/*************************************************************************/
/*  text_paragraph.h                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef TEXT_PARAGRAPH_H
#define TEXT_PARAGRAPH_H

#include "scene/resources/font.h"
#include "servers/text_server.h"

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

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

	RID dropcap_rid;
	int dropcap_lines = 0;
	Rect2 dropcap_margins;

	RID rid;
	Vector<RID> lines;
	int spacing_top = 0;
	int spacing_bottom = 0;

	bool dirty_lines = true;

	float width = -1.0;
	uint8_t flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND | TextServer::JUSTIFICATION_WORD_BOUND | TextServer::JUSTIFICATION_KASHIDA;
	HAlign align = HALIGN_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 Vector<Vector2i> &p_override);

	bool set_dropcap(const String &p_text, const Ref<Font> &p_fonts, int p_size, const Rect2 &p_dropcap_margins = Rect2(), const Dictionary &p_opentype_features = Dictionary(), const String &p_language = "");
	void clear_dropcap();

	bool add_string(const String &p_text, const Ref<Font> &p_fonts, int p_size, const Dictionary &p_opentype_features = Dictionary(), const String &p_language = "");
	bool add_object(Variant p_key, const Size2 &p_size, InlineAlign p_inline_align = INLINE_ALIGN_CENTER, int p_length = 1);
	bool resize_object(Variant p_key, const Size2 &p_size, InlineAlign p_inline_align = INLINE_ALIGN_CENTER);

	void set_align(HAlign p_align);
	HAlign get_align() const;

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

	void set_flags(uint8_t p_flags);
	uint8_t get_flags() const;

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

	Size2 get_non_wraped_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;

	void _set_bidi_override(const Array &p_override);

	TextParagraph(const String &p_text, const Ref<Font> &p_fonts, int p_size, const Dictionary &p_opentype_features = Dictionary(), 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