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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtQuick module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ****************************************************************************/ |
| |
| #ifndef QQUICKITEMVIEW_P_H |
| #define QQUICKITEMVIEW_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 <QtQuick/private/qtquickglobal_p.h> |
| |
| QT_REQUIRE_CONFIG(quick_itemview); |
| |
| #include "qquickflickable_p.h" |
| #include <qpointer.h> |
| #include <QtCore/QLoggingCategory> |
| |
| QT_BEGIN_NAMESPACE |
| |
| Q_DECLARE_LOGGING_CATEGORY(lcItemViewDelegateLifecycle) |
| |
| class QQmlChangeSet; |
| |
| class QQuickItemViewPrivate; |
| |
| class Q_QUICK_PRIVATE_EXPORT QQuickItemView : public QQuickFlickable |
| { |
| Q_OBJECT |
| |
| Q_PROPERTY(QVariant model READ model WRITE setModel NOTIFY modelChanged) |
| Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged) |
| Q_PROPERTY(int count READ count NOTIFY countChanged) |
| |
| Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged) |
| Q_PROPERTY(QQuickItem *currentItem READ currentItem NOTIFY currentItemChanged) |
| |
| Q_PROPERTY(bool keyNavigationWraps READ isWrapEnabled WRITE setWrapEnabled NOTIFY keyNavigationWrapsChanged) |
| Q_PROPERTY(bool keyNavigationEnabled READ isKeyNavigationEnabled WRITE setKeyNavigationEnabled NOTIFY keyNavigationEnabledChanged REVISION 7) |
| Q_PROPERTY(int cacheBuffer READ cacheBuffer WRITE setCacheBuffer NOTIFY cacheBufferChanged) |
| Q_PROPERTY(int displayMarginBeginning READ displayMarginBeginning WRITE setDisplayMarginBeginning NOTIFY displayMarginBeginningChanged REVISION 3) |
| Q_PROPERTY(int displayMarginEnd READ displayMarginEnd WRITE setDisplayMarginEnd NOTIFY displayMarginEndChanged REVISION 3) |
| |
| Q_PROPERTY(Qt::LayoutDirection layoutDirection READ layoutDirection WRITE setLayoutDirection NOTIFY layoutDirectionChanged) |
| Q_PROPERTY(Qt::LayoutDirection effectiveLayoutDirection READ effectiveLayoutDirection NOTIFY effectiveLayoutDirectionChanged) |
| Q_PROPERTY(VerticalLayoutDirection verticalLayoutDirection READ verticalLayoutDirection WRITE setVerticalLayoutDirection NOTIFY verticalLayoutDirectionChanged) |
| |
| Q_PROPERTY(QQmlComponent *header READ header WRITE setHeader NOTIFY headerChanged) |
| Q_PROPERTY(QQuickItem *headerItem READ headerItem NOTIFY headerItemChanged) |
| Q_PROPERTY(QQmlComponent *footer READ footer WRITE setFooter NOTIFY footerChanged) |
| Q_PROPERTY(QQuickItem *footerItem READ footerItem NOTIFY footerItemChanged) |
| |
| Q_PROPERTY(QQuickTransition *populate READ populateTransition WRITE setPopulateTransition NOTIFY populateTransitionChanged) |
| Q_PROPERTY(QQuickTransition *add READ addTransition WRITE setAddTransition NOTIFY addTransitionChanged) |
| Q_PROPERTY(QQuickTransition *addDisplaced READ addDisplacedTransition WRITE setAddDisplacedTransition NOTIFY addDisplacedTransitionChanged) |
| Q_PROPERTY(QQuickTransition *move READ moveTransition WRITE setMoveTransition NOTIFY moveTransitionChanged) |
| Q_PROPERTY(QQuickTransition *moveDisplaced READ moveDisplacedTransition WRITE setMoveDisplacedTransition NOTIFY moveDisplacedTransitionChanged) |
| Q_PROPERTY(QQuickTransition *remove READ removeTransition WRITE setRemoveTransition NOTIFY removeTransitionChanged) |
| Q_PROPERTY(QQuickTransition *removeDisplaced READ removeDisplacedTransition WRITE setRemoveDisplacedTransition NOTIFY removeDisplacedTransitionChanged) |
