d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
320 lines
12 KiB
C++
320 lines
12 KiB
C++
/**************************************************************************/
|
|
/* thorvg_svg_in_ot.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* 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. */
|
|
/**************************************************************************/
|
|
|
|
#ifdef GDEXTENSION
|
|
// Headers for building as GDExtension plug-in.
|
|
|
|
#include <godot_cpp/classes/xml_parser.hpp>
|
|
#include <godot_cpp/core/mutex_lock.hpp>
|
|
#include <godot_cpp/godot.hpp>
|
|
#include <godot_cpp/templates/vector.hpp>
|
|
|
|
using namespace godot;
|
|
|
|
#else
|
|
// Headers for building as built-in module.
|
|
|
|
#include "core/error/error_macros.h"
|
|
#include "core/io/xml_parser.h"
|
|
#include "core/os/memory.h"
|
|
#include "core/os/os.h"
|
|
#include "core/string/ustring.h"
|
|
#include "core/typedefs.h"
|
|
#include "core/variant/variant.h"
|
|
|
|
#include "modules/modules_enabled.gen.h" // For svg.
|
|
#endif
|
|
|
|
#ifdef MODULE_SVG_ENABLED
|
|
|
|
#include "thorvg_bounds_iterator.h"
|
|
#include "thorvg_svg_in_ot.h"
|
|
|
|
#include <freetype/otsvg.h>
|
|
#include <ft2build.h>
|
|
|
|
#include <math.h>
|
|
#include <stdlib.h>
|
|
|
|
FT_Error tvg_svg_in_ot_init(FT_Pointer *p_state) {
|
|
*p_state = memnew(TVG_State);
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
void tvg_svg_in_ot_free(FT_Pointer *p_state) {
|
|
TVG_State *state = *reinterpret_cast<TVG_State **>(p_state);
|
|
memdelete(state);
|
|
}
|
|
|
|
FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Pointer *p_state) {
|
|
TVG_State *state = *reinterpret_cast<TVG_State **>(p_state);
|
|
if (!state) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "SVG in OT state not initialized.");
|
|
}
|
|
MutexLock lock(state->mutex);
|
|
|
|
FT_SVG_Document document = (FT_SVG_Document)p_slot->other;
|
|
FT_Size_Metrics metrics = document->metrics;
|
|
|
|
GL_State &gl_state = state->glyph_map[p_slot->glyph_index];
|
|
if (!gl_state.ready) {
|
|
Ref<XMLParser> parser;
|
|
parser.instantiate();
|
|
#ifdef GDEXTENSION
|
|
PackedByteArray data;
|
|
data.resize(document->svg_document_length);
|
|
memcpy(data.ptrw(), document->svg_document, document->svg_document_length);
|
|
parser->open_buffer(data);
|
|
#else
|
|
parser->_open_buffer((const uint8_t *)document->svg_document, document->svg_document_length);
|
|
#endif
|
|
|
|
float aspect = 1.0f;
|
|
String xml_body;
|
|
while (parser->read() == OK) {
|
|
if (parser->has_attribute("id")) {
|
|
#ifdef GDEXTENSION
|
|
const String &gl_name = parser->get_named_attribute_value("id");
|
|
#else
|
|
const String &gl_name = parser->get_attribute_value("id");
|
|
#endif
|
|
if (gl_name.begins_with("glyph")) {
|
|
int dot_pos = gl_name.find(".");
|
|
int64_t gl_idx = gl_name.substr(5, (dot_pos > 0) ? dot_pos - 5 : -1).to_int();
|
|
if (p_slot->glyph_index != gl_idx) {
|
|
parser->skip_section();
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (parser->get_node_type() == XMLParser::NODE_ELEMENT && parser->get_node_name() == "svg") {
|
|
if (parser->has_attribute("viewBox")) {
|
|
#ifdef GDEXTENSION
|
|
PackedStringArray vb = parser->get_named_attribute_value("viewBox").split(" ");
|
|
#else
|
|
Vector<String> vb = parser->get_attribute_value("viewBox").split(" ");
|
|
#endif
|
|
|
|
if (vb.size() == 4) {
|
|
aspect = vb[2].to_float() / vb[3].to_float();
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
#ifdef GDEXTENSION
|
|
if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
|
|
xml_body = xml_body + "<" + parser->get_node_name();
|
|
for (int i = 0; i < parser->get_attribute_count(); i++) {
|
|
