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pandemonium_engine/scene/resources/dynamic_font.cpp

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/*************************************************************************/
/* dynamic_font.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "modules/modules_enabled.gen.h" // For freetype.
#ifdef MODULE_FREETYPE_ENABLED
#include "dynamic_font.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include FT_STROKER_H
#define __STDC_LIMIT_MACROS
#include <stdint.h>
bool DynamicFontData::CacheID::operator<(CacheID right) const {
return key < right.key;
}
Ref<DynamicFontAtSize> DynamicFontData::_get_dynamic_font_at_size(CacheID p_cache_id) {
if (size_cache.has(p_cache_id)) {
return Ref<DynamicFontAtSize>(size_cache[p_cache_id]);
}
Ref<DynamicFontAtSize> dfas;
dfas.instance();
dfas->font = Ref<DynamicFontData>(this);
dfas->oversampling = (override_oversampling > 0) ? override_oversampling : DynamicFontAtSize::font_oversampling;
size_cache[p_cache_id] = dfas.ptr();
dfas->id = p_cache_id;
dfas->_load();
return dfas;
}
void DynamicFontData::set_font_ptr(const uint8_t *p_font_mem, int p_font_mem_size) {
font_mem = p_font_mem;
font_mem_size = p_font_mem_size;
}
void DynamicFontData::set_font_path(const String &p_path) {
font_path = p_path;
}
String DynamicFontData::get_font_path() const {
return font_path;
}
void DynamicFontData::set_force_autohinter(bool p_force) {
force_autohinter = p_force;
}
float DynamicFontData::get_override_oversampling() const {
return override_oversampling;
}
void DynamicFontData::set_override_oversampling(float p_oversampling) {
if (override_oversampling == p_oversampling) {
return;
}
override_oversampling = p_oversampling;
DynamicFont::update_oversampling();
}
void DynamicFontData::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_antialiased", "antialiased"), &DynamicFontData::set_antialiased);
ClassDB::bind_method(D_METHOD("is_antialiased"), &DynamicFontData::is_antialiased);
ClassDB::bind_method(D_METHOD("set_font_path", "path"), &DynamicFontData::set_font_path);
ClassDB::bind_method(D_METHOD("get_font_path"), &DynamicFontData::get_font_path);
ClassDB::bind_method(D_METHOD("set_hinting", "mode"), &DynamicFontData::set_hinting);
ClassDB::bind_method(D_METHOD("get_hinting"), &DynamicFontData::get_hinting);
ClassDB::bind_method(D_METHOD("get_override_oversampling"), &DynamicFontData::get_override_oversampling);
ClassDB::bind_method(D_METHOD("set_override_oversampling", "oversampling"), &DynamicFontData::set_override_oversampling);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "antialiased"), "set_antialiased", "is_antialiased");
ADD_PROPERTY(PropertyInfo(Variant::INT, "hinting", PROPERTY_HINT_ENUM, "None,Light,Normal"), "set_hinting", "get_hinting");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "override_oversampling"), "set_override_oversampling", "get_override_oversampling");
BIND_ENUM_CONSTANT(HINTING_NONE);
BIND_ENUM_CONSTANT(HINTING_LIGHT);
BIND_ENUM_CONSTANT(HINTING_NORMAL);
// Only WOFF1 is supported as WOFF2 requires a Brotli decompression library to be linked.
