1 files changed, 88 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java b/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java
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+++ b/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java
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+/*
+ * 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.PackageInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ThemeUtils;
+import android.content.res.AssetManager;
+import android.content.res.Resources;
+import android.content.res.ThemeConfig;
+import android.graphics.Bitmap;
+
+import org.cyanogenmod.themes.provider.R;
+
+import java.io.File;
+import java.io.IOException;
+
+public class WallpaperPreviewGenerator {
+    private static final String WALLPAPER_ASSET_PATH = "wallpapers";
+    private static final String LOCKSCREEN_ASSET_PATH = "lockscreen";
+    private Context mContext;
+    private int mPreviewSize;
+    private int mThumbnailSize;
+
+    public WallpaperPreviewGenerator(Context context) {
+        mContext = context;
+        final Resources res = context.getResources();
+        mPreviewSize = res.getDimensionPixelSize(R.dimen.wallpaper_preview_size);
+        mThumbnailSize = res.getDimensionPixelSize(R.dimen.wallpaper_thumbnail_size);
+    }
+
+    public WallpaperItems generateWallpaperPreviews(PackageInfo themeInfo)
+            throws NameNotFoundException, IOException {
+        WallpaperItems items = new WallpaperItems();
+        if (themeInfo == null) {
+            Resources res = mContext.getPackageManager().getThemedResourcesForApplication("android",
+                    ThemeConfig.SYSTEM_DEFAULT);
+            items.wpPreview = items.lsPreview = BitmapUtils.decodeResource(res,
+                    com.android.internal.R.drawable.default_wallpaper, mPreviewSize, mPreviewSize);
+        } else {
+            final Context themeContext = mContext.createPackageContext(themeInfo.packageName, 0);
+            final AssetManager assets = themeContext.getAssets();
+            String path = ThemeUtils.getWallpaperPath(assets);
+            if (path != null) {
+                items.wpPreview = BitmapUtils.getBitmapFromAsset(themeContext, path,
+                        mPreviewSize, mPreviewSize);
+            }
+            path = ThemeUtils.getLockscreenWallpaperPath(assets);
+            if (path != null) {
+                items.lsPreview = BitmapUtils.getBitmapFromAsset(themeContext, path,
+                        mPreviewSize, mPreviewSize);
+            }
+        }
+        if (items.wpPreview != null) {
+            items.wpThumbnail = Bitmap.createScaledBitmap(items.wpPreview, mThumbnailSize,
+                    mThumbnailSize, true);
+        }
+        if (items.lsPreview != null) {
+            items.lsThumbnail = Bitmap.createScaledBitmap(items.lsPreview, mThumbnailSize,
+                    mThumbnailSize, true);
+        }
+        return items;
+    }
+
+    public class WallpaperItems {
+        // Wallpaper items
+        public Bitmap wpThumbnail;
+        public Bitmap wpPreview;
+
+        // Lockscreen wallpaper items
+        public Bitmap lsThumbnail;
+        public Bitmap lsPreview;
+    }
+}