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godot/scene/resources/dynamic_font.cpp

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/*************************************************************************/
/* dynamic_font.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 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. */
/*************************************************************************/
#ifdef FREETYPE_ENABLED
#include "dynamic_font.h"
#include "os/file_access.h"
#include "os/os.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);
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;
}
void DynamicFontData::_bind_methods() {
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);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "font_path", PROPERTY_HINT_FILE, "*.ttf,*.otf"), "set_font_path", "get_font_path");
}
DynamicFontData::DynamicFontData() {
force_autohinter = false;
font_mem = NULL;
font_mem_size = 0;
}
DynamicFontData::~DynamicFontData() {
}
////////////////////
HashMap<String, Vector<uint8_t> > DynamicFontAtSize::_fontdata;
Error DynamicFontAtSize::_load() {
int error = FT_Init_FreeType(&library);
ERR_EXPLAIN(TTR("Error initializing FreeType."));
ERR_FAIL_COND_V(error != 0, ERR_CANT_CREATE);
// FT_OPEN_STREAM is extremely slow only on Android.
if (OS::get_singleton()->get_name() == "Android" && font->font_mem == NULL && font->font_path != String()) {
// cache font only once for each font->font_path
if (_fontdata.has(font->font_path)) {
font->set_font_ptr(_fontdata[font->font_path].ptr(), _fontdata[font->font_path].size());
} else {
FileAccess *f = FileAccess::open(font->font_path, FileAccess::READ);
ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
size_t len = f->get_len();
_fontdata[font->font_path] = Vector<uint8_t>();
Vector<uint8_t> &fontdata = _fontdata[font->font_path];
fontdata.resize(len);
f->get_buffer(fontdata.ptrw(), len);
font->set_font_ptr(fontdata.ptr(), len);
f->close();
}
}
if (font->font_mem == NULL && font->font_path != String()) {
FileAccess *f = FileAccess::open(font->font_path, FileAccess::READ);
ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
memset(&stream, 0, sizeof(FT_StreamRec));
stream.base = NULL;
stream.size = f->get_len();
stream.pos = 0;
stream.descriptor.pointer = f;
stream.read = _ft_stream_io;
stream.close = _ft_stream_close;
FT_Open_Args fargs;
memset(&fargs, 0, sizeof(FT_Open_Args));
fargs.flags = FT_OPEN_STREAM;
fargs.stream = &stream;
error = FT_Open_Face(library, &fargs, 0, &face);
} else 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 {
ERR_EXPLAIN("DynamicFont uninitialized");
ERR_FAIL_V(ERR_UNCONFIGURED);
}
//error = FT_New_Face( library, src_path.utf8().get_data(),0,&face );
if (error == FT_Err_Unknown_File_Format) {
ERR_EXPLAIN(TTR("Unknown font format."));
FT_Done_FreeType(library);
} else if (error) {
ERR_EXPLAIN(TTR("Error loading font."));
FT_Done_FreeType(library);
}
ERR_FAIL_COND_V(error, ERR_FILE_CANT_OPEN);
/*error = FT_Set_Char_Size(face,0,64*size,512,512);
if ( error ) {
FT_Done_FreeType( library );
ERR_EXPLAIN(TTR("Invalid font size."));
ERR_FAIL_COND_V( error, ERR_INVALID_PARAMETER );
}*/
error = FT_Set_Pixel_Sizes(face, 0, id.size * oversampling);
ascent = (face->size->metrics.ascender >> 6) / oversampling;
descent = (-face->size->metrics.descender >> 6) / oversampling;
linegap = 0;
texture_flags = 0;
if (id.mipmaps)
texture_flags |= Texture::FLAG_MIPMAPS;
if (id.filter)
texture_flags |= Texture::FLAG_FILTER;
//print_line("ASCENT: "+itos(ascent)+" descent "+itos(descent)+" hinted: "+itos(face->face_flags&FT_FACE_FLAG_HINTER));
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;
}
Size2 DynamicFontAtSize::get_char_size(CharType p_char, CharType p_next, const Vector<Ref<DynamicFontAtSize> > &p_fallbacks) const {
if (!valid)
return Size2(1, 1);
const_cast<DynamicFontAtSize *>(this)->_update_char(p_char);
const Character *c = char_map.getptr(p_char);
ERR_FAIL_COND_V(!c, Size2());
Size2 ret(0, get_height());
if (!c->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 *ch = fb->char_map.getptr(p_char);
ERR_CONTINUE(!ch);
if (!ch->found)
continue;
c = ch;
break;
}
//not found, try 0xFFFD to display 'not found'.
