src/quick/items/qquickitem_p.h

   1 // Commit: 5c783d0a9a912816813945387903857a314040b5
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  42
  43 #ifndef QQUICKITEM_P_H
  44 #define QQUICKITEM_P_H
  45
  46 //
  47 //  W A R N I N G
  48 //  -------------
  49 //
  50 // This file is not part of the Qt API.  It exists purely as an
  51 // implementation detail.  This header file may change from version to
  52 // version without notice, or even be removed.
  53 //
  54 // We mean it.
  55 //
  56
  57 #include "qquickitem.h"
  58
  59 #include "qquickanchors_p.h"
  60 #include "qquickanchors_p_p.h"
  61 #include "qquickitemchangelistener_p.h"
  62
  63 #include "qquickcanvas_p.h"
  64
  65 #include <QtQuick/qsgnode.h>
  66 #include "qquickclipnode_p.h"
  67
  68 #include <private/qpodvector_p.h>
  69 #include <QtQuick/private/qdeclarativestate_p.h>
  70 #include <private/qdeclarativenullablevalue_p_p.h>
  71 #include <private/qdeclarativenotifier_p.h>
  72 #include <private/qdeclarativeglobal_p.h>
  73
  74 #include <qdeclarative.h>
  75 #include <qdeclarativecontext.h>
  76
  77 #include <QtCore/qlist.h>
  78 #include <QtCore/qdebug.h>
  79 #include <QtCore/qelapsedtimer.h>
  80
  81 #include <QtQuick/private/qquickshadereffectsource_p.h>
  82 #include <QtQuick/private/qquickshadereffect_p.h>
  83
  84 QT_BEGIN_NAMESPACE
  85
  86 class QNetworkReply;
  87 class QQuickItemKeyFilter;
  88 class QQuickLayoutMirroringAttached;
  89 class QQuickScreenAttached;
  90
  91 class QQuickContents : public QQuickItemChangeListener
  92 {
  93 public:
  94     QQuickContents(QQuickItem *item);
  95     ~QQuickContents();
  96
  97     QRectF rectF() const { return QRectF(m_x, m_y, m_width, m_height); }
  98
  99     inline void calcGeometry(QQuickItem *changed = 0);
 100     void complete();
 101
 102 protected:
 103     void itemGeometryChanged(QQuickItem *item, const QRectF &newGeometry, const QRectF &oldGeometry);
 104     void itemDestroyed(QQuickItem *item);
 105     void itemChildAdded(QQuickItem *, QQuickItem *);
 106     void itemChildRemoved(QQuickItem *, QQuickItem *);
 107     //void itemVisibilityChanged(QQuickItem *item)
 108
 109 private:
 110     bool calcHeight(QQuickItem *changed = 0);
 111     bool calcWidth(QQuickItem *changed = 0);
 112     void updateRect();
 113
 114     QQuickItem *m_item;
 115     qreal m_x;
 116     qreal m_y;
 117     qreal m_width;
 118     qreal m_height;
 119 };
 120
 121 void QQuickContents::calcGeometry(QQuickItem *changed)
 122 {
 123     bool wChanged = calcWidth(changed);
 124     bool hChanged = calcHeight(changed);
 125     if (wChanged || hChanged)
 126         updateRect();
 127 }
 128
 129 class QQuickTransformPrivate : public QObjectPrivate
 130 {
 131     Q_DECLARE_PUBLIC(QQuickTransform);
 132 public:
 133     static QQuickTransformPrivate* get(QQuickTransform *transform) { return transform->d_func(); }
 134
 135     QQuickTransformPrivate();
 136
 137     QList<QQuickItem *> items;
 138 };
 139
 140
 141 class QQuickItemLayer : public QObject, public QQuickItemChangeListener
 142 {
 143     Q_OBJECT
 144     Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
 145     Q_PROPERTY(QSize textureSize READ size WRITE setSize NOTIFY sizeChanged)
 146     Q_PROPERTY(QRectF sourceRect READ sourceRect WRITE setSourceRect NOTIFY sourceRectChanged)
 147     Q_PROPERTY(bool mipmap READ mipmap WRITE setMipmap NOTIFY mipmapChanged)
 148     Q_PROPERTY(bool smooth READ smooth WRITE setSmooth NOTIFY smoothChanged)
 149     Q_PROPERTY(QQuickShaderEffectSource::WrapMode wrapMode READ wrapMode WRITE setWrapMode NOTIFY wrapModeChanged)
 150     Q_PROPERTY(QQuickShaderEffectSource::Format format READ format WRITE setFormat NOTIFY formatChanged)
 151     Q_PROPERTY(QByteArray samplerName READ name WRITE setName NOTIFY nameChanged)
 152     Q_PROPERTY(QDeclarativeComponent *effect READ effect WRITE setEffect NOTIFY effectChanged)
 153 public:
