godot/editor/io_plugins/editor_font_import_plugin.cpp

/*************************************************************************/
/*  editor_font_import_plugin.cpp                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 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 "editor_font_import_plugin.h"
#include "editor/editor_file_dialog.h"
#include "editor/editor_node.h"
#include "editor_atlas.h"
#include "io/image_loader.h"
#include "io/resource_saver.h"
#include "os/file_access.h"
#include "scene/gui/dialogs.h"
#ifdef FREETYPE_ENABLED

#include <ft2build.h>
#include FT_FREETYPE_H

#endif

class _EditorFontImportOptions : public Object {

	OBJ_TYPE(_EditorFontImportOptions, Object);

public:
	enum FontMode {

		FONT_BITMAP,
		FONT_DISTANCE_FIELD
	};

	enum ColorType {
		COLOR_WHITE,
		COLOR_CUSTOM,
		COLOR_GRADIENT_RANGE,
		COLOR_GRADIENT_IMAGE
	};

	int char_extra_spacing;
	int top_extra_spacing;
	int bottom_extra_spacing;
	int space_extra_spacing;

	enum CharacterSet {

		CHARSET_ASCII,
		CHARSET_LATIN,
		CHARSET_UNICODE,
		CHARSET_CUSTOM,
		CHARSET_CUSTOM_LATIN
	};

	FontMode font_mode;

	CharacterSet character_set;
	String custom_file;

	bool shadow;
	Vector2 shadow_offset;
	int shadow_radius;
	Color shadow_color;
	float shadow_transition;

	bool shadow2;
	Vector2 shadow2_offset;
	int shadow2_radius;
	Color shadow2_color;
	float shadow2_transition;

	ColorType color_type;
	Color color;
	Color gradient_begin;
	Color gradient_end;
	bool color_use_monochrome;
	String gradient_image;

	bool disable_filter;
	bool round_advance;
	bool premultiply_alpha;

	bool _set(const StringName &p_name, const Variant &p_value) {

		String n = p_name;
		if (n == "mode/mode") {
			font_mode = FontMode(int(p_value));
			_change_notify();
		} else if (n == "extra_space/char")
			char_extra_spacing = p_value;
		else if (n == "extra_space/space")
			space_extra_spacing = p_value;
		else if (n == "extra_space/top")
			top_extra_spacing = p_value;
		else if (n == "extra_space/bottom")
			bottom_extra_spacing = p_value;

		else if (n == "character_set/mode") {
			character_set = CharacterSet(int(p_value));
			_change_notify();
		} else if (n == "character_set/custom")
			custom_file = p_value;

		else if (n == "shadow/enabled") {
			shadow = p_value;
			_change_notify();
		} else if (n == "shadow/radius")
			shadow_radius = p_value;
		else if (n == "shadow/offset")
			shadow_offset = p_value;
		else if (n == "shadow/color")
			shadow_color = p_value;
		else if (n == "shadow/transition")
			shadow_transition = p_value;

		else if (n == "shadow2/enabled") {
			shadow2 = p_value;
			_change_notify();
		} else if (n == "shadow2/radius")
			shadow2_radius = p_value;
		else if (n == "shadow2/offset")
			shadow2_offset = p_value;
		else if (n == "shadow2/color")
			shadow2_color = p_value;
		else if (n == "shadow2/transition")
			shadow2_transition = p_value;

		else if (n == "color/mode") {
			color_type = ColorType(int(p_value));
			_change_notify();
		} else if (n == "color/color")
			color = p_value;
		else if (n == "color/begin")
			gradient_begin = p_value;
		else if (n == "color/end")
			gradient_end = p_value;
		else if (n == "color/image")
			gradient_image = p_value;
		else if (n == "color/monochrome")
			color_use_monochrome = p_value;
		else if (n == "advanced/round_advance")
			round_advance = p_value;
		else if (n == "advanced/disable_filter")
			disable_filter = p_value;
		else if (n == "advanced/premultiply_alpha")
			premultiply_alpha = p_value;
		else
			return false;

		emit_signal("changed");

		return true;
	}

	bool _get(const StringName &p_name, Variant &r_ret) const {

		String n = p_name;
		if (n == "mode/mode")
			r_ret = font_mode;
		else if (n == "extra_space/char")
			r_ret = char_extra_spacing;
		else if (n == "extra_space/space")
			r_ret = space_extra_spacing;
		else if (n == "extra_space/top")
			r_ret = top_extra_spacing;
		else if (n == "extra_space/bottom")
			r_ret = bottom_extra_spacing;

		else if (n == "character_set/mode")
			r_ret = character_set;
		else if (n == "character_set/custom")
			r_ret = custom_file;

		else if (n == "shadow/enabled")
			r_ret = shadow;
		else if (n == "shadow/radius")
			r_ret = shadow_radius;
		else if (n == "shadow/offset")
			r_ret = shadow_offset;
		else if (n == "shadow/color")
			r_ret = shadow_color;
		else if (n == "shadow/transition")
			r_ret = shadow_transition;

		else if (n == "shadow2/enabled")
			r_ret = shadow2;
		else if (n == "shadow2/radius")
			r_ret = shadow2_radius;
		else if (n == "shadow2/offset")
			r_ret = shadow2_offset;
		else if (n == "shadow2/color")
			r_ret = shadow2_color;
		else if (n == "shadow2/transition")
			r_ret = shadow2_transition;

		else if (n == "color/mode")
			r_ret = color_type;
		else if (n == "color/color")
			r_ret = color;
		else if (n == "color/begin")
			r_ret = gradient_begin;
		else if (n == "color/end")
			r_ret = gradient_end;
		else if (n == "color/image")
			r_ret = gradient_image;
		else if (n == "color/monochrome")
			r_ret = color_use_monochrome;
		else if (n == "advanced/round_advance")
			r_ret = round_advance;
		else if (n == "advanced/disable_filter")
			r_ret = disable_filter;
		else if (n == "advanced/premultiply_alpha")
			r_ret = premultiply_alpha;
		else
			return false;

		return true;
	}

	void _get_property_list(List<PropertyInfo> *p_list) const {

		p_list->push_back(PropertyInfo(Variant::INT, "mode/mode", PROPERTY_HINT_ENUM, "Bitmap,Distance Field"));

