Keegan McAllister
c390ee9b80
terminfo does not have reliable information on this, so we hardcode a whitelist of terminal type prefixes. This is the list from Debian's default screenrc, plus "screen" itself (which also covers tmux). Closes #172. Closes #191.
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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Mosh: the mobile shell
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Copyright 2012 Keith Winstein
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TERMINALDISPLAY_HPP
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#define TERMINALDISPLAY_HPP
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#include "terminalframebuffer.h"
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namespace Terminal {
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/* variables used within a new_frame */
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class FrameState {
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public:
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int x, y;
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bool force_next_put;
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std::string str;
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int cursor_x, cursor_y;
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Renditions current_rendition;
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Framebuffer last_frame;
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FrameState( const Framebuffer &s_last )
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: x(0), y(0),
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force_next_put( false ),
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str(), cursor_x(0), cursor_y(0), current_rendition( 0 ),
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last_frame( s_last )
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{
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str.reserve( 1024 );
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}
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void append( const char * s ) { str.append( s ); }
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void appendstring( const std::string s ) { str.append( s ); }
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void append_silent_move( int y, int x );
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};
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class Display {
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private:
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bool has_ech; /* erase character is part of vt200 but not supported by tmux
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(or by "screen" terminfo entry, which is what tmux advertises) */
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bool has_bce; /* erases result in cell filled with background color */
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bool has_title; /* supports window title and icon name */
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int posterize_colors; /* downsample input colors >8 to [0..7] */
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void put_cell( bool initialized, FrameState &frame, const Framebuffer &f ) const;
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public:
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void downgrade( Framebuffer &f ) const { if ( posterize_colors ) { f.posterize(); } }
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std::string new_frame( bool initialized, const Framebuffer &last, const Framebuffer &f ) const;
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Display( bool use_environment );
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};
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}
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#endif
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