if (!c->found) {
const_cast<DynamicFontAtSize *>(this)->_update_char(0xFFFD);
c = char_map.getptr(0xFFFD);
ERR_FAIL_COND_V(!c, Size2());
}
}
if (c->found) {
ret.x = c->advance;
}
if (p_next) {
FT_Vector delta;
FT_Get_Kerning(face, p_char, p_next, FT_KERNING_DEFAULT, &delta);
if (delta.x == 0) {
for (int i = 0; i < p_fallbacks.size(); i++) {
DynamicFontAtSize *fb = const_cast<DynamicFontAtSize *>(p_fallbacks[i].ptr());
if (!fb->valid)
continue;
FT_Get_Kerning(fb->face, p_char, p_next, FT_KERNING_DEFAULT, &delta);
if (delta.x == 0)
continue;
ret.x += (delta.x >> 6) / oversampling;
break;
}
} else {
ret.x += (delta.x >> 6) / oversampling;
}
}
return ret;
}
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[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) const {
if (!valid)
return 0;
const_cast<DynamicFontAtSize *>(this)->_update_char(p_char);
const Character *c = char_map.getptr(p_char);
float advance = 0;
if (!c->found) {
//not found, try in fallbacks
bool used_fallback = false;
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 *ch = fb->char_map.getptr(p_char);
ERR_CONTINUE(!ch);
if (!ch->found)
continue;
Point2 cpos = p_pos;
cpos.x += ch->h_align;
cpos.y -= get_ascent();
cpos.y += ch->v_align;
ERR_FAIL_COND_V(ch->texture_idx < -1 || ch->texture_idx >= fb->textures.size(), 0);
if (ch->texture_idx != -1)
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, ch->rect.size), fb->textures[ch->texture_idx].texture->get_rid(), ch->rect_uv, p_modulate, false, RID(), false);
advance = ch->advance;
used_fallback = true;
break;
}
//not found, try 0xFFFD to display 'not found'.
if (!used_fallback) {
const_cast<DynamicFontAtSize *>(this)->_update_char(0xFFFD);
c = char_map.getptr(0xFFFD);
}
}
if (c->found) {
Point2 cpos = p_pos;
cpos.x += c->h_align;
cpos.y -= get_ascent();
cpos.y += c->v_align;
ERR_FAIL_COND_V(c->texture_idx < -1 || c->texture_idx >= textures.size(), 0);
if (c->texture_idx != -1)
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, c->rect.size), textures[c->texture_idx].texture->get_rid(), c->rect_uv, p_modulate, false, RID(), false);
advance = c->advance;
//textures[c->texture_idx].texture->draw(p_canvas_item,Vector2());
}
if (p_next) {
FT_Vector delta;
FT_Get_Kerning(face, p_char, p_next, FT_KERNING_DEFAULT, &delta);
if (delta.x == 0) {
for (int i = 0; i < p_fallbacks.size(); i++) {
DynamicFontAtSize *fb = const_cast<DynamicFontAtSize *>(p_fallbacks[i].ptr());
if (!fb->valid)
continue;
FT_Get_Kerning(fb->face, p_char, p_next, FT_KERNING_DEFAULT, &delta);
if (delta.x == 0)
continue;
advance += (delta.x >> 6) / oversampling;
break;
}
} else {
advance += (delta.x >> 6) / oversampling;
}
}
return advance;
}
unsigned long DynamicFontAtSize::_ft_stream_io(FT_Stream stream, unsigned long offset, unsigned char *buffer, unsigned long count) {
FileAccess *f = (FileAccess *)stream->descriptor.pointer;
if (f->get_position() != offset) {
f->seek(offset);
}
if (count == 0)
return 0;
return f->get_buffer(buffer, count);
}
void DynamicFontAtSize::_ft_stream_close(FT_Stream stream) {
FileAccess *f = (FileAccess *)stream->descriptor.pointer;
f->close();
memdelete(f);
}
void DynamicFontAtSize::_update_char(CharType p_char) {
if (char_map.has(p_char))
return;
_THREAD_SAFE_METHOD_
FT_GlyphSlot slot = face->glyph;
if (FT_Get_Char_Index(face, p_char) == 0) {
//not found
Character ch;
ch.texture_idx = -1;
ch.advance = 0;
ch.h_align = 0;
ch.v_align = 0;
ch.found = false;
char_map[p_char] = ch;
return;
}
int error = FT_Load_Char(face, p_char, FT_LOAD_RENDER | (font->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
if (!error) {
error = FT_Render_Glyph(face->glyph, ft_render_mode_normal);
}
if (error) {
int advance = 0;
//stbtt_GetCodepointHMetrics(&font->info, p_char, &advance, 0);
//print_line("char has no bitmap: "+itos(p_char)+" but advance is "+itos(advance*scale));
Character ch;
ch.texture_idx = -1;
ch.advance = advance;
ch.h_align = 0;
ch.v_align = 0;
ch.found = false;
char_map[p_char] = ch;
return;
}
int w = slot->bitmap.width;
int h = slot->bitmap.rows;
//int p = slot->bitmap.pitch;
int yofs = slot->bitmap_top;
int xofs = slot->bitmap_left;
int advance = slot->advance.x >> 6;
int mw = w + rect_margin * 2;
int mh = h + rect_margin * 2;
if (mw > 4096 || mh > 4096) {
ERR_FAIL_COND(mw > 4096);
ERR_FAIL_COND(mh > 4096);
}
//find a texture to fit this...