		p_list->push_back(PropertyInfo(Variant::INT, "extra_space/char", PROPERTY_HINT_RANGE, "-64,64,1"));
		p_list->push_back(PropertyInfo(Variant::INT, "extra_space/space", PROPERTY_HINT_RANGE, "-64,64,1"));
		p_list->push_back(PropertyInfo(Variant::INT, "extra_space/top", PROPERTY_HINT_RANGE, "-64,64,1"));
		p_list->push_back(PropertyInfo(Variant::INT, "extra_space/bottom", PROPERTY_HINT_RANGE, "-64,64,1"));
		p_list->push_back(PropertyInfo(Variant::INT, "character_set/mode", PROPERTY_HINT_ENUM, "Ascii,Latin,Unicode,Custom,Custom&Latin"));

		if (character_set >= CHARSET_CUSTOM)
			p_list->push_back(PropertyInfo(Variant::STRING, "character_set/custom", PROPERTY_HINT_GLOBAL_FILE));

		int usage = PROPERTY_USAGE_DEFAULT;

		if (font_mode == FONT_DISTANCE_FIELD) {
			usage = PROPERTY_USAGE_NOEDITOR;
		}

		{

			p_list->push_back(PropertyInfo(Variant::BOOL, "shadow/enabled", PROPERTY_HINT_NONE, "", usage));
			if (shadow) {
				p_list->push_back(PropertyInfo(Variant::INT, "shadow/radius", PROPERTY_HINT_RANGE, "-64,64,1", usage));
				p_list->push_back(PropertyInfo(Variant::VECTOR2, "shadow/offset", PROPERTY_HINT_NONE, "", usage));
				p_list->push_back(PropertyInfo(Variant::COLOR, "shadow/color", PROPERTY_HINT_NONE, "", usage));
				p_list->push_back(PropertyInfo(Variant::REAL, "shadow/transition", PROPERTY_HINT_EXP_EASING, "", usage));
			}

			p_list->push_back(PropertyInfo(Variant::BOOL, "shadow2/enabled", PROPERTY_HINT_NONE, "", usage));
			if (shadow2) {
				p_list->push_back(PropertyInfo(Variant::INT, "shadow2/radius", PROPERTY_HINT_RANGE, "-64,64,1", usage));
				p_list->push_back(PropertyInfo(Variant::VECTOR2, "shadow2/offset", PROPERTY_HINT_NONE, "", usage));
				p_list->push_back(PropertyInfo(Variant::COLOR, "shadow2/color", PROPERTY_HINT_NONE, "", usage));
				p_list->push_back(PropertyInfo(Variant::REAL, "shadow2/transition", PROPERTY_HINT_EXP_EASING, "", usage));
			}

			p_list->push_back(PropertyInfo(Variant::INT, "color/mode", PROPERTY_HINT_ENUM, "White,Color,Gradient,Gradient Image", usage));
			if (color_type == COLOR_CUSTOM) {
				p_list->push_back(PropertyInfo(Variant::COLOR, "color/color", PROPERTY_HINT_NONE, "", usage));
			}
			if (color_type == COLOR_GRADIENT_RANGE) {
				p_list->push_back(PropertyInfo(Variant::COLOR, "color/begin", PROPERTY_HINT_NONE, "", usage));
				p_list->push_back(PropertyInfo(Variant::COLOR, "color/end", PROPERTY_HINT_NONE, "", usage));
			}
			if (color_type == COLOR_GRADIENT_IMAGE) {
				p_list->push_back(PropertyInfo(Variant::STRING, "color/image", PROPERTY_HINT_GLOBAL_FILE, "", usage));
			}
			p_list->push_back(PropertyInfo(Variant::BOOL, "color/monochrome", PROPERTY_HINT_NONE, "", usage));
		}

		p_list->push_back(PropertyInfo(Variant::BOOL, "advanced/round_advance"));
		p_list->push_back(PropertyInfo(Variant::BOOL, "advanced/disable_filter"));
		p_list->push_back(PropertyInfo(Variant::BOOL, "advanced/premultiply_alpha"));
	}

	static void _bind_methods() {

		ADD_SIGNAL(MethodInfo("changed"));
	}

	void reset() {

		char_extra_spacing = 0;
		top_extra_spacing = 0;
		bottom_extra_spacing = 0;
		space_extra_spacing = 0;

		character_set = CHARSET_LATIN;

		shadow = false;
		shadow_radius = 2;
		shadow_color = Color(0, 0, 0, 0.3);
		shadow_transition = 1.0;

		shadow2 = false;
		shadow2_radius = 2;
		shadow2_color = Color(0, 0, 0, 0.3);
		shadow2_transition = 1.0;

		color_type = COLOR_WHITE;
		color = Color(1, 1, 1, 1);
		gradient_begin = Color(1, 1, 1, 1);
		gradient_end = Color(0.5, 0.5, 0.5, 1);
		color_use_monochrome = false;

		font_mode = FONT_BITMAP;
		round_advance = true;
		disable_filter = false;
		premultiply_alpha = false;
	}

	_EditorFontImportOptions() {

		font_mode = FONT_BITMAP;

		char_extra_spacing = 0;
		top_extra_spacing = 0;
		bottom_extra_spacing = 0;
		space_extra_spacing = 0;

		character_set = CHARSET_LATIN;

		shadow = false;
		shadow_radius = 2;
		shadow_color = Color(0, 0, 0, 0.3);
		shadow_transition = 1.0;

		shadow2 = false;
		shadow2_radius = 2;
		shadow2_color = Color(0, 0, 0, 0.3);
		shadow2_transition = 1.0;

		color_type = COLOR_WHITE;
		color = Color(1, 1, 1, 1);
		gradient_begin = Color(1, 1, 1, 1);
		gradient_end = Color(0.5, 0.5, 0.5, 1);
		color_use_monochrome = false;

		round_advance = true;
		disable_filter = false;
		premultiply_alpha = false;
	}
};

class EditorFontImportDialog : public ConfirmationDialog {

	OBJ_TYPE(EditorFontImportDialog, ConfirmationDialog);

	EditorLineEditFileChooser *source;
	EditorLineEditFileChooser *dest;
	SpinBox *font_size;
	LineEdit *test_string;
	ColorPickerButton *test_color;
	Label *test_label;
	PropertyEditor *prop_edit;
	Timer *timer;
	ConfirmationDialog *error_dialog;

	Ref<ResourceImportMetadata> get_rimd() {

		Ref<ResourceImportMetadata> imd = memnew(ResourceImportMetadata);
		List<PropertyInfo> pl;
		options->_get_property_list(&pl);
		for (List<PropertyInfo>::Element *E = pl.front(); E; E = E->next()) {

