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);                          
                                
                        } 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);
                        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	torben	790	package dk.thoerup.side9;
2
3			import java.io.File;
4	torben	1013	import java.io.FileOutputStream;
5	torben	925	import java.io.FilenameFilter;
6	torben	1013	import java.io.IOException;
7	torben	1185	import java.io.RandomAccessFile;
8	torben	790	import java.util.ArrayList;
9	torben	1185	import java.util.Collection;
10			import java.util.Collections;
11	torben	790
12			import android.content.Context;
13			import android.graphics.Bitmap;
14			import android.graphics.BitmapFactory;
15	torben	1013	import android.graphics.Bitmap.CompressFormat;
16	torben	790	import android.os.Environment;
17	torben	915	import android.util.DisplayMetrics;
18	torben	1013	import android.util.Log;
19	torben	790	import android.view.View;
20			import android.view.ViewGroup;
21	torben	915	import android.view.WindowManager;
22	torben	790	import android.widget.BaseAdapter;
23			import android.widget.GridView;
24			import android.widget.ImageView;
25	torben	912	import android.widget.Toast;
26	torben	790
27			public class ImageAdapter extends BaseAdapter {
28	torben	1185
29
30
31	torben	790	//int mGalleryItemBackground;
32			private Context mContext;
33
34	torben	1185	ArrayList<ImageEntry> mImages = new ArrayList<ImageEntry>();
35	torben	915
36	torben	1185
37
38
39			int thumbSize;
40	torben	790
41			public ImageAdapter(Context c) {
42			mContext = c;
43
44			String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
45
46	torben	912
47
48	torben	790	File root = new File(path);
49	torben	912
50			if (root.exists() == false) {
51			Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
52			return;
53			}
54	torben	925
55			File files[] = root.listFiles( new ExtensionFilter("jpg") );
56	torben	912
57	torben	1013
58			String thumbPath = path + "/.thumb/";
59
60			File thumbDir = new File(thumbPath);
61			if (! thumbDir.exists()) {
62			thumbDir.mkdirs();
63	torben	790	}
64	torben	915
65	torben	1013
66			for (File f : files) {
67	torben	1185
68			ImageEntry entry = new ImageEntry();
69			entry.path = f.getPath();
70	torben	1013
71			String fileName = f.getName();
72			File thumb = new File ( thumbPath + fileName );
73
74	torben	1179	if (! thumb.exists() \|\| thumb.lastModified() < f.lastModified()) {
75	torben	1013	Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
76			Bitmap scaled = Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
77	torben	1185	entry.thumb = scaled;
78	torben	1013	try {
79			FileOutputStream fos = new FileOutputStream(thumb);
80			scaled.compress(CompressFormat.JPEG, 90, fos);
81
82			} catch (IOException e) {
83			Log.e("Side9", "error", e);
84			}
85
86			} else {
87			Bitmap thumbBmp = BitmapFactory.decodeFile( thumb.getPath());
88	torben	1185	entry.thumb = thumbBmp;
89	torben	1013	}
90
91	torben	1185	/* load captions */
92			String infoFileName = f.getPath().replace(".jpg", ".txt");
93
94			File infoFile = new File(infoFileName);
95			if (infoFile.exists() ) {
96			entry.caption = cleanString( getFileContent(infoFile) );
97			} else {
98			entry.caption = "";
99			}
100
101			mImages.add(entry);
102	torben	1013	}
103
104	torben	1185	Collections.sort(mImages, new ImageEntry.PathComparator() );
105
106			thumbSize = getSize();
107	torben	790	}
108	torben	1185
109			public void orderByPath() {
110			Collections.sort(mImages, new ImageEntry.PathComparator());
111			this.notifyDataSetChanged();
112			}
113
114			public void orderByCaption() {
115			Collections.sort(mImages, new ImageEntry.CaptionComparator());
116			this.notifyDataSetChanged();
117			}
118
119	torben	790
120			public int getCount() {
121	torben	1185	return mImages.size();
122	torben	790	}
123
124			public Object getItem(int position) {
125			return position;
126			}
127
128			public long getItemId(int position) {
129			return position;
130			}
131
132	torben	1185	public ImageEntry getImageEntry(int position) {
133			return mImages.get(position);
134	torben	790	}
135	torben	915
136	torben	1185	public ArrayList<ImageEntry> getImages() {
137			return mImages;
138	torben	925	}
139
140	torben	915	private int getSize() {
141			DisplayMetrics metrics = new DisplayMetrics();
142			WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
143			wmgr.getDefaultDisplay().getMetrics(metrics);
144			if (metrics.widthPixels < 480) {
145			return 150;
146			} else {
147			return 200;
148			}
149			}
150	torben	790
151			public View getView(int position, View convertView, ViewGroup parent) {
152			ImageView imageView;
153			if (convertView == null) { // if it's not recycled, initialize some attributes
154			imageView = new ImageView(mContext);
155	torben	1185	imageView.setLayoutParams(new GridView.LayoutParams(thumbSize, thumbSize));
156	torben	790	imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
157			imageView.setAdjustViewBounds(true);
158			imageView.setPadding(4, 4, 4, 4);
159			} else {
160			imageView = (ImageView) convertView;
161			}
162
163	torben	1013	//imageView.setImageURI( Uri.parse(mThumbPaths.get(position)) );
164	torben	1185	imageView.setImageBitmap( mImages.get(position).thumb );
165	torben	790	return imageView;
166	torben	925	}
167
168	torben	1185	String getFileContent(File filename) {
169			try {
170			RandomAccessFile raf = new RandomAccessFile(filename, "r");
171			int size = (int)raf.length();
172			byte buf[] = new byte[size];
173
174			raf.readFully(buf);
175			return new String(buf);
176			} catch (IOException e) {
177			Log.e("Side9", "Error", e);
178			return "";
179			}
180			}
181
182			String cleanString(String input) { //trim and remove double spaces
183			String res = input.trim();
184			while ( res.contains( " ")) {
185			res = res.replace(" ", " ");
186			}
187
188			return res;
189			}
190
191
192
193
194
195	torben	925	class ExtensionFilter implements FilenameFilter {
196			private String mExt;
197			public ExtensionFilter(String ext) {
198			mExt = ext;
199			}
200	torben	790
201	torben	925	@Override
202			public boolean accept(File dir, String filename) {
203			String parts[] = filename.split("\\.");
204			if (parts.length > 1) {
205			String ext = parts[ parts.length -1];
206			if (ext.equals(mExt)) {
207			return true;
208			}
209			}
210			return false;
211			}
212
213	torben	790	}
214			}