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| ** This file is part of the QtQuick module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef QQUICKITEMCHANGELISTENER_P_H |
| #define QQUICKITEMCHANGELISTENER_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtCore/qglobal.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QRectF; |
| class QQuickItem; |
| class QQuickAnchorsPrivate; |
| |
| class QQuickGeometryChange |
| { |
| public: |
| enum Kind: int { |
| Nothing = 0x00, |
| X = 0x01, |
| Y = 0x02, |
| Width = 0x04, |
| Height = 0x08, |
| |
| Size = Width | Height, |
| All = X | Y | Size |
| }; |
| |
| QQuickGeometryChange(int change = Nothing) |
| : kind(change) |
| {} |
| |
| bool noChange() const { return kind == Nothing; } |
| bool anyChange() const { return !noChange(); } |
| |
| bool xChange() const { return kind & X; } |
| bool yChange() const { return kind & Y; } |
| bool widthChange() const { return kind & Width; } |
| bool heightChange() const { return kind & Height; } |
| |
| bool positionChange() const { return xChange() || yChange(); } |
| bool sizeChange() const { return widthChange() || heightChange(); } |
| |
| bool horizontalChange() const { return xChange() || widthChange(); } |
| bool verticalChange() const { return yChange() || heightChange(); } |
| |
| void setXChange(bool enabled) { set(X, enabled); } |
| void setYChange(bool enabled) { set(Y, enabled); } |
| void setWidthChange(bool enabled) { set(Width, enabled); } |
| void setHeightChange(bool enabled) { set(Height, enabled); } |
| void setSizeChange(bool enabled) { set(Size, enabled); } |
| void setAllChanged(bool enabled) { set(All, enabled); } |
| void setHorizontalChange(bool enabled) { set(X | Width, enabled); } |
| void setVerticalChange(bool enabled) { set(Y | Height, enabled); } |
| |
| void set(int bits, bool enabled) |
| { |
| if (enabled) { |
| kind |= bits; |
| } else { |
| kind &= ~bits; |
| } |
| } |
| |
| bool matches(QQuickGeometryChange other) const { return kind & other.kind; } |
| |
| private: |
| int kind; |
| }; |
| |
| #define QT_QUICK_NEW_GEOMETRY_CHANGED_HANDLING |
| |
| class QQuickItemChangeListener |
| { |
| public: |
| virtual ~QQuickItemChangeListener() {} |
| |
| virtual void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF & /* oldGeometry */) {} |
| virtual void itemSiblingOrderChanged(QQuickItem *) {} |
| virtual void itemVisibilityChanged(QQuickItem *) {} |
| virtual void itemEnabledChanged(QQuickItem *) {} |
| virtual void itemOpacityChanged(QQuickItem *) {} |
| virtual void itemDestroyed(QQuickItem *) {} |
| virtual void itemChildAdded(QQuickItem *, QQuickItem * /* child */ ) {} |
| virtual void itemChildRemoved(QQuickItem *, QQuickItem * /* child */ ) {} |
| virtual void itemParentChanged(QQuickItem *, QQuickItem * /* parent */ ) {} |
| virtual void itemRotationChanged(QQuickItem *) {} |
| virtual void itemImplicitWidthChanged(QQuickItem *) {} |
| virtual void itemImplicitHeightChanged(QQuickItem *) {} |
| |
| virtual QQuickAnchorsPrivate *anchorPrivate() { return nullptr; } |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QQUICKITEMCHANGELISTENER_P_H |