The ShaderEffectSource object encapsulates the source content for the ShaderEffectItem. More...

#include <shadereffectsource.h>

Inheritance diagram for ShaderEffectSource:

Public Types
enum	Format { Alpha = GL_ALPHA, RGB = GL_RGB, RGBA = GL_RGBA }

enum	WrapMode { ClampToEdge, RepeatHorizontally, RepeatVertically, Repeat }

Public Types inherited from QDeclarativeItem
enum	TransformOrigin { TopLeft, Top, TopRight, Left, Center, Right, BottomLeft, Bottom, BottomRight }
	Controls the point about which simple transforms like scale apply. More...

Public Types inherited from QGraphicsItem
enum	{ Type = 1, UserType = 65536 }

enum	CacheMode { NoCache, ItemCoordinateCache, DeviceCoordinateCache }
	This enum describes QGraphicsItem's cache modes. More...

enum	GraphicsItemChange { ItemPositionChange, ItemMatrixChange, ItemVisibleChange, ItemEnabledChange, ItemSelectedChange, ItemParentChange, ItemChildAddedChange, ItemChildRemovedChange, ItemTransformChange, ItemPositionHasChanged, ItemTransformHasChanged, ItemSceneChange, ItemVisibleHasChanged, ItemEnabledHasChanged, ItemSelectedHasChanged, ItemParentHasChanged, ItemSceneHasChanged, ItemCursorChange, ItemCursorHasChanged, ItemToolTipChange, ItemToolTipHasChanged, ItemFlagsChange, ItemFlagsHaveChanged, ItemZValueChange, ItemZValueHasChanged, ItemOpacityChange, ItemOpacityHasChanged, ItemScenePositionHasChanged, ItemRotationChange, ItemRotationHasChanged, ItemScaleChange, ItemScaleHasChanged, ItemTransformOriginPointChange, ItemTransformOriginPointHasChanged }
	This enum describes the state changes that are notified by QGraphicsItem::itemChange(). More...

enum	GraphicsItemFlag { ItemIsMovable = 0x1, ItemIsSelectable = 0x2, ItemIsFocusable = 0x4, ItemClipsToShape = 0x8, ItemClipsChildrenToShape = 0x10, ItemIgnoresTransformations = 0x20, ItemIgnoresParentOpacity = 0x40, ItemDoesntPropagateOpacityToChildren = 0x80, ItemStacksBehindParent = 0x100, ItemUsesExtendedStyleOption = 0x200, ItemHasNoContents = 0x400, ItemSendsGeometryChanges = 0x800, ItemAcceptsInputMethod = 0x1000, ItemNegativeZStacksBehindParent = 0x2000, ItemIsPanel = 0x4000, ItemIsFocusScope = 0x8000, ItemSendsScenePositionChanges = 0x10000, ItemStopsClickFocusPropagation = 0x20000, ItemStopsFocusHandling = 0x40000 }
	This enum describes different flags that you can set on an item to toggle different features in the item's behavior. More...

enum	PanelModality { NonModal, PanelModal, SceneModal }
	This enum specifies the behavior of a modal panel. More...

Public Slots
void	markSceneGraphDirty ()

void	markSourceItemDirty ()

void	markSourceSizeDirty ()

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals
void	activeChanged ()

void	formatChanged ()

void	hideSourceChanged ()

void	liveChanged ()

void	repaintRequired ()

void	sourceItemChanged ()

void	sourceRectChanged ()

void	textureSizeChanged ()

void	wrapModeChanged ()

Signals inherited from QDeclarativeItem
void	activeFocusChanged (bool)

void	baselineOffsetChanged (qreal)

void	childrenRectChanged (const QRectF &)

void	clipChanged (bool)

void	focusChanged (bool)

void	implicitHeightChanged ()

void	implicitWidthChanged ()

void	parentChanged (QDeclarativeItem *)

void	smoothChanged (bool)

void	stateChanged (const QString &)

void	transformOriginChanged (TransformOrigin)

Signals inherited from QGraphicsObject
void	childrenChanged ()
	This signal gets emitted whenever the children list changes. More...

void	enabledChanged ()
	This signal gets emitted whenever the item get's enabled or disabled. More...

void	heightChanged ()

void	opacityChanged ()
	This signal gets emitted whenever the opacity of the item changes. More...

void	parentChanged ()
	This signal gets emitted whenever the parent of the item changes. More...

void	rotationChanged ()
	This signal gets emitted whenever the roation of the item changes. More...

void	scaleChanged ()
	This signal is emitted when the scale of the item changes. More...

void	visibleChanged ()
	This signal gets emitted whenever the visibility of the item changes. More...

void	widthChanged ()

void	xChanged ()
	This signal gets emitted whenever the x position of the item changes. More...

void	yChanged ()
	This signal gets emitted whenever the y position of the item changes. More...

void	zChanged ()
	This signal gets emitted whenever the z value of the item changes. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Public Functions
void	bind ()

void	derefFromEffectItem ()

ShaderEffectBuffer *	fbo ()

Q_INVOKABLE void	grab ()
	Repaints the source item content into the texture. More...

bool	hideSource () const

bool	isActive () const

bool	isDirtyTexture ()

bool	isLive () const

bool	isMirrored ()

void	refFromEffectItem ()

void	setHideSource (bool hide)

void	setLive (bool s)

void	setSourceItem (QDeclarativeItem *item)

void	setSourceRect (const QRectF &rect)

void	setTextureSize (const QSize &size)

void	setWrapMode (WrapMode mode)

	ShaderEffectSource (QDeclarativeItem *parent=0)

QDeclarativeItem *	sourceItem () const

QRectF	sourceRect () const

QSize	textureSize () const

void	updateBackbuffer ()

WrapMode	wrapMode () const

virtual	~ShaderEffectSource ()

Public Functions inherited from QDeclarativeItem
qreal	baselineOffset () const

QRectF	boundingRect () const

Q_INVOKABLE QDeclarativeItem *	childAt (qreal x, qreal y) const
	Returns the visible child item at point (x, y), which is in this item's coordinate system, or 0 if there is no such item. More...

QRectF	childrenRect ()

bool	clip () const

Q_INVOKABLE void	forceActiveFocus ()
	Forces active focus on the item. More...

bool	hasActiveFocus () const

bool	hasFocus () const

qreal	height () const

qreal	implicitHeight () const

qreal	implicitWidth () const

bool	keepMouseGrab () const
	Returns a value indicating whether mouse input should remain with this item exclusively. More...

Q_INVOKABLE QScriptValue	mapFromItem (const QScriptValue &item, qreal x, qreal y) const
	Maps the point (x, y), which is in item's coordinate system, to this item's coordinate system, and returns a script value with `x` and `y` properties matching the mapped cooordinate. More...

Q_INVOKABLE QScriptValue	mapToItem (const QScriptValue &item, qreal x, qreal y) const
	Maps the point (x, y), which is in this item's coordinate system, to item's coordinate system, and returns a script value with `x` and `y` properties matching the mapped cooordinate. More...

virtual void	paint (QPainter , const QStyleOptionGraphicsItem , QWidget *)

QDeclarativeItem *	parentItem () const
	Returns the QDeclarativeItem parent of this item. More...

	QDeclarativeItem (QDeclarativeItem *parent=0)
	Constructs a QDeclarativeItem with the given parent. More...

void	resetHeight ()

void	resetWidth ()

void	setBaselineOffset (qreal)

void	setClip (bool)

void	setFocus (bool)

void	setHeight (qreal)

void	setKeepMouseGrab (bool)
	The flag indicating whether the mouse should remain with this item is set to keep. More...

void	setParentItem (QDeclarativeItem *parent)

void	setSize (const QSizeF &size)

void	setSmooth (bool)
	Sets whether the item should be drawn with antialiasing and smooth pixmap filtering to smooth. More...

void	setTransformOrigin (TransformOrigin)
	Set the transform origin. More...

void	setWidth (qreal)

bool	smooth () const

QDeclarativeListProperty< QGraphicsTransform >	transform ()

TransformOrigin	transformOrigin () const

qreal	width () const

virtual	~QDeclarativeItem ()
	Destroys the QDeclarativeItem. More...

