KGantt::AbstractRowController Class Reference

#include <KGanttAbstractRowController>

Inheritance diagram for KGantt::AbstractRowController:

Public Member Functions
	AbstractRowController ()
virtual	~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

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 28 of file kganttabstractrowcontroller.h.

Constructor & Destructor Documentation

AbstractRowController()

AbstractRowController::AbstractRowController

(

)

Constructor. Does nothing

Definition at line 14 of file kganttabstractrowcontroller.cpp.

~AbstractRowController()

AbstractRowController::~AbstractRowController ( )

virtual

Destructor. Does nothing

Definition at line 19 of file kganttabstractrowcontroller.cpp.

Member Function Documentation

headerHeight()

int KGantt::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 KGantt::ListViewRowController, and KGantt::TreeViewRowController.

indexAbove()

QModelIndex KGantt::AbstractRowController::indexAbove ( const QModelIndex & idx ) const

pure virtual

Returns

The modelindex for the previous row before idx.

See also

QTreeView::indexAbove

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

indexBelow()

QModelIndex KGantt::AbstractRowController::indexBelow ( const QModelIndex & idx ) const

pure virtual

Returns

The modelindex for the next row after idx.

See also

QTreeView::indexBelow

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

isRowVisible()

bool KGantt::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 KGantt 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 KGantt::ListViewRowController, and KGantt::TreeViewRowController.

rowGeometry()

Span KGantt::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 KGantt::ListViewRowController, and KGantt::TreeViewRowController.

totalHeight()

int KGantt::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 KGantt::ListViewRowController, and KGantt::TreeViewRowController.

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

• kganttabstractrowcontroller.h
• kganttabstractrowcontroller.cpp