Viadeo Twitter Google Bookmarks ! Facebook Digg del.icio.us MySpace Yahoo MyWeb Blinklist Netvouz Reddit Simpy StumbleUpon Bookmarks Windows Live Favorites 
Logo Documentation Qt ·  Page d'accueil  ·  Toutes les classes  ·  Classes principales  ·  Annotées  ·  Classes groupées  ·  Modules  ·  Fonctions  · 

QGraphicsVideoItem Class

The QGraphicsVideoItem class provides a graphics item which display video produced by a QMediaObject. More...

 #include <QGraphicsVideoItem>

Inherits: QGraphicsObject and QMediaBindableInterface.

Public Types

enum CacheMode { NoCache, ItemCoordinateCache, DeviceCoordinateCache }
enum GraphicsItemChange { ItemEnabledChange, ItemEnabledHasChanged, ItemMatrixChange, ItemPositionChange, ..., ItemScenePositionHasChanged }
enum GraphicsItemFlag { ItemIsMovable, ItemIsSelectable, ItemIsFocusable, ItemClipsToShape, ..., ItemSendsScenePositionChanges }
flags GraphicsItemFlags
enum PanelModality { NonModal, PanelModal, SceneModal }

Properties

Public Functions

QGraphicsItem(QGraphicsItem * parent = 0)
QGraphicsVideoItem(QGraphicsItem * parent = 0)
virtual ~QGraphicsItem()
~QGraphicsVideoItem()
virtual ~QMediaBindableInterface()
bool acceptDrops() const
bool acceptHoverEvents() const
bool acceptTouchEvents() const
Qt::MouseButtons acceptedMouseButtons() const
virtual void advance(int phase)
Qt::AspectRatioMode aspectRatioMode() const
virtual QRectF boundingRect() const = 0
QRegion boundingRegion(const QTransform & itemToDeviceTransform) const
qreal boundingRegionGranularity() const
CacheMode cacheMode() const
QList<QGraphicsItem *> childItems() const
QRectF childrenBoundingRect() const
void clearFocus()
QPainterPath clipPath() const
virtual bool collidesWithItem(const QGraphicsItem * other, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const
virtual bool collidesWithPath(const QPainterPath & path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const
QList<QGraphicsItem *> collidingItems(Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const
QGraphicsItem * commonAncestorItem(const QGraphicsItem * other) const
virtual bool contains(const QPointF & point) const
QCursor cursor() const
QVariant data(int key) const
QTransform deviceTransform(const QTransform & viewportTransform) const
qreal effectiveOpacity() const
void ensureVisible(const QRectF & rect = QRectF(), int xmargin = 50, int ymargin = 50)
void ensureVisible(qreal x, qreal y, qreal w, qreal h, int xmargin = 50, int ymargin = 50)
bool filtersChildEvents() const
GraphicsItemFlags flags() const
QGraphicsItem * focusItem() const
QGraphicsItem * focusProxy() const
void grabKeyboard()
void grabMouse()
QGraphicsEffect * graphicsEffect() const
QGraphicsItemGroup * group() const
bool hasCursor() const
bool hasFocus() const
void hide()
Qt::InputMethodHints inputMethodHints() const
void installSceneEventFilter(QGraphicsItem * filterItem)
bool isActive() const
bool isAncestorOf(const QGraphicsItem * child) const
bool isBlockedByModalPanel(QGraphicsItem ** blockingPanel = 0) const
bool isClipped() const
bool isEnabled() const
bool isObscured() const
bool isObscured(qreal x, qreal y, qreal w, qreal h) const
bool isObscured(const QRectF & rect) const
virtual bool isObscuredBy(const QGraphicsItem * item) const
bool isPanel() const
bool isSelected() const
bool isUnderMouse() const
bool isVisible() const
bool isVisibleTo(const QGraphicsItem * parent) const
bool isWidget() const
bool isWindow() const
QTransform itemTransform(const QGraphicsItem * other, bool * ok = 0) const
QPointF mapFromItem(const QGraphicsItem * item, const QPointF & point) const
QPolygonF mapFromItem(const QGraphicsItem * item, const QRectF & rect) const
QPolygonF mapFromItem(const QGraphicsItem * item, const QPolygonF & polygon) const
QPainterPath mapFromItem(const QGraphicsItem * item, const QPainterPath & path) const
QPolygonF mapFromItem(const QGraphicsItem * item, qreal x, qreal y, qreal w, qreal h) const
QPointF mapFromItem(const QGraphicsItem * item, qreal x, qreal y) const
QPointF mapFromParent(const QPointF & point) const
QPolygonF mapFromParent(const QRectF & rect) const
QPolygonF mapFromParent(const QPolygonF & polygon) const
QPainterPath mapFromParent(const QPainterPath & path) const
QPolygonF mapFromParent(qreal x, qreal y, qreal w, qreal h) const
QPointF mapFromParent(qreal x, qreal y) const
QPointF mapFromScene(const QPointF & point) const
QPolygonF mapFromScene(const QRectF & rect) const
QPolygonF mapFromScene(const QPolygonF & polygon) const
QPainterPath mapFromScene(const QPainterPath & path) const
QPolygonF mapFromScene(qreal x, qreal y, qreal w, qreal h) const
QPointF mapFromScene(qreal x, qreal y) const
QRectF mapRectFromItem(const QGraphicsItem * item, const QRectF & rect) const
QRectF mapRectFromItem(const QGraphicsItem * item, qreal x, qreal y, qreal w, qreal h) const