Public Functions inherited from QGraphicsObject
void	grabGesture (Qt::GestureType type, Qt::GestureFlags flags=Qt::GestureFlags())
	Subscribes the graphics object to the given gesture with specific flags. More...

	QGraphicsObject (QGraphicsItem *parent=0)
	Constructs a QGraphicsObject with parent. More...

void	ungrabGesture (Qt::GestureType type)
	Unsubscribes the graphics object from the given gesture. More...

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Public Functions inherited from QGraphicsItem
bool	acceptDrops () const
	Returns true if this item can accept drag and drop events; otherwise, returns false. More...

Qt::MouseButtons	acceptedMouseButtons () const
	Returns the mouse buttons that this item accepts mouse events for. More...

bool	acceptHoverEvents () const
	Returns true if an item accepts hover events (QGraphicsSceneHoverEvent); otherwise, returns false. More...

bool	acceptsHoverEvents () const
	Call acceptHoverEvents() instead. More...

bool	acceptTouchEvents () const
	Returns true if an item accepts touch events; otherwise, returns false. More...

virtual void	advance (int phase)
	This virtual function is called twice for all items by the QGraphicsScene::advance() slot. More...

QRegion	boundingRegion (const QTransform &itemToDeviceTransform) const
	Returns the bounding region for this item. More...

qreal	boundingRegionGranularity () const
	Returns the item's bounding region granularity; a value between and including 0 and 1. More...

CacheMode	cacheMode () const
	Returns the cache mode for this item. More...

QList< QGraphicsItem * >	childItems () const
	Returns a list of this item's children. More...

QList< QGraphicsItem * >	children () const
	Use childItems() instead. More...

QRectF	childrenBoundingRect () const
	Returns the bounding rect of this item's descendants (i.e., its children, their children, etc.) in local coordinates. More...

void	clearFocus ()
	Takes keyboard input focus from the item. More...

QPainterPath	clipPath () const
	Returns this item's clip path, or an empty QPainterPath if this item is not clipped. More...

virtual bool	collidesWithItem (const QGraphicsItem *other, Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
	Returns true if this item collides with other; otherwise returns false. More...

virtual bool	collidesWithPath (const QPainterPath &path, Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
	Returns true if this item collides with path. More...

QList< QGraphicsItem * >	collidingItems (Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
	Returns a list of all items that collide with this item. More...

QGraphicsItem *	commonAncestorItem (const QGraphicsItem *other) const
	Returns the closest common ancestor item of this item and other, or 0 if either other is 0, or there is no common ancestor. More...

virtual bool	contains (const QPointF &point) const
	Returns true if this item contains point, which is in local coordinates; otherwise, false is returned. More...

QCursor	cursor () const
	Returns the current cursor shape for the item. More...

QVariant	data (int key) const
	Returns this item's custom data for the key key as a QVariant. More...

QTransform	deviceTransform (const QTransform &viewportTransform) const
	Returns this item's device transformation matrix, using viewportTransform to map from scene to device coordinates. More...

qreal	effectiveOpacity () const
	Returns this item's effective opacity, which is between 0. More...

void	ensureVisible (const QRectF &rect=QRectF(), int xmargin=50, int ymargin=50)
	If this item is part of a scene that is viewed by a QGraphicsView, this convenience function will attempt to scroll the view to ensure that rect is visible inside the view's viewport. More...

void	ensureVisible (qreal x, qreal y, qreal w, qreal h, int xmargin=50, int ymargin=50)
	This convenience function is equivalent to calling ensureVisible(QRectF(x, y, w, h), xmargin, ymargin): More...

bool	filtersChildEvents () const
	Returns true if this item filters child events (i. More...

GraphicsItemFlags	flags () const
	Returns this item's flags. More...

QGraphicsItem *	focusItem () const
	If this item, a child or descendant of this item currently has input focus, this function will return a pointer to that item. More...

QGraphicsItem *	focusProxy () const
	Returns this item's focus proxy, or 0 if this item has no focus proxy. More...

QGraphicsItem *	focusScopeItem () const
	Returns this item's focus scope item. More...

void	grabKeyboard ()
	Grabs the keyboard input. More...

void	grabMouse ()
	Grabs the mouse input. More...

QGraphicsEffect *	graphicsEffect () const
	Returns a pointer to this item's effect if it has one; otherwise 0. More...

QGraphicsItemGroup *	group () const
	Returns a pointer to this item's item group, or 0 if this item is not member of a group. More...

bool	handlesChildEvents () const
	Returns true if this item handles child events (i. More...

bool	hasCursor () const
	Returns true if this item has a cursor set; otherwise, false is returned. More...

bool	hasFocus () const
	Returns true if this item is active, and it or its focus proxy has keyboard input focus; otherwise, returns false. More...

void	hide ()
	Hides the item. More...

Qt::InputMethodHints	inputMethodHints () const
	Returns the current input method hints of this item. More...

void	installSceneEventFilter (QGraphicsItem *filterItem)
	Installs an event filter for this item on filterItem, causing all events for this item to first pass through filterItem's sceneEventFilter() function. More...

bool	isActive () const
	Returns true if this item is active; otherwise returns false. More...

bool	isAncestorOf (const QGraphicsItem *child) const
	Returns true if this item is an ancestor of child (i.e., if this item is child's parent, or one of child's parent's ancestors). More...

bool	isBlockedByModalPanel (QGraphicsItem **blockingPanel=0) const
	Returns true if this item is blocked by a modal panel, false otherwise. More...

bool	isClipped () const
	Returns true if this item is clipped. More...

bool	isEnabled () const
	Returns true if the item is enabled; otherwise, false is returned. More...

bool	isObscured () const
	Returns true if this item's bounding rect is completely obscured by the opaque shape of any of colliding items above it (i.e., with a higher Z value than this item). More...

bool	isObscured (const QRectF &rect) const
	Returns true if rect is completely obscured by the opaque shape of any of colliding items above it (i. More...

bool	isObscured (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling isObscured(QRectF(x, y, w, h)). More...

virtual bool	isObscuredBy (const QGraphicsItem *item) const
	Returns true if this item's bounding rect is completely obscured by the opaque shape of item. More...

bool	isPanel () const
	Returns true if the item is a panel; otherwise returns false. More...

bool	isSelected () const
	Returns true if this item is selected; otherwise, false is returned. More...

bool	isUnderMouse () const
	Returns true if this item is currently under the mouse cursor in one of the views; otherwise, false is returned. More...

bool	isVisible () const
	Returns true if the item is visible; otherwise, false is returned. More...

bool	isVisibleTo (const QGraphicsItem *parent) const
	Returns true if the item is visible to parent; otherwise, false is returned. More...

bool	isWidget () const
	Returns true if this item is a widget (i. More...

bool	isWindow () const
	Returns true if the item is a QGraphicsWidget window, otherwise returns false. More...

QTransform	itemTransform (const QGraphicsItem other, bool ok=0) const
	Returns a QTransform that maps coordinates from this item to other. More...

