Merge "Tweak wallpaper restore acceptance heuristics" into lmp-dev

        mFiles = files;

        mKeys = keys;

        WallpaperManager wpm;

        wpm = (WallpaperManager) context.getSystemService(Context.WALLPAPER_SERVICE);

        mDesiredMinWidth = (double) wpm.getDesiredMinimumWidth();

        mDesiredMinHeight = (double) wpm.getDesiredMinimumHeight();

        if (mDesiredMinWidth <= 0 || mDesiredMinHeight <= 0) {

            WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

            Display d = wm.getDefaultDisplay();

            Point size = new Point();

        final WindowManager wm =

                (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

        final WallpaperManager wpm =

                (WallpaperManager) context.getSystemService(Context.WALLPAPER_SERVICE);

        final Display d = wm.getDefaultDisplay();

        final Point size = new Point();

        d.getSize(size);

        mDesiredMinWidth = size.x;

        mDesiredMinHeight = (double) wpm.getDesiredMinimumHeight();

        if (mDesiredMinHeight <= 0) {

            mDesiredMinHeight = size.y;

        }

                    if (DEBUG) Slog.d(TAG, "Restoring wallpaper image w=" + options.outWidth

                            + " h=" + options.outHeight);

                    // How much does the image differ from our preference?  The threshold

                    // here is set to accept any image larger than our target, because

                    // scaling down is acceptable; but to reject images that are deemed

                    // "too small" to scale up attractively.  The value 1.33 is just barely

                    // too low to pass Nexus 1 or Droid wallpapers for use on a Xoom, but

                    // will pass anything relatively larger.

                    double widthRatio = mDesiredMinWidth / options.outWidth;

                    double heightRatio = mDesiredMinHeight / options.outHeight;

                    if (widthRatio > 0 && widthRatio < 1.33

                    // We accept any wallpaper that is at least as wide as our preference

                    // (i.e. wide enough to fill the screen), and is within a comfortable

                    // factor of the target height, to avoid significant clipping/scaling/

                    // letterboxing.

                    final double heightRatio = mDesiredMinHeight / options.outHeight;

                    if (options.outWidth >= mDesiredMinWidth

                            && heightRatio > 0 && heightRatio < 1.33) {

                        // sufficiently close to our resolution; go ahead and use it

                        Slog.d(TAG, "Applying restored wallpaper image.");

                        // since it does not exist anywhere other than the private wallpaper

                        // file.

                    } else {

                        Slog.i(TAG, "Dimensions too far off; using default wallpaper. wr=" + widthRatio

                                + " hr=" + heightRatio);

                        Slog.i(TAG, "Restored image dimensions (w="

                                + options.outWidth + ", h=" + options.outHeight

                                + ") too far off target (tw="

                                + mDesiredMinWidth + ", th=" + mDesiredMinHeight

                                + "); falling back to default wallpaper.");

                        f.delete();

                    }

                }