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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.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** 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.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QQUICKCANVAS_P_H
-#define QQUICKCANVAS_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 "qquickitem.h"
-#include "qquickcanvas.h"
-#include <private/qdeclarativeguard_p.h>
-
-#include <private/qsgcontext_p.h>
-#include <private/qquickdrag_p.h>
-
-#include <QtCore/qthread.h>
-#include <QtCore/qmutex.h>
-#include <QtCore/qwaitcondition.h>
-#include <private/qwindow_p.h>
-#include <private/qopengl_p.h>
-#include <qopenglcontext.h>
-#include <QtGui/qopenglframebufferobject.h>
-#include <QtGui/qevent.h>
-#include <QtGui/qinputpanel.h>
-
-QT_BEGIN_NAMESPACE
-
-//Make it easy to identify and customize the root item if needed
-
-class QQuickRootItem : public QQuickItem
-{
- Q_OBJECT
-public:
- QQuickRootItem();
-public Q_SLOTS:
- void setWidth(int w) {QQuickItem::setWidth(qreal(w));}
- void setHeight(int h) {QQuickItem::setHeight(qreal(h));}
-};
-
-class QQuickItemPrivate;
-class QQuickCanvasPrivate;
-
-class QTouchEvent;
-class QQuickCanvasRenderLoop;
-class QQuickCanvasIncubationController;
-
-class QQuickCanvasPrivate : public QWindowPrivate
-{
-public:
- Q_DECLARE_PUBLIC(QQuickCanvas)
-
- static inline QQuickCanvasPrivate *get(QQuickCanvas *c) { return c->d_func(); }
-
- QQuickCanvasPrivate();
- virtual ~QQuickCanvasPrivate();
-
- void init(QQuickCanvas *);
- void initRootItem();//Currently only used if items added in QML
-
- QQuickRootItem *rootItem;
- QDeclarativeListProperty<QObject> data();
-
- QQuickItem *activeFocusItem;
- QQuickItem *mouseGrabberItem;
- QQuickDragGrabber dragGrabber;
-
- // Mouse positions are saved in widget coordinates
- QPointF lastMousePosition;
- void translateTouchEvent(QTouchEvent *touchEvent);
- static void transformTouchPoints(QList<QTouchEvent::TouchPoint> &touchPoints, const QTransform &transform);
- bool deliverInitialMousePressEvent(QQuickItem *, QMouseEvent *);
- bool deliverMouseEvent(QMouseEvent *);
- bool sendFilteredMouseEvent(QQuickItem *, QQuickItem *, QEvent *);
- bool deliverWheelEvent(QQuickItem *, QWheelEvent *);
- bool deliverTouchPoints(QQuickItem *, QTouchEvent *, const QList<QTouchEvent::TouchPoint> &, QSet<int> *,
- QHash<QQuickItem *, QList<QTouchEvent::TouchPoint> > *);
- bool deliverTouchEvent(QTouchEvent *);
- bool deliverHoverEvent(QQuickItem *, const QPointF &scenePos, const QPointF &lastScenePos, Qt::KeyboardModifiers modifiers, bool &accepted);
- bool sendHoverEvent(QEvent::Type, QQuickItem *, const QPointF &scenePos, const QPointF &lastScenePos,
- Qt::KeyboardModifiers modifiers, bool accepted);
- bool clearHover();
- void deliverDragEvent(QQuickDragGrabber *, QEvent *);
- bool deliverDragEvent(QQuickDragGrabber *, QQuickItem *, QDragMoveEvent *);
-
- QList<QQuickItem*> hoverItems;
- enum FocusOption {
- DontChangeFocusProperty = 0x01,
- };
- Q_DECLARE_FLAGS(FocusOptions, FocusOption)
-
- void setFocusInScope(QQuickItem *scope, QQuickItem *item, FocusOptions = 0);
- void clearFocusInScope(QQuickItem *scope, QQuickItem *item, FocusOptions = 0);
- void notifyFocusChangesRecur(QQuickItem **item, int remaining);
-
- void updateInputMethodData();
- void updateFocusItemTransform();
-
- void dirtyItem(QQuickItem *);
- void cleanup(QSGNode *);
-
- void initializeSceneGraph();
- void polishItems();
- void syncSceneGraph();
- void renderSceneGraph(const QSize &size);
-
- QQuickItem::UpdatePaintNodeData updatePaintNodeData;
-
- QQuickItem *dirtyItemList;
- QList<QSGNode *> cleanupNodeList;
-
- QSet<QQuickItem *> itemsToPolish;
-
- void updateDirtyNodes();
- void cleanupNodes();
- void cleanupNodesOnShutdown();
- bool updateEffectiveOpacity(QQuickItem *);
- void updateEffectiveOpacityRoot(QQuickItem *, qreal);
- void updateDirtyNode(QQuickItem *);
