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package cgeo.geocaching.network;
import cgeo.geocaching.R;
import cgeo.geocaching.Settings;
import cgeo.geocaching.cgBase;
import cgeo.geocaching.connector.ConnectorFactory;
import cgeo.geocaching.files.LocalStorage;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.entity.BufferedHttpEntity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.text.Html;
import android.util.Log;
import android.view.Display;
import android.view.WindowManager;
import java.io.File;
import java.util.Date;
public class HtmlImage implements Html.ImageGetter {
private static final String[] BLOCKED = new String[] {
"gccounter.de",
"gccounter.com",
"cachercounter/?",
"gccounter/imgcount.php",
"flagcounter.com",
"compteur-blog.net",
"counter.digits.com"
};
final private Context context;
final private String geocode;
/**
* on error: return large error image, if <code>true</code>, otherwise empty 1x1 image
*/
final private boolean returnErrorImage;
final private int reason;
final private boolean onlySave;
final private boolean save;
final private BitmapFactory.Options bfOptions;
final private int maxWidth;
final private int maxHeight;
public HtmlImage(final Context context, final String geocode, final boolean returnErrorImage, final int reason, final boolean onlySave) {
this(context, geocode, returnErrorImage, reason, onlySave, true);
}
public HtmlImage(final Context contextIn, final String geocode, final boolean returnErrorImage, final int reason, final boolean onlySave, final boolean save) {
this.context = contextIn;
this.geocode = geocode;
this.returnErrorImage = returnErrorImage;
this.reason = reason;
this.onlySave = onlySave;
this.save = save;
bfOptions = new BitmapFactory.Options();
bfOptions.inTempStorage = new byte[16 * 1024];
final Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
this.maxWidth = display.getWidth() - 25;
this.maxHeight = display.getHeight() - 25;
}
@Override
public BitmapDrawable getDrawable(final String url) {
// Reject empty and counter images URL
if (StringUtils.isBlank(url) || isCounter(url)) {
return null;
}
Bitmap imagePre = null;
// Load image from cache
if (!onlySave) {
imagePre = loadImageFromStorage(url);
}
// Download image and save it to the cache
if (imagePre == null || onlySave) {
final String absoluteURL = makeAbsoluteURL(url);
BufferedHttpEntity bufferedEntity = null;
if (absoluteURL != null) {
try {
final HttpResponse httpResponse = cgBase.request(absoluteURL, null, false);
if (httpResponse != null) {
bufferedEntity = new BufferedHttpEntity(httpResponse.getEntity());
}
} catch (Exception e) {
Log.e(Settings.tag, "HtmlImage.getDrawable (downloading from web)", e);
}
}
if (save) {
final File file = LocalStorage.getStorageFile(geocode, url, true);
LocalStorage.saveEntityToFile(bufferedEntity, file);
}
}
if (onlySave) {
return null;
}
// now load the newly downloaded image
if (imagePre == null) {
imagePre = loadImageFromStorage(url);
}
// get image and return
if (imagePre == null) {
Log.d(Settings.tag, "HtmlImage.getDrawable: Failed to obtain image");
if (returnErrorImage) {
imagePre = BitmapFactory.decodeResource(context.getResources(), R.drawable.image_not_loaded);
} else {
imagePre = BitmapFactory.decodeResource(context.getResources(), R.drawable.image_no_placement);
}
}
final int imgWidth = imagePre.getWidth();
final int imgHeight = imagePre.getHeight();
int width;
int height;
if (imgWidth > maxWidth || imgHeight > maxHeight) {
final double ratio = Math.min((double) maxHeight / (double) imgHeight, (double) maxWidth / (double) imgWidth);
width = (int) Math.ceil(imgWidth * ratio);
height = (int) Math.ceil(imgHeight * ratio);
try {
imagePre = Bitmap.createScaledBitmap(imagePre, width, height, true);
} catch (Exception e) {
Log.d(Settings.tag, "HtmlImage.getDrawable: Failed to scale image");
return null;
}
} else {
width = imgWidth;
height = imgHeight;
}
final BitmapDrawable image = new BitmapDrawable(imagePre);
image.setBounds(new Rect(0, 0, width, height));
return image;
}
private Bitmap loadImageFromStorage(final String url) {
try {
final File file = LocalStorage.getStorageFile(geocode, url, true);
final Bitmap image = loadCachedImage(file);
if (image != null) {
return image;
}
final File fileSec = LocalStorage.getStorageSecFile(geocode, url, true);
return loadCachedImage(fileSec);
} catch (Exception e) {
Log.w(Settings.tag, "HtmlImage.getDrawable (reading cache): " + e.toString());
}
return null;
}
private final String makeAbsoluteURL(final String url) {
try {
// Check if uri is absolute or not, if not attach the connector hostname
// FIXME: that should also include the scheme
if (Uri.parse(url).isAbsolute()) {
return url;
} else {
final String host = ConnectorFactory.getConnector(geocode).getHost();
if (StringUtils.isNotEmpty(host)) {
return "http://" + host + url;
}
}
} catch (Exception e) {
Log.e(Settings.tag, "HtmlImage.makeAbsoluteURL (parse URL)", e);
}
return null;
}
private Bitmap loadCachedImage(final File file) {
if (file.exists()) {
if (reason > 0 || file.lastModified() > (new Date().getTime() - (24 * 60 * 60 * 1000))) {
setSampleSize(file.length());
return BitmapFactory.decodeFile(file.getPath(), bfOptions);
}
}
return null;
}
private void setSampleSize(final long imageSize) {
// large images will be downscaled on input to save memory
if (imageSize > (6 * 1024 * 1024)) {
bfOptions.inSampleSize = 48;
} else if (imageSize > (4 * 1024 * 1024)) {
bfOptions.inSampleSize = 16;
} else if (imageSize > (2 * 1024 * 1024)) {
bfOptions.inSampleSize = 10;
} else if (imageSize > (1 * 1024 * 1024)) {
bfOptions.inSampleSize = 6;
} else if (imageSize > (0.5 * 1024 * 1024)) {
bfOptions.inSampleSize = 2;
}
}
private static boolean isCounter(final String url) {
for (String entry : BLOCKED) {
if (StringUtils.containsIgnoreCase(url, entry)) {
return true;
}
}
return false;
}
}
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