QPointF	mapFromItem (const QGraphicsItem *item, const QPointF &point) const
	Maps the point point, which is in item's coordinate system, to this item's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapFromItem (const QGraphicsItem *item, const QRectF &rect) const
	Maps the rectangle rect, which is in item's coordinate system, to this item's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapFromItem (const QGraphicsItem *item, const QPolygonF &polygon) const
	Maps the polygon polygon, which is in item's coordinate system, to this item's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapFromItem (const QGraphicsItem *item, const QPainterPath &path) const
	Maps the path path, which is in item's coordinate system, to this item's coordinate system, and returns the mapped path. More...

QPointF	mapFromItem (const QGraphicsItem *item, qreal x, qreal y) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This convenience function is equivalent to calling mapFromItem(item, QPointF(x, y)). More...

QPolygonF	mapFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const

QPointF	mapFromParent (const QPointF &point) const
	Maps the point point, which is in this item's parent's coordinate system, to this item's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapFromParent (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's parent's coordinate system, to this item's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapFromParent (const QPolygonF &polygon) const
	Maps the polygon polygon, which is in this item's parent's coordinate system, to this item's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapFromParent (const QPainterPath &path) const
	Maps the path path, which is in this item's parent's coordinate system, to this item's coordinate system, and returns the mapped path. More...

QPointF	mapFromParent (qreal x, qreal y) const
	This convenience function is equivalent to calling mapFromParent(QPointF(x, y)). More...

QPolygonF	mapFromParent (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapFromItem(QRectF(x, y, w, h)). More...

QPointF	mapFromScene (const QPointF &point) const
	Maps the point point, which is in this item's scene's coordinate system, to this item's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapFromScene (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's scene's coordinate system, to this item's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapFromScene (const QPolygonF &polygon) const
	Maps the polygon polygon, which is in this item's scene's coordinate system, to this item's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapFromScene (const QPainterPath &path) const
	Maps the path path, which is in this item's scene's coordinate system, to this item's coordinate system, and returns the mapped path. More...

QPointF	mapFromScene (qreal x, qreal y) const
	This convenience function is equivalent to calling mapFromScene(QPointF(x, y)). More...

QPolygonF	mapFromScene (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapFromScene(QRectF(x, y, w, h)). More...

QRectF	mapRectFromItem (const QGraphicsItem *item, const QRectF &rect) const
	Maps the rectangle rect, which is in item's coordinate system, to this item's coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const

QRectF	mapRectFromParent (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's parent's coordinate system, to this item's coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectFromParent (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapRectFromParent(QRectF(x, y, w, h)). More...

QRectF	mapRectFromScene (const QRectF &rect) const
	Maps the rectangle rect, which is in scene coordinates, to this item's coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectFromScene (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapRectFromScene(QRectF(x, y, w, h)). More...

QRectF	mapRectToItem (const QGraphicsItem *item, const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to item's coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const

QRectF	mapRectToParent (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to its parent's coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectToParent (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapRectToParent(QRectF(x, y, w, h)). More...

QRectF	mapRectToScene (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to the scene coordinate system, and returns the mapped rectangle as a new rectangle (i. More...

QRectF	mapRectToScene (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapRectToScene(QRectF(x, y, w, h)). More...

QPointF	mapToItem (const QGraphicsItem *item, const QPointF &point) const
	Maps the point point, which is in this item's coordinate system, to item's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapToItem (const QGraphicsItem *item, const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to item's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapToItem (const QGraphicsItem *item, const QPolygonF &polygon) const
	Maps the polygon polygon, which is in this item's coordinate system, to item's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapToItem (const QGraphicsItem *item, const QPainterPath &path) const
	Maps the path path, which is in this item's coordinate system, to item's coordinate system, and returns the mapped path. More...

QPointF	mapToItem (const QGraphicsItem *item, qreal x, qreal y) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This convenience function is equivalent to calling mapToItem(item, QPointF(x, y)). More...

QPolygonF	mapToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const

QPointF	mapToParent (const QPointF &point) const
	Maps the point point, which is in this item's coordinate system, to its parent's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapToParent (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to its parent's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapToParent (const QPolygonF &polygon) const
	Maps the polygon polygon, which is in this item's coordinate system, to its parent's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapToParent (const QPainterPath &path) const
	Maps the path path, which is in this item's coordinate system, to its parent's coordinate system, and returns the mapped path. More...

QPointF	mapToParent (qreal x, qreal y) const
	This convenience function is equivalent to calling mapToParent(QPointF(x, y)). More...

QPolygonF	mapToParent (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapToParent(QRectF(x, y, w, h)). More...

QPointF	mapToScene (const QPointF &point) const
	Maps the point point, which is in this item's coordinate system, to the scene's coordinate system, and returns the mapped coordinate. More...

QPolygonF	mapToScene (const QRectF &rect) const
	Maps the rectangle rect, which is in this item's coordinate system, to the scene's coordinate system, and returns the mapped rectangle as a polygon. More...

QPolygonF	mapToScene (const QPolygonF &polygon) const
	Maps the polygon polygon, which is in this item's coordinate system, to the scene's coordinate system, and returns the mapped polygon. More...

QPainterPath	mapToScene (const QPainterPath &path) const
	Maps the path path, which is in this item's coordinate system, to the scene's coordinate system, and returns the mapped path. More...

QPointF	mapToScene (qreal x, qreal y) const
	This convenience function is equivalent to calling mapToScene(QPointF(x, y)). More...

QPolygonF	mapToScene (qreal x, qreal y, qreal w, qreal h) const
	This convenience function is equivalent to calling mapToScene(QRectF(x, y, w, h)). More...

QMatrix	matrix () const
	Returns the item's affine transformation matrix. More...

void	moveBy (qreal dx, qreal dy)
	Moves the item by dx points horizontally, and dy point vertically. More...

qreal	opacity () const
	Returns this item's local opacity, which is between 0. More...

virtual QPainterPath	opaqueArea () const
	This virtual function returns a shape representing the area where this item is opaque. More...

QGraphicsItem *	panel () const
	Returns the item's panel, or 0 if this item does not have a panel. More...

PanelModality	panelModality () const
	Returns the modality for this item. More...

QGraphicsItem *	parentItem () const
	Returns a pointer to this item's parent item. More...

QGraphicsObject *	parentObject () const
	Returns a pointer to the item's parent, cast to a QGraphicsObject. More...

QGraphicsWidget *	parentWidget () const
	Returns a pointer to the item's parent widget. More...

QPointF	pos () const
	Returns the position of the item in parent coordinates. More...

	QGraphicsItem (QGraphicsItem *parent=0)
	Constructs a QGraphicsItem with the given parent item. More...

void	removeSceneEventFilter (QGraphicsItem *filterItem)
	Removes an event filter on this item from filterItem. More...

void	resetMatrix ()
	Use resetTransform() instead. More...

void	resetTransform ()
	Resets this item's transformation matrix to the identity matrix or all the transformation properties to their default values. More...

void	rotate (qreal angle)
	Use. More...

qreal	rotation () const
	Returns the clockwise rotation, in degrees, around the Z axis. More...

void	scale (qreal sx, qreal sy)
	Use. More...

qreal	scale () const
	Returns the scale factor of the item. More...

QGraphicsScene *	scene () const
	Returns the current scene for the item, or 0 if the item is not stored in a scene. More...

QRectF	sceneBoundingRect () const
	Returns the bounding rect of this item in scene coordinates, by combining sceneTransform() with boundingRect(). More...

QMatrix	sceneMatrix () const
	Use sceneTransform() instead. More...

QPointF	scenePos () const
	Returns the item's position in scene coordinates. More...

