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#pragma once
#include <QString>
#include <QRect>
#include <QVector>
#include <QStyleOption>
class GroupView;
class QPainter;
class QModelIndex;
struct VisualRow
{
QList<QModelIndex> items;
int height = 0;
int top = 0;
inline int size() const
{
return items.size();
}
inline QModelIndex &operator[](int i)
{
return items[i];
}
};
struct VisualGroup
{
/* constructors */
VisualGroup(const QString &text, GroupView *view);
VisualGroup(const VisualGroup *other);
/* data */
GroupView *view = nullptr;
QString text;
bool collapsed = false;
QVector<VisualRow> rows;
int firstItemIndex = 0;
int m_verticalPosition = 0;
/* logic */
/// update the internal list of items and flow them into the rows.
void update();
/// draw the header at y-position.
void drawHeader(QPainter *painter, const QStyleOptionViewItem &option);
/// height of the group, in total. includes a small bit of padding.
int totalHeight() const;
/// height of the group header, in pixels
int headerHeight() const;
/// height of the group content, in pixels
int contentHeight() const;
/// the number of visual rows this group has
int numRows() const;
/// actually calculate the above value
int calculateNumRows() const;
/// the height at which this group starts, in pixels
int verticalPosition() const;
/// relative geometry - top of the row of the given item
int rowTopOf(const QModelIndex &index) const;
/// height of the row of the given item
int rowHeightOf(const QModelIndex &index) const;
/// x/y position of the given item inside the group (in items!)
QPair<int, int> positionOf(const QModelIndex &index) const;
enum HitResult
{
NoHit = 0x0,
TextHit = 0x1,
CheckboxHit = 0x2,
HeaderHit = 0x4,
BodyHit = 0x8
};
Q_DECLARE_FLAGS(HitResults, HitResult)
/// shoot! BANG! what did we hit?
HitResults hitScan (const QPoint &pos) const;
QList<QModelIndex> items() const;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(VisualGroup::HitResults)
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