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-rw-r--r--application/groupview/GroupView.h125
1 files changed, 125 insertions, 0 deletions
diff --git a/application/groupview/GroupView.h b/application/groupview/GroupView.h
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+++ b/application/groupview/GroupView.h
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+#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;
+ };
+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;
+ virtual void updateGeometries() 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;
+};