| Q_PROPERTY(QQuickTransition *displaced READ displacedTransition WRITE setDisplacedTransition NOTIFY displacedTransitionChanged) |
| |
| Q_PROPERTY(QQmlComponent *highlight READ highlight WRITE setHighlight NOTIFY highlightChanged) |
| Q_PROPERTY(QQuickItem *highlightItem READ highlightItem NOTIFY highlightItemChanged) |
| Q_PROPERTY(bool highlightFollowsCurrentItem READ highlightFollowsCurrentItem WRITE setHighlightFollowsCurrentItem NOTIFY highlightFollowsCurrentItemChanged) |
| Q_PROPERTY(HighlightRangeMode highlightRangeMode READ highlightRangeMode WRITE setHighlightRangeMode NOTIFY highlightRangeModeChanged) |
| Q_PROPERTY(qreal preferredHighlightBegin READ preferredHighlightBegin WRITE setPreferredHighlightBegin NOTIFY preferredHighlightBeginChanged RESET resetPreferredHighlightBegin) |
| Q_PROPERTY(qreal preferredHighlightEnd READ preferredHighlightEnd WRITE setPreferredHighlightEnd NOTIFY preferredHighlightEndChanged RESET resetPreferredHighlightEnd) |
| Q_PROPERTY(int highlightMoveDuration READ highlightMoveDuration WRITE setHighlightMoveDuration NOTIFY highlightMoveDurationChanged) |
| |
| public: |
| // this holds all layout enum values so they can be referred to by other enums |
| // to ensure consistent values - e.g. QML references to GridView.TopToBottom flow |
| // and GridView.TopToBottom vertical layout direction should have same value |
| enum LayoutDirection { |
| LeftToRight = Qt::LeftToRight, |
| RightToLeft = Qt::RightToLeft, |
| VerticalTopToBottom, |
| VerticalBottomToTop |
| }; |
| Q_ENUM(LayoutDirection) |
| |
| enum VerticalLayoutDirection { |
| TopToBottom = VerticalTopToBottom, |
| BottomToTop = VerticalBottomToTop |
| }; |
| Q_ENUM(VerticalLayoutDirection) |
| |
| QQuickItemView(QQuickFlickablePrivate &dd, QQuickItem *parent = nullptr); |
| ~QQuickItemView(); |
| |
| QVariant model() const; |
| void setModel(const QVariant &); |
| |
| QQmlComponent *delegate() const; |
| void setDelegate(QQmlComponent *); |
| |
| int count() const; |
| |
| int currentIndex() const; |
| void setCurrentIndex(int idx); |
| |
| QQuickItem *currentItem() const; |
| |
| bool isWrapEnabled() const; |
| void setWrapEnabled(bool); |
| |
| bool isKeyNavigationEnabled() const; |
| void setKeyNavigationEnabled(bool); |
| |
| int cacheBuffer() const; |
| void setCacheBuffer(int); |
| |
| int displayMarginBeginning() const; |
| void setDisplayMarginBeginning(int); |
| |
| int displayMarginEnd() const; |
| void setDisplayMarginEnd(int); |
| |
| Qt::LayoutDirection layoutDirection() const; |
| void setLayoutDirection(Qt::LayoutDirection); |
| Qt::LayoutDirection effectiveLayoutDirection() const; |
| |
| VerticalLayoutDirection verticalLayoutDirection() const; |
| void setVerticalLayoutDirection(VerticalLayoutDirection layoutDirection); |
| |
| QQmlComponent *footer() const; |
| void setFooter(QQmlComponent *); |
| QQuickItem *footerItem() const; |
| |
| QQmlComponent *header() const; |
| void setHeader(QQmlComponent *); |
| QQuickItem *headerItem() const; |
| |
| QQuickTransition *populateTransition() const; |
| void setPopulateTransition(QQuickTransition *transition); |
| |
| QQuickTransition *addTransition() const; |
| void setAddTransition(QQuickTransition *transition); |
| |
| QQuickTransition *addDisplacedTransition() const; |
| void setAddDisplacedTransition(QQuickTransition *transition); |
| |
| QQuickTransition *moveTransition() const; |
