131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
#ifndef WIDGET_H
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#define WIDGET_H
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#include <QListView>
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#include <QLineEdit>
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#include <QCache>
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class CategorizedView : public QListView
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{
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Q_OBJECT
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public:
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CategorizedView(QWidget *parent = 0);
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~CategorizedView();
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enum
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{
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CategoryRole = Qt::UserRole
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};
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virtual QRect visualRect(const QModelIndex &index) const;
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QModelIndex indexAt(const QPoint &point) const;
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void setSelection(const QRect &rect, const QItemSelectionModel::SelectionFlags commands) override;
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protected slots:
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void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles);
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virtual void rowsInserted(const QModelIndex &parent, int start, int end);
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virtual void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
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virtual void updateGeometries();
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protected:
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virtual bool isIndexHidden(const QModelIndex &index) const;
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void mousePressEvent(QMouseEvent *event) override;
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void mouseMoveEvent(QMouseEvent *event) override;
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void mouseReleaseEvent(QMouseEvent *event) override;
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void mouseDoubleClickEvent(QMouseEvent *event) override;
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void paintEvent(QPaintEvent *event) override;
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void resizeEvent(QResizeEvent *event) override;
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void dragEnterEvent(QDragEnterEvent *event) override;
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void dragMoveEvent(QDragMoveEvent *event) override;
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void dragLeaveEvent(QDragLeaveEvent *event) override;
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void dropEvent(QDropEvent *event) override;
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void startDrag(Qt::DropActions supportedActions) override;
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private:
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struct Category
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{
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Category(const QString &text, CategorizedView *view);
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Category(const Category *other);
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CategorizedView *view;
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QString text;
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bool collapsed;
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QRect iconRect;
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QRect textRect;
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void drawHeader(QPainter *painter, const int y);
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int totalHeight() const;
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int headerHeight() const;
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int contentHeight() const;
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int numRows() const;
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};
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friend struct Category;
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QList<Category *> m_categories;
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mutable QCache<const Category *, QList<QModelIndex> > m_cachedCategoryToIndexMapping;
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mutable QCache<const QModelIndex, QRect> m_cachedVisualRects;
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int m_leftMargin;
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int m_rightMargin;
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int m_bottomMargin;
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int m_categoryMargin;
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int m_itemSpacing;
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//bool m_updatesDisabled;
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Category *category(const QModelIndex &index) const;
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Category *category(const QString &cat) const;
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Category *categoryAt(const QPoint &pos) const;
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int numItemsForCategory(const Category *category) const;
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QList<QModelIndex> itemsForCategory(const Category *category) const;
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QModelIndex firstItemForCategory(const Category *category) const;
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QModelIndex lastItemForCategory(const Category *category) const;
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int categoryTop(const Category *category) const;
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int itemsPerRow() const;
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int contentWidth() const;
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static bool lessThanCategoryPointer(const Category *c1, const Category *c2);
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QList<Category *> sortedCategories() const;
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private:
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mutable int m_cachedItemWidth;
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mutable QCache<QModelIndex, QSize> m_cachedItemSizes;
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int itemWidth() const;
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QSize itemSize(const QModelIndex &index) const;
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/*QLineEdit *m_categoryEditor;
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Category *m_editedCategory;
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void startCategoryEditor(Category *category);
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private slots:
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void endCategoryEditor();*/
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private:
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QPoint m_pressedPosition;
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QPersistentModelIndex m_pressedIndex;
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bool m_pressedAlreadySelected;
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Category *m_pressedCategory;
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QItemSelectionModel::SelectionFlag m_ctrlDragSelectionFlag;
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QPoint m_lastDragPosition;
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QPair<int, int> categoryInternalPosition(const QModelIndex &index) const;
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int itemHeightForCategoryRow(const Category *category, const int internalRow) const;
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QPixmap renderToPixmap(const QModelIndexList &indices, QRect *r) const;
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QList<QPair<QRect, QModelIndex> > draggablePaintPairs(const QModelIndexList &indices, QRect *r) const;
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bool isDragEventAccepted(QDropEvent *event);
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QPair<Category *, int> rowDropPos(const QPoint &pos);
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void invalidateCaches();
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QPoint offset() const;
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};
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#endif // WIDGET_H
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