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godot/modules/text_server_adv/dynamic_font_adv.cpp

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/*************************************************************************/
/* dynamic_font_adv.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "dynamic_font_adv.h"
#ifdef MODULE_FREETYPE_ENABLED
#include FT_STROKER_H
#include FT_ADVANCES_H
#include FT_MULTIPLE_MASTERS_H
DynamicFontDataAdvanced::DataAtSize *DynamicFontDataAdvanced::get_data_for_size(int p_size, int p_outline_size) {
ERR_FAIL_COND_V(!valid, nullptr);
ERR_FAIL_COND_V(p_size < 0 || p_size > UINT16_MAX, nullptr);
ERR_FAIL_COND_V(p_outline_size < 0 || p_outline_size > UINT16_MAX, nullptr);
CacheID id;
id.size = p_size;
id.outline_size = p_outline_size;
DataAtSize *fds = nullptr;
Map<CacheID, DataAtSize *>::Element *E = nullptr;
if (p_outline_size != 0) {
E = size_cache_outline.find(id);
} else {
E = size_cache.find(id);
}
if (E != nullptr) {
fds = E->get();
} else {
if (font_mem == nullptr && font_path != String()) {
if (!font_mem_cache.is_empty()) {
font_mem = font_mem_cache.ptr();
font_mem_size = font_mem_cache.size();
} else {
FileAccess *f = FileAccess::open(font_path, FileAccess::READ);
if (!f) {
ERR_FAIL_V_MSG(nullptr, "Cannot open font file '" + font_path + "'.");
}
uint64_t len = f->get_length();
font_mem_cache.resize(len);
f->get_buffer(font_mem_cache.ptrw(), len);
font_mem = font_mem_cache.ptr();
font_mem_size = len;
f->close();
}
}
int error = 0;
fds = memnew(DataAtSize);
if (font_mem) {
memset(&fds->stream, 0, sizeof(FT_StreamRec));
fds->stream.base = (unsigned char *)font_mem;
fds->stream.size = font_mem_size;
fds->stream.pos = 0;
FT_Open_Args fargs;
memset(&fargs, 0, sizeof(FT_Open_Args));
fargs.memory_base = (unsigned char *)font_mem;
fargs.memory_size = font_mem_size;
fargs.flags = FT_OPEN_MEMORY;
fargs.stream = &fds->stream;
error = FT_Open_Face(library, &fargs, 0, &fds->face);
} else {
memdelete(fds);
ERR_FAIL_V_MSG(nullptr, "DynamicFont uninitialized.");
}
if (error == FT_Err_Unknown_File_Format) {
memdelete(fds);
ERR_FAIL_V_MSG(nullptr, "Unknown font format.");
} else if (error) {
memdelete(fds);
ERR_FAIL_V_MSG(nullptr, "Error loading font.");
}
oversampling = TS->font_get_oversampling();
if (FT_HAS_COLOR(fds->face) && fds->face->num_fixed_sizes > 0) {
int best_match = 0;
int diff = ABS(p_size - ((int64_t)fds->face->available_sizes[0].width));
fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[0].width;
for (int i = 1; i < fds->face->num_fixed_sizes; i++) {
int ndiff = ABS(p_size - ((int64_t)fds->face->available_sizes[i].width));
if (ndiff < diff) {
best_match = i;
diff = ndiff;
fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[i].width;
}
}
FT_Select_Size(fds->face, best_match);
} else {
FT_Set_Pixel_Sizes(fds->face, 0, p_size * oversampling);
}
fds->size = p_size;
fds->ascent = (fds->face->size->metrics.ascender / 64.0) / oversampling * fds->scale_color_font;
fds->descent = (-fds->face->size->metrics.descender / 64.0) / oversampling * fds->scale_color_font;
fds->underline_position = (-FT_MulFix(fds->face->underline_position, fds->face->size->metrics.y_scale) / 64.0) / oversampling * fds->scale_color_font;
fds->underline_thickness = (FT_MulFix(fds->face->underline_thickness, fds->face->size->metrics.y_scale) / 64.0) / oversampling * fds->scale_color_font;
//Load os2 TTF table
fds->os2 = (TT_OS2 *)FT_Get_Sfnt_Table(fds->face, FT_SFNT_OS2);
fds->hb_handle = hb_ft_font_create(fds->face, nullptr);
if (fds->hb_handle == nullptr) {
memdelete(fds);
ERR_FAIL_V_MSG(nullptr, "Error loading HB font.");
}
if (p_outline_size != 0) {
size_cache_outline[id] = fds;
} else {
size_cache[id] = fds;
}
// Write variations.
if (fds->face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
FT_MM_Var *amaster;
FT_Get_MM_Var(fds->face, &amaster);
Vector<hb_variation_t> hb_vars;
Vector<FT_Fixed> coords;
coords.resize(amaster->num_axis);
FT_Get_Var_Design_Coordinates(fds->face, coords.size(), coords.ptrw());
for (FT_UInt i = 0; i < amaster->num_axis; i++) {
hb_variation_t var;
// Reset to default.
