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Pencil2D is an animation software for both bitmap and vector graphics. It is free, multi-platform, and open source.
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flowlayout.h
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40 
41 #ifndef FLOWLAYOUT_H
42 #define FLOWLAYOUT_H
43 
44 #include <QLayout>
45 #include <QStyle>
46 
47 class FlowLayout : public QLayout
48 {
49 public:
50  FlowLayout(QWidget *parent, int margin = -1, int hSpacing = -1, int vSpacing = -1);
51  FlowLayout(int margin = -1, int hSpacing = -1, int vSpacing = -1);
52  ~FlowLayout();
53 
54  void addItem(QLayoutItem *item);
55  int horizontalSpacing() const;
56  int verticalSpacing() const;
57  Qt::Orientations expandingDirections() const;
58  bool hasHeightForWidth() const;
59  int heightForWidth(int) const;
60  int count() const;
61  QLayoutItem *itemAt(int index) const;
62  QSize minimumSize() const;
63  void setGeometry(const QRect &rect);
64  QSize sizeHint() const;
65  QLayoutItem *takeAt(int index);
66 
67 private:
68  int doLayout(const QRect &rect, bool testOnly) const;
69  int smartSpacing(QStyle::PixelMetric pm) const;
70 
71  QList<QLayoutItem *> itemList;
72  int m_hSpace;
73  int m_vSpace;
74 };
75 
76 #endif