1 files changed, 93 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/themes/provider/util/BootAnimationPreviewGenerator.java b/src/org/cyanogenmod/themes/provider/util/BootAnimationPreviewGenerator.java
new file mode 100644
index 0000000..61771a7
--- /dev/null
+++ b/src/org/cyanogenmod/themes/provider/util/BootAnimationPreviewGenerator.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2014 The CyanogenMod Project
+ *
+ * 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 org.cyanogenmod.themes.provider.util;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.res.ThemeConfig;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.view.View;
+import android.widget.ImageView;
+import org.cyanogenmod.themes.provider.R;
+
+import java.io.BufferedInputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class BootAnimationPreviewGenerator {
+    public static final String SYSTEM_BOOT_ANI_PATH = "/system/media/bootanimation.zip";
+    public static final String THEME_BOOT_ANI_PATH = "bootanimation/bootanimation.zip";
+
+    private Context mContext;
+
+    public BootAnimationPreviewGenerator(Context context) {
+        mContext = context;
+    }
+
+    public Bitmap generateBootAnimationPreview(String pkgName)
+            throws IOException, PackageManager.NameNotFoundException {
+        ZipInputStream zis;
+        String previewName;
+        if (ThemeConfig.SYSTEM_DEFAULT.equals(pkgName)) {
+            previewName = getPreviewFrameEntryName(new FileInputStream(SYSTEM_BOOT_ANI_PATH));
+            zis = new ZipInputStream(new FileInputStream(SYSTEM_BOOT_ANI_PATH));
+        } else {
+            final Context themeCtx = mContext.createPackageContext(pkgName, 0);
+            previewName = getPreviewFrameEntryName(themeCtx.getAssets().open(THEME_BOOT_ANI_PATH));
+            zis = new ZipInputStream(themeCtx.getAssets().open(THEME_BOOT_ANI_PATH));
+        }
+        ZipEntry ze;
+        Bitmap bmp = null;
+        while ((ze = zis.getNextEntry()) != null) {
+            final String entryName = ze.getName();
+            if (entryName.equals(previewName)) {
+                bmp = BitmapFactory.decodeStream(zis);
+                break;
+            }
+        }
+        zis.close();
+
+        View v = View.inflate(mContext, R.layout.bootanimation_preview, null);
+        ImageView iv = (ImageView) v.findViewById(R.id.preview);
+        iv.setImageBitmap(bmp);
+        return LayoutRenderUtils.renderViewToBitmap(v);
+    }
+
+    private String getPreviewFrameEntryName(InputStream is) throws IOException {
+        ZipInputStream zis = (is instanceof ZipInputStream) ? (ZipInputStream) is
+                : new ZipInputStream(new BufferedInputStream(is));
+        ZipEntry ze;
+        String previewName = null;
+        long max = 0;
+        while ((ze = zis.getNextEntry()) != null) {
+            final String entryName = ze.getName();
+            if (entryName.contains("/")
+                    && (entryName.endsWith(".png") || entryName.endsWith(".jpg"))) {
+                if(ze.getSize() > max) {
+                    previewName = entryName;
+                    max = ze.getSize();
+                }
+            }
+        }
+        zis.close();
+
+        return previewName;
+    }
+}