Updates to the Android SampleApp

http://codereview.appspot.com/4602049/


git-svn-id: http://skia.googlecode.com/svn/trunk@1567 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 214 insertions, 46 deletions

diff --git a/android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java b/android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
index b02c4d7fe4..fe733603eb 100644
--- a/android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
+++ b/android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
@@ -19,94 +19,151 @@ package com.skia.sampleapp;
 import android.app.Activity;
 import android.content.Context;
 import android.graphics.Canvas;
+import android.opengl.GLSurfaceView;
 import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
 import android.util.AttributeSet;
 import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
 public class SampleApp extends Activity
 {
     private TextView mTitle;
-
-    public class SampleView extends View {
-        public SampleView(Context context) {
-            super(context);
-            createOSWindow(this);
-        }
-
-        @Override
-        protected void onDraw(Canvas canvas) {
-            drawToCanvas(canvas);
-        }
-
-        @Override
-        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-            updateSize(w, h);
-        }
-
-        @Override
-        public boolean onTouchEvent(MotionEvent event) {
-            final int x = (int) event.getX();
-            final int y = (int) event.getY();
-            final int action = event.getAction();
-            handleClick(x, y, action);
-            return true;
-        }
-    }
+    private SampleView mView;
 
     @Override
-    public void onCreate(Bundle savedInstanceState)
-    {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        init();
         setContentView(R.layout.layout);
         mTitle = (TextView) findViewById(R.id.title_view);
         LinearLayout holder = (LinearLayout) findViewById(R.id.holder);
-        View view = new SampleView(this);
-        holder.addView(view, new LinearLayout.LayoutParams(
+        mView = new SampleView(this);
+
+        holder.addView(mView, new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 ViewGroup.LayoutParams.MATCH_PARENT));
+        
+        mTitle.setVisibility(View.GONE);
+        getActionBar().setDisplayShowHomeEnabled(false);
+        
     }
 
     @Override
-    public void onDestroy()
-    {
-        term();
+    public void onDestroy() {
+        mView.queueEvent(new Runnable() {
+            @Override
+            public void run() {
+                term();
+            }
+        });
         super.onDestroy();
     }
 
     @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.sample, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.overview:
+                mView.queueEvent(new Runnable() {
+                    @Override
+                    public void run() {
+                        handleKeyDown(KeyEvent.KEYCODE_BACK, 0);
+                    }
+                });
+                return true;
+            case R.id.next:
+                mView.queueEvent(new Runnable() {
+                    @Override
+                    public void run() {
+                        handleKeyDown(KeyEvent.KEYCODE_DPAD_RIGHT, 0);
+                    }
+                });
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
+        final int keycode = event.getKeyCode();
+        if (keycode == KeyEvent.KEYCODE_BACK) {
+            if (event.getAction() == KeyEvent.ACTION_UP) {
+                finish();
+            }
+            return true;
+        }
         switch (event.getAction()) {
             case KeyEvent.ACTION_DOWN:
-                int uni = event.getUnicodeChar(event.getMetaState());
-                return handleKeyDown(event.getKeyCode(), uni);
+                final int uni = event.getUnicodeChar(event.getMetaState());
+                mView.queueEvent(new Runnable() {
+                    @Override
+                    public void run() {
+                        handleKeyDown(keycode, uni);
+                    }
+                });
+                
+                return true;
             case KeyEvent.ACTION_UP:
-                return handleKeyUp(event.getKeyCode());
+                mView.queueEvent(new Runnable() {
+                    @Override
+                    public void run() {
+                        handleKeyUp(keycode);
+                    }
+                });
+                return true;
             default:
                 return false;
         }
     }
 
+    private static final int SET_TITLE = 1;
+    
+    private Handler mHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case SET_TITLE:
+                    mTitle.setText((String) msg.obj);
+                    SampleApp.this.getActionBar().setSubtitle((String) msg.obj);
+                    break;
+                default:
+                    break;
+            }
+        }
+    };
+    
     @Override
     public void setTitle(CharSequence title) {
-        mTitle.setText(title);
+        mHandler.obtainMessage(SET_TITLE, title).sendToTarget();
     }
 
-    private native void drawToCanvas(Canvas canvas);
-    private native void init();
-    private native void term();
+    native void draw();
+    native void init();
+    native void term();
     // Currently depends on init having already been called.
-    private native void createOSWindow(SampleView view);
-    private native void updateSize(int w, int h);
-    private native void handleClick(int x, int y, int state);
-    private native boolean handleKeyDown(int key, int uni);
-    private native boolean handleKeyUp(int key);
+    native void createOSWindow(GLSurfaceView view);
+    native void updateSize(int w, int h);
+    native void handleClick(int x, int y, int state);
+    native boolean handleKeyDown(int key, int uni);
+    native boolean handleKeyUp(int key);
+    native void zoom(float factor);
 
     static {
         System.loadLibrary("skia-sample");
diff --git a/android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java b/android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java
new file mode 100644
index 0000000000..0d76dcea93
--- /dev/null
+++ b/android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2011 Skia
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.skia.sampleapp;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.opengl.GLSurfaceView;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+import android.view.ScaleGestureDetector.OnScaleGestureListener;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+
+public class SampleView extends GLSurfaceView implements OnScaleGestureListener {
+    
+    private final SampleApp mApp;
+    private ScaleGestureDetector mDetector;
+    public SampleView(SampleApp app) {
+        super(app);
+        mApp = app;
+        setEGLContextClientVersion(2);
+        setEGLConfigChooser(8,8,8,8,0,8);
+        setRenderer(new SampleView.Renderer());
+        setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
+        mDetector = new ScaleGestureDetector(app, this);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        mDetector.onTouchEvent(event);
+        if (mDetector.isInProgress()) {
+            return true;
+        }
+
+        final int x = (int) event.getX();
+        final int y = (int) event.getY();
+        final int action = event.getAction();
+        queueEvent(new Runnable() {
+           @Override
+           public void run() {
+               mApp.handleClick(x, y, action);
+           }
+        });
+        
+        return true;
+    }
+    // ScaleGestureDetector.OnScaleGestureListener implementation
+    @Override
+    public boolean onScaleBegin(ScaleGestureDetector detector) {
+        return true;
+    }
+
+    @Override
+    public boolean onScale(ScaleGestureDetector detector) {
+        if (detector.getScaleFactor() != 1) {
+            final float difference = detector.getCurrentSpan() - detector.getPreviousSpan();
+            queueEvent(new Runnable() {
+                @Override
+                public void run() {
+                    mApp.zoom(difference * .03f);
+                }
+            });
+
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onScaleEnd(ScaleGestureDetector detector) {
+
+    }
+
+    private class Renderer implements GLSurfaceView.Renderer {
+        public void onDrawFrame(GL10 gl) {
+            mApp.draw();
+        }
+        
+        public void onSurfaceChanged(GL10 gl, int width, int height) {
+            mApp.updateSize(width, height);
+        }
+        
+        public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+            gl.glClearStencil(0);
+            gl.glClear(gl.GL_STENCIL_BUFFER_BIT);
+            mApp.init();
+            mApp.createOSWindow(SampleView.this);
+        }
+    }
+}
\ No newline at end of file