thoerup/side9/ImageAdapter.java

package dk.thoerup.side9;

import java.io.File;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

public class ImageAdapter extends BaseAdapter {
        

        
    //int mGalleryItemBackground;
    private Context mContext;
    
    ArrayList<ImageEntry> mImages = new ArrayList<ImageEntry>();
    
    
    
    
    int thumbSize;

    public ImageAdapter(Context c) {
        mContext = c;
        
        String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
        
        
        
        File root = new File(path);
        
        if (root.exists() == false) {
                Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
                return;
        } 

        File files[] = root.listFiles( new ExtensionFilter("jpg") );
        

        String thumbPath =  path + "/.thumb/";
        
        File thumbDir = new File(thumbPath);
        if (! thumbDir.exists()) {
                thumbDir.mkdirs();
        }
        
        
        for (File f : files) {
                
                ImageEntry entry = new ImageEntry();
                entry.path = f.getPath(); 

                String fileName = f.getName();
                File thumb = new File ( thumbPath + fileName );
                
                if (! thumb.exists() || thumb.lastModified() < f.lastModified()) {
                        Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
                        Bitmap scaled =  Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
                        entry.thumb = scaled;
                        try {
                                FileOutputStream fos = new FileOutputStream(thumb);
                                scaled.compress(CompressFormat.JPEG, 90, fos);   
                                fos.close();
                                
                        } catch (IOException e) {
                                Log.e("Side9", "error", e);
                        }
                        
                } else {
                        Bitmap thumbBmp = BitmapFactory.decodeFile( thumb.getPath());
                        entry.thumb = thumbBmp;
                }
                
                /* load captions */
                String infoFileName = f.getPath().replace(".jpg", ".txt");

                File infoFile = new File(infoFileName);
                if (infoFile.exists() ) { 
                        entry.caption = cleanString( getFileContent(infoFile) );
                } else {
                        entry.caption = "";
                }               
            
                mImages.add(entry);
        }
        
        Collections.sort(mImages,  new ImageEntry.PathComparator() );
        
        thumbSize = getSize();
    }
    
    public void orderByPath() {
        Collections.sort(mImages, new ImageEntry.PathComparator());
        this.notifyDataSetChanged();
    }
    
    public void orderByCaption() {
        Collections.sort(mImages, new ImageEntry.CaptionComparator());
        this.notifyDataSetChanged();
    }
    

    public int getCount() {
        return mImages.size();
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }
    
    public ImageEntry getImageEntry(int position) {
        return mImages.get(position);
    }
    
    public ArrayList<ImageEntry> getImages() {
        return mImages;
    }
    
    private int getSize() {
                 DisplayMetrics metrics = new DisplayMetrics();
                 WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
                 wmgr.getDefaultDisplay().getMetrics(metrics);
                 if (metrics.widthPixels < 480) {
                         return 150;
                 } else {
                         return 200;
                 }
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(thumbSize, thumbSize));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setAdjustViewBounds(true);   
            imageView.setPadding(4, 4, 4, 4);
        } else {
            imageView = (ImageView) convertView;
        }

        //imageView.setImageURI(  Uri.parse(mThumbPaths.get(position)) );
        imageView.setImageBitmap( mImages.get(position).thumb );
        return imageView;
    }
    
        String getFileContent(File filename) {
                try {
                        RandomAccessFile raf = new RandomAccessFile(filename, "r");
                        int size = (int)raf.length();
                        byte buf[] = new byte[size];
                        
                        raf.readFully(buf);                     
                        raf.close();
                        
                        return new String(buf);                 
                } catch (IOException e) {
                        Log.e("Side9", "Error", e);
                        return "";
                }
        }
        
        String cleanString(String input) { //trim and remove double spaces
                String res = input.trim();
                while ( res.contains( "  ")) {
                        res = res.replace("  ", " ");
                }
                
                return res;
        }
        

        
        
    
    class ExtensionFilter implements FilenameFilter {
        private String mExt;
        public ExtensionFilter(String ext) {
                mExt = ext;
        }

                @Override
                public boolean accept(File dir, String filename) {
                        String parts[] = filename.split("\\.");
                        if (parts.length > 1) {
                                String ext = parts[ parts.length -1];
                                if (ext.equals(mExt)) {
                                        return true;
                                }
                        }
                        return false;
                }
        
