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benbek/Calendar.c

Created December 9, 2016 21:59
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Appointments calendar homework, 2004
Raw
Calendar.c
#include <stdio.h>
#include <conio.h>
#include <malloc.h>
#include <stdlib.h>
#include <string.h>
#include <dos.h>
#include <graphics.h>
typedef struct Meetings {
int Hour;
char *Name;
char *Subject;
struct Meetings *Next;
struct Meetings *Prev;
}Meets;
typedef struct Days {
int Day;
struct Days *Next;
struct Days *Prev;
Meets *MeetHead;
}Days;
typedef struct Button {
int LX;
int LY;
int RX;
int RY;
char Msg[31];
int XMsg;
int YMsg;
}Button;
Button Coordinats1[5]={ {80,90,220,130,"Add a meeting",97,107} , {250,90,390,130,"Cancel a meeting",257,107} , {420,90,560,130,"Update a meeting",427,107} ,
{250,210,390,250,"Print all",284,227} , {250,330,390,370,"Exit",305,347}
};
Button Coordinats2[3]={ {80,90,240,130,"Change the hour",95,107} , {80,210,240,250,"Change the date",97,227} , {80,330,360,370,"Free space for the new meeting",87,347}
};
Button Coordinats3[4]={ {80,90,220,130,"Delete by date",94,107} , {250,210,390,250,"Delete by name",265,227} , {420,330,610,370,"Delete by time interval",425,347} ,
{80,330,220,370,"Back to menu",100,347}
};
Button Coordinats4[4]={ {250,70,390,110,"Change the date",257,87} , {250,180,390,220,"Change the time",257,197} , {250,290,390,330,"Change the name",257,307} ,
{250,400,420,440,"Change the subject",250,417}
};
Button *Menus[4]={ Coordinats1,Coordinats2,Coordinats3,Coordinats4 };
//int GraphDriver=DETECT,GraphMode,ErrorCode,MaxColors;
Days *Head;
void InitMouse();
void ShowMouse();
void HideMouse();
int MouseHit();
void MousePos(int *,int *);
void InitGraphMode();
void ShowMenu(Button *,int);
void ShowCalendar();
int MouseChoice(int,int);
int WhichButton(int,int,Button *,int);
void ButtonNewColor(Button );
void ButtonOldColor(Button );
void Cases(int);
void AddAMeeting();
void CancelAMeeting();
void UpdateAMeeting();
void GetDetails(int);
int GetHour();
int GetDay();
void DeleteByDate();
void DeleteByName();
void DeleteByInterval();
Days *InsertMeeting(int,int,char *,char *);
Days *InsertDay();
Meets *InsertMeet();
void Sort(Days *);
Days *SearchSortDays(int);
Meets *SearchSortMeets(Meets *,int);
void SearchByName(char *,Days **,Meets **);
Days *PointDay(int);
Meets *MeetUnable(int,int);
Meets *DayFull(Days *);
Days *ChangeMeetTime(int,int,char *,char *);
Days *ChangeMeetDate(int,int,char *,char *);
void UpdateDay(int,Meets *);
void UpdateTime(int,Meets *);
void UpdateName(Meets *);
void UpdateSubject(Meets *);
void DeleteMeet(Days *,Meets *);
void DeleteDay(Days *);
