KDChart::MarkerLayoutItem Class Reference

#include <KDChartLayoutItems.h>

Inheritance diagram for KDChart::MarkerLayoutItem:

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Collaboration diagram for KDChart::MarkerLayoutItem:

[legend]

List of all members.

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Detailed Description

Layout item showing a data point marker.

Definition at line 223 of file KDChartLayoutItems.h.

Public Member Functions
virtual Qt::Orientations	expandingDirections () const
virtual QRect	geometry () const
virtual bool	isEmpty () const
	MarkerLayoutItem (AbstractDiagram *diagram, const MarkerAttributes &marker, const QBrush &brush, const QPen &pen, Qt::Alignment alignment=0)
virtual QSize	maximumSize () const
virtual QSize	minimumSize () const
virtual void	paint (QPainter *)
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 ()
virtual void	setGeometry (const QRect &r)
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 QSize	sizeHint () const
virtual void	sizeHintChanged () const
	Report changed size hint: ask the parent widget to recalculate the layout.
Static Public Member Functions
static void	paintIntoRect (QPainter *painter, const QRect &rect, AbstractDiagram *diagram, const MarkerAttributes &marker, const QBrush &brush, const QPen &pen)
Protected Attributes
QWidget *	mParent
QLayout *	mParentLayout

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Constructor & Destructor Documentation

KDChart::MarkerLayoutItem::MarkerLayoutItem	(	KDChart::AbstractDiagram *	diagram,
		const MarkerAttributes &	marker,
		const QBrush &	brush,
		const QPen &	pen,
		Qt::Alignment	alignment = 0
	)

Definition at line 772 of file KDChartLayoutItems.cpp.

    : AbstractLayoutItem( alignment )
    , mDiagram( diagram )
    , mMarker( marker )
    , mBrush( brush )
    , mPen( pen )
{
}

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Member Function Documentation

Qt::Orientations KDChart::MarkerLayoutItem::expandingDirections

(

)

const [virtual]

Definition at line 784 of file KDChartLayoutItems.cpp.

{
    return 0; // Grow neither vertically nor horizontally
}

QRect KDChart::MarkerLayoutItem::geometry

(

)

const [virtual]

Definition at line 789 of file KDChartLayoutItems.cpp.

{
    return mRect;
}

bool KDChart::MarkerLayoutItem::isEmpty

(

)

const [virtual]

Definition at line 794 of file KDChartLayoutItems.cpp.

{
    return false; // never empty, otherwise the layout item would not exist
}

QSize KDChart::MarkerLayoutItem::maximumSize

(

)

const [virtual]

Definition at line 799 of file KDChartLayoutItems.cpp.

References sizeHint().

{
    return sizeHint(); // PENDING(kalle) Review, quite inflexible
}

QSize KDChart::MarkerLayoutItem::minimumSize

(

)

const [virtual]

Definition at line 804 of file KDChartLayoutItems.cpp.

References sizeHint().

{
    return sizeHint(); // PENDING(kalle) Review, quite inflexible
}

void KDChart::MarkerLayoutItem::paint

(

QPainter *

painter

)

[virtual]

Implements KDChart::AbstractLayoutItem.

Definition at line 820 of file KDChartLayoutItems.cpp.

References paintIntoRect().

{
    paintIntoRect( painter, mRect, mDiagram, mMarker, mBrush, mPen );
}

void KDChart::AbstractLayoutItem::paintAll

(

QPainter &

painter

)

[virtual, inherited]

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 KDChart::AbstractLayoutItem::paint().

{
    paint( &painter );
}

void KDChart::AbstractLayoutItem::paintCtx

(

PaintContext *

context

)

[virtual, inherited]

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

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

void KDChart::MarkerLayoutItem::paintIntoRect	(	QPainter *	painter,
		const QRect &	rect,
		AbstractDiagram *	diagram,
		const MarkerAttributes &	marker,
		const QBrush &	brush,
		const QPen &	pen
	)			[static]

Definition at line 825 of file KDChartLayoutItems.cpp.

References KDChart::MarkerAttributes::markerSize(), and KDChart::AbstractDiagram::paintMarker().

Referenced by KDChart::LineWithMarkerLayoutItem::paint(), and paint().

{
    if( ! rect.isValid() )
        return;

    // The layout management may assign a larger rect than what we
    // wanted. We need to adjust the position.
    const QSize siz = marker.markerSize().toSize();
    QPointF pos = rect.topLeft();
    pos += QPointF( static_cast<qreal>(( rect.width()  - siz.width()) / 2.0 ),
                    static_cast<qreal>(( rect.height() - siz.height()) / 2.0 ) );

#ifdef DEBUG_ITEMS_PAINT
    QPointF oldPos = pos;
#endif

// And finally, drawMarker() assumes the position to be the center
    // of the marker, adjust again.
    pos += QPointF( static_cast<qreal>( siz.width() ) / 2.0,
                    static_cast<qreal>( siz.height() )/ 2.0 );

    diagram->paintMarker( painter, marker, brush, pen, pos.toPoint(), siz );

#ifdef DEBUG_ITEMS_PAINT
    const QPen oldPen( painter->pen() );
    painter->setPen( Qt::red );
    painter->drawRect( QRect(oldPos.toPoint(), siz) );
    painter->setPen( oldPen );
#endif
}

QLayout* KDChart::AbstractLayoutItem::parentLayout

(

)

[inherited]

Definition at line 79 of file KDChartLayoutItems.h.

        {
            return mParentLayout;
        }

void KDChart::AbstractLayoutItem::removeFromParentLayout

(

)

[inherited]

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::MarkerLayoutItem::setGeometry

(

const QRect &

r

)

[virtual]

Definition at line 809 of file KDChartLayoutItems.cpp.

{
    mRect = r;
}

void KDChart::AbstractLayoutItem::setParentLayout

(

QLayout *

lay

)

[inherited]

Definition at line 75 of file KDChartLayoutItems.h.

        {
            mParentLayout = lay;
        }

void KDChart::AbstractLayoutItem::setParentWidget

(

QWidget *

widget

)

[virtual, inherited]

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 KDChart::AbstractLayoutItem::mParent.

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

{
    mParent = widget;
}

QSize KDChart::MarkerLayoutItem::sizeHint

(

)

const [virtual]

Definition at line 814 of file KDChartLayoutItems.cpp.

References KDChart::MarkerAttributes::markerSize().

Referenced by maximumSize(), and minimumSize().

{
    //qDebug() << "KDChart::MarkerLayoutItem::sizeHint() returns:"<<mMarker.markerSize().toSize();
    return mMarker.markerSize().toSize();
}

void KDChart::AbstractLayoutItem::sizeHintChanged

(

)

const [virtual, inherited]

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

Definition at line 87 of file KDChartLayoutItems.cpp.

References KDChart::AbstractLayoutItem::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, inherited]

Definition at line 93 of file KDChartLayoutItems.h.

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

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

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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