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KDChart::LineLayoutItem Class Reference

#include <KDChartLayoutItems.h>

Inheritance diagram for KDChart::LineLayoutItem:

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Collaboration diagram for KDChart::LineLayoutItem:
[legend]
List of all members.

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

void paintIntoRect (QPainter *painter, const QRect &rect, const QPen &pen)

Protected Attributes

QWidgetmParent
QLayout * mParentLayout

Constructor & Destructor Documentation

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

Definition at line 612 of file KDChartLayoutItems.cpp.

00616     : AbstractLayoutItem( alignment )
00617     , mDiagram( diagram )
00618     , mLength( length )
00619     , mPen( pen )
00620 {
00621     //have a mini pen width
00622     if ( pen.width() < 2 )
00623         mPen.setWidth( 2 );
00624 }


Member Function Documentation

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

Definition at line 626 of file KDChartLayoutItems.cpp.

00627 {
00628     return 0; // Grow neither vertically nor horizontally
00629 }

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

Definition at line 631 of file KDChartLayoutItems.cpp.

00632 {
00633     return mRect;
00634 }

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

Definition at line 636 of file KDChartLayoutItems.cpp.

00637 {
00638     return false; // never empty, otherwise the layout item would not exist
00639 }

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

Definition at line 641 of file KDChartLayoutItems.cpp.

References sizeHint().

00642 {
00643     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00644 }

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

Definition at line 646 of file KDChartLayoutItems.cpp.

References sizeHint().

00647 {
00648     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00649 }

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

Implements KDChart::AbstractLayoutItem.

Definition at line 661 of file KDChartLayoutItems.cpp.

References paintIntoRect().

00662 {
00663     paintIntoRect( painter, mRect, mPen );
00664 }

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, and KDChart::TextArea.

Definition at line 69 of file KDChartLayoutItems.cpp.

References KDChart::AbstractLayoutItem::paint().

00070 {
00071     paint( &painter );
00072 }

void KDChart::AbstractLayoutItem::paintCtx PaintContext context  )  [virtual, inherited]
 

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

Reimplemented in KDChart::CartesianAxis.

Definition at line 77 of file KDChartLayoutItems.cpp.

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

00078 {
00079     if( context )
00080         paint( context->painter() );
00081 }

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

Definition at line 666 of file KDChartLayoutItems.cpp.

Referenced by paint().

00670 {
00671     if( ! rect.isValid() )
00672         return;
00673 
00674     const QPen oldPen = painter->pen();
00675     painter->setPen( pen );
00676     const qreal y = rect.center().y();
00677     painter->drawLine( QPointF( rect.left(), y ),
00678                        QPointF( rect.right(), y ) );
00679     painter->setPen( oldPen );
00680 }

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

Definition at line 74 of file KDChartLayoutItems.h.

00075         {
00076             return mParentLayout;
00077         }

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

Definition at line 78 of file KDChartLayoutItems.h.

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

00079         {
00080             if( mParentLayout ){
00081                 if( widget() )
00082                     mParentLayout->removeWidget( widget() );
00083                 else
00084                     mParentLayout->removeItem( this );
00085             }
00086         }

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

Definition at line 651 of file KDChartLayoutItems.cpp.

00652 {
00653     mRect = r;
00654 }

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

Definition at line 70 of file KDChartLayoutItems.h.

00071         {
00072             mParentLayout = lay;
00073         }

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 64 of file KDChartLayoutItems.cpp.

References KDChart::AbstractLayoutItem::mParent.

Referenced by KDChart::Legend::buildLegend(), and KDChart::AbstractCartesianDiagram::takeAxis().

00065 {
00066     mParent = widget;
00067 }

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

Definition at line 656 of file KDChartLayoutItems.cpp.

Referenced by maximumSize(), and minimumSize().

00657 {
00658     return QSize( mLength, mPen.width()+2 );
00659 }

void KDChart::AbstractLayoutItem::sizeHintChanged  )  const [virtual, inherited]
 

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

Definition at line 86 of file KDChartLayoutItems.cpp.

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

00087 {
00088     // This is exactly like what QWidget::updateGeometry does.
00089 //  qDebug("KDChart::AbstractLayoutItem::sizeHintChanged() called");
00090     if( mParent ) {
00091         if ( mParent->layout() )
00092             mParent->layout()->invalidate();
00093         else
00094             QApplication::postEvent( mParent, new QEvent( QEvent::LayoutRequest ) );
00095     }
00096 }


Member Data Documentation

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

Definition at line 88 of file KDChartLayoutItems.h.

Referenced by KDChart::AbstractLayoutItem::setParentWidget().

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

Definition at line 89 of file KDChartLayoutItems.h.


The documentation for this class was generated from the following files:
Generated on Thu May 10 11:06:33 2007 for KD Chart 2 by doxygen 1.3.6