ADD_PROPERTY(PropertyInfo(Variant::STRING, "font_path", PROPERTY_HINT_FILE, "*.ttf,*.otf,*.woff"), "set_font_path", "get_font_path");
}
DynamicFontData::DynamicFontData() {
antialiased = true;
force_autohinter = false;
hinting = DynamicFontData::HINTING_NORMAL;
font_mem = nullptr;
font_mem_size = 0;
override_oversampling = 0.0;
}
DynamicFontData::~DynamicFontData() {
}
////////////////////
Error DynamicFontAtSize::_load() {
int error = FT_Init_FreeType(&library);
ERR_FAIL_COND_V_MSG(error != 0, ERR_CANT_CREATE, "Error initializing FreeType.");
if (font->font_mem == nullptr && font->font_path != String()) {
FileAccess *f = FileAccess::open(font->font_path, FileAccess::READ);
if (!f) {
FT_Done_FreeType(library);
ERR_FAIL_V_MSG(ERR_CANT_OPEN, "Cannot open font file '" + font->font_path + "'.");
}
uint64_t len = f->get_len();
font->_fontdata = Vector<uint8_t>();
font->_fontdata.resize(len);
f->get_buffer(font->_fontdata.ptrw(), len);
font->set_font_ptr(font->_fontdata.ptr(), len);
f->close();
memdelete(f);
}
if (font->font_mem) {
memset(&stream, 0, sizeof(FT_StreamRec));
stream.base = (unsigned char *)font->font_mem;
stream.size = font->font_mem_size;
stream.pos = 0;
FT_Open_Args fargs;
memset(&fargs, 0, sizeof(FT_Open_Args));
fargs.memory_base = (unsigned char *)font->font_mem;
fargs.memory_size = font->font_mem_size;
fargs.flags = FT_OPEN_MEMORY;
fargs.stream = &stream;
error = FT_Open_Face(library, &fargs, 0, &face);
} else {
FT_Done_FreeType(library);
ERR_FAIL_V_MSG(ERR_UNCONFIGURED, "DynamicFont uninitialized.");
}
//error = FT_New_Face( library, src_path.utf8().get_data(),0,&face );
if (error == FT_Err_Unknown_File_Format) {
FT_Done_FreeType(library);
ERR_FAIL_V_MSG(ERR_FILE_CANT_OPEN, "Unknown font format.");
} else if (error) {
FT_Done_FreeType(library);
ERR_FAIL_V_MSG(ERR_FILE_CANT_OPEN, "Error loading font.");
}
if (FT_HAS_COLOR(face) && face->num_fixed_sizes > 0) {
int best_match = 0;
int diff = ABS(id.size - ((int64_t)face->available_sizes[0].width));
scale_color_font = float(id.size * oversampling) / face->available_sizes[0].width;
for (int i = 1; i < face->num_fixed_sizes; i++) {
int ndiff = ABS(id.size - ((int64_t)face->available_sizes[i].width));
if (ndiff < diff) {
best_match = i;
diff = ndiff;
scale_color_font = float(id.size * oversampling) / face->available_sizes[i].width;
}
}
FT_Select_Size(face, best_match);
} else {
FT_Set_Pixel_Sizes(face, 0, id.size * oversampling);
}
ascent = (face->size->metrics.ascender / 64.0) / oversampling * scale_color_font;
descent = (-face->size->metrics.descender / 64.0) / oversampling * scale_color_font;
linegap = 0;
texture_flags = 0;
if (id.mipmaps) {
texture_flags |= Texture::FLAG_MIPMAPS;
}
if (id.filter) {
texture_flags |= Texture::FLAG_FILTER;
}
valid = true;
return OK;
}
float DynamicFontAtSize::font_oversampling = 1.0;
float DynamicFontAtSize::get_height() const {
return ascent + descent;
}
float DynamicFontAtSize::get_ascent() const {
return ascent;
}
float DynamicFontAtSize::get_descent() const {
return descent;
}
const Pair<const DynamicFontAtSize::Character *, DynamicFontAtSize *> DynamicFontAtSize::_find_char_with_font(int32_t p_char, const Vector<Ref<DynamicFontAtSize>> &p_fallbacks) const {
const Character *chr = char_map.getptr(p_char);
ERR_FAIL_COND_V(!chr, (Pair<const Character *, DynamicFontAtSize *>(NULL, NULL)));
if (!chr->found) {
//not found, try in fallbacks
for (int i = 0; i < p_fallbacks.size(); i++) {
DynamicFontAtSize *fb = const_cast<DynamicFontAtSize *>(p_fallbacks[i].ptr());
if (!fb->valid) {
continue;
}
fb->_update_char(p_char);
const Character *fallback_chr = fb->char_map.getptr(p_char);
ERR_CONTINUE(!fallback_chr);
if (!fallback_chr->found) {
continue;
}
return Pair<const Character *, DynamicFontAtSize *>(fallback_chr, fb);
}
//not found, try 0xFFFD to display 'not found'.