int tex_index = -1;
int tex_x = 0;
int tex_y = 0;
for (int i = 0; i < textures.size(); i++) {
CharTexture &ct = textures[i];
if (mw > ct.texture_size || mh > ct.texture_size) //too big for this texture
continue;
tex_y = 0x7FFFFFFF;
tex_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 < tex_y) {
tex_y = max_y;
tex_x = j;
}
}
if (tex_y == 0x7FFFFFFF || tex_y + mh > ct.texture_size)
continue; //fail, could not fit it here
tex_index = i;
break;
}
//print_line("CHAR: "+String::chr(p_char)+" TEX INDEX: "+itos(tex_index)+" X: "+itos(tex_x)+" Y: "+itos(tex_y));
if (tex_index == -1) {
//could not find texture to fit, create one
tex_x = 0;
tex_y = 0;
int texsize = MAX(id.size * 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 * 2); //grayscale alpha
{
//zero texture
PoolVector<uint8_t>::Write w = tex.imgdata.write();
ERR_FAIL_COND(texsize * texsize * 2 > tex.imgdata.size());
for (int i = 0; i < texsize * texsize * 2; i++) {
w[i] = 0;
}
}
tex.offsets.resize(texsize);
for (int i = 0; i < texsize; i++) //zero offsets
tex.offsets[i] = 0;
textures.push_back(tex);
tex_index = textures.size() - 1;
}
//fit character in char texture
CharTexture &tex = textures[tex_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_y + rect_margin) * tex.texture_size + j + tex_x + rect_margin) * 2;
ERR_FAIL_COND(ofs >= tex.imgdata.size());
switch (slot->bitmap.pixel_mode) {
case FT_PIXEL_MODE_MONO: {
int byte = i * slot->bitmap.pitch + (j >> 3);
int bit = 1 << (7 - (j % 8));
wr[ofs + 0] = 255; //grayscale as 1
wr[ofs + 1] = slot->bitmap.buffer[byte] & bit ? 255 : 0;
} break;
case FT_PIXEL_MODE_GRAY:
wr[ofs + 0] = 255; //grayscale as 1
wr[ofs + 1] = slot->bitmap.buffer[i * slot->bitmap.pitch + j];
break;
// TODO: FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_BGRA
default:
ERR_EXPLAIN("Font uses unsupported pixel format: " + itos(slot->bitmap.pixel_mode));
ERR_FAIL();
break;
}
}
}
}
//blit to image and texture
{
Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, Image::FORMAT_LA8, 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_x; k < tex_x + mw; k++) {
tex.offsets[k] = tex_y + mh;
}
Character chr;
chr.h_align = xofs / oversampling;
chr.v_align = ascent - (yofs / oversampling); // + ascent - descent;
chr.advance = advance / oversampling;
chr.texture_idx = tex_index;
chr.found = true;
chr.rect_uv = Rect2(tex_x + rect_margin, tex_y + rect_margin, w, h);
chr.rect = chr.rect_uv;
chr.rect.position /= oversampling;
chr.rect.size /= oversampling;
//print_line("CHAR: "+String::chr(p_char)+" TEX INDEX: "+itos(tex_index)+" RECT: "+chr.rect+" X OFS: "+itos(xofs)+" Y OFS: "+itos(yofs));
char_map[p_char] = chr;
}
bool DynamicFontAtSize::update_oversampling() {
if (oversampling == font_oversampling)
return false;
if (!valid)
return false;
FT_Done_FreeType(library);
textures.clear();
char_map.clear();
oversampling = font_oversampling;
valid = false;
_load();
return true;
}
DynamicFontAtSize::DynamicFontAtSize() {
valid = false;
rect_margin = 1;
ascent = 1;
descent = 1;
linegap = 1;
texture_flags = 0;
oversampling = font_oversampling;
}
DynamicFontAtSize::~DynamicFontAtSize() {
if (valid) {
FT_Done_FreeType(library);
}
font->size_cache.erase(id);
font.unref();
}
/////////////////////////
void DynamicFont::_reload_cache() {
ERR_FAIL_COND(cache_id.size < 1);
if (!data.is_valid())
return;
data_at_size = data->_get_dynamic_font_at_size(cache_id);
for (int i = 0; i < fallbacks.size(); i++) {