-
- QSGEngine *engine;
- QSGContext *context;
- QColor clearColor;
-
- uint vsyncAnimations : 1;
- uint clearBeforeRendering : 1;
-
- QQuickCanvasRenderLoop *thread;
- QSize widgetSize;
- QSize viewportSize;
-
- QAnimationDriver *animationDriver;
-
- QOpenGLFramebufferObject *renderTarget;
-
- QHash<int, QQuickItem *> itemForTouchPointId;
-
- mutable QQuickCanvasIncubationController *incubationController;
-
-private:
- static void cleanupNodesOnShutdown(QQuickItem *);
-};
-
-class QQuickCanvasRenderLoop
-{
-public:
- QQuickCanvasRenderLoop()
- : d(0)
- , renderer(0)
- , gl(0)
- {
- }
- virtual ~QQuickCanvasRenderLoop()
- {
- delete gl;
- }
-
- friend class QQuickCanvasPrivate;
-
- virtual void paint() = 0;
- virtual void resize(const QSize &size) = 0;
- virtual void startRendering() = 0;
- virtual void stopRendering() = 0;
- virtual QImage grab() = 0;
- virtual void setWindowSize(const QSize &size) = 0;
- virtual void maybeUpdate() = 0;
- virtual bool isRunning() const = 0;
- virtual void animationStarted() = 0;
- virtual void animationStopped() = 0;
- virtual void moveContextToThread(QSGContext *) { }
- virtual bool *allowMainThreadProcessing() { return 0; }
-
-protected:
- void initializeSceneGraph() { d->initializeSceneGraph(); }
- void syncSceneGraph() { d->syncSceneGraph(); }
- void cleanupNodesOnShutdown() { d->cleanupNodesOnShutdown(); }
- void renderSceneGraph(const QSize &size) { d->renderSceneGraph(size); }
- void polishItems() { d->polishItems(); }
- QAnimationDriver *animationDriver() const { return d->animationDriver; }
-
- inline QOpenGLContext *glContext() const { return gl; }
- void createGLContext();
- void makeCurrent() { gl->makeCurrent(renderer); }
- void doneCurrent() { gl->doneCurrent(); }
- void swapBuffers() {
- gl->swapBuffers(renderer);
- emit renderer->frameSwapped();
- }
-
-private:
- QQuickCanvasPrivate *d;
- QQuickCanvas *renderer;
-
- QOpenGLContext *gl;
-};
-
-class QQuickCanvasRenderThread : public QThread, public QQuickCanvasRenderLoop
-{
- Q_OBJECT
-public:
- QQuickCanvasRenderThread()
- : mutex(QMutex::NonRecursive)
- , allowMainThreadProcessingFlag(true)
- , animationRunning(false)
- , isGuiBlocked(0)
- , isPaintCompleted(false)
- , isGuiBlockPending(false)
- , isRenderBlocked(false)
- , isExternalUpdatePending(false)
- , syncAlreadyHappened(false)
- , inSync(false)
- , doGrab(false)
- , shouldExit(false)
- , hasExited(false)
- , renderThreadAwakened(false)
- {}
-
- inline void lock() { mutex.lock(); }
- inline void unlock() { mutex.unlock(); }
- inline void wait() { condition.wait(&mutex); }
- inline void wake() { condition.wakeOne(); }
-
- void lockInGui();
- void unlockInGui();
-
- void paint();
- void resize(const QSize &size);
- void startRendering();
- void stopRendering();
- void exhaustSyncEvent();
- void sync(bool guiAlreadyLocked);
- bool isRunning() const { return QThread::isRunning(); }
- void setWindowSize(const QSize &size) { windowSize = size; }
- void maybeUpdate();
- void moveContextToThread(QSGContext *c) { c->moveToThread(this); }
- bool *allowMainThreadProcessing() { return &allowMainThreadProcessingFlag; }
-
- bool event(QEvent *);
-
- QImage grab();
-
-public slots:
- void animationStarted();
- void animationStopped();
-
-public:
- QMutex mutex;
- QWaitCondition condition;
-
- bool allowMainThreadProcessingFlag;
-
- QSize windowSize;
- QSize renderedSize;
-
- uint animationRunning: 1;
- int isGuiBlocked;
- uint isPaintCompleted : 1;
- uint isGuiBlockPending : 1;
- uint isRenderBlocked : 1;
- uint isExternalUpdatePending : 1;
- uint syncAlreadyHappened : 1;
- uint inSync : 1;
- uint doGrab : 1;
- uint shouldExit : 1;
- uint hasExited : 1;
- uint renderThreadAwakened : 1;
-
- QImage grabContent;
-
- void run();
-};
-
-Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickCanvasPrivate::FocusOptions)
-
-QT_END_NAMESPACE
-
-#endif // QQUICKCANVAS_P_H
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