Пункт 5: Формат SVG

main.cpp

@@ -2,6 +2,7 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 
 using namespace std;
 
@@ -35,5 +36,5 @@ int main()
     size_t max_count;
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.bin_count, max_count);
+    show_histogram_svg(bins);
 }

svg.cpp

@@ -0,0 +1,54 @@
+#include "svg.h"
+#include <string>
+using namespace std;
+
+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 << "'>" << text << "</text>";
+}
+
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black")
+{
+    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(400, 300);
+    double top = 0;
+
+    for (size_t bin : bins) {
+        const double bin_width = BLOCK_WIDTH * bin;
+        if(bin_width> IMAGE_WIDTH) {
+            const double bin_width= IMAGE_WIDTH - TEXT_WIDTH;
+        }
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "green");
+        top += BIN_HEIGHT;
+    }
+
+    //svg_text(20, 20, to_string(bins[0]));
+    //svg_rect(50, 0, bins[0] * 10, 30);
+    svg_end();
+}
+

svg.h

@@ -0,0 +1,8 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <iostream>
+#include <vector>
+
+void show_histogram_svg(const std::vector<size_t> &bins);
+
+#endif // SVG_H_INCLUDED

unittest.cpp

@@ -2,7 +2,7 @@
 #define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "doctest.h"
 #include "histogram_internal.h"
-/*
+
 TEST_CASE("distinct positive numbers") {
     double min = 0;
     double max = 0;
@@ -10,7 +10,6 @@ TEST_CASE("distinct positive numbers") {
     CHECK(min == 1);
     CHECK(max == 2);
 }
-*/
 TEST_CASE("distinct negative numbers")
 {
     double min = 0;