var.tag = amaster->axis[i].tag;
var.value = (double)amaster->axis[i].def / 65536.f;
coords.write[i] = amaster->axis[i].def;
if (variations.has(var.tag)) {
var.value = variations[var.tag];
coords.write[i] = CLAMP(variations[var.tag] * 65536.f, amaster->axis[i].minimum, amaster->axis[i].maximum);
}
hb_vars.push_back(var);
}
FT_Set_Var_Design_Coordinates(fds->face, coords.size(), coords.ptrw());
hb_font_set_variations(fds->hb_handle, hb_vars.is_empty() ? nullptr : &hb_vars[0], hb_vars.size());
FT_Done_MM_Var(library, amaster);
}
}
return fds;
}
Dictionary DynamicFontDataAdvanced::get_variation_list() const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
if (fds == nullptr) {
return Dictionary();
}
Dictionary ret;
// Read variations.
if (fds->face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
FT_MM_Var *amaster;
FT_Get_MM_Var(fds->face, &amaster);
for (FT_UInt i = 0; i < amaster->num_axis; i++) {
ret[(int32_t)amaster->axis[i].tag] = Vector3i(amaster->axis[i].minimum / 65536, amaster->axis[i].maximum / 65536, amaster->axis[i].def / 65536);
}
FT_Done_MM_Var(library, amaster);
}
return ret;
}
void DynamicFontDataAdvanced::set_variation(const String &p_name, double p_value) {
_THREAD_SAFE_METHOD_
int32_t tag = TS->name_to_tag(p_name);
if (!variations.has(tag) || (variations[tag] != p_value)) {
variations[tag] = p_value;
clear_cache();
}
}
double DynamicFontDataAdvanced::get_variation(const String &p_name) const {
_THREAD_SAFE_METHOD_
int32_t tag = TS->name_to_tag(p_name);
if (!variations.has(tag)) {
return 0.f;
}
return variations[tag];
}
Dictionary DynamicFontDataAdvanced::get_feature_list() const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
if (fds == nullptr) {
return Dictionary();
}
Dictionary out;
// Read feature flags.
unsigned int count = hb_ot_layout_table_get_feature_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GSUB, 0, nullptr, nullptr);
if (count != 0) {
hb_tag_t *feature_tags = (hb_tag_t *)memalloc(count * sizeof(hb_tag_t));
hb_ot_layout_table_get_feature_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GSUB, 0, &count, feature_tags);
for (unsigned int i = 0; i < count; i++) {
out[feature_tags[i]] = 1;
}
memfree(feature_tags);
}
count = hb_ot_layout_table_get_feature_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GPOS, 0, nullptr, nullptr);
if (count != 0) {
hb_tag_t *feature_tags = (hb_tag_t *)memalloc(count * sizeof(hb_tag_t));
hb_ot_layout_table_get_feature_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GPOS, 0, &count, feature_tags);
for (unsigned int i = 0; i < count; i++) {
out[feature_tags[i]] = 1;
}
memfree(feature_tags);
}
return out;
}
DynamicFontDataAdvanced::TexturePosition DynamicFontDataAdvanced::find_texture_pos_for_glyph(DynamicFontDataAdvanced::DataAtSize *p_data, int p_color_size, Image::Format p_image_format, int p_width, int p_height) {
TexturePosition ret;
ret.index = -1;
int mw = p_width;
int mh = p_height;
for (int i = 0; i < p_data->textures.size(); i++) {
const CharTexture &ct = p_data->textures[i];
if (RenderingServer::get_singleton() != nullptr) {
if (ct.texture->get_format() != p_image_format) {
continue;
}
}
if (mw > ct.texture_size || mh > ct.texture_size) { //too big for this texture
continue;
}
ret.y = 0x7FFFFFFF;
ret.x = 0;
for (int j = 0; j < ct.texture_size - mw; j++) {
int max_y = 0;
for (int k = j; k < j + mw; k++) {
int y = ct.offsets[k];
if (y > max_y) {
max_y = y;
}
}
if (max_y < ret.y) {
ret.y = max_y;
ret.x = j;
}
}
if (ret.y == 0x7FFFFFFF || ret.y + mh > ct.texture_size) {
continue; //fail, could not fit it here
}
ret.index = i;
break;
}
if (ret.index == -1) {
//could not find texture to fit, create one
ret.x = 0;
ret.y = 0;
int texsize = MAX(p_data->size * oversampling * 8, 256);
if (mw > texsize) {
texsize = mw; //special case, adapt to it?
}
if (mh > texsize) {
texsize = mh; //special case, adapt to it?