 154     QQuickItemLayer(QQuickItem *item);
 155     ~QQuickItemLayer();
 156
 157     void classBegin();
 158     void componentComplete();
 159
 160     bool enabled() const { return m_enabled; }
 161     void setEnabled(bool enabled);
 162
 163     bool mipmap() const { return m_mipmap; }
 164     void setMipmap(bool mipmap);
 165
 166     bool smooth() const { return m_smooth; }
 167     void setSmooth(bool s);
 168
 169     QSize size() const { return m_size; }
 170     void setSize(const QSize &size);
 171
 172     QQuickShaderEffectSource::Format format() const { return m_format; }
 173     void setFormat(QQuickShaderEffectSource::Format f);
 174
 175     QRectF sourceRect() const { return m_sourceRect; }
 176     void setSourceRect(const QRectF &sourceRect);
 177
 178     QQuickShaderEffectSource::WrapMode wrapMode() const { return m_wrapMode; }
 179     void setWrapMode(QQuickShaderEffectSource::WrapMode mode);
 180
 181     QByteArray name() const { return m_name; }
 182     void setName(const QByteArray &name);
 183
 184     QDeclarativeComponent *effect() const { return m_effectComponent; }
 185     void setEffect(QDeclarativeComponent *effect);
 186
 187     QQuickShaderEffectSource *effectSource() const { return m_effectSource; }
 188
 189     void itemGeometryChanged(QQuickItem *, const QRectF &, const QRectF &);
 190     void itemOpacityChanged(QQuickItem *);
 191     void itemParentChanged(QQuickItem *, QQuickItem *);
 192     void itemSiblingOrderChanged(QQuickItem *);
 193     void itemVisibilityChanged(QQuickItem *);
 194
 195     void updateMatrix();
 196     void updateGeometry();
 197     void updateOpacity();
 198     void updateZ();
 199
 200 signals:
 201     void enabledChanged(bool enabled);
 202     void sizeChanged(const QSize &size);
 203     void mipmapChanged(bool mipmap);
 204     void wrapModeChanged(QQuickShaderEffectSource::WrapMode mode);
 205     void nameChanged(const QByteArray &name);
 206     void effectChanged(QDeclarativeComponent *component);
 207     void smoothChanged(bool smooth);
 208     void formatChanged(QQuickShaderEffectSource::Format format);
 209     void sourceRectChanged(const QRectF &sourceRect);
 210
 211 private:
 212     void activate();
 213     void deactivate();
 214     void activateEffect();
 215     void deactivateEffect();
 216
 217     QQuickItem *m_item;
 218     bool m_enabled;
 219     bool m_mipmap;
 220     bool m_smooth;
 221     bool m_componentComplete;
 222     QQuickShaderEffectSource::WrapMode m_wrapMode;
 223     QQuickShaderEffectSource::Format m_format;
 224     QSize m_size;
 225     QRectF m_sourceRect;
 226     QByteArray m_name;
 227     QDeclarativeComponent *m_effectComponent;
 228     QQuickItem *m_effect;
 229     QQuickShaderEffectSource *m_effectSource;
 230 };
 231
 232 class Q_QUICK_EXPORT QQuickItemPrivate : public QObjectPrivate
 233 {
 234     Q_DECLARE_PUBLIC(QQuickItem)
 235
 236 public:
 237     static QQuickItemPrivate* get(QQuickItem *item) { return item->d_func(); }
 238     static const QQuickItemPrivate* get(const QQuickItem *item) { return item->d_func(); }
 239
 240     static void registerAccessorProperties();
 241
 242     QQuickItemPrivate();
 243     ~QQuickItemPrivate();
 244     void init(QQuickItem *parent);
 245
 246     QDeclarativeListProperty<QObject> data();
 247     QDeclarativeListProperty<QObject> resources();
 248     QDeclarativeListProperty<QQuickItem> children();
 249
 250     QDeclarativeListProperty<QDeclarativeState> states();
 251     QDeclarativeListProperty<QDeclarativeTransition> transitions();
 252
 253     QString state() const;
 254     void setState(const QString &);
 255
 256     QQuickAnchorLine left() const;
 257     QQuickAnchorLine right() const;
 258     QQuickAnchorLine horizontalCenter() const;
 259     QQuickAnchorLine top() const;
 260     QQuickAnchorLine bottom() const;
 261     QQuickAnchorLine verticalCenter() const;
 262     QQuickAnchorLine baseline() const;
