Merge "DO NOT MERGE : Backport I5723f627ce323b0d12b Reduce window resizing during IME transition" into jb-dev

Author: satok16

core/java/android/view/WindowManagerPolicy.java

@@ -1099,6 +1099,13 @@ interface OnKeyguardExitResult {
      */
     public void stopScreenSaver();
 
+    /**
+     * Set the last used input method window state. This state is used to make IME transition
+     * smooth.
+     * @hide
+     */
+    public void setLastInputMethodWindowLw(WindowState ime, WindowState target);
+
     /**
      * Print the WindowManagerPolicy's state into the given stream.
      *

policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

@@ -324,6 +324,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     volatile boolean mPowerKeyHandled; // accessed from input reader and handler thread
     boolean mPendingPowerKeyUpCanceled;
     Handler mHandler;
+    WindowState mLastInputMethodWindow = null;
+    WindowState mLastInputMethodTargetWindow = null;
 
     static final int RECENT_APPS_BEHAVIOR_SHOW_OR_DISMISS = 0;
     static final int RECENT_APPS_BEHAVIOR_EXIT_TOUCH_MODE_AND_SHOW = 1;
@@ -2395,6 +2397,14 @@ public void layoutWindowLw(WindowState win, WindowManager.LayoutParams attrs,
         if (win == mStatusBar || win == mNavigationBar) {
             return;
         }
+        final boolean needsToOffsetInputMethodTarget =
+                (win == mLastInputMethodTargetWindow && mLastInputMethodWindow != null);
+        if (needsToOffsetInputMethodTarget) {
+            if (DEBUG_LAYOUT) {
+                Slog.i(TAG, "Offset ime target window by the last ime window state");
+            }
+            offsetInputMethodWindowLw(mLastInputMethodWindow);
+        }
 
         final int fl = attrs.flags;
         final int sim = attrs.softInputMode;
@@ -2672,22 +2682,27 @@ public void layoutWindowLw(WindowState win, WindowManager.LayoutParams attrs,
         // Dock windows carve out the bottom of the screen, so normal windows
         // can't appear underneath them.
         if (attrs.type == TYPE_INPUT_METHOD && !win.getGivenInsetsPendingLw()) {
-            int top = win.getContentFrameLw().top;
-            top += win.getGivenContentInsetsLw().top;
-            if (mContentBottom > top) {
-                mContentBottom = top;
-            }
-            top = win.getVisibleFrameLw().top;
-            top += win.getGivenVisibleInsetsLw().top;
-            if (mCurBottom > top) {
-                mCurBottom = top;
-            }
-            if (DEBUG_LAYOUT) Log.v(TAG, "Input method: mDockBottom="
-                    + mDockBottom + " mContentBottom="
-                    + mContentBottom + " mCurBottom=" + mCurBottom);
+            setLastInputMethodWindowLw(null, null);
+            offsetInputMethodWindowLw(win);
         }
     }
 
+    private void offsetInputMethodWindowLw(WindowState win) {
+        int top = win.getContentFrameLw().top;
+        top += win.getGivenContentInsetsLw().top;
+        if (mContentBottom > top) {
+            mContentBottom = top;
+        }
+        top = win.getVisibleFrameLw().top;
+        top += win.getGivenVisibleInsetsLw().top;
+        if (mCurBottom > top) {
+            mCurBottom = top;
+        }
+        if (DEBUG_LAYOUT) Log.v(TAG, "Input method: mDockBottom="
+                + mDockBottom + " mContentBottom="
+                + mContentBottom + " mCurBottom=" + mCurBottom);
+    }
+
     /** {@inheritDoc} */
     @Override
     public void finishLayoutLw() {
@@ -4184,6 +4199,12 @@ public boolean hasNavigationBar() {
         return mHasNavigationBar;
     }
 
+    @Override
+    public void setLastInputMethodWindowLw(WindowState ime, WindowState target) {
+        mLastInputMethodWindow = ime;
+        mLastInputMethodTargetWindow = target;
+    }
+
     public void dump(String prefix, FileDescriptor fd, PrintWriter pw, String[] args) {
         pw.print(prefix); pw.print("mSafeMode="); pw.print(mSafeMode);
                 pw.print(" mSystemReady="); pw.print(mSystemReady);

services/java/com/android/server/wm/WindowManagerService.java

@@ -2262,6 +2262,7 @@ public int addWindow(Session session, IWindow client, int seq,
             boolean imMayMove = true;
 
             if (attrs.type == TYPE_INPUT_METHOD) {
+                win.mGivenInsetsPending = true;
                 mInputMethodWindow = win;
                 addInputMethodWindowToListLocked(win);
                 imMayMove = false;
@@ -3422,6 +3423,9 @@ public void removeWindowToken(IBinder token) {
         synchronized(mWindowMap) {
             WindowToken wtoken = mTokenMap.remove(token);
             if (wtoken != null) {
+                if (wtoken.windowType == TYPE_INPUT_METHOD && mInputMethodWindow != null) {
+                    mPolicy.setLastInputMethodWindowLw(mInputMethodWindow, mInputMethodTarget);
+                }
                 boolean delayed = false;
                 if (!wtoken.hidden) {
                     wtoken.hidden = true;