Improved input device configuration.

Default keyboard mappings are now applied if the user has not configured the keyboard.

CONTRIBUTING.md

@@ -38,6 +38,7 @@ https://google.github.io/styleguide/cppguide.html
 * Comments should be proper sentences, starting with a capital letter and ending with a dot
 * Use K&R placements of braces, read the Linux Kernel coding style document for clarifications
 * Always use spaces between keywords and opening brackets, i.e. `if ()`, `for ()`, `while ()` etc.
+* Indentation of switch/case statements is optional, but it's usually easier to read the code with indentations in place
 * Use `std::string` instead of `char *` or `char []` unless there is a specific reason requiring the latter
 * If the arguments (and initializer list) for a function or class exceeds 4 items, arrange them vertically to make the code easier to read
 * Always declare one variable per line, never combine multiple declarations of the same type

NEWS.md

@@ -18,6 +18,7 @@ v1.0.0
 * Per-game launch command override, so that different cores or emulators can be used on a per-game basis (saved to gamelist.xml)
 * Core location can be defined relative to the emulator binary using the %EMUPATH% varible in es_systems.cfg (mostly useful for Windows)
 * Help system updated and expanded to the complete application (previously it was only partially implemented)
+* Improved input device configuration, and default keyboard mappings are now applied if the keyboard has not been configured by the user
 * GUI-configurable option to sort favorite games on the top of the game lists (favorites marked with stars)
 * Added new component GuiComplexTextEditPopup to handle changes to configuration file entries and similar
 * Speed improvements and optimizations, the application now starts faster and feels more responsive

es-app/src/main.cpp

@@ -495,6 +495,11 @@ int main(int argc, char* argv[])
             ViewController::get()->goToStart();
         }
         else {
+            // Always reset ShowDefaultKeyboardWarning to true if the es_input.cfg
+            // file is missing.
+            Settings::getInstance()->setBool("ShowDefaultKeyboardWarning", true);
+            Settings::getInstance()->saveFile();
+
             window.pushGui(new GuiDetectDevice(&window, true, [] {
                     ViewController::get()->goToStart(); }));
         }

es-app/src/views/UIModeController.cpp

@@ -146,8 +146,8 @@ void UIModeController::logInput(InputConfig * config, Input input)
         mapname += ", ";
     }
 
-    LOG(LogDebug) << "UIModeController::logInput(" << config->getDeviceName() <<
+    LOG(LogDebug) << "UIModeController::logInput(" << config->getDeviceName() << "): " <<
-            "): " << input.string() << ", isMappedTo=" << mapname << ", value=" << input.value;
+            input.string() << ", isMappedTo=" << mapname << ", value=" << input.value;
 }
 
 bool UIModeController::isValidInput(InputConfig* config, Input input)

es-app/src/views/ViewController.cpp

@@ -14,6 +14,7 @@
 #include "animations/LaunchAnimation.h"
 #include "animations/MoveCameraAnimation.h"
 #include "guis/GuiMenu.h"
+#include "guis/GuiMsgBox.h"
 #include "views/gamelist/DetailedGameListView.h"
 #include "views/gamelist/IGameListView.h"
 #include "views/gamelist/GridGameListView.h"
@@ -21,11 +22,12 @@
 #include "views/SystemView.h"
 #include "views/UIModeController.h"
 #include "FileFilterIndex.h"
+#include "InputManager.h"
 #include "Log.h"
 #include "Settings.h"
+#include "Sound.h"
 #include "SystemData.h"
 #include "Window.h"
-#include "Sound.h"
 
 ViewController* ViewController::sInstance = nullptr;
 
@@ -60,6 +62,26 @@ ViewController::~ViewController()
 
 void ViewController::goToStart()
 {
+    // Check if the keyboard config is set as application default, meaning no user
+    // configuration has been performed.
+    if (InputManager::getInstance()->
+            getInputConfigByDevice(DEVICE_KEYBOARD)->getDefaultConfigFlag()) {
+        if (Settings::getInstance()->getBool("ShowDefaultKeyboardWarning")) {
+            std::string message = "NO KEYBOARD CONFIGURATION COULD BE\n"
+                    "FOUND IN ES_INPUT.CFG, SO APPLYING THE\n"
+                    "DEFAULT KEYBOARD MAPPINGS. IT'S HOWEVER\n"
+                    "RECOMMENDED TO SETUP YOUR OWN KEYBOARD\n"
+                    "CONFIGURATION. TO DO SO, CHOOSE THE ENTRY\n"
+                    "\"CONFIGURE INPUT\" ON THE MAIN MENU.";
+
+        mWindow->pushGui(new GuiMsgBox(mWindow, HelpStyle(), message.c_str(),
+            "OK", nullptr, "DON'T SHOW AGAIN", [] {
+                Settings::getInstance()->setBool("ShowDefaultKeyboardWarning", false);
+                Settings::getInstance()->saveFile();
+            }));
+        }
+    }
+
     // If a specific system is requested, go directly to its game list.
     auto requestedSystem = Settings::getInstance()->getString("StartupSystem");
     if ("" != requestedSystem && "retropie" != requestedSystem) {