			Variant v;
			String opt = E->get().name;
			options->_get(opt, v);
			if (opt == "color/image" || opt == "character_set/custom") {
				v = EditorImportPlugin::validate_source_path(v);
			}
			imd->set_option(opt, v);
		}

		String src_path = EditorImportPlugin::validate_source_path(source->get_line_edit()->get_text());
		//print_line("pre src path "+source->get_line_edit()->get_text());
		//print_line("src path "+src_path);
		imd->add_source(src_path);
		imd->set_option("font/size", font_size->get_val());

		return imd;
	}

	void _src_changed(String) {
		_prop_changed();
	}

	void _update_text2(String) {
		_update_text();
	}
	void _update_text3(Color) {
		_update_text();
	}

	void _update_text() {

		test_label->set_text("");
		test_label->set_text(test_string->get_text());
		test_label->add_color_override("font_color", test_color->get_color());
	}

	void _update() {

		Ref<ResourceImportMetadata> imd = get_rimd();
		Ref<BitmapFont> font = plugin->generate_font(imd);
		test_label->add_font_override("font", font);
		_update_text();
	}

	void _font_size_changed(double) {

		_prop_changed();
	}

	void _prop_changed() {

		timer->start();
	}

	void _import_inc(String p_font) {

		Ref<BitmapFont> font = ResourceLoader::load(p_font);
		if (!font.is_valid())
			return;
		Ref<ImageTexture> tex = font->get_texture(0);
		if (tex.is_null())
			return;
		FileAccessRef f = FileAccess::open(p_font.basename() + ".inc", FileAccess::WRITE);
		Vector<CharType> ck = font->get_char_keys();

		f->store_line("static const int _builtin_font_height=" + itos(font->get_height()) + ";");
		f->store_line("static const int _builtin_font_ascent=" + itos(font->get_ascent()) + ";");
		f->store_line("static const int _builtin_font_charcount=" + itos(ck.size()) + ";");
		f->store_line("static const int _builtin_font_charrects[" + itos(ck.size()) + "][8]={");
		f->store_line("/* charidx , ofs_x, ofs_y, size_x, size_y, valign, halign, advance */");

		for (int i = 0; i < ck.size(); i++) {
			CharType k = ck[i];
			BitmapFont::Character c = font->get_character(k);
			f->store_line("{" + itos(k) + "," + rtos(c.rect.pos.x) + "," + rtos(c.rect.pos.y) + "," + rtos(c.rect.size.x) + "," + rtos(c.rect.size.y) + "," + rtos(c.v_align) + "," + rtos(c.h_align) + "," + rtos(c.advance) + "},");
		}
		f->store_line("};");

		Vector<BitmapFont::KerningPairKey> kp = font->get_kerning_pair_keys();
		f->store_line("static const int _builtin_font_kerning_pair_count=" + itos(kp.size()) + ";");
		f->store_line("static const int _builtin_font_kerning_pairs[" + itos(kp.size()) + "][3]={");
		for (int i = 0; i < kp.size(); i++) {

			int d = font->get_kerning_pair(kp[i].A, kp[i].B);
			f->store_line("{" + itos(kp[i].A) + "," + itos(kp[i].B) + "," + itos(d) + "},");
		}

		f->store_line("};");
		Image img = tex->get_data();

		f->store_line("static const int _builtin_font_img_width=" + itos(img.get_width()) + ";");
		f->store_line("static const int _builtin_font_img_height=" + itos(img.get_height()) + ";");

		String fname = p_font.basename() + ".sv.png";
		ResourceSaver::save(fname, tex);
		Vector<uint8_t> data = FileAccess::get_file_as_array(fname);

		f->store_line("static const int _builtin_font_img_data_size=" + itos(data.size()) + ";");
		f->store_line("static const unsigned char _builtin_font_img_data[" + itos(data.size()) + "]={");

		for (int i = 0; i < data.size(); i++) {

			f->store_line(itos(data[i]) + ",");
		}
		f->store_line("};");
	}

	void _import() {

		if (source->get_line_edit()->get_text() == "") {
			error_dialog->set_text(TTR("No source font file!"));
			error_dialog->popup_centered(Size2(200, 100) * EDSCALE);
			return;
		}

		if (dest->get_line_edit()->get_text() == "") {
			error_dialog->set_text(TTR("No target font resource!"));
			error_dialog->popup_centered(Size2(200, 100) * EDSCALE);
			return;
		}

		if (dest->get_line_edit()->get_text().get_file() == ".fnt") {
			dest->get_line_edit()->set_text(dest->get_line_edit()->get_text().get_base_dir() + "/" + source->get_line_edit()->get_text().get_file().basename() + ".fnt");
		}

		if (dest->get_line_edit()->get_text().extension() == dest->get_line_edit()->get_text()) {
			dest->get_line_edit()->set_text(dest->get_line_edit()->get_text() + ".fnt");
		}

		if (dest->get_line_edit()->get_text().extension().to_lower() != "fnt") {
			error_dialog->set_text(TTR("Invalid file extension.\nPlease use .fnt."));
			error_dialog->popup_centered(Size2(200, 100));
			return;
		}

		Ref<ResourceImportMetadata> rimd = get_rimd();

		if (rimd.is_null()) {
			error_dialog->set_text(TTR("Can't load/process source font."));
			error_dialog->popup_centered(Size2(200, 100) * EDSCALE);
			return;
		}

		Error err = plugin->import(dest->get_line_edit()->get_text(), rimd);

		if (err != OK) {
			error_dialog->set_text(TTR("Couldn't save font."));
			error_dialog->popup_centered(Size2(200, 100) * EDSCALE);
			return;
		}

