/*
   ui/paint.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 "math/vector2f.h"
#include "render/gl.h"
#include "render/text.h"
#include "render/textures.h"
#include "ui/paint.h"

namespace ui {

// contains the interface between the user interface and the render library
namespace paint {

void color(float r, float g, float b, float a)
{
	render::gl::color(r, g, b, a);
}

void color(math::Color const & color)
{
	render::gl::color(color);
}

void border(math::Vector2f const &location, math::Vector2f const &size)
{
	using namespace render::gl;

	begin(LineLoop);
	vertex(location.x +1 , location.y);
	vertex(location.x + size.x, location.y);
	vertex(location.x + size.x, location.y + size.y -1);
	vertex(location.x +1, location.y + size.y - 1);
	end();
}

void rectangle(math::Vector2f const &location, math::Vector2f const &size)
{
	using namespace render::gl;

	begin(Quads);
	vertex(location.x +1 , location.y);
	vertex(location.x + size.x, location.y);
	vertex(location.x + size.x, location.y + size.y -1);
	vertex(location.x +1, location.y + size.y - 1);
	end();
}

void bitmap(math::Vector2f const &location, math::Vector2f const &size, std::string const &texture)
{

	using namespace render::gl;
	
	render::Textures::bind("bitmaps/" + texture);
	enable(GL_TEXTURE_2D);

	begin(Quads);

	glTexCoord2f(0.0f, 0.0f);
	vertex(location.x +1 , location.y);

	glTexCoord2f(1.0f, 0.0f);
	vertex(location.x + size.x, location.y);

	glTexCoord2f(1.0f, 1.0f);
	vertex(location.x + size.x, location.y + size.y -1);

	glTexCoord2f(0.0f, 1.0f);
	vertex(location.x +1, location.y + size.y - 1);
	end();

	disable(GL_TEXTURE_2D);
}

void text_centered(math::Vector2f const &location, math::Vector2f const &size, std::string const &text, Font const *font)
{
	using namespace render::gl;

	render::Text::setfont(font->name().c_str(), font->width(), font->height());
	enable(GL_TEXTURE_2D);
	
	math::Vector2f v(location);

	v.x += (size.x - aux::text_strip(text).size() * font->width()) /2.0f;
	v.y += (size.y - font->height()) / 2.0f;

	render::Text::draw(v.x, v.y, text);

	disable(GL_TEXTURE_2D);
}

}

}