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#ifndef STATICTABLE_H
#define STATICTABLE_H

#include <QWidget>
#include <QLayout>
#include <QList>
#include <QVector>

/*
 * This implements new layout and widget in the same time.
 * Basic idea is that we need some table view that can also fill in horizontal space.
 * This widget paints simple table under neath the widgets and lays them out in to them.
 * It shows more than one column when there is enought horizontal space.
 */

class StaticTableLayout : public QLayout {
public:
    StaticTableLayout(QWidget *parent, int margin = 4, int horizontal_big_spacing = 4, int horizontal_small_spacing = 8, int vertical_spacing = 4);
    ~StaticTableLayout();

    Qt::Orientations expandingDirections() const override;
    bool hasHeightForWidth() const override;
    int heightForWidth(int) const override;
    QSize minimumSize() const override;
    void setGeometry(const QRect &rect) override;
    QSize sizeHint() const override;

    void addItem(QLayoutItem *item) override;
    QLayoutItem *itemAt(int index) const override;
    QLayoutItem *takeAt(int index) override;
    int count() const override; // This returns number of item blocks

    void addRow(QList<QWidget*>); // This adds row of widgets
    void insertRow(QList<QWidget*>, int i); // Insert row to given position while shifting all other up
    void removeRow(int i); // Remove row
    void clearRows(); // Clear all rows from table

    void itemRect(QRect &rect, QVector<int> &separators, int i); // This returns single item rectable (if expad_margin and it's on edge also count in margin)
    int columns();
    int real_row_height();

protected:
    int shspace, bhspace, vspace;
    QVector<QVector<QLayoutItem*>> items;

    int row_height;
    QList<QList<int>> row_widths;

    int layout_count_approx(const QRect &rect) const;
    int layout_size(int &row_h, QList<QList<int>> &row_w, int count) const;
    void layout_parms(QRect &rect, int &row_h, QList<QList<int>> &row_w, int &count) const;
    void do_layout(const QRect &rect);
    int layout_height(int width) const;

    QVector<QLayoutItem*> list2vec(QList<QWidget*>);

    struct {
        QSize size;
        int count;
    } cch_do_layout;
    mutable struct {
        int w, count;
        int width;
    } cch_heightForWidth;
    mutable struct {
        int count;
        QSize size;
    } cch_minSize;

};

class StaticTable : public QWidget {
public:
    StaticTable(QWidget *parent = nullptr);

    int count();
    void addRow(QList<QWidget*>);
    void insertRow(QList<QWidget*>, int i);
    void removeRow(int i);
    void clearRows();

    int columns();
    int row_size(); // return real row size (height) including spacing

protected:
    void paintEvent(QPaintEvent*);

    StaticTableLayout layout;
};

#endif // STATICTABLE_H