 263
 264     QQuickItemLayer *layer() const;
 265
 266     // data property
 267     static void data_append(QDeclarativeListProperty<QObject> *, QObject *);
 268     static int data_count(QDeclarativeListProperty<QObject> *);
 269     static QObject *data_at(QDeclarativeListProperty<QObject> *, int);
 270     static void data_clear(QDeclarativeListProperty<QObject> *);
 271
 272     // resources property
 273     static QObject *resources_at(QDeclarativeListProperty<QObject> *, int);
 274     static void resources_append(QDeclarativeListProperty<QObject> *, QObject *);
 275     static int resources_count(QDeclarativeListProperty<QObject> *);
 276     static void resources_clear(QDeclarativeListProperty<QObject> *);
 277
 278     // children property
 279     static void children_append(QDeclarativeListProperty<QQuickItem> *, QQuickItem *);
 280     static int children_count(QDeclarativeListProperty<QQuickItem> *);
 281     static QQuickItem *children_at(QDeclarativeListProperty<QQuickItem> *, int);
 282     static void children_clear(QDeclarativeListProperty<QQuickItem> *);
 283
 284     // transform property
 285     static int transform_count(QDeclarativeListProperty<QQuickTransform> *list);
 286     static void transform_append(QDeclarativeListProperty<QQuickTransform> *list, QQuickTransform *);
 287     static QQuickTransform *transform_at(QDeclarativeListProperty<QQuickTransform> *list, int);
 288     static void transform_clear(QDeclarativeListProperty<QQuickTransform> *list);
 289
 290     QQuickAnchors *anchors() const;
 291     mutable QQuickAnchors *_anchors;
 292     QQuickContents *_contents;
 293
 294     QDeclarativeNullableValue<qreal> baselineOffset;
 295
 296     struct AnchorLines {
 297         AnchorLines(QQuickItem *);
 298         QQuickAnchorLine left;
 299         QQuickAnchorLine right;
 300         QQuickAnchorLine hCenter;
 301         QQuickAnchorLine top;
 302         QQuickAnchorLine bottom;
 303         QQuickAnchorLine vCenter;
 304         QQuickAnchorLine baseline;
 305     };
 306     mutable AnchorLines *_anchorLines;
 307     AnchorLines *anchorLines() const;
 308
 309     enum ChangeType {
 310         Geometry = 0x01,
 311         SiblingOrder = 0x02,
 312         Visibility = 0x04,
 313         Opacity = 0x08,
 314         Destroyed = 0x10,
 315         Parent = 0x20,
 316         Children = 0x40,
 317         Rotation = 0x80,
 318     };
 319
 320     Q_DECLARE_FLAGS(ChangeTypes, ChangeType)
 321
 322     enum GeometryChangeType {
 323         NoChange = 0,
 324         XChange = 0x01,
 325         YChange = 0x02,
 326         WidthChange = 0x04,
 327         HeightChange = 0x08,
 328         SizeChange = WidthChange | HeightChange,
 329         GeometryChange = XChange | YChange | SizeChange
 330     };
 331
 332     Q_DECLARE_FLAGS(GeometryChangeTypes, GeometryChangeType)
 333
 334     struct ChangeListener {
 335         ChangeListener(QQuickItemChangeListener *l, QQuickItemPrivate::ChangeTypes t) : listener(l), types(t), gTypes(GeometryChange) {}
 336         ChangeListener(QQuickItemChangeListener *l, QQuickItemPrivate::GeometryChangeTypes gt) : listener(l), types(Geometry), gTypes(gt) {}
 337         QQuickItemChangeListener *listener;
 338         QQuickItemPrivate::ChangeTypes types;
 339         QQuickItemPrivate::GeometryChangeTypes gTypes;  //NOTE: not used for ==
 340         bool operator==(const ChangeListener &other) const { return listener == other.listener && types == other.types; }
 341     };
 342
 343     void addItemChangeListener(QQuickItemChangeListener *listener, ChangeTypes types) {
 344         changeListeners.append(ChangeListener(listener, types));
 345     }
 346     void removeItemChangeListener(QQuickItemChangeListener *, ChangeTypes types);
 347     void updateOrAddGeometryChangeListener(QQuickItemChangeListener *listener, GeometryChangeTypes types);
 348     void updateOrRemoveGeometryChangeListener(QQuickItemChangeListener *listener, GeometryChangeTypes types);
