diff options
Diffstat (limited to 'src/threed/graphicsview/qglgraphicsviewportitem.cpp')
| -rw-r--r-- | src/threed/graphicsview/qglgraphicsviewportitem.cpp | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/src/threed/graphicsview/qglgraphicsviewportitem.cpp b/src/threed/graphicsview/qglgraphicsviewportitem.cpp deleted file mode 100644 index c99b695e..00000000 --- a/src/threed/graphicsview/qglgraphicsviewportitem.cpp +++ /dev/null @@ -1,365 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation ([email protected]) -** -** This file is part of the QtQuick3D 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. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qglgraphicsviewportitem.h" -#include "qglpainter.h" -#include "qglsubsurface.h" -#include <QtGui/qpainter.h> -#include <QtGui/qgraphicsscene.h> - -QT_BEGIN_NAMESPACE - -/*! - \class QGLGraphicsViewportItem - \brief The QGLGraphicsViewportItem class provides a rectangular viewport for arbitrary OpenGL painting. - \since 4.8 - \ingroup qt3d - \ingroup qt3d::graphicsview -*/ - -class QGLGraphicsViewportItemPrivate : public QObject -{ - Q_OBJECT -public: - QGLGraphicsViewportItemPrivate(QGLGraphicsViewportItem *item) - : q(item) - { - defaultCamera = camera = new QGLCamera(this); - connect(camera, SIGNAL(projectionChanged()), - this, SLOT(cameraChanged())); - connect(camera, SIGNAL(viewChanged()), - this, SLOT(cameraChanged())); - } - - void changeCamera(QGLCamera *c); - void setDefaults(QGLPainter *painter); - - QGLGraphicsViewportItem *q; - QRectF rect; - QGLCamera *camera; - QGLCamera *defaultCamera; - QColor backgroundColor; - -private Q_SLOTS: - void cameraChanged(); -}; - -void QGLGraphicsViewportItemPrivate::changeCamera(QGLCamera *c) -{ - disconnect(camera, SIGNAL(projectionChanged()), - this, SLOT(cameraChanged())); - disconnect(camera, SIGNAL(viewChanged()), - this, SLOT(cameraChanged())); - camera = c; - connect(camera, SIGNAL(projectionChanged()), - this, SLOT(cameraChanged())); - connect(camera, SIGNAL(viewChanged()), - this, SLOT(cameraChanged())); -} - -void QGLGraphicsViewportItemPrivate::cameraChanged() -{ - q->update(); -} - -void QGLGraphicsViewportItemPrivate::setDefaults(QGLPainter *painter) -{ - // Set the default depth buffer options. - glDepthFunc(GL_LESS); - glDepthMask(GL_TRUE); -#if defined(QT_OPENGL_ES) - glDepthRangef(0.0f, 1.0f); -#else - glDepthRange(0.0f, 1.0f); -#endif - - // Set the default blend options. - glDisable(GL_BLEND); - if (painter->hasOpenGLFeature(QOpenGLFunctions::BlendColor)) - painter->glBlendColor(0, 0, 0, 0); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - if (painter->hasOpenGLFeature(QOpenGLFunctions::BlendEquation)) - painter->glBlendEquation(GL_FUNC_ADD); - else if (painter->hasOpenGLFeature(QOpenGLFunctions::BlendEquationSeparate)) - painter->glBlendEquationSeparate(GL_FUNC_ADD, GL_FUNC_ADD); -} - -/*! - Constructs a new GL graphics viewport and attaches it to \a parent. -*/ -QGLGraphicsViewportItem::QGLGraphicsViewportItem(QGraphicsItem *parent) - : QGraphicsItem(parent), d_ptr(new QGLGraphicsViewportItemPrivate(this)) -{ -} - -/*! - Constructs a new GL graphics viewport and attaches it to \a parent. - The boundingRect() is initially set to \a rect. -*/ -QGLGraphicsViewportItem::QGLGraphicsViewportItem(const QRectF& rect, QGraphicsItem *parent) - : QGraphicsItem(parent), d_ptr(new QGLGraphicsViewportItemPrivate(this)) -{ - d_ptr->rect = rect; -} - -/*! - Constructs a new GL graphics viewport and attaches it to \a parent. - The boundingRect() is initially set to (\a x, \a y, \a w, \a h). -*/ -QGLGraphicsViewportItem::QGLGraphicsViewportItem - (qreal x, qreal y, qreal w, qreal h, QGraphicsItem *parent) - : QGraphicsItem(parent), d_ptr(new QGLGraphicsViewportItemPrivate(this)) -{ - d_ptr->rect = QRectF(x, y, w, h); -} - -/*! - Destroys this GL graphics viewport. -*/ -QGLGraphicsViewportItem::~QGLGraphicsViewportItem() -{ -} - -/*! - Returns the rectangular area of the view that is occupied by - this GL graphics viewport. - - \sa setRect(), boundingRect() -*/ -QRectF QGLGraphicsViewportItem::rect() const -{ - Q_D(const QGLGraphicsViewportItem); - return d->rect; -} - -/*! - Sets the rectangular area of the view that is occupied by - this GL graphics viewport to \a rect. - - \sa rect(), boundingRect() -*/ -void QGLGraphicsViewportItem::setRect(const QRectF &rect) -{ - Q_D(QGLGraphicsViewportItem); - if (d->rect == rect) - return; - prepareGeometryChange(); - d->rect = rect; - update(); -} - -/*! - \fn void QGLGraphicsViewportItem::setRect(qreal x, qreal y, qreal w, qreal h) - \overload - - Sets the rectangular area of the view that is occupied