1 files changed, 126 insertions, 0 deletions
diff --git a/libs/litehtml/containers/test/Font.cpp b/libs/litehtml/containers/test/Font.cpp
new file mode 100644
index 0000000000..5f8c42f396
--- /dev/null
+++ b/libs/litehtml/containers/test/Font.cpp
@@ -0,0 +1,126 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include "Font.h"
+string readfile(string filename);
+using namespace std;
+
+string Font::font_dir = "../containers/test/fonts/"; // ctest is run from litehtml/build
+Font::size_name Font::installed_fonts[] =
+{
+	{ 12, "terminus-ascii-bold-12px.yaff" },
+	{ 14, "terminus-ascii-bold-14px.yaff" },
+	{ 16, "terminus-ascii-bold-16px.yaff" },
+	{ 18, "terminus-ascii-bold-18px.yaff" },
+	{ 20, "terminus-ascii-bold-20px.yaff" },
+	{ 22, "terminus-ascii-bold-22px.yaff" },
+	{ 24, "terminus-ascii-bold-24px.yaff" },
+	{ 28, "terminus-ascii-bold-28px.yaff" },
+	{ 32, "terminus-ascii-bold-32px.yaff" },
+	{ 0, "" }
+};
+
+Font::Font(int size)
+{
+	// find most suitable font
+	int min_diff = 1000;
+	int n = 0;
+	for (int i = 0; installed_fonts[i].size; i++)
+	{
+		int diff = abs(installed_fonts[i].size - size);
+		if (diff < min_diff)
+		{
+			min_diff = diff;
+			n = i;
+		}
+	}
+	
+	load(font_dir + installed_fonts[n].name);
+}
+
+Bitmap Font::get_glyph(int ch, web_color color)
+{
+	if (ch < 0 || ch >= 128 || glyphs[ch].width == 0)
+	{
+		Bitmap bmp(width, height, web_color::transparent);
+		bmp.draw_rect(1, 1, width - 2, height - 2, color);
+		return bmp;
+	}
+	else if (color != web_color::black)
+	{
+		Bitmap bmp = glyphs[ch];
+		bmp.replace_color(web_color::black, color);
+		return bmp;
+	}
+	else
+	{
+		return glyphs[ch];
+	}
+}
+
+// load .yaff font file in an ad hoc manner (can't parse arbitrary yaff files)
+void Font::load(string filename)
+{
+	string text = readfile(filename);
+	
+	string_vector lines;
+	split_string(text, lines, "\n");
+
+	int i;
+	// parse header
+	for (i = 0; i < (int) lines.size(); i++)
+	{
+		string line = lines[i];
+		trim(line);
+		if (line.empty() || line[0] == '#') continue; // skip empty lines and comments
+
+		auto sep = line.find(':');
+		if (sep == string::npos) return; // line without ':' - error
+
+		auto key = line.substr(0, sep);   trim(key);
+		auto val = line.substr(sep + 1);  trim(val);
+		if (val.empty()) break; // end of header
+
+		if (key == "cell-size")    sscanf(val.c_str(), "%d %d", &width, &height);
+		else if (key == "ascent")  ascent = atoi(val.c_str());
+		else if (key == "descent") descent = atoi(val.c_str());
+	}
+
+	// parse glyphs
+	
+	// only u+NNNN: label is recognized, all others are skipped
+	auto parse_key = [&]() {
+		int ch = -1;
+		for (; i < (int) lines.size(); i++)
+		{
+			string line = lines[i];
+			trim(line);
+			if (line.empty()) continue;
+			if (line.find(':') == string::npos) break; // start of glyph data
+			if (line.substr(0, 2) == "u+")
+				sscanf(line.c_str(), "u+%X:", (unsigned int*) &ch);
+		}
+		return ch;
+	};
+	
+	auto parse_glyph = [&](int ch) {
+		Bitmap& glyph = glyphs[ch] = Bitmap(width, height, web_color::transparent);
+		for (int y = 0; i < (int) lines.size() && y < height; i++, y++)
+		{
+			string line = lines[i];
+			trim(line);
+			for (int x = 0; x < min((int)line.size(), width); x++)
+			{
+				if (line[x] == '@')
+					glyph.set_pixel(x, y, web_color::black);
+			}
+		}
+	};
+
+	while (i < (int) lines.size())
+	{
+		int ch = parse_key();
+		if (ch < 0 || ch >= 128) break;
+		parse_glyph(ch);
+	}
+
+	x_height = glyphs['x'].find_picture(web_color::transparent).height;
+}