 349     QPODVector<ChangeListener,4> changeListeners;
 350
 351     QDeclarativeStateGroup *_states();
 352     QDeclarativeStateGroup *_stateGroup;
 353
 354     QQuickItem::TransformOrigin origin:5;
 355     quint32 flags:5;
 356     bool widthValid:1;
 357     bool heightValid:1;
 358     bool componentComplete:1;
 359     bool keepMouse:1;
 360     bool keepTouch:1;
 361     bool hoverEnabled:1;
 362     bool smooth:1;
 363     bool focus:1;
 364     bool activeFocus:1;
 365     bool notifiedFocus:1;
 366     bool notifiedActiveFocus:1;
 367     bool filtersChildMouseEvents:1;
 368     bool explicitVisible:1;
 369     bool effectiveVisible:1;
 370     bool explicitEnable:1;
 371     bool effectiveEnable:1;
 372     bool polishScheduled:1;
 373     bool inheritedLayoutMirror:1;
 374     bool effectiveLayoutMirror:1;
 375     bool isMirrorImplicit:1;
 376     bool inheritMirrorFromParent:1;
 377     bool inheritMirrorFromItem:1;
 378     bool childrenDoNotOverlap:1;
 379     bool staticSubtreeGeometry:1;
 380     bool isAccessible:1;
 381
 382     QQuickCanvas *canvas;
 383     QSGContext *sceneGraphContext() const { Q_ASSERT(canvas); return static_cast<QQuickCanvasPrivate *>(QObjectPrivate::get(canvas))->context; }
 384
 385     QQuickItem *parentItem;
 386     QDeclarativeNotifier parentNotifier;
 387
 388     QList<QQuickItem *> childItems;
 389     mutable QList<QQuickItem *> *sortedChildItems;
 390     QList<QQuickItem *> paintOrderChildItems() const;
 391     void addChild(QQuickItem *);
 392     void removeChild(QQuickItem *);
 393     void siblingOrderChanged();
 394
 395     inline void markSortedChildrenDirty(QQuickItem *child) {
 396         // If sortedChildItems == &childItems then all in childItems have z == 0
 397         // and we don't need to invalidate if the changed item also has z == 0.
 398         if (child->z() != 0. || sortedChildItems != &childItems) {
 399             if (sortedChildItems != &childItems)
 400                 delete sortedChildItems;
 401             sortedChildItems = 0;
 402         }
 403     }
 404
 405     class InitializationState {
 406     public:
 407         QQuickItem *getFocusScope(QQuickItem *item);
 408         void clear();
 409         void clear(QQuickItem *focusScope);
 410     private:
 411         QQuickItem *focusScope;
 412     };
 413     void initCanvas(InitializationState *, QQuickCanvas *);
 414
 415     QQuickItem *subFocusItem;
 416
 417     QTransform canvasToItemTransform() const;
 418     QTransform itemToCanvasTransform() const;
 419     void itemToParentTransform(QTransform &) const;
 420
 421     qreal x;
 422     qreal y;
 423     qreal width;
 424     qreal height;
 425     qreal implicitWidth;
 426     qreal implicitHeight;
 427
 428     qreal z;
 429     qreal scale;
 430     qreal rotation;
 431     qreal opacity;
 432
 433     QQuickLayoutMirroringAttached* attachedLayoutDirection;
 434
 435     Qt::MouseButtons acceptedMouseButtons;
 436     Qt::InputMethodHints imHints;
 437
 438     void setAccessibleFlagAndListener();
 439
 440     QPointF transformOriginPoint;
 441
 442     virtual qreal getImplicitWidth() const;
 443     virtual qreal getImplicitHeight() const;
 444     virtual void implicitWidthChanged();
 445     virtual void implicitHeightChanged();
 446
 447     void resolveLayoutMirror();
 448     void setImplicitLayoutMirror(bool mirror, bool inherit);
 449     void setLayoutMirror(bool mirror);
 450     bool isMirrored() const {
 451         return effectiveLayoutMirror;
 452     }
 453
 454     void emitChildrenRectChanged(const QRectF &rect) {
 455         Q_Q(QQuickItem);
 456         emit q->childrenRectChanged(rect);
 457     }
 458
 459     QPointF computeTransformOrigin() const;
 460     QList<QQuickTransform *> transforms;
 461     virtual void transformChanged();
 462
 463     QQuickItemKeyFilter *keyHandler;
 464     void deliverKeyEvent(QKeyEvent *);
