src/declarative/graphicsitems/qdeclarativepathview_p_p.h
changeset 30 5dc02b23752f
child 33 3e2da88830cd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/declarative/graphicsitems/qdeclarativepathview_p_p.h	Tue Jul 06 15:10:48 2010 +0300
@@ -0,0 +1,168 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 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 QDECLARATIVEPATHVIEW_P_H
+#define QDECLARATIVEPATHVIEW_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/qdeclarativepathview_p.h"
+
+#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativevisualitemmodel_p.h"
+
+#include <qdeclarative.h>
+#include <qdeclarativeanimation_p_p.h>
+#include <qdeclarativeguard_p.h>
+
+#include <qdatetime.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeOpenMetaObjectType;
+class QDeclarativePathViewAttached;
+class QDeclarativePathViewPrivate : public QDeclarativeItemPrivate
+{
+    Q_DECLARE_PUBLIC(QDeclarativePathView)
+
+public:
+    QDeclarativePathViewPrivate()
+      : path(0), currentIndex(0), currentItemOffset(0.0), startPc(0), lastDist(0)
+        , lastElapsed(0), mappedRange(1.0)
+        , stealMouse(false), ownModel(false), interactive(true), haveHighlightRange(true)
+        , autoHighlight(true), highlightUp(false), dragMargin(0), deceleration(100)
+        , moveOffset(this, &QDeclarativePathViewPrivate::setOffset)
+        , firstIndex(-1), pathItems(-1), requestedIndex(-1)
+        , moveReason(Other), attType(0), highlightComponent(0), highlightItem(0)
+        , moveHighlight(this, &QDeclarativePathViewPrivate::setHighlightPosition)
+        , highlightPosition(0)
+        , highlightRangeStart(0), highlightRangeEnd(0)
+        , highlightRangeMode(QDeclarativePathView::StrictlyEnforceRange)
+        , highlightMoveDuration(300)
+    {
+    }
+
+    void init()
+    {
+        Q_Q(QDeclarativePathView);
+        offset = 0;
+        q->setAcceptedMouseButtons(Qt::LeftButton);
+        q->setFlag(QGraphicsItem::ItemIsFocusScope);
+        q->setFiltersChildEvents(true);
+        q->connect(&tl, SIGNAL(updated()), q, SLOT(ticked()));
+    }
+
+    QDeclarativeItem *getItem(int modelIndex);
+    void releaseItem(QDeclarativeItem *item);
+    QDeclarativePathViewAttached *attached(QDeclarativeItem *item);
+    void clear();
+    void updateMappedRange();
+    qreal positionOfIndex(qreal index) const;
+    void createHighlight();
+    void updateHighlight();
+    void setHighlightPosition(qreal pos);
+    bool isValid() const {
+        return model && model->count() > 0 && model->isValid() && path;
+    }
+
+    int calcCurrentIndex();
+    void updateCurrent();
+    static void fixOffsetCallback(void*);
+    void fixOffset();
+    void setOffset(qreal offset);
+    void regenerate();
+    void updateItem(QDeclarativeItem *, qreal);
+    void snapToCurrent();
+    QPointF pointNear(const QPointF &point, qreal *nearPercent=0) const;
+
+    QDeclarativePath *path;
+    int currentIndex;
+    QDeclarativeGuard<QDeclarativeItem> currentItem;
+    qreal currentItemOffset;
+    qreal startPc;
+    QPointF startPoint;
+    qreal lastDist;
+    int lastElapsed;
+    qreal offset;
+    qreal mappedRange;
+    bool stealMouse : 1;
+    bool ownModel : 1;
+    bool interactive : 1;
+    bool haveHighlightRange : 1;
+    bool autoHighlight : 1;
+    bool highlightUp : 1;
+    QTime lastPosTime;
+    QPointF lastPos;
+    qreal dragMargin;
+    qreal deceleration;
+    QDeclarativeTimeLine tl;
+    QDeclarativeTimeLineValueProxy<QDeclarativePathViewPrivate> moveOffset;
+    int firstIndex;
+    int pathItems;
+    int requestedIndex;
+    QList<QDeclarativeItem *> items;
+    QDeclarativeGuard<QDeclarativeVisualModel> model;
+    QVariant modelVariant;
+    enum MovementReason { Other, SetIndex, Mouse };
+    MovementReason moveReason;
+    QDeclarativeOpenMetaObjectType *attType;
+    QDeclarativeComponent *highlightComponent;
+    QDeclarativeItem *highlightItem;
+    QDeclarativeTimeLineValueProxy<QDeclarativePathViewPrivate> moveHighlight;
+    qreal highlightPosition;
+    qreal highlightRangeStart;
+    qreal highlightRangeEnd;
+    QDeclarativePathView::HighlightRangeMode highlightRangeMode;
+    int highlightMoveDuration;
+};
+
+QT_END_NAMESPACE
+
+#endif