Supporting custom wallpaper previews in Customize
Change-Id: Ibc16e67ca49a50032d9fcb7d5bb8dcccd7bf4397
diff --git a/src/com/android/launcher2/CustomizePagedView.java b/src/com/android/launcher2/CustomizePagedView.java
index e9a82d6..91a3bdb 100644
--- a/src/com/android/launcher2/CustomizePagedView.java
+++ b/src/com/android/launcher2/CustomizePagedView.java
@@ -18,21 +18,29 @@
import com.android.launcher.R;
+import org.xmlpull.v1.XmlPullParser;
+
+import android.app.WallpaperManager;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
+import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
+import android.content.res.XmlResourceParser;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Bitmap.Config;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
+import android.util.Slog;
+import android.util.TypedValue;
+import android.util.Xml;
import android.view.ActionMode;
import android.view.Gravity;
import android.view.LayoutInflater;
@@ -48,6 +56,7 @@
import java.util.Comparator;
import java.util.List;
+
public class CustomizePagedView extends PagedView
implements View.OnLongClickListener, View.OnClickListener, View.OnTouchListener,
DragSource, ActionMode.Callback {
@@ -269,7 +278,8 @@
// get the list of wallpapers
Intent wallpapersIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
- mWallpaperList = mPackageManager.queryIntentActivities(wallpapersIntent, 0);
+ mWallpaperList = mPackageManager.queryIntentActivities(wallpapersIntent,
+ PackageManager.GET_META_DATA);
Collections.sort(mWallpaperList, resolveInfoComparator);
invalidatePageDataAndIconCache();
@@ -563,6 +573,63 @@
mCanvas.restore();
}
+ /*
+ * This method fetches an xml file specified in the manifest identified by
+ * WallpaperManager.WALLPAPER_PREVIEW_META_DATA). The xml file specifies
+ * an image which will be used as the wallpaper preview for an activity
+ * which responds to ACTION_SET_WALLPAPER. This image is returned and used
+ * in the customize drawer.
+ */
+ private Drawable parseWallpaperPreviewXml(ComponentName component, ResolveInfo ri) {
+ Drawable d = null;
+
+ ActivityInfo activityInfo = ri.activityInfo;
+ XmlResourceParser parser = null;
+ try {
+ parser = activityInfo.loadXmlMetaData(mPackageManager,
+ WallpaperManager.WALLPAPER_PREVIEW_META_DATA);
+ if (parser == null) {
+ Slog.w(TAG, "No " + WallpaperManager.WALLPAPER_PREVIEW_META_DATA + " meta-data for "
+ + "wallpaper provider '" + component + '\'');
+ return null;
+ }
+
+ AttributeSet attrs = Xml.asAttributeSet(parser);
+
+ int type;
+ while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
+ && type != XmlPullParser.START_TAG) {
+ // drain whitespace, comments, etc.
+ }
+
+ String nodeName = parser.getName();
+ if (!"wallpaper-preview".equals(nodeName)) {
+ Slog.w(TAG, "Meta-data does not start with wallpaper-preview tag for "
+ + "wallpaper provider '" + component + '\'');
+ return null;
+ }
+
+ // If metaData was null, we would have returned earlier when getting
+ // the parser No need to do the check here
+ Resources res = mPackageManager.getResourcesForApplication(
+ activityInfo.applicationInfo);
+
+ TypedArray sa = res.obtainAttributes(attrs,
+ com.android.internal.R.styleable.WallpaperPreviewInfo);
+
+ TypedValue value = sa.peekValue(
+ com.android.internal.R.styleable.WallpaperPreviewInfo_staticWallpaperPreview);
+ if (value == null) return null;
+
+ return res.getDrawable(value.resourceId);
+ } catch (Exception e) {
+ Slog.w(TAG, "XML parsing failed for wallpaper provider '" + component + '\'', e);
+ return null;
+ } finally {
+ if (parser != null) parser.close();
+ }
+ }
+
/**
* This method will extract the preview image specified by the wallpaper source provider (if it
* exists) otherwise, it will try to generate a default image preview.
@@ -578,21 +645,31 @@
int width = (int) (dim * sScaleFactor);
int height = (int) (dim * sScaleFactor);
final Bitmap bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
- final Drawable background = resources.getDrawable(R.drawable.default_widget_preview);
+
+ Drawable background = parseWallpaperPreviewXml(
+ new ComponentName(info.activityInfo.packageName, info.activityInfo.name), info);
+ boolean foundCustomDrawable = background != null;
+
+ if (!foundCustomDrawable) {
+ background = resources.getDrawable(R.drawable.default_widget_preview);
+ }
+
renderDrawableToBitmap(background, bitmap, 0, 0, width, height);
- // Draw the icon flush left
- try {
- final IconCache iconCache =
- ((LauncherApplication) mLauncher.getApplication()).getIconCache();
- Drawable icon = new FastBitmapDrawable(Utilities.createIconBitmap(
- iconCache.getFullResIcon(info, mPackageManager), mContext));
+ // If we don't have a custom icon, we use the app icon on the default background
+ if (!foundCustomDrawable) {
+ try {
+ final IconCache iconCache =
+ ((LauncherApplication) mLauncher.getApplication()).getIconCache();
+ Drawable icon = new FastBitmapDrawable(Utilities.createIconBitmap(
+ iconCache.getFullResIcon(info, mPackageManager), mContext));
- final int iconSize = minDim / 2;
- final int offset = iconSize / 4;
- renderDrawableToBitmap(icon, null, offset, offset, iconSize, iconSize);
- } catch (Resources.NotFoundException e) {
- // if we can't find the icon, then just don't draw it
+ final int iconSize = minDim / 2;
+ final int offset = iconSize / 4;
+ renderDrawableToBitmap(icon, null, offset, offset, iconSize, iconSize);
+ } catch (Resources.NotFoundException e) {
+ // if we can't find the icon, then just don't draw it
+ }
}
FastBitmapDrawable drawable = new FastBitmapDrawable(bitmap);