void DeleteMeetings(Days *,int,int);
void FreeMeet(Meets *);
void FreeDay(Days *);
void FreeAll();
void PrintDay(int,int,int,int);
void PrintAll();
void main()
{
int Choice=0;
clrscr();
InitGraphMode();
InitMouse();
ShowMouse();
while (Choice!=4)
{
ShowMenu(Menus[0],5);
Choice=MouseChoice(0,5);
Cases(Choice);
}
HideMouse();
closegraph();
FreeAll();
}
void InitMouse()
{
union REGS i,o;
i.x.ax=0;
int86(0x33,&i,&o);
if (o.x.ax==0)
{
printf("No mouse.");
getch();
exit(1);
}
}
void ShowMouse()
{
union REGS i,o;
i.x.ax=1;
int86(0x33,&i,&o);
}
void HideMouse()
{
union REGS i,o;
i.x.ax=2;
int86(0x33,&i,&o);
}
int MouseHit()
{
union REGS i,o;
i.x.ax=3;
int86(0x33,&i,&o);
return(o.x.bx&7);
}
void MousePos(int *PosX,int *PosY)
{
union REGS i,o;
i.x.ax=3;
int86(0x33,&i,&o);
*PosX=o.x.cx;
*PosY=o.x.dx;
}
void InitGraphMode()
{
initgraph(&GraphDriver,&GraphMode,"");
ErrorCode=graphresult();
if (ErrorCode!=grOk)
exit(1);
MaxColors=getmaxcolor()+1;
}
void ShowMenu(Button *Num,int Mis)
{
int i;
HideMouse();
setfillstyle(SOLID_FILL,3);
floodfill(1,1,3);
for (i=0;i<Mis;i++)
{
setcolor(9);
setlinestyle(SOLID_LINE,0,THICK_WIDTH);
setfillstyle(SOLID_FILL,9);
rectangle((Num+i)->LX,(Num+i)->LY,(Num+i)->RX,(Num+i)->RY);
floodfill(((Num+i)->LX)+5,((Num+i)->LY)+5,9);
setcolor(4);
rectangle((Num+i)->LX,(Num+i)->LY,(Num+i)->RX,(Num+i)->RY);
outtextxy((Num+i)->XMsg,(Num+i)->YMsg,(Num+i)->Msg);
}
ShowMouse();
}
void ButtonNewColor(Button Butt)
{
HideMouse();
setfillstyle(SOLID_FILL,4);
floodfill(Butt.LX+5,Butt.LY+5,4);
setcolor(9);
outtextxy(Butt.XMsg,Butt.YMsg,Butt.Msg);
ShowMouse();
}
void ButtonOldColor(Button Butt)
{
HideMouse();
setcolor(9);
setlinestyle(SOLID_LINE,0,THICK_WIDTH);
setfillstyle(SOLID_FILL,9);
rectangle(Butt.LX,Butt.LY,Butt.RX,Butt.RY);
floodfill(Butt.LX+5,Butt.LY+5,9);
setcolor(4);
rectangle(Butt.LX,Butt.LY,Butt.RX,Butt.RY);
outtextxy(Butt.XMsg,Butt.YMsg,Butt.Msg);
ShowMouse();
}
int WhichButton(int X,int Y,Button *Num,int Mis)
{
int i=0,f=0;
while (i<Mis && f==0)
{
if (X>=(Num+i)->LX && X<=(Num+i)->RX && Y>=(Num+i)->LY && Y<=(Num+i)->RY)
f=1;
i++;
}
if (f==1)
return (i-1);
else
return (-1); //Not on a button.
}
int MouseChoice(int Num,int Mis)
{
int flag=1; // The cursor is not on a button.
int X,Y,OldX,OldY,CH,OldCH;
while (flag!=0) // while the mouse isn't pressed.
{
MousePos(&X,&Y);
if (flag==1)
{
CH=WhichButton(X,Y,Menus[Num],Mis);
if (CH!=-1)
{
flag=2; // The cursor is on a button.
ButtonNewColor(*(Menus[Num]+CH));
}
}
else
if (flag==2)
{
CH=WhichButton(X,Y,Menus[Num],Mis);
if (CH!=OldCH)
{
ButtonOldColor(*(Menus[Num]+WhichButton(OldX,OldY,Menus[Num],Mis)));
if (CH==-1)
flag=1; // The cursor is not on a button.
