162 lines
6.5 KiB
C++
162 lines
6.5 KiB
C++
/*************************************************************************/
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/* image_loader_svg.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "image_loader_svg.h"
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#include <nanosvg.h>
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#include <nanosvgrast.h>
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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) {
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nsvgRasterize(rasterizer, p_image, p_tx, p_ty, p_scale, p_dst, p_w, p_h, p_stride);
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}
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SVGRasterizer::SVGRasterizer() {
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rasterizer = nsvgCreateRasterizer();
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}
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SVGRasterizer::~SVGRasterizer() {
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nsvgDeleteRasterizer(rasterizer);
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}
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SVGRasterizer ImageLoaderSVG::rasterizer;
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inline void change_nsvg_paint_color(NSVGpaint *p_paint, const uint32_t p_old, const uint32_t p_new) {
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if (p_paint->type == NSVG_PAINT_COLOR) {
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if (p_paint->color << 8 == p_old << 8) {
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p_paint->color = (p_paint->color & 0xFF000000) | (p_new & 0x00FFFFFF);
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}
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}
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if (p_paint->type == NSVG_PAINT_LINEAR_GRADIENT || p_paint->type == NSVG_PAINT_RADIAL_GRADIENT) {
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for (int stop_index = 0; stop_index < p_paint->gradient->nstops; stop_index++) {
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if (p_paint->gradient->stops[stop_index].color << 8 == p_old << 8) {
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p_paint->gradient->stops[stop_index].color = p_new;
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}
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}
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}
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}
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void ImageLoaderSVG::_convert_colors(NSVGimage *p_svg_image) {
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for (NSVGshape *shape = p_svg_image->shapes; shape != nullptr; shape = shape->next) {
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for (int i = 0; i < replace_colors.old_colors.size(); i++) {
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change_nsvg_paint_color(&(shape->stroke), replace_colors.old_colors[i], replace_colors.new_colors[i]);
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change_nsvg_paint_color(&(shape->fill), replace_colors.old_colors[i], replace_colors.new_colors[i]);
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}
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}
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}
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void ImageLoaderSVG::set_convert_colors(Dictionary *p_replace_color) {
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if (p_replace_color) {
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Dictionary replace_color = *p_replace_color;
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for (int i = 0; i < replace_color.keys().size(); i++) {
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Variant o_c = replace_color.keys()[i];
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Variant n_c = replace_color[replace_color.keys()[i]];
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if (o_c.get_type() == Variant::COLOR && n_c.get_type() == Variant::COLOR) {
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Color old_color = o_c;
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Color new_color = n_c;
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replace_colors.old_colors.push_back(old_color.to_abgr32());
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replace_colors.new_colors.push_back(new_color.to_abgr32());
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}
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}
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} else {
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replace_colors.old_colors.clear();
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replace_colors.new_colors.clear();
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}
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}
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Error ImageLoaderSVG::_create_image(Ref<Image> p_image, const Vector<uint8_t> *p_data, float p_scale, bool upsample, bool convert_colors) {
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NSVGimage *svg_image;
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const uint8_t *src_r = p_data->ptr();
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svg_image = nsvgParse((char *)src_r, "px", 96);
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if (svg_image == nullptr) {
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ERR_PRINT("SVG Corrupted");
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return ERR_FILE_CORRUPT;
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}
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if (convert_colors) {
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_convert_colors(svg_image);
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}
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const float upscale = upsample ? 2.0 : 1.0;
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const int w = (int)(svg_image->width * p_scale * upscale);
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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)));
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const int h = (int)(svg_image->height * p_scale * upscale);
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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)));
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Vector<uint8_t> dst_image;
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dst_image.resize(w * h * 4);
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uint8_t *dw = dst_image.ptrw();
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rasterizer.rasterize(svg_image, 0, 0, p_scale * upscale, (unsigned char *)dw, w, h, w * 4);
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p_image->create(w, h, false, Image::FORMAT_RGBA8, dst_image);
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if (upsample) {
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p_image->shrink_x2();
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}
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nsvgDelete(svg_image);
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return OK;
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}
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Error ImageLoaderSVG::create_image_from_string(Ref<Image> p_image, const char *p_svg_str, float p_scale, bool upsample, bool convert_colors) {
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size_t str_len = strlen(p_svg_str);
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Vector<uint8_t> src_data;
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src_data.resize(str_len + 1);
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uint8_t *src_w = src_data.ptrw();
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memcpy(src_w, p_svg_str, str_len + 1);
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return _create_image(p_image, &src_data, p_scale, upsample, convert_colors);
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}
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Error ImageLoaderSVG::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {
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uint64_t size = f->get_length();
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Vector<uint8_t> src_image;
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src_image.resize(size + 1);
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uint8_t *src_w = src_image.ptrw();
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f->get_buffer(src_w, size);
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src_w[size] = '\0';
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return _create_image(p_image, &src_image, p_scale, 1.0);
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}
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void ImageLoaderSVG::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("svg");
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p_extensions->push_back("svgz");
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}
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ImageLoaderSVG::ImageLoaderSVG() {
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}
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ImageLoaderSVG::ReplaceColors ImageLoaderSVG::replace_colors;
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