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//
// C++ Implementation: gifwriter
//
// Description:
//
//
// Author: Thibaut GRIDEL <tgridel@free.fr>
//
// Copyright (c) 2009 Thibaut GRIDEL
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
//
//
#include "gifwriter.h"
#include <QImage>
#include <QColor>
#include <QtCore>
GifWriter::GifWriter() {
}
int GifWriter::writeData(const GifByteType *bytes, int size) {
return device()->write((char *)bytes, size);
}
static int myOutputFunc(GifFileType * fileType, const GifByteType * bytes, int size) {
GifWriter *writer = reinterpret_cast<GifWriter*>(fileType->UserData);
return writer->writeData(bytes, size);
}
bool GifWriter::write(QList<QImage*> imageList) {
GifFileType *fileType;
int retrn;
QImage *image = imageList.first();
fileType = EGifOpen((void*) this, myOutputFunc);
EGifSetGifVersion("89a");
int colors = 256;
ColorMapObject * cmap = MakeMapObject(colors, NULL);
for (int i = 0; i< qMin(colors, m_colormap.size()); i++) {
QRgb color = m_colormap[i];
cmap->Colors[i].Blue = qBlue(color);
cmap->Colors[i].Green = qGreen(color);
cmap->Colors[i].Red = qRed(color);
}
retrn = EGifPutScreenDesc(fileType, image->width(), image->height(), 8, 0, cmap);
FreeMapObject(cmap);
char nameExtension[11] = { 'N','E','T','S','C','A','P','E','2','.','0' };
char loopExtension[3] = { 1, 0, 0 };
retrn = EGifPutExtensionFirst(fileType, 0xFF, 11, &nameExtension);
retrn = EGifPutExtensionNext(fileType, 0xFF, 3, &loopExtension);
retrn = EGifPutExtensionLast(fileType, 0xFF, 0, NULL);
retrn = EGifPutComment(fileType, "Boat Scenario http://boats.berlios.de");
char gifExtension[4] = { 0, 8, 0, 0 };
foreach (image, imageList) {
if (image == imageList.last()) {
gifExtension[1] = 0;
gifExtension[2] = 2;
}
retrn = EGifPutExtension(fileType, 0xF9, 4, &gifExtension);
retrn = EGifPutImageDesc(fileType, 0, 0, image->width(), image->height(), 0, NULL);
for (int i = 0; i < image->height(); i++) {
retrn &= EGifPutLine(fileType, (GifPixelType*)image->scanLine(i), image->width());
}
}
retrn = EGifCloseFile(fileType);
return true;
}
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