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Diffstat (limited to 'src/declarative/items/qsgitem_p.h')
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1 files changed, 712 insertions, 0 deletions
diff --git a/src/declarative/items/qsgitem_p.h b/src/declarative/items/qsgitem_p.h new file mode 100644 index 0000000000..c76eceb674 --- /dev/null +++ b/src/declarative/items/qsgitem_p.h @@ -0,0 +1,712 @@ +// Commit: 5c783d0a9a912816813945387903857a314040b5 +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSGITEM_P_H +#define QSGITEM_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 "qsgitem.h" + +#include "qsganchors_p.h" +#include "qsganchors_p_p.h" +#include "qsgitemchangelistener_p.h" + +#include "qsgcanvas_p.h" + +#include "qsgnode.h" +#include "qsgclipnode_p.h" + +#include <private/qpodvector_p.h> +#include <private/qdeclarativestate_p.h> +#include <private/qdeclarativenullablevalue_p_p.h> +#include <private/qdeclarativenotifier_p.h> +#include <private/qdeclarativeglobal_p.h> + +#include <qdeclarative.h> +#include <qdeclarativecontext.h> + +#include <QtCore/qlist.h> +#include <QtCore/qdebug.h> +#include <QtCore/qelapsedtimer.h> + +QT_BEGIN_NAMESPACE + +class QNetworkReply; +class QSGItemKeyFilter; +class QSGLayoutMirroringAttached; + +//### merge into private? +class QSGContents : public QObject, public QSGItemChangeListener +{ + Q_OBJECT +public: + QSGContents(QSGItem *item); + ~QSGContents(); + + QRectF rectF() const; + + void childRemoved(QSGItem *item); + void childAdded(QSGItem *item); + + void calcGeometry() { calcWidth(); calcHeight(); } + void complete(); + +Q_SIGNALS: + void rectChanged(QRectF); + +protected: + void itemGeometryChanged(QSGItem *item, const QRectF &newGeometry, const QRectF &oldGeometry); + void itemDestroyed(QSGItem *item); + //void itemVisibilityChanged(QSGItem *item) + +private: + void calcHeight(QSGItem *changed = 0); + void calcWidth(QSGItem *changed = 0); + + QSGItem *m_item; + qreal m_x; + qreal m_y; + qreal m_width; + qreal m_height; +}; + +class QSGTransformPrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QSGTransform); +public: + static QSGTransformPrivate* get(QSGTransform *transform) { return transform->d_func(); } + + QSGTransformPrivate(); + + QList<QSGItem *> items; +}; + +class Q_DECLARATIVE_EXPORT QSGItemPrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QSGItem) + +public: + static QSGItemPrivate* get(QSGItem *item) { return item->d_func(); } + static const QSGItemPrivate* get(const QSGItem *item) { return item->d_func(); } + + QSGItemPrivate(); + void init(QSGItem *parent); + + QDeclarativeListProperty<QObject> data(); + QDeclarativeListProperty<QObject> resources(); + QDeclarativeListProperty<QSGItem> children(); + + QDeclarativeListProperty<QDeclarativeState> states(); + QDeclarativeListProperty<QDeclarativeTransition> transitions(); + + QString state() const; + void setState(const QString &); + + QSGAnchorLine left() const; + QSGAnchorLine right() const; + QSGAnchorLine horizontalCenter() const; + QSGAnchorLine top() const; + QSGAnchorLine bottom() const; + QSGAnchorLine verticalCenter() const; + QSGAnchorLine baseline() const; + + // data property + static void data_append(QDeclarativeListProperty<QObject> *, QObject *); + static int data_count(QDeclarativeListProperty<QObject> *); + static QObject *data_at(QDeclarativeListProperty<QObject> *, int); + static void data_clear(QDeclarativeListProperty<QObject> *); + + // resources property + static QObject *resources_at(QDeclarativeListProperty<QObject> *, int); + static void resources_append(QDeclarativeListProperty<QObject> *, QObject *); + static int resources_count(QDeclarativeListProperty<QObject> *); + static void resources_clear(QDeclarativeListProperty<QObject> *); + + // children property + static void children_append(QDeclarativeListProperty<QSGItem> *, QSGItem *); + static int children_count(QDeclarativeListProperty<QSGItem> *); + static QSGItem *children_at(QDeclarativeListProperty<QSGItem> *, int); + static void children_clear(QDeclarativeListProperty<QSGItem> *); + + // transform property + static int transform_count(QDeclarativeListProperty<QSGTransform> *list); + static void transform_append(QDeclarativeListProperty<QSGTransform> *list, QSGTransform *); + static QSGTransform *transform_at(QDeclarativeListProperty<QSGTransform> *list, int); + static void transform_clear(QDeclarativeListProperty<QSGTransform> *list); + + QSGAnchors *anchors() const; + mutable QSGAnchors *_anchors; + QSGContents *_contents; + + QDeclarativeNullableValue<qreal> baselineOffset; + + struct AnchorLines { + AnchorLines(QSGItem *); + QSGAnchorLine left; + QSGAnchorLine right; + QSGAnchorLine hCenter; + QSGAnchorLine top; + QSGAnchorLine bottom; + QSGAnchorLine vCenter; + QSGAnchorLine baseline; + }; + mutable AnchorLines *_anchorLines; + AnchorLines *anchorLines() const; + + enum ChangeType { + Geometry = 0x01, + SiblingOrder = 0x02, + Visibility = 0x04, + Opacity = 0x08, + Destroyed = 0x10, + Parent = 0x20, + Children = 0x40, + Rotation = 0x80, + }; + + Q_DECLARE_FLAGS(ChangeTypes, ChangeType) + + struct ChangeListener { + ChangeListener(QSGItemChangeListener *l, QSGItemPrivate::ChangeTypes t) : listener(l), types(t) {} + QSGItemChangeListener *listener; + QSGItemPrivate::ChangeTypes types; + bool operator==(const ChangeListener &other) const { return listener == other.listener && types == other.types; } + }; + + void addItemChangeListener(QSGItemChangeListener *listener, ChangeTypes types) { + changeListeners.append(ChangeListener(listener, types)); + } + void removeItemChangeListener(QSGItemChangeListener *, ChangeTypes types); + QPODVector<ChangeListener,4> changeListeners; + + QDeclarativeStateGroup *_states(); + QDeclarativeStateGroup *_stateGroup; + + QSGItem::TransformOrigin origin:5; + quint32 flags:4; + bool widthValid:1; + bool heightValid:1; + bool componentComplete:1; + bool keepMouse:1; + bool hoverEnabled:1; + bool smooth:1; + bool focus:1; + bool activeFocus:1; + bool notifiedFocus:1; + bool notifiedActiveFocus:1; + bool filtersChildMouseEvents:1; + bool explicitVisible:1; + bool effectiveVisible:1; + bool explicitEnable:1; + bool effectiveEnable:1; + bool polishScheduled:1; + bool inheritedLayoutMirror:1; + bool effectiveLayoutMirror:1; + bool isMirrorImplicit:1; + bool inheritMirrorFromParent:1; + bool inheritMirrorFromItem:1; + bool childrenDoNotOverlap:1; + quint32 dummy:1; + + QSGCanvas *canvas; + QSGContext *sceneGraphContext() const { return static_cast<QSGCanvasPrivate *>(QObjectPrivate::get(canvas))->context; } + + QSGItem *parentItem; + QList<QSGItem *> childItems; + QList<QSGItem *> paintOrderChildItems() const; + void addChild(QSGItem *); + void removeChild(QSGItem *); + void siblingOrderChanged(); + + class InitializationState { + public: + QSGItem *getFocusScope(QSGItem *item); + void clear(); + void clear(QSGItem *focusScope); + private: + QSGItem *focusScope; + }; + void initCanvas(InitializationState *, QSGCanvas *); + + QSGItem *subFocusItem; + + QTransform canvasToItemTransform() const; + QTransform itemToCanvasTransform() const; + void itemToParentTransform(QTransform &) const; + + qreal x; + qreal y; + qreal width; + qreal height; + qreal implicitWidth; + qreal implicitHeight; + + qreal z; + qreal scale; + qreal rotation; + qreal opacity; + + QSGLayoutMirroringAttached* attachedLayoutDirection; + + Qt::MouseButtons acceptedMouseButtons; + Qt::InputMethodHints imHints; + + virtual qreal getImplicitWidth() const; + virtual qreal getImplicitHeight() const; + virtual void implicitWidthChanged(); + virtual void implicitHeightChanged(); + + void resolveLayoutMirror(); + void