTPStream
 290     {
 291         public HTTPStream (HttpURLConnection connection_) throws IOException
 292         {
 293             connection = connection_;
 294             inputStream = new BufferedInputStream (connection.getInputStream());
 295         }
 296
 297         public final void release()
 298         {
 299             try
 300             {
 301                 inputStream.close();
 302             }
 303             catch (IOException e)
 304             {}
 305
 306             connection.disconnect();
 307         }
 308
 309         public final int read (byte[] buffer, int numBytes)
 310         {
 311             int num = 0;
 312
 313             try
 314             {
 315                 num = inputStream.read (buffer, 0, numBytes);
 316             }
 317             catch (IOException e)
 318             {}
 319
 320             if (num > 0)
 321                 position += num;
 322
 323             return num;
 324         }
 325
 326         public final long getPosition()
 327         {
 328             return position;
 329         }
 330
 331         public final long getTotalLength()
 332         {
 333             return -1;
 334         }
 335
 336         public final boolean isExhausted()
 337         {
 338             return false;
 339         }
 340
 341         public final boolean setPosition (long newPos)
 342         {
 343             return false;
 344         }
 345
 346         private HttpURLConnection connection;
 347         private InputStream inputStream;
 348         private long position;
 349     }
 350
 351     public static final HTTPStream createHTTPStream (String address, boolean isPost, byte[] postData,
 352                                                      String headers, int timeOutMs, java.lang.StringBuffer responseHeaders)
 353     {
 354         try
 355         {
 356             HttpURLConnection connection = (HttpURLConnection) (new URL (address).openConnection());
 357
 358             if (connection != null)
 359             {
 360                 try
 361                 {
 362                     if (isPost)
 363                     {
 364                         connection.setConnectTimeout (timeOutMs);
 365                         connection.setDoOutput (true);
 366                         connection.setChunkedStreamingMode (0);
 367
 368                         OutputStream out = connection.getOutputStream();
 369                         out.write (postData);
 370                         out.flush();
 371                     }
 372
 373                     return new HTTPStream (connection);
 374                 }
 375                 catch (Throwable e)
 376                 {
 377                     connection.disconnect();
 378                 }
 379             }
 380         }
 381         catch (Throwable e)
 382         {}
 383
 384         return null;
 385     }
 386 }