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Fix SVG font rendering.

This commit is contained in:
Pāvels Nadtočajevs 2024-11-20 10:59:48 +02:00
parent 9e6098432a
commit 7f37e88658
8 changed files with 131 additions and 389 deletions
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70
modules/text_server_adv/thorvg_bounds_iterator.cpp
View File

@ -1,70 +0,0 @@
/**************************************************************************/
/* thorvg_bounds_iterator.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/godot.hpp>
using namespace godot;
#elif defined(GODOT_MODULE)
// Headers for building as built-in module.
#include "core/typedefs.h"
#include "modules/modules_enabled.gen.h" // For svg.
#endif
#ifdef MODULE_SVG_ENABLED
#include "thorvg_bounds_iterator.h"
#include <tvgIteratorAccessor.h>
#include <tvgPaint.h>
// This function uses private ThorVG API to get bounding box of top level children elements.
void tvg_get_bounds(tvg::Picture *p_picture, float &r_min_x, float &r_min_y, float &r_max_x, float &r_max_y) {
tvg::IteratorAccessor itrAccessor;
if (tvg::Iterator *it = itrAccessor.iterator(p_picture)) {
while (const tvg::Paint *child = it->next()) {
float x = 0, y = 0, w = 0, h = 0;
child->bounds(&x, &y, &w, &h, true);
r_min_x = MIN(x, r_min_x);
r_min_y = MIN(y, r_min_y);
r_max_x = MAX(x + w, r_max_x);
r_max_y = MAX(y + h, r_max_y);
}
delete (it);
}
}
#endif // MODULE_SVG_ENABLED

58
modules/text_server_adv/thorvg_bounds_iterator.h
View File

@ -1,58 +0,0 @@
/**************************************************************************/
/* thorvg_bounds_iterator.h */
/**************************************************************************/
/* 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. */
/**************************************************************************/
#ifndef THORVG_BOUNDS_ITERATOR_H
#define THORVG_BOUNDS_ITERATOR_H
#ifdef GDEXTENSION
// Headers for building as GDExtension plug-in.
#include <godot_cpp/core/mutex_lock.hpp>
#include <godot_cpp/godot.hpp>
using namespace godot;
#elif defined(GODOT_MODULE)
// Headers for building as built-in module.
#include "core/typedefs.h"
#include "modules/modules_enabled.gen.h" // For svg.
#endif
#ifdef MODULE_SVG_ENABLED
#include <thorvg.h>
void tvg_get_bounds(tvg::Picture *p_picture, float &r_min_x, float &r_min_y, float &r_max_x, float &r_max_y);
#endif // MODULE_SVG_ENABLED
#endif // THORVG_BOUNDS_ITERATOR_H