const_cast<DynamicFontAtSize *>(this)->_update_char(0xFFFD);
chr = char_map.getptr(0xFFFD);
ERR_FAIL_COND_V(!chr, (Pair<const Character *, DynamicFontAtSize *>(NULL, NULL)));
}
return Pair<const Character *, DynamicFontAtSize *>(chr, const_cast<DynamicFontAtSize *>(this));
}
float DynamicFontAtSize::_get_kerning_advance(const DynamicFontAtSize *font, int32_t p_char, int32_t p_next) const {
float advance = 0.0;
if (p_next) {
FT_Vector delta;
FT_Get_Kerning(font->face, FT_Get_Char_Index(font->face, p_char), FT_Get_Char_Index(font->face, p_next), FT_KERNING_DEFAULT, &delta);
advance = (delta.x / 64.0) / oversampling;
}
return advance;
}
Size2 DynamicFontAtSize::get_char_size(CharType p_char, CharType p_next, const Vector<Ref<DynamicFontAtSize>> &p_fallbacks) const {
if (!valid) {
return Size2(1, 1);
}
int32_t c = p_char;
bool skip_kerning = false;
if (((p_char & 0xfffffc00) == 0xd800) && (p_next & 0xfffffc00) == 0xdc00) { // decode surrogate pair.
c = (p_char << 10UL) + p_next - ((0xd800 << 10UL) + 0xdc00 - 0x10000);
skip_kerning = true;
}
if ((p_char & 0xfffffc00) == 0xdc00) { // skip trail surrogate.
return Size2();
}
const_cast<DynamicFontAtSize *>(this)->_update_char(c);
Pair<const Character *, DynamicFontAtSize *> char_pair_with_font = _find_char_with_font(c, p_fallbacks);
const Character *ch = char_pair_with_font.first;
DynamicFontAtSize *font = char_pair_with_font.second;
ERR_FAIL_COND_V(!ch, Size2());
Size2 ret(0, get_height());
if (ch->found) {
ret.x = ch->advance;
}
if (!skip_kerning) {
ret.x += _get_kerning_advance(font, p_char, p_next);
}
return ret;
}
String DynamicFontAtSize::get_available_chars() const {
if (!valid) {
return "";
}
String chars;
FT_UInt gindex;
FT_ULong charcode = FT_Get_First_Char(face, &gindex);
while (gindex != 0) {
if (charcode != 0) {
chars += CharType(charcode);
}
charcode = FT_Get_Next_Char(face, charcode, &gindex);
}
return chars;
}
void DynamicFontAtSize::set_texture_flags(uint32_t p_flags) {
texture_flags = p_flags;
for (int i = 0; i < textures.size(); i++) {
Ref<ImageTexture> &tex = textures.write[i].texture;
if (!tex.is_null()) {
tex->set_flags(p_flags);
}
}
}
float DynamicFontAtSize::draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next, const Color &p_modulate, const Vector<Ref<DynamicFontAtSize>> &p_fallbacks, bool p_advance_only, bool p_outline) const {
if (!valid) {
return 0;
}
int32_t c = p_char;
bool skip_kerning = false;
if (((p_char & 0xfffffc00) == 0xd800) && (p_next & 0xfffffc00) == 0xdc00) { // decode surrogate pair.
c = (p_char << 10UL) + p_next - ((0xd800 << 10UL) + 0xdc00 - 0x10000);
skip_kerning = true;
}
if ((p_char & 0xfffffc00) == 0xdc00) { // skip trail surrogate.
return 0;
}
const_cast<DynamicFontAtSize *>(this)->_update_char(c);
Pair<const Character *, DynamicFontAtSize *> char_pair_with_font = _find_char_with_font(c, p_fallbacks);
const Character *ch = char_pair_with_font.first;
DynamicFontAtSize *font = char_pair_with_font.second;
ERR_FAIL_COND_V(!ch, 0.0);
float advance = 0.0;
// use normal character size if there's no outline character
if (p_outline && !ch->found) {
FT_GlyphSlot slot = face->glyph;
int error = FT_Load_Char(face, c, FT_HAS_COLOR(face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT);
if (!error) {
error = FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
if (!error) {
Character character = Character::not_found();
character = const_cast<DynamicFontAtSize *>(this)->_bitmap_to_character(slot->bitmap, slot->bitmap_top, slot->bitmap_left, slot->advance.x / 64.0);
advance = character.advance;
}
}
}
if (ch->found) {
ERR_FAIL_COND_V(ch->texture_idx < -1 || ch->texture_idx >= font->textures.size(), 0);
if (!p_advance_only && ch->texture_idx != -1) {
Point2 cpos = p_pos;
cpos.x += ch->h_align;
cpos.y -= font->get_ascent();
cpos.y += ch->v_align;
Color modulate = p_modulate;
if (FT_HAS_COLOR(font->face)) {
