Add ShortcutManager for handling keyboard shortcuts in the editor

src/app/editor/system/shortcut_manager.cc

@@ -0,0 +1,141 @@
+#include "shortcut_manager.h"
+
+#include <algorithm>
+#include <string>
+
+#include "app/gui/input.h"
+#include "imgui/imgui.h"
+
+namespace yaze {
+namespace editor {
+
+namespace {
+constexpr std::pair<ImGuiKey, const char*> kKeyNames[] = {
+    {ImGuiKey_Tab, "Tab"},
+    {ImGuiKey_LeftArrow, "Left"},
+    {ImGuiKey_RightArrow, "Right"},
+    {ImGuiKey_UpArrow, "Up"},
+    {ImGuiKey_DownArrow, "Down"},
+    {ImGuiKey_PageUp, "PageUp"},
+    {ImGuiKey_PageDown, "PageDown"},
+    {ImGuiKey_Home, "Home"},
+    {ImGuiKey_End, "End"},
+    {ImGuiKey_Insert, "Insert"},
+    {ImGuiKey_Delete, "Delete"},
+    {ImGuiKey_Backspace, "Backspace"},
+    {ImGuiKey_Space, "Space"},
+    {ImGuiKey_Enter, "Enter"},
+    {ImGuiKey_Escape, "Escape"},
+    {ImGuiMod_Ctrl, "Ctrl"},
+    {ImGuiMod_Shift, "Shift"},
+    {ImGuiMod_Alt, "Alt"},
+    {ImGuiMod_Super, "Super"},
+    {ImGuiKey_A, "A"},
+    {ImGuiKey_B, "B"},
+    {ImGuiKey_C, "C"},
+    {ImGuiKey_D, "D"},
+    {ImGuiKey_E, "E"},
+    {ImGuiKey_F, "F"},
+    {ImGuiKey_G, "G"},
+    {ImGuiKey_H, "H"},
+    {ImGuiKey_I, "I"},
+    {ImGuiKey_J, "J"},
+    {ImGuiKey_K, "K"},
+    {ImGuiKey_L, "L"},
+    {ImGuiKey_M, "M"},
+    {ImGuiKey_N, "N"},
+    {ImGuiKey_O, "O"},
+    {ImGuiKey_P, "P"},
+    {ImGuiKey_Q, "Q"},
+    {ImGuiKey_R, "R"},
+    {ImGuiKey_S, "S"},
+    {ImGuiKey_T, "T"},
+    {ImGuiKey_U, "U"},
+    {ImGuiKey_V, "V"},
+    {ImGuiKey_W, "W"},
+    {ImGuiKey_X, "X"},
+    {ImGuiKey_Y, "Y"},
+    {ImGuiKey_Z, "Z"},
+    {ImGuiKey_F1, "F1"},
+    {ImGuiKey_F2, "F2"},
+    {ImGuiKey_F3, "F3"},
+    {ImGuiKey_F4, "F4"},
+    {ImGuiKey_F5, "F5"},
+    {ImGuiKey_F6, "F6"},
+    {ImGuiKey_F7, "F7"},
+    {ImGuiKey_F8, "F8"},
+    {ImGuiKey_F9, "F9"},
+    {ImGuiKey_F10, "F10"},
+    {ImGuiKey_F11, "F11"},
+    {ImGuiKey_F12, "F12"},
+    {ImGuiKey_F13, "F13"},
+    {ImGuiKey_F14, "F14"},
+    {ImGuiKey_F15, "F15"},
+};
+
+constexpr const char* GetKeyName(ImGuiKey key) {
+  for (const auto& pair : kKeyNames) {
+    if (pair.first == key) {
+      return pair.second;
+    }
+  }
+  return "";
+}
+}  // namespace
+
+std::string PrintShortcut(const std::vector<ImGuiKey>& keys) {
+  std::string shortcut;
+  for (size_t i = keys.size(); i > 0; --i) {
+    shortcut += GetKeyName(keys[i - 1]);
+    if (i > 1) {
+      shortcut += "+";
+    }
+  }
+  return shortcut;
+}
+
+constexpr std::string kCtrlKey = "Ctrl";
+constexpr std::string kAltKey = "Alt";
+constexpr std::string kShiftKey = "Shift";
+constexpr std::string kSuperKey = "Super";
+
+std::vector<ImGuiKey> ParseShortcut(const std::string& shortcut) {
+  std::vector<ImGuiKey> shortcuts;
+  // Search for special keys and the + symbol to combine with the
+  // MapKeyToImGuiKey function
+  size_t start = 0;
+  size_t end = shortcut.find(kCtrlKey);
+  if (end != std::string::npos) {
+    shortcuts.push_back(ImGuiMod_Ctrl);
+    start = end + kCtrlKey.size();
+  }
+
+  end = shortcut.find(kAltKey, start);
+  if (end != std::string::npos) {
+    shortcuts.push_back(ImGuiMod_Alt);
+    start = end + kAltKey.size();
+  }
+
+  end = shortcut.find(kShiftKey, start);
+  if (end != std::string::npos) {
+    shortcuts.push_back(ImGuiMod_Shift);
+    start = end + kShiftKey.size();
+  }
+
+  end = shortcut.find(kSuperKey, start);
+  if (end != std::string::npos) {
+    shortcuts.push_back(ImGuiMod_Super);
+    start = end + kSuperKey.size();
+  }
+
+  // Parse the rest of the keys
+  while (start < shortcut.size()) {
+    shortcuts.push_back(gui::MapKeyToImGuiKey(shortcut[start]));
+    start++;
+  }
+
+  return shortcuts;
+}
+
+}  // namespace editor
+}  // namespace yaze