129
modules/text_server_adv/thorvg_svg_in_ot.cpp
View File

@ -57,8 +57,6 @@ using namespace godot;
#include "thorvg_svg_in_ot.h"
#include "thorvg_bounds_iterator.h"
#include <freetype/otsvg.h>
#include <ft2build.h>
@ -92,8 +90,9 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
parser.instantiate();
parser->_open_buffer((const uint8_t *)document->svg_document, document->svg_document_length);
float aspect = 1.0f;
String xml_body;
double embox_x = document->units_per_EM;
double embox_y = document->units_per_EM;
while (parser->read() == OK) {
if (parser->has_attribute("id")) {
const String &gl_name = parser->get_named_attribute_value("id");
@ -111,15 +110,26 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
PackedStringArray vb = parser->get_named_attribute_value("viewBox").split(" ");
if (vb.size() == 4) {
aspect = vb[2].to_float() / vb[3].to_float();
embox_x = vb[2].to_float();
embox_y = vb[3].to_float();
}
}
continue;
if (parser->has_attribute("width")) {
embox_x = parser->get_named_attribute_value("width").to_float();
}
if (parser->has_attribute("height")) {
embox_y = parser->get_named_attribute_value("height").to_float();
}
}
if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
xml_body += vformat("<%s", parser->get_node_name());
bool is_svg_tag = parser->get_node_name() == "svg";
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));
String aname = parser->get_attribute_name(i);
if (is_svg_tag && (aname == "viewBox" || aname == "width" || aname == "height")) {
continue;
}
xml_body += vformat(" %s=\"%s\"", aname, parser->get_attribute_value(i));
}
if (parser->is_empty()) {
@ -133,91 +143,78 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
xml_body += vformat("</%s>", parser->get_node_name());
}
}
String temp_xml_str = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 1 1\">" + xml_body;
CharString temp_xml = temp_xml_str.utf8();
std::unique_ptr<tvg::Picture> picture = tvg::Picture::gen();
tvg::Result result = picture->load(temp_xml.get_data(), temp_xml.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).");
}
gl_state.xml_code = xml_body.utf8();
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);
}
String xml_code_str = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"" + rtos(min_x) + " " + rtos(min_y) + " " + rtos(new_w) + " " + rtos(new_h) + "\">" + xml_body;
gl_state.xml_code = xml_code_str.utf8();
picture = tvg::Picture::gen();
result = picture->load(gl_state.xml_code.get_data(), gl_state.xml_code.length(), "svg+xml", false);
tvg::Result result = picture->load(gl_state.xml_code.get_data(), gl_state.xml_code.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;
float svg_width, svg_height;
picture->size(&svg_width, &svg_height);
double aspect = svg_width / svg_height;
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;
result = picture->size(embox_x * aspect, embox_y);
if (result != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
double x_svg_to_out = (double)metrics.x_ppem / embox_x;
double y_svg_to_out = (double)metrics.y_ppem / embox_y;
gl_state.m.e11 = (double)document->transform.xx / (1 << 16);
gl_state.m.e12 = -(double)document->transform.xy / (1 << 16);
gl_state.m.e21 = -(double)document->transform.yx / (1 << 16);
gl_state.m.e22 = (double)document->transform.yy / (1 << 16);
gl_state.m.e13 = (double)document->delta.x / 64 * embox_x / metrics.x_ppem;
gl_state.m.e23 = -(double)document->delta.y / 64 * embox_y / metrics.y_ppem;
gl_state.m.e31 = 0;
gl_state.m.e32 = 0;
gl_state.m.e33 = 1;
result = picture->size(embox_x * aspect * x_svg_to_out, embox_y * y_svg_to_out);
if (result != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
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 = gl_state.h + metrics.descender / 64.f;
gl_state.bmp_x = 0;
picture->size(&gl_state.w, &gl_state.h);
gl_state.x = (gl_state.h - gl_state.w) / 2.0;
gl_state.y = -gl_state.h;
gl_state.ready = true;
}
p_slot->bitmap_left = (FT_Int)gl_state.bmp_x;
p_slot->bitmap_top = (FT_Int)gl_state.bmp_y;
p_slot->bitmap_left = (FT_Int)gl_state.x;
p_slot->bitmap_top = (FT_Int)-gl_state.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;
double tmpd = Math::ceil(gl_state.h);
p_slot->bitmap.rows = (unsigned int)tmpd;
tmpd = Math::ceil(gl_state.w);
p_slot->bitmap.width = (unsigned int)tmpd;
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;
float metrics_width = (float)gl_state.w;
float metrics_height = (float)gl_state.h;
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;
float horiBearingX = (float)gl_state.x;
float horiBearingY = (float)-gl_state.y;
tmp = roundf(metrics_width * 64);
p_slot->metrics.width = (FT_Pos)tmp;
tmp = roundf(metrics_height * 64);
p_slot->metrics.height = (FT_Pos)tmp;
float vertBearingX = p_slot->metrics.horiBearingX / 64.0f - p_slot->metrics.horiAdvance / 64.0f / 2;
float vertBearingY = (p_slot->metrics.vertAdvance / 64.0f - p_slot->metrics.height / 64.0f) / 2;
float tmpf = Math::round(metrics_width * 64);
p_slot->metrics.width = (FT_Pos)tmpf;
tmpf = Math::round(metrics_height * 64);
p_slot->metrics.height = (FT_Pos)tmpf;
p_slot->metrics.horiBearingX = (FT_Pos)(horiBearingX * 64);
p_slot->metrics.horiBearingY = (FT_Pos)(horiBearingY * 64);
@ -250,6 +247,10 @@ FT_Error tvg_svg_in_ot_render(FT_GlyphSlot p_slot, FT_Pointer *p_state) {
if (res != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to load SVG document (glyph rendering).");
}
res = picture->size(gl_state.w, gl_state.h);
if (res != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
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.");

2
modules/text_server_adv/thorvg_svg_in_ot.h
View File

@ -60,8 +60,6 @@ using namespace godot;
struct GL_State {
bool ready = false;
float bmp_x = 0;
float bmp_y = 0;
float x = 0;
float y = 0;
float w = 0;

