mirror of
https://github.com/libretro/RetroArch
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75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
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#ifndef GRIDVIEW_H
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#define GRIDVIEW_H
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#include <QAbstractItemView>
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#include <QStyledItemDelegate>
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class ThumbnailDelegate : public QStyledItemDelegate
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{
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Q_OBJECT
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public:
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ThumbnailDelegate(QObject* parent = 0);
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void paint(QPainter* painter, const QStyleOptionViewItem &option, const QModelIndex& index) const;
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};
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class GridView : public QAbstractItemView
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{
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Q_OBJECT
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public:
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enum ViewMode
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{
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Simple,
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Centered,
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Anchored
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};
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GridView(QWidget *parent = 0);
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~GridView() {}
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QModelIndex indexAt(const QPoint &point_) const;
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QVector<QModelIndex> visibleIndexes() const;
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QRect visualRect(const QModelIndex &index) const;
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void setModel(QAbstractItemModel *model);
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void scrollTo(const QModelIndex &index, QAbstractItemView::ScrollHint);
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void setGridSize(const int newSize);
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void setviewMode(ViewMode mode);
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signals:
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void visibleItemsChangedMaybe() const;
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protected slots:
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void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
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void rowsInserted(const QModelIndex &parent, int start, int end);
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void rowsRemoved(const QModelIndex &parent, int start, int end);
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void updateGeometries();
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void reset() override;
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protected:
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QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers);
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QRegion visualRegionForSelection(const QItemSelection &selection) const;
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bool isIndexHidden(const QModelIndex&) const { return false; }
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int horizontalOffset() const;
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int verticalOffset() const;
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void scrollContentsBy(int dx, int dy);
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void setSelection(const QRect &rect, QFlags<QItemSelectionModel::SelectionFlag> flags);
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void paintEvent(QPaintEvent*);
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void resizeEvent(QResizeEvent*);
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private:
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QRectF viewportRectForRow(int row) const;
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void calculateRectsIfNecessary() const;
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void refresh();
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int m_size = 255;
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int m_spacing = 7;
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QVector<QModelIndex> m_visibleIndexes;
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ViewMode m_viewMode = Centered;
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mutable int m_idealHeight;
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mutable QHash<int, QRectF> m_rectForRow;
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mutable bool m_hashIsDirty;
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};
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#endif // GRIDVIEW_H
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