QwtPlotAbstractBarChart类 参考

条形图项的抽象基类 更多...

#include <qwt_plot_abstract_barchart.h>

类 QwtPlotAbstractBarChart 继承关系图:

类
class	PrivateData

Public 类型
enum	LayoutPolicy { AutoAdjustSamples , ScaleSamplesToAxes , ScaleSampleToCanvas , FixedSampleSize }
	Mode how to calculate the bar width 更多...
Public 类型 继承自 QwtPlotItem
enum	RttiValues {   Rtti_PlotItem = 0 , Rtti_PlotGrid , Rtti_PlotScale , Rtti_PlotLegend ,   Rtti_PlotMarker , Rtti_PlotCurve , Rtti_PlotSpectroCurve , Rtti_PlotIntervalCurve ,   Rtti_PlotHistogram , Rtti_PlotSpectrogram , Rtti_PlotGraphic , Rtti_PlotTradingCurve ,   Rtti_PlotBarChart , Rtti_PlotMultiBarChart , Rtti_PlotShape , Rtti_PlotTextLabel ,   Rtti_PlotZone , Rtti_PlotVectorField , Rtti_PlotArrowMarker , Rtti_PlotBoxChart ,   Rtti_PlotUserItem = 1000 }
	运行时类型信息 更多...
enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	绘图项属性 更多...
enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	绘图项关注的事件类型 更多...
enum	RenderHint { RenderAntialiased = 0x1 }
	渲染提示 更多...

Public 成员函数
	QwtPlotAbstractBarChart (const QwtText &title)
	构造函数
virtual	~QwtPlotAbstractBarChart ()
	析构函数
void	setLayoutPolicy (LayoutPolicy)
	设置布局策略
LayoutPolicy	layoutPolicy () const
	获取布局策略
void	setLayoutHint (double)
	设置布局提示
double	layoutHint () const
	获取布局提示
void	setSpacing (int)
	设置条形之间的间距
int	spacing () const
	获取条形之间的间距
void	setMargin (int)
	设置条形周围的边距
int	margin () const
	获取条形周围的边距
void	setBaseline (double)
	设置基线值
double	baseline () const
	获取基线值
virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const override
	计算画布边距的提示
Public 成员函数 继承自 QwtPlotSeriesItem
	QwtPlotSeriesItem (const QString &title=QString())
	构造函数
	QwtPlotSeriesItem (const QwtText &title)
	构造函数
virtual	~QwtPlotSeriesItem ()
	析构函数
void	setOrientation (Qt::Orientation)
	设置绘图项的方向
Qt::Orientation	orientation () const
	获取绘图项的方向
virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
	绘制完整系列
virtual void	drawSeries (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const =0
	绘制样本的子集
virtual QRectF	boundingRect () const override
	获取边界矩形
virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) override
	更新刻度划分
Public 成员函数 继承自 QwtPlotItem
	QwtPlotItem ()
	Default constructor
	QwtPlotItem (const QString &title)
	Constructor with title as QString
	QwtPlotItem (const QwtText &title)
	Constructor with title as QwtText
virtual	~QwtPlotItem ()
	Destructor
void	attach (QwtPlot *plot)
	Attach the item to a plot
void	detach ()
	Detach the item from the plot
QwtPlot *	plot () const
	Get the plot the item is attached to
void	setTitle (const QString &title)
	Set the title using a QString
void	setTitle (const QwtText &title)
	Set the title using a QwtText
const QwtText &	title () const
	Get the title
virtual int	rtti () const
	Runtime type information
void	setItemAttribute (ItemAttribute, bool on=true)
	Set an item attribute
bool	testItemAttribute (ItemAttribute) const
	Test an item attribute
void	setItemInterest (ItemInterest, bool on=true)
	Set an item interest
bool	testItemInterest (ItemInterest) const
	Test an item interest
void	setRenderHint (RenderHint, bool on=true)
	Set a render hint
bool	testRenderHint (RenderHint) const
	Test a render hint
void	setRenderThreadCount (uint numThreads)
	Set the number of render threads
uint	renderThreadCount () const
	Get the number of render threads
void	setLegendIconSize (const QSize &)
	Set the legend icon size
QSize	legendIconSize () const
	Get the legend icon size
double	z () const
	Get the z-value
void	setZ (double z)
	Set the z-value
void	show ()
	Show the item
void	hide ()
	Hide the item
virtual void	setVisible (bool)
	Set the visibility
bool	isVisible () const
	Check if the item is visible
void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
	Set both axes
void	setXAxis (QwtAxisId)
	Set the x-axis
QwtAxisId	xAxis () const
	Get the x-axis
void	setYAxis (QwtAxisId)
	Set the y-axis
QwtAxisId	yAxis () const
	Get the y-axis
virtual void	itemChanged ()
	Notify the plot that the item has changed
virtual void	legendChanged ()
	Notify the item that the legend has changed
virtual void	updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &)
	Update the item with changes of the legend
QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the scale rectangle
QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the paint rectangle
virtual QList< QwtLegendData >	legendData () const
	Return legend data
virtual QwtGraphic	legendIcon (int index, const QSizeF &) const
	Return a legend icon