QTransform	sceneTransform () const
	Returns this item's scene transformation matrix. More...

void	scroll (qreal dx, qreal dy, const QRectF &rect=QRectF())
	Scrolls the contents of rect by dx, dy. More...

void	setAcceptDrops (bool on)
	If on is true, this item will accept drag and drop events; otherwise, it is transparent for drag and drop events. More...

void	setAcceptedMouseButtons (Qt::MouseButtons buttons)
	Sets the mouse buttons that this item accepts mouse events for. More...

void	setAcceptHoverEvents (bool enabled)
	If enabled is true, this item will accept hover events; otherwise, it will ignore them. More...

void	setAcceptsHoverEvents (bool enabled)
	Use setAcceptHoverEvents(enabled) instead. More...

void	setAcceptTouchEvents (bool enabled)
	If enabled is true, this item will accept touch events; otherwise, it will ignore them. More...

void	setActive (bool active)
	If active is true, and the scene is active, this item's panel will be activated. More...

void	setBoundingRegionGranularity (qreal granularity)
	Sets the bounding region granularity to granularity; a value between and including 0 and 1. More...

void	setCacheMode (CacheMode mode, const QSize &cacheSize=QSize())
	Sets the item's cache mode to mode. More...

void	setCursor (const QCursor &cursor)
	Sets the current cursor shape for the item to cursor. More...

void	setData (int key, const QVariant &value)
	Sets this item's custom data for the key key to value. More...

void	setEnabled (bool enabled)
	If enabled is true, the item is enabled; otherwise, it is disabled. More...

void	setFiltersChildEvents (bool enabled)
	If enabled is true, this item is set to filter all events for all its children (i. More...

void	setFlag (GraphicsItemFlag flag, bool enabled=true)
	If enabled is true, the item flag flag is enabled; otherwise, it is disabled. More...

void	setFlags (GraphicsItemFlags flags)
	Sets the item flags to flags. More...

void	setFocus (Qt::FocusReason focusReason=Qt::OtherFocusReason)
	Gives keyboard input focus to this item. More...

void	setFocusProxy (QGraphicsItem *item)
	Sets the item's focus proxy to item. More...

void	setGraphicsEffect (QGraphicsEffect *effect)
	Sets effect as the item's effect. More...

void	setGroup (QGraphicsItemGroup *group)
	Adds this item to the item group group. More...

void	setHandlesChildEvents (bool enabled)
	If enabled is true, this item is set to handle all events for all its children (i. More...

void	setInputMethodHints (Qt::InputMethodHints hints)
	Sets the current input method hints of this item to hints. More...

void	setMatrix (const QMatrix &matrix, bool combine=false)
	Sets the item's affine transformation matrix. More...

void	setOpacity (qreal opacity)
	Sets this item's local opacity, between 0. More...

void	setPanelModality (PanelModality panelModality)
	Sets the modality for this item to panelModality. More...

void	setParentItem (QGraphicsItem *parent)
	Sets this item's parent item to newParent. More...

void	setPos (const QPointF &pos)
	Sets the position of the item to pos, which is in parent coordinates. More...

void	setPos (qreal x, qreal y)
	This convenience function is equivalent to calling setPos(QPointF(x, y)). More...

void	setRotation (qreal angle)
	Sets the clockwise rotation angle, in degrees, around the Z axis. More...

void	setScale (qreal scale)
	Sets the scale factor of the item. More...

void	setSelected (bool selected)
	If selected is true and this item is selectable, this item is selected; otherwise, it is unselected. More...

void	setToolTip (const QString &toolTip)
	Sets the item's tool tip to toolTip. More...

void	setTransform (const QTransform &matrix, bool combine=false)
	Sets the item's current transformation matrix to matrix. More...

void	setTransformations (const QList< QGraphicsTransform *> &transformations)
	Sets a list of graphics transformations (QGraphicsTransform) that currently apply to this item. More...

void	setTransformOriginPoint (const QPointF &origin)
	Sets the origin point for the transformation in item coordinates. More...

void	setTransformOriginPoint (qreal ax, qreal ay)
	Sets the origin point for the transformation in item coordinates. More...

void	setVisible (bool visible)
	If visible is true, the item is made visible. More...

void	setX (qreal x)
	Set's the x coordinate of the item's position. More...

void	setY (qreal y)
	Set's the y coordinate of the item's position. More...

void	setZValue (qreal z)
	Sets the Z-value of the item to z. More...

virtual QPainterPath	shape () const
	Returns the shape of this item as a QPainterPath in local coordinates. More...

void	shear (qreal sh, qreal sv)
	Use. More...

void	show ()
	Shows the item. More...

void	stackBefore (const QGraphicsItem *sibling)
	Stacks this item before sibling, which must be a sibling item (i. More...

QGraphicsObject *	toGraphicsObject ()
	Return the graphics item cast to a QGraphicsObject, if the class is actually a graphics object, 0 otherwise. More...

const QGraphicsObject *	toGraphicsObject () const
	Return the graphics item cast to a QGraphicsObject, if the class is actually a graphics object, 0 otherwise. More...

QString	toolTip () const
	Returns the item's tool tip, or an empty QString if no tool tip has been set. More...

QGraphicsItem *	topLevelItem () const
	Returns this item's top-level item. More...

QGraphicsWidget *	topLevelWidget () const
	Returns a pointer to the item's top level widget (i. More...

QTransform	transform () const
	Returns this item's transformation matrix. More...

QList< QGraphicsTransform * >	transformations () const
	Returns a list of graphics transforms that currently apply to this item. More...

QPointF	transformOriginPoint () const
	Returns the origin point for the transformation in item coordinates. More...

void	translate (qreal dx, qreal dy)
	Use setPos() or setTransformOriginPoint() instead. More...

virtual int	type () const
	Returns the type of an item as an int. More...

void	ungrabKeyboard ()
	Releases the keyboard grab. More...

void	ungrabMouse ()
	Releases the mouse grab. More...

void	unsetCursor ()
	Clears the cursor from this item. More...

void	update (const QRectF &rect=QRectF())
	Schedules a redraw of the area covered by rect in this item. More...

void	update (qreal x, qreal y, qreal width, qreal height)
	This convenience function is equivalent to calling update(QRectF(x, y, width, height)). More...

QGraphicsWidget *	window () const
	Returns the item's window, or 0 if this item does not have a window. More...

qreal	x () const
	This convenience function is equivalent to calling pos(). More...

qreal	y () const
	This convenience function is equivalent to calling pos(). More...

qreal	zValue () const
	Returns the Z-value of the item. More...

virtual	~QGraphicsItem ()
	Destroys the QGraphicsItem and all its children. More...

Public Functions inherited from QDeclarativeParserStatus
	QDeclarativeParserStatus ()

virtual	~QDeclarativeParserStatus ()

Private Functions
void	attachSourceItem ()

void	detachSourceItem ()

void	updateSizeAndTexture ()

Properties
bool	hideSource
	This property holds the flag to define whether the original source item is hidden when the effect item is drawn. More...

bool	live
	This property holds the optimization flag to define whether the source item content is changing or static. More...

bool	m_checkedForMultisamplingSupport: 1

bool	m_dirtySceneGraph: 1

bool	m_dirtyTexture: 1

ShaderEffectBuffer *	m_fbo

Format	m_format

bool	m_hideSource: 1

bool	m_live: 1

bool	m_mirrored: 1

ShaderEffectBuffer *	m_multisampledFbo

bool	m_multisamplingSupported: 1

int	m_refs

QSize	m_size

QPointer< QDeclarativeItem >	m_sourceItem

QRectF	m_sourceRect

QSize	m_textureSize

WrapMode	m_wrapMode

QDeclarativeItem *	sourceItem
	This property holds the Item which is used as the source for the shader effect. More...

QRectF	sourceRect
	This property can be used to specify margins for the source content. More...

QSize	textureSize
	This property holds the size for the texture containing the source content. More...

WrapMode	wrapMode
	This property defines the wrap parameter for the source after it has been mapped as a texture. More...

