Signals | Public Member Functions | Protected Member Functions | Properties

KDChart::Chart Class Reference

A chart with one or more diagrams. More...

#include <KDChartChart>

Inheritance diagram for KDChart::Chart:
Inheritance graph
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Collaboration diagram for KDChart::Chart:
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List of all members.

Signals

void propertiesChanged ()
 Emitted upon change of a property of the Chart or any of its components.

Public Member Functions

void addCoordinatePlane (AbstractCoordinatePlane *plane)
 Adds a coordinate plane to the chart.
void addHeaderFooter (HeaderFooter *headerFooter)
 Adds a header or a footer to the chart.
void addLegend (Legend *legend)
 Add the given legend to the chart.
BackgroundAttributes backgroundAttributes () const
 Chart (QWidget *parent=0)
AbstractCoordinatePlanecoordinatePlane ()
 Each chart must have at least one coordinate plane.
QLayout * coordinatePlaneLayout ()
CoordinatePlaneList coordinatePlanes ()
 The list of coordinate planes.
FrameAttributes frameAttributes () const
int globalLeadingBottom () const
 The padding between the start of the widget and the start of the area that is used for drawing at the bottom.
int globalLeadingLeft () const
 The padding between the start of the widget and the start of the area that is used for drawing on the left.
int globalLeadingRight () const
 The padding between the start of the widget and the start of the area that is used for drawing on the right.
int globalLeadingTop () const
 The padding between the start of the widget and the start of the area that is used for drawing at the top.
HeaderFooterheaderFooter ()
 The first header or footer of the chart.
HeaderFooterList headerFooters ()
 The list of headers and footers associated with the chart.
Legendlegend ()
 The first legend of the chart or 0 if there was none added to the chart.
LegendList legends ()
 The list of all legends associated with the chart.
void paint (QPainter *painter, const QRect &target)
 Paints all the contents of the chart.
void reLayoutFloatingLegends ()
void replaceCoordinatePlane (AbstractCoordinatePlane *plane, AbstractCoordinatePlane *oldPlane=0)
 Replaces the old coordinate plane, or appends the plane, it there is none yet.
void replaceHeaderFooter (HeaderFooter *headerFooter, HeaderFooter *oldHeaderFooter=0)
 Replaces the old header (or footer, resp.
void replaceLegend (Legend *legend, Legend *oldLegend=0)
 Replaces the old legend, or appends the new legend, it there is none yet.
void setBackgroundAttributes (const BackgroundAttributes &a)
 Specify the background attributes to be used, by default there is no background.
void setCoordinatePlaneLayout (QLayout *layout)
 Set the coordinate plane layout that should be used as model for the internal used layout.
void setFrameAttributes (const FrameAttributes &a)
 Specify the frame attributes to be used, by default is it a thin black line.
void setGlobalLeading (int left, int top, int right, int bottom)
 Set the padding between the margin of the widget and the area that the contents are drawn into.
void setGlobalLeadingBottom (int leading)
 Set the padding between the start of the widget and the start of the area that is used for drawing on the bottom.
void setGlobalLeadingLeft (int leading)
 Set the padding between the start of the widget and the start of the area that is used for drawing on the left.
void setGlobalLeadingRight (int leading)
 Set the padding between the start of the widget and the start of the area that is used for drawing on the right.
void setGlobalLeadingTop (int leading)
 Set the padding between the start of the widget and the start of the area that is used for drawing at the top.
void takeCoordinatePlane (AbstractCoordinatePlane *plane)
 Removes the coordinate plane from the chart, without deleting it.
void takeHeaderFooter (HeaderFooter *headerFooter)
 Removes the header (or footer, resp.
void takeLegend (Legend *legend)
 Removes the legend from the chart, without deleting it.
 ~Chart ()

Protected Member Functions

bool event (QEvent *event)
 reimp
void mouseDoubleClickEvent (QMouseEvent *event)
 reimp
void mouseMoveEvent (QMouseEvent *event)
 reimp
void mousePressEvent (QMouseEvent *event)
 reimp
void mouseReleaseEvent (QMouseEvent *event)
 reimp
void paintEvent (QPaintEvent *event)
 Draws the background and frame, then calls paint().
void resizeEvent (QResizeEvent *event)
 Adjusts the internal layout when the chart is resized.