 465     void deliverInputMethodEvent(QInputMethodEvent *);
 466     void deliverFocusEvent(QFocusEvent *);
 467     void deliverMouseEvent(QMouseEvent *);
 468     void deliverWheelEvent(QWheelEvent *);
 469     void deliverTouchEvent(QTouchEvent *);
 470     void deliverHoverEvent(QHoverEvent *);
 471     void deliverDragEvent(QEvent *);
 472
 473     bool calcEffectiveVisible() const;
 474     void setEffectiveVisibleRecur(bool);
 475     bool calcEffectiveEnable() const;
 476     void setEffectiveEnableRecur(QQuickItem *scope, bool);
 477
 478     // XXX todo
 479     enum DirtyType {
 480         TransformOrigin         = 0x00000001,
 481         Transform               = 0x00000002,
 482         BasicTransform          = 0x00000004,
 483         Position                = 0x00000008,
 484         Size                    = 0x00000010,
 485
 486         ZValue                  = 0x00000020,
 487         Content                 = 0x00000040,
 488         Smooth                  = 0x00000080,
 489         OpacityValue            = 0x00000100,
 490         ChildrenChanged         = 0x00000200,
 491         ChildrenStackingChanged = 0x00000400,
 492         ParentChanged           = 0x00000800,
 493
 494         Clip                    = 0x00001000,
 495         Canvas                  = 0x00002000,
 496
 497         EffectReference         = 0x00008000,
 498         Visible                 = 0x00010000,
 499         HideReference           = 0x00020000,
 500         PerformanceHints        = 0x00040000,
 501         // When you add an attribute here, don't forget to update
 502         // dirtyToString()
 503
 504         TransformUpdateMask     = TransformOrigin | Transform | BasicTransform | Position | Size | Canvas,
 505         ComplexTransformUpdateMask     = Transform | Canvas,
 506         ContentUpdateMask       = Size | Content | Smooth | Canvas,
 507         ChildrenUpdateMask      = ChildrenChanged | ChildrenStackingChanged | EffectReference | Canvas
 508
 509     };
 510     quint32 dirtyAttributes;
 511     QString dirtyToString() const;
 512     void dirty(DirtyType);
 513     void addToDirtyList();
 514     void removeFromDirtyList();
 515     QQuickItem *nextDirtyItem;
 516     QQuickItem**prevDirtyItem;
 517
 518     inline QSGTransformNode *itemNode();
 519     inline QSGNode *childContainerNode();
 520
 521     /*
 522       QSGNode order is:
 523          - itemNode
 524          - (opacityNode)
 525          - (clipNode)
 526          - (effectNode)
 527          - groupNode
 528      */
 529
 530     QSGTransformNode *itemNodeInstance;
 531     QSGOpacityNode *opacityNode;
 532     QQuickDefaultClipNode *clipNode;
 533     QSGRootNode *rootNode;
 534     QSGNode *groupNode;
 535     QSGNode *paintNode;
 536     QSGNode *beforePaintNode;
 537
 538     virtual QSGTransformNode *createTransformNode();
 539
 540     // A reference from an effect item means that this item is used by the effect, so
 541     // it should insert a root node.
 542     void refFromEffectItem(bool hide);
 543     void derefFromEffectItem(bool unhide);
 544     int effectRefCount;
 545     int hideRefCount;
 546
 547     void itemChange(QQuickItem::ItemChange, const QQuickItem::ItemChangeData &);
 548
 549     virtual void mirrorChange() {}
 550
 551     QQuickScreenAttached *screenAttached;
 552
 553     mutable QQuickItemLayer *_layer;
 554
 555     static qint64 consistentTime;
 556     static void setConsistentTime(qint64 t);
 557     static void start(QElapsedTimer &);
 558     static qint64 elapsed(QElapsedTimer &);
 559     static qint64 restart(QElapsedTimer &);
 560 };
 561
 562 /*
 563     Key filters can be installed on a QQuickItem, but not removed.  Currently they
 564     are only used by attached objects (which are only destroyed on Item
 565     destruction), so this isn't a problem.  If in future this becomes any form
 566     of public API, they will have to support removal too.
