133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
#pragma once
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// Step 162: Help panel markdown renderer
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#include "imgui.h"
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#include <string>
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#include <vector>
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#include <sstream>
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#include <fstream>
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#include <algorithm>
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struct HelpSection {
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std::string title;
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std::string content;
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};
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struct HelpPanelState {
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int selected = 0;
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std::vector<HelpSection> sections;
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std::string lastRoot;
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};
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static bool loadHelpFile(const std::string& path, std::string& out) {
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std::ifstream in(path);
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if (!in.is_open()) return false;
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std::ostringstream ss;
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ss << in.rdbuf();
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out = ss.str();
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return true;
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}
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static std::vector<HelpSection> parseHelpSections(const std::string& text) {
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std::vector<HelpSection> sections;
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std::istringstream ss(text);
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std::string line;
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HelpSection current;
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while (std::getline(ss, line)) {
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if (line.rfind("# ", 0) == 0) {
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if (!current.title.empty() || !current.content.empty()) {
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sections.push_back(current);
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current = HelpSection();
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}
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current.title = line.substr(2);
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} else {
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current.content += line + "\n";
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}
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}
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if (!current.title.empty() || !current.content.empty()) {
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sections.push_back(current);
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}
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if (sections.empty()) {
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sections.push_back({"Documentation", text});
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}
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return sections;
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}
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static void renderMarkdownLine(const std::string& line, ImFont* monoFont) {
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std::string trimmed = line;
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while (!trimmed.empty() && (trimmed.back() == '\r' || trimmed.back() == '\n')) {
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trimmed.pop_back();
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}
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if (trimmed.rfind("## ", 0) == 0) {
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ImGui::TextColored(ImVec4(0.7f, 0.9f, 1.0f, 1.0f), "%s", trimmed.substr(3).c_str());
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} else if (trimmed.rfind("### ", 0) == 0) {
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ImGui::TextColored(ImVec4(0.6f, 0.85f, 0.95f, 1.0f), "%s", trimmed.substr(4).c_str());
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} else if (trimmed.rfind("- ", 0) == 0) {
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ImGui::BulletText("%s", trimmed.substr(2).c_str());
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} else if (trimmed.rfind("```", 0) == 0) {
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ImGui::TextDisabled("%s", trimmed.c_str());
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} else if (trimmed.rfind("`", 0) == 0 && trimmed.size() > 1) {
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ImGui::PushFont(monoFont);
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ImGui::TextUnformatted(trimmed.c_str());
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ImGui::PopFont();
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} else {
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ImGui::TextWrapped("%s", trimmed.c_str());
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}
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}
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static void renderMarkdown(const std::string& text, ImFont* monoFont) {
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std::istringstream ss(text);
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std::string line;
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while (std::getline(ss, line)) {
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renderMarkdownLine(line, monoFont);
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}
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}
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static void loadHelpContent(HelpPanelState& state, const std::string& root) {
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if (state.lastRoot == root && !state.sections.empty()) return;
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state.sections.clear();
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state.selected = 0;
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state.lastRoot = root;
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std::string content;
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if (!root.empty()) {
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if (!loadHelpFile(root + "\\docs\\help.md", content)) {
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loadHelpFile(root + "/docs/help.md", content);
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}
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}
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if (content.empty()) {
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content = "# Documentation\n\nDocumentation not found.\n";
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}
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state.sections = parseHelpSections(content);
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}
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static void renderHelpPanel(HelpPanelState& state,
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const std::string& workspaceRoot,
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ImFont* monoFont) {
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loadHelpContent(state, workspaceRoot);
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if (state.sections.empty()) {
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ImGui::TextDisabled("(no documentation)");
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return;
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}
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ImGui::Columns(2, "help_cols", true);
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ImGui::BeginChild("help_nav", ImVec2(0, 0), true);
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for (size_t i = 0; i < state.sections.size(); ++i) {
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const auto& section = state.sections[i];
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bool selected = (int)i == state.selected;
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if (ImGui::Selectable(section.title.c_str(), selected)) {
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state.selected = (int)i;
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}
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}
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ImGui::EndChild();
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ImGui::NextColumn();
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ImGui::BeginChild("help_body", ImVec2(0, 0), false);
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const auto& section = state.sections[std::min((int)state.sections.size() - 1, state.selected)];
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ImGui::TextColored(ImVec4(0.7f, 0.9f, 1.0f, 1.0f), "%s", section.title.c_str());
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ImGui::Separator();
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renderMarkdown(section.content, monoFont);
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ImGui::EndChild();
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ImGui::Columns(1);
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}
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