Properties

int globalLeadingBottom
int globalLeadingLeft
int globalLeadingRight
int globalLeadingTop

Detailed Description

A chart with one or more diagrams.

The Chart class represents a drawing consisting of one or more diagrams and various optional elements such as legends, axes, text boxes, headers or footers. It takes ownership of all these elements when they are assigned to it. Each diagram is associated with a coordinate plane, of which the chart can have more than one. The coordinate planes (and thus the associated diagrams) can be laid out in various ways.

The Chart class makes heavy use of the Qt Interview framework for model/view programming, and thus requires data to be presented to it in a QAbstractItemModel compatible way. For many simple charts, especially if the visualized data is static, KDChart::Widget provides an abstracted interface, that hides the complexity of Interview to a large extent.

Definition at line 69 of file KDChartChart.h.


Constructor & Destructor Documentation

Chart::Chart ( QWidget parent = 0  )  [explicit]
Chart::~Chart (  ) 

Definition at line 889 of file KDChartChart.cpp.


Member Function Documentation

void Chart::addCoordinatePlane ( AbstractCoordinatePlane plane  ) 

Adds a coordinate plane to the chart.

The chart takes ownership.

Parameters:
plane The coordinate plane to add.
See also:
replaceCoordinatePlane, takeCoordinatePlane

Definition at line 945 of file KDChartChart.cpp.

References d, propertiesChanged(), and KDChart::AbstractCoordinatePlane::setParent().

Referenced by Chart(), and replaceCoordinatePlane().

void Chart::addHeaderFooter ( HeaderFooter headerFooter  ) 

Adds a header or a footer to the chart.

The chart takes ownership.

Parameters:
headerFooter The header (or footer, resp.) to add.
See also:
replaceHeaderFooter, takeHeaderFooter

Definition at line 1165 of file KDChartChart.cpp.

References d, and KDChart::HeaderFooter::setParent().

Referenced by replaceHeaderFooter().

void Chart::addLegend ( Legend legend  ) 
BackgroundAttributes Chart::backgroundAttributes (  )  const

Definition at line 911 of file KDChartChart.cpp.

References d.

AbstractCoordinatePlane * Chart::coordinatePlane (  ) 

Each chart must have at least one coordinate plane.

Initially a default CartesianCoordinatePlane is created. Use replaceCoordinatePlane() to replace it with a different one, such as a PolarCoordinatePlane.

Returns:
The first coordinate plane of the chart.

Definition at line 929 of file KDChartChart.cpp.

References d.

QLayout * Chart::coordinatePlaneLayout (  ) 

Definition at line 924 of file KDChartChart.cpp.

References d.

CoordinatePlaneList Chart::coordinatePlanes (  ) 

The list of coordinate planes.

Returns:
The list of coordinate planes.

Definition at line 940 of file KDChartChart.cpp.

References d.

bool Chart::event ( QEvent *  event  )  [protected]

reimp

Definition at line 1590 of file KDChartChart.cpp.

References d, and KDChart::AbstractCoordinatePlane::diagrams().

FrameAttributes Chart::frameAttributes (  )  const

Definition at line 901 of file KDChartChart.cpp.

References d.

int KDChart::Chart::globalLeadingBottom (  )  const

The padding between the start of the widget and the start of the area that is used for drawing at the bottom.

Returns:
The padding between the start of the widget and the start of the area that is used for drawing at the bottom.
See also:
setGlobalLeading
int KDChart::Chart::globalLeadingLeft (  )  const

The padding between the start of the widget and the start of the area that is used for drawing on the left.

