QtBase  v6.3.1
Public Member Functions | Public Attributes | List of all members
tst_QTouchEventGraphicsItem Class Reference
Inheritance diagram for tst_QTouchEventGraphicsItem:
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Public Member Functions

 tst_QTouchEventGraphicsItem (QGraphicsItem *parent=nullptr)
 
 ~tst_QTouchEventGraphicsItem ()
 
void reset ()
 
QRectF boundingRect () const override
 
void paint (QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) override
 
bool sceneEvent (QEvent *event) override
 
- Public Member Functions inherited from QGraphicsItem
 QGraphicsItem (QGraphicsItem *parent=nullptr)
 
virtual ~QGraphicsItem ()
 
QGraphicsScene * scene () const
 
QGraphicsItem * parentItem () const
 
QGraphicsItem * topLevelItem () const
 
QGraphicsObject * parentObject () const
 
QGraphicsWidget * parentWidget () const
 
QGraphicsWidget * topLevelWidget () const
 
QGraphicsWidget * window () const
 
QGraphicsItem * panel () const
 
void setParentItem (QGraphicsItem *parent)
 
QList< QGraphicsItem * > childItems () const
 
bool isWidget () const
 
bool isWindow () const
 
bool isPanel () const
 
QGraphicsObject * toGraphicsObject ()
 
const QGraphicsObject * toGraphicsObject () const
 
QGraphicsItemGroup * group () const
 
void setGroup (QGraphicsItemGroup *group)
 
GraphicsItemFlags flags () const
 
void setFlag (GraphicsItemFlag flag, bool enabled=true)
 
void setFlags (GraphicsItemFlags flags)
 
CacheMode cacheMode () const
 
void setCacheMode (CacheMode mode, const QSize &cacheSize=QSize())
 
PanelModality panelModality () const
 
void setPanelModality (PanelModality panelModality)
 
bool isBlockedByModalPanel (QGraphicsItem **blockingPanel=nullptr) const
 
QCursor cursor () const
 
void setCursor (const QCursor &cursor)
 
bool hasCursor () const
 
void unsetCursor ()
 
bool isVisible () const
 
bool isVisibleTo (const QGraphicsItem *parent) const
 
void setVisible (bool visible)
 
void hide ()
 
void show ()
 
bool isEnabled () const
 
void setEnabled (bool enabled)
 
bool isSelected () const
 
void setSelected (bool selected)
 
bool acceptDrops () const
 
void setAcceptDrops (bool on)
 
qreal opacity () const
 
qreal effectiveOpacity () const
 
void setOpacity (qreal opacity)
 
Qt::MouseButtons acceptedMouseButtons () const
 
void setAcceptedMouseButtons (Qt::MouseButtons buttons)
 
bool acceptHoverEvents () const
 
void setAcceptHoverEvents (bool enabled)
 
bool acceptTouchEvents () const
 
void setAcceptTouchEvents (bool enabled)
 
bool filtersChildEvents () const
 
void setFiltersChildEvents (bool enabled)
 
bool handlesChildEvents () const
 
void setHandlesChildEvents (bool enabled)
 
bool isActive () const
 
void setActive (bool active)
 
bool hasFocus () const
 
void setFocus (Qt::FocusReason focusReason=Qt::OtherFocusReason)
 
void clearFocus ()
 
QGraphicsItem * focusProxy () const
 
void setFocusProxy (QGraphicsItem *item)
 
QGraphicsItem * focusItem () const
 
QGraphicsItem * focusScopeItem () const
 
void grabMouse ()
 
void ungrabMouse ()
 
void grabKeyboard ()
 
void ungrabKeyboard ()
 
QPointF pos () const
 
qreal x () const
 
void setX (qreal x)
 
qreal y () const
 
void setY (qreal y)
 
QPointF scenePos () const
 
void setPos (const QPointF &pos)
 
void setPos (qreal x, qreal y)
 
void moveBy (qreal dx, qreal dy)
 
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)
 
QTransform transform () const
 
QTransform sceneTransform () const
 
QTransform deviceTransform (const QTransform &viewportTransform) const
 
QTransform itemTransform (const QGraphicsItem *other, bool *ok=nullptr) const
 
void setTransform (const QTransform &matrix, bool combine=false)
 
void resetTransform ()
 
void setRotation (qreal angle)
 
qreal rotation () const
 
void setScale (qreal scale)
 
qreal scale () const
 
QList< QGraphicsTransform * > transformations () const
 
void setTransformations (const QList< QGraphicsTransform * > &transformations)
 
QPointF transformOriginPoint () const
 
void setTransformOriginPoint (const QPointF &origin)
 
void setTransformOriginPoint (qreal ax, qreal ay)
 
virtual void advance (int phase)
 
qreal zValue () const
 
void setZValue (qreal z)
 
void stackBefore (const QGraphicsItem *sibling)
 
