128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
#pragma once
|
|
|
|
#include <QListView>
|
|
#include <QLineEdit>
|
|
#include <QScrollBar>
|
|
#include <QCache>
|
|
|
|
struct GroupViewRoles
|
|
{
|
|
enum
|
|
{
|
|
GroupRole = Qt::UserRole,
|
|
ProgressValueRole,
|
|
ProgressMaximumRole
|
|
};
|
|
};
|
|
|
|
struct VisualGroup;
|
|
|
|
class GroupView : public QAbstractItemView
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
GroupView(QWidget *parent = 0);
|
|
~GroupView();
|
|
|
|
void setModel(QAbstractItemModel *model) override;
|
|
|
|
/// return geometry rectangle occupied by the specified model item
|
|
QRect geometryRect(const QModelIndex &index) const;
|
|
/// return visual rectangle occupied by the specified model item
|
|
virtual QRect visualRect(const QModelIndex &index) const override;
|
|
/// get the model index at the specified visual point
|
|
virtual QModelIndex indexAt(const QPoint &point) const override;
|
|
void setSelection(const QRect &rect,
|
|
const QItemSelectionModel::SelectionFlags commands) override;
|
|
|
|
virtual int horizontalOffset() const override;
|
|
virtual int verticalOffset() const override;
|
|
virtual void scrollContentsBy(int dx, int dy) override;
|
|
virtual void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) override;
|
|
|
|
virtual QModelIndex moveCursor(CursorAction cursorAction,
|
|
Qt::KeyboardModifiers modifiers) override;
|
|
|
|
virtual QRegion visualRegionForSelection(const QItemSelection &selection) const override;
|
|
|
|
int spacing() const
|
|
{
|
|
return m_spacing;
|
|
};
|
|
|
|
public slots:
|
|
virtual void updateGeometries() override;
|
|
|
|
protected slots:
|
|
virtual void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
|
|
const QVector<int> &roles) override;
|
|
virtual void rowsInserted(const QModelIndex &parent, int start, int end) override;
|
|
virtual void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) override;
|
|
void modelReset();
|
|
|
|
protected:
|
|
virtual bool isIndexHidden(const QModelIndex &index) const override;
|
|
void mousePressEvent(QMouseEvent *event) override;
|
|
void mouseMoveEvent(QMouseEvent *event) override;
|
|
void mouseReleaseEvent(QMouseEvent *event) override;
|
|
void mouseDoubleClickEvent(QMouseEvent *event) override;
|
|
void paintEvent(QPaintEvent *event) override;
|
|
void resizeEvent(QResizeEvent *event) override;
|
|
|
|
void dragEnterEvent(QDragEnterEvent *event) override;
|
|
void dragMoveEvent(QDragMoveEvent *event) override;
|
|
void dragLeaveEvent(QDragLeaveEvent *event) override;
|
|
void dropEvent(QDropEvent *event) override;
|
|
|
|
void startDrag(Qt::DropActions supportedActions) override;
|
|
|
|
private:
|
|
friend struct VisualGroup;
|
|
QList<VisualGroup *> m_groups;
|
|
|
|
// geometry
|
|
int m_leftMargin = 5;
|
|
int m_rightMargin = 5;
|
|
int m_bottomMargin = 5;
|
|
int m_categoryMargin = 5;
|
|
int m_spacing = 5;
|
|
int m_itemWidth = 100;
|
|
int m_currentItemsPerRow = -1;
|
|
int m_currentCursorColumn= -1;
|
|
mutable QCache<int, QRect> geometryCache;
|
|
|
|
// point where the currently active mouse action started in geometry coordinates
|
|
QPoint m_pressedPosition;
|
|
QPersistentModelIndex m_pressedIndex;
|
|
bool m_pressedAlreadySelected;
|
|
VisualGroup *m_pressedCategory;
|
|
QItemSelectionModel::SelectionFlag m_ctrlDragSelectionFlag;
|
|
QPoint m_lastDragPosition;
|
|
|
|
VisualGroup *category(const QModelIndex &index) const;
|
|
VisualGroup *category(const QString &cat) const;
|
|
VisualGroup *categoryAt(const QPoint &pos) const;
|
|
|
|
int itemsPerRow() const
|
|
{
|
|
return m_currentItemsPerRow;
|
|
};
|
|
int contentWidth() const;
|
|
|
|
private: /* methods */
|
|
int itemWidth() const;
|
|
int calculateItemsPerRow() const;
|
|
int verticalScrollToValue(const QModelIndex &index, const QRect &rect,
|
|
QListView::ScrollHint hint) const;
|
|
QPixmap renderToPixmap(const QModelIndexList &indices, QRect *r) const;
|
|
QList<QPair<QRect, QModelIndex>> draggablePaintPairs(const QModelIndexList &indices,
|
|
QRect *r) const;
|
|
|
|
bool isDragEventAccepted(QDropEvent *event);
|
|
|
|
QPair<VisualGroup *, int> rowDropPos(const QPoint &pos);
|
|
|
|
QPoint offset() const;
|
|
};
|