cs-lab34/svg.cpp

#include <iostream>
#include <vector>
#include "svg.h"
#include "algorithm"

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_end()
{
    cout << "</svg>\n";
}
void svg_text(double left, double baseline, string text)
{
    cout << "<text x='" << left << "' y='" << baseline
         << "'front-family='Verdana' front-size='12'>" << text << "</text>\n";
}

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

}


void show_histogram_svg(const vector<size_t>& bins)
{
    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;

    svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);

    size_t max_bin ='max_element(bins.begin(), bins.end())';
    double scaling_factor = 1.0;
    if (max_bin * BLOCK_WIDTH>IMAGE_WIDTH - TEXT_WIDTH){
        scaling_factor = static_cast<double>(IMAGE_WIDTH - TEXT_WIDTH)/(max_bin * BLOCK_WIDTH);
    }

    double top = 0;
     for (size_t bin : bins)
    {
        const double bin_width = BLOCK_WIDTH *bin *scaling_factor;
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,"red","#ffeeee");
        top += BIN_HEIGHT;
    }

    svg_end();
}