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      1 /*
      2  * Copyright 2015 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 package org.skia.viewer;
      9 
     10 import android.app.Activity;
     11 import android.content.res.Configuration;
     12 import android.os.Bundle;
     13 import android.support.v4.widget.DrawerLayout;
     14 import android.support.v7.app.ActionBarDrawerToggle;
     15 import android.view.KeyEvent;
     16 import android.view.Menu;
     17 import android.view.MenuInflater;
     18 import android.view.MenuItem;
     19 import android.view.MotionEvent;
     20 import android.view.Surface;
     21 import android.view.SurfaceHolder;
     22 import android.view.SurfaceView;
     23 import android.view.View;
     24 import android.widget.ListView;
     25 
     26 public class ViewerActivity
     27         extends Activity implements SurfaceHolder.Callback, View.OnTouchListener {
     28     private static final float FLING_VELOCITY_THRESHOLD = 1000;
     29 
     30     private DrawerLayout mDrawerLayout;
     31     private ActionBarDrawerToggle mDrawerToggle;
     32     private ListView mDrawerList;
     33     private StateAdapter mStateAdapter;
     34 
     35     private ViewerApplication mApplication;
     36 
     37     private native void onSurfaceCreated(long handle, Surface surface);
     38     private native void onSurfaceChanged(long handle, Surface surface);
     39     private native void onSurfaceDestroyed(long handle);
     40     private native void onKeyPressed(long handle, int keycode);
     41     private native void onTouched(long handle, int owner, int state, float x, float y);
     42     private native void onUIStateChanged(long handle, String stateName, String stateValue);
     43 
     44     @Override
     45     public boolean onCreateOptionsMenu(Menu menu) {
     46         MenuInflater inflater = getMenuInflater();
     47         inflater.inflate(R.menu.title, menu);
     48         return true;
     49     }
     50 
     51     @Override
     52     public boolean onOptionsItemSelected(MenuItem item) {
     53         // Pass the event to ActionBarDrawerToggle, if it returns
     54         // true, then it has handled the app icon touch event
     55         if (mDrawerToggle != null && mDrawerToggle.onOptionsItemSelected(item)) {
     56             return true;
     57         }
     58 
     59         switch (item.getItemId()) {
     60             case R.id.action_left:
     61                 onKeyPressed(mApplication.getNativeHandle(), KeyEvent.KEYCODE_SOFT_LEFT);
     62                 return true;
     63             case R.id.action_right:
     64                 onKeyPressed(mApplication.getNativeHandle(), KeyEvent.KEYCODE_SOFT_RIGHT);
     65                 return true;
     66             default:
     67                 return super.onOptionsItemSelected(item);
     68         }
     69     }
     70 
     71     @Override
     72     protected void onCreate(Bundle savedInstanceState) {
     73         super.onCreate(savedInstanceState);
     74         setContentView(R.layout.activity_main);
     75 
     76         SurfaceView surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
     77         surfaceView.getHolder().addCallback(this);
     78         surfaceView.setOnTouchListener(this);
     79 
     80         mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
     81         if (mDrawerLayout != null) { // xlarge-land has no drawer layout (drawer is always open)
     82             mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
     83                     R.string.drawer_open, R.string.drawer_close);
     84             mDrawerLayout.addDrawerListener(mDrawerToggle);
     85             getActionBar().setDisplayHomeAsUpEnabled(true);
     86             getActionBar().setHomeButtonEnabled(true);
     87         }
     88 
     89         mDrawerList = (ListView) findViewById(R.id.leftDrawer);
     90         mStateAdapter = new StateAdapter(this);
     91         mDrawerList.setAdapter(mStateAdapter);
     92 
     93         mApplication = (ViewerApplication) getApplication();
     94         mApplication.setViewerActivity(this);
     95     }
     96 
     97     @Override
     98     protected void onPostCreate(Bundle savedInstanceState) {
     99         super.onPostCreate(savedInstanceState);
    100         if (mDrawerToggle != null) {
    101             mDrawerToggle.syncState();
    102         }
    103     }
    104 
    105     @Override
    106     public void onConfigurationChanged(Configuration newConfig) {
    107         super.onConfigurationChanged(newConfig);
    108         if (mDrawerToggle != null) {
    109             mDrawerToggle.onConfigurationChanged(newConfig);
    110         }
    111     }
    112 
    113     @Override
    114     protected void onDestroy() {
    115         mApplication.setViewerActivity(null);
    116         super.onDestroy();
    117     }
    118 
    119     @Override
    120     public void surfaceCreated(SurfaceHolder holder) {
    121         if (mApplication.getNativeHandle() != 0) {
    122             onSurfaceCreated(mApplication.getNativeHandle(), holder.getSurface());
    123         }
    124     }
    125 
    126     @Override
    127     public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
    128         if (mApplication.getNativeHandle() != 0) {
    129             onSurfaceChanged(mApplication.getNativeHandle(), holder.getSurface());
    130         }
    131     }
    132 
    133     @Override
    134     public void surfaceDestroyed(SurfaceHolder holder) {
    135         if (mApplication.getNativeHandle() != 0) {
    136             onSurfaceDestroyed(mApplication.getNativeHandle());
    137         }
    138     }
    139 
    140     @Override
    141     public boolean onTouch(View v, MotionEvent event) {
    142         int count = event.getPointerCount();
    143         for (int i = 0; i < count; i++) {
    144             final float x = event.getX(i);
    145             final float y = event.getY(i);
    146             final int owner = event.getPointerId(i);
    147             int action = event.getAction() & MotionEvent.ACTION_MASK;
    148             onTouched(mApplication.getNativeHandle(), owner, action, x, y);
    149         }
    150         return true;
    151     }
    152 
    153     public void setState(String stateJson) {
    154         mStateAdapter.setState(stateJson);
    155     }
    156 
    157     public void onStateChanged(String stateName, String stateValue) {
    158         onUIStateChanged(mApplication.getNativeHandle(), stateName, stateValue);
    159     }
    160 }
    161