BitmapViewer (Mini Project)

[aruljothi]

#include<stdio.h>
#include<conio.h>
#include<dos.h>
#include<graphics.h>
#include<string.h>

/* mouse.h */

union REGS i,o;
void InitMouse();
void ShowMousePtr();
void GetMousePos(int*,int*,int*);
void HideMousePtr();
void RestoreMousePtr();
void RestrictMousePtr(int, int, int, int);
void SetMousePtr(int , int);


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[1], int x[1], int y[1])
{
   i.x.ax = 3;
   int86(0x33, &i, &o);
   button[0]=o.x.bx;
   x[0]=o.x.cx;
   y[0]=o.x.dx;
}

void RestoreMousePtr()
{
   i.x.ax = 7;
   i.x.cx = 0;
   i.x.dx = 79*8;
   int86(0x33, &i, &o);
   i.x.ax = 8;
   i.x.cx = 0;
   i.x.dx = 24*8;
   int86(0x33, &i, &o);
}

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);
}

void SetMousePtr(int x, int y)
{
   i.x.ax = 4;
   i.x.cx = x;
   i.x.dx = y;
   int86(0x33, &i, &o);
}
/*bmps.h*/

char *FileName;
FILE *fpImage;
long Size;
unsigned char *PixelArray;      //for Image pixel values

typedef struct tagBITMAPFILEHEADER
{
   char  bfType[2];   //Bmp File Type
   long bfSize;       //Total File Size
   int  bfReserved1;       //Not For Programmers
   int  bfReserved2;       //Not For Programmers
   long bfOffBits;         //Starting Position Of Data
};

typedef struct tagBITMAPINFOHEADER
{
   long biSize;      //Structure Size
   long biWidth;      //Bmp Width
   long biHeight;          //Bmp Height
   int  biPlanes;
   int  biBitCount;        //No Of Bits Used
   long biCompression;
   long biSizeImage;       //Bmp Total Size
   long biXPelsPerMeter;
   long biYPelsPerMeter;
   long biClrUsed;
   long biClrImportant;
};

typedef struct tagRGBQUAD
{
   unsigned char rgbBlue;   //Blue Color Value
   unsigned char rgbGreen; //Green Color Value
   unsigned char rgbRed;    //Red Color Value
   unsigned char rgbReserved ;    //Not For Programmer's Use
};

typedef struct tagBITMAPINFO
{
   struct tagBITMAPINFOHEADER bmiHeader;   //Bmp Information area
   struct tagRGBQUAD bmiColors[256];       //Color Table Entries
};


struct tagBITMAPFILEHEADER bmpFileHeader;
struct tagBITMAPINFO bmpInfo;

void SetGrayScale()               //SetGrayScale
{
int i;
struct palettetype pal;

getpalette(&pal);
for (i=0; i<pal.size; i++)
  setrgbpalette(pal.colors,i*4,i*4,i*4);
}
int Read(char *fname,char *oname)
{
  int i,j;

  FileName = (char*)malloc(strlen(fname)+1);
  strcpy(FileName,fname);
  //File Open
  if((fpImage=fopen(FileName,"rb"))==NULL)
  {
   strcpy(oname,"Sorry. File not found !");
   return 0;
  }
  //Read The BitMAP FILE HEADER
  if(fread(&bmpFileHeader,sizeof(struct
tagBITMAPFILEHEADER),1,fpImage)==0)
  {
   strcpy(oname,"File Is A Currupted One");
   return 0;
  }
  if(bmpFileHeader.bfType[0]!='B' || bmpFileHeader.bfType[1]!='M')
  {
   strcpy(oname,"File Is Not A Bitmap");
   return 0;
  }
  //Read The BITMAP INFO HEADER
  if(fread(&(bmpInfo.bmiHeader),sizeof(struct
tagBITMAPINFOHEADER),1,fpImage)==0)
  {
   strcpy(oname,"File Is A Corrupted One");
   return 0;
  }
  //Reading Color Table
  for(i = 0 ;i<256;i++)
   if(fread(&(bmpInfo.bmiColors),sizeof(struct
tagRGBQUAD),1,fpImage)==0)
   {
     strcpy(oname,"File Is A Currupted One");
     return -1;
   }
   strcpy(oname,"Image File is Loaded");
   return 1;
}
void Display(char fname[])
{
int i,j;
char temp[30];
  cleardevice();
  SetGrayScale();
  Read(fname,temp);
  PixelArray = (unsigned char*)malloc(sizeof(unsigned char*));
   for(i=0;i<bmpInfo.bmiHeader.biHeight;i++)
     for(j=0;j<bmpInfo.bmiHeader.biWidth;j++)
     {
      fread(PixelArray,1,1,fpImage)      ;
      putpixel(j,bmpInfo.bmiHeader.biHeight-i,*PixelArray/16);
    }
   fclose(fpImage);
}
char *Menus[]={" Load BMP File"," BMP Details"," View Image"," Exit
Program"};
int FileLoaded=0;
char *FileName;

void Box(int x1,int y1,int x2,int y2)
{
rectangle(x1,y1,x2,y2);
rectangle(x1+5,y1+5,x2-5,y2-5);
setfillstyle(SOLID_FILL, 7);
floodfill(x1+1,y2-4,8);
}

void TextBox(int x,int y,int len,char str[])
{
char ch;int curr=0;
setfillstyle(1,15);
bar(x, y-3, x+len, y+23);
setcolor(0);
rectangle(x+1, y-2, x+len-1, y+22);
settextstyle(6,0,1);
HideMousePtr();
do
{
  ch=getch();
  str[curr]=ch;
  if(curr*14 < len)
   if(isalpha(ch)||isdigit(ch) ||ch=='.')
    if(curr>=0)
      curr++;
  if(curr > 0 && ch==8)
  {
    curr--;
    bar(x, y-3, x+len, y+23);
    rectangle(x+1, y-2, x+len-1, y+22);
  }
  str[curr]='