QKeyboardInput: add focus property

Like Item focus in QtQuick the goal is to change the current QKeyboardInput
focus for a given QKeyboardController when focus is set to true. Only a single
QKeyboardInput for a given QKeyboardController can have its focus set to true
at a given time. Setting focus to true should requests a focus change to the
backend.

Change-Id: Idaa42192076a6b67221fb112deb53642bfc2dd93
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

3 files changed, 21 insertions, 0 deletions

diff --git a/src/input/qkeyboardinput.cpp b/src/input/qkeyboardinput.cpp
index 1fc36f84c..9a531c77f 100644
--- a/src/input/qkeyboardinput.cpp
+++ b/src/input/qkeyboardinput.cpp
@@ -50,6 +50,7 @@ namespace Qt3D {
 QKeyboardInputPrivate::QKeyboardInputPrivate(QKeyboardInput *qq)
     : QComponentPrivate(qq)
     , m_controller(Q_NULLPTR)
+    , m_focus(false)
 {
 }
 
@@ -87,6 +88,21 @@ QKeyboardController *QKeyboardInput::controller() const
     return d->m_controller;
 }
 
+bool QKeyboardInput::focus() const
+{
+    Q_D(const QKeyboardInput);
+    return d->m_focus;
+}
+
+void QKeyboardInput::setFocus(bool focus)
+{
+    Q_D(QKeyboardInput);
+    if (d->m_focus != focus) {
+        d->m_focus = focus;
+        emit focusChanged();
+    }
+}
+
 } // Qt3D
 
 QT_END_NAMESPACE
diff --git a/src/input/qkeyboardinput.h b/src/input/qkeyboardinput.h
index a6786fe71..b788a0d54 100644
--- a/src/input/qkeyboardinput.h
+++ b/src/input/qkeyboardinput.h
@@ -56,14 +56,18 @@ class QT3DINPUTSHARED_EXPORT QKeyboardInput : public QComponent
 {
     Q_OBJECT
     Q_PROPERTY(Qt3D::QKeyboardController *controller READ controller WRITE setController NOTIFY controllerChanged)
+    Q_PROPERTY(bool focus READ focus WRITE setFocus NOTIFY focusChanged)
 public:
     explicit QKeyboardInput(QNode *parent = 0);
 
     void setController(QKeyboardController *controller);
     QKeyboardController *controller() const;
+    bool focus() const;
+    void setFocus(bool focus);
 
 Q_SIGNALS:
     void controllerChanged();
+    void focusChanged();
 
 protected:
     QKeyboardInput(QKeyboardInputPrivate &dd, QNode *parent = 0);
diff --git a/src/input/qkeyboardinput_p.h b/src/input/qkeyboardinput_p.h
index af0183480..b97150827 100644
--- a/src/input/qkeyboardinput_p.h
+++ b/src/input/qkeyboardinput_p.h
@@ -58,6 +58,7 @@ public:
 
     Q_DECLARE_PUBLIC(QKeyboardInput)
     QKeyboardController *m_controller;
+    bool m_focus;
 };
 
 } // Qt3D