modulate.r = modulate.g = modulate.b = 1.0;
}
RID texture = font->textures[ch->texture_idx].texture->get_rid();
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, ch->rect.size), texture, ch->rect_uv, modulate, false, RID(), false);
}
advance = ch->advance;
}
if (!skip_kerning) {
advance += _get_kerning_advance(font, p_char, p_next);
}
return advance;
}
DynamicFontAtSize::Character DynamicFontAtSize::Character::not_found() {
Character ch;
ch.texture_idx = -1;
ch.advance = 0;
ch.h_align = 0;
ch.v_align = 0;
ch.found = false;
return ch;
}
DynamicFontAtSize::TexturePosition DynamicFontAtSize::_find_texture_pos_for_glyph(int p_color_size, Image::Format p_image_format, int p_width, int p_height) {
TexturePosition ret;
ret.index = -1;
ret.x = 0;
ret.y = 0;
int mw = p_width;
int mh = p_height;
for (int i = 0; i < textures.size(); i++) {
const CharTexture &ct = textures[i];
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(id.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
PoolVector<uint8_t>::Write w = tex.imgdata.write();
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) {
w[i + 0] = 255;
w[i + 1] = 0;
}
} else {
for (int i = 0; i < texsize * texsize * p_color_size; i += 4) {
w[i + 0] = 255;
w[i + 1] = 255;
w[i + 2] = 255;
w[i + 3] = 0;
}
}
}
tex.offsets.resize(texsize);
for (int i = 0; i < texsize; i++) { //zero offsets
tex.offsets.write[i] = 0;
}
textures.push_back(tex);
ret.index = textures.size() - 1;
}
return ret;
}
DynamicFontAtSize::Character DynamicFontAtSize::_bitmap_to_character(FT_Bitmap bitmap, int yofs, int xofs, float 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(color_size, require_format, mw, mh);
ERR_FAIL_COND_V(tex_pos.index < 0, Character::not_found());
//fit character in char texture
CharTexture &tex = textures.write[tex_pos.index];
{
PoolVector<uint8_t>::Write wr = tex.imgdata.write();
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
{
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, Texture::FLAG_VIDEO_SURFACE | texture_flags);
} else {
tex.texture->set_data(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.h_align = xofs * scale_color_font / oversampling;
chr.v_align = ascent - (yofs * scale_color_font / oversampling); // + ascent - descent;
chr.advance = advance * scale_color_font / oversampling;
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 = chr.rect.size * scale_color_font / oversampling;
return chr;
}
DynamicFontAtSize::Character DynamicFontAtSize::_make_outline_char(int32_t p_char) {
Character ret = Character::not_found();
if (FT_Load_Char(face, p_char, FT_LOAD_NO_BITMAP | (font->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0)) != 0) {
return ret;
}
FT_Stroker stroker;
if (FT_Stroker_New(library, &stroker) != 0) {
return ret;
}
FT_Stroker_Set(stroker, (int)(id.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(face->glyph, &glyph) != 0) {
goto cleanup_stroker;
}
if (FT_Glyph_Stroke(&glyph, stroker, 1) != 0) {
goto cleanup_glyph;
}
if (FT_Glyph_To_Bitmap(&glyph, font->antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO, nullptr, 1) != 0) {
goto cleanup_glyph;
}
glyph_bitmap = (FT_BitmapGlyph)glyph;
ret = _bitmap_to_character(glyph_bitmap->bitmap, glyph_bitmap->top, glyph_bitmap->left, glyph->advance.x / 65536.0);
cleanup_glyph:
FT_Done_Glyph(glyph);
cleanup_stroker:
FT_Stroker_Done(stroker);
return ret;
}
void DynamicFontAtSize::_update_char(int32_t p_char) {
if (char_map.has(p_char)) {
return;
}
_THREAD_SAFE_METHOD_
Character character = Character::not_found();
FT_GlyphSlot slot = face->glyph;
if (FT_Get_Char_Index(face, p_char) == 0) {
char_map[p_char] = character;
return;
}
int ft_hinting;
switch (font->hinting) {
case DynamicFontData::HINTING_NONE:
ft_hinting = FT_LOAD_NO_HINTING;
break;
case DynamicFontData::HINTING_LIGHT:
ft_hinting = FT_LOAD_TARGET_LIGHT;
break;
default:
