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// Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qopenglpixeltransferoptions.h"
#include <QSharedData>
QT_BEGIN_NAMESPACE
/*!
* \class QOpenGLPixelTransferOptions
* \inmodule QtOpenGL
*
* \brief The QOpenGLPixelTransferOptions class describes the pixel storage
* modes that affect the unpacking of pixels during texture upload.
*/
/*!
* \fn QOpenGLPixelTransferOptions & QOpenGLPixelTransferOptions::operator=(QOpenGLPixelTransferOptions &&other)
* \internal
*/
/*!
* \fn void QOpenGLPixelTransferOptions::swap(QOpenGLPixelTransferOptions &other)
* \internal
*/
class QOpenGLPixelTransferOptionsData : public QSharedData
{
public:
QOpenGLPixelTransferOptionsData()
: alignment(4)
, skipImages(0)
, skipRows(0)
, skipPixels(0)
, imageHeight(0)
, rowLength(0)
, lsbFirst(false)
, swapBytes(false)
{}
int alignment;
int skipImages;
int skipRows;
int skipPixels;
int imageHeight;
int rowLength;
bool lsbFirst;
bool swapBytes;
};
/*!
* Constructs a new QOpenGLPixelTransferOptions instance with the default settings.
*/
QOpenGLPixelTransferOptions::QOpenGLPixelTransferOptions()
: data(new QOpenGLPixelTransferOptionsData)
{
}
/*!
* \internal
*/
QOpenGLPixelTransferOptions::QOpenGLPixelTransferOptions(const QOpenGLPixelTransferOptions &rhs)
: data(rhs.data)
{
}
/*!
* \internal
*/
QOpenGLPixelTransferOptions &QOpenGLPixelTransferOptions::operator=(const QOpenGLPixelTransferOptions &rhs)
{
if (this != &rhs)
data.operator=(rhs.data);
return *this;
}
/*!
* Destructor.
*/
QOpenGLPixelTransferOptions::~QOpenGLPixelTransferOptions()
{
}
/*!
* Sets the \a alignment requirements for each pixel row. Corresponds to \c GL_UNPACK_ALIGNMENT.
* The default value is 4, as specified by OpenGL.
*/
void QOpenGLPixelTransferOptions::setAlignment(int alignment)
{
data->alignment = alignment;
}
/*!
* \return the current alignment requirement for each pixel row.
*/
int QOpenGLPixelTransferOptions::alignment() const
{
return data->alignment;
}
/*!
* Sets the number of images that are skipped to \a skipImages.
* Corresponds to \c GL_UNPACK_SKIP_IMAGES. Equivalent to incrementing the pointer
* passed to QOpenGLTexture::setData(). The default value is 0.
*/
void QOpenGLPixelTransferOptions::setSkipImages(int skipImages)
{
data->skipImages = skipImages;
}
/*!
* \return the number of images that are skipped.
*/
int QOpenGLPixelTransferOptions::skipImages() const
{
return data->skipImages;
}
/*!
* Sets the number of rows that are skipped to \a skipRows.
* Corresponds to \c GL_UNPACK_SKIP_ROWS. Equivalent to incrementing the pointer
* passed to QOpenGLTexture::setData(). The default value is 0.
*/
void QOpenGLPixelTransferOptions::setSkipRows(int skipRows)
{
data->skipRows = skipRows;
}
/*!
* \return the number of rows that are skipped.
*/
int QOpenGLPixelTransferOptions::skipRows() const
{
return data->skipRows;
}
/*!
* Sets the number of pixels that are skipped to \a skipPixels.
* Corresponds to \c GL_UNPACK_SKIP_PIXELS. Equivalent to incrementing the pointer
* passed to QOpenGLTexture::setData(). The default value is 0.
*/
void QOpenGLPixelTransferOptions::setSkipPixels(int skipPixels)
{
data->skipPixels = skipPixels;
}
/*!
* \return the number of pixels that are skipped.
*/
int QOpenGLPixelTransferOptions::skipPixels() const
{
return data->skipPixels;
}
/*!
* Sets the image height for 3D textures to \a imageHeight.
* Corresponds to \c GL_UNPACK_IMAGE_HEIGHT.
* The default value is 0.
*/
void QOpenGLPixelTransferOptions::setImageHeight(int imageHeight)
{
data->imageHeight = imageHeight;
}
/*!
* \return the currently set image height.
*/
int QOpenGLPixelTransferOptions::imageHeight() const
{
return data->imageHeight;
}
/*!
* Sets the number of pixels in a row to \a rowLength.
* Corresponds to \c GL_UNPACK_ROW_LENGTH.
* The default value is 0.
*/
void QOpenGLPixelTransferOptions::setRowLength(int rowLength)
{
data->rowLength = rowLength;
}
/*!
* \return the currently set row length.
*/
int QOpenGLPixelTransferOptions::rowLength() const
{
return data->rowLength;
}
/*!
* \a lsbFirst specifies if bits within a byte are ordered from least to most significat.
* The default value is \c false, meaning that the first bit in each byte is the
* most significant one. This is significant for bitmap data only.
* Corresponds to \c GL_UNPACK_LSB_FIRST.
*/
void QOpenGLPixelTransferOptions::setLeastSignificantByteFirst(bool lsbFirst)
{
data->lsbFirst = lsbFirst;
}
/*!
* \return \c true if bits within a byte are ordered from least to most significant.
*/
bool QOpenGLPixelTransferOptions::isLeastSignificantBitFirst() const
{
return data->lsbFirst;
}
/*!
* \a swapBytes specifies if the byte ordering for multibyte components is reversed.
* The default value is \c false.
* Corresponds to \c GL_UNPACK_SWAP_BYTES.
*/
void QOpenGLPixelTransferOptions::setSwapBytesEnabled(bool swapBytes)
{
data->swapBytes = swapBytes;
}
/*!
* \return \c true if the byte ordering for multibyte components is reversed.
*/
bool QOpenGLPixelTransferOptions::isSwapBytesEnabled() const
{
return data->swapBytes;
}
QT_END_NAMESPACE
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