Returns:
The padding between the start of the widget and the start of the area that is used for drawing on the left.
See also:
setGlobalLeading
int KDChart::Chart::globalLeadingRight (  )  const

The padding between the start of the widget and the start of the area that is used for drawing on the right.

Returns:
The padding between the start of the widget and the start of the area that is used for drawing on the right.
See also:
setGlobalLeading
int KDChart::Chart::globalLeadingTop (  )  const

The padding between the start of the widget and the start of the area that is used for drawing at the top.

Returns:
The padding between the start of the widget and the start of the area that is used for drawing at the top.
See also:
setGlobalLeading
HeaderFooter * Chart::headerFooter (  ) 

The first header or footer of the chart.

By default there is none.

Returns:
The first header or footer of the chart or 0 if there was none added to the chart.

Definition at line 1209 of file KDChartChart.cpp.

References d.

HeaderFooterList Chart::headerFooters (  ) 

The list of headers and footers associated with the chart.

Returns:
The list of headers and footers associated with the chart.

Definition at line 1218 of file KDChartChart.cpp.

References d.

Legend * Chart::legend (  ) 

The first legend of the chart or 0 if there was none added to the chart.

Returns:
The first legend of the chart or 0 if none exists.

Definition at line 1310 of file KDChartChart.cpp.

References d.

LegendList Chart::legends (  ) 

The list of all legends associated with the chart.

Returns:
The list of all legends associated with the chart.

Definition at line 1320 of file KDChartChart.cpp.

References d.

void Chart::mouseDoubleClickEvent ( QMouseEvent *  event  )  [protected]
void Chart::mouseMoveEvent ( QMouseEvent *  event  )  [protected]
void Chart::mousePressEvent ( QMouseEvent *  event  )  [protected]
void Chart::mouseReleaseEvent ( QMouseEvent *  event  )  [protected]
void Chart::paint ( QPainter *  painter,
const QRect &  target 
)

Paints all the contents of the chart.

Use this method, to make KDChart draw into your QPainter.

Note:
Any global leading settings will be used by the paint method too, so make sure to set them to zero, if you want the drawing to have the exact size of the target rectangle.
Parameters:
painter The painter to be drawn into.
target The rectangle to be filled by the Chart's drawing.
See also:
setGlobalLeading

Definition at line 1045 of file KDChartChart.cpp.

References d, KDChart::GlobalMeasureScaling::instance(), KDChart::GlobalMeasureScaling::paintDevice(), KDChart::AbstractAreaWidget::paintIntoRect(), KDChart::GlobalMeasureScaling::resetFactors(), KDChart::PrintingParameters::resetScaleFactor(), KDChart::GlobalMeasureScaling::setFactors(), KDChart::GlobalMeasureScaling::setPaintDevice(), and KDChart::PrintingParameters::setScaleFactor().

void Chart::paintEvent ( QPaintEvent *  event  )  [protected]

Draws the background and frame, then calls paint().

In most cases there is no need to override this method in a derived class, but if you do, do not forget to call paint().

See also:
paint

Definition at line 1151 of file KDChartChart.cpp.

References d, and reLayoutFloatingLegends().

void KDChart::Chart::propertiesChanged (  )  [signal]

Emitted upon change of a property of the Chart or any of its components.

Referenced by addCoordinatePlane(), addLegend(), takeCoordinatePlane(), takeHeaderFooter(), and takeLegend().

void Chart::reLayoutFloatingLegends (  ) 
void Chart::replaceCoordinatePlane ( AbstractCoordinatePlane plane,
AbstractCoordinatePlane oldPlane = 0 
)

Replaces the old coordinate plane, or appends the plane, it there is none yet.

Parameters:
plane The coordinate plane to be used instead of the old plane. This parameter must not be zero, or the method will do nothing.
oldPlane The coordinate plane to be removed by the new plane. This plane will be deleted automatically. If the parameter is omitted, the very first coordinate plane will be replaced. In case, there was no plane yet, the new plane will just be added.
Note:
If you want to re-use the old coordinate plane, call takeCoordinatePlane and addCoordinatePlane, instead of using replaceCoordinatePlane.
See also:
addCoordinatePlane, takeCoordinatePlane

Definition at line 958 of file KDChartChart.cpp.

