From 49392a5f5b6b581517f147ea358ad617eab79bc9 Mon Sep 17 00:00:00 2001
From: MordashovSA <MordashovSA@mpei.ru>
Date: Mon, 5 May 2025 13:24:19 +0300
Subject: [PATCH] the fifth stage

---
 lab01.cbp    |  7 +++++
 main.cpp     |  4 ++-
 svg.cpp      | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 svg.h        | 10 +++++++
 unittest.cbp |  3 +++
 5 files changed, 97 insertions(+), 1 deletion(-)
 create mode 100644 svg.cpp
 create mode 100644 svg.h

diff --git a/lab01.cbp b/lab01.cbp
index 76beffa..6624bca 100644
--- a/lab01.cbp
+++ b/lab01.cbp
@@ -36,7 +36,14 @@
 		<Unit filename="histogram.h">
 			<Option target="&lt;{~None~}&gt;" />
 		</Unit>
+		<Unit filename="histogram_internal.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="text.cpp" />
 		<Unit filename="text.h">
 			<Option target="&lt;{~None~}&gt;" />
diff --git a/main.cpp b/main.cpp
index 82335ac..72dcc4b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,7 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 
 using namespace std;
 
@@ -36,6 +37,7 @@ int main()
 {
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.bin_count);
+    //show_histogram_text(bins, in.bin_count);
+    show_histogram_svg(bins);
     return 0;
 }
diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..16670af
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,74 @@
+#include "svg.h"
+
+using namespace std;
+
+void svg_begin(double width, double height)
+{
+    cout << "<?xml version='1.0' encoding='UTF-8'?>\n"
+         << "<svg "
+         << "width='" << width << "' "
+         << "height='" << height << "' "
+         << "viewBox='0 0 " << width << " " << height << "' "
+         << "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>";
+}
+
+void svg_rect(double x, double y, double width, double height, const string& stroke, const string& fill)
+{
+    cout << "<rect x='" << x
+         << "' y='" << y
+         << "' width='" << width
+         << "' height='" << height
+         << "' stroke='" << stroke
+         << "' fill='" << fill
+         << "' />\n";
+}
+
+void svg_end()
+{
+    cout << "</svg>\n";
+}
+void show_histogram_svg(const vector<size_t>& bins)
+{
+    const double IMAGE_WIDTH = 400;
+    const double IMAGE_HEIGHT = 300;
+    const double TEXT_LEFT = 20;
+    const double TEXT_BASELINE = 20;
+    const double TEXT_WIDTH = 50;
+    const double BIN_HEIGHT = 30;
+    const double BLOCK_WIDTH = 10;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    size_t max_count = 0;
+    for (size_t count : bins)
+    {
+        if (count > max_count)
+        {
+            max_count = count;
+        }
+    }
+
+    double max_width = IMAGE_WIDTH - TEXT_WIDTH;
+    double top = 0;
+    for (size_t count : bins)
+    {
+        double bin_width;
+        if (max_count > 0)
+        {
+            bin_width = static_cast<double>(count) / max_count * max_width;
+        }
+        else
+        {
+            bin_width = 0.0;
+        }
+
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(count));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "#aaffaa");
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}
diff --git a/svg.h b/svg.h
new file mode 100644
index 0000000..23ba89b
--- /dev/null
+++ b/svg.h
@@ -0,0 +1,10 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+#include <iostream>
+#include <vector>
+#include <string>
+
+void show_histogram_svg(const std::vector<std::size_t>& bins);
+
+#endif // SVG_H_INCLUDED
diff --git a/unittest.cbp b/unittest.cbp
index 7f9621b..534f497 100644
--- a/unittest.cbp
+++ b/unittest.cbp
@@ -31,6 +31,9 @@
 		<Compiler>
 			<Add option="-Wall" />
 		</Compiler>
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram_internal.h" />
+		<Unit filename="unittest.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>