smaller wallpaper files

src/org/geometerplus/fbreader/fbreader/FBView.java

@@ -26,6 +26,7 @@ import org.geometerplus.zlibrary.core.util.ZLColor;
 import org.geometerplus.zlibrary.core.library.ZLibrary;
 import org.geometerplus.zlibrary.core.view.ZLPaintContext;
 import org.geometerplus.zlibrary.core.filesystem.ZLFile;
+import org.geometerplus.zlibrary.core.filesystem.ZLResourceFile;
 
 import org.geometerplus.zlibrary.text.model.ZLTextModel;
 import org.geometerplus.zlibrary.text.view.*;
@@ -550,7 +551,7 @@ public final class FBView extends ZLTextView {
 			final int infoWidth = context.getStringWidth(infoString);
 			final ZLFile wallpaper = getWallpaperFile();
 			if (wallpaper != null) {
-				context.clear(wallpaper);
+				context.clear(wallpaper, wallpaper instanceof ZLResourceFile);
 			} else {
 				context.clear(getBackgroundColor());
 			}

src/org/geometerplus/zlibrary/core/view/DummyPaintContext.java

@@ -29,7 +29,7 @@ final class DummyPaintContext extends ZLPaintContext {
 	DummyPaintContext() {
 	}
 
-	public void clear(ZLFile wallpaperFile) {
+	public void clear(ZLFile wallpaperFile, boolean doMirror) {
 	}
 
 	public void clear(ZLColor color) {

src/org/geometerplus/zlibrary/core/view/ZLPaintContext.java

@@ -41,7 +41,7 @@ abstract public class ZLPaintContext {
 	protected ZLPaintContext() {
 	}
 
-	abstract public void clear(ZLFile wallpaperFile);
+	abstract public void clear(ZLFile wallpaperFile, boolean doMirror);
 	abstract public void clear(ZLColor color);
 
 	private boolean myResetFont = true;

src/org/geometerplus/zlibrary/text/view/ZLTextView.java

@@ -24,6 +24,7 @@ import java.util.*;
 import org.geometerplus.zlibrary.core.application.ZLApplication;
 import org.geometerplus.zlibrary.core.view.ZLPaintContext;
 import org.geometerplus.zlibrary.core.filesystem.ZLFile;
+import org.geometerplus.zlibrary.core.filesystem.ZLResourceFile;
 
 import org.geometerplus.zlibrary.text.model.*;
 import org.geometerplus.zlibrary.text.hyphenation.*;
@@ -256,7 +257,7 @@ public abstract class ZLTextView extends ZLTextViewBase {
 		myContext = context;
 		final ZLFile wallpaper = getWallpaperFile();
 		if (wallpaper != null) {
-			context.clear(wallpaper);
+			context.clear(wallpaper, wallpaper instanceof ZLResourceFile);
 		} else {
 			context.clear(getBackgroundColor());
 		}

src/org/geometerplus/zlibrary/ui/android/view/ZLAndroidPaintContext.java

@@ -67,20 +67,39 @@ public final class ZLAndroidPaintContext extends ZLPaintContext {
 	private ZLFile myWallpaperFile;
 	private Bitmap myWallpaper;
 	@Override
-	public void clear(ZLFile wallpaperFile) {
+	public void clear(ZLFile wallpaperFile, boolean doMirror) {
 		if (!wallpaperFile.equals(myWallpaperFile)) {
 			myWallpaperFile = wallpaperFile;
+			myWallpaper = null;
 			try {
-				myWallpaper = new BitmapFactory().decodeStream(wallpaperFile.getInputStream());
+				final Bitmap fileBitmap =
+					new BitmapFactory().decodeStream(wallpaperFile.getInputStream());
+				if (doMirror) {
+					final int w = fileBitmap.getWidth();
+					final int h = fileBitmap.getHeight();
+					final Bitmap wallpaper = Bitmap.createBitmap(2 * w, 2 * h, fileBitmap.getConfig());
+					for (int i = 0; i < w; ++i) {
+						for (int j = 0; j < h; ++j) {
+							int color = fileBitmap.getPixel(i, j);
+							wallpaper.setPixel(i, j, color);
+							wallpaper.setPixel(i, 2 * h - j - 1, color);
+							wallpaper.setPixel(2 * w - i - 1, j, color);
+							wallpaper.setPixel(2 * w - i - 1, 2 * h - j - 1, color);
+						}
+					}
+					myWallpaper = wallpaper;
+				} else {
+					myWallpaper = fileBitmap;
+				}
 			} catch (Throwable t) {
-				myWallpaper = null;
+				t.printStackTrace();
 			}
 		}
 		if (myWallpaper != null) {
 			final int w = myWallpaper.getWidth();
 			final int h = myWallpaper.getHeight();
-			for (int cw = 0; cw < myWidth; cw += w) {
-				for (int ch = 0; ch < myHeight; ch += h) {
+			for (int cw = 0, iw = 1; cw < myWidth; cw += w, ++iw) {
+				for (int ch = 0, ih = 1; ch < myHeight; ch += h, ++ih) {
 					myCanvas.drawBitmap(myWallpaper, cw, ch, myFillPaint);
 				}
 			}