thoerup/side9/PictureView.java

package dk.thoerup.side9;


import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.widget.ImageView;
import android.widget.TextView;
import dk.thoerup.side9.anim.DisplayNextView;
import dk.thoerup.side9.anim.Flip3dAnimation;

public class PictureView extends Activity {
        final static int CONTEXT_VIEWIMG = 1000;

        final static String TAG = "Side9Pigen";
        
        TextView mDescription;
        TextView mCaption;
        ImageView mImageView1;
        ImageView mImageView2;
        
        boolean isFirstImage = true;
        
        ArrayList<ImageEntry> mImages;
        int mIndex;
        
        
        Bitmap mBitmap;
        
        @SuppressWarnings("unchecked")
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.pictureview);
                
                mImages = (ArrayList<ImageEntry>) getIntent().getSerializableExtra("images");
                mIndex = getIntent().getIntExtra("index", 0);
                
                
                mImageView1 = (ImageView) findViewById(R.id.imageview1);
                mImageView1.setOnTouchListener( new Touch() );
                
                mImageView2 = (ImageView) findViewById(R.id.imageview2);
                
                mCaption = (TextView) findViewById(R.id.caption);
                mDescription = (TextView) findViewById(R.id.description);
                
                
                loadImage(true, true);
                
        }
        
        
        private void loadImage(int newIndex) {
                Log.e(TAG, "NewIndex " + newIndex);
                if (newIndex != mIndex) {
                        
                        boolean isForward = (newIndex > mIndex); 
                        
                        mIndex = newIndex;
                        loadImage(false,isForward);
                }
        }
        
        private void loadImage(boolean firstLoad, boolean isForward) {
                ImageEntry currentImage = mImages.get(mIndex);
                mBitmap = BitmapFactory.decodeFile( currentImage.path );
                
                if (firstLoad) {
                        mImageView1.setImageBitmap(mBitmap);
                        isFirstImage = true;
                } else {
                        
                        int endAngle = isForward ? -90 : 90; 
                        
                        if (isFirstImage) {
                                mImageView2.setImageBitmap(mBitmap);
                                applyRotation(0, endAngle, isForward);
                        } else {
                                mImageView1.setImageBitmap(mBitmap);
                                applyRotation(0, endAngle, isForward);
                        }
                        
                                        
                        isFirstImage = !isFirstImage;
                }
                                                
                
                if (currentImage.caption.length() > 0) {                        
                        mCaption.setVisibility(View.VISIBLE);
                        mCaption.setText(currentImage.caption);
                } else {
                        mCaption.setVisibility(View.INVISIBLE);
                }

                String pathParts[] = currentImage.path.split("/");
                String fileName = pathParts[ pathParts.length -1];
                String desc = "" + (mIndex +1) + "/" + mImages.size() + " - " + fileName;
                mDescription.setText(desc);             
        }

         
        private void applyRotation(float start, float end, boolean isForward) {
                // Find the center of image
                final float centerX = mImageView1.getWidth() / 2.0f;
                final float centerY = mImageView1.getHeight() / 2.0f;

                // Create a new 3D rotation with the supplied parameter
                // The animation listener is used to trigger the next animation
                final Flip3dAnimation rotation = new Flip3dAnimation(start, end, centerX, centerY);
                rotation.setDuration(250);
                rotation.setFillAfter(true);
                rotation.setInterpolator(new AccelerateInterpolator());
                rotation.setAnimationListener(new DisplayNextView(isFirstImage, isForward, mImageView1, mImageView2));

                if (isFirstImage)
                {
                        mImageView1.startAnimation(rotation);
                } else {
                        mImageView2.startAnimation(rotation);
                }

        }


        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
                MenuItem item = menu.add(Menu.NONE, CONTEXT_VIEWIMG, Menu.NONE, "Built-in viewer");
                item.setIcon( android.R.drawable.ic_menu_gallery);
                return true;
        }


        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
                boolean res;
                
                switch(item.getItemId()) {
                case CONTEXT_VIEWIMG:
                String uri = "file://" + mImages.get(mIndex).path;
                
                Intent i = new Intent(Intent.ACTION_VIEW);
                i.setDataAndType(Uri.parse(uri), "image/jpeg");
                startActivity(i);
                res = true;
                break;
        default:
                res = super.onOptionsItemSelected(item);
                }
                
                return res;
        }

        class Touch implements View.OnTouchListener {

                Float firstX = null;
                
                
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                        if (event.getAction() == MotionEvent.ACTION_DOWN) {
                                firstX = event.getX();
                        } else {
                                if (firstX != null) {
                                        float x = event.getX();                                 
                                        float diff = firstX - x;                                        
                                        
                                        if (diff > 150) {
                                                int newIndex = Math.min(mIndex+1, mImages.size() -1);                                                                           
                                                loadImage(newIndex);
                                                firstX = null;
                                                return false;
                                        }
                                        
                                        if (diff < -150) {
                                                int newIndex = Math.max(mIndex-1, 0);                                           
                                                loadImage(newIndex);
                                                firstX = null;
                                                return false;
                                        }
                                }       
                        }
                        
