Abstract baseclass for row controllers. A row controller is used by the GraphicsView to nagivate the model and to determine the row geometries. More...
#include <KDGanttAbstractRowController>
Public Member Functions | |
| AbstractRowController () | |
| virtual int | headerHeight () const =0 |
| virtual QModelIndex | indexAbove (const QModelIndex &idx) const =0 |
| virtual QModelIndex | indexAt (int height) const =0 |
| virtual QModelIndex | indexBelow (const QModelIndex &idx) const =0 |
| virtual bool | isRowExpanded (const QModelIndex &idx) const =0 |
| virtual bool | isRowVisible (const QModelIndex &idx) const =0 |
| virtual int | maximumItemHeight () const =0 |
| virtual Span | rowGeometry (const QModelIndex &idx) const =0 |
| virtual int | totalHeight () const =0 |
| virtual | ~AbstractRowController () |
Detailed Description
Abstract baseclass for row controllers. A row controller is used by the GraphicsView to nagivate the model and to determine the row geometries.
Definition at line 32 of file kdganttabstractrowcontroller.h.
Constructor & Destructor Documentation
| AbstractRowController::AbstractRowController | ( | ) |
Constructor. Does nothing
Definition at line 35 of file kdganttabstractrowcontroller.cpp.
| AbstractRowController::~AbstractRowController | ( | ) | [virtual] |
Destructor. Does nothing
Definition at line 40 of file kdganttabstractrowcontroller.cpp.
Member Function Documentation
| int AbstractRowController::headerHeight | ( | ) | const [pure virtual] |
- Returns:
- The height of the header part of the view.
Implement this to control how much space is reserved at the top of the view for a header
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
| QModelIndex AbstractRowController::indexAbove | ( | const QModelIndex & | idx | ) | const [pure virtual] |
- Returns:
- The modelindex for the previous row before idx.
- See also:
- QTreeView::indexAbove
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::DateTimeGrid::paintGrid().
| virtual QModelIndex KDGantt::AbstractRowController::indexAt | ( | int | height | ) | const [pure virtual] |
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::DateTimeGrid::paintGrid().
| QModelIndex AbstractRowController::indexBelow | ( | const QModelIndex & | idx | ) | const [pure virtual] |
- Returns:
- The modelindex for the next row after idx.
- See also:
- QTreeView::indexBelow
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::DateTimeGrid::paintGrid().
| virtual bool KDGantt::AbstractRowController::isRowExpanded | ( | const QModelIndex & | idx | ) | const [pure virtual] |
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::GraphicsScene::updateRow().
| bool AbstractRowController::isRowVisible | ( | const QModelIndex & | idx | ) | const [pure virtual] |
- Returns:
- true if the row containing index idx is visible in the view.
Implement this to allow KDGantt to optimise how items on screen are created. It is not harmful to always return true here, but the View will not perform optimally.
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
| virtual int KDGantt::AbstractRowController::maximumItemHeight | ( | ) | const [pure virtual] |
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::GraphicsItem::updateItem().
| Span AbstractRowController::rowGeometry | ( | const QModelIndex & | idx | ) | const [pure virtual] |
- Returns:
- A Span consisting of the row offset and height for the row containing idx. A simple implementation might look like
Span MyRowCtrlr::rowGeometry(const QModelIndex& idx) { return Span(idx.row()*10,10); }
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::DateTimeGrid::paintGrid(), and KDGantt::GraphicsScene::updateRow().
| int AbstractRowController::totalHeight | ( | ) | const [pure virtual] |
- Returns:
- the total height of the rows. For uniformly sized rows that would be number_of_rows*row_height.
Implemented in KDGantt::ListViewRowController, and KDGantt::TreeViewRowController.
Referenced by KDGantt::GraphicsView::resizeEvent(), and KDGantt::GraphicsView::updateSceneRect().
The documentation for this class was generated from the following files:
