/*************************************************************************/
/*  editor_fonts.cpp                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
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/* "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 */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/*************************************************************************/
#include "editor_fonts.h"

#include "builtin_fonts.gen.h"
#include "doc_code_font.h"
#include "doc_font.h"
#include "doc_title_font.h"
#include "editor_scale.h"
#include "editor_settings.h"
#include "scene/resources/default_theme/default_theme.h"
#include "scene/resources/dynamic_font.h"

static Ref<BitmapFont> make_font(int p_height, int p_ascent, int p_valign, int p_charcount, const int *p_chars, const Ref<Texture> &p_texture) {

	Ref<BitmapFont> font(memnew(BitmapFont));
	font->add_texture(p_texture);

	for (int i = 0; i < p_charcount; i++) {

		const int *c = &p_chars[i * 8];

		int chr = c[0];
		Rect2 frect;
		frect.position.x = c[1];
		frect.position.y = c[2];
		frect.size.x = c[3];
		frect.size.y = c[4];
		Point2 align(c[5], c[6] + p_valign);
		int advance = c[7];

		font->add_char(chr, 0, frect, align, advance);
	}

	font->set_height(p_height);
	font->set_ascent(p_ascent);

	return font;
}

#define MAKE_FALLBACKS(m_name)          \
	m_name->add_fallback(FontArabic);   \
	m_name->add_fallback(FontHebrew);   \
	m_name->add_fallback(FontThai);     \
	m_name->add_fallback(FontJapanese); \
	m_name->add_fallback(FontFallback);

// the custom spacings might only work with Noto Sans
#define MAKE_DEFAULT_FONT(m_name, m_size)                 \
	Ref<DynamicFont> m_name;                              \
	m_name.instance();                                    \
	m_name->set_size(m_size);                             \
	m_name->set_font_data(DefaultFont);                   \
	m_name->set_spacing(DynamicFont::SPACING_TOP, -1);    \
	m_name->set_spacing(DynamicFont::SPACING_BOTTOM, -1); \
	MAKE_FALLBACKS(m_name);

void editor_register_fonts(Ref<Theme> p_theme) {
	/* Droid Sans */

	Ref<DynamicFontData> DefaultFont;
	DefaultFont.instance();
	DefaultFont->set_font_ptr(_font_NotoSansUI_Regular, _font_NotoSansUI_Regular_size);
	DefaultFont->set_force_autohinter(true); //just looks better..i think?

	Ref<DynamicFontData> FontFallback;
	FontFallback.instance();
	FontFallback->set_font_ptr(_font_DroidSansFallback, _font_DroidSansFallback_size);
	FontFallback->set_force_autohinter(true); //just looks better..i think?

	Ref<DynamicFontData> FontJapanese;
	FontJapanese.instance();
	FontJapanese->set_font_ptr(_font_DroidSansJapanese, _font_DroidSansJapanese_size);
	FontJapanese->set_force_autohinter(true); //just looks better..i think?

	Ref<DynamicFontData> FontArabic;
	FontArabic.instance();
	FontArabic->set_font_ptr(_font_NotoNaskhArabicUI_Regular, _font_NotoNaskhArabicUI_Regular_size);
	FontArabic->set_force_autohinter(true); //just looks better..i think?

	Ref<DynamicFontData> FontHebrew;
	FontHebrew.instance();
	FontHebrew->set_font_ptr(_font_NotoSansHebrew_Regular, _font_NotoSansHebrew_Regular_size);
	FontHebrew->set_force_autohinter(true); //just looks better..i think?

	Ref<DynamicFontData> FontThai;
	FontThai.instance();
	FontThai->set_font_ptr(_font_NotoSansThaiUI_Regular, _font_NotoSansThaiUI_Regular_size);
	FontThai->set_force_autohinter(true); //just looks better..i think?

	/* Source Code Pro */

	Ref<DynamicFontData> dfmono;
	dfmono.instance();
	dfmono->set_font_ptr(_font_source_code_pro, _font_source_code_pro_size);
	//dfd->set_force_autohinter(true); //just looks better..i think?

	MAKE_DEFAULT_FONT(df, int(EditorSettings::get_singleton()->get("interface/font_size")) * EDSCALE);

	p_theme->set_default_theme_font(df);

	//Ref<BitmapFont> doc_font = make_font(_bi_font_doc_font_height,_bi_font_doc_font_ascent,0,_bi_font_doc_font_charcount,_bi_font_doc_font_characters,p_theme->get_icon("DocFont","EditorIcons"));
	//Ref<BitmapFont> doc_title_font = make_font(_bi_font_doc_title_font_height,_bi_font_doc_title_font_ascent,0,_bi_font_doc_title_font_charcount,_bi_font_doc_title_font_characters,p_theme->get_icon("DocTitleFont","EditorIcons"));
	//Ref<BitmapFont> doc_code_font = make_font(_bi_font_doc_code_font_height,_bi_font_doc_code_font_ascent,0,_bi_font_doc_code_font_charcount,_bi_font_doc_code_font_characters,p_theme->get_icon("DocCodeFont","EditorIcons"));

	MAKE_DEFAULT_FONT(df_title, int(EDITOR_DEF("text_editor/help/help_title_font_size", 18)) * EDSCALE);

	MAKE_DEFAULT_FONT(df_doc, int(EDITOR_DEF("text_editor/help/help_font_size", 16)) * EDSCALE);

	p_theme->set_font("doc", "EditorFonts", df_doc);
	p_theme->set_font("doc_title", "EditorFonts", df_title);

	Ref<DynamicFont> df_code;
	df_code.instance();
	df_code->set_size(int(EditorSettings::get_singleton()->get("interface/source_font_size")) * EDSCALE);
	df_code->set_font_data(dfmono);
	MAKE_FALLBACKS(df_code);

	p_theme->set_font("source", "EditorFonts", df_code);

	Ref<DynamicFont> df_doc_code;
	df_doc_code.instance();
	df_doc_code->set_size(int(EDITOR_DEF("text_editor/help/help_source_font_size", 14)) * EDSCALE);
	df_doc_code->set_font_data(dfmono);
	MAKE_FALLBACKS(df_doc_code);

	p_theme->set_font("doc_source", "EditorFonts", df_doc_code);

	//replace default theme
	Ref<Texture> di;
	Ref<StyleBox> ds;
	fill_default_theme(p_theme, df, df_doc, di, ds, EDSCALE);
}