source: trunk/tests/gui_test/nv_gui_test.cc

#include <nv/gl/gl_device.hh>
#include <nv/gui/gui_environment.hh>
#include <nv/sdl/sdl_window_manager.hh>
#include <nv/interface/context.hh>
#include <nv/interface/window_manager.hh>
#include <nv/core/logging.hh>
#include <nv/core/logger.hh>
#include <nv/core/random.hh>

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

application::application()
{
        m_device = new nv::gl_device();
        m_wm     = new nv::sdl::window_manager;
        m_window = m_wm->create_window( m_device, 800, 600, false );
        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_1      : bring_to_front(0); break;
//                                      case nv::KEY_2      : bring_to_front(1); break;
//                                      case nv::KEY_3      : bring_to_front(2); break;
//                                      case nv::KEY_4      : bring_to_front(3); break;
//                                      case nv::KEY_5      : bring_to_front(4); break;
                                        case nv::KEY_N      : spawn_window(); break;
                                        case nv::KEY_K      : kill_window(); break;
                                        case nv::KEY_ESCAPE : keypress = 1; break;
                                        }
                                }
                                break;
                        }
                        m_guienv->process_io_event( event );
                }
        }
        return true;
}

void application::spawn_window()
{
        nv::ivec2 a = nv::random::get().range( nv::ivec2(), nv::ivec2( 600, 400 ) );
        nv::ivec2 b = nv::random::get().range( nv::ivec2( 40, 40 ), nv::ivec2( 240, 240 ) );
        nv::gui::handle e = m_guienv->create_element( nv::rectangle(a).dim(b) );
        m_guienv->set_class( e, "window" );
        m_guienv->set_text( e, "Window "+nv::to_string(m_windows.size()+1) );
        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 = nv::random::get().urand( m_windows.size() );
        m_guienv->destroy_element( m_windows[index] );
        m_windows.erase( m_windows.begin() + index );
}

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

// void application::bring_to_front( int i )
// {
//      if ( i >= 0 && i < m_windows.size() )
//      {
//              m_guienv->bring_to_front( m_windows[i] );
//      }
// }

int main(int, char* [])
{
        nv::random::get().randomize();
        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;
}