setImplicitLayoutMirror(bool mirror, bool inherit); + void setLayoutMirror(bool mirror); + bool isMirrored() const { + return effectiveLayoutMirror; + } + + QPointF computeTransformOrigin() const; + QList<QSGTransform *> transforms; + virtual void transformChanged(); + + QSGItemKeyFilter *keyHandler; + void deliverKeyEvent(QKeyEvent *); + void deliverInputMethodEvent(QInputMethodEvent *); + void deliverFocusEvent(QFocusEvent *); + void deliverMouseEvent(QGraphicsSceneMouseEvent *); + void deliverWheelEvent(QGraphicsSceneWheelEvent *); + void deliverTouchEvent(QTouchEvent *); + void deliverHoverEvent(QGraphicsSceneHoverEvent *); + + bool calcEffectiveVisible() const; + void setEffectiveVisibleRecur(bool); + bool calcEffectiveEnable() const; + void setEffectiveEnableRecur(bool); + + // XXX todo + enum DirtyType { + TransformOrigin = 0x00000001, + Transform = 0x00000002, + BasicTransform = 0x00000004, + Position = 0x00000008, + Size = 0x00000010, + + ZValue = 0x00000020, + Content = 0x00000040, + Smooth = 0x00000080, + OpacityValue = 0x00000100, + ChildrenChanged = 0x00000200, + ChildrenStackingChanged = 0x00000400, + ParentChanged = 0x00000800, + + Clip = 0x00001000, + Canvas = 0x00002000, + + EffectReference = 0x00008000, + Visible = 0x00010000, + HideReference = 0x00020000, + // When you add an attribute here, don't forget to update + // dirtyToString() + + TransformUpdateMask = TransformOrigin | Transform | BasicTransform | Position | Size | Canvas, + ComplexTransformUpdateMask = Transform | Canvas, + ContentUpdateMask = Size | Content | Smooth | Canvas, + ChildrenUpdateMask = ChildrenChanged | ChildrenStackingChanged | EffectReference | Canvas, + + }; + quint32 dirtyAttributes; + QString dirtyToString() const; + void dirty(DirtyType); + void addToDirtyList(); + void removeFromDirtyList(); + QSGItem *nextDirtyItem; + QSGItem**prevDirtyItem; + + inline QSGTransformNode *itemNode(); + inline QSGNode *childContainerNode(); + + /* + QSGNode order is: + - itemNode + - (opacityNode) + - (clipNode) + - (effectNode) + - groupNode + */ + + QSGTransformNode *itemNodeInstance; + QSGOpacityNode *opacityNode; + QSGDefaultClipNode *clipNode; + QSGRootNode *rootNode; + QSGNode *groupNode; + QSGNode *paintNode; + int paintNodeIndex; + + virtual QSGTransformNode *createTransformNode(); + + // A reference from an effect item means that this item is used by the effect, so + // it should insert a root node. + void refFromEffectItem(bool hide); + void derefFromEffectItem(bool unhide); + int effectRefCount; + int hideRefCount; + + void itemChange(QSGItem::ItemChange, const QSGItem::ItemChangeData &); + + virtual void mirrorChange() {} + + static qint64 consistentTime; + static void setConsistentTime(qint64 t); + static void start(QElapsedTimer &); + static qint64 elapsed(QElapsedTimer &); + static qint64 restart(QElapsedTimer &); +}; + +/* + Key filters can be installed on a QSGItem, but not removed. Currently they + are only used by attached objects (which are only destroyed on Item + destruction), so this isn't a problem. If in future this becomes any form + of public API, they will have to support removal too. +*/ +class QSGItemKeyFilter +{ +public: + QSGItemKeyFilter(QSGItem * = 0); + virtual ~QSGItemKeyFilter(); + + virtual void keyPressed(QKeyEvent *event, bool post); + virtual void keyReleased(QKeyEvent *event, bool post); + virtual void inputMethodEvent(QInputMethodEvent *event, bool post); + virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const; + virtual void componentComplete(); + + bool m_processPost; + +private: + QSGItemKeyFilter *m_next; +}; + +class QSGKeyNavigationAttachedPrivate : public QObjectPrivate +{ +public: + QSGKeyNavigationAttachedPrivate() + : QObjectPrivate(), + left(0), right(0), up(0), down(0), tab(0), backtab(0), + leftSet(false), rightSet(false), upSet(false), downSet(false), + tabSet(false), backtabSet(false) {} + + QSGItem *left; + QSGItem *right; + QSGItem *up; + QSGItem *down; + QSGItem *tab; + QSGItem *backtab; + bool leftSet : 1; + bool rightSet : 1; + bool upSet : 1; + bool downSet : 1; + bool tabSet : 1; + bool backtabSet : 1; +}; + +class QSGKeyNavigationAttached : public QObject, public QSGItemKeyFilter +{ + Q_OBJECT + Q_DECLARE_PRIVATE(QSGKeyNavigationAttached) + + Q_PROPERTY(QSGItem *left READ left WRITE setLeft NOTIFY leftChanged) + Q_PROPERTY(QSGItem *right READ right WRITE setRight NOTIFY rightChanged) + Q_PROPERTY(QSGItem *up READ up WRITE setUp NOTIFY upChanged) + Q_PROPERTY(QSGItem *down READ down WRITE setDown NOTIFY downChanged) + Q_PROPERTY(QSGItem *tab READ tab WRITE setTab NOTIFY tabChanged) + Q_PROPERTY(QSGItem *backtab READ backtab WRITE setBacktab NOTIFY backtabChanged) + Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged) + + Q_ENUMS(Priority) + +public: + QSGKeyNavigationAttached(QObject * = 0); + + QSGItem *left() const; + void setLeft(QSGItem *); + QSGItem *right() const; + void setRight(QSGItem *); + QSGItem *up() const; + void setUp(QSGItem *); + QSGItem *down() const; + void setDown(QSGItem *); + QSGItem *tab() const; + void setTab(QSGItem *); + QSGItem *backtab() const; + void setBacktab(QSGItem *); + + enum Priority { BeforeItem, AfterItem }; + Priority priority() const; + void setPriority(Priority); + + static QSGKeyNavigationAttached *qmlAttachedProperties(QObject *); + +Q_SIGNALS: + void leftChanged(); + void rightChanged(); + void upChanged(); + void downChanged(); + void tabChanged(); + void backtabChanged(); + void priorityChanged(); + +private: + virtual void keyPressed(QKeyEvent *event, bool post); + virtual void keyReleased(QKeyEvent *event, bool post); + void setFocusNavigation(QSGItem *currentItem, const char *dir); +}; + +class QSGLayoutMirroringAttached : public QObject +{ + Q_OBJECT + Q_PROPERTY(bool enabled READ enabled WRITE setEnabled RESET resetEnabled NOTIFY enabledChanged) + Q_PROPERTY(bool childrenInherit READ childrenInherit WRITE setChildrenInherit NOTIFY childrenInheritChanged) + +public: + explicit QSGLayoutMirroringAttached(QObject *parent = 0); + + bool enabled() const; + void setEnabled(bool); + void resetEnabled(); + + bool childrenInherit() const; + void setChildrenInherit(bool); + + static QSGLayoutMirroringAttached *qmlAttachedProperties(QObject *); +Q_SIGNALS: + void enabledChanged(); + void childrenInheritChanged(); +private: + friend class QSGItemPrivate; + QSGItemPrivate *itemPrivate; +}; + +class QSGKeysAttachedPrivate : public QObjectPrivate +{ +public: + QSGKeysAttachedPrivate() + : QObjectPrivate(), inPress(false), inRelease(false) + , inIM(false), enabled(true), imeItem(0), item(0) + {} + + bool isConnected(const char *signalName); + + //loop detection + bool inPress:1; + bool inRelease:1; + bool inIM:1; + + bool enabled : 1; + + QSGItem *imeItem; + QList<QSGItem *> targets; + QSGItem *item; +}; + +class QSGKeysAttached : public QObject, public QSGItemKeyFilter +{ + Q_OBJECT + Q_DECLARE_PRIVATE(QSGKeysAttached) + + Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged) + Q_PROPERTY(QDeclarativeListProperty<QSGItem> forwardTo READ forwardTo) + Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged) + + Q_ENUMS(Priority) + +public: + QSGKeysAttached(QObject *parent=0); + ~QSGKeysAttached(); + + bool enabled() const { Q_D(const QSGKeysAttached); return d->enabled; } + void setEnabled(bool enabled) { + Q_D(QSGKeysAttached); + if (enabled != d->enabled) { + d->enabled = enabled; + emit enabledChanged(); + } + } + + enum Priority { BeforeItem, AfterItem}; + Priority priority() const; + void setPriority(Priority); + + QDeclarativeListProperty<QSGItem> forwardTo() { + Q_D(QSGKeysAttached); + return QDeclarativeListProperty<QSGItem>(this, d->targets); + } + + virtual