KDGantt::AbstractRowController Class Reference

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>

Inheritance diagram for KDGantt::AbstractRowController:

List of all members.

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 ()

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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.

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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.

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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().

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

• kdganttabstractrowcontroller.h
• kdganttabstractrowcontroller.cpp