内容

• 特性
• 公共函数
• 公共槽
• 信号
• 保护函数
• 详细描述

QPaintedTextureImage Class

( Qt3DRender::QPaintedTextureImage )

A QAbstractTextureImage that can be written through a QPainter . 更多...

头：	#include <QPaintedTextureImage>
qmake:	QT += 3drender
Since:	Qt 5.8
继承：	Qt3DRender::QAbstractTextureImage

• 所有成员列表，包括继承成员

特性

• height : int
• size : QSize
• width : int

• 3 特性继承自 Qt3DRender::QAbstractTextureImage
• 3 特性继承自 Qt3DCore::QNode
• 1 特性继承自 QObject

公共函数

	QPaintedTextureImage (Qt3DCore::QNode * parent = nullptr)
	~QPaintedTextureImage ()
int	height () const
QSize	size () const
void	update (const QRect & rect = QRect())
int	width () const

• 3 公共函数继承自 Qt3DRender::QAbstractTextureImage
• 11 public functions inherited from Qt3DCore::QNode
• 32 公共函数继承自 QObject

公共槽

void	setHeight (int h )
void	setSize (QSize size )
void	setWidth (int w )

• 3 公共槽继承自 Qt3DRender::QAbstractTextureImage
• 3 公共槽继承自 Qt3DCore::QNode
• 1 公共槽继承自 QObject

信号

void	heightChanged (int w )
void	sizeChanged (QSize size )
void	widthChanged (int w )

• 3 信号继承自 Qt3DRender::QAbstractTextureImage
• 4 信号继承自 Qt3DCore::QNode
• 2 信号继承自 QObject

保护函数

virtual void

paint (QPainter * painter ) = 0

• 2 protected functions inherited from Qt3DRender::QAbstractTextureImage
• 2 protected functions inherited from Qt3DCore::QNode
• 9 保护函数继承自 QObject

额外继承成员

• 11 静态公共成员继承自 QObject

详细描述

A QAbstractTextureImage that can be written through a QPainter .

A QPaintedTextureImage provides a way to specify a texture image (and thus an OpenGL texture) through a QPainter . The width and height of the texture image can be specified through the width and height or size properties.

A QPaintedTextureImage must be subclassed and the virtual paint () function implemented. Each time update () is called on the QPaintedTextureImage ， paint () function is invoked and the resulting image is uploaded.

QPaintedTextureImage must be attached to some QAbstractTexture .

特性文档编制

height : int

This property holds the height of the texture image. The height must be greater than or equal to 1.

访问函数：

int	height () const
void	setHeight (int h )

通知程序信号：

void	heightChanged (int w )

size : QSize

This property holds the size of the texture image.

访问函数：

QSize	size () const
void	setSize (QSize size )

通知程序信号：

void	sizeChanged (QSize size )

另请参阅 height and width .

width : int

This property holds the width of the texture image. The width must be greater than or equal to 1.

访问函数：

int	width () const
void	setWidth (int w )

通知程序信号：

void	widthChanged (int w )

成员函数文档编制

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

Default constructs an instance of QPaintedTextureImage.

QPaintedTextureImage:: ~QPaintedTextureImage ()

Destroys the instance of QPaintedTextureImage.

[pure virtual protected] void QPaintedTextureImage:: paint ( QPainter * painter )

Paints the texture image with the specified QPainter object painter .

[slot] void QPaintedTextureImage:: setHeight ( int h )

Sets the height ( h ) of the texture image. Triggers an update, if the size changes.

注意： Setter 函数对于特性 height .

另请参阅 height ().

[slot] void QPaintedTextureImage:: setSize ( QSize size )

Sets the width and height of the texture image. Triggers an update, if the size 改变。

注意： Setter 函数对于特性 size .

另请参阅 size ().

[slot] void QPaintedTextureImage:: setWidth ( int w )

Sets the width ( w ) of the texture image. Triggers an update, if the size changes.

注意： Setter 函数对于特性 width .

另请参阅 width ().

void QPaintedTextureImage:: update (const QRect & rect = QRect())

Schedules the painted texture's paint () function to be called, which in turn uploads the new image to the GPU. Parameter rect is currently unused.