/*
   ui/widget.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/primitives.h"
#include "sys/sys.h"
#include "ui/widget.h"

namespace ui {

Widget::Widget(Widget *parent) {
	widget_parent = parent;
	widget_visible = true;
	widget_border = true;
	widget_background = false;
	widget_label.assign("widget");

	if (widget_parent) {
		widget_palette = parent->widget_palette;
		parent->add_child(this);
	} else {
		widget_palette = 0;
	}
}

Widget::~Widget()
{
	if (widget_parent) {
		widget_parent->remove_child(this);
	}

	for (Children::iterator it = widget_children.begin(); it != widget_children.end(); it++) {
		(*it)->widget_parent = 0;
		delete (*it);
	}

	widget_children.clear();
}

size_t Widget::list(size_t indent)
{
	size_t n = 1;
	std::string marker("");
	con_print << aux::pad_left(marker, indent*2) << label() << " " << (size_t)(this) << std::endl;

	for (Children::iterator it = widget_children.begin(); it != widget_children.end(); it++) {
		n += (*it)->list(indent+1);
	}
	return n;
}

void Widget::show()
{
	widget_visible = true;
}

void Widget::hide()
{
	widget_visible = false;
}

void Widget::set_border(bool border)
{
	widget_border = border;
}


void Widget::set_background(bool background)
{
	widget_background = background;
}

void Widget::set_label(std::string const & label)
{
	set_label(label.c_str());
}

void Widget::set_label(char const *label)
{
	widget_label.assign(label);
	aux::to_label(widget_label);
}

void Widget::set_palette(Palette *palette)
{
	widget_palette = palette;
}

void Widget::set_location(float const x, float const y) {
	widget_location.assign(x, y);
}

void Widget::set_size(float const w, float const h)
{
	widget_size.assign(w, h);
}

void Widget::set_width(float const w)
{
	widget_size.x = w;
}
void Widget::set_height(float const h)
{
	widget_size.y = h;
}

Widget::Children::iterator Widget::find_child(Widget *child)
{
	Children::iterator it;
	for (it = widget_children.begin(); it != widget_children.end(); it++) {
		if ((*it) == child)
			return it;
	}

	return it;
}

void Widget::add_child(Widget *child)
{
	Children::iterator it = find_child(child);
	if (it == widget_children.end()) {
		widget_children.push_back(child);
	}
}
	
void Widget::remove_child(Widget *child)
{

	Children::iterator it = find_child(child);
	if (it != widget_children.end()) {
		widget_children.erase(it);
	}
}

void Widget::resize_event()
{
	resize();
	for (Children::iterator it = widget_children.begin(); it != widget_children.end(); it++) {
		(*it)->resize_event();
	}
}

void Widget::resize()
{
}

void Widget::draw_event()
{
	if (!widget_visible)
		return;

	draw();
	for (Children::iterator it = widget_children.begin(); it != widget_children.end(); it++) {
		if ((*it)->visible())
			(*it)->draw_event();
	}
}

void Widget::draw()
{
	draw_background();
	draw_border();
}

void Widget::draw_background()
{
	if (!widget_background)
		return;

	if (palette())
		render::gl::color(palette()->background());
	math::Vector2f v(to_global(location()));
	render::primitives::rectangle(v, size());
}

void Widget::draw_border()
{
	if (!widget_border)
		return;

	if (palette())
		render::gl::color(palette()->border());
	math::Vector2f v(to_global(location()));
	render::primitives::border(v, size());
}

}