QRectF childrenBoundingRect () const
 
QRectF sceneBoundingRect () const
 
virtual QPainterPath shape () const
 
bool isClipped () const
 
QPainterPath clipPath () const
 
virtual bool contains (const QPointF &point) 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
 
bool isObscured (const QRectF &rect=QRectF()) const
 
bool isObscured (qreal x, qreal y, qreal w, qreal h) const
 
virtual bool isObscuredBy (const QGraphicsItem *item) const
 
virtual QPainterPath opaqueArea () const
 
QRegion boundingRegion (const QTransform &itemToDeviceTransform) const
 
qreal boundingRegionGranularity () const
 
void setBoundingRegionGranularity (qreal granularity)
 
void update (const QRectF &rect=QRectF())
 
void update (qreal x, qreal y, qreal width, qreal height)
 
void scroll (qreal dx, qreal dy, const QRectF &rect=QRectF())
 
QPointF mapToItem (const QGraphicsItem *item, const QPointF &point) const
 
QPointF mapToParent (const QPointF &point) const
 
QPointF mapToScene (const QPointF &point) const
 
QPolygonF mapToItem (const QGraphicsItem *item, const QRectF &rect) const
 
QPolygonF mapToParent (const QRectF &rect) const
 
QPolygonF mapToScene (const QRectF &rect) const
 
QRectF mapRectToItem (const QGraphicsItem *item, const QRectF &rect) const
 
QRectF mapRectToParent (const QRectF &rect) const
 
QRectF mapRectToScene (const QRectF &rect) const
 
QPolygonF mapToItem (const QGraphicsItem *item, const QPolygonF &polygon) const
 
QPolygonF mapToParent (const QPolygonF &polygon) const
 
QPolygonF mapToScene (const QPolygonF &polygon) const
 
QPainterPath mapToItem (const QGraphicsItem *item, const QPainterPath &path) const
 
QPainterPath mapToParent (const QPainterPath &path) const
 
QPainterPath mapToScene (const QPainterPath &path) const
 
QPointF mapFromItem (const QGraphicsItem *item, const QPointF &point) const
 
QPointF mapFromParent (const QPointF &point) const
 
QPointF mapFromScene (const QPointF &point) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, const QRectF &rect) const
 
QPolygonF mapFromParent (const QRectF &rect) const
 
QPolygonF mapFromScene (const QRectF &rect) const
 
QRectF mapRectFromItem (const QGraphicsItem *item, const QRectF &rect) const
 
QRectF mapRectFromParent (const QRectF &rect) const
 
QRectF mapRectFromScene (const QRectF &rect) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, const QPolygonF &polygon) const
 
QPolygonF mapFromParent (const QPolygonF &polygon) const
 
QPolygonF mapFromScene (const QPolygonF &polygon) const
 
QPainterPath mapFromItem (const QGraphicsItem *item, const QPainterPath &path) const
 
QPainterPath mapFromParent (const QPainterPath &path) const
 
QPainterPath mapFromScene (const QPainterPath &path) const
 
QPointF mapToItem (const QGraphicsItem *item, qreal x, qreal y) const
 
QPointF mapToParent (qreal x, qreal y) const
 
QPointF mapToScene (qreal x, qreal y) const
 
QPolygonF mapToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapToParent (qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapToScene (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToParent (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToScene (qreal x, qreal y, qreal w, qreal h) const
 
QPointF mapFromItem (const QGraphicsItem *item, qreal x, qreal y) const
 
QPointF mapFromParent (qreal x, qreal y) const
 
QPointF mapFromScene (qreal x, qreal y) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapFromParent (qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapFromScene (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromParent (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromScene (qreal x, qreal y, qreal w, qreal h) const
 
bool isAncestorOf (const QGraphicsItem *child) const
 
QGraphicsItem * commonAncestorItem (const QGraphicsItem *other) const
 
bool isUnderMouse () const
 
QVariant data (int key) const
 
void setData (int key, const QVariant &value)
 
Qt::InputMethodHints inputMethodHints () const
 
void setInputMethodHints (Qt::InputMethodHints hints)
 
virtual int type () const
 
void installSceneEventFilter (QGraphicsItem *filterItem)
 
void removeSceneEventFilter (QGraphicsItem *filterItem)
 

