WinD.cpp

//
// Created by Admin on 11/12/2020.
//
#include <SDL2/SDL.h>
#include "WinD.h"
#include <iostream>
#include <fstream>
using namespace std;


WinD::WinD() {

}

/**
 * Initialize the SDL graphics engine
 *
 * @return Error value. 0 if no errors
 */
int WinD::initialize() {

    if( SDL_Init( SDL_INIT_VIDEO ) != 0 ) {
        cout << "SDL Init Error: " << SDL_GetError << endl;
        return -1;
    }

    //Create the window
    int dispCode = display();
    setIcon();
    return dispCode;
}

int WinD::setIcon() {

    string iconPath = "C:\\Users\\Admin\\CLionProjects\\GraphingCalculator\\icon.bmp";
    SDL_Surface* icon = SDL_LoadBMP(iconPath.c_str());
    SDL_SetWindowIcon(win, icon);
    SDL_FreeSurface(icon);
    return 0;
}

int WinD::display() {

    //Create Window
    win = SDL_CreateWindow("Graphing Calculator", 100, 100, width, height, SDL_WINDOW_SHOWN);
    if(win == nullptr){
        cout << "SDL_CreateWindow Error: " << SDL_GetError << endl;
        SDL_Quit();
        return -2;
    }

    //Create SDL renderer
    ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if(ren == nullptr){
        SDL_DestroyWindow(win);
        cout << "SDL_CreateRenderer Error: " << SDL_GetError << endl;
        SDL_Quit();
        return -3;
    }

    //Draw the background of the window
    drawBackground();

    return 0;
}

//Draw the background of the opened window gray
void WinD::drawBackground() {

    //Set the color of the background
    SDL_SetRenderDrawColor(ren, bkgColor, bkgColor, bkgColor, 255);

    //Clear the window to re-render with new color
    SDL_RenderClear(ren);

    //Re-render with new color
    SDL_RenderPresent(ren);

}

/**
 * Display a segment in the window
 *
 * @param posX X position to display segment in
 * @param posY Y position to display segment in
 * @param width Width of the segment
 * @param height Height of the segment
 * @param colors Array of colors (r, g, b)
 *
 * @return code The exit code of the function
 */

int WinD::displaySegment(int posX, int posY, int width, int height, int color[]) {

    /*int clearCode = SDL_RenderClear(ren);
    if(clearCode != 0){
        return -20;
    }*/

    int renderCode = SDL_SetRenderDrawColor(ren, color[0], color[1], color[2], 255);
    if(renderCode != 0) {
        return -21;
    }

    SDL_Rect* rect = new SDL_Rect();
    rect->x = posX;
    rect->y = posY;
    rect->w = width;
    rect->h = height;

    int fillCode = SDL_RenderFillRect(ren, rect);
    if(fillCode != 0){
        return -22;
    }

    SDL_RenderPresent(ren);

    cout << "drew" << endl;
    delete rect;
    //TODO Delete later
    //SDL_Delay(50);
    //windowClose();

    return 0;
}

//Draw a line between two points
void WinD::drawLine(int x1, int y1, int x2, int y2, int colors[]){

    SDL_SetRenderDrawColor(ren, colors[0], colors[1], colors[2], 255);
    SDL_RenderDrawLine(ren, x1, y1, x2, y2);
    SDL_RenderPresent(ren);
}


//Close the window
void WinD::windowClose() {

    SDL_DestroyRenderer(ren);
    SDL_DestroyWindow(win);
    SDL_Quit();

}