From 80f52812f2651e6d427bb3dd2e338b60fb25d48b Mon Sep 17 00:00:00 2001
From: BogDan Vatra <bogdan@kdab.com>
Date: Fri, 15 Dec 2017 15:56:25 +0200
Subject: Hide cursor handle after ~4s on inactivity

When the VK is hidden keep cursor handle the cursor handle visible for
~4s after user last activity.

Task-number: QTBUG-66806
Change-Id: I8122c5886efaeee86bb691ad971aa7a3e3d7f8e1
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
---
 src/plugins/platforms/android/qandroidinputcontext.cpp | 16 ++++++++++++++++
 src/plugins/platforms/android/qandroidinputcontext.h   |  2 ++
 2 files changed, 18 insertions(+)

(limited to 'src/plugins/platforms/android')

diff --git a/src/plugins/platforms/android/qandroidinputcontext.cpp b/src/plugins/platforms/android/qandroidinputcontext.cpp
index d6da1998cf..430eaf638b 100644
--- a/src/plugins/platforms/android/qandroidinputcontext.cpp
+++ b/src/plugins/platforms/android/qandroidinputcontext.cpp
@@ -471,6 +471,13 @@ QAndroidInputContext::QAndroidInputContext()
             updateSelectionHandles();
         }
     });
+    m_hideCursorHandleTimer.setInterval(4000);
+    m_hideCursorHandleTimer.setSingleShot(true);
+    m_hideCursorHandleTimer.setTimerType(Qt::VeryCoarseTimer);
+    connect(&m_hideCursorHandleTimer, &QTimer::timeout, this, [this]{
+        m_handleMode = Hidden;
+        updateSelectionHandles();
+    });
 }
 
 QAndroidInputContext::~QAndroidInputContext()
@@ -590,6 +597,10 @@ void QAndroidInputContext::updateSelectionHandles()
         QPoint editMenuPoint(curRect.center().x(), curRect.top());
         QtAndroidInput::updateHandles(m_handleMode, cursorPoint * pixelDensity,
                                       editMenuPoint * pixelDensity);
+        m_handleMode |= ShowCursor;
+        // The VK is hidden, reset the timer
+        if (m_hideCursorHandleTimer.isActive())
+            m_hideCursorHandleTimer.start();
         return;
     }
 
@@ -603,6 +614,7 @@ void QAndroidInputContext::updateSelectionHandles()
     QPoint righPoint(rightRect.bottomRight().toPoint() * pixelDensity);
     QtAndroidInput::updateHandles(ShowSelection, leftPoint, righPoint,
                                   query.value(Qt::ImCurrentSelection).toString().isRightToLeft());
+    m_hideCursorHandleTimer.stop();
 }
 
 /*
@@ -690,6 +702,8 @@ void QAndroidInputContext::touchDown(int x, int y)
     if (m_focusObject && inputItemRectangle().contains(x, y)) {
         // If the user touch the input rectangle, we can show the cursor handle
         m_handleMode = ShowCursor;
+        // The VK will appear in a moment, stop the timer
+        m_hideCursorHandleTimer.stop();
         QMetaObject::invokeMethod(this, "updateSelectionHandles", Qt::QueuedConnection);
     }
 }
@@ -747,6 +761,8 @@ void QAndroidInputContext::hideSelectionHandles()
     if (m_handleMode & ShowSelection) {
         m_handleMode = Hidden;
         updateSelectionHandles();
+    } else {
+        m_hideCursorHandleTimer.start();
     }
 }
 
diff --git a/src/plugins/platforms/android/qandroidinputcontext.h b/src/plugins/platforms/android/qandroidinputcontext.h
index a6e22fa4f7..1b351f16bd 100644
--- a/src/plugins/platforms/android/qandroidinputcontext.h
+++ b/src/plugins/platforms/android/qandroidinputcontext.h
@@ -44,6 +44,7 @@
 #include <qpa/qplatforminputcontext.h>
 #include <jni.h>
 #include <qevent.h>
+#include <QTimer>
 
 QT_BEGIN_NAMESPACE
 
@@ -157,6 +158,7 @@ private:
     HandleModes m_handleMode;
     QAtomicInt m_batchEditNestingLevel;
     QObject *m_focusObject;
+    QTimer m_hideCursorHandleTimer;
 };
 Q_DECLARE_OPERATORS_FOR_FLAGS(QAndroidInputContext::HandleModes)
 QT_END_NAMESPACE
-- 
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