cs-lab34_Var7/LABA1.cpp

#include <iostream>
#include <string>
#include <vector>
#include "histogram.h" 
#include "text.h" 
#include <curl/curl.h>

using namespace std;


void svg_begin(double width, double height) {
    cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
    cout << "<svg ";
    cout << "width='" << width << "' ";
    cout << "height='" << height << "' ";
    cout << "viewBox='0 0 " << width << " " << height << "' ";
    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
}

void svg_text(double left, double baseline, string text) {
    cout << "<text x='" << left << "' y='" << baseline << "'>" << text <<"</text>\n";
}

void svg_rect(double x, double y, double width, double height, string stroke = "yellow", string fill = "red") {
    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' stroke='" << stroke << "' height='" << height << "' fill='" << fill << "' />\n";
}

void svg_end() {
    cout << "</svg>\n";
}

void show_histogram_svg(const vector<double>& marks, const vector<double>& chart) {
    const auto IMAGE_WIDTH = 400;
    const auto IMAGE_HEIGHT = 300;
    const auto TEXT_LEFT = 20;
    const auto TEXT_BASELINE = 20;
    const auto TEXT_WIDTH = 50;
    const auto BIN_HEIGHT = 30;
    const auto BLOCK_WIDTH = 10;
    double min = 0, max = 0, scale = 1, average = 0, sum = 0;
    int maxlen = IMAGE_WIDTH - TEXT_WIDTH;
    svg_begin(4000, 300);
    double top = 0;
    for (double x : chart) {
        sum += x;
    }
    average = sum / chart.size();
    FindMinMax(chart, min, max);
    scale = max * BLOCK_WIDTH / maxlen;
    for (double bin : chart) {
        double bin_width = BLOCK_WIDTH * bin;
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string((int)bin));
        if (bin > average) {
            svg_rect(TEXT_WIDTH, top, bin_width / scale, BIN_HEIGHT, "yellow", "red");
        }
        else {
            svg_rect(TEXT_WIDTH, top, bin_width / scale, BIN_HEIGHT, "yellow", "green");
        }
        top += BIN_HEIGHT;
    }
    svg_end();
}


struct Input {
    vector <double> marks;
    int NCharts = 0;
};

Input input_data() {
    Input in;
    int VecSize = 0;
    cin >> VecSize;
    in.marks.resize(VecSize);
    for (int i = 0; i < VecSize; i++) {
        cin >> in.marks[i];
    }
    cin >> in.NCharts;
    return in;
};

int main(int argc, char* argv[])
{
    if (argc > 1) {
        for (int i = 0; i < argc; i++) {
            cout << "argv[" << i << "] = " << argv[i] << endl;
        }
        return 0;
    }
    curl_global_init(CURL_GLOBAL_ALL);
    Input in = input_data();
    vector <double> chart = MakeHistogram(in.marks, in.NCharts);
    //show_histogram_text(in.marks, chart);
    show_histogram_svg(in.marks, chart);
}