source: trunk/src/gui/gui_ascii_renderer.cc @ 520

// Copyright (C) 2015 ChaosForge Ltd
// http://chaosforge.org/
//
// This file is part of Nova libraries. 
// For conditions of distribution and use, see copying.txt file in root folder.

#include "nv/gui/gui_ascii_renderer.hh"

#include "nv/core/logging.hh"

using namespace nv;
using namespace nv::gui;


struct ascii_render_data : public render_data
{
        bool       clear;
        bool       border;
        char       border_chars[8];
        ivec2      padding;
        term_color border_color;
        term_color text_color;
};


ascii_renderer::ascii_renderer( terminal* t )
        : m_terminal(t)
{

}

void ascii_renderer::redraw( element* e, uint32 )
{
        ascii_render_data* er = nullptr;
        if ( e->m_render_data == nullptr )
        {
                er = new ascii_render_data;
                er->border     = false;
                er->clear      = false;
                e->m_render_data = er;
        }
        else 
                er = static_cast< ascii_render_data* >( e->m_render_data );

        rectangle abs = e->m_absolute;
        if ( abs != get_area() )
        {
                er->clear = true;
                int color = 0;
                string128 path;
                const char* stext[] = { nullptr, "selected", "hover" };
                const char* selector = stext[0];
                if ( e->m_flags[HOVER] )    selector = stext[2];
                if ( e->m_flags[SELECTED] ) selector = stext[1];

                
                m_style.get( e, "ascii_color", selector, color );
                er->text_color = term_color::color( color );
                er->border     = false;
                vec4 padding;
                m_style.get( e, "ascii_padding", selector, padding );
                er->padding    = ivec2( int( padding.x ), int( padding.y ) );

                if ( m_style.get( e, "ascii_border", selector, path ) )
                {
                        er->border = true;
                        er->border_color = er->text_color;
                        int border_color = 0;
                        if ( m_style.get( e, "ascii_border_color", selector, border_color ) )
                                er->border_color = term_color::color( border_color );
                        for ( uint32 i = 0; i < 8 && i < path.length(); i++ )
                                er->border_chars[i] = path[i];
                }
        }
}

void ascii_renderer::draw( element* e )
{
        ascii_render_data* er = static_cast< ascii_render_data* >( e->m_render_data );
        rectangle abs = e->m_absolute;
        if ( er->clear ) m_terminal->clear( abs, term_color::LIGHTGRAY, term_color() );
        if ( er->border )
        {
                for ( int x = 0; x < abs.get_width(); ++x )
                {
                        m_terminal->print( position( abs.ul.x + x, abs.ul.y ), er->border_color, term_color(), er->border_chars[0] );
                        m_terminal->print( position( abs.ul.x + x, abs.lr.y ), er->border_color, term_color(), er->border_chars[1] );
                }

                for ( int y = 0; y < abs.get_height(); ++y )
                {
                        m_terminal->print( position( abs.ul.x, abs.ul.y + y ), er->border_color, term_color(), er->border_chars[2] );
                        m_terminal->print( position( abs.lr.x, abs.ul.y + y ), er->border_color, term_color(), er->border_chars[3] );
                }

                m_terminal->print( abs.ul,   er->border_color, term_color(), er->border_chars[4] );
                m_terminal->print( abs.ur(), er->border_color, term_color(), er->border_chars[5] );
                m_terminal->print( abs.ll(), er->border_color, term_color(), er->border_chars[6] );
                m_terminal->print( abs.lr,   er->border_color, term_color(), er->border_chars[7] );
                //m_terminal->update();
        }
        if ( !e->m_text.empty() )
        {
                position p = abs.ul + er->padding;
                for ( char c : e->m_text )
                {
                        m_terminal->print( p, er->text_color, term_color(), c );
                        ++p.x;
                }
        }
}

void ascii_renderer::draw()
{
        m_terminal->update();
}

void nv::gui::ascii_renderer::on_style_change( element* e )
{
        m_style.load_flags( e );
}

void nv::gui::ascii_renderer::on_hover_change( element* e )
{
        if ( e->m_flags[DIRTY_HOVER] ) e->m_flags[DIRTY] = true;
}

void nv::gui::ascii_renderer::on_select_change( element* e )
{
        if ( e->m_flags[DIRTY_SELECT] ) e->m_flags[DIRTY] = true;
}

rectangle ascii_renderer::get_area() const
{
        return rectangle().dim( m_terminal->get_size() );
}

ascii_renderer::~ascii_renderer()
{

}