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contextattributes.cpp 8.38 KiB
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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtCanvas3D module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.  For licensing terms and
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** conditions see http://qt.digia.com/licensing.  For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPLv3 included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or later as published by the Free
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** Software Foundation and appearing in the file LICENSE.GPL included in
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** the packaging of this file.  Please review the following information to
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** ensure the GNU General Public License version 2.0 requirements will be
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** met: http://www.gnu.org/licenses/gpl-2.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "contextattributes_p.h"
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#include <QVariantMap>
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#include <QDebug>
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/*!
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 * \qmltype ContextAttributes
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 * \since QtCanvas3D 1.0
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 * \ingroup qtcanvas3d-qml-types
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 * \brief Attribute set for Context3D
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 *
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 * ContextAttributes is an attribute set that can be given as parameter on first call to
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 * Canvas3D object's \l{Canvas3D::getContext()}{getContext(string type, ContextAttributes options)}
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 * method call. It can also be requested from the Context3D later on to verify what exact
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 * attributes are in fact enabled/disabled in the created context.
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 *
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 * \sa Context3D, Canvas3D, {QML Canvas 3D QML Types}
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 */
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/*!
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 * \internal
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 */
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CanvasContextAttributes::CanvasContextAttributes(QObject *parent) :
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    CanvasAbstractObject(parent),
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    m_alpha(false),  // Should be true according to official WebGL spec. But ignored for now.
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    m_depth(false),
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    m_stencil(false),
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    m_antialias(false),
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    m_premultipliedAlpha(false),
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    m_preserveDrawingBuffer(false),
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    m_preferLowPowerToHighPerformance(false),
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    m_failIfMajorPerformanceCaveat(false)
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{
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}
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/*! * \internal */ CanvasContextAttributes::~CanvasContextAttributes() { } /*! * \internal */ void CanvasContextAttributes::setFrom(const QVariantMap &options) { for (QVariantMap::const_iterator iter = options.begin(); iter != options.end(); ++iter) { if (iter.key() == "alpha") setAlpha(iter.value().toBool()); else if (iter.key() == "depth") setDepth(iter.value().toBool()); else if (iter.key() == "stencil") setStencil(iter.value().toBool()); else if (iter.key() == "antialias") setAntialias(iter.value().toBool()); else if (iter.key() == "premultipliedAlpha") setPremultipliedAlpha(iter.value().toBool()); else if (iter.key() == "preserveDrawingBuffer") setPreserveDrawingBuffer(iter.value().toBool()); else if (iter.key() == "preferLowPowerToHighPerformance") setPreferLowPowerToHighPerformance(iter.value().toBool()); else if (iter.key() == "failIfMajorPerformanceCaveat") setFailIfMajorPerformanceCaveat(iter.value().toBool()); } } /*! * \internal */ void CanvasContextAttributes::setFrom(const CanvasContextAttributes &source) { m_alpha = source.alpha(); m_depth = source.depth(); m_stencil = source.stencil(); m_antialias = source.antialias(); m_premultipliedAlpha = source.premultipliedAlpha(); m_preserveDrawingBuffer = source.preserveDrawingBuffer(); m_preferLowPowerToHighPerformance = source.preferLowPowerToHighPerformance(); m_failIfMajorPerformanceCaveat = source.failIfMajorPerformanceCaveat(); } /*! * \qmlproperty bool ContextAttributes::alpha * Ignored. Defaults to \c{false}. */ bool CanvasContextAttributes::alpha() const { return m_alpha; } void CanvasContextAttributes::setAlpha(bool value) { if (m_alpha == value) return; m_alpha = value; emit alphaChanged(value); } /*! * \qmlproperty bool ContextAttributes::depth * Specifies whether a depth attachment is to be created and attached to the default render target * of the Context3D.
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* Defaults to \c{false}. */ bool CanvasContextAttributes::depth() const { return m_depth; } void CanvasContextAttributes::setDepth(bool value) { if (m_depth == value) return; m_depth = value; emit depthChanged(value); } /*! * \qmlproperty bool ContextAttributes::stencil * Specifies whether a stencil attachment is to be created and attached to the default render * target of the Context3D. * Defaults to \c{false}. */ bool CanvasContextAttributes::stencil() const { return m_stencil; } void CanvasContextAttributes::setStencil(bool value) { if (m_stencil == value) return; m_stencil = value; emit stencilChanged(value); } /*! * \qmlproperty bool ContextAttributes::antialias * Specifies whether antialiasing buffer is created for the default render target of the Context3D. * Defaults to \c{false}. */ bool CanvasContextAttributes::antialias() const { return m_antialias; } void CanvasContextAttributes::setAntialias(bool value) { if (m_antialias == value) return; m_antialias = value; emit antialiasChanged(value); } /*! * \qmlproperty bool ContextAttributes::premultipliedAlpha * Ignored. Defaults to \c{false}. */ bool CanvasContextAttributes::premultipliedAlpha() const { return m_premultipliedAlpha; } void CanvasContextAttributes::setPremultipliedAlpha(bool value) { if (m_premultipliedAlpha == value) return; m_premultipliedAlpha = value;
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emit premultipliedAlphaChanged(value); } /*! * \qmlproperty bool ContextAttributes::preserveDrawingBuffer * Ignored. Defaults to \c{false}. */ bool CanvasContextAttributes::preserveDrawingBuffer() const { return m_preserveDrawingBuffer; } void CanvasContextAttributes::setPreserveDrawingBuffer(bool value) { if (m_preserveDrawingBuffer == value) return; m_preserveDrawingBuffer = value; emit preserveDrawingBufferChanged(value); } /*! * \qmlproperty bool ContextAttributes::preferLowPowerToHighPerformance * Ignored. Defaults to \c{false}. */ bool CanvasContextAttributes::preferLowPowerToHighPerformance() const { return m_preferLowPowerToHighPerformance; } void CanvasContextAttributes::setPreferLowPowerToHighPerformance(bool value) { if (m_preferLowPowerToHighPerformance == value) return; m_preferLowPowerToHighPerformance = value; emit preferLowPowerToHighPerformanceChanged(value); } /*! * \qmlproperty bool ContextAttributes::failIfMajorPerformanceCaveat * Ignored. Defaults to \c{false}. */ bool CanvasContextAttributes::failIfMajorPerformanceCaveat() const { return m_failIfMajorPerformanceCaveat; } void CanvasContextAttributes::setFailIfMajorPerformanceCaveat(bool value) { if (m_failIfMajorPerformanceCaveat == value) return; m_failIfMajorPerformanceCaveat = value; emit failIfMajorPerformanceCaveatChanged(value); } /*! * \internal */ QDebug operator<<(QDebug dbg, const CanvasContextAttributes &attribs) { dbg.nospace() << "ContextAttributes(\n alpha:"<< attribs.m_alpha << "\n depth:" << attribs.m_depth << "\n m_stencil:" << attribs.m_stencil << "\n antialias:"<< attribs.m_antialias << "\n premultipliedAlpha:" << attribs.m_premultipliedAlpha << "\n preserveDrawingBuffer:" << attribs.m_preserveDrawingBuffer << "\n preferLowPowerToHighPerformance:" << attribs.m_preferLowPowerToHighPerformance << "\n failIfMajorPerformanceCaveat:" << attribs.m_failIfMajorPerformanceCaveat << ")";
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return dbg.maybeSpace(); }