 567 */
 568 class QQuickItemKeyFilter
 569 {
 570 public:
 571     QQuickItemKeyFilter(QQuickItem * = 0);
 572     virtual ~QQuickItemKeyFilter();
 573
 574     virtual void keyPressed(QKeyEvent *event, bool post);
 575     virtual void keyReleased(QKeyEvent *event, bool post);
 576     virtual void inputMethodEvent(QInputMethodEvent *event, bool post);
 577     virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
 578     virtual void componentComplete();
 579
 580     bool m_processPost;
 581
 582 private:
 583     QQuickItemKeyFilter *m_next;
 584 };
 585
 586 class QQuickKeyNavigationAttachedPrivate : public QObjectPrivate
 587 {
 588 public:
 589     QQuickKeyNavigationAttachedPrivate()
 590         : QObjectPrivate(),
 591           left(0), right(0), up(0), down(0), tab(0), backtab(0),
 592           leftSet(false), rightSet(false), upSet(false), downSet(false),
 593           tabSet(false), backtabSet(false) {}
 594
 595     QQuickItem *left;
 596     QQuickItem *right;
 597     QQuickItem *up;
 598     QQuickItem *down;
 599     QQuickItem *tab;
 600     QQuickItem *backtab;
 601     bool leftSet : 1;
 602     bool rightSet : 1;
 603     bool upSet : 1;
 604     bool downSet : 1;
 605     bool tabSet : 1;
 606     bool backtabSet : 1;
 607 };
 608
 609 class QQuickKeyNavigationAttached : public QObject, public QQuickItemKeyFilter
 610 {
 611     Q_OBJECT
 612     Q_DECLARE_PRIVATE(QQuickKeyNavigationAttached)
 613
 614     Q_PROPERTY(QQuickItem *left READ left WRITE setLeft NOTIFY leftChanged)
 615     Q_PROPERTY(QQuickItem *right READ right WRITE setRight NOTIFY rightChanged)
 616     Q_PROPERTY(QQuickItem *up READ up WRITE setUp NOTIFY upChanged)
 617     Q_PROPERTY(QQuickItem *down READ down WRITE setDown NOTIFY downChanged)
 618     Q_PROPERTY(QQuickItem *tab READ tab WRITE setTab NOTIFY tabChanged)
 619     Q_PROPERTY(QQuickItem *backtab READ backtab WRITE setBacktab NOTIFY backtabChanged)
 620     Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
 621
 622     Q_ENUMS(Priority)
 623
 624 public:
 625     QQuickKeyNavigationAttached(QObject * = 0);
 626
 627     QQuickItem *left() const;
 628     void setLeft(QQuickItem *);
 629     QQuickItem *right() const;
 630     void setRight(QQuickItem *);
 631     QQuickItem *up() const;
 632     void setUp(QQuickItem *);
 633     QQuickItem *down() const;
 634     void setDown(QQuickItem *);
 635     QQuickItem *tab() const;
 636     void setTab(QQuickItem *);
 637     QQuickItem *backtab() const;
 638     void setBacktab(QQuickItem *);
 639
 640     enum Priority { BeforeItem, AfterItem };
 641     Priority priority() const;
 642     void setPriority(Priority);
 643
 644     static QQuickKeyNavigationAttached *qmlAttachedProperties(QObject *);
 645
 646 Q_SIGNALS:
 647     void leftChanged();
 648     void rightChanged();
 649     void upChanged();
 650     void downChanged();
 651     void tabChanged();
 652     void backtabChanged();
 653     void priorityChanged();
 654
 655 private:
 656     virtual void keyPressed(QKeyEvent *event, bool post);
 657     virtual void keyReleased(QKeyEvent *event, bool post);
 658     void setFocusNavigation(QQuickItem *currentItem, const char *dir);
 659 };
 660
 661 class QQuickLayoutMirroringAttached : public QObject
 662 {
 663     Q_OBJECT
 664     Q_PROPERTY(bool enabled READ enabled WRITE setEnabled RESET resetEnabled NOTIFY enabledChanged)
 665     Q_PROPERTY(bool childrenInherit READ childrenInherit WRITE setChildrenInherit NOTIFY childrenInheritChanged)
 666
 667 public:
 668     explicit QQuickLayoutMirroringAttached(QObject *parent = 0);
