Android: Fix QInputMethod's visible property

There are many cases in which finishComposingText is called and it
does not mean the keyboard will be hidden.
Add a check that there are space reserved for the keyboard before
closing it.

This is not helping with floating keyboards, but it's already better.

[ChangeLog] Made QInputMethod's visible more accurate

Task-number: QTBUG-42444
Change-Id: I4d706f1ea5ba2f0f6d3ec1921139317bc4f8dafb
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtInputConnection.java b/src/android/jar/src/org/qtproject/qt5/android/QtInputConnection.java
index 0f3e9083d4..1536d60faa 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtInputConnection.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtInputConnection.java
@@ -40,6 +40,9 @@ import android.view.inputmethod.CompletionInfo;
 import android.view.inputmethod.ExtractedText;
 import android.view.inputmethod.ExtractedTextRequest;
 import android.view.inputmethod.InputMethodManager;
+import android.graphics.Rect;
+import android.app.Activity;
+import android.util.DisplayMetrics;
 
 class QtExtractedText
 {
@@ -80,7 +83,15 @@ class HideKeyboardRunnable implements Runnable {
 
     @Override
     public void run() {
-        QtNative.activityDelegate().setKeyboardVisibility(false, m_hideTimeStamp);
+        // Check that the keyboard is really no longer there.
+        Activity activity = QtNative.activity();
+        Rect r = new Rect();
+        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(r);
+        DisplayMetrics metrics = new DisplayMetrics();
+        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
+        final int kbHeight = metrics.heightPixels - r.bottom;
+        if (kbHeight < 100)
+            QtNative.activityDelegate().setKeyboardVisibility(false, m_hideTimeStamp);
     }
 }