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227 lines
5.7 KiB
227 lines
5.7 KiB
/* |
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* Copyright (C) 2022 Riyyi |
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* |
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* SPDX-License-Identifier: MIT |
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*/ |
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#include <array> // std::array |
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#include <charconv> // std;:from_chars |
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#include <cstdint> // int32_t, uint32_t |
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#include <limits> // std::numeric_limits |
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#include <ranges> // std::views::split |
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#include <string> // std::getline |
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#include <utility> // std::move |
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#include "ruc/file.h" |
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#include "ruc/format/log.h" |
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#include "ruc/meta/assert.h" |
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#include "ruc/meta/concepts.h" |
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#include "inferno/render/font.h" |
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#include "inferno/render/texture.h" |
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#include "inferno/util/integer.h" |
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namespace Inferno { |
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Font::Font(const std::string& name) |
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: m_name(std::move(name)) |
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{ |
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std::string path = name + ".fnt"; |
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std::string image = name + ".png"; |
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std::string font = ruc::File(path).data(); |
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parseFont(font); |
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m_texture = Texture2D::create(image); |
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} |
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// TODO: Move this to ruc |
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template<Integral T> |
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static T convert(std::string_view value) |
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{ |
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T tmp; |
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std::from_chars(value.data(), value.data() + value.size(), tmp); |
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return tmp; |
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} |
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void Font::parseFont(const std::string& font) |
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{ |
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std::istringstream iss(font); |
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for (std::string line; std::getline(iss, line);) { |
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std::string action = findAction(line); |
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const std::vector<std::string> columns = findColumns(line); |
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// Info |
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// --------------------------------- |
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if (action.compare("info") == 0) { |
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m_size = convert<unsigned char>(findValue("size", columns)); |
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auto paddings = findValue("padding", columns) | std::views::split(','); |
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size_t i = 0; |
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for (const auto& padding : paddings) { |
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// top, right, bottom, left |
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m_padding[i++] = convert<uint32_t>(padding.data()) - PADDING; |
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} |
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continue; |
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} |
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// Common |
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// --------------------------------- |
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if (action.compare("common") == 0) { |
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m_lineSpacing = convert<uint32_t>(findValue("lineHeight", columns)) - m_padding[Padding::Top] - m_padding[Padding::Bottom]; |
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continue; |
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} |
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// Symbol |
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// --------------------------------- |
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if (action.compare("char") == 0) { |
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auto id = convert<char>(findValue("id", columns)); |
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auto width = convert<uint32_t>(findValue("width", columns)); |
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auto height = convert<uint32_t>(findValue("height", columns)); |
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Symbol symbol = { |
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.id = id, |
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.position = { |
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convert<uint32_t>(findValue("x", columns)) + m_padding[Padding::Left], |
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convert<uint32_t>(findValue("y", columns)) + m_padding[Padding::Top], |
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}, |
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.size = { |
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width == 0 ? 0 : width - m_padding[Padding::Left] - m_padding[Padding::Right], |
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height == 0 ? 0 : height - m_padding[Padding::Top] - m_padding[Padding::Bottom], |
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}, |
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.offset = { |
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convert<int32_t>(findValue("xoffset", columns)) + m_padding[Padding::Left], |
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convert<int32_t>(findValue("yoffset", columns)) + m_padding[Padding::Top], |
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}, |
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.advance = convert<uint32_t>(findValue("xadvance", columns)) - m_padding[Padding::Left] - m_padding[Padding::Right] |
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}; |
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m_symbolList.emplace(id, std::make_shared<Symbol>(symbol)); |
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continue; |
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} |
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// Kerning |
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// --------------------------------- |
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if (action.compare("kerning") == 0) { |
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unsigned char first = convert<unsigned char>(findValue("first", columns)); |
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unsigned char second = convert<unsigned char>(findValue("second", columns)); |
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char amount = convert<char>(findValue("amount", columns)); |
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// Add the kerning of the previous symbol to this symbol |
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if (m_symbolList.find(second) != m_symbolList.end()) { |
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auto symbol = m_symbolList.at(second); |
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symbol->kernings.emplace(first, amount); |
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} |
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continue; |
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} |
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} |
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} |
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std::string Font::findAction(const std::string& line) const |
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{ |
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return line.substr(0, line.find(" ")); |
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} |
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std::vector<std::string> Font::findColumns(const std::string& line) const |
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{ |
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std::vector<std::string> elements; |
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size_t index = 0; |
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size_t find = 0; |
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size_t findFirstNotOf = 0; |
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// Loop over line symbols |
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while (find != std::string::npos) { |
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find = line.find(" ", index); |
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findFirstNotOf = line.find_first_not_of(" ", index); |
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// Add element |
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if (find > findFirstNotOf) { |
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elements.push_back(line.substr(index, find - findFirstNotOf)); |
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index += 1 + find - findFirstNotOf; |
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} |
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// Skip double spaces |
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else { |
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index = findFirstNotOf; |
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} |
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} |
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VERIFY(!elements.empty(), "Font file did not find any columns"); |
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return elements; |
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} |
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std::string Font::findValue(const std::string& key, const std::vector<std::string>& columns) const |
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{ |
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size_t find = 0; |
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// Loop over columns |
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for (auto& column : columns) { |
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find = column.find(key + "="); |
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if (find != std::string::npos) { |
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return column.substr(key.length() + 1); |
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} |
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} |
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VERIFY(false, "Font file did not contain key '{}'", key); |
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return ""; |
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} |
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// ----------------------------------------- |
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FontManager::FontManager(s) |
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{ |
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ruc::info("FontManager initialized"); |
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} |
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FontManager::~FontManager() |
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{ |
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} |
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void FontManager::add(const std::string& name, std::shared_ptr<Font> font) |
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{ |
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// Construct (key, value) pair and insert it into the unordered_map |
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m_fontList.emplace(std::move(name), std::move(font)); |
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} |
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std::shared_ptr<Font> FontManager::load(const std::string& name) |
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{ |
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if (exists(name)) { |
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return get(name); |
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} |
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std::shared_ptr<Font> font = std::make_shared<Font>(name); |
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add(name, font); |
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return get(name); |
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} |
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std::shared_ptr<Font> FontManager::get(const std::string& name) |
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{ |
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return exists(name) ? m_fontList.at(name) : nullptr; |
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} |
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bool FontManager::exists(const std::string& name) |
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{ |
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return m_fontList.find(name) != m_fontList.end(); |
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} |
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void FontManager::remove(const std::string& name) |
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{ |
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if (exists(name)) { |
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m_fontList.erase(name); |
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} |
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} |
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void FontManager::remove(std::shared_ptr<Font> font) |
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{ |
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if (exists(font->name())) { |
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m_fontList.erase(font->name()); |
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} |
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} |
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} // namespace Inferno |
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void ruc::format::Formatter<glm::ivec2>::format(Builder& builder, glm::ivec2 value) const |
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{ |
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return Formatter<std::vector<int32_t>>::format(builder, { value.x, value.y }); |
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}
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