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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the TGA plugin in the Qt ImageFormats module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
#include "qtgahandler.h"
#include "qtgafile.h"
#include <QtCore/QVariant>
#include <QtCore/QDebug>
#include <QtGui/QImage>
QT_BEGIN_NAMESPACE
QTgaHandler::QTgaHandler()
: QImageIOHandler()
, tga(0)
{
}
QTgaHandler::~QTgaHandler()
{
delete tga;
}
bool QTgaHandler::canRead() const
{
if (!tga)
tga = new QTgaFile(device());
if (tga->isValid())
{
setFormat("tga");
return true;
}
qWarning("QTgaHandler::canRead(): %s", qPrintable(tga->errorMessage()));
return false;
}
bool QTgaHandler::canRead(QIODevice *device)
{
if (!device) {
qWarning("QTgaHandler::canRead() called with no device");
return false;
}
// TGA reader implementation needs a seekable QIODevice, so
// sequential devices are not supported
if (device->isSequential())
return false;
qint64 pos = device->pos();
bool isValid;
{
QTgaFile tga(device);
isValid = tga.isValid();
}
device->seek(pos);
return isValid;
}
bool QTgaHandler::read(QImage *image)
{
if (!canRead())
return false;
*image = tga->readImage();
return !image->isNull();
}
QVariant QTgaHandler::option(ImageOption option) const
{
if (option == Size && canRead()) {
return tga->size();
} else if (option == CompressionRatio) {
return tga->compression();
} else if (option == ImageFormat) {
return QImage::Format_ARGB32;
}
return QVariant();
}
void QTgaHandler::setOption(ImageOption option, const QVariant &value)
{
Q_UNUSED(option);
Q_UNUSED(value);
}
bool QTgaHandler::supportsOption(ImageOption option) const
{
return option == CompressionRatio
|| option == Size
|| option == ImageFormat;
}
QT_END_NAMESPACE
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