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godot/tools/editor/plugins/font_editor_plugin.cpp
Juan Linietsky 0b806ee0fc GODOT IS OPEN SOURCE
2014-02-09 22:10:30 -03:00

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/*************************************************************************/
/* font_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "font_editor_plugin.h"
#include "os/file_access.h"
#ifdef FREETYPE_ENABLED
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#include "core/io/resource_saver.h"
void FontEditor::edit(const Ref<Font>& p_font) {
font=p_font;
label->add_font_override("font",font);
}
void FontEditor::_preview_text_changed(const String& p_text) {
label->set_text(p_text);
}
struct FontData {
Vector<uint8_t> bitmap;
int width,height;
int ofs_x; //ofset to center, from ABOVE
int ofs_y; //ofset to begining, from LEFT
int valign; //vertical alignment
int halign;
int advance;
int character;
int glyph;
int texture;
// bool printable;
};
struct FontDataSort {
bool operator()(const FontData *p_A,const FontData *p_B) const {
return p_A->height > p_B->height;
};
};
struct KerningKey {
CharType A,B;
bool operator<(const KerningKey& p_k) const { return (A==p_k.A)?(B<p_k.B):(A<p_k.A); }
};
void FontEditor::_export_fnt(const String& p_name, Ref<Font> p_font) {
String fnt_name = p_name + ".fnt";
FileAccess* f = FileAccess::open(fnt_name, FileAccess::WRITE);
ERR_FAIL_COND(!f);
f->store_string(String("info face=\"") + p_font->get_name() + "\" size=" + String::num_real(font->get_height()) + " bold=0 italic=0 charset=\"\" unicode=0 stretchH=100 smooth=1 aa=1 padding=0,0,0,0 spacing=4,4\n");
Vector2 size = p_font->get_texture(0)->get_size();
f->store_string(String("common lineHeight=") + String::num(font->get_height()) + " base=" + String::num(font->get_ascent()) + " scaleW=" + String::num(size.x) + " scaleH=" + String::num(size.y) + " pages="+String::num(p_font->get_texture_count()) + " packed=0\n");
for (int i=0; i<p_font->get_texture_count(); i++) {
f->store_string(String("page id=")+String::num(i)+ " file=\""+ p_name.get_file() + "_" +String::num(i)+".png\"\n");
};
f->store_string(String("chars count=")+String::num(p_font->get_character_count()) + "\n");
Vector<CharType> keys = p_font->get_char_keys();
keys.sort();
for (int i=0; i<keys.size(); i++) {
Font::Character c = p_font->get_character(keys[i]);
int width = c.rect.size.x;
if (keys[i] == 32) {
width = c.advance;
};
f->store_string(String("char id=") + String::num(keys[i]) + " x=" + String::num(c.rect.pos.x) + " y=" + String::num(c.rect.pos.y) +
" width=" + String::num(width) + " height=" + String::num(c.rect.size.y) +
" xoffset=" + String::num(c.h_align) + " yoffset=" + String::num(c.v_align) +
" xadvance=" + String::num(c.advance) + " page=" + String::num(c.texture_idx) +
" chnl=0 letter=\"\"\n");
};
f->close();
for (int i=0; i<p_font->get_texture_count(); i++) {
ResourceSaver::save(p_name + "_" + String::num(i) + ".png", p_font->get_texture(i));
};
};
void FontEditor::_import_fnt(const String& p_string) {
//fnt format used by angelcode bmfont
//http://www.angelcode.com/products/bmfont/
FileAccess *f = FileAccess::open(p_string,FileAccess::READ);
if (!f) {
ERR_EXPLAIN("Can't open font: "+p_string);
ERR_FAIL();
}
font->clear();
