QwtPlotLayoutEngine::Dimensions结构体 参考

Structure holding dimension values for layout calculation 更多...

#include <qwt_plot_layout_engine.h>

Public 成员函数
	Dimensions ()
	Constructor for Dimensions structure
int	dimAxis (QwtAxisId axisId) const
	Get the stored dimension for a given axis
void	setDimAxis (QwtAxisId axisId, int dim)
	Set the stored dimension for a given axis
int	dimAxes (int axisPos) const
	Read dimension by axis position index
int	dimYAxes () const
	Sum width of left and right Y axes
int	dimXAxes () const
	Sum height of top and bottom X axes
QRectF	centered (const QRectF &rect, const QRectF &labelRect) const
	Center a label rectangle within available space
QRectF	innerRect (const QRectF &rect) const
	Calculate inner rectangle after accounting for axis dimensions

Public 属性
int	dimTitle
int	dimFooter

详细描述

Structure holding dimension values for layout calculation

Contains width/height values for title, footer, and all four axes.

构造及析构函数说明

Dimensions()

QwtPlotLayoutEngine::Dimensions::Dimensions

(

)

Constructor for Dimensions structure

Initializes all dimension values to zero for title, footer, and all axis positions.

成员函数说明

centered()

QRectF QwtPlotLayoutEngine::Dimensions::centered	(	const QRectF &	rect,
		const QRectF &	labelRect
	)		const

Center a label rectangle within available space

Adjusts the label rectangle to be centered horizontally within the available space after accounting for Y axis dimensions.

参数

rect	The available rectangle
labelRect	The label rectangle to center

返回

Centered label rectangle

dimAxes()

int QwtPlotLayoutEngine::Dimensions::dimAxes

(

int

axisPos

)

const

Read dimension by axis position index

参数

axisPos

Axis position enum value (YLeft, YRight, XTop, XBottom)

返回

Pixel size of the axis at the given position

dimAxis()

int QwtPlotLayoutEngine::Dimensions::dimAxis

(

QwtAxisId

axisId

)

const

Get the stored dimension for a given axis

参数

axisId

Axis identifier (QwtAxis::XTop, XBottom, YLeft, YRight)

返回

The reserved pixels for this axis

dimXAxes()

int QwtPlotLayoutEngine::Dimensions::dimXAxes

(

)

const

Sum height of top and bottom X axes

返回

Combined height in pixels

dimYAxes()

int QwtPlotLayoutEngine::Dimensions::dimYAxes

(

)

const

Sum width of left and right Y axes

返回

Combined width in pixels

innerRect()

QRectF QwtPlotLayoutEngine::Dimensions::innerRect

(

const QRectF &

rect

)

const

Calculate inner rectangle after accounting for axis dimensions

Calculates the available space for the canvas after reserving space for all axes.

参数

rect	The outer rectangle

返回

Inner rectangle for canvas

setDimAxis()

void QwtPlotLayoutEngine::Dimensions::setDimAxis	(	QwtAxisId	axisId,
		int	dim
	)

Set the stored dimension for a given axis

参数

axisId	Axis identifier
dim	New dimension in pixels

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该结构体的文档由以下文件生成:

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