| 1 | // Copyright (C) 2015 ChaosForge Ltd
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| 2 | // http://chaosforge.org/
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| 3 | //
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| 4 | // This file is part of Nova libraries.
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| 5 | // For conditions of distribution and use, see copying.txt file in root folder.
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| 6 |
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| 7 | #include "nv/gui/gui_ascii_renderer.hh"
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| 8 |
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| 9 | #include "nv/core/logging.hh"
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| 10 |
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| 11 | using namespace nv;
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| 12 | using namespace nv::gui;
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| 13 |
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| 14 |
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| 15 | struct ascii_render_data : public render_data
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| 16 | {
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| 17 | ascii_render_data() {}
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| 18 | bool clear;
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| 19 | bool border;
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| 20 | uchar8 border_chars[8];
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| 21 | uint32 border_color;
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| 22 | uint32 text_color;
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| 23 | };
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| 24 |
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| 25 |
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| 26 | ascii_renderer::ascii_renderer( terminal* t )
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| 27 | : m_terminal(t)
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| 28 | {
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| 29 |
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| 30 | }
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| 31 |
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| 32 | void ascii_renderer::redraw( element* e, uint32 )
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| 33 | {
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| 34 | ascii_render_data* er = nullptr;
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| 35 | if ( e->m_render_data == nullptr )
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| 36 | {
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| 37 | er = new ascii_render_data;
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| 38 | er->border = false;
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| 39 | er->clear = false;
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| 40 | er->text_color = 0;
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| 41 | e->m_render_data = er;
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| 42 | }
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| 43 | else
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| 44 | er = static_cast< ascii_render_data* >( e->m_render_data );
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| 45 |
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| 46 | rectangle abs = e->m_absolute;
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| 47 | if ( abs != get_area() )
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| 48 | {
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| 49 | er->clear = true;
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| 50 | int color = 0;
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| 51 | string128 path;
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| 52 | const char* stext[] = { nullptr, "selected", "hover" };
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| 53 | const char* selector = stext[0];
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| 54 | if ( e->m_flags[HOVER] ) selector = stext[2];
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| 55 | if ( e->m_flags[SELECTED] ) selector = stext[1];
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| 56 |
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| 57 |
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| 58 | m_style.get( e, "ascii_color", selector, color );
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| 59 | er->text_color = uint32( color );
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| 60 | er->border = false;
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| 61 | if ( m_style.get( e, "ascii_border", selector, path ) )
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| 62 | {
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| 63 | er->border = true;
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| 64 | er->border_color = er->text_color;
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| 65 | int border_color = 0;
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| 66 | if ( m_style.get( e, "ascii_border_color", selector, border_color ) )
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| 67 | er->border_color = uint32( border_color );
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| 68 | for ( uint32 i = 0; i < 8 && i < path.length(); i++ )
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| 69 | er->border_chars[i] = static_cast< uchar8 >( path[i] );
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| 70 | }
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | void ascii_renderer::draw( element* e )
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| 75 | {
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| 76 | ascii_render_data* er = static_cast< ascii_render_data* >( e->m_render_data );
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| 77 | rectangle abs = e->m_absolute;
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| 78 | if ( er->clear ) m_terminal->clear( abs );
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| 79 | if ( er->border )
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| 80 | {
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| 81 | for ( int x = 0; x < abs.get_width(); ++x )
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| 82 | {
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| 83 | m_terminal->print( position( abs.ul.x + x, abs.ul.y ), er->border_color, er->border_chars[0] );
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| 84 | m_terminal->print( position( abs.ul.x + x, abs.lr.y ), er->border_color, er->border_chars[1] );
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| 85 | }
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| 86 |
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| 87 | for ( int y = 0; y < abs.get_height(); ++y )
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| 88 | {
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| 89 | m_terminal->print( position( abs.ul.x, abs.ul.y + y ), er->border_color, er->border_chars[2] );
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| 90 | m_terminal->print( position( abs.lr.x, abs.ul.y + y ), er->border_color, er->border_chars[3] );
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| 91 | }
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| 92 |
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| 93 | m_terminal->print( abs.ul, er->border_color, er->border_chars[4] );
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| 94 | m_terminal->print( abs.ur(), er->border_color, er->border_chars[5] );
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| 95 | m_terminal->print( abs.ll(), er->border_color, er->border_chars[6] );
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| 96 | m_terminal->print( abs.lr, er->border_color, er->border_chars[7] );
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| 97 | m_terminal->update();
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| 98 | }
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| 99 | if ( !e->m_text.empty() )
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| 100 | {
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| 101 | position p = abs.ul;
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| 102 | for ( char c : e->m_text )
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| 103 | {
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| 104 | m_terminal->print( p, er->text_color, static_cast< unsigned char >( c ) );
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| 105 | ++p.x;
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| 106 | }
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| 107 | }
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| 108 | }
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| 109 |
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| 110 | void ascii_renderer::draw()
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| 111 | {
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| 112 | m_terminal->update();
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| 113 | }
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| 114 |
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| 115 | void nv::gui::ascii_renderer::on_style_change( element* e )
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| 116 | {
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| 117 | m_style.load_flags( e );
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| 118 | }
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| 119 |
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| 120 | void nv::gui::ascii_renderer::on_hover_change( element* e )
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| 121 | {
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| 122 | if ( e->m_flags[DIRTY_HOVER] ) e->m_flags[DIRTY] = true;
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| 123 | }
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| 124 |
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| 125 | void nv::gui::ascii_renderer::on_select_change( element* e )
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| 126 | {
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| 127 | if ( e->m_flags[DIRTY_SELECT] ) e->m_flags[DIRTY] = true;
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| 128 | }
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| 129 |
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| 130 | rectangle ascii_renderer::get_area() const
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| 131 | {
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| 132 | return rectangle().dim( m_terminal->get_size() );
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| 133 | }
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| 134 |
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| 135 | ascii_renderer::~ascii_renderer()
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| 136 | {
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| 137 |
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| 138 | }
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