while(true) {
String line=f->get_line();
int delimiter=line.find(" ");
String type=line.substr(0,delimiter);
int pos = delimiter+1;
Map<String,String> keys;
while (pos < line.size() && line[pos]==' ')
pos++;
while(pos<line.size()) {
int eq = line.find("=",pos);
if (eq==-1)
break;
String key=line.substr(pos,eq-pos);
int end=-1;
String value;
if (line[eq+1]=='"') {
end=line.find("\"",eq+2);
if (end==-1)
break;
value=line.substr(eq+2,end-1-eq-1);
pos=end+1;
} else {
end=line.find(" ",eq+1);
if (end==-1)
end=line.size();
value=line.substr(eq+1,end-eq);
pos=end;
}
while (pos<line.size() && line[pos]==' ')
pos++;
keys[key]=value;
}
if (type=="info") {
if (keys.has("face"))
font->set_name(keys["face"]);
//if (keys.has("size"))
// font->set_height(keys["size"].to_int());
} else if (type=="common") {
if (keys.has("lineHeight"))
font->set_height(keys["lineHeight"].to_int());
if (keys.has("base"))
font->set_ascent(keys["base"].to_int());
} else if (type=="page") {
if (keys.has("file")) {
String file = keys["file"];
file=p_string.get_base_dir()+"/"+file;
Ref<Texture> tex = ResourceLoader::load(file);
if (tex.is_null()) {
ERR_PRINT("Can't load font texture!");
} else {
font->add_texture(tex);
}
}
} else if (type=="char") {
CharType idx=0;
if (keys.has("id"))
idx=keys["id"].to_int();
Rect2 rect;
if (keys.has("x"))
rect.pos.x=keys["x"].to_int();
if (keys.has("y"))
rect.pos.y=keys["y"].to_int();
if (keys.has("width"))
rect.size.width=keys["width"].to_int();
if (keys.has("height"))
rect.size.height=keys["height"].to_int();
Point2 ofs;
if (keys.has("xoffset"))
ofs.x=keys["xoffset"].to_int();
if (keys.has("yoffset"))
ofs.y=keys["yoffset"].to_int();
int texture=0;
if (keys.has("page"))
texture=keys["page"].to_int();
int advance=-1;
if (keys.has("xadvance"))
advance=keys["xadvance"].to_int();
font->add_char(idx,texture,rect,ofs,advance);
} else if (type=="kerning") {
CharType first=0,second=0;
int k=0;
if (keys.has("first"))
first=keys["first"].to_int();
if (keys.has("second"))
second=keys["second"].to_int();
if (keys.has("amount"))
k=keys["amount"].to_int();
font->add_kerning_pair(first,second,-k);
}
if (f->eof_reached())
break;
}
memdelete(f);
}
void FontEditor::_import_ttf(const String& p_string) {
#ifdef FREETYPE_ENABLED
FT_Library library; /* handle to library */
FT_Face face; /* handle to face object */
Vector<FontData*> font_data_list;
int error = FT_Init_FreeType( &library );
ERR_EXPLAIN("Error initializing FreeType.");
ERR_FAIL_COND( error !=0 );
error = FT_New_Face( library, p_string.utf8().get_data(),0,&face );
if ( error == FT_Err_Unknown_File_Format ) {
ERR_EXPLAIN("Unknown font format.");
FT_Done_FreeType( library );
} else if ( error ) {
ERR_EXPLAIN("Error loading font.");
FT_Done_FreeType( library );
}
ERR_FAIL_COND(error);
int height=0;
int ascent=0;
int font_spacing=0;
int size=font_size->get_text().to_int();
error = FT_Set_Char_Size(face,0,64*size,512,512);
if ( error ) {
FT_Done_FreeType( library );
ERR_EXPLAIN("Invalid font size. ");
ERR_FAIL_COND( error );
}
error = FT_Set_Pixel_Sizes(face,0,size);
FT_GlyphSlot slot = face->glyph;
// error = FT_Set_Charmap(face,ft_encoding_unicode ); /* encoding.. */
/* PRINT CHARACTERS TO INDIVIDUAL BITMAPS */
// int space_size=5; //size for space, if none found.. 5!