QRectF mapRectFromParent(const QRectF & rect) const
QRectF mapRectFromParent(qreal x, qreal y, qreal w, qreal h) const
QRectF mapRectFromScene(const QRectF & rect) const
QRectF mapRectFromScene(qreal x, qreal y, qreal w, qreal h) const
QRectF mapRectToItem(const QGraphicsItem * item, const QRectF & rect) const
QRectF mapRectToItem(const QGraphicsItem * item, qreal x, qreal y, qreal w, qreal h) const
QRectF mapRectToParent(const QRectF & rect) const
QRectF mapRectToParent(qreal x, qreal y, qreal w, qreal h) const
QRectF mapRectToScene(const QRectF & rect) const
QRectF mapRectToScene(qreal x, qreal y, qreal w, qreal h) const
QPointF mapToItem(const QGraphicsItem * item, const QPointF & point) const
QPolygonF mapToItem(const QGraphicsItem * item, const QRectF & rect) const
QPolygonF mapToItem(const QGraphicsItem * item, const QPolygonF & polygon) const
QPainterPath mapToItem(const QGraphicsItem * item, const QPainterPath & path) const
QPolygonF mapToItem(const QGraphicsItem * item, qreal x, qreal y, qreal w, qreal h) const
QPointF mapToItem(const QGraphicsItem * item, qreal x, qreal y) const
QPointF mapToParent(const QPointF & point) const
QPolygonF mapToParent(const QRectF & rect) const
QPolygonF mapToParent(const QPolygonF & polygon) const
QPainterPath mapToParent(const QPainterPath & path) const
QPolygonF mapToParent(qreal x, qreal y, qreal w, qreal h) const
QPointF mapToParent(qreal x, qreal y) const
QPointF mapToScene(const QPointF & point) const
QPolygonF mapToScene(const QRectF & rect) const
QPolygonF mapToScene(const QPolygonF & polygon) const
QPainterPath mapToScene(const QPainterPath & path) const
QPolygonF mapToScene(qreal x, qreal y, qreal w, qreal h) const
QPointF mapToScene(qreal x, qreal y) const
virtual QMediaObject * mediaObject() const = 0
void moveBy(qreal dx, qreal dy)
QSizeF nativeSize() const
QPointF offset() const
qreal opacity() const
virtual QPainterPath opaqueArea() const
virtual void paint(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget = 0) = 0
QGraphicsItem * panel() const
PanelModality panelModality() const
QGraphicsItem * parentItem() const
QGraphicsObject * parentObject() const
QGraphicsWidget * parentWidget() const
QPointF pos() const
void removeSceneEventFilter(QGraphicsItem * filterItem)
void resetTransform()
qreal rotation() const
qreal scale() const
QGraphicsScene * scene() const
QRectF sceneBoundingRect() const
QPointF scenePos() const
QTransform sceneTransform() const
void scroll(qreal dx, qreal dy, const QRectF & rect = QRectF())
void setAcceptDrops(bool on)
void setAcceptHoverEvents(bool enabled)
void setAcceptTouchEvents(bool enabled)
void setAcceptedMouseButtons(Qt::MouseButtons buttons)
void setActive(bool active)
void setAspectRatioMode(Qt::AspectRatioMode mode)
void setBoundingRegionGranularity(qreal granularity)
void setCacheMode(CacheMode mode, const QSize & logicalCacheSize = QSize())
void setCursor(const QCursor & cursor)
void setData(int key, const QVariant & value)
void setEnabled(bool enabled)
void setFiltersChildEvents(bool enabled)
void setFlag(GraphicsItemFlag flag, bool enabled = true)
void setFlags(GraphicsItemFlags flags)
void setFocus(Qt::FocusReason focusReason = Qt::OtherFocusReason)
void setFocusProxy(QGraphicsItem * item)
void setGraphicsEffect(QGraphicsEffect * effect)
void setGroup(QGraphicsItemGroup * group)
void setInputMethodHints(Qt::InputMethodHints hints)
void setOffset(const QPointF & offset)
void setOpacity(qreal opacity)
void setPanelModality(PanelModality panelModality)
void setParentItem(QGraphicsItem * newParent)
void setPos(const QPointF & pos)
void setPos(qreal x, qreal y)
void setRotation(qreal angle)
void setScale(qreal factor)
void setSelected(bool selected)
void setSize(const QSizeF & size)
void setToolTip(const QString & toolTip)
void setTransform(const QTransform & matrix, bool combine = false)
void setTransformOriginPoint(const QPointF & origin)
void setTransformOriginPoint(qreal x, qreal y)
void setTransformations(const QList<QGraphicsTransform *> & transformations)
void setVisible(bool visible)
void setX(qreal x)
void setY(qreal y)
void setZValue(qreal z)
virtual QPainterPath shape() const
void show()
QSizeF size() const
void stackBefore(const QGraphicsItem * sibling)
QGraphicsObject * toGraphicsObject()
const QGraphicsObject * toGraphicsObject() const
QString toolTip() const
QGraphicsItem * topLevelItem() const
QGraphicsWidget * topLevelWidget() const
QTransform transform() const
QPointF transformOriginPoint() const
QList<QGraphicsTransform *> transformations() const
virtual int type() const
void ungrabKeyboard()
void ungrabMouse()
void unsetCursor()
void update(const QRectF & rect = QRectF())
void update(qreal x, qreal y, qreal width, qreal height)
QGraphicsWidget * window() const
qreal x() const
qreal y() const
qreal zValue() const