}
}
OldX=X;
OldY=Y;
OldCH=CH;
if (MouseHit()!=0)
{
CH=WhichButton(X,Y,Menus[Num],Mis);
if (CH!=-1)
flag=0;
}
}
return(CH);
}
int GetDay()
{
int Day=0,X=0,Y=0,flag=0,MH,f1=0;
while (flag!=1 && f1!=1)
{
MH=MouseHit();
if (MH!=0)
{
MousePos(&X,&Y);
if (X>=75 && Y>=65)
{
X=(X-75)/50+1;
Y=(Y-65)/50+1;
}
if (X>=1 && X<=7 && Y>=1 && Y<=5)
Day=(Y-1)*7+X;
}
if (MH==2 && (Day>=1 && Day<=30) && (Day%7!=0))
{
PrintDay(Day,480,30,1);
Day=0;
}
if ((Day>=1 && Day<=30) && (Day%7!=0) && MH==1)
flag=1;
if (MH==1 && X>=5 && X<=103 && Y>=400 && Y<=440)
f1=1;
}
if (flag==1)
return (Day);
else
return(-1);
}
int GetHour()
{
int H,M,Hour;
fflush(stdin);
do
{
printf("Enter the hour (9-22): ");
scanf("%d",&H);
}
while(H<9 || H>22);
do
{
printf("Enter the minute (0-59): ");
scanf("%d",&M);
}
while(M<0 || M>59);
Hour=H*60+M;
return(Hour);
}
void Cases(int CH)
{
switch(CH) {
case 0:
AddAMeeting();
break;
case 1:
CancelAMeeting();
break;
case 2:
UpdateAMeeting();
break;
case 3:
PrintAll();
break;
default:
break;
}
}
void ShowCalendar()
{
int X,Y,NumDay=1;
char Day[2];
setcolor(1);
setlinestyle(SOLID_LINE,0,NORM_WIDTH);
setfillstyle(SOLID_FILL,1);
floodfill(1,1,1);
for (Y=65;Y<315;Y+=50)
for (X=75;X<425;X+=50)
{
setcolor(11);
rectangle(X,Y,X+50,Y+50);
if (NumDay%7!=0)
{
if (NumDay<=30)
setfillstyle(SOLID_FILL,11);
else
setfillstyle(BKSLASH_FILL,11);
floodfill(X+1,Y+1,11);
setcolor(0);
rectangle(X,Y,X+50,Y+50);
}
else
{
if (NumDay<=30)
setfillstyle(INTERLEAVE_FILL,11);
else
setfillstyle(BKSLASH_FILL,11);
floodfill(X+1,Y+1,11);
setcolor(0);
rectangle(X,Y,X+50,Y+50);
}
if (NumDay<=30)
{
strcpy(Day,itoa(NumDay,Day,10));
outtextxy(X+25,Y+25,Day);
NumDay=atoi(Day);
}
NumDay++;
}
setcolor(11);
setfillstyle(SOLID_FILL,11);
rectangle(5,400,103,440);
floodfill(6,401,11);
setcolor(0);
rectangle(5,400,103,440);
outtextxy(7,415,"Back to menu");
outtextxy(5,5,"Left button chooses a day.");
outtextxy(5,5+textheight("H")*2,"Right button prints all meeting on the chosen day.");
}
void AddAMeeting()
{
int Day;
cleardevice();
HideMouse();
ShowCalendar();
ShowMouse();
Day=GetDay();
if (Day!=-1)
{
HideMouse();
restorecrtmode();
GetDetails(Day);
setgraphmode(getgraphmode());
ShowMouse();
}
}
void GetDetails(int day)
{
int hour,Choice;
char subject[30],name[20],*PName=NULL,*PSubject=NULL;
Days *P;
hour=GetHour();
do
{
fflush(stdin);
printf("Enter the name: ");
gets(name);
}
while(strlen(name)==0);
PName=(char *)malloc(strlen(name)*sizeof(char)+1);
if (PName==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
strcpy(PName,name);
printf("Enter the subject of the meeting: ");
gets(subject);
PSubject=(char *)malloc(strlen(subject)*sizeof(char)+1);
if (PSubject==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
