Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas 更多...

#include <qwt_plot_abstract_canvas.h>

类 QwtPlotAbstractGLCanvas 继承关系图:

类
class	PrivateData

Public 类型
enum	PaintAttribute { BackingStore = 1 , ImmediatePaint = 8 }
	Paint attributes 更多...

Public 类型继承自 QwtPlotAbstractCanvas
enum	FocusIndicator { NoFocusIndicator , CanvasFocusIndicator , ItemFocusIndicator }
	Focus indicator 更多...

Public 成员函数
	QwtPlotAbstractGLCanvas (QWidget *canvasWidget)
	Paint attributes

void	setPaintAttribute (PaintAttribute, bool on=true)
	Changing the paint attributes

bool	testPaintAttribute (PaintAttribute) const
	Test whether a paint attribute is enabled

void	setFrameStyle (int style)
	Set the frame style

int	frameStyle () const
	Get the frame style

void	setFrameShadow (QFrame::Shadow)
	Set the frame shadow

QFrame::Shadow	frameShadow () const
	Get the frame shadow

void	setFrameShape (QFrame::Shape)
	Set the frame shape

QFrame::Shape	frameShape () const
	Get the frame shape

void	setLineWidth (int)
	Set the frame line width

int	lineWidth () const
	Get the line width of the frame

void	setMidLineWidth (int)
	Set the frame mid line width

int	midLineWidth () const
	Get the midline width of the frame

int	frameWidth () const
	Get the frame width depending on the style, line width and midline width

QRect	frameRect () const
	Get the rectangle where the frame is drawn in

virtual void	invalidateBackingStore ()=0
	Invalidate the internal backing store

Public 成员函数继承自 QwtPlotAbstractCanvas
	QwtPlotAbstractCanvas (QWidget *canvasWidget)
	Constructor

QwtPlot *	plot ()
	Return parent plot widget

const QwtPlot *	plot () const
	Return parent plot widget

void	setFocusIndicator (FocusIndicator)
	Set the focus indicator

FocusIndicator	focusIndicator () const
	Get the focus indicator

void	setBorderRadius (double)
	Set the radius for the corners of the border frame

double	borderRadius () const
	Get the radius for the corners of the border frame

Protected 成员函数
void	replot ()
	Invalidate the paint cache and repaint the canvas

void	draw (QPainter *)
	Helper function for the derived plot canvas

Protected 成员函数继承自 QwtPlotAbstractCanvas
QWidget *	canvasWidget ()

const QWidget *	canvasWidget () const

virtual void	drawFocusIndicator (QPainter *)
	Draw the focus indication

virtual void	drawBorder (QPainter *)
	Draw the border of the canvas

virtual void	drawBackground (QPainter *)
	Helper function for the derived plot canvas

void	fillBackground (QPainter *)
	Helper function for the derived plot canvas

void	drawCanvas (QPainter *)
	Draw the plot to the canvas

void	drawStyled (QPainter *, bool)
	Helper function for the derived plot canvas

void	drawUnstyled (QPainter *)
	Helper function for the derived plot canvas

QPainterPath	canvasBorderPath (const QRect &rect) const

void	updateStyleSheetInfo ()
	Update the cached information about the current style sheet

详细描述

Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas

成员枚举类型说明

◆ PaintAttribute

enum QwtPlotAbstractGLCanvas::PaintAttribute

Paint attributes

The default setting enables BackingStore and Opaque.

参见: setPaintAttribute(), testPaintAttribute()

枚举值

BackingStore

Paint double buffered reusing the content of the pixmap buffer when possible

Using a backing store might improve the performance significantly, when working with widget overlays (like rubber bands). Disabling the cache might improve the performance for incremental paints (using QwtPlotDirectPainter).

参见: backingStore(), invalidateBackingStore()

ImmediatePaint

When ImmediatePaint is set replot() calls repaint() instead of update()

参见: replot(), QWidget::repaint(), QWidget::update()

构造及析构函数说明

◆ QwtPlotAbstractGLCanvas()

QwtPlotAbstractGLCanvas::QwtPlotAbstractGLCanvas ( QWidget * canvasWidget )

explicit

Paint attributes

Constructor

参数

[in] canvasWidget plot canvas widget

Destructor

成员函数说明

◆ frameRect()

QRect QwtPlotAbstractGLCanvas::frameRect ( ) const

Get the rectangle where the frame is drawn in

返回: The rectangle where the frame is drawn in

◆ frameShadow()

QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow ( ) const

Get the frame shadow

返回: Frame shadow

参见: setFrameShadow(), QFrame::setFrameShadow()

◆ frameShape()

QFrame::Shape QwtPlotAbstractGLCanvas::frameShape ( ) const

Get the frame shape

返回: Frame shape

参见: setFrameShape(), QFrame::frameShape()

◆ frameStyle()

int QwtPlotAbstractGLCanvas::frameStyle ( ) const

Get the frame style

返回: The bitwise OR between a frameShape() and a frameShadow()

参见: setFrameStyle(), QFrame::frameStyle()

◆ frameWidth()

int QwtPlotAbstractGLCanvas::frameWidth ( ) const

Get the frame width depending on the style, line width and midline width

返回: Frame width depending on the style, line width and midline width

◆ invalidateBackingStore()

virtual void QwtPlotAbstractGLCanvas::invalidateBackingStore ( )

pure virtual

Invalidate the internal backing store

在 QwtPlotGLCanvas , 以及 QwtPlotOpenGLCanvas 内被实现.

◆ lineWidth()

int QwtPlotAbstractGLCanvas::lineWidth ( ) const

Get the line width of the frame

返回: Line width of the frame

参见: setLineWidth(), midLineWidth()

◆ midLineWidth()

int QwtPlotAbstractGLCanvas::midLineWidth ( ) const

Get the midline width of the frame

返回: Midline width of the frame

参见: setMidLineWidth(), lineWidth()

◆ replot()

void QwtPlotAbstractGLCanvas::replot ( )

protected

Invalidate the paint cache and repaint the canvas

参见: invalidatePaintCache()

◆ setFrameShadow()

void QwtPlotAbstractGLCanvas::setFrameShadow ( QFrame::Shadow shadow )

Set the frame shadow

参数

[in] shadow Frame shadow

参见: frameShadow(), setFrameShape(), QFrame::setFrameShadow()

◆ setFrameShape()

void QwtPlotAbstractGLCanvas::setFrameShape ( QFrame::Shape shape )

Set the frame shape

参数

[in] shape Frame shape

参见: frameShape(), setFrameShadow(), QFrame::frameShape()

◆ setFrameStyle()

void QwtPlotAbstractGLCanvas::setFrameStyle ( int style )

Set the frame style

参数

[in] style The bitwise OR between a shape and a shadow

参见: frameStyle(), QFrame::setFrameStyle(), setFrameShadow(), setFrameShape()

◆ setLineWidth()

void QwtPlotAbstractGLCanvas::setLineWidth ( int width )

Set the frame line width

The default line width is 2 pixels.

参数

[in] width Line width of the frame

参见: lineWidth(), setMidLineWidth()

◆ setMidLineWidth()

void QwtPlotAbstractGLCanvas::setMidLineWidth ( int width )

Set the frame mid line width

The default midline width is 0 pixels.

参数

[in] width Midline width of the frame

参见: midLineWidth(), setLineWidth()

◆ setPaintAttribute()

void QwtPlotAbstractGLCanvas::setPaintAttribute	(	PaintAttribute	attribute,
		bool	on = `true`
	)

Changing the paint attributes

参数

[in]	attribute	Paint attribute
[in]	on	On/Off

参见: testPaintAttribute()

◆ testPaintAttribute()

bool QwtPlotAbstractGLCanvas::testPaintAttribute ( PaintAttribute attribute ) const

Test whether a paint attribute is enabled

参数

[in] attribute Paint attribute

返回: true, when attribute is enabled

参见: setPaintAttribute()

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_plot_abstract_canvas.h
/home/runner/work/QWT/QWT/src/plot/qwt_plot_abstract_canvas.cpp

类

Public 类型

Public 成员函数

Protected 成员函数

详细描述

成员枚举类型说明

◆ PaintAttribute

构造及析构函数说明

◆ QwtPlotAbstractGLCanvas()

成员函数说明

◆ frameRect()

◆ frameShadow()

◆ frameShape()

◆ frameStyle()

◆ frameWidth()

◆ invalidateBackingStore()

◆ lineWidth()

◆ midLineWidth()

◆ replot()

◆ setFrameShadow()

◆ setFrameShape()

◆ setFrameStyle()

◆ setLineWidth()

◆ setMidLineWidth()

◆ setPaintAttribute()

◆ testPaintAttribute()