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Diffstat (limited to 'src/declarative/util/qmlstate.h')
-rw-r--r-- | src/declarative/util/qmlstate.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/declarative/util/qmlstate.h b/src/declarative/util/qmlstate.h new file mode 100644 index 0000000..3e6727d --- /dev/null +++ b/src/declarative/util/qmlstate.h @@ -0,0 +1,175 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QMLSTATE_H +#define QMLSTATE_H + +#include <QtCore/qobject.h> +#include <qfxglobal.h> +#include <gfxtimeline.h> +#include <qml.h> +#include <QSequentialAnimationGroup> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) + +class ActionEvent; +class QmlBindableValue; +class Action +{ +public: + Action(); + + QmlMetaProperty property; + QVariant fromValue; + QVariant toValue; + QString fromBinding; + QString toBinding; + QmlBindableValue *bv; + ActionEvent *event; + bool actionDone; +}; + +class ActionEvent +{ +public: + virtual ~ActionEvent(); + virtual QString name() const; + virtual void execute(); +}; + +class RevertAction +{ +public: + RevertAction(const Action &a, bool from = true) : bv(0) + { + property = a.property; + if (from) { + value = a.fromValue; + binding = a.fromBinding; + } else { + value = a.toValue; + binding = a.toBinding; + } + bv = a.bv; + } + + QmlMetaProperty property; + QVariant value; + QString binding; + QmlBindableValue *bv; +}; + +class QmlStateGroup; +class Q_DECLARATIVE_EXPORT QmlStateOperation : public QObject +{ + Q_OBJECT +public: + QmlStateOperation(QObject *parent = 0) + : QObject(parent) {} + typedef QList<Action> ActionList; + typedef QList<RevertAction> RevertActionList; + + virtual ActionList actions(); + +protected: + QmlStateOperation(QObjectPrivate &dd, QObject *parent = 0); +}; +QML_DECLARE_TYPE(QmlStateOperation); + +typedef QmlStateOperation::ActionList QmlStateActions; + +class QmlTransition; +class QmlTransitionPrivate; +class QmlStatePrivate; +class Q_DECLARATIVE_EXPORT QmlState : public QObject +{ + Q_OBJECT + + Q_PROPERTY(QString name READ name WRITE setName); + Q_PROPERTY(QmlBindableValue *when READ when WRITE setWhen); + Q_PROPERTY(QString extends READ extends WRITE setExtends); + Q_PROPERTY(QmlList<QmlStateOperation *>* operations READ operations); + Q_CLASSINFO("DefaultProperty", "operations"); + +public: + QmlState(QObject *parent=0); + virtual ~QmlState(); + + QString name() const; + void setName(const QString &); + + /*'when' is a QmlBindableValue to limit state changes oscillation + due to the unpredictable order of evaluation of bound expressions*/ + bool isWhenKnown() const; + QmlBindableValue *when() const; + void setWhen(QmlBindableValue *); + + QString extends() const; + void setExtends(const QString &); + + QmlList<QmlStateOperation *> *operations(); + QmlState &operator<<(QmlStateOperation *); + + void apply(QmlStateGroup *, QmlTransition *, QmlState *revert); + void cancel(); + + QmlStateGroup *stateGroup() const; + void setStateGroup(QmlStateGroup *); + +Q_SIGNALS: + void completed(); + +private: + Q_DECLARE_PRIVATE(QmlState) + Q_DISABLE_COPY(QmlState) + friend class QmlTransitionPrivate; +}; +QML_DECLARE_TYPE(QmlState); + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QMLSTATE_H |