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| #include "stdafx.h"
#define _ _STDC_WANT_SECURE_LIB_ _ 1
#include <iostream>
#include <stdlib.h>
#include <string>
#include <assert.h>
using namespace std;
class Screen {
public :
Screen(int = 8, int = 40, char = '#');
inline int remainingSpace();
inline int row();
int isEqual(Screen&);
inline Screen& down();
inline Screen& forward();
inline Screen& move(int, int);
Screen& home(){move (1, 1); return *this;}
Screen& checkRange(int, int);
Screen& copy(Screen&);
Screen& display();
Screen& lineX(int, int, int, char);
Screen& reSize(int, int, char);
Screen& set(char);
Screen& set(char*);
private :
short height, width;
char *cursor, *screen;
};
Screen::Screen(int high, int wid, char bkground){
int sz = high * wid;
height = high;
width = wid;
cursor = screen = new char[sz + 1];
assert (cursor !=0);
char *ptr = screen;
char *endptr = screen + sz;
while (ptr != endptr) *ptr++ = bkground;
*ptr = '\0';
}
inline int Screen::remainingSpace(){
int sz = width*height;
return (screen + sz - cursor - 1);
}
inline int Screen::row(){
int pos = cursor - screen + 1;
return (pos + width - 1) / width;
}
int Screen::isEqual(Screen &s){
if(width != s.width || height != s.height)
return 0;
char *p = screen;
char *q = s.screen;
if (p == q) return 1;
while (*p && *p++ == *q++);
if (*p)
return 0;
return 1;
}
inline Screen& Screen::down(){
const char BELL = '\007';
if (row() == height)
std::cout.put (BELL);
else
cursor += width;
return *this;
}
inline Screen& Screen::forward(){
++cursor;
if (*cursor == '\0')
home ();
return *this;
}
inline Screen& Screen::move(int r, int c){
checkRange (r, c);
int row = (r-1)*width;
cursor = screen + row + c - 1;
return *this;
}
Screen& Screen::checkRange (int row, int col){
if (row < 1 || row > height ||col < 1 || col > width){
std::cerr<< "Screen coordinates ( "<<row<<", "<<col<<" ) out of bounds."<<endl;
exit (-1);
}
return *this;
}
Screen& Screen::copy(Screen &s){//FONCTION COPY
delete screen;
height = s.height;
width = s.width;
screen = cursor = new char[ height * width + 1];
assert (screen != 0);
strcpy_s (screen, sizeof(s.screen), s.screen);
return *this;
}
Screen& Screen::display(){
for(int ix = 0; ix <height; ix++){
std::cout<<endl;
int offset = width * ix;
for (int j = 0; j<width; j++){
char*p = screen + offset + j;
std::cout.put(*p);
}
}
return *this;
}
Screen& Screen::lineX(int row, int col, int len, char ch){
move (row, col);
for(int ix = 0; ix<len; ix++)
set(ch).forward();
return *this;
}
Screen& Screen::reSize(int h, int w, char bkground){
Screen *ps = new Screen (h, w, bkground);
assert (ps !=0);
char *pNew = ps->screen;
if (screen){
char *pOld = screen;
while (*pOld && *pNew)
*pNew++ = *pOld++;
delete screen;
}
*this = *ps;
return *this;
}
Screen& Screen::set(char*s){
int space = remainingSpace();
int len = strlen(s);
if(space<len){
std::cerr<<"Screen : warning : truncation : "<<endl<<"space : "<<space<<"string lenght : "<<len<<endl;
len = space;
}
for(int ix = 0; ix<len; ++ix)
*cursor++ = *s++;
return *this;
}
Screen& Screen::set(char ch){
if(ch=='\0')
cerr<<"Screen : warning : "<<endl<<"null character (ignored)."<<endl;
else *cursor = ch;
return *this;
}
Screen& lineY(Screen& s, int row, int col, int len, char ch){
s.move(row,col);
for(int ix = 0; ix<len; ix++)
s.set(ch).down();
return s;
} |