		_import_inc(dest->get_line_edit()->get_text());

		hide();
	}

	EditorFontImportPlugin *plugin;
	_EditorFontImportOptions *options;

	static void _bind_methods() {

		ObjectTypeDB::bind_method("_update", &EditorFontImportDialog::_update);
		ObjectTypeDB::bind_method("_update_text", &EditorFontImportDialog::_update_text);
		ObjectTypeDB::bind_method("_update_text2", &EditorFontImportDialog::_update_text2);
		ObjectTypeDB::bind_method("_update_text3", &EditorFontImportDialog::_update_text3);
		ObjectTypeDB::bind_method("_prop_changed", &EditorFontImportDialog::_prop_changed);
		ObjectTypeDB::bind_method("_src_changed", &EditorFontImportDialog::_src_changed);
		ObjectTypeDB::bind_method("_font_size_changed", &EditorFontImportDialog::_font_size_changed);
		ObjectTypeDB::bind_method("_import", &EditorFontImportDialog::_import);
	}

public:
	void _notification(int p_what) {

		if (p_what == NOTIFICATION_ENTER_TREE) {
			prop_edit->edit(options);
			_update_text();
		}
	}

	void popup_import(const String &p_path) {

		popup_centered(Size2(600, 500) * EDSCALE);

		if (p_path != "") {

			Ref<ResourceImportMetadata> rimd = ResourceLoader::load_import_metadata(p_path);
			ERR_FAIL_COND(!rimd.is_valid());

			dest->get_line_edit()->set_text(p_path);
			List<String> opts;
			rimd->get_options(&opts);
			options->reset();
			for (List<String>::Element *E = opts.front(); E; E = E->next()) {

				options->_set(E->get(), rimd->get_option(E->get()));
			}

			String src = "";
			for (int i = 0; i < rimd->get_source_count(); i++) {
				if (i > 0)
					src += ",";
				src += EditorImportPlugin::expand_source_path(rimd->get_source_path(i));
			}
			source->get_line_edit()->set_text(src);

			font_size->set_val(rimd->get_option("font/size"));
		}
	}

	void set_source_and_dest(const String &p_font, const String &p_dest) {
		source->get_line_edit()->set_text(p_font);
		dest->get_line_edit()->set_text(p_dest);
		_prop_changed();
	}

	EditorFontImportDialog(EditorFontImportPlugin *p_plugin) {
		plugin = p_plugin;
		VBoxContainer *vbc = memnew(VBoxContainer);
		add_child(vbc);
		set_child_rect(vbc);
		HBoxContainer *hbc = memnew(HBoxContainer);
		vbc->add_child(hbc);
		VBoxContainer *vbl = memnew(VBoxContainer);
		hbc->add_child(vbl);
		hbc->set_v_size_flags(SIZE_EXPAND_FILL);
		vbl->set_h_size_flags(SIZE_EXPAND_FILL);
		VBoxContainer *vbr = memnew(VBoxContainer);
		hbc->add_child(vbr);
		vbr->set_h_size_flags(SIZE_EXPAND_FILL);

		source = memnew(EditorLineEditFileChooser);
		source->get_file_dialog()->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
		source->get_file_dialog()->set_mode(EditorFileDialog::MODE_OPEN_FILE);
		source->get_file_dialog()->add_filter("*.ttf;TrueType");
		source->get_file_dialog()->add_filter("*.otf;OpenType");
		source->get_file_dialog()->add_filter("*.fnt;BMFont");
		source->get_line_edit()->connect("text_entered", this, "_src_changed");

		vbl->add_margin_child(TTR("Source Font:"), source);
		font_size = memnew(SpinBox);
		vbl->add_margin_child(TTR("Source Font Size:"), font_size);
		font_size->set_min(3);
		font_size->set_max(256);
		font_size->set_val(16);
		font_size->connect("value_changed", this, "_font_size_changed");
		dest = memnew(EditorLineEditFileChooser);
		//
		List<String> fl;
		Ref<BitmapFont> font = memnew(BitmapFont);
		dest->get_file_dialog()->add_filter("*.fnt ; Font");
		//ResourceSaver::get_recognized_extensions(font,&fl);
		//for(List<String>::Element *E=fl.front();E;E=E->next()) {
		//	dest->get_file_dialog()->add_filter("*."+E->get());
		//}

		vbl->add_margin_child(TTR("Dest Resource:"), dest);
		HBoxContainer *testhb = memnew(HBoxContainer);
		test_string = memnew(LineEdit);
		test_string->set_text(TTR("The quick brown fox jumps over the lazy dog."));
		test_string->set_h_size_flags(SIZE_EXPAND_FILL);
		test_string->set_stretch_ratio(5);

		testhb->add_child(test_string);
		test_color = memnew(ColorPickerButton);
		test_color->set_color(get_color("font_color", "Label"));
		test_color->set_h_size_flags(SIZE_EXPAND_FILL);
		test_color->set_stretch_ratio(1);
		test_color->connect("color_changed", this, "_update_text3");
		testhb->add_child(test_color);

		vbl->add_spacer();
		vbl->add_margin_child(TTR("Test:") + " ", testhb);
		/*
		HBoxContainer *upd_hb = memnew( HBoxContainer );
//		vbl->add_child(upd_hb);
		upd_hb->add_spacer();
		Button *update = memnew( Button);
		upd_hb->add_child(update);
		update->set_text("Update");
		update->connect("pressed",this,"_update");
*/
		options = memnew(_EditorFontImportOptions);
		prop_edit = memnew(PropertyEditor());
		vbr->add_margin_child(TTR("Options:"), prop_edit, true);
		options->connect("changed", this, "_prop_changed");

		prop_edit->hide_top_label();

		Panel *panel = memnew(Panel);
		vbc->add_child(panel);
		test_label = memnew(Label);
		test_label->set_autowrap(true);
		panel->add_child(test_label);
		test_label->set_area_as_parent_rect();
		panel->set_v_size_flags(SIZE_EXPAND_FILL);
		test_string->connect("text_changed", this, "_update_text2");
		set_title(TTR("Font Import"));
		timer = memnew(Timer);
		add_child(timer);
		timer->connect("timeout", this, "_update");
		timer->set_wait_time(0.4);
		timer->set_one_shot(true);

		get_ok()->connect("pressed", this, "_import");
		get_ok()->set_text(TTR("Import"));

		error_dialog = memnew(ConfirmationDialog);
		add_child(error_dialog);
		error_dialog->get_ok()->set_text(TTR("Accept"));
		set_hide_on_ok(false);
	}

	~EditorFontImportDialog() {
		memdelete(options);
	}
};

