source: trunk/src/gui/graphicsview/qgraphicslayout_p.h

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 5.0 KB
RevLine 
[2]1/****************************************************************************
2**
[846]3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
[561]4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
[2]6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
[561]24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
[2]27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
[561]36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
[2]38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QGRAPHICSLAYOUT_P_H
43#define QGRAPHICSLAYOUT_P_H
44
45//
46// W A R N I N G
47// -------------
48//
49// This file is not part of the Qt API. It exists for the convenience
[561]50// of other Qt classes. This header file may change from version to
51// version without notice, or even be removed.
[2]52//
53// We mean it.
54//
55
56#include <QtCore/qglobal.h>
57
58#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
59
60#include "qgraphicslayout.h"
61#include "qgraphicslayoutitem_p.h"
62#include <QtGui/qstyle.h>
[561]63#include <QtGui/qwidget.h>
64#include <QtGui/qstyleoption.h>
[2]65
66QT_BEGIN_NAMESPACE
67
68class QGraphicsLayoutItem;
69class QGraphicsWidget;
70
71#ifdef QT_DEBUG
72inline bool qt_graphicsLayoutDebug()
73{
74 static int checked_env = -1;
75 if(checked_env == -1)
76 checked_env = !!qgetenv("QT_GRAPHICSLAYOUT_DEBUG").toInt();
77 return checked_env;
78}
79#endif
80
[561]81
82class QLayoutStyleInfo
83{
84public:
85 inline QLayoutStyleInfo() { invalidate(); }
86 inline QLayoutStyleInfo(QStyle *style, QWidget *widget)
87 : m_valid(true), m_style(style), m_widget(widget)
88 {
89 Q_ASSERT(style);
90 if (widget) //###
91 m_styleOption.initFrom(widget);
92 m_defaultSpacing[0] = style->pixelMetric(QStyle::PM_LayoutHorizontalSpacing);
93 m_defaultSpacing[1] = style->pixelMetric(QStyle::PM_LayoutVerticalSpacing);
94 }
95
96 inline void invalidate() { m_valid = false; m_style = 0; m_widget = 0; }
97
98 inline QStyle *style() const { return m_style; }
99 inline QWidget *widget() const { return m_widget; }
100