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

Definition at line 616 of file KDChartLayoutItems.cpp.

00620     : AbstractLayoutItem( alignment )
00621     , mDiagram( diagram )
00622     , mLength( length )
00623     , mPen( pen )
00624 {
00625     //have a mini pen width
00626     if ( pen.width() < 2 )
00627         mPen.setWidth( 2 );
00628 }


Member Function Documentation

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

Definition at line 630 of file KDChartLayoutItems.cpp.

00631 {
00632     return 0; // Grow neither vertically nor horizontally
00633 }

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

Definition at line 635 of file KDChartLayoutItems.cpp.

00636 {
00637     return mRect;
00638 }

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

Definition at line 640 of file KDChartLayoutItems.cpp.

00641 {
00642     return false; // never empty, otherwise the layout item would not exist
00643 }

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

Definition at line 645 of file KDChartLayoutItems.cpp.

References sizeHint().

00646 {
00647     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00648 }

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

Definition at line 650 of file KDChartLayoutItems.cpp.

References sizeHint().

00651 {
00652     return sizeHint(); // PENDING(kalle) Review, quite inflexible
00653 }

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

Implements KDChart::AbstractLayoutItem.

Definition at line 665 of file KDChartLayoutItems.cpp.

References paintIntoRect().

00666 {
00667     paintIntoRect( painter, mRect, mPen );
00668 }

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 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, and KDChart::TernaryAxis.

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 670 of file KDChartLayoutItems.cpp.

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

00674 {
00675     if( ! rect.isValid() )
00676         return;
00677 
00678     const QPen oldPen = painter->pen();
00679     painter->setPen( pen );
00680     const qreal y = rect.center().y();
00681     painter->drawLine( QPointF( rect.left(), y ),
00682                        QPointF( rect.right(), y ) );
00683     painter->setPen( oldPen );
00684 }

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

Definition at line 76 of file KDChartLayoutItems.h.

00077         {
00078             return mParentLayout;
00079         }

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

Definition at line 80 of file KDChartLayoutItems.h.

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

00081         {
00082             if( mParentLayout ){
00083                 if( widget() )
00084                     mParentLayout->removeWidget( widget() );
00085                 else
00086                     mParentLayout->removeItem( this );
00087             }
00088         }

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

Definition at line 655 of file KDChartLayoutItems.cpp.

00656 {
00657     mRect = r;
00658 }

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

Definition at line 72 of file KDChartLayoutItems.h.

00073         {
00074             mParentLayout = lay;
00075         }

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

00065 {
00066     mParent = widget;
00067 }

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

Definition at line 660 of file KDChartLayoutItems.cpp.

Referenced by maximumSize(), and minimumSize().

00661 {
00662     return QSize( mLength, mPen.width()+2 );
00663 }

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.

References KDChart::AbstractLayoutItem::mParent.

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 90 of file KDChartLayoutItems.h.

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

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

Definition at line 91 of file KDChartLayoutItems.h.

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


The documentation for this class was generated from the following files:
Generated on Mon Sep 17 16:18:20 2007 for KD Chart 2 by  doxygen 1.5.1