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/*************************************************************************/
/* image_loader_svg.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "image_loader_svg.h"
#include <nanosvg.h>
#include <nanosvgrast.h>
void SVGRasterizer::rasterize(NSVGimage *p_image, float p_tx, float p_ty, float p_scale, unsigned char *p_dst, int p_w, int p_h, int p_stride) {
nsvgRasterize(rasterizer, p_image, p_tx, p_ty, p_scale, p_dst, p_w, p_h, p_stride);
}
SVGRasterizer::SVGRasterizer() {
rasterizer = nsvgCreateRasterizer();
}
SVGRasterizer::~SVGRasterizer() {
nsvgDeleteRasterizer(rasterizer);
}
SVGRasterizer ImageLoaderSVG::rasterizer;
inline void change_nsvg_paint_color(NSVGpaint *p_paint, const uint32_t p_old, const uint32_t p_new) {
if (p_paint->type == NSVG_PAINT_COLOR) {
if (p_paint->color << 8 == p_old << 8) {
p_paint->color = (p_paint->color & 0xFF000000) | (p_new & 0x00FFFFFF);
}
}
if (p_paint->type == NSVG_PAINT_LINEAR_GRADIENT || p_paint->type == NSVG_PAINT_RADIAL_GRADIENT) {
for (int stop_index = 0; stop_index < p_paint->gradient->nstops; stop_index++) {
if (p_paint->gradient->stops[stop_index].color << 8 == p_old << 8) {
p_paint->gradient->stops[stop_index].color = p_new;
}
}
}
}
void ImageLoaderSVG::_convert_colors(NSVGimage *p_svg_image) {
for (NSVGshape *shape = p_svg_image->shapes; shape != NULL; shape = shape->next) {
for (int i = 0; i < replace_colors.old_colors.size(); i++) {
change_nsvg_paint_color(&(shape->stroke), replace_colors.old_colors[i], replace_colors.new_colors[i]);
change_nsvg_paint_color(&(shape->fill), replace_colors.old_colors[i], replace_colors.new_colors[i]);
}
}
}
void ImageLoaderSVG::set_convert_colors(Dictionary *p_replace_color) {
if (p_replace_color) {
Dictionary replace_color = *p_replace_color;
for (int i = 0; i < replace_color.keys().size(); i++) {
Variant o_c = replace_color.keys()[i];
Variant n_c = replace_color[replace_color.keys()[i]];
if (o_c.get_type() == Variant::COLOR && n_c.get_type() == Variant::COLOR) {
Color old_color = o_c;
Color new_color = n_c;
replace_colors.old_colors.push_back(old_color.to_abgr32());
replace_colors.new_colors.push_back(new_color.to_abgr32());
}
}
} else {
replace_colors.old_colors.clear();
replace_colors.new_colors.clear();
}
}
Error ImageLoaderSVG::_create_image(Ref<Image> p_image, const PoolVector<uint8_t> *p_data, float p_scale, bool upsample, bool convert_colors) {
NSVGimage *svg_image;
PoolVector<uint8_t>::Read src_r = p_data->read();
svg_image = nsvgParse((char *)src_r.ptr(), "px", 96);
if (svg_image == NULL) {
ERR_PRINT("SVG Corrupted");
return ERR_FILE_CORRUPT;
}
if (convert_colors) {
_convert_colors(svg_image);
}
const float upscale = upsample ? 2.0 : 1.0;
const int w = (int)(svg_image->width * p_scale * upscale);
ERR_FAIL_COND_V_MSG(w > Image::MAX_WIDTH, ERR_PARAMETER_RANGE_ERROR, vformat("Can't create image from SVG with scale %s, the resulting image size exceeds max width.", rtos(p_scale)));
const int h = (int)(svg_image->height * p_scale * upscale);
ERR_FAIL_COND_V_MSG(h > Image::MAX_HEIGHT, ERR_PARAMETER_RANGE_ERROR, vformat("Can't create image from SVG with scale %s, the resulting image size exceeds max height.", rtos(p_scale)));
PoolVector<uint8_t> dst_image;
dst_image.resize(w * h * 4);
PoolVector<uint8_t>::Write dw = dst_image.write();
rasterizer.rasterize(svg_image, 0, 0, p_scale * upscale, (unsigned char *)dw.ptr(), w, h, w * 4);
dw.release();
p_image->create(w, h, false, Image::FORMAT_RGBA8, dst_image);
if (upsample) {
p_image->shrink_x2();
}
nsvgDelete(svg_image);
return OK;
}
Error ImageLoaderSVG::create_image_from_string(Ref<Image> p_image, const char *p_svg_str, float p_scale, bool upsample, bool convert_colors) {
size_t str_len = strlen(p_svg_str);
PoolVector<uint8_t> src_data;
src_data.resize(str_len + 1);
PoolVector<uint8_t>::Write src_w = src_data.write();
memcpy(src_w.ptr(), p_svg_str, str_len + 1);
return _create_image(p_image, &src_data, p_scale, upsample, convert_colors);
}
Error ImageLoaderSVG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
uint32_t size = f->get_len();
PoolVector<uint8_t> src_image;
src_image.resize(size + 1);
PoolVector<uint8_t>::Write src_w = src_image.write();
f->get_buffer(src_w.ptr(), size);
src_w.ptr()[size] = '\0';
return _create_image(p_image, &src_image, p_scale, 1.0);
}
void ImageLoaderSVG::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("svg");
p_extensions->push_back("svgz");
}
ImageLoaderSVG::ImageLoaderSVG() {
}
ImageLoaderSVG::ReplaceColors ImageLoaderSVG::replace_colors;
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