内容

• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QRenderSurfaceSelector Class

class Qt3DRender ::QRenderSurfaceSelector

Provides a way of specifying the render surface. 更多...

头：	#include <QRenderSurfaceSelector>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	RenderSurfaceSelector
继承：	Qt3DRender::QFrameGraphNode

该类在 Qt 5.7 引入。

• 所有成员列表，包括继承成员

特性

• externalRenderTargetSize : QSize
• surface : QObject*
• surfacePixelRatio : float

公共函数

	QRenderSurfaceSelector (Qt3DCore::QNode * parent = nullptr)
QSize	externalRenderTargetSize () const
QObject *	surface () const
float	surfacePixelRatio () const

公共槽

void	setExternalRenderTargetSize (const QSize & size )
void	setSurface (QObject * surfaceObject )
void	setSurfacePixelRatio (float ratio )

信号

void	externalRenderTargetSizeChanged (const QSize & size )
void	surfaceChanged (QObject * surface )
void	surfacePixelRatioChanged (float ratio )

详细描述

Qt3DRender::QRenderSurfaceSelector can be used to select the surface, where Qt3D renders the content. The surface can either be window surface or offscreen surface. The externalRenderTargetSize is used to specify the actual size of the surface when offscreen surface is used.

When DPI scaling is used by the system, the logical surface size, which is used by mouse events, and the actual 'physical' size of the surface can differ. The surfacePixelRatio is the factor to convert the logical size to the physical size.

另请参阅 QWindow , QOffscreenSurface ，和 QSurface .

特性文档编制

externalRenderTargetSize : QSize

Holds the size of the external render target.

访问函数：

QSize	externalRenderTargetSize () const
void	setExternalRenderTargetSize (const QSize & size )

通知程序信号：

void	externalRenderTargetSizeChanged (const QSize & size )

surface : QObject *

Holds the surface

访问函数：

QObject *	surface () const
void	setSurface (QObject * surfaceObject )

通知程序信号：

void	surfaceChanged (QObject * surface )

surfacePixelRatio : float

Holds the surfacePixelRatio of the surface.

访问函数：

float	surfacePixelRatio () const
void	setSurfacePixelRatio (float ratio )

通知程序信号：

void	surfacePixelRatioChanged (float ratio )

成员函数文档编制

QRenderSurfaceSelector:: QRenderSurfaceSelector ( Qt3DCore::QNode * parent = nullptr)

Constructs QRenderSurfaceSelector with given parent .

[slot] void QRenderSurfaceSelector:: setExternalRenderTargetSize (const QSize & size )

Sets render target size if different than underlying surface size. Tells picking the correct size.

注意： Setter 函数对于特性 externalRenderTargetSize .

另请参阅 externalRenderTargetSize ().

[slot] void QRenderSurfaceSelector:: setSurface ( QObject * surfaceObject )

设置 surfaceObject .

注意： Setter 函数对于特性 surface .

另请参阅 surface ().