source: trunk/src/gui/gui_environment.cc @ 266

// Copyright (C) 2012-2013 ChaosForge / Kornel Kisielewicz
// http://chaosforge.org/
//
// This file is part of NV Libraries.
// For conditions of distribution and use, see copyright notice in nv.hh

#include "nv/gui/gui_environment.hh"

#include "nv/gui/gui_renderer.hh"


        /*

        TODO: parse a lua stylesheet as per Trac wiki

        IDEA: Store everything in std::unordered_maps, with lua_value's?

        A lua_value is a variant stores strings as const char* that deletes them on destructor?
        Question is that there might not be much gained on speed anyway, due to Lua's speed.
        Special function field allows delayed per parse execution?

        */

#include "nv/gfx/sliced_buffer.hh"
#include "nv/gfx/texture_atlas.hh"

#include <vector>

using namespace nv;
using namespace nv::gui;

environment::environment( window* w, const std::string& shader_path )
        : m_renderer( nullptr ), m_window( w ), m_screen( nullptr )
{
        m_area.dim( dimension( w->get_width(), w->get_height() ) );
        m_screen = new screen( m_area );
        m_renderer = new renderer( w, shader_path );
}

void nv::gui::environment::load_style( const std::string& filename )
{
        m_renderer->load_style( filename );
}

element* nv::gui::environment::create_element( element* parent, const rectangle& r )
{
        element* result = new element( r );
        if ( parent == nullptr ) parent = m_screen;
        parent->add_child( result );
        return result;
}

void nv::gui::environment::destroy_element( element* e )
{
        destroy_children( e );
        e->detach();
        delete e;
}

void environment::update( element* e, uint32 elapsed )
{
        e->on_update( elapsed );
        if ( e->is_visible() )
        {
                for ( object* i : *e )
                {
                        update( ((element*)i), elapsed );
                }
        }
        if ( e->is_dirty() || e->m_render_data == nullptr )
        {
                m_renderer->redraw( e, elapsed );
                e->set_dirty( false );
        }
}

void environment::draw( element* e )
{
        if ( e->is_visible() )
        {
                e->on_draw();
                m_renderer->draw( e );
                for ( object* i : *e )
                {
                        draw((element*)i);
                }
        }
}

void environment::update()
{
        update( m_screen, 0 );
}

void environment::draw()
{
        draw( m_screen );
        m_renderer->draw();
}

void environment::add_child( element* child )
{
        m_screen->add_child( child );
}

void environment::destroy_children( element* e )
{
        while ( !e->m_children.empty() )
        {
                destroy_element( (element*)e->m_children.front() );
        }
}


environment::~environment()
{
        destroy_element( m_screen );
        delete m_renderer;
}