}
texsize = next_power_of_2(texsize);
texsize = MIN(texsize, 4096);
CharTexture tex;
tex.texture_size = texsize;
tex.imgdata.resize(texsize * texsize * p_color_size); //grayscale alpha
{
//zero texture
uint8_t *w = tex.imgdata.ptrw();
ERR_FAIL_COND_V(texsize * texsize * p_color_size > tex.imgdata.size(), ret);
// Initialize the texture to all-white pixels to prevent artifacts when the
// font is displayed at a non-default scale with filtering enabled.
if (p_color_size == 2) {
for (int i = 0; i < texsize * texsize * p_color_size; i += 2) { // FORMAT_LA8
w[i + 0] = 255;
w[i + 1] = 0;
}
} else if (p_color_size == 4) {
for (int i = 0; i < texsize * texsize * p_color_size; i += 4) { // FORMAT_RGBA8
w[i + 0] = 255;
w[i + 1] = 255;
w[i + 2] = 255;
w[i + 3] = 0;
}
} else {
ERR_FAIL_V(ret);
}
}
tex.offsets.resize(texsize);
for (int i = 0; i < texsize; i++) { //zero offsets
tex.offsets.write[i] = 0;
}
p_data->textures.push_back(tex);
ret.index = p_data->textures.size() - 1;
}
return ret;
}
DynamicFontDataAdvanced::Character DynamicFontDataAdvanced::Character::not_found() {
Character ch;
return ch;
}
DynamicFontDataAdvanced::Character DynamicFontDataAdvanced::bitmap_to_character(DynamicFontDataAdvanced::DataAtSize *p_data, FT_Bitmap bitmap, int yofs, int xofs, const Vector2 &advance) {
int w = bitmap.width;
int h = bitmap.rows;
int mw = w + rect_margin * 2;
int mh = h + rect_margin * 2;
ERR_FAIL_COND_V(mw > 4096, Character::not_found());
ERR_FAIL_COND_V(mh > 4096, Character::not_found());
int color_size = bitmap.pixel_mode == FT_PIXEL_MODE_BGRA ? 4 : 2;
Image::Format require_format = color_size == 4 ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8;
TexturePosition tex_pos = find_texture_pos_for_glyph(p_data, color_size, require_format, mw, mh);
ERR_FAIL_COND_V(tex_pos.index < 0, Character::not_found());
//fit character in char texture
CharTexture &tex = p_data->textures.write[tex_pos.index];
{
uint8_t *wr = tex.imgdata.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs = ((i + tex_pos.y + rect_margin) * tex.texture_size + j + tex_pos.x + rect_margin) * color_size;
ERR_FAIL_COND_V(ofs >= tex.imgdata.size(), Character::not_found());
switch (bitmap.pixel_mode) {
case FT_PIXEL_MODE_MONO: {
int byte = i * bitmap.pitch + (j >> 3);
int bit = 1 << (7 - (j % 8));
wr[ofs + 0] = 255; //grayscale as 1
wr[ofs + 1] = (bitmap.buffer[byte] & bit) ? 255 : 0;
} break;
case FT_PIXEL_MODE_GRAY:
wr[ofs + 0] = 255; //grayscale as 1
wr[ofs + 1] = bitmap.buffer[i * bitmap.pitch + j];
break;
case FT_PIXEL_MODE_BGRA: {
int ofs_color = i * bitmap.pitch + (j << 2);
wr[ofs + 2] = bitmap.buffer[ofs_color + 0];
wr[ofs + 1] = bitmap.buffer[ofs_color + 1];
wr[ofs + 0] = bitmap.buffer[ofs_color + 2];
wr[ofs + 3] = bitmap.buffer[ofs_color + 3];
} break;
// TODO: FT_PIXEL_MODE_LCD
default:
ERR_FAIL_V_MSG(Character::not_found(), "Font uses unsupported pixel format: " + itos(bitmap.pixel_mode) + ".");
break;
}
}
}
}
//blit to image and texture
{
if (RenderingServer::get_singleton() != nullptr) {
Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, require_format, tex.imgdata));
if (tex.texture.is_null()) {
tex.texture.instance();
tex.texture->create_from_image(img);
} else {
tex.texture->update(img); //update
}
}
}
// update height array
for (int k = tex_pos.x; k < tex_pos.x + mw; k++) {
tex.offsets.write[k] = tex_pos.y + mh;
}
Character chr;
chr.align = (Vector2(xofs, -yofs) * p_data->scale_color_font / oversampling).round();
chr.advance = (advance * p_data->scale_color_font / oversampling).round();
chr.texture_idx = tex_pos.index;
chr.found = true;
chr.rect_uv = Rect2(tex_pos.x + rect_margin, tex_pos.y + rect_margin, w, h);
chr.rect = chr.rect_uv;
chr.rect.position /= oversampling;
chr.rect.size *= (p_data->scale_color_font / oversampling);
return chr;
}
void DynamicFontDataAdvanced::update_glyph(int p_size, uint32_t p_index) {
