Allow IMEs to extend below nav bar, remove SystemUI veto.

Layout IMEs below the nav bar, offset by bottom padding and
associated guard rectangle with a black background to ensure
they do not appear as islands during transitions.

This makes it safe to remove the SystemUI forced opaque transition
when showing an IME, making the overall transition less expensive,
quicker and smoother overall.

Bug:11058746
Change-Id: I460912ee7c117480c57b947ed31eca330819f32c

1 files changed, 4 insertions, 2 deletions

diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index adbada7..1489881 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -2991,8 +2991,10 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             pf.left = df.left = of.left = cf.left = vf.left = mDockLeft;
             pf.top = df.top = of.top = cf.top = vf.top = mDockTop;
             pf.right = df.right = of.right = cf.right = vf.right = mDockRight;
-            // IM dock windows always go above the nav bar.
-            pf.bottom = df.bottom = of.bottom = cf.bottom = vf.bottom = mStableBottom;
+            // IM dock windows layout below the nav bar...
+            pf.bottom = df.bottom = of.bottom = mRestrictedScreenTop + mRestrictedScreenHeight;
+            // ...with content insets above the nav bar
+            cf.bottom = vf.bottom = mStableBottom;
             // IM dock windows always go to the bottom of the screen.
             attrs.gravity = Gravity.BOTTOM;
             mDockLayer = win.getSurfaceLayer();