Additional Inherited Members
Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Types inherited from QGraphicsItem
enum	Extension { UserExtension = 0x80000000 }
	Note: This is provided as a hook to avoid future problems related to adding virtual functions. More...

Protected Slots inherited from QGraphicsObject
void	updateMicroFocus ()
	Updates the item's micro focus. More...

Protected Functions inherited from QDeclarativeItem
virtual void	classBegin ()

virtual void	componentComplete ()

virtual bool	event (QEvent *)

virtual void	geometryChanged (const QRectF &newGeometry, const QRectF &oldGeometry)
	This function is called to handle this item's changes in geometry from oldGeometry to newGeometry. More...

bool	heightValid () const
	Returns whether the height property has been set explicitly. More...

virtual void	inputMethodEvent (QInputMethodEvent *)

void	inputMethodPreHandler (QInputMethodEvent *)

virtual QVariant	inputMethodQuery (Qt::InputMethodQuery query) const

bool	isComponentComplete () const
	Returns true if construction of the QML component is complete; otherwise returns false. More...

virtual QVariant	itemChange (GraphicsItemChange, const QVariant &)
	Note that unlike QGraphicsItems, QDeclarativeItem::itemChange() is not called during initial widget polishing. More...

virtual void	keyPressEvent (QKeyEvent *event)

void	keyPressPreHandler (QKeyEvent *)

virtual void	keyReleaseEvent (QKeyEvent *event)

void	keyReleasePreHandler (QKeyEvent *)

	QDeclarativeItem (QDeclarativeItemPrivate &dd, QDeclarativeItem *parent=0)

virtual bool	sceneEvent (QEvent *)

void	setImplicitHeight (qreal)
	Sets the implied height of the item to h. More...

void	setImplicitWidth (qreal)
	Sets the implied width of the item to w. More...

bool	widthValid () const
	Returns whether the width property has been set explicitly. More...

Protected Functions inherited from QGraphicsObject
	QGraphicsObject (QGraphicsItemPrivate &dd, QGraphicsItem parent, QGraphicsScene scene)

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Functions inherited from QGraphicsItem
void	addToIndex ()
	Adds this item to the scene's index. More...

virtual void	contextMenuEvent (QGraphicsSceneContextMenuEvent *event)
	This event handler can be reimplemented in a subclass to process context menu events. More...

virtual void	dragEnterEvent (QGraphicsSceneDragDropEvent *event)
	This event handler, for event event, can be reimplemented to receive drag enter events for this item. More...

virtual void	dragLeaveEvent (QGraphicsSceneDragDropEvent *event)
	This event handler, for event event, can be reimplemented to receive drag leave events for this item. More...

virtual void	dragMoveEvent (QGraphicsSceneDragDropEvent *event)
	This event handler, for event event, can be reimplemented to receive drag move events for this item. More...

virtual void	dropEvent (QGraphicsSceneDragDropEvent *event)
	This event handler, for event event, can be reimplemented to receive drop events for this item. More...

virtual QVariant	extension (const QVariant &variant) const
	Note: This is provided as a hook to avoid future problems related to adding virtual functions. More...

virtual void	focusInEvent (QFocusEvent *event)
	This event handler, for event event, can be reimplemented to receive focus in events for this item. More...

virtual void	focusOutEvent (QFocusEvent *event)
	This event handler, for event event, can be reimplemented to receive focus out events for this item. More...

virtual void	hoverEnterEvent (QGraphicsSceneHoverEvent *event)
	This event handler, for event event, can be reimplemented to receive hover enter events for this item. More...

virtual void	hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
	This event handler, for event event, can be reimplemented to receive hover leave events for this item. More...

virtual void	hoverMoveEvent (QGraphicsSceneHoverEvent *event)
	This event handler, for event event, can be reimplemented to receive hover move events for this item. More...

virtual void	mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event)
	This event handler, for event event, can be reimplemented to receive mouse doubleclick events for this item. More...

virtual void	mouseMoveEvent (QGraphicsSceneMouseEvent *event)
	This event handler, for event event, can be reimplemented to receive mouse move events for this item. More...

virtual void	mousePressEvent (QGraphicsSceneMouseEvent *event)
	This event handler, for event event, can be reimplemented to receive mouse press events for this item. More...

virtual void	mouseReleaseEvent (QGraphicsSceneMouseEvent *event)
	This event handler, for event event, can be reimplemented to receive mouse release events for this item. More...

void	prepareGeometryChange ()
	Prepares the item for a geometry change. More...

	QGraphicsItem (QGraphicsItemPrivate &dd, QGraphicsItem parent, QGraphicsScene scene)

void	removeFromIndex ()
	Removes this item from the scene's index. More...

virtual bool	sceneEventFilter (QGraphicsItem watched, QEvent event)
	Filters events for the item watched. More...

virtual void	setExtension (Extension extension, const QVariant &variant)
	Note: This is provided as a hook to avoid future problems related to adding virtual functions. More...

virtual bool	supportsExtension (Extension extension) const
	Note: This is provided as a hook to avoid future problems related to adding virtual functions. More...

void	updateMicroFocus ()
	Updates the item's micro focus. More...

virtual void	wheelEvent (QGraphicsSceneWheelEvent *event)
	This event handler, for event event, can be reimplemented to receive wheel events for this item. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Protected Variables inherited from QGraphicsItem
QScopedPointer< QGraphicsItemPrivate >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Related Functions inherited from QGraphicsItem
T	qgraphicsitem_cast (QGraphicsItem *item)

Detailed Description

The ShaderEffectSource object encapsulates the source content for the ShaderEffectItem.

ShaderEffectSource is available in the Qt.labs.shaders 1.0 module. {Elements in the Qt.labs module are not guaranteed to remain compatible in future versions.}

This element provides preliminary support for OpenGL shaders in QML, and may be heavily changed or removed in later versions.

Requirement for the ability to use of shaders is that the application is either using opengl graphicssystem or has set QGLWidget as the viewport to QDeclarativeView (recommended way).

ShaderEffectSource object encapsulates the source content so that it can be utilized in ShaderEffectItem. Source content can be a live QML object tree, or a snapshot of QML object tree.

Definition at line 54 of file shadereffectsource.h.

Enumerations

◆ Format

enum ShaderEffectSource::Format

Enumerator
Alpha
RGB
RGBA

Definition at line 74 of file shadereffectsource.h.

                 {
         Alpha = GL_ALPHA,
         RGB = GL_RGB,
         RGBA = GL_RGBA
     };

◆ WrapMode

enum ShaderEffectSource::WrapMode

Enumerator
ClampToEdge
RepeatHorizontally
RepeatVertically
Repeat

Definition at line 67 of file shadereffectsource.h.

                   {
             ClampToEdge,
             RepeatHorizontally,
             RepeatVertically,
             Repeat
         };

Constructors and Destructors

◆ ShaderEffectSource()

ShaderEffectSource::ShaderEffectSource ( QDeclarativeItem * parent = 0 )

Definition at line 72 of file shadereffectsource.cpp.

     : QDeclarativeItem(parent)
     , m_sourceItem(0)
     , m_wrapMode(ClampToEdge)
     , m_sourceRect(0, 0, 0, 0)
     , m_textureSize(0, 0)
     , m_format(RGBA)
     , m_size(0, 0)
     , m_fbo(0)
     , m_multisampledFbo(0)
     , m_refs(0)
     , m_dirtyTexture(true)
     , m_dirtySceneGraph(true)
     , m_multisamplingSupported(false)
     , m_checkedForMultisamplingSupport(false)
     , m_live(true)
     , m_hideSource(false)
     , m_mirrored(false)
 {
 }

◆ ~ShaderEffectSource()

ShaderEffectSource::~ShaderEffectSource ( )

virtual

Definition at line 93 of file shadereffectsource.cpp.

