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Qt 4.8
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Qt 4.8
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The QGraphicsColorizeEffect class provides a colorize effect. More...
#include <qgraphicseffect.h>
Public Slots | |
| void | setColor (const QColor &c) |
| void | setStrength (qreal strength) |
 Public Slots inherited from QGraphicsEffect | |
| void | setEnabled (bool enable) |
| void | update () |
| Schedules a redraw of the effect. More... | |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| Schedules this object for deletion. More... | |
Signals | |
| void | colorChanged (const QColor &color) |
| This signal is emitted whenever the effect's color changes. More... | |
| void | strengthChanged (qreal strength) |
| This signal is emitted whenever setStrength() changes the colorize strength property. More... | |
| Signals inherited from QGraphicsEffect | |
| void | enabledChanged (bool enabled) |
| This signal is emitted whenever the effect is enabled or disabled. 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 | |
| QColor | color () const |
| QGraphicsColorizeEffect (QObject *parent=0) | |
| Constructs a new QGraphicsColorizeEffect instance. More... | |
| qreal | strength () const |
| ~QGraphicsColorizeEffect () | |
| Destroys the effect. More... | |
| Public Functions inherited from QGraphicsEffect | |
| QRectF | boundingRect () const |
| Returns the effective bounding rectangle for this effect, i.e., the bounding rectangle of the source in device coordinates, adjusted by any margins applied by the effect itself. More... | |
| virtual QRectF | boundingRectFor (const QRectF &sourceRect) const |
| Returns the effective bounding rectangle for this effect, given the provided rect in the device coordinates. More... | |
| bool | isEnabled () const |
| QGraphicsEffect (QObject *parent=0) | |
| Constructs a new QGraphicsEffect instance having the specified parent. More... | |
| QGraphicsEffectSource * | source () const |
| Returns a pointer to the source, which provides extra context information that can be useful for the effect. More... | |
| virtual | ~QGraphicsEffect () |
| Removes the effect from the source, and destroys the graphics effect. 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 | event (QEvent *) |
| This virtual function receives events to an object and should return true if the event e was recognized and processed. 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... | |
Protected Functions | |
| void | draw (QPainter *painter) |
| Reimplemented Function More... | |
| Protected Functions inherited from QGraphicsEffect | |
| void | drawSource (QPainter *painter) |
| Draws the source directly using the given painter. More... | |
| QGraphicsEffect (QGraphicsEffectPrivate &d, QObject *parent=0) | |
| QRectF | sourceBoundingRect (Qt::CoordinateSystem system=Qt::LogicalCoordinates) const |
| Returns the bounding rectangle of the source mapped to the given system. More... | |
| virtual void | sourceChanged (ChangeFlags flags) |
| This virtual function is called by QGraphicsEffect to notify the effect that the source has changed. More... | |
| bool | sourceIsPixmap () const |
| Returns true if the source effectively is a pixmap, e.g., a QGraphicsPixmapItem. More... | |
| QPixmap | sourcePixmap (Qt::CoordinateSystem system=Qt::LogicalCoordinates, QPoint *offset=0, PixmapPadMode mode=PadToEffectiveBoundingRect) const |
| Returns a pixmap with the source painted into it. More... | |
| void | updateBoundingRect () |
| This function notifies the effect framework when the effect's bounding rectangle has changed. More... | |
| 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... | |
Properties | |
| QColor | color |
| the color of the effect. More... | |
| qreal | strength |
| the strength of the effect. More... | |
Additional Inherited Members | |
| Public Types inherited from QGraphicsEffect | |
| enum | ChangeFlag { SourceAttached = 0x1, SourceDetached = 0x2, SourceBoundingRectChanged = 0x4, SourceInvalidated = 0x8 } |
| This enum describes what has changed in QGraphicsEffectSource. More... | |
| enum | PixmapPadMode { NoPad, PadToTransparentBorder, PadToEffectiveBoundingRect } |
| This enum describes how the pixmap returned from sourcePixmap should be padded. More... | |
| 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 Variables inherited from QObject | |
| QScopedPointer< QObjectData > | 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 ®Exp)() |
| 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... | |
The QGraphicsColorizeEffect class provides a colorize effect.
A colorize effect renders the source with a tint of its color(). The color can be modified using the setColor() function.
By default, the color is light blue (QColor(0, 0, 192)).
Definition at line 130 of file qgraphicseffect.h.
| QGraphicsColorizeEffect::QGraphicsColorizeEffect | ( | QObject * | parent = 0 | ) |
Constructs a new QGraphicsColorizeEffect instance.
The parent parameter is passed to QGraphicsEffect's constructor.
Definition at line 634 of file qgraphicseffect.cpp.
| QGraphicsColorizeEffect::~QGraphicsColorizeEffect | ( | ) |
| QColor QGraphicsColorizeEffect::color | ( | ) | const |
Referenced by setColor(), and ~QGraphicsColorizeEffect().
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signal |
This signal is emitted whenever the effect's color changes.
The color parameter holds the effect's new color.
Referenced by setColor().
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protectedvirtual |
Reimplemented Function
Implements QGraphicsEffect.
Definition at line 722 of file qgraphicseffect.cpp.
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slot |
Definition at line 661 of file qgraphicseffect.cpp.
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slot |
Definition at line 688 of file qgraphicseffect.cpp.
| qreal QGraphicsColorizeEffect::strength | ( | ) | const |
Referenced by setColor(), and setStrength().
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signal |
This signal is emitted whenever setStrength() changes the colorize strength property.
strength contains the new strength value of the colorize effect.
Referenced by setStrength().
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private |
the color of the effect.
By default, the color is light blue (QColor(0, 0, 192)).
Definition at line 133 of file qgraphicseffect.h.
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private |
the strength of the effect.
By default, the strength is 1.0. A strength 0.0 equals to no effect, while 1.0 means full colorization.
Definition at line 134 of file qgraphicseffect.h.