godot/scene/gui/label.h

/*************************************************************************/
/*  label.h                                                              */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
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/* Copyright (c) 2007-2015 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    */
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/* 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.       */
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/* 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.*/
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/*************************************************************************/
#ifndef LABEL_H
#define LABEL_H

#include "scene/gui/range.h"
/**
	@author Juan Linietsky <reduzio@gmail.com>
*/
class Label : public Range {
	
	OBJ_TYPE( Label, Range );	
public:	
	
	enum Align {
		
		ALIGN_LEFT,
		ALIGN_CENTER,
		ALIGN_RIGHT,
		ALIGN_FILL
	};

	enum VAlign {

		VALIGN_TOP,
		VALIGN_CENTER,
		VALIGN_BOTTOM,
		VALIGN_FILL
	};

private:
	Align align;
	VAlign valign;
	String text;
	bool autowrap;
	bool clip;
	Size2 minsize;
	int line_count;
	bool uppercase;
	
	int get_longest_line_width() const;
	
	struct WordCache {
		
		enum {
			CHAR_NEWLINE=-1,
			CHAR_WRAPLINE=-2
		};
		int char_pos; // if -1, then newline
		int word_len;
		int pixel_width;
		WordCache *next;
		WordCache() { char_pos=0; word_len=0; pixel_width=0; next=0; }
	};	
	
	bool word_cache_dirty;
	void regenerate_word_cache();

	float percent_visible;
	
	WordCache *word_cache;
	int total_char_cache;
	int visible_chars;
protected:		
	void _notification(int p_what);

	static void _bind_methods();
	// bind helpers
public:
	
	virtual Size2 get_minimum_size() const;

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

	void set_valign(VAlign p_align);
	VAlign get_valign() const;

	void set_text(const String& p_string);
	String get_text() const;
	
	void set_autowrap(bool p_autowrap);
	bool has_autowrap() const;

	void set_uppercase(bool p_uppercase);
	bool is_uppercase() const;

	void set_visible_characters(int p_amount);
	int get_total_character_count() const;

	void set_clip_text(bool p_clip);
	bool is_clipping_text() const;

	void set_percent_visible(float p_percent);
	float get_percent_visible() const;


	int get_line_height() const;
	int get_line_count() const;

	Label(const String& p_text=String());
	~Label();

};


VARIANT_ENUM_CAST( Label::Align );
VARIANT_ENUM_CAST( Label::VAlign );

#endif