void componentComplete(); + + static QSGKeysAttached *qmlAttachedProperties(QObject *); + +Q_SIGNALS: + void enabledChanged(); + void priorityChanged(); + void pressed(QSGKeyEvent *event); + void released(QSGKeyEvent *event); + void digit0Pressed(QSGKeyEvent *event); + void digit1Pressed(QSGKeyEvent *event); + void digit2Pressed(QSGKeyEvent *event); + void digit3Pressed(QSGKeyEvent *event); + void digit4Pressed(QSGKeyEvent *event); + void digit5Pressed(QSGKeyEvent *event); + void digit6Pressed(QSGKeyEvent *event); + void digit7Pressed(QSGKeyEvent *event); + void digit8Pressed(QSGKeyEvent *event); + void digit9Pressed(QSGKeyEvent *event); + + void leftPressed(QSGKeyEvent *event); + void rightPressed(QSGKeyEvent *event); + void upPressed(QSGKeyEvent *event); + void downPressed(QSGKeyEvent *event); + void tabPressed(QSGKeyEvent *event); + void backtabPressed(QSGKeyEvent *event); + + void asteriskPressed(QSGKeyEvent *event); + void numberSignPressed(QSGKeyEvent *event); + void escapePressed(QSGKeyEvent *event); + void returnPressed(QSGKeyEvent *event); + void enterPressed(QSGKeyEvent *event); + void deletePressed(QSGKeyEvent *event); + void spacePressed(QSGKeyEvent *event); + void backPressed(QSGKeyEvent *event); + void cancelPressed(QSGKeyEvent *event); + void selectPressed(QSGKeyEvent *event); + void yesPressed(QSGKeyEvent *event); + void noPressed(QSGKeyEvent *event); + void context1Pressed(QSGKeyEvent *event); + void context2Pressed(QSGKeyEvent *event); + void context3Pressed(QSGKeyEvent *event); + void context4Pressed(QSGKeyEvent *event); + void callPressed(QSGKeyEvent *event); + void hangupPressed(QSGKeyEvent *event); + void flipPressed(QSGKeyEvent *event); + void menuPressed(QSGKeyEvent *event); + void volumeUpPressed(QSGKeyEvent *event); + void volumeDownPressed(QSGKeyEvent *event); + +private: + virtual void keyPressed(QKeyEvent *event, bool post); + virtual void keyReleased(QKeyEvent *event, bool post); + virtual void inputMethodEvent(QInputMethodEvent *, bool post); + virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const; + + const QByteArray keyToSignal(int key) { + QByteArray keySignal; + if (key >= Qt::Key_0 && key <= Qt::Key_9) { + keySignal = "digit0Pressed"; + keySignal[5] = '0' + (key - Qt::Key_0); + } else { + int i = 0; + while (sigMap[i].key && sigMap[i].key != key) + ++i; + keySignal = sigMap[i].sig; + } + return keySignal; + } + + struct SigMap { + int key; + const char *sig; + }; + + static const SigMap sigMap[]; +}; + +QSGTransformNode *QSGItemPrivate::itemNode() +{ + if (!itemNodeInstance) { + itemNodeInstance = createTransformNode(); +#ifdef QML_RUNTIME_TESTING + Q_Q(QSGItem); + itemNodeInstance->description = QString::fromLatin1("QSGItem(%1)").arg(QString::fromLatin1(q->metaObject()->className())); +#endif + } + return itemNodeInstance; +} + +QSGNode *QSGItemPrivate::childContainerNode() +{ + if (!groupNode) { + groupNode = new QSGNode(); + if (rootNode) + rootNode->appendChildNode(groupNode); + else if (clipNode) + clipNode->appendChildNode(groupNode); + else if (opacityNode) + opacityNode->appendChildNode(groupNode); + else + itemNode()->appendChildNode(groupNode); + groupNode->setFlag(QSGNode::ChildrenDoNotOverlap, childrenDoNotOverlap); +#ifdef QML_RUNTIME_TESTING + groupNode->description = QLatin1String("group"); +#endif + } + return groupNode; +} + +Q_DECLARE_OPERATORS_FOR_FLAGS(QSGItemPrivate::ChangeTypes); + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QSGKeysAttached) +QML_DECLARE_TYPEINFO(QSGKeysAttached, QML_HAS_ATTACHED_PROPERTIES) +QML_DECLARE_TYPE(QSGKeyNavigationAttached) +QML_DECLARE_TYPEINFO(QSGKeyNavigationAttached, QML_HAS_ATTACHED_PROPERTIES) +QML_DECLARE_TYPE(QSGLayoutMirroringAttached) +QML_DECLARE_TYPEINFO(QSGLayoutMirroringAttached, QML_HAS_ATTACHED_PROPERTIES) + +#endif // QSGITEM_P_H |