source: trunk/tests/gui_test/nv_gui_test.cc @ 189

#include <nv/gl/gl_device.hh>
#include <nv/gui/gui_environment.hh>
#include <nv/logging.hh>
#include <nv/logger.hh>
#include <cstdlib> // rand
#include <ctime> // time

class application
{
public:
        application();
        bool initialize();
        bool run();
        void kill_window();
        void spawn_window();
        void recolor_window();
        ~application();
protected:
        nv::device* m_device;
        nv::window* m_window;
        nv::clear_state m_clear_state;
        nv::gui::environment* m_guienv;
        std::vector<nv::gui::element*>   m_windows;
};

application::application()
{
        m_device = new nv::gl_device();
        m_window = m_device->create_window( 800, 600 );
        m_clear_state.buffers = nv::clear_state::COLOR_AND_DEPTH_BUFFER;
        m_guienv = new nv::gui::environment( m_window );
        m_guienv->load_style( "test.style.lua" );
}

bool application::initialize()
{
        return true;
}

bool application::run()
{
        int keypress = 0;

        while(!keypress) 
        {
                m_guienv->update();

                m_window->get_context()->clear( m_clear_state );
                m_guienv->draw();
                m_window->swap_buffers();

                nv::io_event event;
                while(m_window->poll_event(event)) 
                {      
                        switch (event.type) 
                        {
                        case nv::EV_QUIT:
                                keypress = 1;
                                break;
                        case nv::EV_KEY:
                                if (event.key.pressed)
                                {
                                        switch (event.key.code) 
                                        {
                                        case nv::KEY_N      : spawn_window(); break;
                                        case nv::KEY_K      : kill_window(); break;
                                        case nv::KEY_ESCAPE : keypress = 1; break;
                                        }
                                }
                                break;
                        }
                }
        }
        return true;
}

void application::spawn_window()
{
        glm::ivec2 a( std::rand() % 600, std::rand() % 400 );
        glm::ivec2 b( std::rand() % 200 + 40, std::rand() % 200 + 40 );
        nv::gui::element* e = new nv::gui::element( m_guienv, nv::rectangle(a).dim(b) );
        e->set_class( "window" );
        e->set_text("Window "+nv::to_string(m_windows.size()+1) );
        m_guienv->add_child( e );
        NV_LOG( nv::LOG_INFO, "Spawn (" << a.x << "," << a.y << "x" << b.x << "," << b.y << ")" );
        m_windows.push_back( e );
}

void application::kill_window()
{
        if ( m_windows.size() == 0 ) return;
        size_t index = rand() % m_windows.size();
        delete m_windows[ index ];
        m_windows.erase( m_windows.begin() + index );
}

application::~application()
{
        m_windows.clear();
        delete m_window;
        delete m_device;
}

int main(int, char* [])
{
        std::srand((unsigned int) std::time(0) );
        nv::logger log(nv::LOG_TRACE);
        log.add_sink( new nv::log_file_sink("log.txt"), nv::LOG_TRACE );
        log.add_sink( new nv::log_console_sink(), nv::LOG_TRACE );
        
        NV_LOG( nv::LOG_NOTICE, "Logging started" );
        application app;
        if ( app.initialize() )
        {
                app.run();
        }
        NV_LOG( nv::LOG_NOTICE, "Logging stopped" );

        return 0;
}