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/****************************************************************************
**
** 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 QSGCANVAS_P_H
#define QSGCANVAS_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 "qsgcanvas.h"
#include <private/qdeclarativeguard_p.h>
#include <private/qsgcontext_p.h>
#include <QtCore/qthread.h>
#include <QtCore/qmutex.h>
#include <QtCore/qwaitcondition.h>
#include <private/qwidget_p.h>
#include <private/qgl_p.h>
QT_BEGIN_NAMESPACE
//Make it easy to identify and customize the root item if needed
class QSGRootItem : public QSGItem
{
Q_OBJECT
public:
QSGRootItem();
};
class QSGCanvasPrivate;
class QTouchEvent;
class QSGCanvasPrivate : public QGLWidgetPrivate
{
public:
Q_DECLARE_PUBLIC(QSGCanvas)
static inline QSGCanvasPrivate *get(QSGCanvas *c) { return c->d_func(); }
QSGCanvasPrivate();
virtual ~QSGCanvasPrivate();
void init(QSGCanvas *);
QSGRootItem *rootItem;
QSGItem *activeFocusItem;
QSGItem *mouseGrabberItem;
// Mouse positions are saved in widget coordinates
QPoint lastMousePosition;
QPoint buttonDownPositions[5]; // Left, Right, Middle, XButton1, XButton2
void sceneMouseEventFromMouseEvent(QGraphicsSceneMouseEvent &, QMouseEvent *);
void translateTouchEvent(QTouchEvent *touchEvent);
static QEvent::Type sceneMouseEventTypeFromMouseEvent(QMouseEvent *);
static void sceneMouseEventForTransform(QGraphicsSceneMouseEvent &, const QTransform &);
static void transformTouchPoints(QList<QTouchEvent::TouchPoint> &touchPoints, const QTransform &transform);
bool deliverInitialMousePressEvent(QSGItem *, QGraphicsSceneMouseEvent *);
bool deliverMouseEvent(QGraphicsSceneMouseEvent *);
bool sendFilteredMouseEvent(QSGItem *, QSGItem *, QGraphicsSceneMouseEvent *);
bool deliverWheelEvent(QSGItem *, QGraphicsSceneWheelEvent *);
bool deliverTouchPoints(QSGItem *, QTouchEvent *, const QList<QTouchEvent::TouchPoint> &, QSet<int> *,
QHash<QSGItem *, QList<QTouchEvent::TouchPoint> > *);
bool deliverTouchEvent(QTouchEvent *);
void sceneHoverEventFromMouseEvent(QGraphicsSceneHoverEvent &, QMouseEvent *);
bool deliverHoverEvent(QSGItem *, QGraphicsSceneHoverEvent *);
void sendHoverEvent(QEvent::Type, QSGItem *, QGraphicsSceneHoverEvent *);
void clearHover();
void stopRenderingThread();
QDeclarativeGuard<QSGItem> hoverItem;
enum FocusOption {
DontChangeFocusProperty = 0x01,
};
Q_DECLARE_FLAGS(FocusOptions, FocusOption)
void setFocusInScope(QSGItem *scope, QSGItem *item, FocusOptions = 0);
void clearFocusInScope(QSGItem *scope, QSGItem *item, FocusOptions = 0);
void notifyFocusChangesRecur(QSGItem **item, int remaining);
void updateInputMethodData();
void dirtyItem(QSGItem *);
void cleanup(QSGNode *);
void initializeSceneGraph();
void polishItems();
void syncSceneGraph();
void renderSceneGraph();
void runThread();
void _q_animationStarted();
void _q_animationStopped();
QSGItem::UpdatePaintNodeData updatePaintNodeData;
QSGItem *dirtyItemList;
QList<QSGNode *> cleanupNodeList;
QSet<QSGItem *> itemsToPolish;
void updateDirtyNodes();
void cleanupNodes();
bool updateEffectiveOpacity(QSGItem *);
void updateEffectiveOpacityRoot(QSGItem *, qreal);
void updateDirtyNode(QSGItem *);
QSGContext *context;
uint contextInThread : 1;
uint threadedRendering : 1;
uint exitThread : 1;
uint animationRunning: 1;
uint idle : 1; // Set to true when render thread sees no change and enters a wait()
uint needsRepaint : 1; // Set by callback from render if scene needs repainting.
uint renderThreadAwakened : 1;
uint inSync: 1;
struct MyThread : public QThread {
MyThread(QSGCanvasPrivate *r) : renderer(r) {}
virtual void run() { renderer->runThread(); }
static void doWait() { QThread::msleep(16); }
QSGCanvasPrivate *renderer;
};
MyThread *thread;
QMutex mutex;
QWaitCondition wait;
QSize widgetSize;
QSize viewportSize;
QAnimationDriver *animationDriver;
QHash<int, QSGItem *> itemForTouchPointId;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QSGCanvasPrivate::FocusOptions)
QT_END_NAMESPACE
#endif // QSGCANVAS_P_H
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