ft_hinting = FT_LOAD_TARGET_NORMAL;
break;
}
int error = FT_Load_Char(face, p_char, FT_HAS_COLOR(face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (font->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting);
if (error) {
char_map[p_char] = character;
return;
}
if (id.outline_size > 0) {
character = _make_outline_char(p_char);
} else {
error = FT_Render_Glyph(face->glyph, font->antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
if (!error) {
character = _bitmap_to_character(slot->bitmap, slot->bitmap_top, slot->bitmap_left, slot->advance.x / 64.0);
}
}
char_map[p_char] = character;
}
void DynamicFontAtSize::update_oversampling() {
if (!valid) {
return;
}
float new_oversampling = (font.is_valid() && font->override_oversampling > 0) ? font->override_oversampling : font_oversampling;
if (oversampling == new_oversampling) {
return;
}
FT_Done_FreeType(library);
textures.clear();
char_map.clear();
oversampling = new_oversampling;
valid = false;
_load();
}
DynamicFontAtSize::DynamicFontAtSize() {
valid = false;
rect_margin = 1;
ascent = 1;
descent = 1;
linegap = 1;
texture_flags = 0;
oversampling = font_oversampling;
scale_color_font = 1;
}
DynamicFontAtSize::~DynamicFontAtSize() {
if (valid) {
FT_Done_FreeType(library);
}
font->size_cache.erase(id);
font.unref();
}
/////////////////////////
void DynamicFont::_reload_cache(const char *p_triggering_property) {
ERR_FAIL_COND(cache_id.size < 1);
if (!data.is_valid()) {
data_at_size.unref();
outline_data_at_size.unref();
fallbacks.resize(0);
fallback_data_at_size.resize(0);
fallback_outline_data_at_size.resize(0);
return;
}
data_at_size = data->_get_dynamic_font_at_size(cache_id);
if (outline_cache_id.outline_size > 0) {
outline_data_at_size = data->_get_dynamic_font_at_size(outline_cache_id);
fallback_outline_data_at_size.resize(fallback_data_at_size.size());
} else {
outline_data_at_size.unref();
fallback_outline_data_at_size.resize(0);
}
for (int i = 0; i < fallbacks.size(); i++) {
fallback_data_at_size.write[i] = fallbacks.write[i]->_get_dynamic_font_at_size(cache_id);
if (outline_cache_id.outline_size > 0) {
fallback_outline_data_at_size.write[i] = fallbacks.write[i]->_get_dynamic_font_at_size(outline_cache_id);
}
}
emit_changed();
_change_notify(p_triggering_property);
}
void DynamicFont::set_font_data(const Ref<DynamicFontData> &p_data) {
data = p_data;
_reload_cache(); // not passing the prop name as clearing the font data also clears fallbacks
}
Ref<DynamicFontData> DynamicFont::get_font_data() const {
return data;
}
void DynamicFont::set_size(int p_size) {
if (cache_id.size == p_size) {
return;
}
cache_id.size = p_size;
outline_cache_id.size = p_size;
_reload_cache("size");
}
int DynamicFont::get_size() const {
return cache_id.size;
}
void DynamicFont::set_outline_size(int p_size) {
if (outline_cache_id.outline_size == p_size) {
return;
}
ERR_FAIL_COND(p_size < 0 || p_size > UINT8_MAX);
outline_cache_id.outline_size = p_size;
_reload_cache("outline_size");
}
int DynamicFont::get_outline_size() const {
return outline_cache_id.outline_size;
}
void DynamicFont::set_outline_color(Color p_color) {
if (p_color != outline_color) {
outline_color = p_color;
emit_changed();
_change_notify("outline_color");
}
}
Color DynamicFont::get_outline_color() const {
return outline_color;
}
bool DynamicFont::get_use_mipmaps() const {
return cache_id.mipmaps;
}
void DynamicFont::set_use_mipmaps(bool p_enable) {
if (cache_id.mipmaps == p_enable) {
return;
}
cache_id.mipmaps = p_enable;
outline_cache_id.mipmaps = p_enable;
_reload_cache();
}
bool DynamicFont::get_use_filter() const {
return cache_id.filter;
}
void DynamicFont::set_use_filter(bool p_enable) {
if (cache_id.filter == p_enable) {
return;
}
cache_id.filter = p_enable;
outline_cache_id.filter = p_enable;
_reload_cache();
}
bool DynamicFontData::is_antialiased() const {
