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102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "graphics/image-archive.h"
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#include "graphics/surface.h"
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#include "common/archive.h"
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#include "common/compression/unzip.h"
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#include "image/png.h"
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namespace Graphics {
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ImageArchive::~ImageArchive() {
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reset();
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delete _imageArchive;
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}
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void ImageArchive::reset() {
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#ifdef USE_PNG
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for (auto &i : _imageCache)
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delete i._value;
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_imageCache.clear();
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#endif
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}
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bool ImageArchive::setImageArchive(const Common::Path &fname) {
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reset();
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delete _imageArchive;
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_imageArchive = Common::makeZipArchive(fname);
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if (!_imageArchive)
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warning("ImageArchive::setImageArchive(): Could not find %s. Images will not be rendered", fname.toString().c_str());
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return _imageArchive != nullptr;
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}
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const Surface *ImageArchive::getImageSurface(const Common::Path &fname, int w, int h) {
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#ifndef USE_PNG
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warning("ImageArchive::getImageSurface(): PNG support not compiled. Cannot load file %s", fname.toString().c_str());
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return nullptr;
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#else
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if (_imageCache.contains(fname)) {
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// TODO: Handle the case where a previously loaded image hasn't been scaled.
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const Surface *surf = _imageCache[fname];
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if (surf && surf->w == w && surf->h == h)
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return surf;
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}
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if (!_imageArchive) {
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warning("ImageArchive::getImageSurface(): Image Archive was not loaded. Use setImageArchive()");
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return _imageCache[fname];
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}
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Common::SeekableReadStream *stream = _imageArchive->createReadStreamForMember(fname);
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if (!stream) {
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warning("ImageArchive::getImageSurface(): Cannot open file %s", fname.toString().c_str());
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return _imageCache[fname];
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}
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Image::PNGDecoder decoder;
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if (!decoder.loadStream(*stream)) {
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warning("ImageArchive::getImageSurface(): Cannot load file %s", fname.toString().c_str());
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return _imageCache[fname];
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}
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if (_imageCache.contains(fname)) {
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delete _imageCache[fname];
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_imageCache.erase(fname);
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}
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const Graphics::Surface *surf = decoder.getSurface();
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_imageCache[fname] = surf->scale(w ? w : surf->w, h ? h : surf->h, true);
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return _imageCache[fname];
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#endif // USE_PNG
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}
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} // End of namespace Graphics
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