Add back default fonts

libs/fonts/source/default_fonts.cpp

@@ -0,0 +1,99 @@
+#include <psemek/fonts/font.hpp>
+#include <psemek/fonts/monospace_font.hpp>
+#include <psemek/fonts/kerned_font.hpp>
+
+#include <psemek/gfx/resource/font_9x12_png.hpp>
+#include <psemek/gfx/resource/font_10x12_bold_png.hpp>
+#include <psemek/fonts/resources/font_9x12_glyphs_txt.hpp>
+#include <psemek/fonts/resources/font_10x12_bold_glyphs_txt.hpp>
+
+#include <psemek/gfx/pixmap.hpp>
+
+#include <psemek/io/memory_stream.hpp>
+
+#include <sstream>
+
+namespace psemek::fonts
+{
+
+	std::unique_ptr<font> make_default_monospace_9x12_font()
+	{
+		character_range range{32, 128};
+		std::string_view name = "default_monospace_9x12";
+		math::vector<int, 2> size{9, 12};
+
+		gfx::texture_2d atlas = gfx::texture_2d::from_pixmap(gfx::read_image<std::uint8_t>(io::memory_istream{gfx::resource::font_9x12_png.data}));
+		atlas.nearest_filter();
+		atlas.clamp();
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_G, gl::RED);
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_B, gl::RED);
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_A, gl::RED);
+
+		std::vector<math::box<float, 2>> texcoords(range.end - range.begin);
+
+		for (char32_t c = range.begin; c < range.end; ++c)
+		{
+			int const row = 16;
+			int x = (c - range.begin) % row;
+			int y = (c - range.begin) / row;
+
+			math::box<float, 2> b;
+			b[0].min = x * 11 + 1;
+			b[0].max = b[0].min + 9;
+			b[1].min = y * 14 + 1;
+			b[1].max = b[1].min + 12;
+			texcoords[c - range.begin] = b;
+		}
+
+		return std::make_unique<monospace_font>(range, name, size, std::move(atlas), std::move(texcoords));
+	}
+
+	static std::unique_ptr<font> make_default_font(std::string_view name, math::vector<int, 2> const & size, rs::resource const & atlas_resource, rs::resource const & glyphs_resource)
+	{
+		gfx::texture_2d atlas = gfx::texture_2d::from_pixmap(gfx::read_image<std::uint8_t>(io::memory_istream{atlas_resource.data}));
+		atlas.nearest_filter();
+		atlas.clamp();
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_G, gl::RED);
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_B, gl::RED);
+		gl::TexParameteri(atlas.target, gl::TEXTURE_SWIZZLE_A, gl::RED);
+
+		bmfont_data data;
+		data.name = name;
+		data.size = size;
+		data.baseline = 2;
+
+		{
+			std::istringstream is{std::string(glyphs_resource.data)};
+
+			std::string line;
+			while (std::getline(is, line))
+			{
+				if (auto pos = line.find('#'); pos != std::string::npos)
+					line = line.substr(0, pos);
+
+				if (line.empty()) continue;
+
+				std::istringstream is{std::move(line)};
+
+				int c;
+				is >> c;
+				auto & glyph = data.glyphs[c];
+
+				is >> glyph.start_x >> glyph.start_y >> glyph.size_x >> glyph.size_y >> glyph.offset_x >> glyph.offset_y >> glyph.advance;
+			}
+		}
+
+		return std::make_unique<kerned_font>(std::move(data), std::move(atlas));
+	}
+
+	std::unique_ptr<font> make_default_9x12_font()
+	{
+		return make_default_font("default_9x12", {9, 12}, gfx::resource::font_9x12_png, resources::font_9x12_glyphs_txt);
+	}
+
+	std::unique_ptr<font> make_default_10x12_bold_font()
+	{
+		return make_default_font("default_10x12_bold", {10, 12}, gfx::resource::font_10x12_bold_png, resources::font_10x12_bold_glyphs_txt);
+	}
+
+}