/*
 * This software is licensed under the terms of the MIT-License
 * See COPYING for further information.
 * ---
 * Copyright (c) 2011-2017, Lukas Weber <laochailan@web.de>.
 * Copyright (c) 2012-2017, Andrei Alexeyev <akari@alienslab.net>.
 */

#pragma once

#include <SDL_ttf.h>

#include "texture.h"
#include "hashtable.h"

typedef enum {
	AL_Center,
	AL_Left,
	AL_Right
} Alignment;

enum {
	AL_Flag_NoAdjust = 0x10,
};

// Size of the buffer used by the font renderer at quality == 1.0.
// No text larger than this can be drawn.
enum {
	FONTREN_MAXW = 1024,	// must be a power of two that is >= SCREEN_W
	FONTREN_MAXH = 64,		// must be a power of two that is > largest font size
};

typedef struct Font Font;

typedef struct FontRenderer {
	Texture tex;
	GLuint pbo;
	float quality;
} FontRenderer;

void fontrenderer_init(FontRenderer *f, float quality);
void fontrenderer_free(FontRenderer *f);
void fontrenderer_draw(FontRenderer *f, const char *text, Font *font);
void fontrenderer_draw_prerendered(FontRenderer *f, SDL_Surface *surf);
SDL_Surface* fontrender_render(FontRenderer *f, const char *text, Font *font);

Texture *load_text(const char *text, Font *font);
void draw_text(Alignment align, float x, float y, const char *text, Font *font);
void draw_text_auto_wrapped(Alignment align, float x, float y, const char *text, int width, Font *font);
void draw_text_prerendered(Alignment align, float x, float y, SDL_Surface *surf);

int stringwidth(char *s, Font *font);
int stringheight(char *s, Font *font);
int charwidth(char c, Font *font);

void shorten_text_up_to_width(char *s, float width, Font *font);
void wrap_text(char *buf, size_t bufsize, const char *src, int width, Font *font);

void init_fonts(void);
void uninit_fonts(void);
void load_fonts(float quality);
void reload_fonts(float quality);
void free_fonts(void);
void update_font_cache(void);

extern struct Fonts {
	union {
		struct {
			Font *standard;
			Font *mainmenu;
			Font *small;
			Font *hud;
			Font *mono;
			Font *monosmall;
			Font *monotiny;
		};

		Font *first;
	};
} _fonts;