// int min_valign=500; //some ridiculous number
FT_ULong charcode;
FT_UInt gindex;
int max_up=-1324345; ///gibberish
int max_down=124232;
Map<KerningKey,int> kerning_map;
charcode = FT_Get_First_Char( face, &gindex );
int xsize=0;
while ( gindex != 0 )
{
bool skip=false;
error = FT_Load_Char( face, charcode, FT_LOAD_RENDER );
if (error) skip=true;
else error = FT_Render_Glyph( face->glyph, ft_render_mode_normal );
if (error) skip=true;
if (!skip && (import_chars.has(charcode) && import_chars[charcode] != 0)) {
skip = false;
} else {
if (import_option->get_selected() == 0 && charcode>127)
skip=true;
if (import_option->get_selected() == 1 && charcode>0xFE)
skip=true;
};
if (charcode<=32) //
skip=true;
if (skip) {
charcode=FT_Get_Next_Char(face,charcode,&gindex);
continue;
}
FontData * fdata = memnew( FontData );
fdata->bitmap.resize( slot->bitmap.width*slot->bitmap.rows );
fdata->width=slot->bitmap.width;
fdata->height=slot->bitmap.rows;
fdata->character=charcode;
fdata->glyph=FT_Get_Char_Index(face,charcode);
if (charcode=='x')
xsize=slot->bitmap.width;
if (charcode<127) {
if (slot->bitmap_top>max_up) {
max_up=slot->bitmap_top;
}
if ( (slot->bitmap_top - fdata->height)<max_down ) {
max_down=slot->bitmap_top - fdata->height;
}
}
fdata->valign=slot->bitmap_top;
fdata->halign=slot->bitmap_left;
fdata->advance=(slot->advance.x+(1<<5))>>6;
fdata->advance+=font_spacing;
for (int i=0;i<slot->bitmap.width;i++) {
for (int j=0;j<slot->bitmap.rows;j++) {
fdata->bitmap[j*slot->bitmap.width+i]=slot->bitmap.buffer[j*slot->bitmap.width+i];
}
}
font_data_list.push_back(fdata);
charcode=FT_Get_Next_Char(face,charcode,&gindex);
// printf("reading char %i\n",charcode);
}
/* SPACE */
FontData *spd = memnew( FontData );
spd->advance=0;
spd->character=' ';
spd->halign=0;
spd->valign=0;
spd->width=0;
spd->height=0;
spd->ofs_x=0;
spd->ofs_y=0;
if (!FT_Load_Char( face, ' ', FT_LOAD_RENDER ) && !FT_Render_Glyph( face->glyph, ft_render_mode_normal )) {
spd->advance = slot->advance.x>>6;
spd->advance+=font_spacing;
} else {
spd->advance=xsize;
spd->advance+=font_spacing;
}
font_data_list.push_back(spd);
Map<CharType, bool> exported;
for (int i=0; i<font_data_list.size(); i++) {
exported[font_data_list[i]->character] = true;
};
int missing = 0;
for(Map<CharType,int>::Element *E=import_chars.front();E;E=E->next()) {
CharType c = E->key();
if (!exported.has(c)) {
CharType str[2] = {c, 0};
printf("** Warning: character %i (%ls) not exported\n", (int)c, str);
++missing;
};
};
printf("total %i/%i\n", missing, import_chars.size());
/* KERNING */
for(int i=0;i<font_data_list.size();i++) {
for(int j=0;j<font_data_list.size();j++) {
FT_Vector delta;
FT_Get_Kerning( face, font_data_list[i]->glyph,font_data_list[j]->glyph, FT_KERNING_DEFAULT, &delta );
if (delta.x!=0) {
KerningKey kpk;
kpk.A = font_data_list[i]->character;
kpk.B = font_data_list[j]->character;
int kern = ((-delta.x)+(1<<5))>>6;
if (kern==0)
continue;
kerning_map[kpk]=kern;
}
}
}
height=max_up-max_down;
ascent=max_up;
/* FIND OUT WHAT THE FONT HEIGHT FOR THIS IS */
/* ADJUST THE VALIGN FOR EACH CHARACTER */
for (int i=0;i<(int)font_data_list.size();i++) {