References addCoordinatePlane(), d, and takeCoordinatePlane().

void Chart::replaceHeaderFooter ( HeaderFooter headerFooter,
HeaderFooter oldHeaderFooter = 0 
)

Replaces the old header (or footer, resp.

), or appends the new header or footer, it there is none yet.

Parameters:
headerFooter The header or footer to be used instead of the old one. This parameter must not be zero, or the method will do nothing.
oldHeaderFooter The header or footer to be removed by the new one. This header or footer will be deleted automatically. If the parameter is omitted, the very first header or footer will be replaced. In case, there was no header and no footer yet, the new header or footer will just be added.
Note:
If you want to re-use the old header or footer, call takeHeaderFooter and addHeaderFooter, instead of using replaceHeaderFooter.
See also:
addHeaderFooter, takeHeaderFooter

Definition at line 1176 of file KDChartChart.cpp.

References addHeaderFooter(), d, and takeHeaderFooter().

void Chart::replaceLegend ( Legend legend,
Legend oldLegend = 0 
)

Replaces the old legend, or appends the new legend, it there is none yet.

Parameters:
legend The legend to be used instead of the old one. This parameter must not be zero, or the method will do nothing.
oldLegend The legend to be removed by the new one. This legend will be deleted automatically. If the parameter is omitted, the very first legend will be replaced. In case, there was no legend yet, the new legend will just be added.

If you want to re-use the old legend, call takeLegend and addLegend, instead of using replaceLegend.

Note:
Whenever addLegend is called the font sizes used by the Legend are set to relative and they get coupled to the Chart's size, with their relative values being 20 for the item texts and 24 to the title text. So if you want to use custom font sizes for the Legend make sure to set them after calling addLegend.
See also:
addLegend, takeLegend

Definition at line 1270 of file KDChartChart.cpp.

References addLegend(), d, and takeLegend().

void Chart::resizeEvent ( QResizeEvent *  event  )  [protected]

Adjusts the internal layout when the chart is resized.

Definition at line 1109 of file KDChartChart.cpp.

References d, reLayoutFloatingLegends(), and KDChart::AbstractCoordinatePlane::setGridNeedsRecalculate().

void Chart::setBackgroundAttributes ( const BackgroundAttributes a  ) 

Specify the background attributes to be used, by default there is no background.

To set a light blue background, you could do something like this:

          KDChart::BackgroundAttributes backgroundAttrs( my_chart->backgroundAttributes() );
          backgroundAttrs.setVisible( true );
          backgroundAttrs.setBrush( QColor(0xd0,0xd0,0xff) );
          my_chart->setBackgroundAttributes( backgroundAttrs );
          
See also:
setFrameAttributes

Definition at line 906 of file KDChartChart.cpp.

References d.

void Chart::setCoordinatePlaneLayout ( QLayout *  layout  ) 

Set the coordinate plane layout that should be used as model for the internal used layout.

The layout needs to be an instance of QHBoxLayout or QVBoxLayout.

Definition at line 917 of file KDChartChart.cpp.

References d.

void Chart::setFrameAttributes ( const FrameAttributes a  ) 

Specify the frame attributes to be used, by default is it a thin black line.

To hide the frame line, you could do something like this:

          KDChart::FrameAttributes frameAttrs( my_chart->frameAttributes() );
          frameAttrs.setVisible( false );
          my_chart->setFrameAttributes( frameAttrs );
          
See also:
setBackgroundAttributes

Definition at line 896 of file KDChartChart.cpp.

References d.

Referenced by Chart().

void Chart::setGlobalLeading ( int  left,
int  top,
int  right,
int  bottom 
)

Set the padding between the margin of the widget and the area that the contents are drawn into.

