/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
** All rights reserved. | |
** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtGui module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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 1.1, 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#ifndef QGRAPHICSLAYOUT_P_H | |
#define QGRAPHICSLAYOUT_P_H | |
// | |
// W A R N I N G | |
// ------------- | |
// | |
// This file is not part of the Qt API. It exists for the convenience | |
// of other Qt classes. This header file may change from version to | |
// version without notice, or even be removed. | |
// | |
// We mean it. | |
// | |
#include <QtCore/qglobal.h> | |
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW | |
#include "qgraphicslayout.h" | |
#include "qgraphicslayoutitem_p.h" | |
#include <QtGui/qstyle.h> | |
#include <QtGui/qwidget.h> | |
#include <QtGui/qstyleoption.h> | |
QT_BEGIN_NAMESPACE | |
class QGraphicsLayoutItem; | |
class QGraphicsWidget; | |
#ifdef QT_DEBUG | |
inline bool qt_graphicsLayoutDebug() | |
{ | |
static int checked_env = -1; | |
if(checked_env == -1) | |
checked_env = !!qgetenv("QT_GRAPHICSLAYOUT_DEBUG").toInt(); | |
return checked_env; | |
} | |
#endif | |
class QLayoutStyleInfo | |
{ | |
public: | |
inline QLayoutStyleInfo() { invalidate(); } | |
inline QLayoutStyleInfo(QStyle *style, QWidget *widget) | |
: m_valid(true), m_style(style), m_widget(widget) | |
{ | |
Q_ASSERT(style); | |
if (widget) //### | |
m_styleOption.initFrom(widget); | |
m_defaultSpacing[0] = style->pixelMetric(QStyle::PM_LayoutHorizontalSpacing); | |
m_defaultSpacing[1] = style->pixelMetric(QStyle::PM_LayoutVerticalSpacing); | |
} | |
inline void invalidate() { m_valid = false; m_style = 0; m_widget = 0; } | |
inline QStyle *style() const { return m_style; } | |
inline QWidget *widget() const { return m_widget; } | |
inline bool operator==(const QLayoutStyleInfo &other) | |
{ return m_style == other.m_style && m_widget == other.m_widget; } | |
inline bool operator!=(const QLayoutStyleInfo &other) | |
{ return !(*this == other); } | |
inline void setDefaultSpacing(Qt::Orientation o, qreal spacing){ | |
if (spacing >= 0) | |
m_defaultSpacing[o - 1] = spacing; | |
} | |
inline qreal defaultSpacing(Qt::Orientation o) const { | |
return m_defaultSpacing[o - 1]; | |
} | |
inline qreal perItemSpacing(QSizePolicy::ControlType control1, | |
QSizePolicy::ControlType control2, | |
Qt::Orientation orientation) const | |
{ | |
Q_ASSERT(style()); | |
return style()->layoutSpacing(control1, control2, orientation, &m_styleOption, widget()); | |
} | |
private: | |
bool m_valid; | |
QStyle *m_style; | |
QWidget *m_widget; | |
QStyleOption m_styleOption; | |
qreal m_defaultSpacing[2]; | |
}; | |
class Q_AUTOTEST_EXPORT QGraphicsLayoutPrivate : public QGraphicsLayoutItemPrivate | |
{ | |
Q_DECLARE_PUBLIC(QGraphicsLayout) | |
public: | |
QGraphicsLayoutPrivate() : QGraphicsLayoutItemPrivate(0, true), left(-1.0), top(-1.0), right(-1.0), bottom(-1.0), | |
activated(true) { } | |
void reparentChildItems(QGraphicsItem *newParent); | |
void getMargin(qreal *result, qreal userMargin, QStyle::PixelMetric pm) const; | |
Qt::LayoutDirection visualDirection() const; | |
void addChildLayoutItem(QGraphicsLayoutItem *item); | |
void activateRecursive(QGraphicsLayoutItem *item); | |
qreal left, top, right, bottom; | |
bool activated; | |
}; | |
QT_END_NAMESPACE | |
#endif //QT_NO_GRAPHICSVIEW | |
#endif |