font_data_list[i]->valign=max_up-font_data_list[i]->valign;
}
/* ADD THE SPACEBAR CHARACTER */
/*
FontData * fdata = new FontData;
fdata->character=32;
fdata->bitmap=0;
fdata->width=xsize;
fdata->height=1;
fdata->valign=0;
font_data_list.push_back(fdata);
*/
/* SORT BY HEIGHT, SO THEY FIT BETTER ON THE TEXTURE */
font_data_list.sort_custom<FontDataSort>();
int spacing=2;
int use_width=256;
int use_max_height=256;
// int surf_idx=-1;
List<Size2> tex_sizes;
// int current_texture=0;
Size2 first(use_width,nearest_power_of_2( font_data_list[0]->height + spacing ));
Size2 *curtex=&tex_sizes.push_back(first)->get();
Point2 tex_ofs;
/* FIT (NOT COPY YEY) FACES IN TEXTURES */
int current_height=font_data_list[0]->height + spacing;
int font_margin=2;
for(int i=0;i<font_data_list.size();i++) {
FontData *fd=font_data_list[i];
if (tex_ofs.x+fd->width >= use_width) {
//end of column, advance a row
tex_ofs.x=0;
tex_ofs.y+=current_height+font_margin;
current_height=fd->height + spacing;
int new_tex_h = curtex->height;
while( tex_ofs.y+current_height > new_tex_h ) {
if (curtex->height * 2 > use_max_height) {
//oops, can't use this texture anymore..
Size2 newtex( use_width, nearest_power_of_2( fd->height + spacing ));
new_tex_h=newtex.height;
curtex=&tex_sizes.push_back(newtex)->get();
tex_ofs=Point2(0,0);
} else {
new_tex_h*=2;
}
}
curtex->height=new_tex_h;
}
fd->ofs_x=tex_ofs.x;
fd->ofs_y=tex_ofs.y;
fd->texture=tex_sizes.size()-1;
tex_ofs.x+=fd->width+font_margin;
}
/* WRITE FACES IN TEXTURES */
// create textures
Vector<DVector<uint8_t> >image_data;
Vector<int> image_widths;
Vector<DVector<uint8_t>::Write> image_ptrs;
image_ptrs.resize(tex_sizes.size());
for(int i=0;i<tex_sizes.size();i++) {
DVector<uint8_t> pixels;
int texsize=tex_sizes[i].width * tex_sizes[i].height * 2;
pixels.resize(texsize );
image_data.push_back(pixels);
image_widths.push_back( tex_sizes[i].width );
image_ptrs[i] = image_data[i].write();
for(int j=0;j<texsize;j++) {
image_ptrs[i][j]=0;
}
}
//blit textures with fonts
for(int i=0;i<font_data_list.size();i++) {
FontData *fd=font_data_list[i];
uint8_t *pixels = image_ptrs[fd->texture].ptr();
int width = image_widths[fd->texture];
for(int y=0;y<fd->height;y++) {
const uint8_t *src = &fd->bitmap[y*fd->width];
uint8_t *dst = &pixels[((fd->ofs_y+y)*width+fd->ofs_x)*2];
for(int x=0;x<fd->width;x++) {
dst[x<<1]=255; //white always
dst[(x<<1) +1]=src[x];
}
}
}
//unlock writing
for(int i=0;i<image_ptrs.size();i++)
image_ptrs[i]=DVector<uint8_t>::Write();
/* CREATE FONT */
font->clear();
font->set_height(height);
font->set_ascent(ascent);
//register texures
for(int i=0;i<tex_sizes.size();i++) {
Image img(tex_sizes[i].width,tex_sizes[i].height,0,Image::FORMAT_GRAYSCALE_ALPHA,image_data[i]);
Ref<ImageTexture> tex = memnew( ImageTexture );
tex->create_from_image(img,0); //no filter, no repeat
font->add_texture(tex);
//tframe->set_texture(tex);
}
//register characters
for(int i=0;i<font_data_list.size();i++) {
FontData *fd=font_data_list[i];
font->add_char(fd->character,fd->texture,Rect2( fd->ofs_x, fd->ofs_y, fd->width, fd->height),Point2(fd->halign,fd->valign), fd->advance);
memdelete(fd);
}