DataAtSize *fds = get_data_for_size(p_size, false);
ERR_FAIL_COND(fds == nullptr);
if (fds->glyph_map.has(p_index)) {
return;
}
Character character = Character::not_found();
FT_GlyphSlot slot = fds->face->glyph;
if (p_index == 0) {
fds->glyph_map[p_index] = character;
return;
}
int ft_hinting;
switch (hinting) {
case TextServer::HINTING_NONE:
ft_hinting = FT_LOAD_NO_HINTING;
break;
case TextServer::HINTING_LIGHT:
ft_hinting = FT_LOAD_TARGET_LIGHT;
break;
default:
ft_hinting = FT_LOAD_TARGET_NORMAL;
break;
}
FT_Fixed v, h;
FT_Get_Advance(fds->face, p_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting, &h);
FT_Get_Advance(fds->face, p_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting | FT_LOAD_VERTICAL_LAYOUT, &v);
int error = FT_Load_Glyph(fds->face, p_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting);
if (error) {
fds->glyph_map[p_index] = character;
return;
}
error = FT_Render_Glyph(fds->face->glyph, antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
if (!error) {
character = bitmap_to_character(fds, slot->bitmap, slot->bitmap_top, slot->bitmap_left, Vector2((h + (1 << 9)) >> 10, (v + (1 << 9)) >> 10) / 64.0);
}
fds->glyph_map[p_index] = character;
}
void DynamicFontDataAdvanced::update_glyph_outline(int p_size, int p_outline_size, uint32_t p_index) {
DataAtSize *fds = get_data_for_size(p_size, p_outline_size);
ERR_FAIL_COND(fds == nullptr);
if (fds->glyph_map.has(p_index)) {
return;
}
Character character = Character::not_found();
if (p_index == 0) {
fds->glyph_map[p_index] = character;
return;
}
int error = FT_Load_Glyph(fds->face, p_index, FT_LOAD_NO_BITMAP | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
if (error) {
fds->glyph_map[p_index] = character;
return;
}
FT_Stroker stroker;
if (FT_Stroker_New(library, &stroker) != 0) {
fds->glyph_map[p_index] = character;
return;
}
FT_Stroker_Set(stroker, (int)(p_outline_size * oversampling * 64.0), FT_STROKER_LINECAP_BUTT, FT_STROKER_LINEJOIN_ROUND, 0);
FT_Glyph glyph;
FT_BitmapGlyph glyph_bitmap;
if (FT_Get_Glyph(fds->face->glyph, &glyph) != 0) {
goto cleanup_stroker;
}
if (FT_Glyph_Stroke(&glyph, stroker, 1) != 0) {
goto cleanup_glyph;
}
if (FT_Glyph_To_Bitmap(&glyph, antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO, nullptr, 1) != 0) {
goto cleanup_glyph;
}
glyph_bitmap = (FT_BitmapGlyph)glyph;
character = bitmap_to_character(fds, glyph_bitmap->bitmap, glyph_bitmap->top, glyph_bitmap->left, Vector2());
cleanup_glyph:
FT_Done_Glyph(glyph);
cleanup_stroker:
FT_Stroker_Done(stroker);
fds->glyph_map[p_index] = character;
}
void DynamicFontDataAdvanced::clear_cache() {
_THREAD_SAFE_METHOD_
for (Map<CacheID, DataAtSize *>::Element *E = size_cache.front(); E; E = E->next()) {
memdelete(E->get());
}
size_cache.clear();
for (Map<CacheID, DataAtSize *>::Element *E = size_cache_outline.front(); E; E = E->next()) {
memdelete(E->get());
}
size_cache_outline.clear();
}
Error DynamicFontDataAdvanced::load_from_file(const String &p_filename, int p_base_size) {
_THREAD_SAFE_METHOD_
if (library == nullptr) {
int error = FT_Init_FreeType(&library);
ERR_FAIL_COND_V_MSG(error != 0, ERR_CANT_CREATE, "Error initializing FreeType.");
}
clear_cache();
font_path = p_filename;
base_size = p_base_size;
valid = true;
DataAtSize *fds = get_data_for_size(base_size); // load base size.
if (fds == nullptr) {
valid = false;
ERR_FAIL_V(ERR_CANT_CREATE);
}
return OK;
}
Error DynamicFontDataAdvanced::load_from_memory(const uint8_t *p_data, size_t p_size, int p_base_size) {
_THREAD_SAFE_METHOD_
if (library == nullptr) {
int error = FT_Init_FreeType(&library);
ERR_FAIL_COND_V_MSG(error != 0, ERR_CANT_CREATE, "Error initializing FreeType.");
}
clear_cache();
font_mem = p_data;
font_mem_size = p_size;
base_size = p_base_size;
valid = true;
DataAtSize *fds = get_data_for_size(base_size); // load base size.