by - this GL graphics viewport to (\a x, \a y, \a w, \a h). - - \sa rect(), boundingRect() -*/ - -/*! - Returns the bounding rectangle for this GL graphics viewport, - which is the same as rect(). - - \sa rect() -*/ -QRectF QGLGraphicsViewportItem::boundingRect() const -{ - Q_D(const QGLGraphicsViewportItem); - return d->rect; -} - -/*! - Returns the camera parameters. The camera defines the projection - to apply to convert eye co-ordinates into window co-ordinates, - and the position and orientation of the viewer's eye. - - This item will be updated whenever the camera's parameters change. - - \sa setCamera() -*/ -QGLCamera *QGLGraphicsViewportItem::camera() const -{ - Q_D(const QGLGraphicsViewportItem); - return d->camera; -} - -/*! - Sets the camera parameters to \a camera. The camera defines the - projection to apply to convert eye co-ordinates into window - co-ordinates, and the position and orientation of the viewer's eye. - - If \a camera is null, then the default camera object will be used. - - This function will call update() to force the viewport to update - with the new camera parameters upon the next event loop. Afterwards, - this item will be updated whenever the camera's parameters change. - - \sa camera() -*/ -void QGLGraphicsViewportItem::setCamera(QGLCamera *camera) -{ - Q_D(QGLGraphicsViewportItem); - if (!camera) - camera = d->defaultCamera; - if (d->camera != camera) { - d->changeCamera(camera); - update(); - } -} - -/*! - Returns the background color, which is used to clear the viewport - before calling paintGL(). The default value is an invalid QColor, - which indicates that the viewport should not be cleared. - - \sa setBackgroundColor() -*/ -QColor QGLGraphicsViewportItem::backgroundColor() const -{ - Q_D(const QGLGraphicsViewportItem); - return d->backgroundColor; -} - -/*! - Sets the background \a color, which is used to clear the viewport - before calling paintGL(). - - \sa backgroundColor() -*/ -void QGLGraphicsViewportItem::setBackgroundColor(const QColor& color) -{ - Q_D(QGLGraphicsViewportItem); - d->backgroundColor = color; -} - -/*! - Paints this GL graphics viewport onto \a painter, with the specified - \a option and \a widget parameters. - - This override creates a QGLPainter for \a painter and passes - it to paintGL(). - - \sa paintGL() -*/ -void QGLGraphicsViewportItem::paint - (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) -{ - Q_D(QGLGraphicsViewportItem); - - Q_UNUSED(option); - Q_UNUSED(widget); - - if (d->rect.isEmpty()) - return; - - // Initialize a QGLPainter for the surface and bail out if not active. - QGLPainter glpainter; - if (!glpainter.begin(painter)) { - qWarning("GL graphics system is not active; cannot use 3D items"); - return; - } - - // Set up the GL viewport to limit drawing to the bounds of this item. - QRect viewport = painter->deviceTransform().mapRect(rect()).toRect(); - QGLSubsurface surface(glpainter.currentSurface(), viewport); - glpainter.pushSurface(&surface); - - // Set up the desired drawing options. - glDisable(GL_CULL_FACE); - d->setDefaults(&glpainter); - if (d->backgroundColor.isValid()) { - // We clear the background by drawing a triangle fan so - // that the background color will blend with the underlying - // screen content if it has an alpha component. - glDisable(GL_DEPTH_TEST); - if (d->backgroundColor.alpha() != 255) - glEnable(GL_BLEND); - else - glDisable(GL_BLEND); - QVector2DArray array; - array.append(-1, -1); - array.append(1, -1); - array.append(1, 1); - array.append(-1, 1); - glpainter.projectionMatrix().setToIdentity(); - glpainter.modelViewMatrix().setToIdentity(); - glpainter.setStandardEffect(QGL::FlatColor); - glpainter.setColor(d->backgroundColor); - glpainter.setVertexAttribute(QGL::Position, array); - glpainter.draw(QGL::TriangleFan, 4); - } - glClear(GL_DEPTH_BUFFER_BIT); - glEnable(GL_DEPTH_TEST); - glDisable(GL_BLEND); - - // Apply the camera. - glpainter.setEye(QGL::NoEye); - glpainter.setCamera(d->camera); - - // Paint the GL contents. - paintGL(&glpainter); - - // Disable the current drawing effect so that QGLPainter will - // forcibly update the GL context the next time QGLPainter is used. - glpainter.disableEffect(); - - // Try to restore the GL state to something paint-engine compatible. - glDisable(GL_CULL_FACE); - d->setDefaults(&glpainter); - glDisable(GL_DEPTH_TEST); - - glpainter.popSurface(); -} - -/*! - \fn void QGLGraphicsViewportItem::paintGL(QGLPainter *painter) - - Paints this GL graphics viewport onto \a painter. This function is called - from paint(). - - \sa paint() -*/ - -QT_END_NAMESPACE - -#include "qglgraphicsviewportitem.moc" |