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/*
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)
{
gl::color(r, g, b, a);
}
void color(math::Color const & color)
{
gl::color(color);
}
void color_code(const char c)
{
render::Text::setcolor(c);
}
void border(const math::Vector2f &location, const math::Vector2f &size)
{
using namespace 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(const math::Vector2f &location, const math::Vector2f &size)
{
using namespace 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();
}
// draw a bitmap
void bitmap(const math::Vector2f &location, const math::Vector2f &size, std::string const &texture)
{
render::Textures::bind("bitmaps/" + texture);
gl::enable(GL_TEXTURE_2D);
gl::begin(gl::Quads);
glTexCoord2f(0.0f, 0.0f);
gl::vertex(location.x +1 , location.y);
glTexCoord2f(1.0f, 0.0f);
gl::vertex(location.x + size.x, location.y);
glTexCoord2f(1.0f, 1.0f);
gl::vertex(location.x + size.x, location.y + size.y -1);
glTexCoord2f(0.0f, 1.0f);
gl::vertex(location.x +1, location.y + size.y - 1);
gl::end();
gl::disable(GL_TEXTURE_2D);
}
// draw aligned text
void label(const math::Vector2f &location, const math::Vector2f &size, const Font *font, const std::string &text, unsigned int align)
{
unsigned int align_horizontal = (align & 0x000F);
if (!align_horizontal)
align_horizontal = AlignLeft;
unsigned int align_vertical = (align & 0x00F0);
if (!align_vertical)
align_vertical = AlignTop;
// apply text font
render::Text::setfont(font->name().c_str(), font->width(), font->height());
// enable OpenGL textures
gl::enable(GL_TEXTURE_2D);
// determine the width and height of the text
// FIXME support multiline text
float text_height = 1.0f * font->height();
float text_width = (float) aux::text_strip(text).size() * font->width();
// calculate drawing position
math::Vector2f v(location);
switch (align_horizontal) {
case AlignLeft:
v.x += font->width();
break;
case AlignHCenter:
v.x += (size.x - text_width) / 2.0f;
break;
case AlignRight:
v.x += size.x - text_width - font->width();
break;
}
switch (align_vertical) {
case AlignTop:
v.y += font->height()*0.5f;
break;
case AlignVCenter:
v.y += (size.y - text_height) / 2.0f;
break;
case AlignBottom:
v.y += size.y - text_height - font->height()*0.5f;
break;
}
render::Text::draw(v.x, v.y, text);
// disable OpenGL textures
gl::disable(GL_TEXTURE_2D);
}
// draw unaligned text
void text(const math::Vector2f &location, const math::Vector2f &size, const Font *font, const std::string &text)
{
render::Text::setfont(font->name().c_str(), font->width(), font->height());
// enable OpenGL textures
gl::enable(GL_TEXTURE_2D);
render::Text::draw(location.x, location.y, text);
// disable OpenGL textures
gl::disable(GL_TEXTURE_2D);
}
// draw unaligned text
void text(const math::Vector2f &location, const math::Vector2f &size, const Font *font, std::stringstream & textstream)
{
render::Text::setfont(font->name().c_str(), font->width(), font->height());
// enable OpenGL textures
gl::enable(GL_TEXTURE_2D);
render::Text::draw(location.x, location.y, textstream);
// disable OpenGL textures
gl::disable(GL_TEXTURE_2D);
}
}
}
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