 {
     if (m_refs && m_sourceItem)
         detachSourceItem();
 
     delete m_fbo;
     delete m_multisampledFbo;
 }

Functions

◆ activeChanged

void ShaderEffectSource::activeChanged ( )

signal

Referenced by derefFromEffectItem(), isMirrored(), and refFromEffectItem().

◆ attachSourceItem()

void ShaderEffectSource::attachSourceItem ( )

private

Definition at line 437 of file shadereffectsource.cpp.

Referenced by isMirrored(), refFromEffectItem(), and setSourceItem().

 {
     if (!m_sourceItem)
         return;
 
     ShaderEffect *effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect());
 
     if (!effect) {
         effect = new ShaderEffect();
         m_sourceItem->setGraphicsEffect(effect);
     }
 
     if (effect)
         effect->addRenderTarget(this);
 
     m_sourceItem->update();
 }

◆ bind()

void ShaderEffectSource::bind ( )

Definition at line 303 of file shadereffectsource.cpp.

Referenced by isActive(), and ShaderEffectItem::updateEffectState().

 {
     GLint filtering = smooth() ? GL_LINEAR : GL_NEAREST;
     GLuint hwrap = (m_wrapMode == Repeat || m_wrapMode == RepeatHorizontally) ? GL_REPEAT : GL_CLAMP_TO_EDGE;
     GLuint vwrap = (m_wrapMode == Repeat || m_wrapMode == RepeatVertically) ? GL_REPEAT : GL_CLAMP_TO_EDGE;
 
 #if !defined(QT_OPENGL_ES_2)
     glEnable(GL_TEXTURE_2D);
 #endif
 
     if (m_fbo && m_fbo->isValid()) {
         glBindTexture(GL_TEXTURE_2D, m_fbo->texture());
     } else {
         m_dirtyTexture = true;
         emit repaintRequired();
         markSourceItemDirty();
         glBindTexture(GL_TEXTURE_2D, 0);
     }
 
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, smooth() ? GL_LINEAR : GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, hwrap);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, vwrap);
 }

◆ derefFromEffectItem()

void ShaderEffectSource::derefFromEffectItem ( )

Definition at line 336 of file shadereffectsource.cpp.

Referenced by isActive(), ShaderEffectItem::reset(), and ShaderEffectItem::setActive().

 {
     if (--m_refs == 0) {
         detachSourceItem();
         emit activeChanged();
     }
     Q_ASSERT(m_refs >= 0);
 }

◆ detachSourceItem()

void ShaderEffectSource::detachSourceItem ( )

private

Definition at line 455 of file shadereffectsource.cpp.

Referenced by derefFromEffectItem(), isMirrored(), setSourceItem(), and ~ShaderEffectSource().

 {
     if (!m_sourceItem)
         return;
 
     ShaderEffect* effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect());
 
     if (effect)
         effect->removeRenderTarget(this);
 
     delete m_fbo;
     m_fbo = 0;
 
     delete m_multisampledFbo;
     m_multisampledFbo = 0;
 
     m_dirtyTexture = true;
 }

◆ fbo()

ShaderEffectBuffer* ShaderEffectSource::fbo ( )

inline

Definition at line 107 of file shadereffectsource.h.

107 { return m_fbo; }

ShaderEffectSource::m_fbo

ShaderEffectBuffer * m_fbo

Definition: shadereffectsource.h:142

◆ formatChanged

void ShaderEffectSource::formatChanged ( )

signal

Referenced by isMirrored().

◆ grab()

void ShaderEffectSource::grab ( )

Repaints the source item content into the texture.

This method is useful when ShaderEffectSource::live has been set to false and the changes in the source item content is desired to be made visible for the shaders.

Definition at line 297 of file shadereffectsource.cpp.

Referenced by isMirrored().

 {
     m_dirtyTexture = true;
     emit repaintRequired();
 }

◆ hideSource()

bool ShaderEffectSource::hideSource ( ) const

inline

Definition at line 95 of file shadereffectsource.h.

95 { return m_hideSource; }

ShaderEffectSource::m_hideSource

bool m_hideSource

Definition: shadereffectsource.h:150

◆ hideSourceChanged

void ShaderEffectSource::hideSourceChanged ( )

signal

Referenced by isMirrored(), and setHideSource().

◆ isActive()

bool ShaderEffectSource::isActive ( ) const

inline

Definition at line 101 of file shadereffectsource.h.

101 { return m_refs; }

ShaderEffectSource::m_refs

int m_refs

Definition: shadereffectsource.h:144

◆ isDirtyTexture()

bool ShaderEffectSource::isDirtyTexture ( )

inline

Definition at line 108 of file shadereffectsource.h.

108 { return m_dirtyTexture; }

ShaderEffectSource::m_dirtyTexture

bool m_dirtyTexture

Definition: shadereffectsource.h:145

◆ isLive()

bool ShaderEffectSource::isLive ( ) const

inline

Definition at line 92 of file shadereffectsource.h.

92 { return m_live; }

ShaderEffectSource::m_live

bool m_live

Definition: shadereffectsource.h:149

◆ isMirrored()

bool ShaderEffectSource::isMirrored ( )

inline

Definition at line 109 of file shadereffectsource.h.

109 { return m_mirrored; }

ShaderEffectSource::m_mirrored

bool m_mirrored

Definition: shadereffectsource.h:151

◆ liveChanged

void ShaderEffectSource::liveChanged ( )

signal

Referenced by isMirrored(), and setLive().

◆ markSceneGraphDirty

void ShaderEffectSource::markSceneGraphDirty ( )

slot

Definition at line 375 of file shadereffectsource.cpp.

Referenced by isMirrored().

 {
     m_dirtySceneGraph = true;
     emit repaintRequired();
 }

◆ markSourceItemDirty

void ShaderEffectSource::markSourceItemDirty ( )

slot

Definition at line 390 of file shadereffectsource.cpp.

Referenced by bind(), isMirrored(), setSourceRect(), setTextureSize(), and setWrapMode().

 {
     m_dirtyTexture = true;
     if (m_sourceItem) {
         ShaderEffect* effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect());
         if (effect)
             effect->m_changed = true;
     }
 }

◆ markSourceSizeDirty

void ShaderEffectSource::markSourceSizeDirty ( )

slot

Definition at line 381 of file shadereffectsource.cpp.

Referenced by isMirrored(), and setSourceItem().

 {
     Q_ASSERT(m_sourceItem);
     if (m_textureSize.isEmpty())
         updateSizeAndTexture();
     if (m_refs)
         emit repaintRequired();
 }

◆ refFromEffectItem()

void ShaderEffectSource::refFromEffectItem ( )

Definition at line 328 of file shadereffectsource.cpp.

Referenced by isActive(), and ShaderEffectItem::setActive().

 {
     if (m_refs++ == 0) {
         attachSourceItem();
         emit activeChanged();
     }
 }

◆ repaintRequired

void ShaderEffectSource::repaintRequired ( )

signal

Referenced by bind(), grab(), isMirrored(), markSceneGraphDirty(), markSourceSizeDirty(), setHideSource(), setLive(), setSourceItem(), setSourceRect(), and setTextureSize().

◆ setHideSource()

void ShaderEffectSource::setHideSource ( bool hide )

Definition at line 245 of file shadereffectsource.cpp.

Referenced by hideSource().

 {
     if (hide == m_hideSource)
         return;
 
     m_hideSource = hide;
 
     emit hideSourceChanged();
     emit repaintRequired();
 }

◆ setLive()

void ShaderEffectSource::setLive ( bool s )

Definition at line 223 of file shadereffectsource.cpp.