                        return true;
                }
                
        }
}
1	package dk.thoerup.side9;
2
3
4	import java.util.ArrayList;
5
6	import android.app.Activity;
7	import android.content.Intent;
8	import android.graphics.Bitmap;
9	import android.graphics.BitmapFactory;
10	import android.net.Uri;
11	import android.os.Bundle;
12	import android.util.Log;
13	import android.view.Menu;
14	import android.view.MenuItem;
15	import android.view.MotionEvent;
16	import android.view.View;
17	import android.view.animation.AccelerateInterpolator;
18	import android.widget.ImageView;
19	import android.widget.TextView;
20	import dk.thoerup.side9.anim.DisplayNextView;
21	import dk.thoerup.side9.anim.Flip3dAnimation;
22
23	public class PictureView extends Activity {
24	final static int CONTEXT_VIEWIMG = 1000;
25
26	final static String TAG = "Side9Pigen";
27
28	TextView mDescription;
29	TextView mCaption;
30	ImageView mImageView1;
31	ImageView mImageView2;
32
33	boolean isFirstImage = true;
34
35	ArrayList<ImageEntry> mImages;
36	int mIndex;
37
38
39	Bitmap mBitmap;
40
41	@SuppressWarnings("unchecked")
42	@Override
43	public void onCreate(Bundle savedInstanceState) {
44	super.onCreate(savedInstanceState);
45	setContentView(R.layout.pictureview);
46
47	mImages = (ArrayList<ImageEntry>) getIntent().getSerializableExtra("images");
48	mIndex = getIntent().getIntExtra("index", 0);
49
50
51	mImageView1 = (ImageView) findViewById(R.id.imageview1);
52	mImageView1.setOnTouchListener( new Touch() );
53
54	mImageView2 = (ImageView) findViewById(R.id.imageview2);
55
56	mCaption = (TextView) findViewById(R.id.caption);
57	mDescription = (TextView) findViewById(R.id.description);
58
59
60	loadImage(true, true);
61
62	}
63
64
65
66	private void loadImage(int newIndex) {
67	Log.e(TAG, "NewIndex " + newIndex);
68	if (newIndex != mIndex) {
69
70	boolean isForward = (newIndex > mIndex);
71
72	mIndex = newIndex;
73	loadImage(false,isForward);
74	}
75	}
76
77	private void loadImage(boolean firstLoad, boolean isForward) {
78	ImageEntry currentImage = mImages.get(mIndex);
79	mBitmap = BitmapFactory.decodeFile( currentImage.path );
80
81	if (firstLoad) {
82	mImageView1.setImageBitmap(mBitmap);
83	isFirstImage = true;
84	} else {
85
86	int endAngle = isForward ? -90 : 90;
87
88	if (isFirstImage) {
89	mImageView2.setImageBitmap(mBitmap);
90	applyRotation(0, endAngle, isForward);
91	} else {
92	mImageView1.setImageBitmap(mBitmap);
93	applyRotation(0, endAngle, isForward);
94	}
95
96
97
98	isFirstImage = !isFirstImage;
99	}
100
101
102	if (currentImage.caption.length() > 0) {
103	mCaption.setVisibility(View.VISIBLE);
104	mCaption.setText(currentImage.caption);
105	} else {
106	mCaption.setVisibility(View.INVISIBLE);
107	}
108
109	String pathParts[] = currentImage.path.split("/");
110	String fileName = pathParts[ pathParts.length -1];
111	String desc = "" + (mIndex +1) + "/" + mImages.size() + " - " + fileName;
112	mDescription.setText(desc);
113	}
114
115
116
117	private void applyRotation(float start, float end, boolean isForward) {
118	// Find the center of image
119	final float centerX = mImageView1.getWidth() / 2.0f;
120	final float centerY = mImageView1.getHeight() / 2.0f;
121
122	// Create a new 3D rotation with the supplied parameter
123	// The animation listener is used to trigger the next animation
124	final Flip3dAnimation rotation = new Flip3dAnimation(start, end, centerX, centerY);
125	rotation.setDuration(250);
126	rotation.setFillAfter(true);
127	rotation.setInterpolator(new AccelerateInterpolator());
128	rotation.setAnimationListener(new DisplayNextView(isFirstImage, isForward, mImageView1, mImageView2));
129
130	if (isFirstImage)
131	{
132	mImageView1.startAnimation(rotation);
133	} else {
134	mImageView2.startAnimation(rotation);
135	}
136
137	}
138
139
140
141
142	@Override
143	public boolean onCreateOptionsMenu(Menu menu) {
144	MenuItem item = menu.add(Menu.NONE, CONTEXT_VIEWIMG, Menu.NONE, "Built-in viewer");
145	item.setIcon( android.R.drawable.ic_menu_gallery);
146	return true;
147	}
148
149
150
151	@Override
152	public boolean onOptionsItemSelected(MenuItem item) {
153	boolean res;
154
155	switch(item.getItemId()) {
156	case CONTEXT_VIEWIMG:
157	String uri = "file://" + mImages.get(mIndex).path;
158
159	Intent i = new Intent(Intent.ACTION_VIEW);
160	i.setDataAndType(Uri.parse(uri), "image/jpeg");
161	startActivity(i);
162	res = true;
163	break;
164	default:
165	res = super.onOptionsItemSelected(item);
166	}
167
168	return res;
169	}
170
171	class Touch implements View.OnTouchListener {
172
173	Float firstX = null;
174
175
176	@Override
177	public boolean onTouch(View v, MotionEvent event) {
178	if (event.getAction() == MotionEvent.ACTION_DOWN) {
179	firstX = event.getX();
180	} else {
181	if (firstX != null) {
182	float x = event.getX();
183	float diff = firstX - x;
184
185	if (diff > 150) {
186	int newIndex = Math.min(mIndex+1, mImages.size() -1);
187	loadImage(newIndex);
188	firstX = null;
189	return false;
190	}
191
192	if (diff < -150) {
193	int newIndex = Math.max(mIndex-1, 0);
194	loadImage(newIndex);
195	firstX = null;
196	return false;
197	}
198	}
199	}
200
201	return true;
202	}
203
204	}
205	}