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Displaying  Source Code(s)  
 

 
Drawing Pad - An Easy way to create circles,rectangles etc. (Mini Project)

--------------------------------------------------------------------------------

Description : An Easy way to create circles,rectangles etc.

#include<iostream.h>
#include<stdio.h>
#include<string.h>
#include<string.h>
#include<stdlib.h>
#include<graphics.h>
#include<conio.h>
#include<dos.h>
#include<fstream.h>

class mouse
{
union REGS i, o;
public:

mouse()
{
initmouse();
showmouseptr();
}

void initmouse()
{
i.x.ax=0;
int86(0x33,&i,&o);
}

void showmouseptr()
{
i.x.ax=1;
int86(0x33,&i,&o);
}

void hidemouseptr()
{
i.x.ax=2;
int86(0x33,&i,&o);
}

void getmousepos(int& button, int& x, int& y)
{
i.x.ax=3;
int86(0x33,&i,&o);
button=o.x.bx;
x=o.x.cx;
y=o.x.dx;
}

void restrictmouseptr(int x1, int y1, int x2, int y2)
{
i.x.ax=7;
i.x.cx=x1;
i.x.dx=x2;
int86(0x33,&i,&o);
i.x.ax=8;
i.x.cx=y1;
i.x.dx=y2;
int86(0x33,&i,&o);
}

};

class shapes
{
public:

virtual void draw()
{
}

virtual void save (ofstream &ft)
{
}

virtual void open(ifstream &fs)
{
}

};

class myline:public shapes
{
int sx,sy,ex,ey,color;
public:

myline()
{
}

myline(int x1,int y1,int x2,int y2,int clr)
{
sx=x1;
sy=y1;
ex=x2;
ey=y2;
color=clr;
}

void draw()
{
setcolor(color);
moveto(sx,sy);
lineto(ex,ey);
}

void save(ofstream &ft)
{
ft<<"L"<<"<BR>;
ft<<sx<<" "<<sy<<" "<<ex<<" "<<ey<<" "<<color<<"<BR>;
}

void open(ifstream &fs)
{
fs>>sx>>sy>>ex>>ey>>color;
}

};

class myrectangle:public shapes
{
int sx,sy,ex,ey,color;
public:

myrectangle()
{
}

myrectangle(int x1,int y1,int x2,int y2,int clr)
{
sx=x1;
sy=y1;
ex=x2;
ey=y2;
color=clr;
}

void draw()
{
setcolor(color);
rectangle(sx,sy,ex,ey);
}

void save(ofstream &ft)
{
ft<<"R"<<"<BR>;
ft<<sx<<" "<<sy<<" "<<ex<<" "<<ey<<" "<<color<<"<BR>;
}

void open(ifstream &fs)
{
fs>>sx>>sy>>ex>>ey>>color;
}

};

class mycircle:public shapes
{
int sx,sy,radius,color;
public:

mycircle()
{
}

mycircle(int x1,int y1,int r,int clr)
{
sx=x1;
sy=y1;
radius=r;
color=clr;
}

void draw()
{
setcolor(color);
circle(sx,sy,radius);
}

void save(ofstream &ft)
{
ft<<"C"<<"<BR>;
ft<<sx<<" "<<sy<<" "<<radius<<" "<<color<<"<BR>;
}

void open(ifstream &fs)
{
fs>>sx>>sy>>radius>>color;
}

};

struct node
{
void *obj;
node *link;
};

class objarray
{
node *head;
public:

objarray()
{
head =NULL;
}

void add(void *o)
{
node *temp =new node;
temp->obj=o;
temp->link=NULL;
if(head==NULL)
head=temp;
else
{
node *q;
q=head;
while(q->link!=NULL)
q=q->link;
q->link=temp;
}
}

void *getobj(int i)
{
node *q;
q=head;
for(int n=1; n<i;n++)
q=q->link;
return(q->obj);
}

int getcount()
{
int n=0;
node *q;
q=head;
while(q!=NULL)
{
q=q->link;
n++;
}
return n;
}

~objarray()
{
node *q;
q=head;
while(q!=NULL)
{
head=head->link;
delete q;
q=head;
}
}