Referenced by isLive().

 {
     if (s == m_live)
         return;
 
     m_live = s;
 
     emit liveChanged();
     emit repaintRequired();
 }

◆ setSourceItem()

void ShaderEffectSource::setSourceItem ( QDeclarativeItem * item )

Definition at line 114 of file shadereffectsource.cpp.

Referenced by sourceItem().

 {
     if (item == m_sourceItem)
         return;
 
     if (m_sourceItem) {
         disconnect(m_sourceItem, SIGNAL(widthChanged()), this, SLOT(markSourceSizeDirty()));
         disconnect(m_sourceItem, SIGNAL(heightChanged()), this, SLOT(markSourceSizeDirty()));
 
         if (m_refs)
             detachSourceItem();
     }
 
     m_sourceItem = item;
 
     if (m_sourceItem) {
 
         // Must have some item as parent
         if (m_sourceItem->parentItem() == 0)
             m_sourceItem->setParentItem(this);
 
         if (m_refs)
             attachSourceItem();
 
         connect(m_sourceItem, SIGNAL(widthChanged()), this, SLOT(markSourceSizeDirty()));
         connect(m_sourceItem, SIGNAL(heightChanged()), this, SLOT(markSourceSizeDirty()));
     }
 
     updateSizeAndTexture();
     emit sourceItemChanged();
     emit repaintRequired();
 }

◆ setSourceRect()

void ShaderEffectSource::setSourceRect ( const QRectF & rect )

Definition at line 166 of file shadereffectsource.cpp.

Referenced by sourceRect().

 {
     if (rect == m_sourceRect)
         return;
     m_sourceRect = rect;
     updateSizeAndTexture();
     emit sourceRectChanged();
     emit repaintRequired();
 
     m_dirtyTexture = true;
     markSourceItemDirty();
 }

◆ setTextureSize()

void ShaderEffectSource::setTextureSize ( const QSize & size )

Definition at line 193 of file shadereffectsource.cpp.

Referenced by textureSize().

 {
     if (size == m_textureSize)
         return;
 
     m_textureSize = size;
     updateSizeAndTexture();
     emit textureSizeChanged();
     emit repaintRequired();
 
     m_dirtyTexture = true;
     markSourceItemDirty();
 }

◆ setWrapMode()

void ShaderEffectSource::setWrapMode ( WrapMode mode )

Definition at line 272 of file shadereffectsource.cpp.

Referenced by wrapMode().

 {
     if (mode == m_wrapMode)
         return;
 
     m_wrapMode = mode;
     emit wrapModeChanged();
 
     m_dirtyTexture = true;
     markSourceItemDirty();
 }

◆ sourceItem()

QDeclarativeItem* ShaderEffectSource::sourceItem ( ) const

inline

Definition at line 83 of file shadereffectsource.h.

83 { return m_sourceItem.data(); }

ShaderEffectSource::m_sourceItem

QPointer< QDeclarativeItem > m_sourceItem

Definition: shadereffectsource.h:135

QPointer::data

T * data() const

Definition: qpointer.h:79

◆ sourceItemChanged

void ShaderEffectSource::sourceItemChanged ( )

signal

Referenced by isMirrored(), and setSourceItem().

◆ sourceRect()

QRectF ShaderEffectSource::sourceRect ( ) const

inline

Definition at line 86 of file shadereffectsource.h.

86 { return m_sourceRect; };

ShaderEffectSource::m_sourceRect

QRectF m_sourceRect

Definition: shadereffectsource.h:137

◆ sourceRectChanged

void ShaderEffectSource::sourceRectChanged ( )

signal

Referenced by isMirrored(), and setSourceRect().

◆ textureSize()

QSize ShaderEffectSource::textureSize ( ) const

inline

Definition at line 89 of file shadereffectsource.h.

89 { return m_textureSize; }

ShaderEffectSource::m_textureSize

QSize m_textureSize

Definition: shadereffectsource.h:138

◆ textureSizeChanged

void ShaderEffectSource::textureSizeChanged ( )

signal

Referenced by isMirrored(), and setTextureSize().

◆ updateBackbuffer()

void ShaderEffectSource::updateBackbuffer ( )

Definition at line 345 of file shadereffectsource.cpp.

Referenced by isActive(), and ShaderEffectItem::preprocess().

 {
     if (!m_sourceItem || !QGLContext::currentContext())
         return;
 
     // Multisampling is not (for now) supported.
     QSize size = QSize(m_sourceItem->width(), m_sourceItem->height());
     if (!m_textureSize.isEmpty())
         size = m_textureSize;
 
     if (size.height() > 0 && size.width() > 0) {
         QGLFramebufferObjectFormat format;
         format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
         format.setInternalTextureFormat(m_format);
 
         if (!m_fbo) {
             m_fbo =  new ShaderEffectBuffer(size, format);
         } else {
             if (!m_fbo->isValid() || m_fbo->size() != size || m_fbo->format().internalTextureFormat() != GLenum(m_format)) {
                 delete m_fbo;
                 m_fbo = 0;
                 m_fbo =  new ShaderEffectBuffer(size, format);
             }
         }
     }
 
     // Note that real update for the source content happens in shadereffect.cpp
     m_dirtyTexture = false;
 }

◆ updateSizeAndTexture()

void ShaderEffectSource::updateSizeAndTexture ( )

private

Definition at line 400 of file shadereffectsource.cpp.

Referenced by isMirrored(), markSourceSizeDirty(), setSourceItem(), setSourceRect(), and setTextureSize().

 {
     if (m_sourceItem) {
         QSize size = m_textureSize;
         if (size.isEmpty())
             size = QSize(m_sourceItem->width(), m_sourceItem->height());
         if (size.width() < 1)
             size.setWidth(1);
         if (size.height() < 1)
             size.setHeight(1);
         if (m_fbo && (m_fbo->size() != size || !m_fbo->isValid())) {
             delete m_fbo;
             m_fbo = 0;
             delete m_multisampledFbo;
             m_fbo = m_multisampledFbo = 0;
         }
         if (m_size.width() != size.width()) {
             m_size.setWidth(size.width());
             emit widthChanged();
         }
         if (m_size.height() != size.height()) {
             m_size.setHeight(size.height());
             emit heightChanged();
         }
         m_dirtyTexture = true;
     } else {
         if (m_size.width() != 0) {
             m_size.setWidth(0);
             emit widthChanged();
         }
         if (m_size.height() != 0) {
             m_size.setHeight(0);
             emit heightChanged();
         }
     }
 }

◆ wrapMode()

WrapMode ShaderEffectSource::wrapMode ( ) const

inline

Definition at line 98 of file shadereffectsource.h.

98 { return m_wrapMode; };

ShaderEffectSource::m_wrapMode

WrapMode m_wrapMode

Definition: shadereffectsource.h:136

◆ wrapModeChanged

void ShaderEffectSource::wrapModeChanged ( )

signal

Referenced by isMirrored(), and setWrapMode().

Properties

◆ hideSource

bool ShaderEffectSource::hideSource

private

This property holds the flag to define whether the original source item is hidden when the effect item is drawn.

The default value is false.

Definition at line 61 of file shadereffectsource.h.

◆ live

bool ShaderEffectSource::live

private

This property holds the optimization flag to define whether the source item content is changing or static.

If value true is assigned to this property, source item content is re-rendered into a texture for every frame. Setting the value to false improves the performance as it skips rendering the source item (and its chidleren) and instead immediately passes the previously rendered and cached texture to the shaders.

The default value is true.

Definition at line 60 of file shadereffectsource.h.