Parameters:
left The padding on the left side.
top The padding at the top.
right The padding on the left hand side.
bottom The padding on the bottom.
Note:
Using previous versions of KD Chart you might have called setGlobalLeading() to make room for long Abscissa labels (or for an overlapping top label of an Ordinate axis, resp.) that would not fit into the normal axis area. This is no longer needed because KD Chart now is using hidden auto-spacer items reserving as much free space as is needed for axes with overlaping content at the respective sides.
See also:
setGlobalLeadingTop, setGlobalLeadingBottom, setGlobalLeadingLeft, setGlobalLeadingRight
globalLeadingTop, globalLeadingBottom, globalLeadingLeft, globalLeadingRight

Definition at line 992 of file KDChartChart.cpp.

References d, setGlobalLeadingBottom(), setGlobalLeadingLeft(), setGlobalLeadingRight(), and setGlobalLeadingTop().

void Chart::setGlobalLeadingBottom ( int  leading  ) 

Set the padding between the start of the widget and the start of the area that is used for drawing on the bottom.

Parameters:
leading The padding value.
See also:
setGlobalLeading

Definition at line 1034 of file KDChartChart.cpp.

References d.

Referenced by setGlobalLeading().

void Chart::setGlobalLeadingLeft ( int  leading  ) 

Set the padding between the start of the widget and the start of the area that is used for drawing on the left.

Parameters:
leading The padding value.
See also:
setGlobalLeading

Definition at line 1001 of file KDChartChart.cpp.

References d.

Referenced by setGlobalLeading().

void Chart::setGlobalLeadingRight ( int  leading  ) 

Set the padding between the start of the widget and the start of the area that is used for drawing on the right.

Parameters:
leading The padding value.
See also:
setGlobalLeading

Definition at line 1023 of file KDChartChart.cpp.

References d.

Referenced by setGlobalLeading().

void Chart::setGlobalLeadingTop ( int  leading  ) 

Set the padding between the start of the widget and the start of the area that is used for drawing at the top.

Parameters:
leading The padding value.
See also:
setGlobalLeading

Definition at line 1012 of file KDChartChart.cpp.

References d.

Referenced by setGlobalLeading().

void Chart::takeCoordinatePlane ( AbstractCoordinatePlane plane  ) 

Removes the coordinate plane from the chart, without deleting it.

The chart no longer owns the plane, so it is the caller's responsibility to delete the plane.

See also:
addCoordinatePlane, takeCoordinatePlane

Definition at line 976 of file KDChartChart.cpp.

References d, propertiesChanged(), KDChart::AbstractLayoutItem::removeFromParentLayout(), and KDChart::AbstractCoordinatePlane::setParent().

Referenced by replaceCoordinatePlane().

void Chart::takeHeaderFooter ( HeaderFooter headerFooter  ) 

Removes the header (or footer, resp.

) from the chart, without deleting it.

The chart no longer owns the header or footer, so it is the caller's responsibility to delete the header or footer.

See also:
addHeaderFooter, replaceHeaderFooter

Definition at line 1194 of file KDChartChart.cpp.

References d, propertiesChanged(), and KDChart::HeaderFooter::setParent().

Referenced by replaceHeaderFooter().

void Chart::takeLegend ( Legend legend  ) 

Removes the legend from the chart, without deleting it.

The chart no longer owns the legend, so it is the caller's responsibility to delete the legend.

See also:
addLegend, takeLegend

Definition at line 1287 of file KDChartChart.cpp.

References d, propertiesChanged(), and KDChart::Legend::setVisible().

Referenced by replaceLegend().


Property Documentation

int Chart::globalLeadingBottom [read, write]

Definition at line 73 of file KDChartChart.h.

int Chart::globalLeadingLeft [read, write]

Definition at line 74 of file KDChartChart.h.

int Chart::globalLeadingRight [read, write]

Definition at line 75 of file KDChartChart.h.

int Chart::globalLeadingTop [read, write]

Definition at line 72 of file KDChartChart.h.


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