Keith Winstein
83 lines
1.6 KiB
C++
83 lines
1.6 KiB
C++
#include "terminalframebuffer.hpp"
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using namespace Terminal;
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Cell::Cell()
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: overlapping_cell( NULL ),
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contents(),
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overlapped_cells(),
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fallback( false )
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{}
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Cell::Cell( const Cell &x )
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: overlapping_cell( x.overlapping_cell ),
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contents( x.contents ),
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overlapped_cells( x.overlapped_cells ),
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fallback( x.fallback )
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{}
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Cell & Cell::operator=( const Cell &x )
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{
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overlapping_cell = x.overlapping_cell;
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contents = x.contents;
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overlapped_cells = x.overlapped_cells;
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fallback = x.fallback;
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return *this;
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}
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Row::Row( size_t s_width )
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: cells( s_width )
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{}
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void Cell::reset( void )
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{
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contents.clear();
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fallback = false;
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if ( overlapping_cell ) {
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assert( overlapped_cells.size() == 0 );
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} else {
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for ( std::vector<Cell *>::iterator i = overlapped_cells.begin();
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i != overlapped_cells.end();
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i++ ) {
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(*i)->overlapping_cell = NULL;
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(*i)->reset();
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}
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overlapped_cells.clear();
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}
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}
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Framebuffer::Framebuffer( int s_width, int s_height )
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: width( s_width ), height( s_height ),
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cursor_col( 0 ), cursor_row( 0 ),
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combining_char_col( 0 ), combining_char_row( 0 ),
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rows( height, Row( width ) )
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{}
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void Framebuffer::scroll( int N )
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{
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assert( N >= 0 );
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for ( int i = 0; i < N; i++ ) {
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rows.pop_front();
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rows.push_back( Row( width ) );
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cursor_row--;
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combining_char_row--;
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}
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}
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void Framebuffer::newgrapheme( void )
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{
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combining_char_col = cursor_col;
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combining_char_row = cursor_row;
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}
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void Framebuffer::autoscroll( void )
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{
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if ( cursor_row >= height ) { /* scroll */
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scroll( cursor_row - height + 1 );
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}
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}
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