finalcut/examples/opti-move.cpp

209 lines
5.8 KiB
C++

/************************************************************************
* opti-move.cpp - Tests the cursor movement optimization *
* *
* This file is part of the Final Cut widget toolkit *
* *
* Copyright 2016-2017 Markus Gans *
* *
* The Final Cut is free software; you can redistribute it and/or modify *
* it under the terms of the GNU 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
************************************************************************/
#include <iomanip>
#include <string>
#include <final/fapplication.h>
#include <final/fvterm.h>
// global FVTerm object
static FVTerm* terminal;
// function prototype
bool keyPressed();
void term_boundaries (int&, int&);
void move (int, int, int, int);
//----------------------------------------------------------------------
// functions
//----------------------------------------------------------------------
bool keyPressed()
{
// Waiting for keypress
struct termios save, t;
bool ret;
std::cout << "\nPress any key to continue...";
fflush(stdout);
tcgetattr (STDIN_FILENO, &save);
t = save;
t.c_lflag &= uInt(~(ICANON | ECHO));
tcsetattr (STDIN_FILENO, TCSANOW, &t);
if ( std::getchar() != EOF )
ret = true;
else
ret = false;
tcsetattr (STDIN_FILENO, TCSADRAIN, &save);
return ret;
}
//----------------------------------------------------------------------
void term_boundaries (int& x, int& y)
{
// checks and corrects the terminal boundaries
int term_width = terminal->getColumnNumber();
int term_height = terminal->getLineNumber();
if ( x < 0 )
x = 0;
if ( y < 0 )
y = 0;
if ( x >= term_width )
{
y += x / term_width;
x %= term_width;
}
if ( y >= term_height )
y = term_height - 1;
}
//----------------------------------------------------------------------
void move (int xold, int yold, int xnew, int ynew)
{
// prints the cursor move escape sequence
std::string sequence;
char* buffer;
char from[10], to[10], byte[20];
uInt len;
term_boundaries(xold, yold);
term_boundaries(xnew, ynew);
snprintf (from, sizeof(from), "(%d;%d)", xold, yold);
snprintf (to, sizeof(to), "(%d;%d)", xnew, ynew);
std::cout << std::right << std::setw(10) << from
<< " -> "
<< std::left << std::setw(10) << to
<< " ";
// get the move string
buffer = terminal->moveCursor (xold, yold, xnew, ynew);
len = uInt(std::strlen(buffer));
for (uInt i = 0; i < len; i++)
{
switch ( buffer[i] )
{
case 0x08:
sequence += "BS ";
break;
case 0x09:
sequence += "TAB ";
break;
case 0x0a:
sequence += "LF ";
break;
case 0x0d:
sequence += "CR ";
break;
case 0x1b:
sequence += "Esc ";
break;
default:
sequence += buffer[i];
sequence += ' ';
}
}
std::cout << std::setw(21) << sequence << " ";
if ( len <= 1 )
snprintf (byte, sizeof(byte), "%d byte ", len);
else
snprintf (byte, sizeof(byte), "%d bytes", len);
std::cout << std::right << std::setw(10) << byte << "\r\n";
}
//----------------------------------------------------------------------
// main part
//----------------------------------------------------------------------
int main (int argc, char* argv[])
{
int xmax, ymax;
// Create the application object
FApplication app(argc, argv);
// Create a FVTerm object as virtual terminal
terminal = new FVTerm(&app);
xmax = terminal->getColumnNumber() - 1;
ymax = terminal->getLineNumber() - 1;
FString line(xmax + 1, '-');
// Place the cursor in the upper left corner
terminal->setTermXY(0,0);
// Reset all terminal attributes
terminal->setNormal();
// Clear the screen
terminal->clearArea();
// Show the determined terminal name and text resolution
std::cout << "Terminal: " << terminal->getTermType() << "\r\n";
std::cout << " Columns: 0.." << xmax << "\r\n";
std::cout << " Lines: 0.." << ymax << "\r\n";
// Show the escape sequences for the following cursor movements
std::cout << std::setw(38) << "Cursor move\r\n";
std::cout << " (From) -> (To) ";
std::cout << "escape sequence ";
std::cout << "Length\r\n";
std::cout << line;
move (5, 12, 0, 0);
move (5, ymax, 5, 0);
move (xmax, 1, 0, 1);
move (xmax, 1, 0, 2);
move (xmax + 1, 1, 0, 2);
move (9, 4, 10, 4);
move (10, 4, 9, 4);
move (9, 4, 11, 4);
move (11, 4, 9, 4);
move (1, 0, 8, 0);
move (16, 0, 16, 1);
move (16, 1, 16, 0);
move (16, 0, 16, 2);
move (16, 2, 16, 0);
move (3, 2, xmax, 2);
move (5, 5, xmax - 5, ymax - 5);
// Waiting for keypress
keyPressed();
// Show terminal speed and milliseconds for all cursor movement sequence
std::cout << "\r" << line;
terminal->printMoveDurations();
// Waiting for keypress
keyPressed();
}