diff options
Diffstat (limited to 'application/groupview/GroupView.h')
-rw-r--r-- | application/groupview/GroupView.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/application/groupview/GroupView.h b/application/groupview/GroupView.h new file mode 100644 index 00000000..93e45ed7 --- /dev/null +++ b/application/groupview/GroupView.h @@ -0,0 +1,125 @@ +#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; +}; |