Public Attributes

QList< QEventPoint > touchBeginPoints
 
QList< QEventPoint > touchUpdatePoints
 
QList< QEventPoint > touchEndPoints
 
bool seenTouchBegin
 
bool seenTouchUpdate
 
bool seenTouchEnd
 
int touchBeginCounter
 
int touchUpdateCounter
 
int touchEndCounter
 
bool acceptTouchBegin
 
bool acceptTouchUpdate
 
bool acceptTouchEnd
 
bool deleteInTouchBegin
 
bool deleteInTouchUpdate
 
bool deleteInTouchEnd
 
tst_QTouchEventGraphicsItem ** weakpointer
 

Additional Inherited Members

- Public Types inherited from QGraphicsItem
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 , ItemContainsChildrenInShape = 0x80000
}
 
enum  GraphicsItemChange {
  ItemPositionChange , ItemVisibleChange = 2 , 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
}
 
enum  CacheMode { NoCache , ItemCoordinateCache , DeviceCoordinateCache }
 
enum  PanelModality { NonModal , PanelModal , SceneModal }
 
enum  { Type = 1 , UserType = 65536 }
 
- Protected Types inherited from QGraphicsItem
enum  Extension { UserExtension = 0x80000000 }
 
- Protected Member Functions inherited from QGraphicsItem
void updateMicroFocus ()
 
virtual bool sceneEventFilter (QGraphicsItem *watched, QEvent *event)
 
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 hoverMoveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void keyPressEvent (QKeyEvent *event)
 
virtual void keyReleaseEvent (QKeyEvent *event)
 
virtual void mousePressEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event)
 
virtual void wheelEvent (QGraphicsSceneWheelEvent *event)
 
virtual void inputMethodEvent (QInputMethodEvent *event)
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery query) const
 
virtual QVariant itemChange (GraphicsItemChange change, const QVariant &value)
 
virtual bool supportsExtension (Extension extension) const
 
virtual void setExtension (Extension extension, const QVariant &variant)
 
virtual QVariant extension (const QVariant &variant) const
 
 QGraphicsItem (QGraphicsItemPrivate &dd, QGraphicsItem *parent)
 
void addToIndex ()
 
void removeFromIndex ()
 
void prepareGeometryChange ()
 
- Protected Attributes inherited from QGraphicsItem
QScopedPointer< QGraphicsItemPrivate > d_ptr
 
- Related Functions inherited from QGraphicsItem
T qgraphicsitem_cast (QGraphicsItem *item)
 

Detailed Description

Definition at line 133 of file tst_qtouchevent.cpp.

Constructor & Destructor Documentation

◆ tst_QTouchEventGraphicsItem()

tst_QTouchEventGraphicsItem::tst_QTouchEventGraphicsItem ( QGraphicsItem *  parent = nullptr)
inlineexplicit

Definition at line 143 of file tst_qtouchevent.cpp.

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◆ ~tst_QTouchEventGraphicsItem()

tst_QTouchEventGraphicsItem::~tst_QTouchEventGraphicsItem ( )
inline

Definition at line 149 of file tst_qtouchevent.cpp.

Member Function Documentation

◆ boundingRect()

QRectF tst_QTouchEventGraphicsItem::boundingRect ( ) const
inlineoverridevirtual

This pure virtual function defines the outer bounds of the item as a rectangle; all painting must be restricted to inside an item's bounding rect. QGraphicsView uses this to determine whether the item requires redrawing.

Although the item's shape can be arbitrary, the bounding rect is always rectangular, and it is unaffected by the items' transformation.

If you want to change the item's bounding rectangle, you must first call prepareGeometryChange(). This notifies the scene of the imminent change, so that it can update its item geometry index; otherwise, the scene will be unaware of the item's new geometry, and the results are undefined (typically, rendering artifacts are left within the view).

Reimplement this function to let QGraphicsView determine what parts of the widget, if any, need to be redrawn.

Note: For shapes that paint an outline / stroke, it is important to include half the pen width in the bounding rect. It is not necessary to compensate for antialiasing, though.

Example:

See also
boundingRegion(), shape(), contains(), {The Graphics View Coordinate System}, prepareGeometryChange()

Implements QGraphicsItem.

Definition at line 166 of file tst_qtouchevent.cpp.

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◆ paint()

void tst_QTouchEventGraphicsItem::paint ( QPainter *  painter,
const QStyleOptionGraphicsItem *  option,
QWidget *  widget 
)
inlineoverridevirtual

This function, which is usually called by QGraphicsView, paints the contents of an item in local coordinates.

Reimplement this function in a QGraphicsItem subclass to provide the item's painting implementation, using painter. The option parameter provides style options for the item, such as its state, exposed area and its level-of-detail hints. The widget argument is optional. If provided, it points to the widget that is being painted on; otherwise, it is 0. For cached painting, widget is always 0.

The painter's pen is 0-width by default, and its pen is initialized to the QPalette::Text brush from the paint device's palette. The brush is initialized to QPalette::Window.