Protected 成员函数
double	sampleWidth (const QwtScaleMap &map, double canvasSize, double boundingSize, double value) const
	Calculate the width for a sample in paint device coordinates
Protected 成员函数 继承自 QwtPlotSeriesItem
virtual void	dataChanged () override
	dataChanged() indicates, that the series has been changed.
Protected 成员函数 继承自 QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default icon
Protected 成员函数 继承自 QwtAbstractSeriesStore
virtual void	setRectOfInterest (const QRectF &)=0
	Set a the "rectangle of interest" for the stored series
virtual QRectF	dataRect () const =0
virtual size_t	dataSize () const =0

详细描述

条形图项的抽象基类

成员枚举类型说明

LayoutPolicy

enum QwtPlotAbstractBarChart::LayoutPolicy

Mode how to calculate the bar width

setLayoutPolicy(), setLayoutHint(), barWidthHint()

枚举值
AutoAdjustSamples	The sample width is calculated by dividing the bounding rectangle by the number of samples. The layoutHint() is used as a minimum width in paint device coordinates. 参见 boundingRectangle()
ScaleSamplesToAxes	layoutHint() defines an interval in axis coordinates
ScaleSampleToCanvas	The bar width is calculated by multiplying layoutHint() with the height or width of the canvas. 参见 boundingRectangle()
FixedSampleSize	layoutHint() defines a fixed width in paint device coordinates.

构造及析构函数说明

QwtPlotAbstractBarChart()

QwtPlotAbstractBarChart::QwtPlotAbstractBarChart ( const QwtText &  title )

explicit

构造函数

~QwtPlotAbstractBarChart()

QwtPlotAbstractBarChart::~QwtPlotAbstractBarChart ( )

virtual

析构函数

成员函数说明

baseline()

double QwtPlotAbstractBarChart::baseline

(

)

const

获取基线值

getCanvasMarginHint()

void QwtPlotAbstractBarChart::getCanvasMarginHint ( const QwtScaleMap &  xMap, const QwtScaleMap &  yMap, const QRectF &  canvasRect, double &  left, double &  top, double &  right, double &  bottom  ) const

overridevirtual

计算画布边距的提示

重载 QwtPlotItem .

layoutHint()

double QwtPlotAbstractBarChart::layoutHint

(

)

const

获取布局提示

layoutPolicy()

QwtPlotAbstractBarChart::LayoutPolicy QwtPlotAbstractBarChart::layoutPolicy

(

)

const

获取布局策略

margin()

int QwtPlotAbstractBarChart::margin

(

)

const

获取条形周围的边距

sampleWidth()

double QwtPlotAbstractBarChart::sampleWidth ( const QwtScaleMap &  map, double  canvasSize, double  boundingSize, double  value  ) const

protected

Calculate the width for a sample in paint device coordinates

参数

map	Scale map for the corresponding scale
canvasSize	Size of the canvas in paint device coordinates
boundingSize	Bounding size of the chart in plot coordinates ( used in AutoAdjustSamples mode )
value	Value of the sample

返回

Sample width

参见

layoutPolicy(), layoutHint()

setBaseline()

void QwtPlotAbstractBarChart::setBaseline

(

double

value

)

设置基线值

setLayoutHint()

void QwtPlotAbstractBarChart::setLayoutHint

(

double

hint

)

设置布局提示

setLayoutPolicy()

void QwtPlotAbstractBarChart::setLayoutPolicy

(

LayoutPolicy

policy

)

设置布局策略

setMargin()

void QwtPlotAbstractBarChart::setMargin

(

int

margin

)

设置条形周围的边距

setSpacing()

void QwtPlotAbstractBarChart::setSpacing

(

int

spacing

)

设置条形之间的间距

spacing()

int QwtPlotAbstractBarChart::spacing

(

)

const

获取条形之间的间距

---

该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_plot_abstract_barchart.h
• /home/runner/work/QWT/QWT/src/plot/qwt_plot_abstract_barchart.cpp