10 #include "qwt_plot_barchart.h" 
   11 #include "qwt_scale_map.h" 
   12 #include "qwt_column_symbol.h" 
   14 #include "qwt_graphic.h" 
   15 #include "qwt_legend_data.h" 
   19 class QwtPlotBarChart::PrivateData
 
   63 void QwtPlotBarChart::init()
 
   65     m_data = 
new PrivateData;
 
  101     points.reserve( samples.size() );
 
  103     for ( 
int i = 0; i < samples.size(); i++ )
 
  104         points += QPointF( i, samples[ i ] );
 
  136     if ( 
symbol != m_data->symbol )
 
  138         delete m_data->symbol;
 
  152     return m_data->symbol;
 
  166     if ( mode != m_data->legendMode )
 
  168         m_data->legendMode = mode;
 
  179     return m_data->legendMode;
 
  188     const size_t numSamples = 
dataSize();
 
  189     if ( numSamples == 0 )
 
  193     if ( rect.height() >= 0 )
 
  197         if ( rect.bottom() < baseLine )
 
  198             rect.setBottom( baseLine );
 
  200         if ( rect.top() > baseLine )
 
  201             rect.setTop( baseLine );
 
  205         rect.setRect( rect.y(), rect.x(), rect.height(), rect.width() );
 
  225     const QRectF& canvasRect, 
int from, 
int to )
 const 
  238     const QwtInterval interval( br.left(), br.right() );
 
  242     for ( 
int i = from; i <= to; i++ )
 
  245             canvasRect, interval, i, 
sample( i ) );
 
  264     const QRectF& canvasRect, 
const QwtInterval& boundingInterval,
 
  265     const QPointF& sample )
 const 
  271         const double barHeight = 
sampleWidth( yMap, canvasRect.height(),
 
  278         const double y1 = y - 0.5 * barHeight;
 
  279         const double y2 = y + 0.5 * barHeight;
 
  289         const double barWidth = 
sampleWidth( xMap, canvasRect.width(),
 
  293         const double x1 = x - 0.5 * barWidth;
 
  294         const double x2 = x + 0.5 * barWidth;
 
  324     const QRectF& canvasRect, 
const QwtInterval& boundingInterval,
 
  325     int index, 
const QPointF& sample )
 const 
  328         canvasRect, boundingInterval, 
sample );
 
  342     int sampleIndex, 
const QPointF& sample,
 
  350         sym = m_data->symbol;
 
  354         sym->
draw( painter, rect );
 
  362         columnSymbol.
draw( painter, rect );
 
  378     int sampleIndex, 
const QPointF& sample )
 const 
  380     Q_UNUSED( sampleIndex );
 
  401     Q_UNUSED( sampleIndex );
 
  422         const size_t numSamples = 
dataSize();
 
  423         list.reserve( numSamples );
 
  425         for ( 
size_t i = 0; i < numSamples; i++ )
 
  429             data.setValue( QwtLegendData::TitleRole,
 
  430                 QVariant::fromValue( 
barTitle( i ) ) );
 
  434                 data.setValue( QwtLegendData::IconRole,
 
  463     int index, 
const QSizeF& size )
 const 
  473     QPainter painter( &icon );
 
  474     painter.setRenderHint( QPainter::Antialiasing,
 
  481     drawBar( &painter, barIndex, QPointF(), column );
 
Directed rectangle representing bounding rectangle and orientation of a column.
QwtInterval vInterval
Interval for the vertical coordinates.
QwtInterval hInterval
Interval for the horizontal coordinates.
@ LeftToRight
From left to right.
@ TopToBottom
From top to bottom.
@ BottomToTop
From bottom to top.
@ RightToLeft
From right to left.
Direction direction
Direction.
A drawing primitive for columns.
@ Plain
A plain frame style.
virtual void draw(QPainter *, const QwtColumnRect &) const
void setFrameStyle(FrameStyle)
void setLineWidth(int width)
A paint device for scalable graphics.
void setRenderHint(RenderHint, bool on=true)
void setDefaultSize(const QSizeF &)
Set a default size.
A class representing an interval.
QwtInterval normalized() const
Normalize the limits of the interval.
double width() const
Return the width of an interval.
Attributes of an entry on a legend.
Abstract base class for bar chart items.
double sampleWidth(const QwtScaleMap &map, double canvasSize, double boundingSize, double value) const
QwtPlotBarChart displays a series of a values as bars.
QwtPlotBarChart(const QString &title=QString())
void setLegendMode(LegendMode)
LegendMode legendMode() const
void setSymbol(QwtColumnSymbol *)
Assign a symbol.
virtual QwtColumnSymbol * specialSymbol(int sampleIndex, const QPointF &) const
QList< QwtLegendData > legendData() const override
Return all information, that is needed to represent the item on the legend.
void setSamples(const QVector< QPointF > &)
virtual void drawSeries(QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const override
virtual int rtti() const override
virtual QwtText barTitle(int sampleIndex) const
Return the title of a bar.
const QwtColumnSymbol * symbol() const
virtual void drawBar(QPainter *, int sampleIndex, const QPointF &sample, const QwtColumnRect &) const
QwtColumnRect columnRect(const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, const QwtInterval &boundingInterval, const QPointF &sample) const
virtual ~QwtPlotBarChart()
Destructor.
virtual QRectF boundingRect() const override
QwtGraphic legendIcon(int index, const QSizeF &) const override
virtual void drawSample(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, const QwtInterval &boundingInterval, int index, const QPointF &sample) const
virtual QList< QwtLegendData > legendData() const
Return all information, that is needed to represent the item on the legend.
virtual void legendChanged()
@ Rtti_PlotBarChart
For QwtPlotBarChart.
@ RenderAntialiased
Enable antialiasing.
bool testRenderHint(RenderHint) const
virtual void itemChanged()
QSize legendIconSize() const
Qt::Orientation orientation() const
virtual QRectF boundingRect() const override
Interface for iterating over an array of points.
double transform(double s) const
virtual QRectF boundingRect() const =0
QPointF sample(int index) const
virtual size_t dataSize() const override
QwtSeriesData< QPointF > * data()
void setData(QwtSeriesData< QPointF > *series)
A class representing a text.