The QSGClipNode class implements the clipping functionality in the scene graph. More...

#include <qsgnode.h>

Inheritance diagram for QSGClipNode:

Collaboration diagram for QSGClipNode:

Public Member Functions
	QSGClipNode ()
	Creates a new QSGClipNode without a geometry.

	~QSGClipNode () override
	Deletes this QSGClipNode.

void	setIsRectangular (bool rectHint)
	Sets whether this clip node has a rectangular clip to rectHint.

bool	isRectangular () const
	Returns if this clip node has a rectangular clip.

void	setClipRect (const QRectF &)
	Sets the clip rect of this clip node to rect.

QRectF	clipRect () const
	Returns the clip rect of this node.

Public Member Functions inherited from QSGBasicGeometryNode
	~QSGBasicGeometryNode () override
	Deletes this QSGBasicGeometryNode.

void	setGeometry (QSGGeometry *geometry)
	Sets the geometry of this node to geometry.

const QSGGeometry *	geometry () const
	Returns this node's geometry.

QSGGeometry *	geometry ()
	Returns this node's geometry.

const QMatrix4x4 *	matrix () const
	Will be set during rendering to contain transformation of the geometry for that rendering pass.

const QSGClipNode *	clipList () const
	Will be set during rendering to contain the clip of the geometry for that rendering pass.

void	setRendererMatrix (const QMatrix4x4 *m)

void	setRendererClipList (const QSGClipNode *c)

Public Member Functions inherited from QSGNode
	QSGNode ()
	Constructs a new node.

virtual	~QSGNode ()
	Destroys the node.

QSGNode *	parent () const
	Returns the parent node of this node.

void	removeChildNode (QSGNode *node)
	Removes node from this node's list of children.

void	removeAllChildNodes ()
	Removes all child nodes from this node's list of children.

void	prependChildNode (QSGNode *node)
	Prepends node to this node's the list of children.

void	appendChildNode (QSGNode *node)
	Appends node to this node's list of children.

void	insertChildNodeBefore (QSGNode node, QSGNode before)
	Inserts node to this node's list of children before the node specified with before.

void	insertChildNodeAfter (QSGNode node, QSGNode after)
	Inserts node to this node's list of children after the node specified with after.

void	reparentChildNodesTo (QSGNode *newParent)

int	childCount () const
	Returns the number of child nodes.

QSGNode *	childAtIndex (int i) const
	Returns the child at index i.

QSGNode *	firstChild () const
	Returns the first child of this node.

QSGNode *	lastChild () const
	Returns the last child of this node.

QSGNode *	nextSibling () const
	Returns the node after this in the parent's list of children.

QSGNode *	previousSibling () const
	Returns the node before this in the parent's list of children.

NodeType	type () const
	Returns the type of this node.

QT_DEPRECATED void	clearDirty ()

void	markDirty (DirtyState bits)
	Notifies all connected renderers that the node has dirty bits.

QT_DEPRECATED DirtyState	dirtyState () const

virtual bool	isSubtreeBlocked () const
	Returns whether this node and its subtree is available for use.

Flags	flags () const
	Returns the set of flags for this node.

void	setFlag (Flag, bool=true)
	Sets the flag f on this node if enabled is true; otherwise clears the flag.

void	setFlags (Flags, bool=true)
	Sets the flags f on this node if enabled is true; otherwise clears the flags.

virtual void	preprocess ()
	Override this function to do processing on the node before it is rendered.

Additional Inherited Members
Public Types inherited from QSGNode
enum	NodeType { BasicNodeType , GeometryNodeType , TransformNodeType , ClipNodeType , OpacityNodeType , RootNodeType , RenderNodeType }
	Can be used to figure out the type of node. More...

enum	Flag { OwnedByParent = 0x0001 , UsePreprocess = 0x0002 , OwnsGeometry = 0x00010000 , OwnsMaterial = 0x00020000 , OwnsOpaqueMaterial = 0x00040000 , IsVisitableNode = 0x01000000 }
	The QSGNode::Flag enum describes flags on the QSGNode. More...

enum	DirtyStateBit { DirtySubtreeBlocked = 0x0080 , DirtyMatrix = 0x0100 , DirtyNodeAdded = 0x0400 , DirtyNodeRemoved = 0x0800 , DirtyGeometry = 0x1000 , DirtyMaterial = 0x2000 , DirtyOpacity = 0x4000 , DirtyForceUpdate = 0x8000 , DirtyUsePreprocess = UsePreprocess , DirtyPropagationMask }
	Used in QSGNode::markDirty() to indicate how the scene graph has changed. More...

