X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/afca8efa2601d9566c8d34d7b67dfb5abc729956..555364c006d24daad0755d949c770f44c47fb614:/src/kitemviews/kitemlistcontroller.h diff --git a/src/kitemviews/kitemlistcontroller.h b/src/kitemviews/kitemlistcontroller.h index 04d49854e..d0e5f72ec 100644 --- a/src/kitemviews/kitemlistcontroller.h +++ b/src/kitemviews/kitemlistcontroller.h @@ -34,6 +34,7 @@ class KItemModelBase; class KItemListKeyboardSearchManager; class KItemListSelectionManager; class KItemListView; +class KItemListWidget; class QGraphicsSceneHoverEvent; class QGraphicsSceneDragDropEvent; class QGraphicsSceneMouseEvent; @@ -85,6 +86,33 @@ public: void setSelectionBehavior(SelectionBehavior behavior); SelectionBehavior selectionBehavior() const; + /** + * Sets the delay in milliseconds when dragging an object above an item + * until the item gets activated automatically. A value of -1 indicates + * that no automatic activation will be done at all (= default value). + * + * The hovered item must support dropping (see KItemModelBase::supportsDropping()), + * otherwise the automatic activation is not available. + * + * After activating the item the signal itemActivated() will be + * emitted. If the view supports the expanding of items + * (KItemListView::supportsItemExpanding() returns true) and the item + * itself is expandable (see KItemModelBase::isExpandable()) then instead + * of activating the item it gets expanded instead (see + * KItemModelBase::setExpanded()). + */ + void setAutoActivationDelay(int delay); + int autoActivationDelay() const; + + /** + * If set to true, the signals itemActivated() and itemsActivated() are emitted + * after a single-click of the left mouse button. If set to false, a double-click + * is required. Per default the setting from KGlobalSettings::singleClick() is + * used. + */ + void setSingleClickActivation(bool singleClick); + bool singleClickActivation() const; + virtual bool showEvent(QShowEvent* event); virtual bool hideEvent(QHideEvent* event); virtual bool keyPressEvent(QKeyEvent* event); @@ -105,7 +133,35 @@ public: virtual bool processEvent(QEvent* event, const QTransform& transform); signals: - void itemClicked(int index, Qt::MouseButton button); + /** + * Is emitted if exactly one item has been activated by e.g. a mouse-click + * or by pressing Return/Enter. + */ + void itemActivated(int index); + + /** + * Is emitted if more than one item has been activated by pressing Return/Enter + * when having a selection. + */ + void itemsActivated(const QSet& indexes); + + void itemMiddleClicked(int index); + + /** + * Emitted if a context-menu is requested for the item with + * the index \a index. It is assured that the index is valid. + */ + void itemContextMenuRequested(int index, const QPointF& pos); + + /** + * Emitted if a context-menu is requested for the KItemListView. + */ + void viewContextMenuRequested(const QPointF& pos); + + /** + * Emitted if a context-menu is requested for the header of the KItemListView. + */ + void headerContextMenuRequested(const QPointF& pos); /** * Is emitted if the item with the index \p index gets hovered. @@ -119,13 +175,31 @@ signals: */ void itemUnhovered(int index); + /** + * Is emitted if a mouse-button has been pressed above an item. + */ + void itemPressed(int index, Qt::MouseButton button); + + /** + * Is emitted if a mouse-button has been released above an item. + * It is assured that the signal itemPressed() has been emitted before. + */ + void itemReleased(int index, Qt::MouseButton button); + void itemExpansionToggleClicked(int index); + /** + * Is emitted if a drop event is done above the item with the index + * \a index. If \a index is < 0 the drop event is done above an + * empty area of the view. + */ + void itemDropEvent(int index, QGraphicsSceneDragDropEvent* event); + void modelChanged(KItemModelBase* current, KItemModelBase* previous); void viewChanged(KItemListView* current, KItemListView* previous); private slots: - void slotViewOffsetChanged(qreal current, qreal previous); + void slotViewScrollOffsetChanged(qreal current, qreal previous); /** * Is invoked when the rubberband boundaries have been changed and will select @@ -133,18 +207,60 @@ private slots: */ void slotRubberBandChanged(); - void slotKeyboardActivationRequested(const QString& text, bool searchFromNextItem); + void slotChangeCurrentItem(const QString& text, bool searchFromNextItem); + + void slotAutoActivationTimeout(); private: /** - * Creates a QDrag object to start a drag-operation. - * @return True if the QDrag object has been created. If false is returned - * there is no implementation available for KItemModelBase::createMimeData(). + * Creates a QDrag object and initiates a drag-operation. + */ + void startDragging(); + + /** + * @return Widget that is currently in the hovered state. 0 is returned + * if no widget is marked as hovered. + */ + KItemListWidget* hoveredWidget() const; + + /** + * @return Widget that is below the position \a pos. 0 is returned + * if no widget is below the position. + */ + KItemListWidget* widgetForPos(const QPointF& pos) const; + + /** + * Updates m_keyboardAnchorIndex and m_keyboardAnchorPos. If no anchor is + * set, it will be adjusted to the current item. If it is set it will be + * checked whether it is still valid, otherwise it will be reset to the + * current item. */ - bool startDragging(); + void updateKeyboardAnchor(); + + /** + * @return Index for the next row based on the current index. + * If there is no next row the current index will be returned. + */ + int nextRowIndex() const; + + /** + * @return Index for the previous row based on the current index. + * If there is no previous row the current index will be returned. + */ + int previousRowIndex() const; + + /** + * Helper method for updateKeyboardAnchor(), previousRowIndex() and nextRowIndex(). + * @return The position of the keyboard anchor for the item with the index \a index. + * If a horizontal scrolling is used the y-position of the item will be returned, + * for the vertical scrolling the x-position will be returned. + */ + qreal keyboardAnchorPos(int index) const; private: - bool m_dragging; + bool m_singleClickActivation; + bool m_selectionTogglePressed; + bool m_clearSelectionIfItemsAreNotDragged; SelectionBehavior m_selectionBehavior; KItemModelBase* m_model; KItemListView* m_view; @@ -153,13 +269,32 @@ private: int m_pressedIndex; QPointF m_pressedMousePos; + QTimer* m_autoActivationTimer; + /** * When starting a rubberband selection during a Shift- or Control-key has been * pressed the current selection should never be deleted. To be able to restore - * the current selection it is remembered in m_oldSelection before + * the current selection it is remembered in m_oldSelection before the * rubberband gets activated. */ QSet m_oldSelection; + + /** + * Assuming a view is given with a vertical scroll-orientation, grouped items and + * a maximum of 4 columns: + * + * 1 2 3 4 + * 5 6 7 + * 8 9 10 11 + * 12 13 14 + * + * If the current index is on 4 and key-down is pressed, then item 7 gets the current + * item. Now when pressing key-down again item 11 should get the current item and not + * item 10. This makes it necessary to keep track of the requested column to have a + * similar behavior like in a text editor: + */ + int m_keyboardAnchorIndex; + qreal m_keyboardAnchorPos; }; #endif