210 lines
6.6 KiB
C++
210 lines
6.6 KiB
C++
/***********************************************************************
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* foptimove.cpp - Cursor movement optimization *
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* *
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* This file is part of the Final Cut widget toolkit *
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* *
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* Copyright 2015-2018 Markus Gans *
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* *
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* The Final Cut is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public License *
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* as published by the Free Software Foundation; either version 3 of *
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* the License, or (at your option) any later version. *
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* *
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* The Final Cut 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 Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this program. If not, see *
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* <http://www.gnu.org/licenses/>. *
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***********************************************************************/
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/* Standalone class
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* ════════════════
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*
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* ▕▔▔▔▔▔▔▔▔▔▔▔▏
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* ▕ FOptiMove ▏
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* ▕▁▁▁▁▁▁▁▁▁▁▁▏
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*/
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// The cursor optimization based on ncurses lib_mvcur.c
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#ifndef FOPTIMOVE_H
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#define FOPTIMOVE_H
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#if !defined (USE_FINAL_H) && !defined (COMPILE_FINAL_CUT)
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#error "Only <final/final.h> can be included directly."
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#endif
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#include <assert.h>
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#if defined(__sun) && defined(__SVR4)
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#include <termio.h>
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typedef struct termio SGTTY;
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typedef struct termios SGTTYS;
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#ifdef _LP64
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typedef unsigned int chtype;
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#else
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typedef unsigned long chtype;
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#endif
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#include <term.h> // need for tparm
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#else
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#include <term.h> // need for tparm
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#endif
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#include <cctype>
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#include <climits>
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#include <cstdio> // need for printf
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#include <cstdlib>
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#include <cstring>
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#include <iostream>
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//----------------------------------------------------------------------
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// class FOptiMove
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class FOptiMove
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{
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public:
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// Constructor
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explicit FOptiMove (int = 0);
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// Destructor
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~FOptiMove();
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// Accessors
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const char* getClassName() const;
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// Mutators
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void setBaudRate (int);
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void setTabStop (int);
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void setTermSize (int, int);
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int set_cursor_home (char[]);
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int set_cursor_to_ll (char[]);
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int set_carriage_return (char[]);
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int set_tabular (char[]);
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int set_back_tab (char[]);
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int set_cursor_up (char[]);
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int set_cursor_down (char[]);
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int set_cursor_left (char[]);
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int set_cursor_right (char[]);
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int set_cursor_address (char[]);
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int set_column_address (char[]);
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int set_row_address (char[]);
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int set_parm_up_cursor (char[]);
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int set_parm_down_cursor (char[]);
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int set_parm_left_cursor (char[]);
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int set_parm_right_cursor (char[]);
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int set_erase_chars (char[]);
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int set_repeat_char (char[]);
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int set_clr_bol (char[]);
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int set_clr_eol (char[]);
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void set_auto_left_margin (const bool&);
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void set_eat_newline_glitch (const bool&);
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// Methods
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void check_boundaries (int&, int&, int&, int&);
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char* moveCursor (int, int, int, int);
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void printDurations();
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private:
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// Constant
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static const std::size_t BUF_SIZE = 512;
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// Typedefs
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typedef unsigned char uChar;
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typedef unsigned int uInt;
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typedef struct
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{
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char* cap;
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int duration;
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int length;
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} capability;
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// Constants
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static const int LONG_DURATION = INT_MAX;
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// value for a long capability waiting time
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static const int MOVE_LIMIT = 7;
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// maximum character distance to avoid direct cursor addressing
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// Methods
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void calculateCharDuration();
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int capDuration (char[], int);
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int capDurationToLength (int);
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int repeatedAppend (const capability&, volatile int, char*);
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int relativeMove (char[], int, int, int, int);
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int verticalMove (char[], int, int);
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void downMove (char[], int&, int, int);
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void upMove (char[], int&, int, int);
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int horizontalMove (char[], int, int);
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void rightMove (char[], int&, int, int);
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void leftMove (char[], int&, int, int);
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bool isWideMove (int, int, int, int);
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bool isMethod0Faster (int&, int, int);
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bool isMethod1Faster (int&, int, int, int, int);
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bool isMethod2Faster (int&, int, int, int);
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bool isMethod3Faster (int&, int, int);
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bool isMethod4Faster (int&, int, int);
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bool isMethod5Faster (int&, int, int, int);
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void moveByMethod (int, int, int, int, int);
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// Data Members
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capability F_cursor_home;
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capability F_carriage_return;
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capability F_cursor_to_ll;
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capability F_tab;
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capability F_back_tab;
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capability F_cursor_up;
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capability F_cursor_down;
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capability F_cursor_left;
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capability F_cursor_right;
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capability F_cursor_address;
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capability F_column_address;
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capability F_row_address;
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capability F_parm_up_cursor;
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capability F_parm_down_cursor;
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capability F_parm_left_cursor;
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capability F_parm_right_cursor;
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capability F_erase_chars;
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capability F_repeat_char;
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capability F_clr_bol;
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capability F_clr_eol;
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bool automatic_left_margin;
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bool eat_nl_glitch;
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char move_buf[BUF_SIZE];
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int char_duration;
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int baudrate;
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int tabstop;
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int screen_width;
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int screen_height;
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};
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#pragma pack(pop)
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// FOptiMove inline functions
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//----------------------------------------------------------------------
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inline const char* FOptiMove::getClassName() const
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{ return "FOptiMove"; }
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//----------------------------------------------------------------------
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inline void FOptiMove::set_auto_left_margin (const bool& bcap)
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{ automatic_left_margin = bcap; }
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//----------------------------------------------------------------------
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inline void FOptiMove::set_eat_newline_glitch (const bool& bcap)
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{ eat_nl_glitch = bcap; }
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#endif // FOPTIMOVE_H
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