///////////////////////////////////////

struct _EditorFontData {

	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;
	float advance;
	int character;
	int glyph;

	int texture;
	Image blit;
	Point2i blit_ofs;
	//	bool printable;
};

struct _EditorFontDataSort {

	bool operator()(const _EditorFontData *p_A, const _EditorFontData *p_B) const {
		return p_A->height > p_B->height;
	};
};

struct _EditorKerningKey {

	CharType A, B;
	bool operator<(const _EditorKerningKey &p_k) const { return (A == p_k.A) ? (B < p_k.B) : (A < p_k.A); }
};

static unsigned char get_SDF_radial(
		unsigned char *fontmap,
		int w, int h,
		int x, int y,
		int max_radius) {
	//	hideous brute force method
	float d2 = max_radius * max_radius + 1.0;
	unsigned char v = fontmap[x + y * w];
	for (int radius = 1; (radius <= max_radius) && (radius * radius < d2); ++radius) {
		int line, lo, hi;
		//	north
		line = y - radius;
		if ((line >= 0) && (line < h)) {
			lo = x - radius;
			hi = x + radius;
			if (lo < 0) {
				lo = 0;
			}
			if (hi >= w) {
				hi = w - 1;
			}
			int idx = line * w + lo;
			for (int i = lo; i <= hi; ++i) {
				//	check this pixel
				if (fontmap[idx] != v) {
					float nx = i - x;
					float ny = line - y;
					float nd2 = nx * nx + ny * ny;
					if (nd2 < d2) {
						d2 = nd2;
					}
				}
				//	move on
				++idx;
			}
		}
		//	south
		line = y + radius;
		if ((line >= 0) && (line < h)) {
			lo = x - radius;
			hi = x + radius;
			if (lo < 0) {
				lo = 0;
			}
			if (hi >= w) {
				hi = w - 1;
			}
			int idx = line * w + lo;
			for (int i = lo; i <= hi; ++i) {
				//	check this pixel
				if (fontmap[idx] != v) {
					float nx = i - x;
					float ny = line - y;
					float nd2 = nx * nx + ny * ny;
					if (nd2 < d2) {
						d2 = nd2;
					}
				}
				//	move on
				++idx;
			}
		}
		//	west
		line = x - radius;
		if ((line >= 0) && (line < w)) {
			lo = y - radius + 1;
			hi = y + radius - 1;
			if (lo < 0) {
				lo = 0;
			}
			if (hi >= h) {
				hi = h - 1;
			}
			int idx = lo * w + line;
			for (int i = lo; i <= hi; ++i) {
				//	check this pixel
				if (fontmap[idx] != v) {
					float nx = line - x;
					float ny = i - y;
					float nd2 = nx * nx + ny * ny;
					if (nd2 < d2) {
						d2 = nd2;
					}
				}
				//	move on
				idx += w;
			}
		}
		//	east
		line = x + radius;
		if ((line >= 0) && (line < w)) {
			lo = y - radius + 1;
			hi = y + radius - 1;
			if (lo < 0) {
				lo = 0;
			}
			if (hi >= h) {
				hi = h - 1;
			}
			int idx = lo * w + line;
			for (int i = lo; i <= hi; ++i) {
				//	check this pixel
				if (fontmap[idx] != v) {
					float nx = line - x;
					float ny = i - y;
					float nd2 = nx * nx + ny * ny;
					if (nd2 < d2) {
						d2 = nd2;
					}
				}
				//	move on
				idx += w;
			}
		}
	}
	d2 = sqrtf(d2);
	if (v == 0) {
		d2 = -d2;
	}
	d2 *= 127.5 / max_radius;
	d2 += 127.5;
	if (d2 < 0.0) d2 = 0.0;
	if (d2 > 255.0) d2 = 255.0;
	return (unsigned char)(d2 + 0.5);
}

Ref<BitmapFont> EditorFontImportPlugin::generate_font(const Ref<ResourceImportMetadata> &p_from, const String &p_existing) {

	Ref<ResourceImportMetadata> from = p_from;
	ERR_FAIL_COND_V(from->get_source_count() != 1, Ref<BitmapFont>());

	String src_path = EditorImportPlugin::expand_source_path(from->get_source_path(0));

	if (src_path.extension().to_lower() == "fnt") {

		if (ResourceLoader::load(src_path).is_valid()) {
			EditorNode::get_singleton()->show_warning(TTR("Path:") + " " + src_path + "\n" + TTR("This file is already a Godot font file, please supply a BMFont type file instead."));
			return Ref<BitmapFont>();
		}

		Ref<BitmapFont> font;
		font.instance();
		Error err = font->create_from_fnt(src_path);
		if (err) {
			EditorNode::get_singleton()->show_warning(TTR("Path:") + " " + src_path + "\n" + TTR("Failed opening as BMFont file."));
			return Ref<BitmapFont>();
		}

		return font;
	}

	int size = from->get_option("font/size");

#ifdef FREETYPE_ENABLED
	FT_Library library; /* handle to library     */
	FT_Face face; /* handle to face object */

	Vector<_EditorFontData *> font_data_list;

	int error = FT_Init_FreeType(&library);

	ERR_EXPLAIN(TTR("Error initializing FreeType."));
	ERR_FAIL_COND_V(error != 0, Ref<BitmapFont>());

	print_line("loadfrom: " + src_path);
	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, Ref<BitmapFont>());

	int height = 0;
	int ascent = 0;
	int font_spacing = 0;

	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, Ref<BitmapFont>());
	}

	int font_mode = from->get_option("mode/mode");

	int scaler = (font_mode == _EditorFontImportOptions::FONT_DISTANCE_FIELD) ? 16 : 1;

	error = FT_Set_Pixel_Sizes(face, 0, size * scaler);

	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<_EditorKerningKey, int> kerning_map;

	charcode = FT_Get_First_Char(face, &gindex);

	Set<CharType> import_chars;

	int import_mode = from->get_option("character_set/mode");
	bool round_advance = from->get_option("advanced/round_advance");

	if (import_mode >= _EditorFontImportOptions::CHARSET_CUSTOM) {

		//load from custom text
		String path = from->get_option("character_set/custom");

		FileAccess *fa = FileAccess::open(EditorImportPlugin::expand_source_path(path), FileAccess::READ);

		if (!fa) {

			FT_Done_FreeType(library);
			ERR_EXPLAIN(TTR("Invalid font custom source."));
			ERR_FAIL_COND_V(!fa, Ref<BitmapFont>());
		}

		while (!fa->eof_reached()) {

			String line = fa->get_line();
			for (int i = 0; i < line.length(); i++) {
				import_chars.insert(line[i]);
			}
		}

		if (import_mode == _EditorFontImportOptions::CHARSET_CUSTOM_LATIN) {

			for (int i = 32; i < 128; i++)
				import_chars.insert(i);
		}

		memdelete(fa);
	}

	int xsize = 0;
	while (gindex != 0) {

		bool skip = false;
		error = FT_Load_Char(face, charcode, font_mode == _EditorFontImportOptions::FONT_BITMAP ? FT_LOAD_RENDER : FT_LOAD_MONOCHROME);
		if (error)
			skip = true;
		else
			error = FT_Render_Glyph(face->glyph, font_mode == _EditorFontImportOptions::FONT_BITMAP ? ft_render_mode_normal : ft_render_mode_mono);
		if (error) {
			skip = true;
		} else if (!skip) {

			switch (import_mode) {

				case _EditorFontImportOptions::CHARSET_ASCII: skip = charcode > 127; break;
				case _EditorFontImportOptions::CHARSET_LATIN: skip = charcode > 255; break;
				case _EditorFontImportOptions::CHARSET_UNICODE:
					break; //none
				case _EditorFontImportOptions::CHARSET_CUSTOM:
				case _EditorFontImportOptions::CHARSET_CUSTOM_LATIN: skip = !import_chars.has(charcode); break;
			}
		}

		if (charcode <= 32) //??
			skip = true;

		if (skip) {
			charcode = FT_Get_Next_Char(face, charcode, &gindex);
			continue;
		}

