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/*
   render/text.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#include "auxiliary/functions.h"
#include "render/text.h"
#include "render/textures.h"
#include "sys/sys.h"

namespace render
{

float Text::text_fontwidth = 16.0f;
float Text::text_fontheight = 24.0f;

math::Color * Text::base_color[10];
math::Color * Text::core_color[26];

void Text::init()
{
	// base colors
	// Black=0, Red=1, Green=2, Yellow=3, Blue=4, Cyan=5, Magenta=6, White=7
	base_color[0] = new math::Color(0, 0, 0);
	base_color[1] = new math::Color(1, 0, 0);
	base_color[2] = new math::Color(0, 1, 0);
	base_color[3] = new math::Color(1, 1, 0);
	base_color[4] = new math::Color(0, 0, 1);
	base_color[5] = new math::Color(0, 1, 1);
	base_color[6] = new math::Color(1, 0, 1);
	base_color[7] = new math::Color(1, 1, 1);
	base_color[8] = new math::Color(1, 1, 1);
	base_color[9] = new math::Color(1, 1, 1);

	for (size_t i = 0; i < 26; i++) {
		core_color[i] = new math::Color(.75, .75, .75);
	}

	// N - normal color
	core_color[(size_t)('N'-'A')]->assign(.75, .75, .75);
	// D - Debug color
	core_color[(size_t)('D'-'A')]->assign(.5, .5, .5);
	// B - bold color
	core_color[(size_t)('B'-'A')]->assign(1, 1, 1);
	// W - warning color
	core_color[(size_t)('W'-'A')]->assign(1, 1, 0);
	// R - Error color
	core_color[(size_t)('R'-'A')]->assign(1, 0, 0);
	// F - Fancy color
	core_color[(size_t)('F'-'A')]->assign(0, 1, 0);
}

void Text::shutdown()
{
	for (size_t i = 0; i < 10; i++) {
		delete base_color[i];
		base_color[i] = 0;
	}

	for (size_t i = 0; i < 26; i++) {
		delete core_color[i];
		core_color[i] = 0;
	}
}

void Text::assign_color(const char c, const math::Color &color)
{
	if (('A' <= c) && (c <= 'Z')) {
		core_color[(size_t)(c - 'A')]->assign(color);
	} else if (('0' <= c) && (c <= '9')) {
		base_color[(size_t)(c - '0')]->assign(color);
	}
}

void Text::setcolor(const char color)
{
	if (('A' <= color) && (color <= 'Z')) {
		gl::color(*core_color[(size_t)(color - 'A')]);
	}

	else if (('0' <= color) && (color <= '9')) {
		gl::color(*base_color[(size_t)(color - '0')]);
	}
}

void Text::setfont(const char *texture, float width, float height)
{
	std::string  tf("bitmaps/fonts/");
	tf.append(texture);

	Textures::bind(tf, false);
	text_fontwidth = width;
	text_fontheight = height;

}

void Text::draw(float x, float y, const char ascii)
{
	if (ascii != ' ') {
		int row = (int) ascii >> 4;
		int col = (int) ascii & 15;

		float frow = row * 0.0625f;
		float fcol = col * 0.0625f;

		gl::begin(gl::Quads);

		glTexCoord2f(fcol, frow);
		gl::vertex(x, y, 0);

		glTexCoord2f(fcol + 0.0625f, frow);
		gl::vertex(x + text_fontwidth, y, 0);

		glTexCoord2f(fcol + 0.0625f, frow + 0.0625f);
		gl::vertex(x + text_fontwidth, y + text_fontheight, 0);

		glTexCoord2f(fcol, frow + 0.0625f);
		gl::vertex(x, y + text_fontheight, 0);

		gl::end();
	}
}


void Text::draw(float x, float y, const char *text)
{
	const char *c = text;
	while (*c) {
		if (aux::is_base_color_code(c)) {
			c++;
			gl::color(*base_color[(size_t)(*c - '0')]);
		} else if (aux::is_core_color_code(c)) {
			c++;
			gl::color(*core_color[(size_t)(*c - 'A')]);
		} else {
			draw(x, y, *c);
			x += text_fontwidth;
		}
		c++;
	}
}

void Text::draw(float x, float y, std::stringstream & textstream)
{
	char line[MAXCMDSIZE];
	while (textstream.getline(line, MAXCMDSIZE - 1)) {
		draw(x, y, line);
		y += text_fontheight;
	}
	textstream.clear();
}

void Text::draw(float x, float y, const std::string & text)
{
	draw(x, y, text.c_str());
}

}