xml_body = xml_body + " " + parser->get_attribute_name(i) + "=\"" + parser->get_attribute_value(i) + "\"";
|
|
}
|
|
xml_body = xml_body + ">";
|
|
} else if (parser->get_node_type() == XMLParser::NODE_TEXT) {
|
|
xml_body = xml_body + parser->get_node_data();
|
|
} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END) {
|
|
xml_body = xml_body + "</" + parser->get_node_name() + ">";
|
|
}
|
|
#else
|
|
if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
|
|
xml_body += vformat("<%s", parser->get_node_name());
|
|
for (int i = 0; i < parser->get_attribute_count(); i++) {
|
|
xml_body += vformat(" %s=\"%s\"", parser->get_attribute_name(i), parser->get_attribute_value(i));
|
|
}
|
|
xml_body += ">";
|
|
} else if (parser->get_node_type() == XMLParser::NODE_TEXT) {
|
|
xml_body += parser->get_node_data();
|
|
} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END) {
|
|
xml_body += vformat("</%s>", parser->get_node_name());
|
|
}
|
|
#endif
|
|
}
|
|
String temp_xml = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 0 0\">" + xml_body;
|
|
|
|
std::unique_ptr<tvg::Picture> picture = tvg::Picture::gen();
|
|
tvg::Result result = picture->load(temp_xml.utf8().get_data(), temp_xml.utf8().length(), "svg+xml", false);
|
|
if (result != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to load SVG document (bounds detection).");
|
|
}
|
|
|
|
float min_x = INFINITY, min_y = INFINITY, max_x = -INFINITY, max_y = -INFINITY;
|
|
tvg_get_bounds(picture.get(), min_x, min_y, max_x, max_y);
|
|
|
|
float new_h = (max_y - min_y);
|
|
float new_w = (max_x - min_x);
|
|
|
|
if (new_h * aspect >= new_w) {
|
|
new_w = (new_h * aspect);
|
|
} else {
|
|
new_h = (new_w / aspect);
|
|
}
|
|
|
|
#ifdef GDEXTENSION
|
|
gl_state.xml_code = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"" + rtos(min_x) + " " + rtos(min_y) + " " + rtos(new_w) + " " + rtos(new_h) + "\">" + xml_body;
|
|
#else
|
|
gl_state.xml_code = vformat("<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"%f %f %f %f\">", min_x, min_y, new_w, new_h) + xml_body;
|
|
#endif
|
|
|
|
picture = tvg::Picture::gen();
|
|
result = picture->load(gl_state.xml_code.utf8().get_data(), gl_state.xml_code.utf8().length(), "svg+xml", false);
|
|
if (result != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to load SVG document (glyph metrics).");
|
|
}
|
|
|
|
float x_svg_to_out, y_svg_to_out;
|
|
x_svg_to_out = (float)metrics.x_ppem / new_w;
|
|
y_svg_to_out = (float)metrics.y_ppem / new_h;
|
|
|
|
gl_state.m.e11 = (double)document->transform.xx / (1 << 16) * x_svg_to_out;
|
|
gl_state.m.e12 = -(double)document->transform.xy / (1 << 16) * x_svg_to_out;
|
|
gl_state.m.e21 = -(double)document->transform.yx / (1 << 16) * y_svg_to_out;
|
|
gl_state.m.e22 = (double)document->transform.yy / (1 << 16) * y_svg_to_out;
|
|
gl_state.m.e13 = (double)document->delta.x / 64 * new_w / metrics.x_ppem;
|
|
gl_state.m.e23 = -(double)document->delta.y / 64 * new_h / metrics.y_ppem;
|
|
gl_state.m.e31 = 0;
|
|
gl_state.m.e32 = 0;
|
|
gl_state.m.e33 = 1;
|
|
|
|
result = picture->transform(gl_state.m);
|
|
if (result != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to apply transform to SVG document.");
|
|
}
|
|
|
|
result = picture->bounds(&gl_state.x, &gl_state.y, &gl_state.w, &gl_state.h, true);
|
|
if (result != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to get SVG bounds.");
|
|
}
|
|
|
|
gl_state.bmp_y = -min_y * gl_state.h / new_h;
|
|
gl_state.bmp_x = min_x * gl_state.w / new_w;
|
|
|
|
gl_state.ready = true;
|
|
}
|
|
|
|
p_slot->bitmap_left = (FT_Int)gl_state.bmp_x;
|
|
p_slot->bitmap_top = (FT_Int)gl_state.bmp_y;
|
|
|
|
float tmp = ceil(gl_state.h);
|
|
p_slot->bitmap.rows = (unsigned int)tmp;