		_EditorFontData *fdata = memnew(_EditorFontData);

		int w = slot->bitmap.width;
		int h = slot->bitmap.rows;
		int p = slot->bitmap.pitch;

		//print_line("W: "+itos(w)+" P: "+itos(slot->bitmap.pitch));

		if (font_mode == _EditorFontImportOptions::FONT_DISTANCE_FIELD) {

			//	oversize the holding buffer so I can smooth it!
			int sw = w + scaler * 4;
			int sh = h + scaler * 4;
			//	do the SDF
			int sdfw = sw / scaler;
			int sdfh = sh / scaler;

			fdata->width = sdfw;
			fdata->height = sdfh;
		} else {
			fdata->width = w;
			fdata->height = h;
		}

		fdata->character = charcode;
		fdata->glyph = FT_Get_Char_Index(face, charcode);
		if (charcode == 'x')
			xsize = w / scaler;

		fdata->valign = slot->bitmap_top;
		fdata->halign = slot->bitmap_left;

		if (round_advance)
			fdata->advance = (slot->advance.x + (1 << 5)) >> 6;
		else
			fdata->advance = slot->advance.x / float(1 << 6);

		if (font_mode == _EditorFontImportOptions::FONT_DISTANCE_FIELD) {

			fdata->halign = fdata->halign / scaler - 1.5;
			fdata->valign = fdata->valign / scaler + 1.5;
			fdata->advance /= scaler;
		}

		fdata->advance += font_spacing;

		if (charcode < 127) {
			int top = fdata->valign;
			int hmax = h / scaler;

			if (top > max_up) {

				max_up = top;
			}

			if ((top - hmax) < max_down) {

				max_down = top - hmax;
			}
		}

		if (font_mode == _EditorFontImportOptions::FONT_DISTANCE_FIELD) {

			//	oversize the holding buffer so I can smooth it!
			int sw = w + scaler * 4;
			int sh = h + scaler * 4;

			unsigned char *smooth_buf = new unsigned char[sw * sh];

			for (int i = 0; i < sw * sh; ++i) {
				smooth_buf[i] = 0;
			}

			// copy the glyph into the buffer to be smoothed
			unsigned char *buf = slot->bitmap.buffer;
			for (int j = 0; j < h; ++j) {
				for (int i = 0; i < w; ++i) {
					smooth_buf[scaler * 2 + i + (j + scaler * 2) * sw] = 255 * ((buf[j * p + (i >> 3)] >> (7 - (i & 7))) & 1);
				}
			}

			// do the SDF
			int sdfw = fdata->width;
			int sdfh = fdata->height;

			fdata->bitmap.resize(sdfw * sdfh);

			for (int j = 0; j < sdfh; ++j) {
				for (int i = 0; i < sdfw; ++i) {
					int pd_idx = j * sdfw + i;

					//fdata->bitmap[j*slot->bitmap.width+i]=slot->bitmap.buffer[j*slot->bitmap.width+i];

					fdata->bitmap[pd_idx] =
							//get_SDF
							get_SDF_radial(smooth_buf, sw, sh,
									i * scaler + (scaler >> 1), j * scaler + (scaler >> 1),
									2 * scaler);
				}
			}

			delete[] smooth_buf;

		} else {
			fdata->bitmap.resize(slot->bitmap.width * slot->bitmap.rows);
			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 */

	_EditorFontData *spd = memnew(_EditorFontData);
	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, font_mode == _EditorFontImportOptions::FONT_BITMAP ? ft_render_mode_normal : ft_render_mode_mono)) {

		spd->advance = slot->advance.x >> 6; //round to nearest or store as float
		spd->advance /= scaler;
		spd->advance += font_spacing;
	} else {

		spd->advance = xsize;
		spd->advance += font_spacing;
	}

	font_data_list.push_back(spd);

	Set<CharType> exported;
	for (int i = 0; i < font_data_list.size(); i++) {
		exported.insert(font_data_list[i]->character);
	};
	int missing = 0;
	for (Set<CharType>::Element *E = import_chars.front(); E; E = E->next()) {
		CharType c = E->get();
		if (!exported.has(c)) {
			CharType str[2] = { c, 0 };
			printf("** Warning: character %i (%ls) not exported\n", (int)c, str);
			++missing;
		};
	};
	print_line("total_chars: " + itos(font_data_list.size()));

	/* KERNING */

	for (int i = 0; i < font_data_list.size(); i++) {

		if (font_data_list[i]->character > 512)
			continue;
		for (int j = 0; j < font_data_list.size(); j++) {

			if (font_data_list[j]->character > 512)
				continue;

			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) {

				_EditorKerningKey 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 / scaler;
			}
		}
	}

	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 */
	/*
	_EditorFontData * fdata = new _EditorFontData;

	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<_EditorFontDataSort>();
	Color *color = memnew_arr(Color, height);

	int gradient_type = from->get_option("color/mode");
	switch (gradient_type) {
		case _EditorFontImportOptions::COLOR_WHITE: {

			for (int i = 0; i < height; i++) {
				color[i] = Color(1, 1, 1, 1);
			}

		} break;
		case _EditorFontImportOptions::COLOR_CUSTOM: {

			Color cc = from->get_option("color/color");
			for (int i = 0; i < height; i++) {
				color[i] = cc;
			}

		} break;
		case _EditorFontImportOptions::COLOR_GRADIENT_RANGE: {

			Color src = from->get_option("color/begin");
			Color to = from->get_option("color/end");
			for (int i = 0; i < height; i++) {
				color[i] = src.linear_interpolate(to, i / float(height));
			}

