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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 "graphics/image-archive.h"
#include "graphics/surface.h"
#include "common/archive.h"
#include "common/compression/unzip.h"
#include "image/png.h"
namespace Graphics {
ImageArchive::~ImageArchive() {
reset();
delete _imageArchive;
}
void ImageArchive::reset() {
#ifdef USE_PNG
for (auto &i : _imageCache)
delete i._value;
_imageCache.clear();
#endif
}
bool ImageArchive::setImageArchive(const Common::Path &fname) {
reset();
delete _imageArchive;
_imageArchive = Common::makeZipArchive(fname);
if (!_imageArchive)
warning("ImageArchive::setImageArchive(): Could not find %s. Images will not be rendered", fname.toString().c_str());
return _imageArchive != nullptr;
}
const Surface *ImageArchive::getImageSurface(const Common::Path &fname, int w, int h) {
#ifndef USE_PNG
warning("ImageArchive::getImageSurface(): PNG support not compiled. Cannot load file %s", fname.toString().c_str());
return nullptr;
#else
if (_imageCache.contains(fname)) {
// TODO: Handle the case where a previously loaded image hasn't been scaled.
const Surface *surf = _imageCache[fname];
if (surf && surf->w == w && surf->h == h)
return surf;
}
if (!_imageArchive) {
warning("ImageArchive::getImageSurface(): Image Archive was not loaded. Use setImageArchive()");
return _imageCache[fname];
}
Common::SeekableReadStream *stream = _imageArchive->createReadStreamForMember(fname);
if (!stream) {
warning("ImageArchive::getImageSurface(): Cannot open file %s", fname.toString().c_str());
return _imageCache[fname];
}
Image::PNGDecoder decoder;
if (!decoder.loadStream(*stream)) {
warning("ImageArchive::getImageSurface(): Cannot load file %s", fname.toString().c_str());
return _imageCache[fname];
}
if (_imageCache.contains(fname)) {
delete _imageCache[fname];
_imageCache.erase(fname);
}
const Graphics::Surface *surf = decoder.getSurface();
_imageCache[fname] = surf->scale(w ? w : surf->w, h ? h : surf->h, true);
return _imageCache[fname];
#endif // USE_PNG
}
} // End of namespace Graphics
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