return antialiased;
}
void DynamicFontData::set_antialiased(bool p_antialiased) {
if (antialiased == p_antialiased) {
return;
}
antialiased = p_antialiased;
}
DynamicFontData::Hinting DynamicFontData::get_hinting() const {
return hinting;
}
void DynamicFontData::set_hinting(Hinting p_hinting) {
if (hinting == p_hinting) {
return;
}
hinting = p_hinting;
}
int DynamicFont::get_spacing(int p_type) const {
if (p_type == SPACING_TOP) {
return spacing_top;
} else if (p_type == SPACING_BOTTOM) {
return spacing_bottom;
} else if (p_type == SPACING_CHAR) {
return spacing_char;
} else if (p_type == SPACING_SPACE) {
return spacing_space;
}
return 0;
}
void DynamicFont::set_spacing(int p_type, int p_value) {
if (p_type == SPACING_TOP) {
spacing_top = p_value;
_change_notify("extra_spacing_top");
} else if (p_type == SPACING_BOTTOM) {
spacing_bottom = p_value;
_change_notify("extra_spacing_bottom");
} else if (p_type == SPACING_CHAR) {
spacing_char = p_value;
_change_notify("extra_spacing_char");
} else if (p_type == SPACING_SPACE) {
spacing_space = p_value;
_change_notify("extra_spacing_space");
}
emit_changed();
}
float DynamicFont::get_height() const {
if (!data_at_size.is_valid()) {
return 1;
}
return data_at_size->get_height() + spacing_top + spacing_bottom;
}
float DynamicFont::get_ascent() const {
if (!data_at_size.is_valid()) {
return 1;
}
return data_at_size->get_ascent() + spacing_top;
}
float DynamicFont::get_descent() const {
if (!data_at_size.is_valid()) {
return 1;
}
return data_at_size->get_descent() + spacing_bottom;
}
Size2 DynamicFont::get_char_size(CharType p_char, CharType p_next) const {
if (!data_at_size.is_valid()) {
return Size2(1, 1);
}
Size2 ret = data_at_size->get_char_size(p_char, p_next, fallback_data_at_size);
if (p_char == ' ') {
ret.width += spacing_space + spacing_char;
} else if (p_next) {
ret.width += spacing_char;
}
return ret;
}
String DynamicFont::get_available_chars() const {
if (!data_at_size.is_valid()) {
return "";
}
String chars = data_at_size->get_available_chars();
for (int i = 0; i < fallback_data_at_size.size(); i++) {
String fallback_chars = fallback_data_at_size[i]->get_available_chars();
for (int j = 0; j < fallback_chars.length(); j++) {
if (chars.find_char(fallback_chars[j]) == -1) {
chars += fallback_chars[j];
}
}
}
return chars;
}
bool DynamicFont::is_distance_field_hint() const {
return false;
}
bool DynamicFont::has_outline() const {
return outline_cache_id.outline_size > 0;
}
float DynamicFont::draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next, const Color &p_modulate, bool p_outline) const {
if (!data_at_size.is_valid()) {
return 0;
}
int spacing = spacing_char;
if (p_char == ' ') {
spacing += spacing_space;
}
if (p_outline) {
if (outline_data_at_size.is_valid() && outline_cache_id.outline_size > 0) {
outline_data_at_size->draw_char(p_canvas_item, p_pos, p_char, p_next, p_modulate * outline_color, fallback_outline_data_at_size, false, true); // Draw glyph outline.
}
return data_at_size->draw_char(p_canvas_item, p_pos, p_char, p_next, p_modulate, fallback_data_at_size, true, false) + spacing; // Return advance of the base glyph.
} else {
return data_at_size->draw_char(p_canvas_item, p_pos, p_char, p_next, p_modulate, fallback_data_at_size, false, false) + spacing; // Draw base glyph and return advance.
}
}
void DynamicFont::set_fallback(int p_idx, const Ref<DynamicFontData> &p_data) {
ERR_FAIL_COND(p_data.is_null());
ERR_FAIL_INDEX(p_idx, fallbacks.size());
fallbacks.write[p_idx] = p_data;
fallback_data_at_size.write[p_idx] = fallbacks.write[p_idx]->_get_dynamic_font_at_size(cache_id);
}
void DynamicFont::add_fallback(const Ref<DynamicFontData> &p_data) {
ERR_FAIL_COND(p_data.is_null());
fallbacks.push_back(p_data);
fallback_data_at_size.push_back(fallbacks.write[fallbacks.size() - 1]->_get_dynamic_font_at_size(cache_id)); //const..
