dolphin/Source/Core/DolphinQt/QtUtils/FlowLayout.h

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#pragma once

#include <QLayout>
#include <QRect>
#include <QStyle>

class FlowLayout : public QLayout
{
public:
  explicit FlowLayout(QWidget* parent, int margin = -1, int h_spacing = -1, int v_spacing = -1);
  explicit FlowLayout(int margin = -1, int h_spacing = -1, int v_spacing = -1);
  ~FlowLayout();

  void addItem(QLayoutItem* item) override;
  int horizontalSpacing() const;
  int verticalSpacing() const;
  Qt::Orientations expandingDirections() const override;
  bool hasHeightForWidth() const override;
  int heightForWidth(int) const override;
  int count() const override;
  QLayoutItem* itemAt(int index) const override;
  QSize minimumSize() const override;
  void setGeometry(const QRect& rect) override;
  QSize sizeHint() const override;
  QLayoutItem* takeAt(int index) override;

private:
  int doLayout(const QRect& rect, bool testOnly) const;
  int smartSpacing(QStyle::PixelMetric pm) const;

  QList<QLayoutItem*> m_item_list;
  int m_h_space;
  int m_v_space;
};