/**************************************************************************/
/*  text_paragraph.h                                                      */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* 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:                                              */
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/* 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     */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
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/**************************************************************************/

#ifndef TEXT_PARAGRAPH_H
#define TEXT_PARAGRAPH_H

#include "core/templates/local_vector.h"
#include "scene/resources/font.h"
#include "servers/text_server.h"

/*************************************************************************/

class TextParagraph : public RefCounted {
	GDCLASS(TextParagraph, RefCounted);
	_THREAD_SAFE_CLASS_

private:
	RID dropcap_rid;
	int dropcap_lines = 0;
	Rect2 dropcap_margins;

	RID rid;
	LocalVector<RID> lines_rid;

	bool lines_dirty = true;

	float width = -1.0;
	int max_lines_visible = -1;

	BitField<TextServer::LineBreakFlag> brk_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND;
	BitField<TextServer::JustificationFlag> jst_flags = TextServer::JUSTIFICATION_WORD_BOUND | TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_SKIP_LAST_LINE | TextServer::JUSTIFICATION_DO_NOT_SKIP_SINGLE_LINE;
	String el_char = U"…";
	TextServer::OverrunBehavior overrun_behavior = TextServer::OVERRUN_NO_TRIMMING;

	HorizontalAlignment alignment = HORIZONTAL_ALIGNMENT_LEFT;

	Vector<float> tab_stops;

protected:
	static void _bind_methods();

	void _shape_lines();

public:
	RID get_rid() const;
	RID get_line_rid(int p_line) const;
	RID get_dropcap_rid() const;

	void clear();

	void set_direction(TextServer::Direction p_direction);
	TextServer::Direction get_direction() const;

	void set_orientation(TextServer::Orientation p_orientation);
	TextServer::Orientation get_orientation() const;

	void set_preserve_invalid(bool p_enabled);
	bool get_preserve_invalid() const;

	void set_preserve_control(bool p_enabled);
	bool get_preserve_control() const;

	void set_bidi_override(const Array &p_override);

	void set_custom_punctuation(const String &p_punct);
	String get_custom_punctuation() const;

	bool set_dropcap(const String &p_text, const Ref<Font> &p_font, int p_font_size, const Rect2 &p_dropcap_margins = Rect2(), const String &p_language = "");
	void clear_dropcap();

	bool add_string(const String &p_text, const Ref<Font> &p_font, int p_font_size, const String &p_language = "", const Variant &p_meta = Variant());
	bool add_object(Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, int p_length = 1, float p_baseline = 0.0);
	bool resize_object(Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, float p_baseline = 0.0);

	void set_alignment(HorizontalAlignment p_alignment);
	HorizontalAlignment get_alignment() const;

	void tab_align(const Vector<float> &p_tab_stops);

	void set_justification_flags(BitField<TextServer::JustificationFlag> p_flags);
	BitField<TextServer::JustificationFlag> get_justification_flags() const;

	void set_break_flags(BitField<TextServer::LineBreakFlag> p_flags);
	BitField<TextServer::LineBreakFlag> get_break_flags() const;

	void set_text_overrun_behavior(TextServer::OverrunBehavior p_behavior);
	TextServer::OverrunBehavior get_text_overrun_behavior() const;

	void set_ellipsis_char(const String &p_char);
	String get_ellipsis_char() const;

	void set_width(float p_width);
	float get_width() const;

	void set_max_lines_visible(int p_lines);
	int get_max_lines_visible() const;

	Size2 get_non_wrapped_size() const;

	Size2 get_size() const;

	int get_line_count() const;

	Array get_line_objects(int p_line) const;
	Rect2 get_line_object_rect(int p_line, Variant p_key) const;
	Size2 get_line_size(int p_line) const;
	float get_line_ascent(int p_line) const;
	float get_line_descent(int p_line) const;
	float get_line_width(int p_line) const;
	Vector2i get_line_range(int p_line) const;
	float get_line_underline_position(int p_line) const;
	float get_line_underline_thickness(int p_line) const;

	int get_spacing_top() const;
	int get_spacing_bottom() const;

	Size2 get_dropcap_size() const;
	int get_dropcap_lines() const;

	void draw(RID p_canvas, const Vector2 &p_pos, const Color &p_color = Color(1, 1, 1), const Color &p_dc_color = Color(1, 1, 1)) const;
	void draw_outline(RID p_canvas, const Vector2 &p_pos, int p_outline_size = 1, const Color &p_color = Color(1, 1, 1), const Color &p_dc_color = Color(1, 1, 1)) const;

	void draw_line(RID p_canvas, const Vector2 &p_pos, int p_line, const Color &p_color = Color(1, 1, 1)) const;
	void draw_line_outline(RID p_canvas, const Vector2 &p_pos, int p_line, int p_outline_size = 1, const Color &p_color = Color(1, 1, 1)) const;

	void draw_dropcap(RID p_canvas, const Vector2 &p_pos, const Color &p_color = Color(1, 1, 1)) const;
	void draw_dropcap_outline(RID p_canvas, const Vector2 &p_pos, int p_outline_size = 1, const Color &p_color = Color(1, 1, 1)) const;

	int hit_test(const Point2 &p_coords) const;

	Mutex &get_mutex() const { return _thread_safe_; };

	TextParagraph(const String &p_text, const Ref<Font> &p_font, int p_font_size, const String &p_language = "", float p_width = -1.f, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL);
	TextParagraph();
	~TextParagraph();
};

#endif // TEXT_PARAGRAPH_H