GraphicalEditor(mouseSupport)

/* --------------------------
    //Shaha Hassan
    // 31 Aug 2014
    Graphical Editor (mouse support)
It's basically the same program but with mouse support instead of command line type. :P

Graphical Editor(command line input, linux lovers??):
http://pastebin.com/vF9JveNs

IMPORTANT: Pls save my_mouse.cpp in the same directory if you want to run it.
Here's the link to my_mouse.cpp:
http://pastebin.com/jHtXgjwE
                -----------------------*/

#include<stdio.h>
#include<string.h>
#include<conio.h>
#define PIX 219
#include"my_mouse.cpp"
#define RES 8
#define MAX 30
#define OFFSETX 2
#define OFFSETY 5

void paint(int x, int y, char col, char bg);
int isValid(int x, int y);
void setf(char cl, int x, int y);
void show();
void setcolor(int pos, char &col);
int tonum(char c);
void getclick(int &mx, int &my, int &click);
int get2pts(int &x1, int&y1, int &x2, int &y2);
void init();
int initc();
void setstatus(char * msg);
void nomsg();
int trim(int&x, int&y);
void showtool(char t);


char canvas[MAX][MAX];
int r,c;
char col[16] = {"WWWWWWWWWBGCRMYW"};
char menu[46] = {"IIILLLLLLLLVVVVVLHHHHHLKKKKKLFFFFFLCCCCCLXXXXX"};


int main() {
    int flag=1, i, j, x1, y1, x2, y2;
    int mx, my, mc;
    char name[10], cmd='L', color='B';
    showtool(cmd);
    init();
    setcolor('W',color);
    while(flag) {
    getclick(mx, my, mc);

    if( mc ==1 ) {  //left click
        if(my == 0) { //colorselect
        if(mx<14) {
           setcolor(mx, color);
        }
        } else if( my == 1) { //tool select
        if(mx<47) {
            cmd = menu[mx];
            showtool(cmd);
        }

        switch(cmd) {
        case 'I':
            initc();
            nomsg();
            break;

        case 'C':
            for(i=0; i<r; i++) {
            memset(canvas[i],'W',c);
            }
            break;
        case 'L':
            setstatus("LtClk: Select a point");
            getclick(x1,y1, mc);
            if(trim(x1,y1)==-1) break;
            setf(color,x1, y1);
            break;
        case 'H':
            mc = get2pts(x1,y1,x2,y2);
            if(mc==-1) {
            nomsg();
            cmd = 'L';
            break;
            }
            if( (trim(x1,y1)==-1)||(trim(x2,y2)==-1)){
            nomsg();
            break;
            }
            for(i=x1; i<=x2; i++) {
            setf(color,i,y1);
            }
            break;
        case 'V':
            mc = get2pts(x1,y1,x2,y2);
            if(mc==-1) {
            nomsg();
            cmd ='L';
            break;
            }
            if( (trim(x1,y1)==-1)||(trim(x2,y2)==-1)){
            nomsg();
            break;
            }
            for(i=y1; i<=y2; i++) {
            setf(color,x1, i);
            }
            break;
        case 'K':   //rect
            mc = get2pts(x1,y1,x2,y2);
            if(mc==-1) {
            nomsg();
            cmd = 'L';
            break;
            }
            if( (trim(x1,y1)==-1)||(trim(x2,y2)==-1)){
            nomsg();
            break;
            }
            for(i=y1; i<=y2; i++) {
            for(j=x1; j<=x2; j++) {
                setf(color, j,i);
            }
            }
            break;
        case 'F':
            setstatus("LtClk: select point. \t RtClk:Abort\t\t\t");
            getclick(x1,y1,mc);
            if(mc==2) {
            nomsg();
            cmd = 'L';
            break;
            }
            if(trim(x1,y1)==-1){
            nomsg();
            break;
            }
            paint(x1,y1,color, canvas[y1][x1]);
            break;
        case 'X':
            flag = 0;
            break;
        }//switch
        nomsg();
        show();
        if(cmd=='X') break;
        }
    }//if left rt clk
    }//while
    return 0;
}
void showtool(char t){
    gotoxy(4,3);
    textcolor(WHITE);
    switch(t) {
    case 'I':
    printf("Select size of new canvas.");
    break;
    case 'V':
    printf("Vertical line: choose two points.");
    break;
    case 'H':
    printf("Horinzontal line: choose two points.");
    break;
    case 'L':
    printf("Pencil: click on canvas to color pixels");
    break;
    case 'K':
    printf("Rectangle: choose two points");
    break;
    case 'F':
    printf("Fill: click a point to flood fill");
    break;
    case 'C':
    printf("Cleared all");
    break;
    default:
    printf("                                         ");
    }
}

