finalcut/include/final/foptimove.h

210 lines
6.6 KiB
C++

/***********************************************************************
* foptimove.cpp - Cursor movement optimization *
* *
* This file is part of the Final Cut widget toolkit *
* *
* Copyright 2015-2018 Markus Gans *
* *
* The Final Cut is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of *
* the License, or (at your option) any later version. *
* *
* The Final Cut is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
***********************************************************************/
/* Standalone class
* ════════════════
*
* ▕▔▔▔▔▔▔▔▔▔▔▔▏
* ▕ FOptiMove ▏
* ▕▁▁▁▁▁▁▁▁▁▁▁▏
*/
// The cursor optimization based on ncurses lib_mvcur.c
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#ifndef FOPTIMOVE_H
#define FOPTIMOVE_H
#if !defined (USE_FINAL_H) && !defined (COMPILE_FINAL_CUT)
#error "Only <final/final.h> can be included directly."
#endif
#include <assert.h>
#if defined(__sun) && defined(__SVR4)
#include <termio.h>
typedef struct termio SGTTY;
typedef struct termios SGTTYS;
#ifdef _LP64
typedef unsigned int chtype;
#else
typedef unsigned long chtype;
#endif
#include <term.h> // need for tparm
#else
#include <term.h> // need for tparm
#endif
#include <cctype>
#include <climits>
#include <cstdio> // need for printf
#include <cstdlib>
#include <cstring>
#include <iostream>
//----------------------------------------------------------------------
// class FOptiMove
//----------------------------------------------------------------------
#pragma pack(push)
#pragma pack(1)
class FOptiMove
{
public:
// Constructor
explicit FOptiMove (int = 0);
// Destructor
~FOptiMove();
// Accessors
const char* getClassName() const;
// Mutators
void setBaudRate (int);
void setTabStop (int);
void setTermSize (int, int);
int set_cursor_home (char[]);
int set_cursor_to_ll (char[]);
int set_carriage_return (char[]);
int set_tabular (char[]);
int set_back_tab (char[]);
int set_cursor_up (char[]);
int set_cursor_down (char[]);
int set_cursor_left (char[]);
int set_cursor_right (char[]);
int set_cursor_address (char[]);
int set_column_address (char[]);
int set_row_address (char[]);
int set_parm_up_cursor (char[]);
int set_parm_down_cursor (char[]);
int set_parm_left_cursor (char[]);
int set_parm_right_cursor (char[]);
int set_erase_chars (char[]);
int set_repeat_char (char[]);
int set_clr_bol (char[]);
int set_clr_eol (char[]);
void set_auto_left_margin (const bool&);
void set_eat_newline_glitch (const bool&);
// Methods
void check_boundaries (int&, int&, int&, int&);
char* moveCursor (int, int, int, int);
void printDurations();
private:
// Constant
static const std::size_t BUF_SIZE = 512;
// Typedefs
typedef unsigned char uChar;
typedef unsigned int uInt;
typedef struct
{
char* cap;
int duration;
int length;
} capability;
// Constants
static const int LONG_DURATION = INT_MAX;
// value for a long capability waiting time
static const int MOVE_LIMIT = 7;
// maximum character distance to avoid direct cursor addressing
// Methods
void calculateCharDuration();
int capDuration (char[], int);
int capDurationToLength (int);
int repeatedAppend (const capability&, volatile int, char*);
int relativeMove (char[], int, int, int, int);
int verticalMove (char[], int, int);
void downMove (char[], int&, int, int);
void upMove (char[], int&, int, int);
int horizontalMove (char[], int, int);
void rightMove (char[], int&, int, int);
void leftMove (char[], int&, int, int);
bool isWideMove (int, int, int, int);
bool isMethod0Faster (int&, int, int);
bool isMethod1Faster (int&, int, int, int, int);
bool isMethod2Faster (int&, int, int, int);
bool isMethod3Faster (int&, int, int);
bool isMethod4Faster (int&, int, int);
bool isMethod5Faster (int&, int, int, int);
void moveByMethod (int, int, int, int, int);
// Data Members
capability F_cursor_home;
capability F_carriage_return;
capability F_cursor_to_ll;
capability F_tab;
capability F_back_tab;
capability F_cursor_up;
capability F_cursor_down;
capability F_cursor_left;
capability F_cursor_right;
capability F_cursor_address;
capability F_column_address;
capability F_row_address;
capability F_parm_up_cursor;
capability F_parm_down_cursor;
capability F_parm_left_cursor;
capability F_parm_right_cursor;
capability F_erase_chars;
capability F_repeat_char;
capability F_clr_bol;
capability F_clr_eol;
bool automatic_left_margin;
bool eat_nl_glitch;
char move_buf[BUF_SIZE];
int char_duration;
int baudrate;
int tabstop;
int screen_width;
int screen_height;
};
#pragma pack(pop)
// FOptiMove inline functions
//----------------------------------------------------------------------
inline const char* FOptiMove::getClassName() const
{ return "FOptiMove"; }
//----------------------------------------------------------------------
inline void FOptiMove::set_auto_left_margin (const bool& bcap)
{ automatic_left_margin = bcap; }
//----------------------------------------------------------------------
inline void FOptiMove::set_eat_newline_glitch (const bool& bcap)
{ eat_nl_glitch = bcap; }
#endif // FOPTIMOVE_H