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| |
| #ifndef QGRAPHICSEFFECT_H |
| #define QGRAPHICSEFFECT_H |
| |
| #include <QtWidgets/qtwidgetsglobal.h> |
| #include <QtCore/qobject.h> |
| #include <QtCore/qpoint.h> |
| #include <QtCore/qrect.h> |
| #include <QtGui/qcolor.h> |
| #include <QtGui/qbrush.h> |
| |
| QT_REQUIRE_CONFIG(graphicseffect); |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QGraphicsItem; |
| class QStyleOption; |
| class QPainter; |
| class QPixmap; |
| |
| class QGraphicsEffectSource; |
| |
| class QGraphicsEffectPrivate; |
| class Q_WIDGETS_EXPORT QGraphicsEffect : public QObject |
| { |
| Q_OBJECT |
| Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged) |
| public: |
| enum ChangeFlag { |
| SourceAttached = 0x1, |
| SourceDetached = 0x2, |
| SourceBoundingRectChanged = 0x4, |
| SourceInvalidated = 0x8 |
| }; |
| Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag) |
| Q_FLAG(ChangeFlags) |
| |
| enum PixmapPadMode { |
| NoPad, |
| PadToTransparentBorder, |
| PadToEffectiveBoundingRect |
| }; |
| |
| QGraphicsEffect(QObject *parent = nullptr); |
| virtual ~QGraphicsEffect(); |
| |
| virtual QRectF boundingRectFor(const QRectF &sourceRect) const; |
| QRectF boundingRect() const; |
| |
| bool isEnabled() const; |
| |
| public Q_SLOTS: |
| void setEnabled(bool enable); |
| void update(); |
| |
| Q_SIGNALS: |
| void enabledChanged(bool enabled); |
| |
| protected: |
| QGraphicsEffect(QGraphicsEffectPrivate &d, QObject *parent = nullptr); |
| virtual void draw(QPainter *painter) = 0; |
| virtual void sourceChanged(ChangeFlags flags); |
| void updateBoundingRect(); |
| |
| bool sourceIsPixmap() const; |
| QRectF sourceBoundingRect(Qt::CoordinateSystem system = Qt::LogicalCoordinates) const; |
| void drawSource(QPainter *painter); |
| QPixmap sourcePixmap(Qt::CoordinateSystem system = Qt::LogicalCoordinates, |
| QPoint *offset = nullptr, |
| PixmapPadMode mode = PadToEffectiveBoundingRect) const; |
| |
| private: |
| Q_DECLARE_PRIVATE(QGraphicsEffect) |
| Q_DISABLE_COPY(QGraphicsEffect) |
| friend class QGraphicsItem; |
| friend class QGraphicsItemPrivate; |
| friend class QGraphicsScenePrivate; |
| friend class QWidget; |
| friend class QWidgetPrivate; |
| |
| public: |
| QGraphicsEffectSource *source() const; // internal |
| |
| }; |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsEffect::ChangeFlags) |
| |
| class QGraphicsColorizeEffectPrivate; |
| class Q_WIDGETS_EXPORT QGraphicsColorizeEffect: public QGraphicsEffect |
| { |
| Q_OBJECT |
| Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) |
| Q_PROPERTY(qreal strength READ strength WRITE setStrength NOTIFY strengthChanged) |
| public: |
| QGraphicsColorizeEffect(QObject *parent = nullptr); |
| ~QGraphicsColorizeEffect(); |
| |
| QColor color() const; |
| qreal strength() const; |
| |
| public Q_SLOTS: |
| void setColor(const QColor &c); |
| void setStrength(qreal strength); |
| |
| Q_SIGNALS: |
| void colorChanged(const QColor &color); |
| void strengthChanged(qreal strength); |
| |
| protected: |
| void draw(QPainter *painter) override; |
| |
| private: |
| Q_DECLARE_PRIVATE(QGraphicsColorizeEffect) |
| Q_DISABLE_COPY(QGraphicsColorizeEffect) |
| }; |
| |
| class QGraphicsBlurEffectPrivate; |
| class Q_WIDGETS_EXPORT QGraphicsBlurEffect: public QGraphicsEffect |
| { |
| Q_OBJECT |
| Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) |
| Q_PROPERTY(BlurHints blurHints READ blurHints WRITE setBlurHints NOTIFY blurHintsChanged) |
| public: |
| enum BlurHint { |