if (fds == nullptr) {
valid = false;
ERR_FAIL_V(ERR_CANT_CREATE);
}
return OK;
}
float DynamicFontDataAdvanced::get_height(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 0.f);
return fds->ascent + fds->descent;
}
float DynamicFontDataAdvanced::get_ascent(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 0.f);
return fds->ascent;
}
float DynamicFontDataAdvanced::get_descent(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 0.f);
return fds->descent;
}
float DynamicFontDataAdvanced::get_underline_position(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 0.f);
return fds->underline_position;
}
float DynamicFontDataAdvanced::get_underline_thickness(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 0.f);
return fds->underline_thickness;
}
bool DynamicFontDataAdvanced::is_script_supported(uint32_t p_script) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
ERR_FAIL_COND_V(fds == nullptr, false);
unsigned int count = hb_ot_layout_table_get_script_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GSUB, 0, nullptr, nullptr);
if (count != 0) {
hb_tag_t *script_tags = (hb_tag_t *)memalloc(count * sizeof(hb_tag_t));
hb_ot_layout_table_get_script_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GSUB, 0, &count, script_tags);
for (unsigned int i = 0; i < count; i++) {
if (p_script == script_tags[i]) {
memfree(script_tags);
return true;
}
}
memfree(script_tags);
}
count = hb_ot_layout_table_get_script_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GPOS, 0, nullptr, nullptr);
if (count != 0) {
hb_tag_t *script_tags = (hb_tag_t *)memalloc(count * sizeof(hb_tag_t));
hb_ot_layout_table_get_script_tags(hb_font_get_face(fds->hb_handle), HB_OT_TAG_GPOS, 0, &count, script_tags);
for (unsigned int i = 0; i < count; i++) {
if (p_script == script_tags[i]) {
memfree(script_tags);
return true;
}
}
memfree(script_tags);
}
if (!fds->os2) {
return false;
}
switch (p_script) {
case HB_SCRIPT_COMMON:
return (fds->os2->ulUnicodeRange1 & 1L << 4) || (fds->os2->ulUnicodeRange1 & 1L << 5) || (fds->os2->ulUnicodeRange1 & 1L << 6) || (fds->os2->ulUnicodeRange1 & 1L << 31) || (fds->os2->ulUnicodeRange2 & 1L << 0) || (fds->os2->ulUnicodeRange2 & 1L << 1) || (fds->os2->ulUnicodeRange2 & 1L << 2) || (fds->os2->ulUnicodeRange2 & 1L << 3) || (fds->os2->ulUnicodeRange2 & 1L << 4) || (fds->os2->ulUnicodeRange2 & 1L << 5) || (fds->os2->ulUnicodeRange2 & 1L << 6) || (fds->os2->ulUnicodeRange2 & 1L << 7) || (fds->os2->ulUnicodeRange2 & 1L << 8) || (fds->os2->ulUnicodeRange2 & 1L << 9) || (fds->os2->ulUnicodeRange2 & 1L << 10) || (fds->os2->ulUnicodeRange2 & 1L << 11) || (fds->os2->ulUnicodeRange2 & 1L << 12) || (fds->os2->ulUnicodeRange2 & 1L << 13) || (fds->os2->ulUnicodeRange2 & 1L << 14) || (fds->os2->ulUnicodeRange2 & 1L << 15) || (fds->os2->ulUnicodeRange2 & 1L << 30) || (fds->os2->ulUnicodeRange3 & 1L << 0) || (fds->os2->ulUnicodeRange3 & 1L << 1) || (fds->os2->ulUnicodeRange3 & 1L << 2) || (fds->os2->ulUnicodeRange3 & 1L << 4) || (fds->os2->ulUnicodeRange3 & 1L << 5) || (fds->os2->ulUnicodeRange3 & 1L << 18) || (fds->os2->ulUnicodeRange3 & 1L << 24) || (fds->os2->ulUnicodeRange3 & 1L << 25) || (fds->os2->ulUnicodeRange3 & 1L << 26) || (fds->os2->ulUnicodeRange3 & 1L << 27) || (fds->os2->ulUnicodeRange3 & 1L << 28) || (fds->os2->ulUnicodeRange4 & 1L << 3) || (fds->os2->ulUnicodeRange4 & 1L << 6) || (fds->os2->ulUnicodeRange4 & 1L << 15) || (fds->os2->ulUnicodeRange4 & 1L << 23) || (fds->os2->ulUnicodeRange4 & 1L << 24) || (fds->os2->ulUnicodeRange4 & 1L << 26);
case HB_SCRIPT_LATIN:
return (fds->os2->ulUnicodeRange1 & 1L << 0) || (fds->os2->ulUnicodeRange1 & 1L << 1) || (fds->os2->ulUnicodeRange1 & 1L << 2) || (fds->os2->ulUnicodeRange1 & 1L << 3) || (fds->os2->ulUnicodeRange1 & 1L << 29);
