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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 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 "glk/picture.h"
#include "common/file.h"
#include "image/jpeg.h"
#include "image/png.h"
namespace Glk {
void Pictures::clear() {
for (uint idx = 0; idx < _store.size(); ++idx) {
delete _store[idx]._picture;
delete _store[idx]._scaled;
}
_store.clear();
}
void Pictures::increment() {
++_refCount;
}
void Pictures::decrement() {
if (_refCount > 0 && --_refCount == 0)
clear();
}
PictureEntry *Pictures::search(uint id) {
Picture *pic;
for (uint idx = 0; idx < _store.size(); ++idx) {
pic = _store[idx]._picture;
if (pic && pic->_id == id)
return &_store[idx];
}
return nullptr;
}
void Pictures::storeOriginal(Picture *pic) {
PictureEntry newPic;
newPic._picture = pic;
_store.push_back(newPic);
}
void Pictures::storeScaled(Picture *pic) {
PictureEntry *entry = search(pic->_id);
if (!entry)
return;
delete entry->_scaled;
entry->_scaled = pic;
}
void Pictures::store(Picture *pic) {
if (!pic)
return;
if (!pic->_scaled)
storeOriginal(pic);
else
storeScaled(pic);
}
Picture *Pictures::retrieve(uint id, bool scaled) {
Picture *pic;
for (uint idx = 0; idx < _store.size(); ++idx) {
pic = scaled ? _store[idx]._scaled : _store[idx]._picture;
if (pic && pic->_id == id)
return pic;
}
return nullptr;
}
Picture *Pictures::load(uint32 id) {
::Image::PNGDecoder png;
::Image::JPEGDecoder jpg;
const Graphics::Surface *img;
Picture *pic;
// Check if the picture is already in the store
pic = retrieve(id, false);
if (pic)
return pic;
Common::File f;
if (f.open(Common::String::format("PIC%lu.png", id))) {
png.loadStream(f);
img = png.getSurface();
} else if (f.open(Common::String::format("PIC%lu.jpg", id))) {
jpg.loadStream(f);
img = jpg.getSurface();
}
pic = new Picture();
pic->_refCount = 1;
pic->_id = id;
pic->_scaled = false;
store(pic);
return pic;
}
Picture *Pictures::scale(Picture *src, size_t sx, size_t sy) {
// Check for the presence of an already scaled version of that size
Picture *dst = retrieve(src->_id, true);
if (dst && dst->w == sx && dst->h == sy)
return dst;
// Create a new picture of the destination size and rescale the source picture
dst = new Picture(sx, sy, src->format);
dst->_id = src->_id;
dst->_scaled = true;
dst->transBlitFrom(*src, src->getBounds(), dst->getBounds(), (uint)-1);
storeScaled(dst);
}
/*--------------------------------------------------------------------------*/
void Picture::increment() {
++_refCount;
}
void Picture::decrement() {
if (_refCount > 0 && --_refCount == 0) {
// No longer any references to this picture, so remove it
delete this;
}
}
void Picture::drawPicture(int x0, int y0, int dx0, int dy0, int dx1, int dy1) {
// TODO: drawPicture
}
} // End of namespace Glk
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