strcpy(PSubject,subject);
if (MeetUnable(day,hour)!=NULL)
{
printf("Unable to set up the meeting.");
getch();
setgraphmode(getgraphmode());
ShowMouse();
ShowMenu(Menus[1],3);
Choice=MouseChoice(1,3);
HideMouse();
restorecrtmode();
if (Choice==0)
P=ChangeMeetTime(day,hour,PName,PSubject);
else
if (Choice==1)
P=ChangeMeetDate(day,hour,PName,PSubject);
else
{
DeleteMeet(PointDay(day),MeetUnable(day,hour));
if (MeetUnable(day,hour)!=NULL)
DeleteMeet(PointDay(day),MeetUnable(day,hour));
P=InsertMeeting(day,hour,PName,PSubject);
}
}
else
P=InsertMeeting(day,hour,PName,PSubject);
if (P!=NULL)
Sort(P);
}
Days *InsertMeeting(int Day,int Hour,char *Name,char *Subject)
{
Days *p;
p=InsertDay();
p->Day=Day;
p->MeetHead=InsertMeet();
(p->MeetHead)->Hour=Hour;
(p->MeetHead)->Name=Name;
(p->MeetHead)->Subject=Subject;
(p->MeetHead)->Next=NULL;
(p->MeetHead)->Prev=NULL;
return(p);
}
Days *InsertDay()
{ //Allocates space for a new structure
Days *p;
p=(Days *)malloc(1*sizeof(Days));
if(p==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
return (p);
}
Meets *InsertMeet()
{ //Allocates space for a new structure
Meets *p;
p=(Meets *)malloc(1*sizeof(Meets));
if(p==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
return (p);
}
Days *DayBefore(Days *EndSearch)
{
Days *Pnt=Head;
while(Pnt->Next!=EndSearch)
Pnt=Pnt->Next;
return (Pnt);
}
Meets *MeetBefore(Meets *Pnt,Meets *EndSearch)
{
while(Pnt->Next!=EndSearch)
Pnt=Pnt->Next;
return (Pnt);
}
void Sort(Days *p)
{
Days *PntDays;
Meets *PntMeets;
if (Head==NULL)
{
Head=p;
Head->Next=NULL;
Head->Prev=NULL;
(Head->MeetHead)->Next=NULL;
(Head->MeetHead)->Prev=NULL;
}
else
{
PntDays=PointDay(p->Day);
if (PntDays==NULL)
{
PntDays=SearchSortDays(p->Day);
if (PntDays==Head)
{
p->Prev=NULL;
p->Next=PntDays;
PntDays->Prev=p;
Head=p;
}
else if(PntDays==NULL)
{
p->Next=NULL;
p->Prev=DayBefore(NULL);
(p->Prev)->Next=p;
}
else
{
p->Next=PntDays;
p->Prev=PntDays->Prev;
(PntDays->Prev)->Next=p;
PntDays->Prev=p;
}
}
else
{
PntMeets=SearchSortMeets(PntDays->MeetHead,(p->MeetHead)->Hour);
if (PntMeets==PntDays->MeetHead)
{
(p->MeetHead)->Prev=NULL;
(p->MeetHead)->Next=PntMeets;
//PntMeets->Prev=(p->MeetHead);
PntDays->MeetHead=p->MeetHead;
}
else if(PntMeets==NULL)
{
(p->MeetHead)->Next=NULL;
(p->MeetHead)->Prev=MeetBefore(PntDays->MeetHead,NULL);
((p->MeetHead)->Prev)->Next=p->MeetHead;
}
else
{
(p->MeetHead)->Next=PntMeets;
(p->MeetHead)->Prev=PntMeets->Prev;
(PntMeets->Prev)->Next=p->MeetHead;
PntMeets->Prev=p->MeetHead;
}
}
}
}
Days *SearchSortDays(int Day)
{
Days *Temp=Head;
while (Day>Temp->Day && Temp!=NULL)
Temp=Temp->Next;
return(Temp); //The pointer to the day after the day to be added
}
Meets *SearchSortMeets(Meets *p,int Hour)
