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112 lines
2.7 KiB
C++
112 lines
2.7 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "common/scummsys.h"
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#include "common/stream.h"
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#include "common/textconsole.h"
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#include "graphics/managed_surface.h"
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#include "graphics/pixelformat.h"
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#include "graphics/svg.h"
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#define NANOSVG_IMPLEMENTATION
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#include "graphics/nanosvg/nanosvg.h"
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#define NANOSVGRAST_IMPLEMENTATION
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#include "graphics/nanosvg/nanosvgrast.h"
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namespace Graphics {
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SVGBitmap::SVGBitmap(Common::SeekableReadStream *in) {
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int32 size = in->size();
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char *data = (char *)malloc(size + 1);
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in->read(data, size);
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data[size] = '\0';
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_svg = nsvgParse(data, "px", 96);
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if (_svg == NULL)
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error("Cannot parse SVG image");
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_rasterizer = NULL;
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_cachedW = _cachedH = -1;
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_cache = NULL;
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_render = NULL;
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#ifdef SCUMM_BIG_ENDIAN
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_pixelformat = new Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0);
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#else
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_pixelformat = new Graphics::PixelFormat(4, 8, 8, 8, 8, 0, 8, 16, 24);
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#endif
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}
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SVGBitmap::~SVGBitmap() {
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if (_rasterizer)
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nsvgDeleteRasterizer(_rasterizer);
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nsvgDelete(_svg);
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delete _render;
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}
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void SVGBitmap::render(Graphics::ManagedSurface &target, int dw, int dh) {
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if (dw == 0 || dh == 0)
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return;
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if (_rasterizer == NULL)
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_rasterizer = nsvgCreateRasterizer();
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if (_cachedW != dw || _cachedH != dh) {
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if (_cache)
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free(_cache);
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_cache = (byte *)malloc(dw * dh * 4);
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// Maintain aspect ratio
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float xRatio = 1.0f * dw / _svg->width;
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float yRatio = 1.0f * dh / _svg->height;
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float ratio = xRatio < yRatio ? xRatio : yRatio;
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nsvgRasterize(_rasterizer, _svg, 0, 0, ratio, _cache, dw, dh, dw * 4);
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_cachedW = dw;
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_cachedH = dh;
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if (_render)
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delete _render;
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Graphics::Surface tmp;;
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tmp.init(dw, dh, dw * 4, _cache, *_pixelformat);
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_render = new ManagedSurface(dw, dh, *_pixelformat);
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_render->transBlitFrom(tmp);
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tmp.free();
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}
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target.blitFrom(_render->rawSurface());
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}
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} // end of namespace Graphics
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