Keith Winstein
144 lines
3.7 KiB
C++
144 lines
3.7 KiB
C++
#include "terminal.hpp"
|
|
|
|
using namespace Terminal;
|
|
|
|
/* Print a new "frame" to the terminal, using ANSI/ECMA-48 escape codes. */
|
|
|
|
std::string Display::new_frame( Framebuffer &f )
|
|
{
|
|
f.back_color_erase();
|
|
|
|
std::string screen;
|
|
|
|
/* has window title changed? */
|
|
if ( (!initialized)
|
|
|| (f.get_window_title() != last_frame.get_window_title()) ) {
|
|
/* set window title */
|
|
screen.append( "\033]0;[rtm] " );
|
|
std::vector<wchar_t> window_title = f.get_window_title();
|
|
for ( std::vector<wchar_t>::iterator i = window_title.begin();
|
|
i != window_title.end();
|
|
i++ ) {
|
|
char utf8[ 8 ];
|
|
snprintf( utf8, 8, "%lc", *i );
|
|
screen.append( utf8 );
|
|
}
|
|
screen.append( "\033\\" );
|
|
}
|
|
|
|
/* has reverse video state changed? */
|
|
if ( (!initialized)
|
|
|| (f.ds.reverse_video != last_frame.ds.reverse_video) ) {
|
|
/* set reverse video */
|
|
char rev[ 8 ];
|
|
snprintf( rev, 8, "\033[?5%c", (f.ds.reverse_video ? 'h' : 'l') );
|
|
screen.append( rev );
|
|
}
|
|
|
|
/* has size changed? */
|
|
if ( (!initialized)
|
|
|| (f.ds.get_width() != last_frame.ds.get_width())
|
|
|| (f.ds.get_height() != last_frame.ds.get_height()) ) {
|
|
/* clear screen */
|
|
screen.append( "\033[0m\033[H\033[2J" );
|
|
initialized = false;
|
|
cursor_x = cursor_y = 0;
|
|
current_rendition_string = "\033[0m";
|
|
}
|
|
|
|
/* iterate for every cell */
|
|
for ( int y = 0; y < f.ds.get_height(); y++ ) {
|
|
for ( int x = 0; x < f.ds.get_width(); /* let charwidth handle advance */ ) {
|
|
Cell *cell = f.get_cell( y, x );
|
|
|
|
if ( initialized
|
|
&& ( *cell == *(last_frame.get_cell( y, x )) ) ) {
|
|
x += cell->width;
|
|
continue;
|
|
}
|
|
|
|
if ( (x != cursor_x) || (y != cursor_y) ) {
|
|
char curmove[ 32 ];
|
|
snprintf( curmove, 32, "\033[%d;%dH", y + 1, x + 1 );
|
|
screen.append( curmove );
|
|
}
|
|
|
|
cursor_x = x;
|
|
cursor_y = y;
|
|
|
|
std::string rendition_str = cell->renditions.sgr();
|
|
|
|
if ( current_rendition_string != rendition_str ) {
|
|
/* print renditions */
|
|
screen.append( rendition_str );
|
|
current_rendition_string = rendition_str;
|
|
}
|
|
|
|
if ( cell->contents.empty() ) {
|
|
/* see how far we can stretch a clear */
|
|
int clear_count = 0;
|
|
for ( int col = x; col < f.ds.get_width(); col++ ) {
|
|
Cell *other_cell = f.get_cell( y, col );
|
|
if ( (cell->renditions == other_cell->renditions)
|
|
&& (other_cell->contents.empty()) ) {
|
|
clear_count++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
char clearer[ 32 ];
|
|
snprintf( clearer, 32, "\033[%dX", clear_count );
|
|
screen.append( clearer );
|
|
|
|
x += clear_count;
|
|
continue;
|
|
}
|
|
|
|
/* cells that begin with combining character get combiner attached to no-break space */
|
|
if ( cell->fallback ) {
|
|
char utf8[ 8 ];
|
|
snprintf( utf8, 8, "%lc", 0xA0 );
|
|
screen.append( utf8 );
|
|
}
|
|
|
|
for ( std::vector<wchar_t>::iterator i = cell->contents.begin();
|
|
i != cell->contents.end();
|
|
i++ ) {
|
|
char utf8[ 8 ];
|
|
snprintf( utf8, 8, "%lc", *i );
|
|
screen.append( utf8 );
|
|
}
|
|
|
|
x += cell->width;
|
|
cursor_x += cell->width;
|
|
}
|
|
}
|
|
|
|
/* has cursor location changed? */
|
|
if ( (!initialized)
|
|
|| (f.ds.get_cursor_row() != cursor_y)
|
|
|| (f.ds.get_cursor_col() != cursor_x) ) {
|
|
char curmove[ 32 ];
|
|
snprintf( curmove, 32, "\033[%d;%dH", f.ds.get_cursor_row() + 1,
|
|
f.ds.get_cursor_col() + 1 );
|
|
screen.append( curmove );
|
|
cursor_x = f.ds.get_cursor_col();
|
|
cursor_y = f.ds.get_cursor_row();
|
|
}
|
|
|
|
/* has cursor visibility changed? */
|
|
if ( (!initialized)
|
|
|| (f.ds.cursor_visible != last_frame.ds.cursor_visible) ) {
|
|
if ( f.ds.cursor_visible ) {
|
|
screen.append( "\033[?25h" );
|
|
} else {
|
|
screen.append( "\033[?25l" );
|
|
}
|
|
}
|
|
|
|
last_frame = f;
|
|
initialized = true;
|
|
|
|
return screen;
|
|
}
|