diff options
| -rw-r--r-- | core/java/android/app/WallpaperColors.java | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/core/java/android/app/WallpaperColors.java b/core/java/android/app/WallpaperColors.java index a34a50c4b7b0..be1d8b8ad7d3 100644 --- a/core/java/android/app/WallpaperColors.java +++ b/core/java/android/app/WallpaperColors.java @@ -213,9 +213,17 @@ public final class WallpaperColors implements Parcelable { .resizeBitmapArea(MAX_WALLPAPER_EXTRACTION_AREA) .generate(); } else { + // in any case, always use between 5 and 128 clusters + int minClusters = 5; + int maxClusters = 128; + + // if the bitmap is very small, use bitmapArea/16 clusters instead of 128 + int minPixelsPerCluster = 16; + int numberOfColors = Math.max(minClusters, + Math.min(maxClusters, bitmapArea / minPixelsPerCluster)); palette = Palette .from(bitmap, new CelebiQuantizer()) - .maximumColorCount(128) + .maximumColorCount(numberOfColors) .resizeBitmapArea(MAX_WALLPAPER_EXTRACTION_AREA) .generate(); } |