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/****************************************************************************
**
** Copyright (C) 2016 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 QQUICKITEMCHANGELISTENER_P_H
#define QQUICKITEMCHANGELISTENER_P_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 <QtCore/qglobal.h>
QT_BEGIN_NAMESPACE
class QRectF;
class QQuickItem;
class QQuickAnchorsPrivate;
class QQuickGeometryChange
{
public:
enum Kind: int {
Nothing = 0x00,
X = 0x01,
Y = 0x02,
Width = 0x04,
Height = 0x08,
Size = Width | Height,
All = X | Y | Size
};
QQuickGeometryChange(int change = Nothing)
: kind(change)
{}
bool noChange() const { return kind == Nothing; }
bool anyChange() const { return !noChange(); }
bool xChange() const { return kind & X; }
bool yChange() const { return kind & Y; }
bool widthChange() const { return kind & Width; }
bool heightChange() const { return kind & Height; }
bool positionChange() const { return xChange() || yChange(); }
bool sizeChange() const { return widthChange() || heightChange(); }
bool horizontalChange() const { return xChange() || widthChange(); }
bool verticalChange() const { return yChange() || heightChange(); }
void setXChange(bool enabled) { set(X, enabled); }
void setYChange(bool enabled) { set(Y, enabled); }
void setWidthChange(bool enabled) { set(Width, enabled); }
void setHeightChange(bool enabled) { set(Height, enabled); }
void setSizeChange(bool enabled) { set(Size, enabled); }
void setAllChanged(bool enabled) { set(All, enabled); }
void setHorizontalChange(bool enabled) { set(X | Width, enabled); }
void setVerticalChange(bool enabled) { set(Y | Height, enabled); }
void set(int bits, bool enabled)
{
if (enabled) {
kind |= bits;
} else {
kind &= ~bits;
}
}
bool matches(QQuickGeometryChange other) const { return kind & other.kind; }
private:
int kind;
};
#define QT_QUICK_NEW_GEOMETRY_CHANGED_HANDLING
class QQuickItemChangeListener
{
public:
virtual ~QQuickItemChangeListener() {}
virtual void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF & /* oldGeometry */) {}
virtual void itemSiblingOrderChanged(QQuickItem *) {}
virtual void itemVisibilityChanged(QQuickItem *) {}
virtual void itemEnabledChanged(QQuickItem *) {}
virtual void itemOpacityChanged(QQuickItem *) {}
virtual void itemDestroyed(QQuickItem *) {}
virtual void itemChildAdded(QQuickItem *, QQuickItem * /* child */ ) {}
virtual void itemChildRemoved(QQuickItem *, QQuickItem * /* child */ ) {}
virtual void itemParentChanged(QQuickItem *, QQuickItem * /* parent */ ) {}
virtual void itemRotationChanged(QQuickItem *) {}
virtual void itemImplicitWidthChanged(QQuickItem *) {}
virtual void itemImplicitHeightChanged(QQuickItem *) {}
virtual QQuickAnchorsPrivate *anchorPrivate() { return nullptr; }
};
QT_END_NAMESPACE
#endif // QQUICKITEMCHANGELISTENER_P_H
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