		} break;
		case _EditorFontImportOptions::COLOR_GRADIENT_IMAGE: {

			String fp = EditorImportPlugin::expand_source_path(from->get_option("color/image"));
			Image img;
			Error err = ImageLoader::load_image(fp, &img);
			if (err == OK) {

				for (int i = 0; i < height; i++) {
					color[i] = img.get_pixel(0, i * img.get_height() / height);
				}
			} else {

				for (int i = 0; i < height; i++) {
					color[i] = Color(1, 1, 1, 1);
				}
			}

		} break;
	}

	for (int i = 0; i < font_data_list.size(); i++) {

		if (font_data_list[i]->bitmap.size() == 0)
			continue;

		int margin[4] = { 0, 0, 0, 0 };

		if (from->get_option("shadow/enabled").operator bool()) {
			int r = from->get_option("shadow/radius");
			Point2i ofs = Point2(from->get_option("shadow/offset"));
			margin[MARGIN_LEFT] = MAX(r - ofs.x, 0);
			margin[MARGIN_RIGHT] = MAX(r + ofs.x, 0);
			margin[MARGIN_TOP] = MAX(r - ofs.y, 0);
			margin[MARGIN_BOTTOM] = MAX(r + ofs.y, 0);
		}

		if (from->get_option("shadow2/enabled").operator bool()) {
			int r = from->get_option("shadow2/radius");
			Point2i ofs = Point2(from->get_option("shadow2/offset"));
			margin[MARGIN_LEFT] = MAX(r - ofs.x, margin[MARGIN_LEFT]);
			margin[MARGIN_RIGHT] = MAX(r + ofs.x, margin[MARGIN_RIGHT]);
			margin[MARGIN_TOP] = MAX(r - ofs.y, margin[MARGIN_TOP]);
			margin[MARGIN_BOTTOM] = MAX(r + ofs.y, margin[MARGIN_BOTTOM]);
		}

		Size2i s;
		s.width = font_data_list[i]->width + margin[MARGIN_LEFT] + margin[MARGIN_RIGHT];
		s.height = font_data_list[i]->height + margin[MARGIN_TOP] + margin[MARGIN_BOTTOM];
		Point2i o;
		o.x = margin[MARGIN_LEFT];
		o.y = margin[MARGIN_TOP];

		int ow = font_data_list[i]->width;
		int oh = font_data_list[i]->height;

		DVector<uint8_t> pixels;
		pixels.resize(s.x * s.y * 4);

		DVector<uint8_t>::Write w = pixels.write();
		//print_line("val: "+itos(font_data_list[i]->valign));
		for (int y = 0; y < s.height; y++) {

			int yc = CLAMP(y - o.y + font_data_list[i]->valign, 0, height - 1);
			Color c = color[yc];
			c.a = 0;

			for (int x = 0; x < s.width; x++) {

				int ofs = y * s.x + x;
				w[ofs * 4 + 0] = c.r * 255.0;
				w[ofs * 4 + 1] = c.g * 255.0;
				w[ofs * 4 + 2] = c.b * 255.0;
				w[ofs * 4 + 3] = c.a * 255.0;
			}
		}

		for (int si = 0; si < 2; si++) {

#define S_VAR(m_v) (String(si == 0 ? "shadow/" : "shadow2/") + m_v)
			if (from->get_option(S_VAR("enabled")).operator bool()) {
				int r = from->get_option(S_VAR("radius"));

				Color sc = from->get_option(S_VAR("color"));
				Point2i so = Point2(from->get_option(S_VAR("offset")));

				float tr = from->get_option(S_VAR("transition"));
				print_line("shadow enabled: " + itos(si));

				Vector<uint8_t> s2buf;
				s2buf.resize(s.x * s.y);
				uint8_t *wa = s2buf.ptr();

				for (int j = 0; j < s.x * s.y; j++) {

					wa[j] = 0;
				}

				// blit shadowa
				for (int x = 0; x < ow; x++) {
					for (int y = 0; y < oh; y++) {
						int ofs = (o.y + y + so.y) * s.x + x + o.x + so.x;
						wa[ofs] = font_data_list[i]->bitmap[y * ow + x];
					}
				}
				//blur shadow2 with separatable convolution

				if (r > 0) {

					Vector<uint8_t> pixels2;
					pixels2.resize(s2buf.size());
					uint8_t *w2 = pixels2.ptr();
					//vert
					for (int x = 0; x < s.width; x++) {
						for (int y = 0; y < s.height; y++) {

							int ofs = y * s.width + x;
							int sum = wa[ofs];

							for (int k = 1; k <= r; k++) {

								int ofs_d = MIN(y + k, s.height - 1) * s.width + x;
								int ofs_u = MAX(y - k, 0) * s.width + x;
								sum += wa[ofs_d];
								sum += wa[ofs_u];
							}

							w2[ofs] = sum / (r * 2 + 1);
						}
					}
					//horiz
					for (int x = 0; x < s.width; x++) {
						for (int y = 0; y < s.height; y++) {

							int ofs = y * s.width + x;
							int sum = w2[ofs];

							for (int k = 1; k <= r; k++) {

								int ofs_r = MIN(x + k, s.width - 1) + s.width * y;
								int ofs_l = MAX(x - k, 0) + s.width * y;
								sum += w2[ofs_r];
								sum += w2[ofs_l];
							}

							wa[ofs] = Math::pow(float(sum / (r * 2 + 1)) / 255.0, tr) * 255.0;
						}
					}
				}

				//blend back

				for (int j = 0; j < s.x * s.y; j++) {
					Color wd(w[j * 4 + 0] / 255.0, w[j * 4 + 1] / 255.0, w[j * 4 + 2] / 255.0, w[j * 4 + 3] / 255.0);
					Color ws(sc.r, sc.g, sc.b, sc.a * (wa[j] / 255.0));
					Color b = wd.blend(ws);

					w[j * 4 + 0] = b.r * 255.0;
					w[j * 4 + 1] = b.g * 255.0;
					w[j * 4 + 2] = b.b * 255.0;
					w[j * 4 + 3] = b.a * 255.0;
				}
			}
		}

		for (int y = 0; y < oh; y++) {
			int yc = CLAMP(y + font_data_list[i]->valign, 0, height - 1);
			Color sc = color[yc];
			for (int x = 0; x < ow; x++) {
				int ofs = (o.y + y) * s.x + x + o.x;
				float c = font_data_list[i]->bitmap[y * ow + x] / 255.0;
				Color src_col = sc;
				src_col.a *= c;
				Color dst_col(w[ofs * 4 + 0] / 255.0, w[ofs * 4 + 1] / 255.0, w[ofs * 4 + 2] / 255.0, w[ofs * 4 + 3] / 255.0);
				dst_col = dst_col.blend(src_col);
				w[ofs * 4 + 0] = dst_col.r * 255.0;
				w[ofs * 4 + 1] = dst_col.g * 255.0;
				w[ofs * 4 + 2] = dst_col.b * 255.0;
				w[ofs * 4 + 3] = dst_col.a * 255.0;
			}
		}

		w = DVector<uint8_t>::Write();