| void setMoveTransition(QQuickTransition *transition); |
| |
| QQuickTransition *moveDisplacedTransition() const; |
| void setMoveDisplacedTransition(QQuickTransition *transition); |
| |
| QQuickTransition *removeTransition() const; |
| void setRemoveTransition(QQuickTransition *transition); |
| |
| QQuickTransition *removeDisplacedTransition() const; |
| void setRemoveDisplacedTransition(QQuickTransition *transition); |
| |
| QQuickTransition *displacedTransition() const; |
| void setDisplacedTransition(QQuickTransition *transition); |
| |
| QQmlComponent *highlight() const; |
| void setHighlight(QQmlComponent *); |
| |
| QQuickItem *highlightItem() const; |
| |
| bool highlightFollowsCurrentItem() const; |
| virtual void setHighlightFollowsCurrentItem(bool); |
| |
| enum HighlightRangeMode { NoHighlightRange, ApplyRange, StrictlyEnforceRange }; |
| Q_ENUM(HighlightRangeMode) |
| HighlightRangeMode highlightRangeMode() const; |
| void setHighlightRangeMode(HighlightRangeMode mode); |
| |
| qreal preferredHighlightBegin() const; |
| void setPreferredHighlightBegin(qreal); |
| void resetPreferredHighlightBegin(); |
| |
| qreal preferredHighlightEnd() const; |
| void setPreferredHighlightEnd(qreal); |
| void resetPreferredHighlightEnd(); |
| |
| int highlightMoveDuration() const; |
| virtual void setHighlightMoveDuration(int); |
| |
| enum PositionMode { Beginning, Center, End, Visible, Contain, SnapPosition }; |
| Q_ENUM(PositionMode) |
| |
| Q_INVOKABLE void positionViewAtIndex(int index, int mode); |
| Q_INVOKABLE int indexAt(qreal x, qreal y) const; |
| Q_INVOKABLE QQuickItem *itemAt(qreal x, qreal y) const; |
| Q_REVISION(13) Q_INVOKABLE QQuickItem *itemAtIndex(int index) const; |
| Q_INVOKABLE void positionViewAtBeginning(); |
| Q_INVOKABLE void positionViewAtEnd(); |
| Q_REVISION(1) Q_INVOKABLE void forceLayout(); |
| |
| void setContentX(qreal pos) override; |
| void setContentY(qreal pos) override; |
| qreal originX() const override; |
| qreal originY() const override; |
| |
| Q_SIGNALS: |
| void modelChanged(); |
| void delegateChanged(); |
| void countChanged(); |
| void currentIndexChanged(); |
| void currentItemChanged(); |
| |
| void keyNavigationWrapsChanged(); |
| Q_REVISION(7) void keyNavigationEnabledChanged(); |
| void cacheBufferChanged(); |
| void displayMarginBeginningChanged(); |
| void displayMarginEndChanged(); |
| |
| void layoutDirectionChanged(); |
| void effectiveLayoutDirectionChanged(); |
| void verticalLayoutDirectionChanged(); |
| |
| void headerChanged(); |
| void footerChanged(); |
| void headerItemChanged(); |
| void footerItemChanged(); |
| |
| void populateTransitionChanged(); |
| void addTransitionChanged(); |
| void addDisplacedTransitionChanged(); |
| void moveTransitionChanged(); |
| void moveDisplacedTransitionChanged(); |
| void removeTransitionChanged(); |
| void removeDisplacedTransitionChanged(); |
| void displacedTransitionChanged(); |
| |
| void highlightChanged(); |
| void highlightItemChanged(); |
| void highlightFollowsCurrentItemChanged(); |
| void highlightRangeModeChanged(); |
| void preferredHighlightBeginChanged(); |
| void preferredHighlightEndChanged(); |
| void highlightMoveDurationChanged(); |
| |
| protected: |
| void updatePolish() override; |
| void componentComplete() override; |
| void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override; |
| qreal minYExtent() const override; |
| qreal maxYExtent() const override; |