| PerformanceHint = 0x00, |
| QualityHint = 0x01, |
| AnimationHint = 0x02 |
| }; |
| Q_FLAG(BlurHint) |
| Q_DECLARE_FLAGS(BlurHints, BlurHint) |
| Q_FLAG(BlurHints) |
| |
| QGraphicsBlurEffect(QObject *parent = nullptr); |
| ~QGraphicsBlurEffect(); |
| |
| QRectF boundingRectFor(const QRectF &rect) const override; |
| qreal blurRadius() const; |
| BlurHints blurHints() const; |
| |
| public Q_SLOTS: |
| void setBlurRadius(qreal blurRadius); |
| void setBlurHints(BlurHints hints); |
| |
| Q_SIGNALS: |
| void blurRadiusChanged(qreal blurRadius); |
| void blurHintsChanged(BlurHints hints); |
| |
| protected: |
| void draw(QPainter *painter) override; |
| |
| private: |
| Q_DECLARE_PRIVATE(QGraphicsBlurEffect) |
| Q_DISABLE_COPY(QGraphicsBlurEffect) |
| }; |
| |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsBlurEffect::BlurHints) |
| |
| class QGraphicsDropShadowEffectPrivate; |
| class Q_WIDGETS_EXPORT QGraphicsDropShadowEffect: public QGraphicsEffect |
| { |
| Q_OBJECT |
| Q_PROPERTY(QPointF offset READ offset WRITE setOffset NOTIFY offsetChanged) |
| Q_PROPERTY(qreal xOffset READ xOffset WRITE setXOffset NOTIFY offsetChanged) |
| Q_PROPERTY(qreal yOffset READ yOffset WRITE setYOffset NOTIFY offsetChanged) |
| Q_PROPERTY(qreal blurRadius READ blurRadius WRITE setBlurRadius NOTIFY blurRadiusChanged) |
| Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged) |
| public: |
| QGraphicsDropShadowEffect(QObject *parent = nullptr); |
| ~QGraphicsDropShadowEffect(); |
| |
| QRectF boundingRectFor(const QRectF &rect) const override; |
| QPointF offset() const; |
| |
| inline qreal xOffset() const |
| { return offset().x(); } |
| |
| inline qreal yOffset() const |
| { return offset().y(); } |
| |
| qreal blurRadius() const; |
| QColor color() const; |
| |
| public Q_SLOTS: |
| void setOffset(const QPointF &ofs); |
| |
| inline void setOffset(qreal dx, qreal dy) |
| { setOffset(QPointF(dx, dy)); } |
| |
| inline void setOffset(qreal d) |
| { setOffset(QPointF(d, d)); } |
| |
| inline void setXOffset(qreal dx) |
| { setOffset(QPointF(dx, yOffset())); } |
| |
| inline void setYOffset(qreal dy) |
| { setOffset(QPointF(xOffset(), dy)); } |
| |
| void setBlurRadius(qreal blurRadius); |
| void setColor(const QColor &color); |
| |
| Q_SIGNALS: |
| void offsetChanged(const QPointF &offset); |
| void blurRadiusChanged(qreal blurRadius); |
| void colorChanged(const QColor &color); |
| |
| protected: |
| void draw(QPainter *painter) override; |
| |
| private: |
| Q_DECLARE_PRIVATE(QGraphicsDropShadowEffect) |
| Q_DISABLE_COPY(QGraphicsDropShadowEffect) |
| }; |
| |
| class QGraphicsOpacityEffectPrivate; |
| class Q_WIDGETS_EXPORT QGraphicsOpacityEffect: public QGraphicsEffect |
| { |
| Q_OBJECT |
| Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity NOTIFY opacityChanged) |
| Q_PROPERTY(QBrush opacityMask READ opacityMask WRITE setOpacityMask NOTIFY opacityMaskChanged) |
| public: |
| QGraphicsOpacityEffect(QObject *parent = nullptr); |
| ~QGraphicsOpacityEffect(); |
| |
| qreal opacity() const; |
| QBrush opacityMask() const; |
| |
| public Q_SLOTS: |
| void setOpacity(qreal opacity); |
| void setOpacityMask(const QBrush &mask); |
| |
| Q_SIGNALS: |
| void opacityChanged(qreal opacity); |
| void opacityMaskChanged(const QBrush &mask); |
| |
| protected: |
| void draw(QPainter *painter) override; |
| |
| private: |
| Q_DECLARE_PRIVATE(QGraphicsOpacityEffect) |
| Q_DISABLE_COPY(QGraphicsOpacityEffect) |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QGRAPHICSEFFECT_H |
| |