		Image img(s.width, s.height, 0, Image::FORMAT_RGBA, pixels);

		font_data_list[i]->blit = img;
		font_data_list[i]->blit_ofs = o;
	}

	//make atlas
	int spacing = 2;
	Vector<Size2i> sizes;
	sizes.resize(font_data_list.size());
	for (int i = 0; i < font_data_list.size(); i++) {

		sizes[i] = Size2(font_data_list[i]->blit.get_width() + spacing * 2, font_data_list[i]->blit.get_height() + spacing * 2);
	}
	Vector<Point2i> res;
	Size2i res_size;
	EditorAtlas::fit(sizes, res, res_size);
	res_size.x = next_power_of_2(res_size.x);
	res_size.y = next_power_of_2(res_size.y);
	print_line("Atlas size: " + res_size);

	Image atlas(res_size.x, res_size.y, 0, Image::FORMAT_RGBA);

	for (int i = 0; i < font_data_list.size(); i++) {

		if (font_data_list[i]->bitmap.size() == 0)
			continue;
		atlas.blit_rect(font_data_list[i]->blit, Rect2(0, 0, font_data_list[i]->blit.get_width(), font_data_list[i]->blit.get_height()), res[i] + Size2(spacing, spacing));
		font_data_list[i]->ofs_x = res[i].x + spacing;
		font_data_list[i]->ofs_y = res[i].y + spacing;
	}

	if (from->has_option("advanced/premultiply_alpha") && bool(from->get_option("advanced/premultiply_alpha"))) {

		DVector<uint8_t> data = atlas.get_data();
		int dl = data.size();
		{
			DVector<uint8_t>::Write w = data.write();

			for (int i = 0; i < dl; i += 4) {

				w[i + 0] = uint8_t(int(w[i + 0]) * int(w[i + 3]) / 255);
				w[i + 1] = uint8_t(int(w[i + 1]) * int(w[i + 3]) / 255);
				w[i + 2] = uint8_t(int(w[i + 2]) * int(w[i + 3]) / 255);
			}
		}

		atlas = Image(res_size.x, res_size.y, 0, Image::FORMAT_RGBA, data);
	}

	if (from->has_option("color/monochrome") && bool(from->get_option("color/monochrome"))) {

		atlas.convert(Image::FORMAT_GRAYSCALE_ALPHA);
	}

	if (0) {
		//debug the texture
		Ref<ImageTexture> atlast = memnew(ImageTexture);
		atlast->create_from_image(atlas);
		//		atlast->create_from_image(font_data_list[5]->blit);
		TextureFrame *tf = memnew(TextureFrame);
		tf->set_texture(atlast);
		dialog->add_child(tf);
	}

	/* CREATE FONT */

	int char_space = from->get_option("extra_space/char");
	int space_space = from->get_option("extra_space/space");
	int top_space = from->get_option("extra_space/top");
	int bottom_space = from->get_option("extra_space/bottom");
	bool disable_filter = from->get_option("advanced/disable_filter");

	Ref<BitmapFont> font;

	if (p_existing != String() && ResourceCache::has(p_existing)) {

		font = Ref<BitmapFont>(ResourceCache::get(p_existing)->cast_to<BitmapFont>());
	}

	if (font.is_null()) {
		font = Ref<BitmapFont>(memnew(BitmapFont));
	}

	font->clear();
	font->set_height(height + bottom_space + top_space);
	font->set_ascent(ascent + top_space);
	font->set_distance_field_hint(font_mode == _EditorFontImportOptions::FONT_DISTANCE_FIELD);

	//register textures
	{
		Ref<ImageTexture> t = memnew(ImageTexture);
		int flags;
		if (disable_filter)
			flags = 0;
		else
			flags = Texture::FLAG_FILTER;
		t->create_from_image(atlas, flags);
		t->set_storage(ImageTexture::STORAGE_COMPRESS_LOSSLESS);
		font->add_texture(t);
	}
	//register characters

	for (int i = 0; i < font_data_list.size(); i++) {
		_EditorFontData *fd = font_data_list[i];
		int tex_idx = 0;

		font->add_char(fd->character, tex_idx, Rect2(fd->ofs_x, fd->ofs_y, fd->blit.get_width(), fd->blit.get_height()), Point2(fd->halign - fd->blit_ofs.x, fd->valign - fd->blit_ofs.y + top_space), fd->advance + char_space + (fd->character == ' ' ? space_space : 0));
		memdelete(fd);
	}

	for (Map<_EditorKerningKey, 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);

	return font;
#else

	return Ref<BitmapFont>();
#endif
}

String EditorFontImportPlugin::get_name() const {

	return "font";
}
String EditorFontImportPlugin::get_visible_name() const {

	return TTR("Font");
}
void EditorFontImportPlugin::import_dialog(const String &p_from) {

	dialog->popup_import(p_from);
}
Error EditorFontImportPlugin::import(const String &p_path, const Ref<ResourceImportMetadata> &p_from) {

	Ref<BitmapFont> font = EditorFontImportPlugin::generate_font(p_from, p_path);
	if (!font.is_valid())
		return ERR_CANT_CREATE;

	Ref<ResourceImportMetadata> from = p_from;
	from->set_source_md5(0, FileAccess::get_md5(EditorImportPlugin::expand_source_path(from->get_source_path(0))));
	from->set_editor(get_name());
	font->set_import_metadata(from);

	return ResourceSaver::save(p_path, font);
}

void EditorFontImportPlugin::import_from_drop(const Vector<String> &p_drop, const String &p_dest_path) {

	for (int i = 0; i < p_drop.size(); i++) {
		String ext = p_drop[i].extension().to_lower();
		String file = p_drop[i].get_file();
		if (ext == "ttf" || ext == "otf" || ext == "fnt") {

			import_dialog();
			dialog->set_source_and_dest(p_drop[i], p_dest_path.plus_file(file.basename() + ".fnt"));
			break;
		}
	}
}

EditorFontImportPlugin::EditorFontImportPlugin(EditorNode *p_editor) {

	dialog = memnew(EditorFontImportDialog(this));
	p_editor->get_gui_base()->add_child(dialog);
}