{
Meets *Temp=p;
while (Hour>Temp->Hour && Temp!=NULL)
Temp=Temp->Next;
return(Temp); //The pointer to the meet after the meet to be added
}
void SearchByName(char *Name,Days **p1,Meets **p2)
{
int f=0,temp;
Days *PDay=Head;
Meets *PMeet;
while (PDay!=NULL && f==0)
{
PMeet=PDay->MeetHead;
while (PMeet!=NULL && f==0)
{
temp=strcmpi(PMeet->Name,Name);
if (temp==0)
f=1;
else
PMeet=PMeet->Next;
}
if (f==0)
PDay=PDay->Next;
}
if (f==1)
{
*p2=PMeet;
*p1=PDay;
}
else
{
*p1=NULL;
*p2=NULL;
}
}
Days *PointDay(int Day)
{
Days *Temp=Head;
while (Day!=Temp->Day && Temp!=NULL)
Temp=Temp->Next;
return(Temp); //The pointer to Day
}
Meets *PointMeet(Days *PDay,int Hour)
{
Meets *PMeet=PDay->MeetHead;
while (Hour!=PMeet->Hour && PMeet!=NULL)
PMeet=PMeet->Next;
return(PMeet); //The pointer to the meeting set on Hour
}
Meets *MeetUnable(int Day,int Hour)
{
Days *p1;
Meets *p2;
p1=PointDay(Day);
if(p1!=NULL)
{
p2=p1->MeetHead;
while (p2!=NULL && (abs(p2->Hour-Hour)>=30))
p2=p2->Next;
return(p2);
}
else
return (NULL);
}
Meets *DayFull(Days *P)
{
Meets *PMeet;
if (P!=NULL)
{
PMeet=P->MeetHead;
while (PMeet->Next!=NULL && ((PMeet->Next)->Hour-PMeet->Hour)<60)
PMeet=PMeet->Next;
return(PMeet);
}
else
return(Head->MeetHead-1); //addres that's diffrent than NULL
}
Days * ChangeMeetTime(int day,int hour,char *name,char *subject)
{
int H,M,timeMeet,f=1;
int Choice;
Meets *p;
do
{
timeMeet=GetHour();
p=MeetUnable(day,timeMeet);
if (p!=NULL)
{
printf("The meeting still cannot be set!");
getch();
setgraphmode(getgraphmode());
ShowMouse();
ShowMenu(Menus[1],3);
Choice=MouseChoice(1,3);
HideMouse();
restorecrtmode();
if (Choice==0)
return(ChangeMeetTime(day,hour,name,subject));
else
if (Choice==1)
return(ChangeMeetDate(day,hour,name,subject));
else
{
DeleteMeet(PointDay(day),MeetUnable(day,hour));
if (MeetUnable(day,hour)!=NULL)
DeleteMeet(PointDay(day),MeetUnable(day,hour));
return(InsertMeeting(day,hour,name,subject));
}
}
else
f=0;
}
while (f==1);
if (f==0)
return (InsertMeeting(day,timeMeet,name,subject));
else
return (NULL);
}
Days * ChangeMeetDate(int day,int hour,char *name,char *subject)
{
int Day1,f=0,Choice;
setgraphmode(getgraphmode());
do
{
ShowCalendar();
ShowMouse();
Day1=GetDay();
if (Day1==day)
{
HideMouse();
cleardevice();
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"You entered the same date!");
outtextxy(0,220+textheight("H"),"Press any key to choose a new date.");
getch();
settextstyle(0,0,0);
}
else
if (Day1==-1)
f=2;
else
{
if (MeetUnable(Day1,hour)!=NULL)
{
restorecrtmode();
printf("The meeting still cannot be set!");
getch();
setgraphmode(getgraphmode());
ShowMouse();
ShowMenu(Menus[1],3);
Choice=MouseChoice(1,3);
HideMouse();
restorecrtmode();
