Step 186: keyboard shortcut reference

editor/src/ShortcutReference.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "imgui.h"
+#include "EditorState.h"
+
+#include <algorithm>
+#include <string>
+
+struct ShortcutReferenceState {
+    char filter[128] = {};
+};
+
+static void renderShortcutReference(EditorState& state, ShortcutReferenceState& panel) {
+    if (!state.ui.showShortcutReference) return;
+    ImGui::Begin("Keyboard Shortcuts", &state.ui.showShortcutReference);
+    ImGui::PushFont(state.uiFont);
+    ImGui::InputText("Filter", panel.filter, sizeof(panel.filter));
+    std::string filterText = panel.filter;
+    std::transform(filterText.begin(), filterText.end(), filterText.begin(),
+                   [](unsigned char c) { return (char)std::tolower(c); });
+    ImGui::Separator();
+
+    ImGui::BeginChild("##shortcuts", ImVec2(0, 0), false);
+    auto actions = state.keys.listActions();
+    std::sort(actions.begin(), actions.end());
+    for (const auto& action : actions) {
+        std::string lower = action;
+        std::transform(lower.begin(), lower.end(), lower.begin(),
+                       [](unsigned char c) { return (char)std::tolower(c); });
+        if (!filterText.empty() && lower.find(filterText) == std::string::npos) continue;
+        KeyCombo combo = state.keys.getBinding(action);
+        ImGui::Text("%s", action.c_str());
+        ImGui::SameLine(260.0f);
+        ImGui::TextDisabled("%s", combo.toString().c_str());
+    }
+    ImGui::EndChild();
+    ImGui::PopFont();
+    ImGui::End();
+}