fallback_data_at_size[i] = fallbacks[i]->_get_dynamic_font_at_size(cache_id);
}
emit_changed();
_change_notify();
}
void DynamicFont::set_font_data(const Ref<DynamicFontData> &p_data) {
data = p_data;
if (data.is_valid())
data_at_size = data->_get_dynamic_font_at_size(cache_id);
else
data_at_size = Ref<DynamicFontAtSize>();
emit_changed();
}
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;
_reload_cache();
}
int DynamicFont::get_size() const {
return cache_id.size;
}
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;
_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;
_reload_cache();
}
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;
} else if (p_type == SPACING_BOTTOM) {
spacing_bottom = p_value;
} else if (p_type == SPACING_CHAR) {
spacing_char = p_value;
} else if (p_type == SPACING_SPACE) {
spacing_space = p_value;
}
emit_changed();
_change_notify();
}
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;
}
bool DynamicFont::is_distance_field_hint() const {
return false;
}
float DynamicFont::draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next, const Color &p_modulate) const {
if (!data_at_size.is_valid())
return 0;
return data_at_size->draw_char(p_canvas_item, p_pos, p_char, p_next, p_modulate, fallback_data_at_size) + spacing_char;
}
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[p_idx] = p_data;
fallback_data_at_size[p_idx] = fallbacks[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[fallbacks.size() - 1]->_get_dynamic_font_at_size(cache_id)); //const..
_change_notify();
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("set_size", "data"), &DynamicFont::set_size);
ClassDB::bind_method(D_METHOD("get_size"), &DynamicFont::get_size);
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"), "set_size", "get_size");
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_PROPERTYINZ(PropertyInfo(Variant::INT, "extra_spacing_top"), "set_spacing", "get_spacing", SPACING_TOP);
ADD_PROPERTYINZ(PropertyInfo(Variant::INT, "extra_spacing_bottom"), "set_spacing", "get_spacing", SPACING_BOTTOM);
ADD_PROPERTYINZ(PropertyInfo(Variant::INT, "extra_spacing_char"), "set_spacing", "get_spacing", SPACING_CHAR);
ADD_PROPERTYINZ(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 = NULL;
SelfList<DynamicFont>::List DynamicFont::dynamic_fonts;
DynamicFont::DynamicFont() :
font_list(this) {
spacing_top = 0;
spacing_bottom = 0;
spacing_char = 0;
spacing_space = 0;
if (dynamic_font_mutex)
dynamic_font_mutex->lock();
dynamic_fonts.add(&font_list);
if (dynamic_font_mutex)
dynamic_font_mutex->unlock();
}
DynamicFont::~DynamicFont() {
if (dynamic_font_mutex)
dynamic_font_mutex->lock();
dynamic_fonts.remove(&font_list);
if (dynamic_font_mutex)
dynamic_font_mutex->unlock();
}
void DynamicFont::initialize_dynamic_fonts() {
dynamic_font_mutex = Mutex::create();
}
void DynamicFont::finish_dynamic_fonts() {
memdelete(dynamic_font_mutex);
dynamic_font_mutex = NULL;
}
void DynamicFont::update_oversampling() {
Vector<Ref<DynamicFont> > changed;
if (dynamic_font_mutex)
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()) {
changed.push_back(Ref<DynamicFont>(E->self()));
}
E = E->next();
}
if (dynamic_font_mutex)
dynamic_font_mutex->unlock();
for (int i = 0; i < changed.size(); i++) {
changed[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");
}
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")
return "DynamicFontData";
return "";
}
#endif
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