if (Choice==0)
return(ChangeMeetTime(Day1,hour,name,subject));
else
if (Choice==1)
return(ChangeMeetDate(Day1,hour,name,subject));
else
{
DeleteMeet(PointDay(Day1),MeetUnable(Day1,hour));
if (MeetUnable(Day1,hour)!=NULL)
DeleteMeet(PointDay(Day1),MeetUnable(Day1,hour));
return(InsertMeeting(Day1,hour,name,subject));
}
}
else
f=1;
}
}
while(f==0);
if (f!=1)
return (NULL);
else
return (InsertMeeting(Day1,hour,name,subject));
}
void CancelAMeeting()
{
int Choice;
HideMouse();
cleardevice();
if (Head!=NULL)
{
ShowMenu(Menus[2],4);
ShowMouse();
Choice=MouseChoice(2,4);
if (Choice==0)
DeleteByDate();
else
if (Choice==1)
DeleteByName();
else
if (Choice==2)
DeleteByInterval();
}
else
{
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings to delete at all!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
}
cleardevice();
ShowMouse();
}
void DeleteByDate()
{
int Day;
Days *Pnt;
HideMouse();
ShowCalendar();
ShowMouse();
Day=GetDay();
Pnt=PointDay(Day);
if (Pnt!=NULL)
DeleteDay(Pnt);
else
{
HideMouse();
cleardevice();
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings on this date!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
ShowMouse();
}
}
void DeleteByName()
{
char Name[20],ch,*PName;
Days *PDay;
Meets *PMeet;
int f=0;
HideMouse();
restorecrtmode();
do
{
do
{
fflush(stdin);
printf("Enter a name: ");
gets(Name);
}
while(strlen(Name)==0);
PName=(char *)malloc(strlen(Name)*sizeof(char));
strcpy(PName,Name);
SearchByName(PName,&PDay,&PMeet);
if (PMeet==NULL)
{
printf("The name wasn't found!\n");
do
{
fflush(stdin);
printf("Would you like to enter a new name? (Y/N): ");
scanf("%c",&ch);
}
while (ch!='y' && ch!='Y' && ch!='n' && ch!='N');
if (ch=='n' || ch=='N')
f=1;
}
else
{
do
{
DeleteMeet(PDay,PMeet);
SearchByName(PName,&PDay,&PMeet);
}
while(PDay!=NULL);
f=1;
}
}
while (f==0);
setgraphmode(getgraphmode());
ShowMouse();
}
void DeleteByInterval()
{
int Day,HourBeg,HourEnd,H,M;
Days *Pnt;
HideMouse();
ShowCalendar();
ShowMouse();
Day=GetDay();
Pnt=PointDay(Day);
if (Pnt!=NULL)
{
HideMouse();
restorecrtmode();
do
{
printf("Enter the hour you want to start deleting from (9-22): ");
scanf("%d",&H);
}
while (H<9 || H>22);
do
{
printf("Enter the minute you want to start deleting from (0-59): ");
scanf("%d",&M);
}
while (M<0 || M>59);
HourBeg=H*60+M;
do
{
printf("Enter the last hour you want to delete (9-22): ");
scanf("%d",&H);
}
while (H<9 || H>22);
do
{
printf("Enter the last minute you want to delete (0-59): ");
scanf("%d",&M);
}
while (M<0 || M>59);
HourEnd=H*60+M;
if (HourBeg>HourEnd)
{
H=HourBeg;
HourBeg=HourEnd;
HourEnd=H;
}
if ((MeetBefore(Pnt->MeetHead,NULL))->Hour<HourBeg)
{
setgraphmode(getgraphmode());