es-core/src/InputConfig.cpp

@@ -59,7 +59,8 @@ InputConfig::InputConfig(
         const std::string& deviceGUID)
         : mDeviceId(deviceId),
         mDeviceName(deviceName),
-        mDeviceGUID(deviceGUID)
+        mDeviceGUID(deviceGUID),
+        mDefaultConfigFlag(false)
 {
 }
 
@@ -186,7 +187,7 @@ void InputConfig::loadFromXML(pugi::xml_node& node)
         InputType typeEnum = stringToInputType(type);
 
         if (typeEnum == TYPE_COUNT) {
-            LOG(LogError) << "InputConfig load error - input of type \"" << type <<
+            LOG(LogError) << "Error - InputConfig load error - input of type \"" << type <<
                     "\" is invalid! Skipping input \"" << name << "\".\n";
             continue;
         }
@@ -195,7 +196,7 @@ void InputConfig::loadFromXML(pugi::xml_node& node)
         int value = input.attribute("value").as_int();
 
         if (value == 0) {
-            LOG(LogWarning) << "WARNING: InputConfig value is 0 for " <<
+            LOG(LogWarning) << "Warning - InputConfig value is 0 for " <<
                     type << " " << id << "!\n";
         }
 

es-core/src/InputConfig.h

@@ -128,6 +128,10 @@ public:
     inline const std::string& getDeviceName() { return mDeviceName; }
     inline const std::string& getDeviceGUIDString() { return mDeviceGUID; }
 
+    void setDefaultConfigFlag() { mDefaultConfigFlag = true; };
+    void unsetDefaultConfigFlag() { mDefaultConfigFlag = false; };
+    bool getDefaultConfigFlag() { return mDefaultConfigFlag; };
+
     // Returns true if Input is mapped to this name, false otherwise.
     bool isMappedTo(const std::string& name, Input input);
     bool isMappedLike(const std::string& name, Input input);
@@ -149,6 +153,7 @@ private:
     const int mDeviceId;
     const std::string mDeviceName;
     const std::string mDeviceGUID;
+    bool mDefaultConfigFlag;
 };
 
 #endif // ES_CORE_INPUT_CONFIG_H

es-core/src/InputManager.cpp

@@ -299,8 +299,15 @@ bool InputManager::parseEvent(const SDL_Event& ev, Window* window)
 bool InputManager::loadInputConfig(InputConfig* config)
 {
     std::string path = getConfigPath();
-    if (!Utils::FileSystem::exists(path))
+    if (!Utils::FileSystem::exists(path)) {
+        if (config->getDeviceName() == "Keyboard") {
+            LOG(LogDebug) << "InputManager::loadInputConfig(): Assigning default keyboard "
+                    "mappings as there is no es_input.cfg configuration file.";
+            loadDefaultKBConfig();
+            config->setDefaultConfigFlag();
+        }
         return false;
+    }
 
     pugi::xml_document doc;
     #ifdef _WIN64
@@ -323,17 +330,25 @@ bool InputManager::loadInputConfig(InputConfig* config)
     if (!configNode)
         configNode = root.find_child_by_attribute("inputConfig",
                 "deviceName", config->getDeviceName().c_str());
-    if (!configNode)
+    if (!configNode) {
+        if (config->getDeviceName() == "Keyboard") {
+            LOG(LogDebug) << "InputManager::loadInputConfig(): Assigning default keyboard "
+                    "mappings as there is no keyboard configuration in es_input.cfg.";
+            loadDefaultKBConfig();
+            config->setDefaultConfigFlag();
+            return true;
+        }
+        else {
             return false;
+        }
+    }
 
     config->loadFromXML(configNode);
     return true;
 }
 
-// Used in an "emergency" where no keyboard config could be loaded from the inputmanager
+// If there is no es_input.cfg file or if the user has not yet configured the keyboard
-// config file. Allows the user to select to reconfigure in menus if this happens without
+// mappings, then load these defaults.
-// having to delete es_input.cfg manually.
-// Note: Not currently used.
 void InputManager::loadDefaultKBConfig()
 {
     InputConfig* cfg = getInputConfigByDevice(DEVICE_KEYBOARD);
@@ -363,6 +378,9 @@ void InputManager::writeDeviceConfig(InputConfig* config)
 
     std::string path = getConfigPath();
 
