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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 241 insertions, 0 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativeflickable_p_p.h b/src/declarative/graphicsitems/qdeclarativeflickable_p_p.h
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+++ b/src/declarative/graphicsitems/qdeclarativeflickable_p_p.h
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+/****************************************************************************
+**
+** 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 QDECLARATIVEFLICKABLE_P_H
+#define QDECLARATIVEFLICKABLE_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 "private/qdeclarativeflickable_p.h"
+
+#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativeitemchangelistener_p.h"
+
+#include <qdeclarative.h>
+#include <qdeclarativetimeline_p_p.h>
+#include <qdeclarativeanimation_p_p.h>
+
+#include <qdatetime.h>
+
+QT_BEGIN_NAMESPACE
+
+// Really slow flicks can be annoying.
+const qreal MinimumFlickVelocity = 75.0;
+
+class QDeclarativeFlickableVisibleArea;
+class QDeclarativeFlickablePrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener
+{
+    Q_DECLARE_PUBLIC(QDeclarativeFlickable)
+
+public:
+    QDeclarativeFlickablePrivate();
+    void init();
+
+    struct Velocity : public QDeclarativeTimeLineValue
+    {
+        Velocity(QDeclarativeFlickablePrivate *p)
+            : parent(p) {}
+        virtual void setValue(qreal v) {
+            if (v != value()) {
+                QDeclarativeTimeLineValue::setValue(v);
+                parent->updateVelocity();
+            }
+        }
+        QDeclarativeFlickablePrivate *parent;
+    };
+
+    struct AxisData {
+        AxisData(QDeclarativeFlickablePrivate *fp, void (QDeclarativeFlickablePrivate::*func)(qreal))
+            : move(fp, func), viewSize(-1), smoothVelocity(fp), atEnd(false), atBeginning(true)
+            , fixingUp(false), inOvershoot(false)
+        {}
+
+        void reset() {
+            velocityBuffer.clear();
+            dragStartOffset = 0;
+            fixingUp = false;
+            inOvershoot = false;
+        }
+
+        void addVelocitySample(qreal v, qreal maxVelocity);
+        void updateVelocity();
+
+        QDeclarativeTimeLineValueProxy<QDeclarativeFlickablePrivate> move;
+        qreal viewSize;
+        qreal pressPos;
+        qreal dragStartOffset;
+        qreal dragMinBound;
+        qreal dragMaxBound;
+        qreal velocity;
+        qreal flickTarget;
+        QDeclarativeFlickablePrivate::Velocity smoothVelocity;
+        QPODVector<qreal,10> velocityBuffer;
+        bool atEnd : 1;
+        bool atBeginning : 1;
+        bool fixingUp : 1;
+        bool inOvershoot : 1;
+    };
+
+    void flickX(qreal velocity);
+    void flickY(qreal velocity);
+    virtual void flick(AxisData &data, qreal minExtent, qreal maxExtent, qreal vSize,
+                        QDeclarativeTimeLineCallback::Callback fixupCallback, qreal velocity);
+
+    void fixupX();
+    void fixupY();
+    virtual void fixup(AxisData &data, qreal minExtent, qreal maxExtent);
+
+    void updateBeginningEnd();
+
+    bool isOutermostPressDelay() const;
+    void captureDelayedPress(QGraphicsSceneMouseEvent *event);
+    void clearDelayedPress();
+
+    void setRoundedViewportX(qreal x);
+    void setRoundedViewportY(qreal y);
+
+    qreal overShootDistance(qreal size);
+
+    void itemGeometryChanged(QDeclarativeItem *, const QRectF &, const QRectF &);
+
+public:
+    QDeclarativeItem *contentItem;
+
+    AxisData hData;
+    AxisData vData;
+
+    QDeclarativeTimeLine timeline;
+    bool flickingHorizontally : 1;
+    bool flickingVertically : 1;
+    bool hMoved : 1;
+    bool vMoved : 1;
+    bool movingHorizontally : 1;
+    bool movingVertically : 1;
+    bool stealMouse : 1;
+    bool pressed : 1;
+    bool interactive : 1;
+    bool calcVelocity : 1;
+    QElapsedTimer lastPosTime;
+    QPointF lastPos;
+    QPointF pressPos;
+    QElapsedTimer pressTime;
+    qreal deceleration;
+    qreal maxVelocity;
+    QElapsedTimer velocityTime;
+    QPointF lastFlickablePosition;
+    qreal reportedVelocitySmoothing;
+    QGraphicsSceneMouseEvent *delayedPressEvent;
+    QGraphicsItem *delayedPressTarget;
+    QBasicTimer delayedPressTimer;
+    int pressDelay;
+    int fixupDuration;
+
+    enum FixupMode { Normal, Immediate, ExtentChanged };
+    FixupMode fixupMode;
+
+    static void fixupY_callback(void *);
+    static void fixupX_callback(void *);
+
+    void updateVelocity();
+    int vTime;
+    QDeclarativeTimeLine velocityTimeline;
+    QDeclarativeFlickableVisibleArea *visibleArea;
+    QDeclarativeFlickable::FlickableDirection flickableDirection;
+    QDeclarativeFlickable::BoundsBehavior boundsBehavior;
+
+    void handleMousePressEvent(QGraphicsSceneMouseEvent *);
+    void handleMouseMoveEvent(QGraphicsSceneMouseEvent *);
+    void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *);
+
+    // flickableData 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> *);
+};
+
+class QDeclarativeFlickableVisibleArea : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(qreal xPosition READ xPosition NOTIFY xPositionChanged)
+    Q_PROPERTY(qreal yPosition READ yPosition NOTIFY yPositionChanged)
+    Q_PROPERTY(qreal widthRatio READ widthRatio NOTIFY widthRatioChanged)
+    Q_PROPERTY(qreal heightRatio READ heightRatio NOTIFY heightRatioChanged)
+
+public:
+    QDeclarativeFlickableVisibleArea(QDeclarativeFlickable *parent=0);
+
+    qreal xPosition() const;
+    qreal widthRatio() const;
+    qreal yPosition() const;
+    qreal heightRatio() const;
+
+    void updateVisible();
+
+signals:
+    void xPositionChanged(qreal xPosition);
+    void yPositionChanged(qreal yPosition);
+    void widthRatioChanged(qreal widthRatio);
+    void heightRatioChanged(qreal heightRatio);
+
+private:
+    QDeclarativeFlickable *flickable;
+    qreal m_xPosition;
+    qreal m_widthRatio;
+    qreal m_yPosition;
+    qreal m_heightRatio;
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativeFlickableVisibleArea)
+
+#endif