 669
 670     bool enabled() const;
 671     void setEnabled(bool);
 672     void resetEnabled();
 673
 674     bool childrenInherit() const;
 675     void setChildrenInherit(bool);
 676
 677     static QQuickLayoutMirroringAttached *qmlAttachedProperties(QObject *);
 678 Q_SIGNALS:
 679     void enabledChanged();
 680     void childrenInheritChanged();
 681 private:
 682     friend class QQuickItemPrivate;
 683     QQuickItemPrivate *itemPrivate;
 684 };
 685
 686 class QQuickKeysAttachedPrivate : public QObjectPrivate
 687 {
 688 public:
 689     QQuickKeysAttachedPrivate()
 690         : QObjectPrivate(), inPress(false), inRelease(false)
 691         , inIM(false), enabled(true), imeItem(0), item(0)
 692     {}
 693
 694     bool isConnected(const char *signalName);
 695
 696     //loop detection
 697     bool inPress:1;
 698     bool inRelease:1;
 699     bool inIM:1;
 700
 701     bool enabled : 1;
 702
 703     QQuickItem *imeItem;
 704     QList<QQuickItem *> targets;
 705     QQuickItem *item;
 706 };
 707
 708 class QQuickKeysAttached : public QObject, public QQuickItemKeyFilter
 709 {
 710     Q_OBJECT
 711     Q_DECLARE_PRIVATE(QQuickKeysAttached)
 712
 713     Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
 714     Q_PROPERTY(QDeclarativeListProperty<QQuickItem> forwardTo READ forwardTo)
 715     Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
 716
 717     Q_ENUMS(Priority)
 718
 719 public:
 720     QQuickKeysAttached(QObject *parent=0);
 721     ~QQuickKeysAttached();
 722
 723     bool enabled() const { Q_D(const QQuickKeysAttached); return d->enabled; }
 724     void setEnabled(bool enabled) {
 725         Q_D(QQuickKeysAttached);
 726         if (enabled != d->enabled) {
 727             d->enabled = enabled;
 728             emit enabledChanged();
 729         }
 730     }
 731
 732     enum Priority { BeforeItem, AfterItem};
 733     Priority priority() const;
 734     void setPriority(Priority);
 735
 736     QDeclarativeListProperty<QQuickItem> forwardTo() {
 737         Q_D(QQuickKeysAttached);
 738         return QDeclarativeListProperty<QQuickItem>(this, d->targets);
 739     }
 740
 741     virtual void componentComplete();
 742
 743     static QQuickKeysAttached *qmlAttachedProperties(QObject *);
 744
 745 Q_SIGNALS:
 746     void enabledChanged();
 747     void priorityChanged();
 748     void pressed(QQuickKeyEvent *event);
 749     void released(QQuickKeyEvent *event);
 750     void digit0Pressed(QQuickKeyEvent *event);
 751     void digit1Pressed(QQuickKeyEvent *event);
 752     void digit2Pressed(QQuickKeyEvent *event);
 753     void digit3Pressed(QQuickKeyEvent *event);
 754     void digit4Pressed(QQuickKeyEvent *event);
 755     void digit5Pressed(QQuickKeyEvent *event);
 756     void digit6Pressed(QQuickKeyEvent *event);
 757     void digit7Pressed(QQuickKeyEvent *event);
 758     void digit8Pressed(QQuickKeyEvent *event);
 759     void digit9Pressed(QQuickKeyEvent *event);
 760
 761     void leftPressed(QQuickKeyEvent *event);
 762     void rightPressed(QQuickKeyEvent *event);
 763     void upPressed(QQuickKeyEvent *event);
 764     void downPressed(QQuickKeyEvent *event);
 765     void tabPressed(QQuickKeyEvent *event);
 766     void backtabPressed(QQuickKeyEvent *event);
 767
 768     void asteriskPressed(QQuickKeyEvent *event);
 769     void numberSignPressed(QQuickKeyEvent *event);
 770     void escapePressed(QQuickKeyEvent *event);
 771     void returnPressed(QQuickKeyEvent *event);
 772     void enterPressed(QQuickKeyEvent *event);
 773     void deletePressed(QQuickKeyEvent *event);