if (outline_cache_id.outline_size > 0) {
fallback_outline_data_at_size.push_back(fallbacks.write[fallbacks.size() - 1]->_get_dynamic_font_at_size(outline_cache_id));
}
emit_changed();
_change_notify();
}
int DynamicFont::get_fallback_count() const {
return fallbacks.size();
}
Ref<DynamicFontData> DynamicFont::get_fallback(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, fallbacks.size(), Ref<DynamicFontData>());
return fallbacks[p_idx];
}
void DynamicFont::remove_fallback(int p_idx) {
ERR_FAIL_INDEX(p_idx, fallbacks.size());
fallbacks.remove(p_idx);
fallback_data_at_size.remove(p_idx);
emit_changed();
_change_notify();
}
bool DynamicFont::_set(const StringName &p_name, const Variant &p_value) {
String str = p_name;
if (str.begins_with("fallback/")) {
int idx = str.get_slicec('/', 1).to_int();
Ref<DynamicFontData> fd = p_value;
if (fd.is_valid()) {
if (idx == fallbacks.size()) {
add_fallback(fd);
return true;
} else if (idx >= 0 && idx < fallbacks.size()) {
set_fallback(idx, fd);
return true;
} else {
return false;
}
} else if (idx >= 0 && idx < fallbacks.size()) {
remove_fallback(idx);
return true;
}
}
return false;
}
bool DynamicFont::_get(const StringName &p_name, Variant &r_ret) const {
String str = p_name;
if (str.begins_with("fallback/")) {
int idx = str.get_slicec('/', 1).to_int();
if (idx == fallbacks.size()) {
r_ret = Ref<DynamicFontData>();
return true;
} else if (idx >= 0 && idx < fallbacks.size()) {
r_ret = get_fallback(idx);
return true;
}
}
return false;
}
void DynamicFont::_get_property_list(List<PropertyInfo> *p_list) const {
for (int i = 0; i < fallbacks.size(); i++) {
p_list->push_back(PropertyInfo(Variant::OBJECT, "fallback/" + itos(i), PROPERTY_HINT_RESOURCE_TYPE, "DynamicFontData"));
}
p_list->push_back(PropertyInfo(Variant::OBJECT, "fallback/" + itos(fallbacks.size()), PROPERTY_HINT_RESOURCE_TYPE, "DynamicFontData"));
}
void DynamicFont::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_font_data", "data"), &DynamicFont::set_font_data);
ClassDB::bind_method(D_METHOD("get_font_data"), &DynamicFont::get_font_data);
ClassDB::bind_method(D_METHOD("get_available_chars"), &DynamicFont::get_available_chars);
ClassDB::bind_method(D_METHOD("set_size", "data"), &DynamicFont::set_size);
ClassDB::bind_method(D_METHOD("get_size"), &DynamicFont::get_size);
ClassDB::bind_method(D_METHOD("set_outline_size", "size"), &DynamicFont::set_outline_size);
ClassDB::bind_method(D_METHOD("get_outline_size"), &DynamicFont::get_outline_size);
ClassDB::bind_method(D_METHOD("set_outline_color", "color"), &DynamicFont::set_outline_color);
ClassDB::bind_method(D_METHOD("get_outline_color"), &DynamicFont::get_outline_color);
ClassDB::bind_method(D_METHOD("set_use_mipmaps", "enable"), &DynamicFont::set_use_mipmaps);
ClassDB::bind_method(D_METHOD("get_use_mipmaps"), &DynamicFont::get_use_mipmaps);
ClassDB::bind_method(D_METHOD("set_use_filter", "enable"), &DynamicFont::set_use_filter);
ClassDB::bind_method(D_METHOD("get_use_filter"), &DynamicFont::get_use_filter);
ClassDB::bind_method(D_METHOD("set_spacing", "type", "value"), &DynamicFont::set_spacing);
ClassDB::bind_method(D_METHOD("get_spacing", "type"), &DynamicFont::get_spacing);
ClassDB::bind_method(D_METHOD("add_fallback", "data"), &DynamicFont::add_fallback);
ClassDB::bind_method(D_METHOD("set_fallback", "idx", "data"), &DynamicFont::set_fallback);
ClassDB::bind_method(D_METHOD("get_fallback", "idx"), &DynamicFont::get_fallback);
ClassDB::bind_method(D_METHOD("remove_fallback", "idx"), &DynamicFont::remove_fallback);
ClassDB::bind_method(D_METHOD("get_fallback_count"), &DynamicFont::get_fallback_count);
ADD_GROUP("Settings", "");
ADD_PROPERTY(PropertyInfo(Variant::INT, "size", PROPERTY_HINT_RANGE, "1,1024,1"), "set_size", "get_size");