src/app/editor/system/shortcut_manager.h

@@ -0,0 +1,65 @@
+#ifndef YAZE_APP_EDITOR_SYSTEM_SHORTCUT_MANAGER_H
+#define YAZE_APP_EDITOR_SYSTEM_SHORTCUT_MANAGER_H
+
+#include <functional>
+#include <string>
+#include <unordered_map>
+
+#include "imgui/imgui.h"
+
+namespace yaze {
+namespace editor {
+
+struct Shortcut {
+  std::string name;
+  std::vector<ImGuiKey> keys;
+  std::function<void()> callback;
+};
+
+std::vector<ImGuiKey> ParseShortcut(const std::string &shortcut);
+
+std::string PrintShortcut(const std::vector<ImGuiKey> &keys);
+
+class ShortcutManager {
+ public:
+  void RegisterShortcut(const std::string &name,
+                        const std::vector<ImGuiKey> &keys) {
+    shortcuts_[name] = {name, keys};
+  }
+  void RegisterShortcut(const std::string &name,
+                        const std::vector<ImGuiKey> &keys,
+                        std::function<void()> callback) {
+    shortcuts_[name] = {name, keys, callback};
+  }
+
+  void RegisterShortcut(const std::string &name, ImGuiKey key,
+                        std::function<void()> callback) {
+    shortcuts_[name] = {name, {key}, callback};
+  }
+
+  void ExecuteShortcut(const std::string &name) const {
+    shortcuts_.at(name).callback();
+  }
+
+  // Access the shortcut and print the readable name of the shortcut for menus
+  const Shortcut &GetShortcut(const std::string &name) const {
+    return shortcuts_.at(name);
+  }
+
+  // Get shortcut callback function
+  std::function<void()> GetCallback(const std::string &name) const {
+    return shortcuts_.at(name).callback;
+  }
+
+  const std::string GetKeys(const std::string &name) const {
+    return PrintShortcut(shortcuts_.at(name).keys);
+  }
+
+ private:
+  std::unordered_map<std::string, Shortcut> shortcuts_;
+};
+
+}  // namespace editor
+}  // namespace yaze
+
+#endif  // YAZE_APP_EDITOR_SYSTEM_SHORTCUT_MANAGER_H