[2/2] Recognized multiple wallpapers in theme

Generate previews for multiple wallpapers in theme assets.
Add each wallpaper to the previews sql table.

Make sure current ThemeChooser won't display extra wallpapers.
Themes Provider will return defaults (first) wallpaper only for
current ThemeChooser implementations.

Later revisions of ThemeChooser will use different content URI
for querying multiple wallpaper previews.

Depends on:
http://review.cyanogenmod.org/#/c/98012/

Change-Id: I88616148a226126509f8aca2d995d1446ccaada4

2 files changed, 61 insertions, 21 deletions

diff --git a/src/org/cyanogenmod/themes/provider/util/ProviderUtils.java b/src/org/cyanogenmod/themes/provider/util/ProviderUtils.java
index 065a1b0..ab98530 100644
--- a/src/org/cyanogenmod/themes/provider/util/ProviderUtils.java
+++ b/src/org/cyanogenmod/themes/provider/util/ProviderUtils.java
@@ -127,6 +127,12 @@ public class ProviderUtils {
         return newProjection.toArray(new String[newProjection.size()]);
     }
 
+    public static String modifyDefaultPreviewsSelection(String selection, String[] projection) {
+        String newSelection = modifyPreviewsSelection(selection, projection);
+        newSelection += " AND " + PreviewColumns.COMPONENT_ID + "=0";
+        return newSelection;
+    }
+
     public static String modifyPreviewsSelection(String selection, String[] projection) {
         String newSelection = selection;
         List<String> projectionItems = getPreviewProjectionItems(projection);
diff --git a/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java b/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java
index 01b888a..f10a2f7 100644
--- a/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java
+++ b/src/org/cyanogenmod/themes/provider/util/WallpaperPreviewGenerator.java
@@ -24,10 +24,13 @@ import android.content.res.Resources;
 import android.content.res.ThemeConfig;
 import android.graphics.Bitmap;
 
+import android.text.TextUtils;
 import org.cyanogenmod.themes.provider.R;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.LinkedList;
+import java.util.List;
 
 public class WallpaperPreviewGenerator {
     private static final String WALLPAPER_ASSET_PATH = "wallpapers";
@@ -46,43 +49,74 @@ public class WallpaperPreviewGenerator {
     public WallpaperItems generateWallpaperPreviews(PackageInfo themeInfo)
             throws NameNotFoundException, IOException {
         WallpaperItems items = new WallpaperItems();
+        WallpaperItem item = null;
+        Bitmap preview = null;
         if (themeInfo == null) {
             Resources res = mContext.getPackageManager().getThemedResourcesForApplication("android",
                     ThemeConfig.SYSTEM_DEFAULT);
-            items.wpPreview = items.lsPreview = BitmapUtils.decodeResource(res,
+            item = new WallpaperItem();
+            item.preview = BitmapUtils.decodeResource(res,
                     com.android.internal.R.drawable.default_wallpaper, mPreviewSize, mPreviewSize);
+            item.thumbnail = Bitmap.createScaledBitmap(item.preview, mThumbnailSize, mThumbnailSize,
+                    true);
+            if (item != null) {
+                items.wallpapers.add(item);
+                items.lockscreen = item;
+            }
         } 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);
+            // Get all wallpapers
+            List<String> paths = ThemeUtils.getWallpaperPathList(assets);
+            for (String path : paths) {
+                if (!TextUtils.isEmpty(path)) {
+                    preview = BitmapUtils.getBitmapFromAsset(themeContext, path,
+                            mPreviewSize, mPreviewSize);
+                    item = createWallpaperItems(path, preview);
+                    if (item != null) {
+                        items.wallpapers.add(item);
+                    }
+                }
             }
-            path = ThemeUtils.getLockscreenWallpaperPath(assets);
-            if (path != null) {
-                items.lsPreview = BitmapUtils.getBitmapFromAsset(themeContext, path,
+            // Get the lockscreen
+            String path = ThemeUtils.getLockscreenWallpaperPath(assets);
+            if (!TextUtils.isEmpty(path)) {
+                preview = BitmapUtils.getBitmapFromAsset(themeContext, path,
                         mPreviewSize, mPreviewSize);
+                items.lockscreen = createWallpaperItems(path, preview);
             }
         }
-        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;
     }
 
+    private WallpaperItem createWallpaperItems(String path, Bitmap preview) {
+        if (TextUtils.isEmpty(path) || preview == null) {
+            return null;
+        }
+        WallpaperItem item = new WallpaperItem();
+        item.assetPath = path;
+        item.preview = preview;
+        item.thumbnail = Bitmap.createScaledBitmap(item.preview, mThumbnailSize, mThumbnailSize,
+                true);
+        return item;
+    }
+
+    public class WallpaperItem {
+        public String assetPath;
+        public Bitmap preview;
+        public Bitmap thumbnail;
+    }
+
     public class WallpaperItems {
         // Wallpaper items
-        public Bitmap wpThumbnail;
-        public Bitmap wpPreview;
+        public List<WallpaperItem> wallpapers;
 
-        // Lockscreen wallpaper items
-        public Bitmap lsThumbnail;
-        public Bitmap lsPreview;
+        // Lockscreen wallpaper item
+        public WallpaperItem lockscreen;
+
+        public WallpaperItems() {
+            wallpapers = new LinkedList<WallpaperItem>();
+            lockscreen = null;
+        }
     }
 }