commit c6e84a13404c7884f4a0bc384fb13f276b11a267
author Ahan Wu <ahanwu@google.com> Fri Sep 06 19:19:05 2019 +0800
committer Ahan Wu <ahanwu@google.com> Fri Sep 06 19:19:05 2019 +0800
tree 991d570ece47771c362784eff628f408f76e4b45
parent b1af47bec8dd6d771478705e4b03d5c1d45d13dc

Fix default wallpaper transition issue

The dimension of default wallpaper is only 1243x1024, this causes the
transition looks not smooth.

Bug: 139297053
Test: Manually kill current wallpaper serveral times.
Test: After fallback wallpaper appears, look the transition.
Change-Id: Ie3eb1a61753cf30210414139c9af492b60c7334b

packages/SystemUI/src/com/android/systemui/glwallpaper/ImageWallpaperRenderer.java

diff --git a/packages/SystemUI/src/com/android/systemui/glwallpaper/ImageWallpaperRenderer.java b/packages/SystemUI/src/com/android/systemui/glwallpaper/ImageWallpaperRenderer.java
index 7b22a49..2960634 100644
--- a/packages/SystemUI/src/com/android/systemui/glwallpaper/ImageWallpaperRenderer.java
+++ b/packages/SystemUI/src/com/android/systemui/glwallpaper/ImageWallpaperRenderer.java
@@ -111,7 +111,12 @@
             mBitmap = mWallpaperManager.getBitmap();
             mWallpaperManager.forgetLoadedWallpaper();
             if (mBitmap != null) {
-                mSurfaceSize.set(0, 0, mBitmap.getWidth(), mBitmap.getHeight());
+                float scale = (float) mScissor.height() / mBitmap.getHeight();
+                int surfaceHeight = Math.max(mScissor.height(), mBitmap.getHeight());
+                int surfaceWidth = scale > 1f
+                        ? Math.round(mBitmap.getWidth() * scale)
+                        : mBitmap.getWidth();
+                mSurfaceSize.set(0, 0, surfaceWidth, surfaceHeight);
             }
         }
         return mBitmap != null;