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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 Qt scene graph research project.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 UTILITIES_H
#define UTILITIES_H
#include "qgltexture2d.h"
#include "areaallocator.h"
#include "adaptationinterfaces.h"
#include "qmlscene_global.h"
#include <QtCore/QSharedPointer>
#include <QtGui/QColor>
class TextMaskMaterial;
class FlatColorMaterial;
class VertexColorMaterial;
class Geometry;
class Renderer;
class QPixmap;
class QImage;
class QSize;
class QFontEngine;
class QRectF;
class SubTexture2D
{
public:
SubTexture2D(TextureAtlasInterface *atlas, const QRect &allocatedRect);
SubTexture2D(const QGLTexture2DConstPtr &texture);
~SubTexture2D();
bool hasOwnTexture() const { return m_source.right() == 1; }
bool isValid() const { return hasOwnTexture() || !m_allocated.isNull(); }
QRectF sourceRect() const { return m_source; }
QGLTexture2DConstPtr texture() const { return m_texture; }
private:
QRect m_allocated;
QRectF m_source;
TextureAtlasInterface *m_atlas;
QGLTexture2DConstPtr m_texture;
};
typedef QSharedPointer<const SubTexture2D> SubTexture2DConstPtr;
typedef QSharedPointer<SubTexture2D> SubTexture2DPtr;
class QT_SCENEGRAPH_EXPORT Utilities
{
public:
static SubTexture2DPtr getTextureForImage(const QImage &image, bool clampToEdge, bool dynamic = true);
static SubTexture2DPtr getTextureForPixmap(const QPixmap &pixmap, bool clampToEdge, bool dynamic = true);
static void setupRectGeometry(Geometry *geometry, const QRectF &rect, const QSize &textureSize = QSize(), const QRectF &sourceRect = QRectF());
static QVector<QGLAttributeDescription> &getRectGeometryDescription();
static QVector<QGLAttributeDescription> &getTexturedRectGeometryDescription();
static QVector<QGLAttributeDescription> &getColoredRectGeometryDescription();
static Geometry *createRectGeometry(const QRectF &rect);
static Geometry *createTexturedRectGeometry(const QRectF &rect, const QSize &textureSize, const QRectF &sourceRect);
static QColor mix(const QColor &c1, const QColor c2, qreal factor) {
qreal inv = 1 - factor;
return QColor::fromRgbF(c1.redF() * factor + c2.redF() * inv,
c1.greenF() * factor + c2.greenF() * inv,
c1.blueF() * factor + c2.blueF() * inv,
c1.alphaF() * factor + c2.alphaF() * inv);
}
};
#endif // UTILITIES_H
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