case HB_SCRIPT_GREEK:
return (fds->os2->ulUnicodeRange1 & 1L << 7) || (fds->os2->ulUnicodeRange1 & 1L << 30);
case HB_SCRIPT_COPTIC:
return (fds->os2->ulUnicodeRange1 & 1L << 8);
case HB_SCRIPT_CYRILLIC:
return (fds->os2->ulUnicodeRange1 & 1L << 9);
case HB_SCRIPT_ARMENIAN:
return (fds->os2->ulUnicodeRange1 & 1L << 10);
case HB_SCRIPT_HEBREW:
return (fds->os2->ulUnicodeRange1 & 1L << 11);
case HB_SCRIPT_VAI:
return (fds->os2->ulUnicodeRange1 & 1L << 12);
case HB_SCRIPT_ARABIC:
return (fds->os2->ulUnicodeRange1 & 1L << 13) || (fds->os2->ulUnicodeRange2 & 1L << 31) || (fds->os2->ulUnicodeRange3 & 1L << 3);
case HB_SCRIPT_NKO:
return (fds->os2->ulUnicodeRange1 & 1L << 14);
case HB_SCRIPT_DEVANAGARI:
return (fds->os2->ulUnicodeRange1 & 1L << 15);
case HB_SCRIPT_BENGALI:
return (fds->os2->ulUnicodeRange1 & 1L << 16);
case HB_SCRIPT_GURMUKHI:
return (fds->os2->ulUnicodeRange1 & 1L << 17);
case HB_SCRIPT_GUJARATI:
return (fds->os2->ulUnicodeRange1 & 1L << 18);
case HB_SCRIPT_ORIYA:
return (fds->os2->ulUnicodeRange1 & 1L << 19);
case HB_SCRIPT_TAMIL:
return (fds->os2->ulUnicodeRange1 & 1L << 20);
case HB_SCRIPT_TELUGU:
return (fds->os2->ulUnicodeRange1 & 1L << 21);
case HB_SCRIPT_KANNADA:
return (fds->os2->ulUnicodeRange1 & 1L << 22);
case HB_SCRIPT_MALAYALAM:
return (fds->os2->ulUnicodeRange1 & 1L << 23);
case HB_SCRIPT_THAI:
return (fds->os2->ulUnicodeRange1 & 1L << 24);
case HB_SCRIPT_LAO:
return (fds->os2->ulUnicodeRange1 & 1L << 25);
case HB_SCRIPT_GEORGIAN:
return (fds->os2->ulUnicodeRange1 & 1L << 26);
case HB_SCRIPT_BALINESE:
return (fds->os2->ulUnicodeRange1 & 1L << 27);
case HB_SCRIPT_HANGUL:
return (fds->os2->ulUnicodeRange1 & 1L << 28) || (fds->os2->ulUnicodeRange2 & 1L << 20) || (fds->os2->ulUnicodeRange2 & 1L << 24);
case HB_SCRIPT_HAN:
return (fds->os2->ulUnicodeRange2 & 1L << 21) || (fds->os2->ulUnicodeRange2 & 1L << 22) || (fds->os2->ulUnicodeRange2 & 1L << 23) || (fds->os2->ulUnicodeRange2 & 1L << 26) || (fds->os2->ulUnicodeRange2 & 1L << 27) || (fds->os2->ulUnicodeRange2 & 1L << 29);
case HB_SCRIPT_HIRAGANA:
return (fds->os2->ulUnicodeRange2 & 1L << 17);
case HB_SCRIPT_KATAKANA:
return (fds->os2->ulUnicodeRange2 & 1L << 18);
case HB_SCRIPT_BOPOMOFO:
return (fds->os2->ulUnicodeRange2 & 1L << 19);
case HB_SCRIPT_TIBETAN:
return (fds->os2->ulUnicodeRange3 & 1L << 6);
case HB_SCRIPT_SYRIAC:
return (fds->os2->ulUnicodeRange3 & 1L << 7);
case HB_SCRIPT_THAANA:
return (fds->os2->ulUnicodeRange3 & 1L << 8);
case HB_SCRIPT_SINHALA:
return (fds->os2->ulUnicodeRange3 & 1L << 9);
case HB_SCRIPT_MYANMAR:
return (fds->os2->ulUnicodeRange3 & 1L << 10);
case HB_SCRIPT_ETHIOPIC:
return (fds->os2->ulUnicodeRange3 & 1L << 11);
case HB_SCRIPT_CHEROKEE:
return (fds->os2->ulUnicodeRange3 & 1L << 12);
case HB_SCRIPT_CANADIAN_SYLLABICS:
return (fds->os2->ulUnicodeRange3 & 1L << 13);
case HB_SCRIPT_OGHAM:
return (fds->os2->ulUnicodeRange3 & 1L << 14);
case HB_SCRIPT_RUNIC:
return (fds->os2->ulUnicodeRange3 & 1L << 15);
case HB_SCRIPT_KHMER:
return (fds->os2->ulUnicodeRange3 & 1L << 16);
case HB_SCRIPT_MONGOLIAN:
return (fds->os2->ulUnicodeRange3 & 1L << 17);
case HB_SCRIPT_YI:
return (fds->os2->ulUnicodeRange3 & 1L << 19);
case HB_SCRIPT_HANUNOO:
case HB_SCRIPT_TAGBANWA:
case HB_SCRIPT_BUHID:
case HB_SCRIPT_TAGALOG:
return (fds->os2->ulUnicodeRange3 & 1L << 20);
case HB_SCRIPT_OLD_ITALIC:
return (fds->os2->ulUnicodeRange3 & 1L << 21);
case HB_SCRIPT_GOTHIC:
return (fds->os2->ulUnicodeRange3 & 1L << 22);
case HB_SCRIPT_DESERET:
return (fds->os2->ulUnicodeRange3 & 1L << 23);
case HB_SCRIPT_LIMBU:
return (fds->os2->ulUnicodeRange3 & 1L << 29);
case HB_SCRIPT_TAI_LE:
return (fds->os2->ulUnicodeRange3 & 1L << 30);