Protected Member Functions inherited from QSGBasicGeometryNode
	QSGBasicGeometryNode (NodeType type)
	Creates a new basic geometry node of type type.

	QSGBasicGeometryNode (QSGBasicGeometryNodePrivate &dd, NodeType type)

Protected Member Functions inherited from QSGNode
	QSGNode (NodeType type)
	Constructs a new node with the given node type.

	QSGNode (QSGNodePrivate &dd, NodeType type)
	Constructs a new node with the given node type.

Protected Attributes inherited from QSGNode
QScopedPointer< QSGNodePrivate >	d_ptr

Detailed Description

The QSGClipNode class implements the clipping functionality in the scene graph.

\inmodule QtQuick

Clipping applies to the node's subtree and can be nested. Multiple clip nodes will be accumulated by intersecting all their geometries. The accumulation happens as part of the rendering.

Clip nodes must have a geometry before they can be added to the scene graph.

Clipping is usually implemented by using the stencil buffer.

Note: All classes with QSG prefix should be used solely on the scene graph's rendering thread. See \l {Scene Graph and Rendering} for more information.

Definition at line 220 of file qsgnode.h.

Constructor & Destructor Documentation

◆ QSGClipNode()

QSGClipNode::QSGClipNode ( )

Creates a new QSGClipNode without a geometry.

The clip node must have a geometry before it can be added to the scene graph.

Definition at line 1039 of file qsgnode.cpp.

References Q_UNUSED.

◆ ~QSGClipNode()

QSGClipNode::~QSGClipNode ( )

override

Deletes this QSGClipNode.

If the flag QSGNode::OwnsGeometry is set, the geometry will also be deleted.

Definition at line 1055 of file qsgnode.cpp.

Member Function Documentation

◆ clipRect()

QRectF QSGClipNode::clipRect ( ) const

inline

Returns the clip rect of this node.

Definition at line 230 of file qsgnode.h.

Referenced by QSGOpenVGNodeVisitor::visit(), and QSGSoftwareRenderableNodeUpdater::visit().

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◆ isRectangular()

bool QSGClipNode::isRectangular ( ) const

inline

Returns if this clip node has a rectangular clip.

Definition at line 227 of file qsgnode.h.

◆ setClipRect()

void QSGClipNode::setClipRect ( const QRectF & rect )

Sets the clip rect of this clip node to rect.

When a rectangular clip is set in combination with setIsRectangular the renderer may in some cases use a more optimal clip method.

Definition at line 1101 of file qsgnode.cpp.

References rect.

Referenced by QGeoTiledMapRootNode::setClipRect(), QQuickWindowPrivate::updateDirtyNode(), and QQuickTextArea::updatePaintNode().

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◆ setIsRectangular()

void QSGClipNode::setIsRectangular ( bool rectHint )

Sets whether this clip node has a rectangular clip to rectHint.

This is an optimization hint which means that the renderer can use scissoring instead of stencil, which is significantly faster.

When this hint is set and it is applicable, the clip region will be generated from clipRect() rather than geometry().

By default this property is false.

Definition at line 1081 of file qsgnode.cpp.

Referenced by QQuickDefaultClipNode::QQuickDefaultClipNode(), and QQuickDefaultClipNode::setRadius().

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The documentation for this class was generated from the following files:

qtdeclarative/src/quick/scenegraph/coreapi/qsgnode.h (5cdd7fa66203808e3adcf48386fa0aea0d525889)
qtdeclarative/src/quick/scenegraph/coreapi/qsgnode.cpp (0ba9ff8b0552fe0928770b5b4cd5f43d3aa3445c)

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QSGClipNode()

◆ ~QSGClipNode()

Member Function Documentation

◆ clipRect()

◆ isRectangular()

◆ setClipRect()

◆ setIsRectangular()