colour_table

#include <stdlib.h>
#include "SDL/SDL.h"
#include <string.h>

#define TEXTFILE "txtdata.txt"
#define WIDTH 500
#define HIGHT 190
#define NOCOLOURS 949
SDL_Surface *screen;
/********************************************/


void window()
/***  makes a window using surface screen ***/
{
    screen = SDL_SetVideoMode(WIDTH, HIGHT, 16, SDL_SWSURFACE);
    SDL_WM_SetCaption("circle","circle");
    if ( screen == NULL ) {
        fprintf(stderr, "Unable to set the video mode: %s\n", SDL_GetError());
        exit(1);
    }
}
/*********************/

int read_data(char names[NOCOLOURS][100],char colours[NOCOLOURS][100],int maxlength)
/***** reads data from file "TEXTFILE" *****/
{
int x,y;
char c;
FILE *stream;

    stream = fopen (TEXTFILE, "r");

    for(x=0;x<maxlength;x++){
        for(y=0;y<100;y++){
            c=getc(stream);
            if(c=='#')
                {break;}
            if(c==EOF)
                {return(0);}
            names[x][y]=c;
            }
        for(y=0;y<100;y++){
            c=getc(stream);
            if(c==EOF)
                {return(0);}
            colours[x][y]=c;
            if(c=='\n')
                {break;}
            }
        }

}
/***************************************/
int convert(char colours[NOCOLOURS][100],unsigned int colourdata[NOCOLOURS],int maxlength)
/**** turn text rgb data into real numbers ****/
{
 int x;
    for(x=0;x<maxlength;x++){
            sscanf(colours[x],"%x",&colourdata[x]);
    }

}
/******************************************************/
void draw(int xco,int wit,int yco,int hig,Uint32 colour)
    /**** draw a square on the screen *****/
{
 SDL_Rect dest;

    dest.x = xco;
    dest.y = yco;
    dest.w = wit;
    dest.h = hig;

    SDL_FillRect(screen, &dest, colour);
}
/*************************************************/
int convert_RGB(unsigned int colourdata, unsigned int *red,
             unsigned int *green, unsigned int *blue)
{
    *blue=colourdata & 255;
    *green=(colourdata >>8)&255;
    *red =(colourdata >>16)&255;
}
/**************************************************/
int createsplashscreen(unsigned int colourdata[NOCOLOURS],int maxcolours)
/***** create screen with all the colours on it *******/
 {unsigned int red,green,blue;
 int s,y,x;
 Uint32 colour;
    for(s=0;s<maxcolours;s++){

        convert_RGB(colourdata[s], &red,&green, &blue);
        y=s/50;
        x=s%50;
        colour=SDL_MapRGB(screen->format, red, green, blue);
        draw(x*10,10,y*10,10,colour);

    }
    SDL_Flip(screen);
}
/************************************************/
void get_input(char names[NOCOLOURS][100], unsigned int colourdata[1000])
{
SDL_Event test_event;
SDL_PumpEvents();
Uint8* KEYS = SDL_GetKeyState(NULL);
int Xloc,Yloc,XSqr,YSqr;
int nocol;
    if (KEYS[SDLK_ESCAPE])
    {
        exit(0);}

    while(SDL_PollEvent(&test_event)) {
    if(test_event.type==SDL_QUIT) {exit(0);}
    }
    if(SDL_GetMouseState(&Xloc, &Yloc) == SDL_BUTTON(1)){
        XSqr=Xloc/10;
        YSqr=Yloc/10;
        nocol=XSqr+YSqr*50;
        fill_screen(names, colourdata,nocol);
    }

}
/************************************************/
int fill_screen(char names[NOCOLOURS][100], unsigned int colourdata[NOCOLOURS],int colourchoice)
{
 unsigned int red, green, blue;
 Uint32 colour;
 char command[200];
    convert_RGB(colourdata[colourchoice], &red,&green, &blue);
    colour=SDL_MapRGB(screen->format, red, green, blue);
    draw(0,WIDTH,0,HIGHT,colour);
    SDL_Flip(screen);
    sprintf(command,"espeak \"%s\"",names[colourchoice]);
    system(command);
    printf("%d: %s r;%d g;%d b;%d\n",colourchoice,names[colourchoice],red,green,blue);
    createsplashscreen(colourdata,NOCOLOURS);
}
/************************************************/
int main()
{
 char names[NOCOLOURS][100];
    //contains names of colours
 char colours[NOCOLOURS][100];
    //contains colourdata in HEX
 unsigned int colourdata[NOCOLOURS];
    //contains colourdata in RGB

 int x,y;
    read_data(names,colours,NOCOLOURS);
    convert(colours,colourdata,NOCOLOURS);
    for(x=0;x<NOCOLOURS;x++){
        printf(names[x]);
        printf("%x\n",colourdata[x]);
    }
    window();
    createsplashscreen(colourdata,NOCOLOURS);

    while(1){
        get_input(names,  colourdata);
        usleep(10000);
        }

}