Initial import of statemachine branch from the old kinetic repository

1 files changed, 89 insertions, 0 deletions

diff --git a/examples/animation/research/memberfunctions/qvalueanimation.h b/examples/animation/research/memberfunctions/qvalueanimation.h
new file mode 100644
index 0000000..a4aa213
--- /dev/null
+++ b/examples/animation/research/memberfunctions/qvalueanimation.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVALUEANIMATION_H
+#define QVALUEANIMATION_H
+
+#if defined(QT_EXPERIMENTAL_SOLUTION)
+# include "qvariantanimation.h"
+#else
+# include <QtCore/qvariantanimation.h>
+#endif
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QGraphicsItem;
+class QValueAnimationPrivate;
+
+QT_MODULE(Gui)
+
+struct AbstractProperty {
+    virtual void write(const QVariant &value) = 0;
+    virtual QVariant read() const = 0;
+};
+
+# define CALL_MEMBER_FN(object,ptrToMember)  ((object)->*(ptrToMember))
+template <typename Target, typename T>
+class MemberFunctionProperty : public AbstractProperty {
+public:
+    typedef void (Target::*RefWrite)(const T &);
+    typedef T (Target::*ValRead)(void) const;
+
+    MemberFunctionProperty(Target *target, ValRead readFunc, RefWrite writeFunc) 
+        : m_target(target), m_readFn(readFunc), m_writeFn(writeFunc) {}
+
+    virtual void write(const QVariant &value) {
+        CALL_MEMBER_FN(m_target, m_writeFn)(qVariantValue<T>(value));
+    }
+
+    virtual QVariant read() const {
+        if (m_readFn)
+            return qVariantFromValue<T>(CALL_MEMBER_FN(m_target, m_readFn)());
+        return QVariant();
+    }
+
+private:
+    Target *m_target;
+    ValRead m_readFn;
+    RefWrite m_writeFn;
+};
+
+
+class QValueAnimation : public QVariantAnimation
+{
+    Q_OBJECT
+
+public:
+    QValueAnimation(QObject *parent = 0);
+    ~QValueAnimation();
+
+    template <typename Target, typename T>
+    void setMemberFunction(Target *target, 
+                            T (Target::*readFunc)(void) const,      // ### useValRead typedef
+                            void (Target::*writeFunc)(const T &)    // ### use RefWrite typedef
+                            ) {
+        // ### ownership of MemberFunctionProperty
+        AbstractProperty *animProp = new MemberFunctionProperty<Target, T>(target, readFunc, writeFunc);
+        setProperty(animProp);
+    }
+
+    void updateCurrentValue(const QVariant &value);
+    void updateState(QAbstractAnimation::State oldState, QAbstractAnimation::State newState);
+    void setProperty(AbstractProperty *animProp);
+
+private:
+    Q_DISABLE_COPY(QValueAnimation);
+    Q_DECLARE_PRIVATE(QValueAnimation);
+};
+
+#endif // QVALUEANIMATION_H