Reimplemented Public Functions

virtual QRectF boundingRect() const
virtual QMediaObject * mediaObject() const
virtual void paint(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget = 0)

Signals

void nativeSizeChanged(const QSizeF & size)

Static Public Members

const int Type
const int UserType
  • 11 static public members inherited from QObject

Protected Functions

virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent * event)
virtual void dragEnterEvent(QGraphicsSceneDragDropEvent * event)
virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent * event)
virtual void dragMoveEvent(QGraphicsSceneDragDropEvent * event)
virtual void dropEvent(QGraphicsSceneDragDropEvent * event)
virtual void focusInEvent(QFocusEvent * event)
virtual void focusOutEvent(QFocusEvent * event)
virtual void hoverEnterEvent(QGraphicsSceneHoverEvent * event)
virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent * event)
virtual void hoverMoveEvent(QGraphicsSceneHoverEvent * event)
virtual void inputMethodEvent(QInputMethodEvent * event)
virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const
virtual QVariant itemChange(GraphicsItemChange change, const QVariant & value)
virtual void keyPressEvent(QKeyEvent * event)
virtual void keyReleaseEvent(QKeyEvent * event)
virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent * event)
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent * event)
virtual void mousePressEvent(QGraphicsSceneMouseEvent * event)
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent * event)
void prepareGeometryChange()
virtual bool sceneEvent(QEvent * event)
virtual bool sceneEventFilter(QGraphicsItem * watched, QEvent * event)
virtual bool setMediaObject(QMediaObject * object) = 0
void updateMicroFocus()
virtual void wheelEvent(QGraphicsSceneWheelEvent * event)
  • 9 protected functions inherited from QObject

Additional Inherited Members

Detailed Description

The QGraphicsVideoItem class provides a graphics item which display video produced by a QMediaObject.

Attaching a QGraphicsVideoItem to a QMediaObject allows it to display the video or image output of that media object. A QGraphicsVideoItem is attached to a media object by passing a pointer to the QMediaObject to the setMediaObject() function.

 player = new QMediaPlayer(this);

 QGraphicsVideoItem *item = new QGraphicsVideoItem;
 player->setVideoOutput(item);
 graphicsView->scene()->addItem(item);
 graphicsView->show();

 player->setMedia(QUrl("http://example.com/myclip4.ogv"));
 player->play();

Note: Only a single display output can be attached to a media object at one time.

See also QMediaObject, QMediaPlayer, and QVideoWidget.

Property Documentation

aspectRatioMode : Qt::AspectRatioMode

This property holds how a video is scaled to fit the graphics item's size.

Access functions:

Qt::AspectRatioMode aspectRatioMode() const
void setAspectRatioMode(Qt::AspectRatioMode mode)

mediaObject : QMediaObject * const

This property holds the media object which provides the video displayed by a graphics item.

Access functions:

virtual QMediaObject * mediaObject() const

nativeSize : const QSizeF

This property holds the native size of the video.

Access functions:

QSizeF nativeSize() const

Notifier signal:

void nativeSizeChanged(const QSizeF & size)

offset : QPointF

This property holds the video item's offset.

QGraphicsVideoItem will draw video using the offset for its top left corner.

Access functions:

QPointF offset() const
void setOffset(const QPointF & offset)

size : QSizeF

This property holds the video item's size.

QGraphicsVideoItem will draw video scaled to fit size according to its fillMode.

Access functions:

QSizeF size() const
void setSize(const QSizeF & size)

Member Function Documentation

QGraphicsVideoItem::QGraphicsVideoItem(QGraphicsItem * parent = 0)

Constructs a graphics item that displays video.

The parent is passed to QGraphicsItem.

QGraphicsVideoItem::~QGraphicsVideoItem()

Destroys a video graphics item.

QRectF QGraphicsVideoItem::boundingRect() const [virtual]

Reimplemented from QGraphicsItem::boundingRect().

void QGraphicsVideoItem::paint(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget = 0) [virtual]

Reimplemented from QGraphicsItem::paint().

Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia. Qt 5.0-snapshot
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD.
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP !
 
 
 
 
Partenaires

Hébergement Web