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 cleanUp() {
        mImages.clear();
    }
    
    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
40	int thumbSize;
41
42	public ImageAdapter(Context c) {
43	mContext = c;
44
45	String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
46
47
48
49	File root = new File(path);
50
51	if (root.exists() == false) {
52	Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
53	return;
54	}
55
56	File files[] = root.listFiles( new ExtensionFilter("jpg") );
57
58
59	String thumbPath = path + "/.thumb/";
60
61	File thumbDir = new File(thumbPath);
62	if (! thumbDir.exists()) {
63	thumbDir.mkdirs();
64	}
65
66
67	for (File f : files) {
68
69	ImageEntry entry = new ImageEntry();
70	entry.path = f.getPath();
71
72	String fileName = f.getName();
73	File thumb = new File ( thumbPath + fileName );
74
75	if (! thumb.exists() \|\| thumb.lastModified() < f.lastModified()) {
76	Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
77	Bitmap scaled = Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
78	entry.thumb = scaled;
79	try {
80	FileOutputStream fos = new FileOutputStream(thumb);
81	scaled.compress(CompressFormat.JPEG, 90, fos);
82	fos.close();
83
84	} catch (IOException e) {
85	Log.e("Side9", "error", e);
86	}
87
88	} else {
89	Bitmap thumbBmp = BitmapFactory.decodeFile( thumb.getPath());
90	entry.thumb = thumbBmp;
91	}
92
93	/* load captions */
94	String infoFileName = f.getPath().replace(".jpg", ".txt");
95
96	File infoFile = new File(infoFileName);
97	if (infoFile.exists() ) {
98	entry.caption = cleanString( getFileContent(infoFile) );
99	} else {
100	entry.caption = "";
101	}
102
103	mImages.add(entry);
104	}
105
106	Collections.sort(mImages, new ImageEntry.PathComparator() );
107
108	thumbSize = getSize();
109	}
110
111	public void cleanUp() {
112	mImages.clear();
113	}
114
115	public void orderByPath() {
116	Collections.sort(mImages, new ImageEntry.PathComparator());
117	this.notifyDataSetChanged();
118	}
119
120	public void orderByCaption() {
121	Collections.sort(mImages, new ImageEntry.CaptionComparator());
122	this.notifyDataSetChanged();
123	}
124
125
126	public int getCount() {
127	return mImages.size();
128	}
129
130	public Object getItem(int position) {
131	return position;
132	}
133
134	public long getItemId(int position) {
135	return position;
136	}
137
138	public ImageEntry getImageEntry(int position) {
139	return mImages.get(position);
140	}
141
142	public ArrayList<ImageEntry> getImages() {
143	return mImages;
144	}
145
146	private int getSize() {
147	DisplayMetrics metrics = new DisplayMetrics();
148	WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
149	wmgr.getDefaultDisplay().getMetrics(metrics);
150	if (metrics.widthPixels < 480) {
151	return 150;
152	} else {
153	return 200;
154	}
155	}
156
157	public View getView(int position, View convertView, ViewGroup parent) {
158	ImageView imageView;
159	if (convertView == null) { // if it's not recycled, initialize some attributes
160	imageView = new ImageView(mContext);
161	imageView.setLayoutParams(new GridView.LayoutParams(thumbSize, thumbSize));
162	imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
163	imageView.setAdjustViewBounds(true);
164	imageView.setPadding(4, 4, 4, 4);
165	} else {
166	imageView = (ImageView) convertView;
167	}
168
169	//imageView.setImageURI( Uri.parse(mThumbPaths.get(position)) );
170	imageView.setImageBitmap( mImages.get(position).thumb );
171	return imageView;
172	}
173
174	String getFileContent(File filename) {
175	try {
176	RandomAccessFile raf = new RandomAccessFile(filename, "r");
177	int size = (int)raf.length();
178	byte buf[] = new byte[size];
179
180	raf.readFully(buf);
181	raf.close();
182
183	return new String(buf);
184	} catch (IOException e) {
185	Log.e("Side9", "Error", e);
186	return "";
187	}
188	}
189
190	String cleanString(String input) { //trim and remove double spaces
191	String res = input.trim();
192	while ( res.contains( " ")) {
193	res = res.replace(" ", " ");
194	}
195
196	return res;
197	}
198
199
200
201
202
203	class ExtensionFilter implements FilenameFilter {
204	private String mExt;
205	public ExtensionFilter(String ext) {
206	mExt = ext;
207	}
208
209	@Override
210	public boolean accept(File dir, String filename) {
211	String parts[] = filename.split("\\.");
212	if (parts.length > 1) {
213	String ext = parts[ parts.length -1];
214	if (ext.equals(mExt)) {
215	return true;
216	}
217	}
218	return false;
219	}
220
221	}
222	}