flowlayout.h

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/* Original work Copyright (C) 2016 The Qt Company Ltd.
 * Modified work Copyright (C) 2018 - Brad Parker
 */

/* bparker: Removed C++11 override keyword from original source
 *          Changed QList to QVector
 */

#ifndef FLOWLAYOUT_H
#define FLOWLAYOUT_H

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

class ThumbnailWidget;

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

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

signals:
   void signalAddWidgetDeferred(QPointer<ThumbnailWidget> widget);

private slots:
   void onAddWidgetDeferred(QPointer<ThumbnailWidget> widget);

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

   QVector<QLayoutItem*> itemList;
   int m_hSpace;
   int m_vSpace;
};

#endif // FLOWLAYOUT_H