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/*
* LXImage-Qt - a simple and fast image viewer
* Copyright (C) 2013 PCMan <pcman.tw@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "saveimagejob.h"
#include "mainwindow.h"
#include <QImageReader>
#include <QBuffer>
#include <qvarlengtharray.h>
using namespace LxImage;
SaveImageJob::SaveImageJob(const QImage & image, const Fm::FilePath & filePath):
path_{filePath},
image_{image},
failed_{true}
{
}
SaveImageJob::~SaveImageJob() {
}
// This is called from the worker thread, not main thread
void SaveImageJob::exec() {
const Fm::CStrPtr f = path_.baseName();
char const * format = f.get();
format = strrchr(format, '.');
if(format) // use filename extension as the image format
++format;
QBuffer imageBuffer;
// save the image to buffer
if(!image_.save(&imageBuffer, format)) {
// do not create an empty file when the format is not supported
Fm::GErrorPtr err = Fm::GErrorPtr {
G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
tr("Cannot save with this image format!")
};
emitError(err, Fm::Job::ErrorSeverity::SEVERE);
return;
}
GFileOutputStream* fileStream = nullptr;
Fm::GErrorPtr error;
ErrorAction act = ErrorAction::RETRY;
while (act == ErrorAction::RETRY && !isCancelled())
{
error.reset();
if (nullptr == (fileStream = g_file_replace(path_.gfile().get(), nullptr, false, G_FILE_CREATE_NONE, cancellable().get(), &error)))
{
act = emitError(error);
continue;
}
// the file stream is successfually opened
if (!isCancelled())
{
GOutputStream* outputStream = G_OUTPUT_STREAM(fileStream);
g_output_stream_write_all(outputStream,
imageBuffer.data().constData(),
imageBuffer.size(),
nullptr,
cancellable().get(),
&error);
g_output_stream_close(outputStream, nullptr, nullptr);
if (!error)
{
// successfully written
failed_ = false;
break; // successfully written
}
act = emitError(error);
}
}
}
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