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Diffstat (limited to 'src/gui/util/qabstractlayoutstyleinfo_p.h')
-rw-r--r-- | src/gui/util/qabstractlayoutstyleinfo_p.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/gui/util/qabstractlayoutstyleinfo_p.h b/src/gui/util/qabstractlayoutstyleinfo_p.h new file mode 100644 index 0000000000..52f151c5d2 --- /dev/null +++ b/src/gui/util/qabstractlayoutstyleinfo_p.h @@ -0,0 +1,97 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtGui 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QABSTRACTLAYOUTSTYLEINFO_P_H +#define QABSTRACTLAYOUTSTYLEINFO_P_H + +#include <QtCore/qnamespace.h> +#include "qlayoutpolicy_p.h" + +QT_BEGIN_NAMESPACE + + +class Q_GUI_EXPORT QAbstractLayoutStyleInfo { +public: + typedef enum { + Unknown = 0, + Changed, + Unchanged + } ChangedState; + + QAbstractLayoutStyleInfo() : m_isWindow(false), m_changed(Changed) {} + virtual ~QAbstractLayoutStyleInfo() {} + virtual qreal combinedLayoutSpacing(QLayoutPolicy::ControlTypes /*controls1*/, + QLayoutPolicy::ControlTypes /*controls2*/, Qt::Orientation /*orientation*/) const { + return -1; + } + + virtual qreal perItemSpacing(QLayoutPolicy::ControlType /*control1*/, + QLayoutPolicy::ControlType /*control2*/, + Qt::Orientation /*orientation*/) const { + return -1; + } + + virtual qreal spacing(Qt::Orientation orientation) const = 0; + + virtual bool hasChangedCore() const = 0; + + void updateChanged(ChangedState change) { + m_changed = change; + } + + bool hasChanged() const; + + virtual void invalidate() { updateChanged(Changed);} + + virtual qreal windowMargin(Qt::Orientation orientation) const = 0; + + bool isWindow() const { + return m_isWindow; + } + +protected: + unsigned m_isWindow : 1; + mutable unsigned m_changed : 2; +}; + +QT_END_NAMESPACE + +#endif // QABSTRACTLAYOUTSTYLEINFO_P_H |