#include <psemek/app/app.hpp>
#include <psemek/app/main.hpp>

#include <psemek/gfx/gl.hpp>

#include <psemek/ui/controller.hpp>
#include <psemek/ui/default_element_factory.hpp>
#include <psemek/ui/font.hpp>

#include <psemek/geom/camera.hpp>

using namespace psemek;

struct ui_example
	: app::app
{
	ui_example()
		: app("UI example", 1)
	{
		element_factory.set_font(ui::make_default_9x12_font());

		auto screen = element_factory.make_screen();
		screen->add(element_factory.make_button(), ui::screen::x_policy::center, ui::screen::y_policy::center);

		ui_controller.set_root(std::move(screen));
	}

	void on_resize(int width, int height) override
	{
		app::on_resize(width, height);
		ui_controller.reshape({{{0, width}, {0, height}}});
	}

	void on_mouse_move(int x, int y, int dx, int dy) override
	{
		app::on_mouse_move(x, y, dx, dy);
		ui_controller.event(ui::mouse_move{{x, y}});
	}

	void on_left_button_down() override
	{
		app::on_left_button_down();
		ui_controller.event(ui::mouse_click{ui::mouse_button::left, true});
	}

	void on_left_button_up() override
	{
		app::on_left_button_up();
		ui_controller.event(ui::mouse_click{ui::mouse_button::left, false});
	}

	void present() override;

	ui::controller ui_controller;
	ui::default_element_factory element_factory;
};

void ui_example::present()
{
	gl::ClearColor(0.8f, 0.8f, 0.8f, 1.f);
	gl::Clear(gl::COLOR_BUFFER_BIT);

	gfx::render_target rt;
	rt.framebuffer = &gfx::framebuffer::null();
	rt.draw_buffer = gl::BACK_LEFT;
	rt.viewport = {{{0, width()}, {0, height()}}};

	ui_controller.render(rt);
}

int main()
{
	return app::main<ui_example>();
}