|
|
tmp = ceil(gl_state.w);
|
|
p_slot->bitmap.width = (unsigned int)tmp;
|
|
p_slot->bitmap.pitch = (int)p_slot->bitmap.width * 4;
|
|
p_slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA;
|
|
|
|
float metrics_width, metrics_height;
|
|
float horiBearingX, horiBearingY;
|
|
float vertBearingX, vertBearingY;
|
|
|
|
metrics_width = (float)gl_state.w;
|
|
metrics_height = (float)gl_state.h;
|
|
horiBearingX = (float)gl_state.x;
|
|
horiBearingY = (float)-gl_state.y;
|
|
vertBearingX = p_slot->metrics.horiBearingX / 64.0f - p_slot->metrics.horiAdvance / 64.0f / 2;
|
|
vertBearingY = (p_slot->metrics.vertAdvance / 64.0f - p_slot->metrics.height / 64.0f) / 2;
|
|
|
|
tmp = roundf(metrics_width * 64);
|
|
p_slot->metrics.width = (FT_Pos)tmp;
|
|
tmp = roundf(metrics_height * 64);
|
|
p_slot->metrics.height = (FT_Pos)tmp;
|
|
|
|
p_slot->metrics.horiBearingX = (FT_Pos)(horiBearingX * 64);
|
|
p_slot->metrics.horiBearingY = (FT_Pos)(horiBearingY * 64);
|
|
p_slot->metrics.vertBearingX = (FT_Pos)(vertBearingX * 64);
|
|
p_slot->metrics.vertBearingY = (FT_Pos)(vertBearingY * 64);
|
|
|
|
if (p_slot->metrics.vertAdvance == 0) {
|
|
p_slot->metrics.vertAdvance = (FT_Pos)(metrics_height * 1.2f * 64);
|
|
}
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
FT_Error tvg_svg_in_ot_render(FT_GlyphSlot p_slot, FT_Pointer *p_state) {
|
|
TVG_State *state = *reinterpret_cast<TVG_State **>(p_state);
|
|
if (!state) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "SVG in OT state not initialized.");
|
|
}
|
|
MutexLock lock(state->mutex);
|
|
|
|
if (!state->glyph_map.has(p_slot->glyph_index)) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "SVG glyph not loaded.");
|
|
}
|
|
|
|
GL_State &gl_state = state->glyph_map[p_slot->glyph_index];
|
|
ERR_FAIL_COND_V_MSG(!gl_state.ready, FT_Err_Invalid_SVG_Document, "SVG glyph not ready.");
|
|
|
|
std::unique_ptr<tvg::Picture> picture = tvg::Picture::gen();
|
|
tvg::Result res = picture->load(gl_state.xml_code.utf8().get_data(), gl_state.xml_code.utf8().length(), "svg+xml", false);
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to load SVG document (glyph rendering).");
|
|
}
|
|
res = picture->transform(gl_state.m);
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to apply transform to SVG document.");
|
|
}
|
|
|
|
std::unique_ptr<tvg::SwCanvas> sw_canvas = tvg::SwCanvas::gen();
|
|
res = sw_canvas->target((uint32_t *)p_slot->bitmap.buffer, (int)p_slot->bitmap.width, (int)p_slot->bitmap.width, (int)p_slot->bitmap.rows, tvg::SwCanvas::ARGB8888_STRAIGHT);
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_Outline, "Failed to create SVG canvas.");
|
|
}
|
|
res = sw_canvas->push(std::move(picture));
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_Outline, "Failed to set SVG canvas source.");
|
|
}
|
|
res = sw_canvas->draw();
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_Outline, "Failed to draw to SVG canvas.");
|
|
}
|
|
res = sw_canvas->sync();
|
|
if (res != tvg::Result::Success) {
|
|
ERR_FAIL_V_MSG(FT_Err_Invalid_Outline, "Failed to sync SVG canvas.");
|
|
}
|
|
|
|
state->glyph_map.erase(p_slot->glyph_index);
|
|
|
|
p_slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA;
|
|
p_slot->bitmap.num_grays = 256;
|
|
p_slot->format = FT_GLYPH_FORMAT_BITMAP;
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
SVG_RendererHooks tvg_svg_in_ot_hooks = {
|
|
(SVG_Lib_Init_Func)tvg_svg_in_ot_init,
|
|
(SVG_Lib_Free_Func)tvg_svg_in_ot_free,
|
|
(SVG_Lib_Render_Func)tvg_svg_in_ot_render,
|
|
(SVG_Lib_Preset_Slot_Func)tvg_svg_in_ot_preset_slot,
|
|
};
|
|
|
|
SVG_RendererHooks *get_tvg_svg_in_ot_hooks() {
|
|
return &tvg_svg_in_ot_hooks;
|
|
}
|
|
|
|
#endif // MODULE_SVG_ENABLED
|