| qreal minXExtent() const override; |
| qreal maxXExtent() const override; |
| |
| protected Q_SLOTS: |
| void destroyRemoved(); |
| void createdItem(int index, QObject *item); |
| virtual void initItem(int index, QObject *item); |
| void modelUpdated(const QQmlChangeSet &changeSet, bool reset); |
| void destroyingItem(QObject *item); |
| void animStopped(); |
| void trackedPositionChanged(); |
| |
| private: |
| Q_DECLARE_PRIVATE(QQuickItemView) |
| }; |
| |
| |
| class Q_QUICK_PRIVATE_EXPORT QQuickItemViewAttached : public QObject |
| { |
| Q_OBJECT |
| |
| Q_PROPERTY(QQuickItemView *view READ view NOTIFY viewChanged) |
| Q_PROPERTY(bool isCurrentItem READ isCurrentItem NOTIFY currentItemChanged) |
| Q_PROPERTY(bool delayRemove READ delayRemove WRITE setDelayRemove NOTIFY delayRemoveChanged) |
| |
| Q_PROPERTY(QString section READ section NOTIFY sectionChanged) |
| Q_PROPERTY(QString previousSection READ prevSection NOTIFY prevSectionChanged) |
| Q_PROPERTY(QString nextSection READ nextSection NOTIFY nextSectionChanged) |
| |
| public: |
| QQuickItemViewAttached(QObject *parent) |
| : QObject(parent), m_isCurrent(false), m_delayRemove(false) {} |
| ~QQuickItemViewAttached() {} |
| |
| QQuickItemView *view() const { return m_view; } |
| void setView(QQuickItemView *view) { |
| if (view != m_view) { |
| m_view = view; |
| Q_EMIT viewChanged(); |
| } |
| } |
| |
| bool isCurrentItem() const { return m_isCurrent; } |
| void setIsCurrentItem(bool c) { |
| if (m_isCurrent != c) { |
| m_isCurrent = c; |
| Q_EMIT currentItemChanged(); |
| } |
| } |
| |
| bool delayRemove() const { return m_delayRemove; } |
| void setDelayRemove(bool delay) { |
| if (m_delayRemove != delay) { |
| m_delayRemove = delay; |
| Q_EMIT delayRemoveChanged(); |
| } |
| } |
| |
| QString section() const { return m_section; } |
| void setSection(const QString §) { |
| if (m_section != sect) { |
| m_section = sect; |
| Q_EMIT sectionChanged(); |
| } |
| } |
| |
| QString prevSection() const { return m_prevSection; } |
| void setPrevSection(const QString §) { |
| if (m_prevSection != sect) { |
| m_prevSection = sect; |
| Q_EMIT prevSectionChanged(); |
| } |
| } |
| |
| QString nextSection() const { return m_nextSection; } |
| void setNextSection(const QString §) { |
| if (m_nextSection != sect) { |
| m_nextSection = sect; |
| Q_EMIT nextSectionChanged(); |
| } |
| } |
| |
| void setSections(const QString &prev, const QString §, const QString &next) { |
| bool prevChanged = prev != m_prevSection; |
| bool sectChanged = sect != m_section; |
| bool nextChanged = next != m_nextSection; |
| m_prevSection = prev; |
| m_section = sect; |
| m_nextSection = next; |
| if (prevChanged) |
| Q_EMIT prevSectionChanged(); |
| if (sectChanged) |
| Q_EMIT sectionChanged(); |
| if (nextChanged) |
| Q_EMIT nextSectionChanged(); |
| } |
| |
| void emitAdd() { Q_EMIT add(); } |
| void emitRemove() { Q_EMIT remove(); } |
| |
| Q_SIGNALS: |
| void viewChanged(); |
| void currentItemChanged(); |
| void delayRemoveChanged(); |
| |
| void add(); |
| void remove(); |
| |
| void sectionChanged(); |
| void prevSectionChanged(); |
| void nextSectionChanged(); |
| |
| public: |
| QPointer<QQuickItemView> m_view; |
| bool m_isCurrent : 1; |
| bool m_delayRemove : 1; |
| |
| // current only used by list view |
| mutable QString m_section; |
| QString m_prevSection; |
| QString m_nextSection; |
| }; |
| |
| |
| QT_END_NAMESPACE |
| |
| #endif // QQUICKITEMVIEW_P_H |
| |