diff --git a/app/src/androidTest/java/com/hippo/ehviewer/CardBgTest.java b/app/src/androidTest/java/com/hippo/ehviewer/CardBgTest.java
new file mode 100644
index 000000000..f48cf5b35
--- /dev/null
+++ b/app/src/androidTest/java/com/hippo/ehviewer/CardBgTest.java
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2016 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.ehviewer;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.RectF;
+import android.os.Environment;
+
+import junit.framework.TestCase;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+
+public class CardBgTest extends TestCase {
+
+ private static final float[] TOP_ALPHA = {
+ 0f, // Dump
+ 0.12f,
+ 0.16f,
+ 0.19f,
+ 0.25f,
+ 0.30f,
+ };
+
+ private static final float[] TOP_OFFSET = {
+ 0f, // Dump
+ 1f,
+ 3f,
+ 10f,
+ 14f,
+ 19f,
+ };
+
+ private static final float[] TOP_BLUR = {
+ 0f, // Dump
+ 1.5f,
+ 3f,
+ 10f,
+ 14f,
+ 19f,
+ };
+
+ private static final float[] BOTTOM_ALPHA = {
+ 0f, // Dump
+ 0.24f,
+ 0.23f,
+ 0.23f,
+ 0.22f,
+ 0.22f,
+ };
+
+ private static final float[] BOTTOM_OFFSET = {
+ 0f, // Dump
+ 1f,
+ 3f,
+ 6f,
+ 10f,
+ 15f,
+ };
+
+ private static final float[] BOTTOM_BLUR = {
+ 0f, // Dump
+ 1f,
+ 3f,
+ 3f,
+ 5f,
+ 6f,
+ };
+
+ private static final int MAX_SIZE = 200;
+
+
+ public void testGen() throws FileNotFoundException {
+ genCardBg(Color.WHITE, 2, 2);
+ }
+
+ private Path getPath(float radius, float base) {
+ RectF rectF = new RectF();
+ Path path = new Path();
+ path.moveTo(base / 2, -base / 2 - radius);
+ rectF.set(base / 2 - radius, -base / 2 - radius, base / 2 + radius, -base / 2 + radius);
+ path.arcTo(rectF, -90, 90);
+ path.lineTo(base / 2 + radius, base / 2);
+ rectF.set(base / 2 - radius, base / 2 - radius, base / 2 + radius, base / 2 + radius);
+ path.arcTo(rectF, 0, 90);
+ path.lineTo(-base / 2, base / 2 + radius);
+ rectF.set(-base / 2 - radius, base / 2 - radius, -base / 2 + radius, base / 2 + radius);
+ path.arcTo(rectF, 90, 90);
+ path.lineTo(-base / 2 - radius, -base / 2);
+ rectF.set(-base / 2 - radius, -base / 2 - radius, -base / 2 + radius, -base / 2 + radius);
+ path.arcTo(rectF, 180, 90);
+ path.close();
+ return path;
+ }
+
+ private void genCardBg(int color, float radius, int elevation) throws FileNotFoundException {
+
+ float base = 4;
+ float topAlpha = TOP_ALPHA[elevation];
+ float topOffset = TOP_OFFSET[elevation];
+ float topBlur = TOP_BLUR[elevation];
+ float bottomAlpha = BOTTOM_ALPHA[elevation];
+ float bottomOffset = BOTTOM_OFFSET[elevation];
+ float bottomBlur = BOTTOM_BLUR[elevation];
+
+
+ float ratio = 3;
+
+
+ doGenCardBg(new FileOutputStream(new File(Environment.getExternalStorageDirectory(), "test.png")),
+ color, radius * ratio, base * ratio,
+ topAlpha, topOffset * ratio, topBlur * ratio,
+ bottomAlpha, bottomOffset * ratio, bottomBlur * ratio);
+
+
+ }
+
+ private int getColor(float alpha) {
+ return Color.argb((int) (alpha * 0xff), 0, 0, 0);
+ }
+
+ private void doGenCardBg(OutputStream os, int color, float radius, float base,
+ float topAlpha, float topOffset, float topBlur,
+ float bottomAlpha, float bottomOffset, float bottomBlur) throws FileNotFoundException {
+
+ Path path = getPath(radius, base);
+ path.offset(MAX_SIZE / 2, MAX_SIZE / 2);
+
+ Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
+ paint.setColor(color);
+ Bitmap bitmap = Bitmap.createBitmap(MAX_SIZE, MAX_SIZE, Bitmap.Config.ARGB_8888);
+ Canvas canvas = new Canvas(bitmap);
+
+ // Draw bottom
+ paint.setShadowLayer(bottomBlur, 0, bottomOffset, getColor(bottomAlpha));
+ canvas.drawPath(path, paint);
+
+ // Draw top
+ paint.setShadowLayer(topBlur, 0, topOffset, getColor(topAlpha));
+ canvas.drawPath(path, paint);
+
+ bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
+ }
+}
diff --git a/app/src/main/res/drawable-hdpi/card_grey_2dp.9.png b/app/src/main/res/drawable-hdpi/card_grey_2dp.9.png
new file mode 100644
index 000000000..dbb819aa3
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/card_grey_2dp.9.png differ
diff --git a/app/src/main/res/drawable-mdpi/card_grey_2dp.9.png b/app/src/main/res/drawable-mdpi/card_grey_2dp.9.png
new file mode 100644
index 000000000..14dbd13b1
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/card_grey_2dp.9.png differ
diff --git a/app/src/main/res/drawable-xhdpi/card_grey_2dp.9.png b/app/src/main/res/drawable-xhdpi/card_grey_2dp.9.png
new file mode 100644
index 000000000..48fcc7426
Binary files /dev/null and b/app/src/main/res/drawable-xhdpi/card_grey_2dp.9.png differ
diff --git a/app/src/main/res/drawable-xxhdpi/card_grey_2dp.9.png b/app/src/main/res/drawable-xxhdpi/card_grey_2dp.9.png
new file mode 100644
index 000000000..71173615c
Binary files /dev/null and b/app/src/main/res/drawable-xxhdpi/card_grey_2dp.9.png differ
diff --git a/app/src/main/res/drawable/card_background.xml b/app/src/main/res/drawable/card_background.xml
index 3bf952060..5537b2d90 100644
--- a/app/src/main/res/drawable/card_background.xml
+++ b/app/src/main/res/drawable/card_background.xml
@@ -18,7 +18,7 @@
-