int trim(int &x, int &y) {
//offset, converts monitor [oints to row col of bitmap;
    x = (x-OFFSETX+1)/2;
    y = y-OFFSETY+1;
    if( (x<0) || (y<0) ||(x>c) ||(y>r)) {
    return -1;
    }
    return 0;
}

int get2pts(int &x1, int&y1, int &x2, int &y2){
    int mc;
    setstatus("Clk:Choose point1 \t RtClk:Abort\t\t.");
    getclick(x1,y1,mc);
    if(mc==2) {
    return -1;
    }
    setstatus("Clk:Choose point2 \t RtClk:Abort\t\t.");
    getclick(x2,y2,mc);
    if(mc==2) {
    return -1;
    }
    return 0;
}

void nomsg() {
    setstatus("                                            ");
}

int initc(){
//initialize canvas. I
    int x,y,cl;
    setstatus("select canvas size. RtClk:release");
    c= r =1;
    crsr.setpos(2,6);
    do{
    int x1, y1, x2, y2;
    do{
        x1=x2; y1=y2;
        crsr.getpos(x, y, cl);
        if(cl==2) break;
        x2 = x; y2 = y;
    }while( (x1==x2)&&(y1==y2) );
    if(cl==2) break;
    y = (y/RES -5);//2char width=1char hyt
    x = (x/RES -1)/2;
    r = y>0 ? y:1;
    c = x>0 ? x:1;
    r = r>MAX?MAX:r;
    c = c>MAX?MAX:c;
    init();
    show();
    }while(1);
    return 0;
}

void setstatus(char * s) {
//puts msg
    gotoxy(1,4);
    textcolor(WHITE);
    cprintf(s);
}

void setcolor(int pos, char &color) {
//sets color
    color = col[pos/2+9];
    textcolor(tonum(color));
    gotoxy(1, 3);
    cprintf("%c%c", PIX, PIX);
}

void init(){
//initializes display
    int i;
    clrscr();
    for(i=9; i<16; i++) {
    textcolor(i);
    cprintf("%c%c", PIX, PIX);
    }
    textcolor(WHITE);
    gotoxy(1,2);
    printf("New | dot | ver | hor | rec | fil | Clr | XXX ");

    for(i=0; i<MAX; i++) {
    memset(canvas[i],'W',MAX);
    }
    gotoxy(1,10);
}

void show() {
//displays canvas
    int i,j;
    for(i=0; i<r;i++) {
    gotoxy(OFFSETX,OFFSETY+i);
    for(j=0; j<c; j++) {
        textcolor(tonum(canvas[i][j]));
        cprintf("%c%c", PIX, PIX);
    }
    printf("\n");
    }
}

void setf(char cl, int x, int y){
//sets one pixel
    canvas[y][x] = cl;
}

void paint(int x, int y, char col, char bg) {
//fills regiion
    if(canvas[y][x]==bg) {
    setf(col,x,y);
    if(isValid(x+1,y)) paint(x+1,y,col,bg);
    if(isValid(x-1,y)) paint(x-1,y,col,bg);
    if(isValid(x,y+1)) paint(x,y+1,col,bg);
    if(isValid(x,y-1)) paint(x,y-1,col,bg);
    }
}

int isValid(int x, int y) {
    if( (x<0)||(y<0)||(x>=c)||(y>=r) ) return 0;
    return 1;
}

int tonum(char c){
    switch(c){
    case 'B': return 9;
    case 'G': return 10;
    case 'C': return 11;
    case 'R': return 12;
    case 'M': return 13;
    case 'Y': return 14;
    case 'W': return 15;
    }
    return 15;
}

void getclick(int &mx2,int &my2,int &mc1){
 //loops untill a click
 //returns lick's state
  int mx1, my1, mc2;
  do{
    do{
    crsr.getpos(mx1, my1, mc1);
    }while(mc1 == 0);
    mx1/=RES; my1/=RES;

    do{
    crsr.getpos(mx2, my2, mc2);
    }while(mc1 == mc2);
    mx2 /= RES; my2 /= RES;
    if( (mx1 == mx2) && (my1 == my2) ) { //clicked on the same spot
    break;
    }
  }while(1);
}