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#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <dir.h>
#define CLIP_ON 1
#define CLIP_OFF 0
char judul1[] = "Window 1";
char judul2[] = "Window dengan viewport on";
char judul3[] = "Window dengan viewport off";
int Maxx, Maxy;
void jendela(int, int, int, int, char *, int);
void CetakInformasiViewport( void );
void kotak( void );
void demo( void );
void TampilkanGambar( char* );
char *load(char *);
long UkuranFile(char *);
int main(void)
{
int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver, &gmode, "d:\\borlandc\\bgi");
errorcode = graphresult();
if(errorcode != grOk)
{
printf("Graphics Error: %s\n", grapherrormsg(errorcode));
printf("press any button to cancel:");
getch();
exit(1);
}
Maxx = getmaxx();
Maxy = getmaxy();
setcolor(getmaxcolor());
demo();
cleardevice();
closegraph();
return 0;
}
void kotak( void )
{
float xa, ya, xb, yb, xc, yc, xd, yd;
float xxa, yya, xxb, yyb, xxc, yyc, xxd, yyd;
float p, q;
int i, warna=0;
p = 0.95; q = 1.0-p;
xa = 2.0; xb = Maxx; xc = Maxx; xd = 2.0;
ya = 2.0; yb = 2.0; yc = Maxy; yd = Maxy;
for(i=0; i<50; i++)
{
setcolor( warna++);
if(warna > getmaxcolor()) warna = 0;
moveto(xa, ya);
lineto(xb, yb); lineto(xc, yc);
lineto(xd, yd);
lineto(xa, ya);
xxa = p*xa+q*xb;
yya = p*ya+q*yb;
xxb = p*xb+q*xc;
yyb = p*yb+q*yc;
xxc = p*xc+q*xd;
yyc = p*yc+q*yd;
xxd = p*xd+q*xa;
yyd = p*yd+q*ya;
xa = xxa; xb = xxb; xc = xxc; xd = xxd;
ya = yya; yb = yyb; yc = yyc; yd = yyd;
}
}
void demo( void )
{
unsigned ukuran;
struct viewporttype vp;
char NamaFile[] ="Gambar.aj";
char buffer[80];
char *BufferGambar;
char teks1[] = "Demonstrasi penyimpanan dan pemanggilan gambar";
char teks2[] = "Tekan sembarang kunci untuk menyimpan gambar";
char teks3[] = "Tekan sembarang kunci";
char teks4[] = "Untuk mengambil gambar";
int x1, y1, x2, y2;
outtextxy(0, 0, teks1);
outtextxy(0, textheight("H")+3, teks2);
x1 = Maxx/5; y1 = Maxy/5;
x2 = Maxx - x1; y2 = Maxy - y1;
jendela(x1, y1, x2, y2, judul2, CLIP_ON);
kotak();
getviewsettings(&vp);
getch();
simpan( vp.left, vp.top, vp.right, vp.bottom, NamaFile);
clearviewport();
setcolor(WHITE);
outtextxy(10, 10, teks3);
outtextxy(10, 20, teks4);
getch();
clearviewport();
BufferGambar = load(NamaFile);
TampilkanGambar(BufferGambar);
getch();
}
void jendela(int x1, int y1, int x2, int y2, char *judul, int clip)
{
int posx, posy;
setviewport(0,0, Maxx, Maxy, CLIP_ON);
setcolor(LIGHTGRAY);
setlinestyle(SOLID_LINE, 0, THICK_WIDTH);
rectangle(x1-2, y1-15, x2+2, y2+2);
setcolor(BLACK);
setlinestyle(SOLID_LINE, 0, NORM_WIDTH);
line(x1, y1-1, x2, y1-1);
setcolor(WHITE);
setfillstyle(SOLID_FILL, WHITE);
bar(x1, y1, x2, y2);
setfillstyle(SOLID_FILL, DARKGRAY);
bar(x1, y1-13, x2, y1-2);
posx = x1 + ((x2-x1)/2);
posy = y1-1-((y1-1) - (y1-14))/2;
settextstyle(DEFAULT_FONT, HORIZ_DIR, 1);
settextjustify(CENTER_TEXT, CENTER_TEXT);
setcolor(WHITE);
outtextxy(posx, posy, judul);
setviewport(x1, y1, x2, y2, clip);
settextjustify(LEFT_TEXT, TOP_TEXT);
}
simpan( int x1, int y1, int x2, int y2, char *NamaFile)
{
FILE *myfile;
unsigned char *buffer;
unsigned char *sem;
int i;
unsigned ukuran;
ukuran = imagesize(x1, y1, x2, y2);
buffer = (unsigned char *) malloc (ukuran);
sem = buffer;
if(buffer == NULL)
{
outtextxy(100, 100, "memori penuh");
return;
}
getimage(0, 0, x2 - x1, y2 - y1, buffer);
myfile = fopen(NamaFile, "wb");
for(i=0; i< ukuran; i++){
putc((*buffer), myfile);
buffer++;
}
free(sem);
fclose(myfile);
}
char *load(char *NamaFile)
{
FILE *myfile;
unsigned char *buffer;
long ukuran;
int i;
ukuran = UkuranFile( NamaFile );
buffer = (unsigned char *) malloc (ukuran);
if(buffer == NULL)
{
outtextxy(100, 100, "memori penuh");
return NULL;
}
myfile = fopen(NamaFile, "rb");
fread(buffer, ukuran, 1, myfile);
fclose(myfile);
return buffer;
}
long UkuranFile(char *NamaFile)
{
struct ffblk ffblk;
int selesai;
selesai = findfirst(NamaFile,&ffblk,0);
while (!selesai)
{
selesai = findnext(&ffblk);
}
return (ffblk.ff_fsize);
}
void TampilkanGambar( char *buffer)
{
putimage(0, 0, buffer, COPY_PUT);
free(buffer);
}
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