Make sure to constrain all painting inside the boundaries of boundingRect() to avoid rendering artifacts (as QGraphicsView does not clip the painter for you). In particular, when QPainter renders the outline of a shape using an assigned QPen, half of the outline will be drawn outside, and half inside, the shape you're rendering (e.g., with a pen width of 2 units, you must draw outlines 1 unit inside boundingRect()). QGraphicsItem does not support use of cosmetic pens with a non-zero width.

All painting is done in local coordinates.

Note
It is mandatory that an item will always redraw itself in the exact same way, unless update() was called; otherwise visual artifacts may occur. In other words, two subsequent calls to paint() must always produce the same output, unless update() was called between them.
Enabling caching for an item does not guarantee that paint() will be invoked only once by the Graphics View framework, even without any explicit call to update(). See the documentation of setCacheMode() for more details.
See also
setCacheMode(), QPen::width(), {Item Coordinates}, ItemUsesExtendedStyleOption

Implements QGraphicsItem.

Definition at line 167 of file tst_qtouchevent.cpp.

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◆ reset()

void tst_QTouchEventGraphicsItem::reset ( )
inline

Definition at line 155 of file tst_qtouchevent.cpp.

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◆ sceneEvent()

bool tst_QTouchEventGraphicsItem::sceneEvent ( QEvent *  event)
inlineoverridevirtual

This virtual function receives events to this item. Reimplement this function to intercept events before they are dispatched to the specialized event handlers contextMenuEvent(), focusInEvent(), focusOutEvent(), hoverEnterEvent(), hoverMoveEvent(), hoverLeaveEvent(), keyPressEvent(), keyReleaseEvent(), mousePressEvent(), mouseReleaseEvent(), mouseMoveEvent(), and mouseDoubleClickEvent().

Returns true if the event was recognized and handled; otherwise, (e.g., if the event type was not recognized,) false is returned.

event is the intercepted event.

Reimplemented from QGraphicsItem.

Definition at line 172 of file tst_qtouchevent.cpp.

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Member Data Documentation

◆ acceptTouchBegin

bool tst_QTouchEventGraphicsItem::acceptTouchBegin

Definition at line 139 of file tst_qtouchevent.cpp.

◆ acceptTouchEnd

bool tst_QTouchEventGraphicsItem::acceptTouchEnd

Definition at line 139 of file tst_qtouchevent.cpp.

◆ acceptTouchUpdate

bool tst_QTouchEventGraphicsItem::acceptTouchUpdate

Definition at line 139 of file tst_qtouchevent.cpp.

◆ deleteInTouchBegin

bool tst_QTouchEventGraphicsItem::deleteInTouchBegin

Definition at line 140 of file tst_qtouchevent.cpp.

◆ deleteInTouchEnd

bool tst_QTouchEventGraphicsItem::deleteInTouchEnd

Definition at line 140 of file tst_qtouchevent.cpp.

◆ deleteInTouchUpdate

bool tst_QTouchEventGraphicsItem::deleteInTouchUpdate

Definition at line 140 of file tst_qtouchevent.cpp.

◆ seenTouchBegin

bool tst_QTouchEventGraphicsItem::seenTouchBegin

Definition at line 137 of file tst_qtouchevent.cpp.

◆ seenTouchEnd

bool tst_QTouchEventGraphicsItem::seenTouchEnd

Definition at line 137 of file tst_qtouchevent.cpp.

◆ seenTouchUpdate

bool tst_QTouchEventGraphicsItem::seenTouchUpdate

Definition at line 137 of file tst_qtouchevent.cpp.

◆ touchBeginCounter

int tst_QTouchEventGraphicsItem::touchBeginCounter

Definition at line 138 of file tst_qtouchevent.cpp.

◆ touchBeginPoints

QList<QEventPoint> tst_QTouchEventGraphicsItem::touchBeginPoints

Definition at line 136 of file tst_qtouchevent.cpp.

◆ touchEndCounter

int tst_QTouchEventGraphicsItem::touchEndCounter

Definition at line 138 of file tst_qtouchevent.cpp.

◆ touchEndPoints

QList<QEventPoint> tst_QTouchEventGraphicsItem::touchEndPoints

Definition at line 136 of file tst_qtouchevent.cpp.

◆ touchUpdateCounter

int tst_QTouchEventGraphicsItem::touchUpdateCounter

Definition at line 138 of file tst_qtouchevent.cpp.

◆ touchUpdatePoints

QList<QEventPoint> tst_QTouchEventGraphicsItem::touchUpdatePoints

Definition at line 136 of file tst_qtouchevent.cpp.

◆ weakpointer

tst_QTouchEventGraphicsItem** tst_QTouchEventGraphicsItem::weakpointer

Definition at line 141 of file tst_qtouchevent.cpp.

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