QGraphicsDropShadowEffect Class▲
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Header: QGraphicsDropShadowEffect
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CMake:
find_package(Qt6 REQUIRED COMPONENTS Widgets)
target_link_libraries(mytarget PRIVATE Qt6::Widgets)
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qmake: QT += widgets
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Inherits: QGraphicsEffect
Detailed Description▲
A drop shadow effect renders the source with a drop shadow. The color of the drop shadow can be modified using the setColor() function. The drop shadow offset can be modified using the setOffset() function and the blur radius of the drop shadow can be changed with the setBlurRadius() function.
By default, the drop shadow is a semi-transparent dark gray (QColor(63, 63, 63, 180)) shadow, blurred with a radius of 1 at an offset of 8 pixels towards the lower right. The drop shadow offset is specified in device coordinates.
See Also▲
Property Documentation▲
blurRadius : qreal▲
This property holds the blur radius in pixels of the drop shadow.
Using a smaller radius results in a sharper shadow, whereas using a bigger radius results in a more blurred shadow.
By default, the blur radius is 1 pixel.
Access functions:
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qreal blurRadius() const
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void setBlurRadius(qreal blurRadius)
Notifier signal:
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void blurRadiusChanged(qreal blurRadius)
See Also▲
color : QColor▲
This property holds the color of the drop shadow.
By default, the drop color is a semi-transparent dark gray (QColor(63, 63, 63, 180)).
Access functions:
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color() const
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void setColor(const &color)
Notifier signal:
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void colorChanged(const &color)
See Also▲
See also offset(), blurRadius()
offset : QPointF▲
This property holds the shadow offset in pixels.
By default, the offset is 8 pixels towards the lower right.
The offset is given in device coordinates, which means it is unaffected by scale.
Access functions:
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offset() const
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void setOffset(const &ofs)
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void setOffset(qreal dx, qreal dy)
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void setOffset(qreal d)
Notifier signal:
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void offsetChanged(const &offset)
See Also▲
See also xOffset(), yOffset(), blurRadius(), color()
xOffset : qreal▲
This property holds the horizontal shadow offset in pixels.
By default, the horizontal shadow offset is 8 pixels.
Access functions:
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qreal xOffset() const
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void setXOffset(qreal dx)
Notifier signal:
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void offsetChanged(const &offset)
See Also▲
yOffset : qreal▲
This property holds the vertical shadow offset in pixels.
By default, the vertical shadow offset is 8 pixels.
Access functions:
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qreal yOffset() const
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void setYOffset(qreal dy)
Notifier signal:
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void offsetChanged(const &offset)
See Also▲
Member Function Documentation▲
QGraphicsDropShadowEffect::QGraphicsDropShadowEffect(QObject *parent = nullptr)▲
Constructs a new QGraphicsDropShadowEffect instance. The parent parameter is passed to QGraphicsEffect's constructor.
[virtual] QGraphicsDropShadowEffect::~QGraphicsDropShadowEffect()▲
Destroys the effect.
void QGraphicsDropShadowEffect::blurRadiusChanged(qreal blurRadius)▲
This signal is emitted whenever the effect's blur radius changes. The blurRadius parameter holds the effect's new blur radius.
Notifier signal for property blurRadius.
[override virtual] QRectF QGraphicsDropShadowEffect::boundingRectFor(const QRectF &rect) const▲
Reimplements: QGraphicsEffect::boundingRectFor(const QRectF &rect) const.
void QGraphicsDropShadowEffect::colorChanged(const QColor &color)▲
This signal is emitted whenever the effect's color changes. The color parameter holds the effect's new color.
Notifier signal for property color.
[override virtual protected] void QGraphicsDropShadowEffect::draw(QPainter *painter)▲
Reimplements: QGraphicsEffect::draw(QPainter *painter).