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Diffstat (limited to 'src/quick/handlers/qquickpointerhandler_p.h')
| -rw-r--r-- | src/quick/handlers/qquickpointerhandler_p.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/quick/handlers/qquickpointerhandler_p.h b/src/quick/handlers/qquickpointerhandler_p.h new file mode 100644 index 0000000000..24a058275d --- /dev/null +++ b/src/quick/handlers/qquickpointerhandler_p.h @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQUICKPOINTERHANDLER_H +#define QQUICKPOINTERHANDLER_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "qevent.h" + +#include <QtQuick/private/qquickevents_p_p.h> +#include <QtQuick/private/qquickitem_p.h> + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(lcPointerHandlerDispatch) + +class Q_QUICK_PRIVATE_EXPORT QQuickPointerHandler : public QObject +{ + Q_OBJECT + Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged) + Q_PROPERTY(bool active READ active NOTIFY activeChanged) + Q_PROPERTY(QQuickItem * target READ target WRITE setTarget NOTIFY targetChanged) + Q_PROPERTY(QQuickItem * parent READ parentItem CONSTANT) + +public: + explicit QQuickPointerHandler(QObject *parent = 0); + virtual ~QQuickPointerHandler(); + +public: + bool enabled() const { return m_enabled; } + void setEnabled(bool enabled); + + bool active() const { return m_active; } + + QQuickItem *target() const; + void setTarget(QQuickItem *target); + + QQuickItem * parentItem() const { return static_cast<QQuickItem *>(QObject::parent()); } + + void handlePointerEvent(QQuickPointerEvent *event); + +Q_SIGNALS: + void enabledChanged(); + void activeChanged(); + void targetChanged(); + void grabChanged(QQuickEventPoint *point); + void canceled(QQuickEventPoint *point); + +protected: + QQuickPointerEvent *currentEvent() { return m_currentEvent; } + virtual bool wantsPointerEvent(QQuickPointerEvent *event); + virtual void handlePointerEventImpl(QQuickPointerEvent *event); + void setActive(bool active); + virtual void onActiveChanged() { } + virtual void onGrabChanged(QQuickPointerHandler *grabber, QQuickEventPoint::GrabState stateChange, QQuickEventPoint *point); + void setPassiveGrab(QQuickEventPoint *point, bool grab = true); + void setExclusiveGrab(QQuickEventPoint *point, bool grab = true); + void cancelAllGrabs(QQuickEventPoint *point); + QPointF eventPos(const QQuickEventPoint *point) const; + bool parentContains(const QQuickEventPoint *point) const; + +private: + QQuickPointerEvent *m_currentEvent; + QQuickItem *m_target; + bool m_enabled : 1; + bool m_active : 1; + bool m_targetExplicitlySet : 1; + bool m_hadKeepMouseGrab : 1; // some handlers override target()->setKeepMouseGrab(); this remembers previous state + bool m_hadKeepTouchGrab : 1; // some handlers override target()->setKeepTouchGrab(); this remembers previous state + + friend class QQuickEventPoint; + friend class QQuickWindowPrivate; +}; + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QQuickPointerHandler) + +#endif // QQUICKPOINTERHANDLER_H |