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings to delete on this period of time!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
ShowMouse();
}
else
{
DeleteMeetings(Pnt,HourBeg,HourEnd);
setgraphmode(getgraphmode());
ShowMouse();
}
}
else if (Day!=-1)
{
HideMouse();
cleardevice();
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings on this date!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
ShowMouse();
}
}
void UpdateAMeeting()
{
int Choice,Day,Hour,f=0;
char ch;
Meets *PMeet;
HideMouse();
if (Head!=NULL)
{
ShowCalendar();
ShowMouse();
Day=GetDay();
if (PointDay(Day)!=NULL)
{
HideMouse();
do
{
restorecrtmode();
Hour=GetHour();
PMeet=PointMeet(PointDay(Day),Hour);
if (PMeet!=NULL)
{
setgraphmode(getgraphmode());
ShowMenu(Menus[3],4);
ShowMouse();
Choice=MouseChoice(3,4);
switch (Choice) {
case 0:
UpdateDay(Day,PMeet);
break;
case 1:
UpdateTime(Day,PMeet);
break;
case 2:
UpdateName(PMeet);
break;
case 3:
UpdateSubject(PMeet);
break;
}
f=0;
}
else
{
printf("There is no meeting on this exect time!\n");
do
{
fflush(stdin);
printf("Would you like to enter a new time? (Y/N): ");
scanf("%c",&ch);
}
while (ch!='y' && ch!='Y' && ch!='n' && ch!='N');
if (ch=='y' || ch=='Y')
f=1;
else
f=0;
}
}
while (f==1);
}
else if (Day!=-1)
{
HideMouse();
cleardevice();
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings on this date!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
}
}
else
{
cleardevice();
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings to update at all!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
}
setgraphmode(getgraphmode());
ShowMouse();
}
void UpdateDay(int day,Meets *PMeet)
{
Days *P;
int Hour=PMeet->Hour;
char *Name=PMeet->Name,*Subject=PMeet->Subject;
restorecrtmode();
DeleteMeet(PointDay(day),PMeet);
P=ChangeMeetDate(day,Hour,Name,Subject);
if (P!=NULL)
Sort(P);
setgraphmode(getgraphmode());
}
void UpdateTime(int day,Meets *PMeet)
{
Days *P;
int Hour=PMeet->Hour;
char *Name=PMeet->Name,*Subject=PMeet->Subject;
restorecrtmode();
DeleteMeet(PointDay(day),PMeet);
P=ChangeMeetTime(day,Hour,Name,Subject);
if (P!=NULL)
Sort(P);
setgraphmode(getgraphmode());
}
void UpdateName(Meets *PMeet)
{
char name[20],*PName=NULL;
restorecrtmode();
clrscr();
do
{
fflush(stdin);
printf("Enter the new name: ");
gets(name);
}
while(strlen(name)==0);
PName=(char *)malloc(strlen(name)*sizeof(char)+1);
if (PName==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
strcpy(PName,name);
PMeet->Name=PName;
setgraphmode(getgraphmode());
}
void UpdateSubject(Meets *PMeet)
{
char subject[20],*PSubject=NULL;
restorecrtmode();
clrscr();
fflush(stdin);
printf("Enter the new subject: ");
gets(subject);
PSubject=(char *)malloc(strlen(subject)*sizeof(char)+1);
if (PSubject==NULL)