70
modules/text_server_fb/thorvg_bounds_iterator.cpp
View File

@ -1,70 +0,0 @@
/**************************************************************************/
/* thorvg_bounds_iterator.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/godot.hpp>
using namespace godot;
#elif defined(GODOT_MODULE)
// Headers for building as built-in module.
#include "core/typedefs.h"
#include "modules/modules_enabled.gen.h" // For svg.
#endif
#ifdef MODULE_SVG_ENABLED
#include "thorvg_bounds_iterator.h"
#include <tvgIteratorAccessor.h>
#include <tvgPaint.h>
// This function uses private ThorVG API to get bounding box of top level children elements.
void tvg_get_bounds(tvg::Picture *p_picture, float &r_min_x, float &r_min_y, float &r_max_x, float &r_max_y) {
tvg::IteratorAccessor itrAccessor;
if (tvg::Iterator *it = itrAccessor.iterator(p_picture)) {
while (const tvg::Paint *child = it->next()) {
float x = 0, y = 0, w = 0, h = 0;
child->bounds(&x, &y, &w, &h, true);
r_min_x = MIN(x, r_min_x);
r_min_y = MIN(y, r_min_y);
r_max_x = MAX(x + w, r_max_x);
r_max_y = MAX(y + h, r_max_y);
}
delete (it);
}
}
#endif // MODULE_SVG_ENABLED

58
modules/text_server_fb/thorvg_bounds_iterator.h
View File

@ -1,58 +0,0 @@
/**************************************************************************/
/* thorvg_bounds_iterator.h */
/**************************************************************************/
/* 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. */
/**************************************************************************/
#ifndef THORVG_BOUNDS_ITERATOR_H
#define THORVG_BOUNDS_ITERATOR_H
#ifdef GDEXTENSION
// Headers for building as GDExtension plug-in.
#include <godot_cpp/core/mutex_lock.hpp>
#include <godot_cpp/godot.hpp>
using namespace godot;
#elif defined(GODOT_MODULE)
// Headers for building as built-in module.
#include "core/typedefs.h"
#include "modules/modules_enabled.gen.h" // For svg.
#endif
#ifdef MODULE_SVG_ENABLED
#include <thorvg.h>
void tvg_get_bounds(tvg::Picture *p_picture, float &r_min_x, float &r_min_y, float &r_max_x, float &r_max_y);
#endif // MODULE_SVG_ENABLED
#endif // THORVG_BOUNDS_ITERATOR_H