case HB_SCRIPT_NEW_TAI_LUE:
return (fds->os2->ulUnicodeRange3 & 1L << 31);
case HB_SCRIPT_BUGINESE:
return (fds->os2->ulUnicodeRange4 & 1L << 0);
case HB_SCRIPT_GLAGOLITIC:
return (fds->os2->ulUnicodeRange4 & 1L << 1);
case HB_SCRIPT_TIFINAGH:
return (fds->os2->ulUnicodeRange4 & 1L << 2);
case HB_SCRIPT_SYLOTI_NAGRI:
return (fds->os2->ulUnicodeRange4 & 1L << 4);
case HB_SCRIPT_LINEAR_B:
return (fds->os2->ulUnicodeRange4 & 1L << 5);
case HB_SCRIPT_UGARITIC:
return (fds->os2->ulUnicodeRange4 & 1L << 7);
case HB_SCRIPT_OLD_PERSIAN:
return (fds->os2->ulUnicodeRange4 & 1L << 8);
case HB_SCRIPT_SHAVIAN:
return (fds->os2->ulUnicodeRange4 & 1L << 9);
case HB_SCRIPT_OSMANYA:
return (fds->os2->ulUnicodeRange4 & 1L << 10);
case HB_SCRIPT_CYPRIOT:
return (fds->os2->ulUnicodeRange4 & 1L << 11);
case HB_SCRIPT_KHAROSHTHI:
return (fds->os2->ulUnicodeRange4 & 1L << 12);
case HB_SCRIPT_TAI_VIET:
return (fds->os2->ulUnicodeRange4 & 1L << 13);
case HB_SCRIPT_CUNEIFORM:
return (fds->os2->ulUnicodeRange4 & 1L << 14);
case HB_SCRIPT_SUNDANESE:
return (fds->os2->ulUnicodeRange4 & 1L << 16);
case HB_SCRIPT_LEPCHA:
return (fds->os2->ulUnicodeRange4 & 1L << 17);
case HB_SCRIPT_OL_CHIKI:
return (fds->os2->ulUnicodeRange4 & 1L << 18);
case HB_SCRIPT_SAURASHTRA:
return (fds->os2->ulUnicodeRange4 & 1L << 19);
case HB_SCRIPT_KAYAH_LI:
return (fds->os2->ulUnicodeRange4 & 1L << 20);
case HB_SCRIPT_REJANG:
return (fds->os2->ulUnicodeRange4 & 1L << 21);
case HB_SCRIPT_CHAM:
return (fds->os2->ulUnicodeRange4 & 1L << 22);
case HB_SCRIPT_ANATOLIAN_HIEROGLYPHS:
return (fds->os2->ulUnicodeRange4 & 1L << 25);
default:
return false;
};
}
void DynamicFontDataAdvanced::set_antialiased(bool p_antialiased) {
if (antialiased != p_antialiased) {
clear_cache();
antialiased = p_antialiased;
}
}
bool DynamicFontDataAdvanced::get_antialiased() const {
return antialiased;
}
void DynamicFontDataAdvanced::set_force_autohinter(bool p_enabled) {
if (force_autohinter != p_enabled) {
clear_cache();
force_autohinter = p_enabled;
}
}
bool DynamicFontDataAdvanced::get_force_autohinter() const {
return force_autohinter;
}
void DynamicFontDataAdvanced::set_hinting(TextServer::Hinting p_hinting) {
if (hinting != p_hinting) {
clear_cache();
hinting = p_hinting;
}
}
TextServer::Hinting DynamicFontDataAdvanced::get_hinting() const {
return hinting;
}
bool DynamicFontDataAdvanced::has_outline() const {
return true;
}
float DynamicFontDataAdvanced::get_base_size() const {
return base_size;
}
String DynamicFontDataAdvanced::get_supported_chars() const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
ERR_FAIL_COND_V(fds == nullptr, String());
String chars;
FT_UInt gindex;
FT_ULong charcode = FT_Get_First_Char(fds->face, &gindex);
while (gindex != 0) {
if (charcode != 0) {
chars += char32_t(charcode);
}
charcode = FT_Get_Next_Char(fds->face, charcode, &gindex);
}
return chars;
}
float DynamicFontDataAdvanced::get_font_scale(int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, 1.0f);
return fds->scale_color_font / oversampling;
}
bool DynamicFontDataAdvanced::has_char(char32_t p_char) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
ERR_FAIL_COND_V(fds == nullptr, false);
const_cast<DynamicFontDataAdvanced *>(this)->update_glyph(base_size, FT_Get_Char_Index(fds->face, p_char));
Character ch = fds->glyph_map[FT_Get_Char_Index(fds->face, p_char)];
return (ch.found);
}
hb_font_t *DynamicFontDataAdvanced::get_hb_handle(int p_size) {
_THREAD_SAFE_METHOD_
DataAtSize *fds = get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, nullptr);
return fds->hb_handle;
}
uint32_t DynamicFontDataAdvanced::get_glyph_index(char32_t p_char, char32_t p_variation_selector) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(base_size);