for(Map<KerningKey,int>::Element *E=kerning_map.front();E;E=E->next()) {
font->add_kerning_pair(E->key().A,E->key().B,E->get());
}
FT_Done_FreeType( library );
#endif
}
void FontEditor::_add_source() {
_source_file->popup_centered_ratio();
};
void FontEditor::_add_source_accept(const String& p_file) {
FileAccess* f = FileAccess::open(p_file, FileAccess::READ);
ERR_FAIL_COND(!f);
String line;
while ( !f->eof_reached() ) {
line = f->get_line();
for (int i=0; i<line.length(); i++) {
if (import_chars.has(line[i])) {
import_chars[line[i]] = import_chars[line[i]] + 1;
} else {
import_chars[line[i]] = 1;
};
};
};
};
void FontEditor::_export_fnt_pressed() {
_export_file->popup_centered_ratio();
};
void FontEditor::_export_fnt_accept(const String& p_file) {
String name = p_file.replace(".fnt", "");
_export_fnt(name, font);
};
void FontEditor::_import_accept(const String& p_string) {
#ifdef FREETYPE_ENABLED
if (p_string.extension().nocasecmp_to("ttf")==0 || p_string.extension().nocasecmp_to("otf")==0) {
_import_ttf(p_string);
}
#endif
if (p_string.extension().nocasecmp_to("fnt")==0) {
_import_fnt(p_string);
}
label->add_font_override("font",font);
label->notification(Control::NOTIFICATION_THEME_CHANGED);
label->update();
}
void FontEditor::_import() {
file->popup_centered_ratio();
}
void FontEditor::_bind_methods() {
ObjectTypeDB::bind_method("_import",&FontEditor::_import);
ObjectTypeDB::bind_method("_import_accept",&FontEditor::_import_accept);
ObjectTypeDB::bind_method("_preview_text_changed",&FontEditor::_preview_text_changed);
ObjectTypeDB::bind_method("_add_source",&FontEditor::_add_source);
ObjectTypeDB::bind_method("_add_source_accept",&FontEditor::_add_source_accept);
ObjectTypeDB::bind_method("_export_fnt_pressed",&FontEditor::_export_fnt_pressed);
ObjectTypeDB::bind_method("_export_fnt_accept",&FontEditor::_export_fnt_accept);
}
FontEditor::FontEditor() {
panel = memnew( Panel );
add_child(panel);
panel->set_area_as_parent_rect();
/*
tframe = memnew( TextureFrame );
tframe->set_anchor( MARGIN_RIGHT, ANCHOR_END );
tframe->set_anchor( MARGIN_BOTTOM, ANCHOR_END );
tframe->set_begin( Point2(5, 40 ) );
tframe->set_end( Point2(5,55 ) );
panel->add_child(tframe);
*/
Label *l = memnew( Label );
l->set_pos( Point2(5,13 ) );
l->set_text("Import: ");
panel->add_child(l);
l = memnew( Label );
l->set_pos( Point2(25,37 ) );
l->set_text("Size: ");
panel->add_child(l);
font_size = memnew( LineEdit );
font_size->set_text("12");
font_size->set_pos( Point2(70,35 ) );
font_size->set_size( Size2(40,10 ) );
panel->add_child(font_size);
l = memnew( Label );
l->set_pos( Point2(140,37 ) );
l->set_text("Encoding: ");
panel->add_child(l);
import_option = memnew( OptionButton );
import_option->add_item("Ascii");
import_option->add_item("Latin");
import_option->add_item("Full Unicode");
import_option->select(1);
import_option->set_pos( Point2( 215,35 ) );
import_option->set_size( Point2( 100,12 ) );
panel->add_child(import_option);
Button* import = memnew( Button );
import->set_text("Import:..");
import->set_begin( Point2(80,35) );
import->set_end( Point2(10,45) );
import->set_anchor( MARGIN_LEFT, ANCHOR_END );
import->set_anchor( MARGIN_RIGHT, ANCHOR_END );