 774     void spacePressed(QQuickKeyEvent *event);
 775     void backPressed(QQuickKeyEvent *event);
 776     void cancelPressed(QQuickKeyEvent *event);
 777     void selectPressed(QQuickKeyEvent *event);
 778     void yesPressed(QQuickKeyEvent *event);
 779     void noPressed(QQuickKeyEvent *event);
 780     void context1Pressed(QQuickKeyEvent *event);
 781     void context2Pressed(QQuickKeyEvent *event);
 782     void context3Pressed(QQuickKeyEvent *event);
 783     void context4Pressed(QQuickKeyEvent *event);
 784     void callPressed(QQuickKeyEvent *event);
 785     void hangupPressed(QQuickKeyEvent *event);
 786     void flipPressed(QQuickKeyEvent *event);
 787     void menuPressed(QQuickKeyEvent *event);
 788     void volumeUpPressed(QQuickKeyEvent *event);
 789     void volumeDownPressed(QQuickKeyEvent *event);
 790
 791 private:
 792     virtual void keyPressed(QKeyEvent *event, bool post);
 793     virtual void keyReleased(QKeyEvent *event, bool post);
 794     virtual void inputMethodEvent(QInputMethodEvent *, bool post);
 795     virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
 796
 797     const QByteArray keyToSignal(int key) {
 798         QByteArray keySignal;
 799         if (key >= Qt::Key_0 && key <= Qt::Key_9) {
 800             keySignal = "digit0Pressed";
 801             keySignal[5] = '0' + (key - Qt::Key_0);
 802         } else {
 803             int i = 0;
 804             while (sigMap[i].key && sigMap[i].key != key)
 805                 ++i;
 806             keySignal = sigMap[i].sig;
 807         }
 808         return keySignal;
 809     }
 810
 811     struct SigMap {
 812         int key;
 813         const char *sig;
 814     };
 815
 816     static const SigMap sigMap[];
 817 };
 818
 819 QSGTransformNode *QQuickItemPrivate::itemNode()
 820 {
 821     if (!itemNodeInstance) {
 822         itemNodeInstance = createTransformNode();
 823         itemNodeInstance->setFlag(QSGNode::OwnedByParent, false);
 824 #ifdef QML_RUNTIME_TESTING
 825         Q_Q(QQuickItem);
 826         itemNodeInstance->description = QString::fromLatin1("QQuickItem(%1)").arg(QString::fromLatin1(q->metaObject()->className()));
 827 #endif
 828     }
 829     return itemNodeInstance;
 830 }
 831
 832 QSGNode *QQuickItemPrivate::childContainerNode()
 833 {
 834     if (!groupNode) {
 835         groupNode = new QSGNode();
 836         if (rootNode)
 837             rootNode->appendChildNode(groupNode);
 838         else if (clipNode)
 839             clipNode->appendChildNode(groupNode);
 840         else if (opacityNode)
 841             opacityNode->appendChildNode(groupNode);
 842         else
 843             itemNode()->appendChildNode(groupNode);
 844         groupNode->setFlag(QSGNode::ChildrenDoNotOverlap, childrenDoNotOverlap);
 845         groupNode->setFlag(QSGNode::StaticSubtreeGeometry, staticSubtreeGeometry);
 846 #ifdef QML_RUNTIME_TESTING
 847         groupNode->description = QLatin1String("group");
 848 #endif
 849     }
 850     return groupNode;
 851 }
 852
 853 Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickItemPrivate::ChangeTypes);
 854
 855 QT_END_NAMESPACE
 856
 857 QML_DECLARE_TYPE(QQuickItemLayer)
 858 QML_DECLARE_TYPE(QQuickKeysAttached)
 859 QML_DECLARE_TYPEINFO(QQuickKeysAttached, QML_HAS_ATTACHED_PROPERTIES)
 860 QML_DECLARE_TYPE(QQuickKeyNavigationAttached)
 861 QML_DECLARE_TYPEINFO(QQuickKeyNavigationAttached, QML_HAS_ATTACHED_PROPERTIES)
 862 QML_DECLARE_TYPE(QQuickLayoutMirroringAttached)
 863 QML_DECLARE_TYPEINFO(QQuickLayoutMirroringAttached, QML_HAS_ATTACHED_PROPERTIES)
 864
 865 #endif // QQUICKITEM_P_H