ERR_FAIL_COND_V(fds == nullptr, 0);
if (p_variation_selector == 0x0000) {
return FT_Get_Char_Index(fds->face, p_char);
} else {
return FT_Face_GetCharVariantIndex(fds->face, p_char, p_variation_selector);
}
}
Vector2 DynamicFontDataAdvanced::get_advance(uint32_t p_index, int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, Vector2());
const_cast<DynamicFontDataAdvanced *>(this)->update_glyph(p_size, p_index);
Character ch = fds->glyph_map[p_index];
return ch.advance;
}
Vector2 DynamicFontDataAdvanced::get_kerning(uint32_t p_char, uint32_t p_next, int p_size) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, Vector2());
FT_Vector delta;
FT_Get_Kerning(fds->face, p_char, p_next, FT_KERNING_DEFAULT, &delta);
return Vector2(delta.x, delta.y);
}
Vector2 DynamicFontDataAdvanced::draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, Vector2());
const_cast<DynamicFontDataAdvanced *>(this)->update_glyph(p_size, p_index);
Character ch = fds->glyph_map[p_index];
Vector2 advance;
if (ch.found) {
ERR_FAIL_COND_V(ch.texture_idx < -1 || ch.texture_idx >= fds->textures.size(), Vector2());
if (ch.texture_idx != -1) {
Point2i cpos = p_pos;
cpos += ch.align;
Color modulate = p_color;
if (FT_HAS_COLOR(fds->face)) {
modulate.r = modulate.g = modulate.b = 1.0;
}
if (RenderingServer::get_singleton() != nullptr) {
RID texture = fds->textures[ch.texture_idx].texture->get_rid();
RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas, Rect2(cpos, ch.rect.size), texture, ch.rect_uv, modulate, false, false);
}
}
advance = ch.advance;
}
return advance;
}
Vector2 DynamicFontDataAdvanced::draw_glyph_outline(RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size, p_outline_size);
ERR_FAIL_COND_V(fds == nullptr, Vector2());
const_cast<DynamicFontDataAdvanced *>(this)->update_glyph_outline(p_size, p_outline_size, p_index);
Character ch = fds->glyph_map[p_index];
Vector2 advance;
if (ch.found) {
ERR_FAIL_COND_V(ch.texture_idx < -1 || ch.texture_idx >= fds->textures.size(), Vector2());
if (ch.texture_idx != -1) {
Point2i cpos = p_pos;
cpos += ch.align;
Color modulate = p_color;
if (FT_HAS_COLOR(fds->face)) {
modulate.r = modulate.g = modulate.b = 1.0;
}
if (RenderingServer::get_singleton() != nullptr) {
RID texture = fds->textures[ch.texture_idx].texture->get_rid();
RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas, Rect2(cpos, ch.rect.size), texture, ch.rect_uv, modulate, false, false);
}
}
advance = ch.advance;
}
return advance;
}
bool DynamicFontDataAdvanced::get_glyph_contours(int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const {
_THREAD_SAFE_METHOD_
DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
ERR_FAIL_COND_V(fds == nullptr, false);
int error = FT_Load_Glyph(fds->face, p_index, FT_LOAD_NO_BITMAP | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
ERR_FAIL_COND_V(error, false);
r_points.clear();
r_contours.clear();
float h = fds->ascent;
float scale = (1.0 / 64.0) / oversampling * fds->scale_color_font;
for (short i = 0; i < fds->face->glyph->outline.n_points; i++) {
r_points.push_back(Vector3(fds->face->glyph->outline.points[i].x * scale, h - fds->face->glyph->outline.points[i].y * scale, FT_CURVE_TAG(fds->face->glyph->outline.tags[i])));
}
for (short i = 0; i < fds->face->glyph->outline.n_contours; i++) {
r_contours.push_back(fds->face->glyph->outline.contours[i]);
}
r_orientation = (FT_Outline_Get_Orientation(&fds->face->glyph->outline) == FT_ORIENTATION_FILL_RIGHT);
return true;
}
DynamicFontDataAdvanced::~DynamicFontDataAdvanced() {
clear_cache();
if (library != nullptr) {
FT_Done_FreeType(library);
}
}
#endif // MODULE_FREETYPE_ENABLED
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