ADD_PROPERTY(PropertyInfo(Variant::INT, "outline_size", PROPERTY_HINT_RANGE, "0,1024,1"), "set_outline_size", "get_outline_size");
ADD_PROPERTY(PropertyInfo(Variant::COLOR, "outline_color"), "set_outline_color", "get_outline_color");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_mipmaps"), "set_use_mipmaps", "get_use_mipmaps");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_filter"), "set_use_filter", "get_use_filter");
ADD_GROUP("Extra Spacing", "extra_spacing");
ADD_PROPERTYI(PropertyInfo(Variant::INT, "extra_spacing_top"), "set_spacing", "get_spacing", SPACING_TOP);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "extra_spacing_bottom"), "set_spacing", "get_spacing", SPACING_BOTTOM);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "extra_spacing_char"), "set_spacing", "get_spacing", SPACING_CHAR);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "extra_spacing_space"), "set_spacing", "get_spacing", SPACING_SPACE);
ADD_GROUP("Font", "");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "font_data", PROPERTY_HINT_RESOURCE_TYPE, "DynamicFontData"), "set_font_data", "get_font_data");
BIND_ENUM_CONSTANT(SPACING_TOP);
BIND_ENUM_CONSTANT(SPACING_BOTTOM);
BIND_ENUM_CONSTANT(SPACING_CHAR);
BIND_ENUM_CONSTANT(SPACING_SPACE);
}
Mutex DynamicFont::dynamic_font_mutex;
SelfList<DynamicFont>::List *DynamicFont::dynamic_fonts = nullptr;
DynamicFont::DynamicFont() :
font_list(this) {
cache_id.size = 16;
outline_cache_id.size = 16;
spacing_top = 0;
spacing_bottom = 0;
spacing_char = 0;
spacing_space = 0;
outline_color = Color(1, 1, 1);
dynamic_font_mutex.lock();
dynamic_fonts->add(&font_list);
dynamic_font_mutex.unlock();
}
DynamicFont::~DynamicFont() {
dynamic_font_mutex.lock();
dynamic_fonts->remove(&font_list);
dynamic_font_mutex.unlock();
}
void DynamicFont::initialize_dynamic_fonts() {
dynamic_fonts = memnew(SelfList<DynamicFont>::List());
}
void DynamicFont::finish_dynamic_fonts() {
memdelete(dynamic_fonts);
dynamic_fonts = nullptr;
}
void DynamicFont::update_oversampling() {
Vector<Ref<DynamicFont>> changed;
dynamic_font_mutex.lock();
SelfList<DynamicFont> *E = dynamic_fonts->first();
while (E) {
if (E->self()->data_at_size.is_valid()) {
E->self()->data_at_size->update_oversampling();
if (E->self()->outline_data_at_size.is_valid()) {
E->self()->outline_data_at_size->update_oversampling();
}
for (int i = 0; i < E->self()->fallback_data_at_size.size(); i++) {
if (E->self()->fallback_data_at_size[i].is_valid()) {
E->self()->fallback_data_at_size.write[i]->update_oversampling();
if (E->self()->has_outline() && E->self()->fallback_outline_data_at_size[i].is_valid()) {
E->self()->fallback_outline_data_at_size.write[i]->update_oversampling();
}
}
}
changed.push_back(Ref<DynamicFont>(E->self()));
}
E = E->next();
}
dynamic_font_mutex.unlock();
for (int i = 0; i < changed.size(); i++) {
changed.write[i]->emit_changed();
}
}
/////////////////////////
RES ResourceFormatLoaderDynamicFont::load(const String &p_path, const String &p_original_path, Error *r_error) {
if (r_error) {
*r_error = ERR_FILE_CANT_OPEN;
}
Ref<DynamicFontData> dfont;
dfont.instance();
dfont->set_font_path(p_path);
if (r_error) {
*r_error = OK;
}
return dfont;
}
void ResourceFormatLoaderDynamicFont::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("ttf");
p_extensions->push_back("otf");
// Only WOFF1 is supported as WOFF2 requires a Brotli decompression library to be linked.
p_extensions->push_back("woff");
}
bool ResourceFormatLoaderDynamicFont::handles_type(const String &p_type) const {
return (p_type == "DynamicFontData");
}
String ResourceFormatLoaderDynamicFont::get_resource_type(const String &p_path) const {
String el = p_path.get_extension().to_lower();
if (el == "ttf" || el == "otf" || el == "woff") {
return "DynamicFontData";
}
return "";
}
#endif
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