| /**************************************************************************** |
| ** |
| ** 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 |