    }
}
1	package dk.thoerup.side9;
2
3	import java.io.File;
4	import java.io.FileOutputStream;
5	import java.io.FilenameFilter;
6	import java.io.IOException;
7	import java.io.RandomAccessFile;
8	import java.util.ArrayList;
9	import java.util.Collection;
10	import java.util.Collections;
11
12	import android.content.Context;
13	import android.graphics.Bitmap;
14	import android.graphics.BitmapFactory;
15	import android.graphics.Bitmap.CompressFormat;
16	import android.os.Environment;
17	import android.util.DisplayMetrics;
18	import android.util.Log;
19	import android.view.View;
20	import android.view.ViewGroup;
21	import android.view.WindowManager;
22	import android.widget.BaseAdapter;
23	import android.widget.GridView;
24	import android.widget.ImageView;
25	import android.widget.Toast;
26
27	public class ImageAdapter extends BaseAdapter {
28
29
30
31	//int mGalleryItemBackground;
32	private Context mContext;
33
34	ArrayList<ImageEntry> mImages = new ArrayList<ImageEntry>();
35
36
37
38
39	int thumbSize;
40
41	public ImageAdapter(Context c) {
42	mContext = c;
43
44	String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
45
46
47
48	File root = new File(path);
49
50	if (root.exists() == false) {
51	Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
52	return;
53	}
54
55	File files[] = root.listFiles( new ExtensionFilter("jpg") );
56
57
58	String thumbPath = path + "/.thumb/";
59
60	File thumbDir = new File(thumbPath);
61	if (! thumbDir.exists()) {
62	thumbDir.mkdirs();
63	}
64
65
66	for (File f : files) {
67
68	ImageEntry entry = new ImageEntry();
69	entry.path = f.getPath();
70
71	String fileName = f.getName();
72	File thumb = new File ( thumbPath + fileName );
73
74	if (! thumb.exists() \|\| thumb.lastModified() < f.lastModified()) {
75	Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
76	Bitmap scaled = Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
77	entry.thumb = scaled;
78	try {
79	FileOutputStream fos = new FileOutputStream(thumb);
80	scaled.compress(CompressFormat.JPEG, 90, fos);
81	fos.close();
82
83	} catch (IOException e) {
84	Log.e("Side9", "error", e);
85	}
86
87	} else {
88	Bitmap thumbBmp = BitmapFactory.decodeFile( thumb.getPath());
89	entry.thumb = thumbBmp;
90	}
91
92	/* load captions */
93	String infoFileName = f.getPath().replace(".jpg", ".txt");
94
95	File infoFile = new File(infoFileName);
96	if (infoFile.exists() ) {
97	entry.caption = cleanString( getFileContent(infoFile) );
98	} else {
99	entry.caption = "";
100	}
101
102	mImages.add(entry);
103	}
104
105	Collections.sort(mImages, new ImageEntry.PathComparator() );
106
107	thumbSize = getSize();
108	}
109
110	public void orderByPath() {
111	Collections.sort(mImages, new ImageEntry.PathComparator());
112	this.notifyDataSetChanged();
113	}
114
115	public void orderByCaption() {
116	Collections.sort(mImages, new ImageEntry.CaptionComparator());
117	this.notifyDataSetChanged();
118	}
119
120
121	public int getCount() {
122	return mImages.size();
123	}
124
125	public Object getItem(int position) {
126	return position;
127	}
128
129	public long getItemId(int position) {
130	return position;
131	}
132
133	public ImageEntry getImageEntry(int position) {
134	return mImages.get(position);
135	}
136
137	public ArrayList<ImageEntry> getImages() {
138	return mImages;
139	}
140
141	private int getSize() {
142	DisplayMetrics metrics = new DisplayMetrics();
143	WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
144	wmgr.getDefaultDisplay().getMetrics(metrics);
145	if (metrics.widthPixels < 480) {
146	return 150;
147	} else {
148	return 200;
149	}
150	}
151
152	public View getView(int position, View convertView, ViewGroup parent) {
153	ImageView imageView;
154	if (convertView == null) { // if it's not recycled, initialize some attributes
155	imageView = new ImageView(mContext);
156	imageView.setLayoutParams(new GridView.LayoutParams(thumbSize, thumbSize));
157	imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
158	imageView.setAdjustViewBounds(true);
159	imageView.setPadding(4, 4, 4, 4);
160	} else {
161	imageView = (ImageView) convertView;
162	}
163
164	//imageView.setImageURI( Uri.parse(mThumbPaths.get(position)) );
165	imageView.setImageBitmap( mImages.get(position).thumb );
166	return imageView;
167	}
168
169	String getFileContent(File filename) {
170	try {
171	RandomAccessFile raf = new RandomAccessFile(filename, "r");
172	int size = (int)raf.length();
173	byte buf[] = new byte[size];
174
175	raf.readFully(buf);
176	raf.close();
177
178	return new String(buf);
179	} catch (IOException e) {
180	Log.e("Side9", "Error", e);
181	return "";
182	}
183	}
184
185	String cleanString(String input) { //trim and remove double spaces
186	String res = input.trim();
187	while ( res.contains( " ")) {
188	res = res.replace(" ", " ");
189	}
190
191	return res;
192	}
193
194
195
196
197
198	class ExtensionFilter implements FilenameFilter {
199	private String mExt;
200	public ExtensionFilter(String ext) {
201	mExt = ext;
202	}
203
204	@Override
205	public boolean accept(File dir, String filename) {
206	String parts[] = filename.split("\\.");
207	if (parts.length > 1) {
208	String ext = parts[ parts.length -1];
209	if (ext.equals(mExt)) {
210	return true;
211	}
212	}
213	return false;
214	}
215
216	}
217	}