131
modules/text_server_fb/thorvg_svg_in_ot.cpp
View File

@ -49,7 +49,7 @@ using namespace godot;
#include "core/typedefs.h"
#include "core/variant/variant.h"
#include "modules/modules_enabled.gen.h" // For svg.
#include "modules/modules_enabled.gen.h" // For svg, freetype.
#endif
#ifdef MODULE_SVG_ENABLED
@ -57,8 +57,6 @@ using namespace godot;
#include "thorvg_svg_in_ot.h"
#include "thorvg_bounds_iterator.h"
#include <freetype/otsvg.h>
#include <ft2build.h>
@ -92,8 +90,9 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
parser.instantiate();
parser->_open_buffer((const uint8_t *)document->svg_document, document->svg_document_length);
float aspect = 1.0f;
String xml_body;
double embox_x = document->units_per_EM;
double embox_y = document->units_per_EM;
while (parser->read() == OK) {
if (parser->has_attribute("id")) {
const String &gl_name = parser->get_named_attribute_value("id");
@ -111,15 +110,26 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
PackedStringArray vb = parser->get_named_attribute_value("viewBox").split(" ");
if (vb.size() == 4) {
aspect = vb[2].to_float() / vb[3].to_float();
embox_x = vb[2].to_float();
embox_y = vb[3].to_float();
}
}
continue;
if (parser->has_attribute("width")) {
embox_x = parser->get_named_attribute_value("width").to_float();
}
if (parser->has_attribute("height")) {
embox_y = parser->get_named_attribute_value("height").to_float();
}
}
if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
xml_body += vformat("<%s", parser->get_node_name());
bool is_svg_tag = parser->get_node_name() == "svg";
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));
String aname = parser->get_attribute_name(i);
if (is_svg_tag && (aname == "viewBox" || aname == "width" || aname == "height")) {
continue;
}
xml_body += vformat(" %s=\"%s\"", aname, parser->get_attribute_value(i));
}
if (parser->is_empty()) {
@ -133,91 +143,78 @@ FT_Error tvg_svg_in_ot_preset_slot(FT_GlyphSlot p_slot, FT_Bool p_cache, FT_Poin
xml_body += vformat("</%s>", parser->get_node_name());
}
}
String temp_xml_str = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 1 1\">" + xml_body;
CharString temp_xml = temp_xml_str.utf8();
std::unique_ptr<tvg::Picture> picture = tvg::Picture::gen();
tvg::Result result = picture->load(temp_xml.get_data(), temp_xml.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).");
}
gl_state.xml_code = xml_body.utf8();
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);
}
String xml_code_str = "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"" + rtos(min_x) + " " + rtos(min_y) + " " + rtos(new_w) + " " + rtos(new_h) + "\">" + xml_body;
gl_state.xml_code = xml_code_str.utf8();
picture = tvg::Picture::gen();
result = picture->load(gl_state.xml_code.get_data(), gl_state.xml_code.length(), "svg+xml", false);
tvg::Result result = picture->load(gl_state.xml_code.get_data(), gl_state.xml_code.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;
float svg_width, svg_height;
picture->size(&svg_width, &svg_height);
double aspect = svg_width / svg_height;
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;
result = picture->size(embox_x * aspect, embox_y);
if (result != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
double x_svg_to_out = (double)metrics.x_ppem / embox_x;
double y_svg_to_out = (double)metrics.y_ppem / embox_y;
gl_state.m.e11 = (double)document->transform.xx / (1 << 16);
gl_state.m.e12 = -(double)document->transform.xy / (1 << 16);
gl_state.m.e21 = -(double)document->transform.yx / (1 << 16);
gl_state.m.e22 = (double)document->transform.yy / (1 << 16);
gl_state.m.e13 = (double)document->delta.x / 64 * embox_x / metrics.x_ppem;
gl_state.m.e23 = -(double)document->delta.y / 64 * embox_y / metrics.y_ppem;
gl_state.m.e31 = 0;
gl_state.m.e32 = 0;
gl_state.m.e33 = 1;
result = picture->size(embox_x * aspect * x_svg_to_out, embox_y * y_svg_to_out);
if (result != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
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 = gl_state.h + metrics.descender / 64.f;
gl_state.bmp_x = 0;
picture->size(&gl_state.w, &gl_state.h);
gl_state.x = (gl_state.h - gl_state.w) / 2.0;
gl_state.y = -gl_state.h;
gl_state.ready = true;
}
p_slot->bitmap_left = (FT_Int)gl_state.bmp_x;
p_slot->bitmap_top = (FT_Int)gl_state.bmp_y;
p_slot->bitmap_left = (FT_Int)gl_state.x;
p_slot->bitmap_top = (FT_Int)-gl_state.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;
double tmpd = Math::ceil(gl_state.h);
p_slot->bitmap.rows = (unsigned int)tmpd;
tmpd = Math::ceil(gl_state.w);
p_slot->bitmap.width = (unsigned int)tmpd;
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;
float metrics_width = (float)gl_state.w;
float metrics_height = (float)gl_state.h;
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;
float horiBearingX = (float)gl_state.x;
float horiBearingY = (float)-gl_state.y;
tmp = roundf(metrics_width * 64);
p_slot->metrics.width = (FT_Pos)tmp;
tmp = roundf(metrics_height * 64);
p_slot->metrics.height = (FT_Pos)tmp;
float vertBearingX = p_slot->metrics.horiBearingX / 64.0f - p_slot->metrics.horiAdvance / 64.0f / 2;
float vertBearingY = (p_slot->metrics.vertAdvance / 64.0f - p_slot->metrics.height / 64.0f) / 2;
float tmpf = Math::round(metrics_width * 64);
p_slot->metrics.width = (FT_Pos)tmpf;
tmpf = Math::round(metrics_height * 64);
p_slot->metrics.height = (FT_Pos)tmpf;
p_slot->metrics.horiBearingX = (FT_Pos)(horiBearingX * 64);
p_slot->metrics.horiBearingY = (FT_Pos)(horiBearingY * 64);
@ -250,6 +247,10 @@ FT_Error tvg_svg_in_ot_render(FT_GlyphSlot p_slot, FT_Pointer *p_state) {
if (res != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to load SVG document (glyph rendering).");
}
res = picture->size(gl_state.w, gl_state.h);
if (res != tvg::Result::Success) {
ERR_FAIL_V_MSG(FT_Err_Invalid_SVG_Document, "Failed to resize SVG document.");
}
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.");

2
modules/text_server_fb/thorvg_svg_in_ot.h
View File

@ -60,8 +60,6 @@ using namespace godot;
struct GL_State {
bool ready = false;
float bmp_x = 0;
float bmp_y = 0;
float x = 0;
float y = 0;
float w = 0;