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Only flag (underline) predictions on long echo delay

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This commit is contained in:
Keith Winstein
2011-10-13 15:37:26 -04:00
parent dfeaf5eca4
commit 1bb8df69a9
2 changed files with 12 additions and 3 deletions
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terminaloverlay.cpp
+7 -1
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@@ -22,7 +22,9 @@ void OverlayCell::apply( Framebuffer &fb ) const
if ( !(*(fb.get_mutable_cell( row, col )) == replacement) ) {
*(fb.get_mutable_cell( row, col )) = replacement;
fb.get_mutable_cell( row, col )->renditions.bold = true; /* XXX */
if ( flag ) {
fb.get_mutable_cell( row, col )->renditions.underlined = true;
}
}
}
@@ -122,6 +124,9 @@ void PredictionEngine::cull( const Framebuffer &fb )
i++;
}
}
if ( SRTT > 150 ) flagging = true; /* start underlining predicted chars */
if ( SRTT < 100 ) flagging = false; /* use some hysterisis to avoid annoying flicker */
}
OverlayCell::OverlayCell( uint64_t expiration_time, int s_row, int s_col, int background_color )
@@ -342,6 +347,7 @@ void PredictionEngine::new_user_byte( char the_byte, const Framebuffer &fb )
coc->replacement = *existing_cell;
coc->replacement.contents.clear();
coc->replacement.contents.push_back( the_byte );
coc->flag = flagging;
ccm->new_col++;
ccm->expiration_time = now + prediction_len();