};

void mainscreen()
{
cleardevice();
rectangle(0,0,639,479);
line(0,30,640,30);
char *names[]={"Clear","Open","Save","Line","Rect","Circ","Exit"};
int x,i;
for(x=5,i=0;x<=7*90;x+=90,i++)
{
setcolor(WHITE);
rectangle(x,5,x+70,25);
floodfill(x+1,6,WHITE);
settextstyle(1,0,3);
setcolor(BLACK);
outtextxy(x+10,0,names[i]);
}
}
void DisplayName(int ycor)
{
char *name[] = {"D","R","A","W","I","N","G"," ","P","A","D"};
int i;
settextjustify(1,1);
settextstyle(4,0,7);
for(i=0;i<11;i++)
{
setcolor(i+2);
outtextxy(40+i*45,ycor, name[i]);
}
}
music()
{
int i ;
float octave[7] = { 830.81, 846.83, 864.81, 674.61, 596, 420, 1046.94
} ;
for ( i = 0 ; i < 7 ; i++ )
{
sound ( octave[i] * 5 ) ;
delay ( 30 ) ;
}
nosound();
}

void Welcome()
{
char pattern[8] = {0x00, 0x70, 0x12, 0x27, 0x00, 0x27, 0x20, 0x70};
int i;

setfillpattern(pattern,BLUE);
for(i=0;i<=320;i++)
{
bar(320-i,240-i*0.75,320+i,240+i*0.75);
delay (0.3) ;
}
settextjustify(1,1);
DisplayName(100);
settextstyle(5,0,4);
outtextxy(100,300,"By :-");
settextstyle(7,0,6);
setcolor(11);
outtextxy(320,350,"Sandee Jain");
music();
delay(1000);
}

void main()
{
ifstream fs;
ofstream ft;
int gd= DETECT,gm;
initgraph(&gd,&gm,"C:\tc\bgi");
mainscreen();
music();
setviewport(1,31,638,478,1);
mouse m;
int button,x,y,flag=0;
int t,i,index;
int strptx,strpty,endptx,endpty;
objarray arr;
while(1)
{
button=0;
m.getmousepos(button,x,y);
if(((button &1)==1)&&(flag==0))
for(t=5,i=0;t<=7*90;t+=90,i++)
if(x>=t && x<=t+70 && y>=5 && y<=25)
{
index=i;
flag=1;
break;
}
int clmum=random(16);
int sx=random(638);
int sy=random(478);
int ex=random(638);
int ey=random(478);
int r=random(200);

switch(index)
{
case 0:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
clearviewport();
flag=0;
}
break;
case 1:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
fs.open("output.txt",ios::in);
shapes *ptr;
char a[2];
while(fs)
{
fs>>a;
if(strcmp(a,"L")==0)
{
myline *l=new myline();
l->open(fs);
arr.add(l);
}

if(strcmp(a,"R")==0)
{
myrectangle *r=new myrectangle();
r->open(fs);
arr.add(r);
}

if(strcmp(a,"C")==0)
{
mycircle *c=new mycircle();
c->open(fs);
arr.add(c);
}
}
fs.close();
int count=arr.getcount();
for(int i=1;i<=count;i++)
{
ptr=(shapes*)arr.getobj(i);
ptr->draw();
}
flag=0;
}
break;
case 2:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
ft.open("output.txt",ios::out);
int count=arr.getcount();
shapes *ptr;
for(i=1;i<=count;i++)
{
ptr=(shapes*)arr.getobj(i);
ptr->save(ft);
}
ft.close();
flag=0;
}
break;

case 3:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
setcolor(clmum);
moveto(sx,sy);
lineto(ex,ey);
myline *l=new myline(sx,sy,ex,ey,clmum);
if(l==NULL)
exit(1);
arr.add(l);
flag=0;
}
break;

case 4:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
setcolor(clmum);
rectangle(sx,sy,ex,ey);
myrectangle *r=new myrectangle(sx,sy,ex,ey,clmum);
if(r==NULL)
exit(1);
arr.add(r);
flag=0;
}
break;

case 5:
m.getmousepos(button,x,y);
if(((button &1)==0)&&(flag==1))
{
setcolor(clmum);
circle(sx,sy,r);
mycircle *c=new mycircle(sx,sy,r,clmum);
if(r==NULL)
exit(1);
arr.add(c);
flag=0;
}
break;
}
if(index==6)
break;
}
Welcome();
closegraph();
restorecrtmode();
}

 

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