◆ m_checkedForMultisamplingSupport

bool ShaderEffectSource::m_checkedForMultisamplingSupport

private

Definition at line 148 of file shadereffectsource.h.

◆ m_dirtySceneGraph

bool ShaderEffectSource::m_dirtySceneGraph

private

Definition at line 146 of file shadereffectsource.h.

Referenced by markSceneGraphDirty().

◆ m_dirtyTexture

bool ShaderEffectSource::m_dirtyTexture

private

Definition at line 145 of file shadereffectsource.h.

Referenced by bind(), detachSourceItem(), grab(), isDirtyTexture(), markSourceItemDirty(), setSourceRect(), setTextureSize(), setWrapMode(), updateBackbuffer(), and updateSizeAndTexture().

◆ m_fbo

ShaderEffectBuffer* ShaderEffectSource::m_fbo

private

Definition at line 142 of file shadereffectsource.h.

Referenced by bind(), detachSourceItem(), fbo(), updateBackbuffer(), updateSizeAndTexture(), and ~ShaderEffectSource().

◆ m_format

Format ShaderEffectSource::m_format

private

Definition at line 139 of file shadereffectsource.h.

Referenced by updateBackbuffer().

◆ m_hideSource

bool ShaderEffectSource::m_hideSource

private

Definition at line 150 of file shadereffectsource.h.

Referenced by hideSource(), and setHideSource().

◆ m_live

bool ShaderEffectSource::m_live

private

Definition at line 149 of file shadereffectsource.h.

Referenced by isLive(), and setLive().

◆ m_mirrored

bool ShaderEffectSource::m_mirrored

private

Definition at line 151 of file shadereffectsource.h.

Referenced by isMirrored().

◆ m_multisampledFbo

ShaderEffectBuffer* ShaderEffectSource::m_multisampledFbo

private

Definition at line 143 of file shadereffectsource.h.

Referenced by detachSourceItem(), updateSizeAndTexture(), and ~ShaderEffectSource().

◆ m_multisamplingSupported

bool ShaderEffectSource::m_multisamplingSupported

private

Definition at line 147 of file shadereffectsource.h.

◆ m_refs

int ShaderEffectSource::m_refs

private

Definition at line 144 of file shadereffectsource.h.

Referenced by derefFromEffectItem(), isActive(), markSourceSizeDirty(), refFromEffectItem(), setSourceItem(), and ~ShaderEffectSource().

◆ m_size

QSize ShaderEffectSource::m_size

private

Definition at line 140 of file shadereffectsource.h.

Referenced by updateSizeAndTexture().

◆ m_sourceItem

QPointer<QDeclarativeItem> ShaderEffectSource::m_sourceItem

private

Definition at line 135 of file shadereffectsource.h.

Referenced by attachSourceItem(), detachSourceItem(), markSourceItemDirty(), markSourceSizeDirty(), setSourceItem(), sourceItem(), updateBackbuffer(), updateSizeAndTexture(), and ~ShaderEffectSource().

◆ m_sourceRect

QRectF ShaderEffectSource::m_sourceRect

private

Definition at line 137 of file shadereffectsource.h.

Referenced by setSourceRect(), and sourceRect().

◆ m_textureSize

QSize ShaderEffectSource::m_textureSize

private

Definition at line 138 of file shadereffectsource.h.

Referenced by markSourceSizeDirty(), setTextureSize(), textureSize(), updateBackbuffer(), and updateSizeAndTexture().

◆ m_wrapMode

WrapMode ShaderEffectSource::m_wrapMode

private

Definition at line 136 of file shadereffectsource.h.

Referenced by bind(), setWrapMode(), and wrapMode().

◆ sourceItem

Item ShaderEffectSource::sourceItem

private

This property holds the Item which is used as the source for the shader effect.

If the item has children, those are included as well.

Note: When source item content is passed to the ShaderEffectItem(s), it is always clipped to the boundingrect of the sourceItem regardless of its clipping property.

Definition at line 57 of file shadereffectsource.h.

◆ sourceRect

QRectF ShaderEffectSource::sourceRect

private

This property can be used to specify margins for the source content.

If other value than Qt.rect(0,0,0,0) is assigned to this property, it is interpreted as specifying a relative source rectangle for the source content.

For example, setting Qt.rect(-10.0, -10.0, 120.0, 120.0) for a source that has width and height of 100 pixels would produce 10 pixels margins to each side of the source.

Margins are useful when the original content is wanted to be spread outside the original source area, like when creating a dropshadow with the shader or in other similar effects.

The default value is Qt.rect(0,0,0,0).

Definition at line 58 of file shadereffectsource.h.

◆ textureSize

QSize ShaderEffectSource::textureSize

private

This property holds the size for the texture containing the source content.

If value QSize(0,0) is assigned to this property, texture is resized according to the source size. Otherwise source content is scaled to the given size.

The default value is QSize(0,0).

Definition at line 59 of file shadereffectsource.h.

◆ wrapMode

enumeration ShaderEffectSource::wrapMode

private

This property defines the wrap parameter for the source after it has been mapped as a texture.

ShaderEffectSource.ClampToEdge - Causes texturecoordinates to be clamped to the range [ 1/2*N , 1 - 1/2*N ], where N is the texture width.
ShaderEffectSource.RepeatHorizontally - Causes the integer part of the horizontal texturecoordinate to be ignored; the GL uses only the fractional part, thereby creating a horizontal repeating pattern.
ShaderEffectSource.RepeatVertically - Causes the integer part of the vertical texturecoordinate to be ignored; the GL uses only the fractional part, thereby creating a vertical repeating pattern.
ShaderEffectSource.Repeat - Causes the integer part of both the horizontal and vertical texturecoordinates to be ignored; the GL uses only the fractional part, thereby creating a repeating pattern.

The default value is ClampToEdge.

Definition at line 62 of file shadereffectsource.h.

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

/src/imports/shaders/shadereffectsource.h
/src/imports/shaders/shadereffectsource.cpp

Public Types

Public Slots

Signals

Public Functions

Private Functions

Properties

Additional Inherited Members

Detailed Description

Enumerations

◆ Format

◆ WrapMode

Constructors and Destructors

◆ ShaderEffectSource()

◆ ~ShaderEffectSource()

Functions

◆ activeChanged

◆ attachSourceItem()

◆ bind()

◆ derefFromEffectItem()

◆ detachSourceItem()

◆ fbo()

◆ formatChanged

◆ grab()

◆ hideSource()

◆ hideSourceChanged

◆ isActive()

◆ isDirtyTexture()

◆ isLive()

◆ isMirrored()

◆ liveChanged

◆ markSceneGraphDirty

◆ markSourceItemDirty

◆ markSourceSizeDirty

◆ refFromEffectItem()

◆ repaintRequired

◆ setHideSource()

◆ setLive()

◆ setSourceItem()

◆ setSourceRect()

◆ setTextureSize()

◆ setWrapMode()

◆ sourceItem()

◆ sourceItemChanged

◆ sourceRect()

◆ sourceRectChanged

◆ textureSize()

◆ textureSizeChanged

◆ updateBackbuffer()

◆ updateSizeAndTexture()

◆ wrapMode()

◆ wrapModeChanged

Properties

◆ hideSource

◆ live

◆ m_checkedForMultisamplingSupport

◆ m_dirtySceneGraph

◆ m_dirtyTexture

◆ m_fbo

◆ m_format

◆ m_hideSource

◆ m_live

◆ m_mirrored

◆ m_multisampledFbo

◆ m_multisamplingSupported

◆ m_refs

◆ m_size

◆ m_sourceItem

◆ m_sourceRect

◆ m_textureSize

◆ m_wrapMode

◆ sourceItem

◆ sourceRect

◆ textureSize

◆ wrapMode