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	torben	925	package dk.thoerup.side9;
2
3	torben	1185
4	torben	925	import java.util.ArrayList;
5
6			import android.app.Activity;
7	torben	926	import android.content.Intent;
8	torben	925	import android.graphics.Bitmap;
9			import android.graphics.BitmapFactory;
10	torben	926	import android.net.Uri;
11	torben	925	import android.os.Bundle;
12			import android.util.Log;
13	torben	926	import android.view.Menu;
14			import android.view.MenuItem;
15	torben	925	import android.view.MotionEvent;
16			import android.view.View;
17	torben	1217	import android.view.animation.AccelerateInterpolator;
18	torben	925	import android.widget.ImageView;
19			import android.widget.TextView;
20	torben	1217	import dk.thoerup.side9.anim.DisplayNextView;
21			import dk.thoerup.side9.anim.Flip3dAnimation;
22	torben	925
23			public class PictureView extends Activity {
24	torben	926	final static int CONTEXT_VIEWIMG = 1000;
25	torben	925
26			final static String TAG = "Side9Pigen";
27
28			TextView mDescription;
29			TextView mCaption;
30	torben	1217	ImageView mImageView1;
31			ImageView mImageView2;
32
33			boolean isFirstImage = true;
34
35	torben	1187	ArrayList<ImageEntry> mImages;
36	torben	925	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	torben	1187	mImages = (ArrayList<ImageEntry>) getIntent().getSerializableExtra("images");
48	torben	925	mIndex = getIntent().getIntExtra("index", 0);
49
50
51	torben	1217	mImageView1 = (ImageView) findViewById(R.id.imageview1);
52			mImageView1.setOnTouchListener( new Touch() );
53	torben	926
54	torben	1217	mImageView2 = (ImageView) findViewById(R.id.imageview2);
55
56	torben	926	mCaption = (TextView) findViewById(R.id.caption);
57	torben	925	mDescription = (TextView) findViewById(R.id.description);
58
59	torben	926
60	torben	1217	loadImage(true, true);
61	torben	925
62			}
63
64	torben	926
65
66	torben	925	private void loadImage(int newIndex) {
67			Log.e(TAG, "NewIndex " + newIndex);
68			if (newIndex != mIndex) {
69	torben	1217
70			boolean isForward = (newIndex > mIndex);
71
72	torben	925	mIndex = newIndex;
73	torben	1217	loadImage(false,isForward);
74	torben	925	}
75			}
76
77	torben	1217	private void loadImage(boolean firstLoad, boolean isForward) {
78	torben	1187	ImageEntry currentImage = mImages.get(mIndex);
79	torben	1185	mBitmap = BitmapFactory.decodeFile( currentImage.path );
80	torben	1217
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	torben	1185
101	torben	925
102	torben	1185	if (currentImage.caption.length() > 0) {
103	torben	925	mCaption.setVisibility(View.VISIBLE);
104	torben	1185	mCaption.setText(currentImage.caption);
105	torben	925	} else {
106			mCaption.setVisibility(View.INVISIBLE);
107			}
108	torben	1185
109			String pathParts[] = currentImage.path.split("/");
110			String fileName = pathParts[ pathParts.length -1];
111	torben	1187	String desc = "" + (mIndex +1) + "/" + mImages.size() + " - " + fileName;
112	torben	1185	mDescription.setText(desc);
113	torben	925	}
114	torben	1217
115
116	torben	925
117	torben	1217	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	torben	926
122	torben	1217	// 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	torben	925
142	torben	926	@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	torben	1187	String uri = "file://" + mImages.get(mIndex).path;
158	torben	926
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	torben	925	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	torben	1187	int newIndex = Math.min(mIndex+1, mImages.size() -1);
187	torben	925	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			}