KDChart::LineLayoutItem Class Reference

#include <KDChartLayoutItems.h>

Inheritance diagram for KDChart::LineLayoutItem:

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Collaboration diagram for KDChart::LineLayoutItem:

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List of all members.


Detailed Description

Layout item showing a coloured line.

Definition at line 262 of file KDChartLayoutItems.h.


Public Member Functions

virtual Qt::Orientations expandingDirections () const
virtual QRect geometry () const
virtual bool isEmpty () const
 LineLayoutItem (AbstractDiagram *diagram, int length, 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, const QPen &pen)

Protected Attributes

QWidgetmParent
QLayout * mParentLayout

Constructor & Destructor Documentation

KDChart::LineLayoutItem::LineLayoutItem ( KDChart::AbstractDiagram diagram,
int  length,
const QPen &  pen,
Qt::Alignment  alignment = 0 
)

Definition at line 863 of file KDChartLayoutItems.cpp.

00867     : AbstractLayoutItem( alignment )
00868     , mDiagram( diagram )
00869     , mLength( length )
00870     , mPen( pen )
00871 {
00872     //have a mini pen width
00873     if ( pen.width() < 2 )
00874         mPen.setWidth( 2 );
00875 }


Member Function Documentation

Qt::Orientations KDChart::LineLayoutItem::expandingDirections (  )  const [virtual]

Definition at line 877 of file KDChartLayoutItems.cpp.

00878 {
00879     return 0; // Grow neither vertically nor horizontally
00880 }

QRect KDChart::LineLayoutItem::geometry (  )  const [virtual]

Definition at line 882 of file KDChartLayoutItems.cpp.

00883 {
00884     return mRect;
00885 }

bool KDChart::LineLayoutItem::isEmpty (  )  const [virtual]

Definition at line 887 of file KDChartLayoutItems.cpp.

00888 {
00889     return false; // never empty, otherwise the layout item would not exist
00890 }

QSize KDChart::LineLayoutItem::maximumSize (  )  const [virtual]

Definition at line 892 of file KDChartLayoutItems.cpp.

References sizeHint().

00893 {
00894     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00895 }

QSize KDChart::LineLayoutItem::minimumSize (  )  const [virtual]

Definition at line 897 of file KDChartLayoutItems.cpp.

References sizeHint().

00898 {
00899     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00900 }

void KDChart::LineLayoutItem::paint ( QPainter *  painter  )  [virtual]

Implements KDChart::AbstractLayoutItem.

Definition at line 912 of file KDChartLayoutItems.cpp.

References paintIntoRect().

00913 {
00914     paintIntoRect( painter, mRect, mPen );
00915 }

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().

00071 {
00072     paint( &painter );
00073 }

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().

00079 {
00080     if( context )
00081         paint( context->painter() );
00082 }

void KDChart::LineLayoutItem::paintIntoRect ( QPainter *  painter,
const QRect &  rect,
const QPen &  pen 
) [static]

Definition at line 917 of file KDChartLayoutItems.cpp.

References KDChart::PrintingParameters::scalePen().

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

00921 {
00922     if( ! rect.isValid() )
00923         return;
00924 
00925     const QPen oldPen = painter->pen();
00926     painter->setPen( PrintingParameters::scalePen( pen ) );
00927     const qreal y = rect.center().y();
00928     painter->drawLine( QPointF( rect.left(), y ),
00929                        QPointF( rect.right(), y ) );
00930     painter->setPen( oldPen );
00931 }

QLayout* KDChart::AbstractLayoutItem::parentLayout (  )  [inherited]

Definition at line 79 of file KDChartLayoutItems.h.

00080         {
00081             return mParentLayout;
00082         }

void KDChart::AbstractLayoutItem::removeFromParentLayout (  )  [inherited]

Definition at line 83 of file KDChartLayoutItems.h.

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

00084         {
00085             if( mParentLayout ){
00086                 if( widget() )
00087                     mParentLayout->removeWidget( widget() );
00088                 else
00089                     mParentLayout->removeItem( this );
00090             }
00091         }

void KDChart::LineLayoutItem::setGeometry ( const QRect &  r  )  [virtual]

Definition at line 902 of file KDChartLayoutItems.cpp.

00903 {
00904     mRect = r;
00905 }

void KDChart::AbstractLayoutItem::setParentLayout ( QLayout *  lay  )  [inherited]

Definition at line 75 of file KDChartLayoutItems.h.

00076         {
00077             mParentLayout = lay;
00078         }

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().

00066 {
00067     mParent = widget;
00068 }

QSize KDChart::LineLayoutItem::sizeHint (  )  const [virtual]

Definition at line 907 of file KDChartLayoutItems.cpp.

Referenced by maximumSize(), and minimumSize().

00908 {
00909     return QSize( mLength, mPen.width()+2 );
00910 }

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().

00088 {
00089     // This is exactly like what QWidget::updateGeometry does.
00090 //  qDebug("KDChart::AbstractLayoutItem::sizeHintChanged() called");
00091     if( mParent ) {
00092         if ( mParent->layout() )
00093             mParent->layout()->invalidate();
00094         else
00095             QApplication::postEvent( mParent, new QEvent( QEvent::LayoutRequest ) );
00096     }
00097 }


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().


The documentation for this class was generated from the following files:
Generated on Thu Mar 4 23:26:09 2010 for KD Chart 2 by  doxygen 1.5.4