KDChart::AbstractLayoutItem Class Reference

#include <KDChartLayoutItems.h>

Inheritance diagram for KDChart::AbstractLayoutItem:

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Collaboration diagram for KDChart::AbstractLayoutItem:

[legend]

List of all members.

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Detailed Description

Base class for all layout items of KD Chart.

Definition at line 53 of file KDChartLayoutItems.h.

Public Member Functions
	AbstractLayoutItem (Qt::Alignment itemAlignment=0)
virtual void	paint (QPainter *)=0
virtual void	paintAll (QPainter &painter)
	Default impl: just call paint.
virtual void	paintCtx (PaintContext *context)
	Default impl: Paint the complete item using its layouted position and size.
QLayout *	parentLayout ()
void	removeFromParentLayout ()
void	setParentLayout (QLayout *lay)
virtual void	setParentWidget (QWidget *widget)
	Inform the item about its widget: This enables the item, to trigger that widget's update, whenever the size of the item's contents has changed.
virtual void	sizeHintChanged () const
	Report changed size hint: ask the parent widget to recalculate the layout.
Protected Attributes
QWidget *	mParent
QLayout *	mParentLayout

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Constructor & Destructor Documentation

KDChart::AbstractLayoutItem::AbstractLayoutItem

(

Qt::Alignment

itemAlignment = 0

)

Definition at line 56 of file KDChartLayoutItems.h.

                                                            :
            QLayoutItem( itemAlignment ),
            mParent( 0 ),
            mParentLayout( 0 ) {}

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Member Function Documentation

virtual void KDChart::AbstractLayoutItem::paint

(

QPainter *

)

[pure virtual]

Implemented in KDChart::CartesianAxis, KDChart::CartesianCoordinatePlane, KDChart::TextLayoutItem, KDChart::TextBubbleLayoutItem, KDChart::MarkerLayoutItem, KDChart::LineLayoutItem, KDChart::LineWithMarkerLayoutItem, KDChart::HorizontalLineLayoutItem, KDChart::VerticalLineLayoutItem, KDChart::AutoSpacerLayoutItem, KDChart::PolarCoordinatePlane, KDChart::TernaryAxis, and KDChart::TernaryCoordinatePlane.

Referenced by KDChart::Legend::paint(), paintAll(), KDChart::AbstractArea::paintAll(), and paintCtx().

void KDChart::AbstractLayoutItem::paintAll

(

QPainter &

painter

)

[virtual]

Default impl: just call paint.

Derived classes like KDChart::AbstractArea are providing additional action here.

Reimplemented in KDChart::AbstractArea, KDChart::TextArea, and KDChart::TernaryAxis.

Definition at line 70 of file KDChartLayoutItems.cpp.

References paint().

{
    paint( &painter );
}

void KDChart::AbstractLayoutItem::paintCtx

(

PaintContext *

context

)

[virtual]

Default impl: Paint the complete item using its layouted position and size.

Reimplemented in KDChart::CartesianAxis, KDChart::LeveyJenningsAxis, and KDChart::TernaryAxis.

Definition at line 78 of file KDChartLayoutItems.cpp.

References paint(), and KDChart::PaintContext::painter().

{
    if( context )
        paint( context->painter() );
}

QLayout* KDChart::AbstractLayoutItem::parentLayout

(

)

Definition at line 79 of file KDChartLayoutItems.h.

        {
            return mParentLayout;
        }

void KDChart::AbstractLayoutItem::removeFromParentLayout

(

)

Definition at line 83 of file KDChartLayoutItems.h.

Referenced by KDChart::Chart::takeCoordinatePlane().

        {
            if( mParentLayout ){
                if( widget() )
                    mParentLayout->removeWidget( widget() );
                else
                    mParentLayout->removeItem( this );
            }
        }

void KDChart::AbstractLayoutItem::setParentLayout

(

QLayout *

lay

)

Definition at line 75 of file KDChartLayoutItems.h.

        {
            mParentLayout = lay;
        }

void KDChart::AbstractLayoutItem::setParentWidget

(

QWidget *

widget

)

[virtual]

Inform the item about its widget: This enables the item, to trigger that widget's update, whenever the size of the item's contents has changed.

Thus, you need to call setParentWidget on every item, that has a non-fixed size.

Definition at line 65 of file KDChartLayoutItems.cpp.

References mParent.

Referenced by KDChart::HeaderFooter::setParent(), and KDChart::AbstractCartesianDiagram::takeAxis().

{
    mParent = widget;
}

void KDChart::AbstractLayoutItem::sizeHintChanged

(

)

const [virtual]

Report changed size hint: ask the parent widget to recalculate the layout.

Definition at line 87 of file KDChartLayoutItems.cpp.

References mParent.

Referenced by KDChart::TextLayoutItem::sizeHintAndRotatedCorners().

{
    // This is exactly like what QWidget::updateGeometry does.
//  qDebug("KDChart::AbstractLayoutItem::sizeHintChanged() called");
    if( mParent ) {
        if ( mParent->layout() )
            mParent->layout()->invalidate();
        else
            QApplication::postEvent( mParent, new QEvent( QEvent::LayoutRequest ) );
    }
}

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Member Data Documentation

QWidget* KDChart::AbstractLayoutItem::mParent [protected]

Definition at line 93 of file KDChartLayoutItems.h.

Referenced by setParentWidget(), KDChart::TextLayoutItem::setText(), KDChart::TextLayoutItem::setTextAlignment(), KDChart::TextLayoutItem::setTextAttributes(), and sizeHintChanged().

QLayout* KDChart::AbstractLayoutItem::mParentLayout [protected]

Definition at line 94 of file KDChartLayoutItems.h.

Referenced by KDChart::AutoSpacerLayoutItem::paint().

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

• KDChartLayoutItems.h
• KDChartLayoutItems.cpp

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