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author | Mario Bertschler <bmario@google.com> | 2017-01-30 17:05:24 -0800 |
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committer | Mario Bertschler <bmario@google.com> | 2017-05-03 10:32:57 -0700 |
commit | 48198d004af64d0d7c8b86bc243087f68dc374c9 (patch) | |
tree | 503173ab33803b465990dff9ed62a8731d5f7e80 /src/com/android/launcher3/Utilities.java | |
parent | 2526ba8215976432806c69c468f7b556e7877513 (diff) | |
download | android_packages_apps_Trebuchet-48198d004af64d0d7c8b86bc243087f68dc374c9.tar.gz android_packages_apps_Trebuchet-48198d004af64d0d7c8b86bc243087f68dc374c9.tar.bz2 android_packages_apps_Trebuchet-48198d004af64d0d7c8b86bc243087f68dc374c9.zip |
All Apps transition with gradient and scrim.
The transition is behind a feature flag and
turned off by default.
Change-Id: I155840ba82b5a573d874376797db5f739a52d706
Diffstat (limited to 'src/com/android/launcher3/Utilities.java')
-rw-r--r-- | src/com/android/launcher3/Utilities.java | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java index 776ec2f62..54e7dd2bc 100644 --- a/src/com/android/launcher3/Utilities.java +++ b/src/com/android/launcher3/Utilities.java @@ -28,6 +28,7 @@ import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.graphics.Bitmap; +import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; @@ -645,4 +646,28 @@ public final class Utilities { hashSet.add(elem); return hashSet; } + + /** + * @return creates a new alpha mask bitmap out of an existing bitmap + */ + public static Bitmap convertToAlphaMask(Bitmap b, float applyAlpha) { + Bitmap a = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.ALPHA_8); + Canvas c = new Canvas(a); + Paint paint = new Paint(); + paint.setAlpha((int) (255f * applyAlpha)); + c.drawBitmap(b, 0f, 0f, paint); + return a; + } + + /** + * @return a new white 1x1 bitmap with ALPHA_8 + */ + public static Bitmap createOnePixBitmap() { + Bitmap a = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8); + Canvas c = new Canvas(a); + Paint paint = new Paint(); + paint.setColor(Color.WHITE); + c.drawPaint(paint); + return a; + } } |