panel->add_child(import);
Button* add_source = memnew( Button );
add_source->set_text("Add Source...");
add_source->set_begin( Point2(180,35) );
add_source->set_end( Point2(90,45) );
add_source->set_anchor( MARGIN_LEFT, ANCHOR_END );
add_source->set_anchor( MARGIN_RIGHT, ANCHOR_END );
panel->add_child(add_source);
file = memnew( FileDialog );
file->set_access(FileDialog::ACCESS_FILESYSTEM);
_source_file = memnew( FileDialog );
_source_file->set_access(FileDialog::ACCESS_FILESYSTEM);
_source_file->set_mode(FileDialog::MODE_OPEN_FILE);
_source_file->connect("file_selected", this, "_add_source_accept");
panel->add_child( _source_file );
Button* export_fnt = memnew(Button);
export_fnt->set_text("Export fnt");
export_fnt->set_begin(Point2(80, 65));
export_fnt->set_end(Point2(10, 75));
export_fnt->set_anchor( MARGIN_LEFT, ANCHOR_END );
export_fnt->set_anchor( MARGIN_RIGHT, ANCHOR_END );
export_fnt->connect("pressed", this, "_export_fnt_pressed");
panel->add_child( export_fnt );
_export_file = memnew(FileDialog);
_export_file->set_access(FileDialog::ACCESS_FILESYSTEM);
_export_file->set_mode(FileDialog::MODE_SAVE_FILE);
_export_file->connect("file_selected", this, "_export_fnt_accept");
panel->add_child(_export_file);
l = memnew( Label );
l->set_pos( Point2(5,65 ) );
l->set_text("Preview Text: ");
panel->add_child(l);
preview_text = memnew( LineEdit );
preview_text->set_anchor( MARGIN_RIGHT, ANCHOR_END );
preview_text->set_begin( Point2(25,85 ) );
preview_text->set_end( Point2(10,95 ) );
panel->add_child(preview_text);
preview_text->connect("text_changed", this,"_preview_text_changed");
preview_text->set_text("The quick brown fox jumped over the lazy dog.");
l = memnew( Label );
l->set_pos( Point2(5,115 ) );
l->set_text("Preview: ");
panel->add_child(l);
label = memnew( Label );
label->set_autowrap(true);
label->set_anchor( MARGIN_RIGHT, ANCHOR_END );
label->set_anchor( MARGIN_BOTTOM, ANCHOR_END );
label->set_begin( Point2(5, 135 ) );
label->set_end( Point2(5,5 ) );
label->set_text("The quick brown fox jumped over the lazy dog.");
label->set_align( Label::ALIGN_CENTER );
panel->add_child(label);
#ifdef FREETYPE_ENABLED
file->add_filter("*.ttf");
file->add_filter("*.otf");
#endif
file->add_filter("*.fnt ; AngelCode BMFont");
file->set_mode(FileDialog::MODE_OPEN_FILE);
panel->add_child( file );
import->connect("pressed", this,"_import");
file->connect("file_selected", this,"_import_accept");
add_source->connect("pressed", this, "_add_source");
}
void FontEditorPlugin::edit(Object *p_node) {
if (p_node && p_node->cast_to<Font>()) {
font_editor->edit( p_node->cast_to<Font>() );
font_editor->show();
} else
font_editor->hide();
}
bool FontEditorPlugin::handles(Object *p_node) const{
return p_node->is_type("Font");
}
void FontEditorPlugin::make_visible(bool p_visible){
if (p_visible)
font_editor->show();
else
font_editor->hide();
}
FontEditorPlugin::FontEditorPlugin(EditorNode *p_node) {
font_editor = memnew( FontEditor );
p_node->get_viewport()->add_child(font_editor);
font_editor->set_area_as_parent_rect();
font_editor->hide();
}
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