{
printf("Don't you think you're over-reacting?\n");
exit(1);
}
strcpy(PSubject,subject);
PMeet->Subject=PSubject;
setgraphmode(getgraphmode());
}
void DeleteMeet(Days *PDay,Meets *PMeet)
{
if (PMeet==PDay->MeetHead)
{
PDay->MeetHead=PMeet->Next;
if (PMeet->Next!=NULL)
(PMeet->Next)->Prev=NULL;
}
else
{
(PMeet->Prev)->Next=PMeet->Next;
if (PMeet->Next!=NULL)
(PMeet->Next)->Prev=PMeet->Prev;
}
FreeMeet(PMeet);
if (PDay->MeetHead==NULL)
DeleteDay(PDay);
}
void DeleteDay(Days *PDay)
{
if (PDay==Head)
{
Head=PDay->Next;
if (PDay->Next!=NULL)
(PDay->Next)->Prev=NULL;
}
else
{
(PDay->Prev)->Next=PDay->Next;
if (PDay->Next!=NULL)
(PDay->Next)->Prev=PDay->Prev;
}
FreeDay(PDay);
}
void DeleteMeetings(Days *PDay,int HourBeg,int HourEnd)
{
Meets *PMeet=PDay->MeetHead,*Temp;
while (PMeet->Hour<=HourEnd && PMeet!=NULL)
{
Temp=PMeet->Next;
if (PMeet->Hour<=HourEnd && PMeet->Hour>=HourBeg)
DeleteMeet(PDay,PMeet);
PMeet=Temp;
}
}
void FreeMeet(Meets *Pnt)
{
free(Pnt->Name);
free(Pnt->Subject);
free(Pnt);
}
void FreeDay(Days *Pnt)
{
Meets *p=Pnt->MeetHead,*Temp;
while (p!=NULL)
{
Temp=p->Next;
FreeMeet(p);
p=Temp;
}
free(Pnt);
}
void FreeAll()
{
Days *p=Head,*Temp;
while (p!=NULL)
{
Temp=p->Next;
FreeDay(p);
p=Temp;
}
free(Head);
}
void PrintDay(int Day,int X,int Y,int flag)
{
Meets *PMeet;
Days *PDay;
char H[3],M[3],day[3];
int X1,Y1=0;
if (flag==1)
{
cleardevice();
HideMouse();
ShowCalendar();
ShowMouse();
}
outtextxy(X,Y,"Meetings on day ");
outtextxy(X+textwidth("Meetings on day "),Y,itoa(Day,day,10));
PDay=PointDay(Day);
if (PDay!=NULL)
{
PMeet=PDay->MeetHead;
setcolor(9);
while (PMeet!=NULL)
{
strcpy(H,itoa((PMeet->Hour)/60,H,10));
strcpy(M,itoa((PMeet->Hour)%60,M,10));
if (strlen(H)==1)
X1=textwidth("H");
else
X1=textwidth("HH");
outtextxy(X,Y1+20+Y,H);
outtextxy(X1+X,Y1+20+Y,":");
X1+=textwidth(":");
outtextxy(X1+X,Y1+20+Y,M);
if (strlen(M)==1)
X1+=textwidth("HH");
else
X1+=textwidth("HHH");
outtextxy(X1+X,Y1+20+Y,PMeet->Name);
Y1+=textheight("H");
outtextxy(X1+X,Y1+20+Y,PMeet->Subject);
X1=0;
Y1+=textheight("H");
PMeet=PMeet->Next;
}
}
}
void PrintAll()
{
int X=30,Y=30;
Days *PDay=Head;
HideMouse();
cleardevice();
if (Head==NULL)
{
setcolor(3);
settextstyle(4,0,0);
outtextxy(0,220,"There are no meetings at all!");
outtextxy(0,220+textheight("H"),"Press any key to go back to the main menu.");
getch();
settextstyle(0,0,0);
cleardevice();
}
else
{
while (PDay!=NULL)
{
HideMouse();
PrintDay(PDay->Day,X,Y,0);
ShowMouse();
PDay=PDay->Next;
X+=150;
if (X>=600)
{
X=30;
Y+=220;
}
if(Y>250)
{
outtextxy(435,460,"Press any key to continue");
getch();
cleardevice();
X=30;
Y=30;
}
}
if (X!=30)
getch();
}
ShowMouse();
}
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