KDGantt::AbstractRowController Class Reference

Abstract baseclass for row controllers. More...

#include <KDGanttAbstractRowController>

Inheritance diagram for KDGantt::AbstractRowController:

Public Member Functions
	AbstractRowController ()
	Constructor. More...
virtual	~AbstractRowController ()
	Destructor. More...
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

Detailed Description

Abstract baseclass for row controllers.

A row controller is used by the GraphicsView to navigate the model and to determine the row geometries

Definition at line 22 of file kdganttabstractrowcontroller.h.

Constructor & Destructor Documentation

AbstractRowController()

AbstractRowController::AbstractRowController

(

)

Constructor.

Does nothing

Definition at line 23 of file kdganttabstractrowcontroller.cpp.

~AbstractRowController()

AbstractRowController::~AbstractRowController ( )

virtual

Destructor.

Does nothing

Definition at line 28 of file kdganttabstractrowcontroller.cpp.

Member Function Documentation

headerHeight()

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::TreeViewRowController, and KDGantt::ListViewRowController.

indexAbove()

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::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::DateTimeGrid::paintGrid().

indexAt()

virtual QModelIndex KDGantt::AbstractRowController::indexAt ( int  height ) const

pure virtual

Implemented in KDGantt::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::DateTimeGrid::paintGrid().

indexBelow()

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::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::DateTimeGrid::paintGrid().

isRowExpanded()

virtual bool KDGantt::AbstractRowController::isRowExpanded ( const QModelIndex &  idx ) const

pure virtual

Implemented in KDGantt::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::GraphicsScene::updateRow().

isRowVisible()

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 optimize 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::TreeViewRowController, and KDGantt::ListViewRowController.

maximumItemHeight()

virtual int KDGantt::AbstractRowController::maximumItemHeight ( ) const

pure virtual

Implemented in KDGantt::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::GraphicsItem::updateItem().

rowGeometry()

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::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::DateTimeGrid::paintGrid(), and KDGantt::GraphicsScene::updateRow().

totalHeight()

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::TreeViewRowController, and KDGantt::ListViewRowController.

Referenced by KDGantt::GraphicsView::resizeEvent(), and KDGantt::GraphicsView::updateSceneRect().

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The documentation for this class was generated from the following files:

• kdganttabstractrowcontroller.h
• kdganttabstractrowcontroller.cpp