+    LOG(LogDebug) << "InputManager::writeDeviceConfig(): "
+            "Saving input configuration file to " << path;
+
     pugi::xml_document doc;
 
     if (Utils::FileSystem::exists(path)) {
@@ -420,7 +438,7 @@ void InputManager::writeDeviceConfig(InputConfig* config)
     Scripting::fireEvent("config-changed");
     Scripting::fireEvent("controls-changed");
 
-    // Execute any doOnFinish commands and re-load the config for changes.
+    // Execute any doOnFinish commands and reload the config for changes.
     doOnFinish();
     loadInputConfig(config);
 }
@@ -440,7 +458,7 @@ void InputManager::doOnFinish()
         #endif
 
         if (!result) {
-            LOG(LogError) << "Error parsing input config: " << result.description();
+            LOG(LogError) << "Error - Couldn't parse input config: " << result.description();
         }
         else {
             pugi::xml_node root = doc.child("inputList");
@@ -514,7 +532,7 @@ std::string InputManager::getDeviceGUIDString(int deviceId)
 
     auto it = mJoysticks.find(deviceId);
     if (it == mJoysticks.cend()) {
-        LOG(LogError) << "getDeviceGUIDString - deviceId " << deviceId << " not found!";
+        LOG(LogError) << "Error - getDeviceGUIDString - deviceId " << deviceId << " not found!";
         return "something went horribly wrong";
     }
 

es-core/src/InputManager.h

@@ -25,29 +25,6 @@ union SDL_Event;
 // You should only ever instantiate one of these, by the way.
 class InputManager
 {
-private:
-    InputManager();
-
-    static InputManager* mInstance;
-
-    static const int DEADZONE = 23000;
-
-    void loadDefaultKBConfig();
-
-    std::map<SDL_JoystickID, SDL_Joystick*> mJoysticks;
-    std::map<SDL_JoystickID, InputConfig*> mInputConfigs;
-    InputConfig* mKeyboardInputConfig;
-    InputConfig* mCECInputConfig;
-
-    std::map<SDL_JoystickID, int*> mPrevAxisValues;
-
-    bool initialized() const;
-
-    void addJoystickByDeviceIndex(int id);
-    void removeJoystickByJoystickID(SDL_JoystickID id);
-    // Returns true if successfully loaded, false if not (or if it didn't exist).
-    bool loadInputConfig(InputConfig* config);
-
 public:
     virtual ~InputManager();
 
@@ -71,6 +48,29 @@ public:
     InputConfig* getInputConfigByDevice(int deviceId);
 
     bool parseEvent(const SDL_Event& ev, Window* window);
+
+private:
+    InputManager();
+
+    static InputManager* mInstance;
+
+    static const int DEADZONE = 23000;
+
+    void loadDefaultKBConfig();
+
+    std::map<SDL_JoystickID, SDL_Joystick*> mJoysticks;
+    std::map<SDL_JoystickID, InputConfig*> mInputConfigs;
+    InputConfig* mKeyboardInputConfig;
+    InputConfig* mCECInputConfig;
+
+    std::map<SDL_JoystickID, int*> mPrevAxisValues;
+
+    bool initialized() const;
+
+    void addJoystickByDeviceIndex(int id);
+    void removeJoystickByJoystickID(SDL_JoystickID id);
+    // Returns true if successfully loaded, false if not (or if it didn't exist).
+    bool loadInputConfig(InputConfig* config);
 };
 
 #endif // ES_CORE_INPUT_MANAGER_H

es-core/src/Settings.cpp

@@ -214,9 +214,10 @@ void Settings::setDefaults()
 
     //
     // Settings that can be changed in es_settings.cfg
-    // but that are not configurable via the GUI (yet).
+    // but that are not configurable via the GUI.
     //
 
+    mBoolMap["ShowDefaultKeyboardWarning"] = true;
     mStringMap["DefaultSortOrder"] = "filename, ascending";
     mStringMap["MediaDirectory"] = "";
     mStringMap["ROMDirectory"] = "";

es-core/src/Window.cpp

@@ -13,6 +13,7 @@
 #include "InputManager.h"
 #include "Log.h"
 #include "Scripting.h"
+
 #include <algorithm>
 #include <iomanip>
 
@@ -130,7 +131,8 @@ void Window::input(InputConfig* config, Input input)
         if (mScreenSaver->isScreenSaverActive() &&
                 Settings::getInstance()->getBool("ScreenSaverControls") &&
                 (Settings::getInstance()->getString("ScreenSaverBehavior") == "random video")) {
-            if (mScreenSaver->getCurrentGame() != nullptr && (config->isMappedLike("right", input) ||
+            if (mScreenSaver->getCurrentGame() != nullptr &&
+                    (config->isMappedLike("right", input) ||
                     config->isMappedTo("start", input) || config->isMappedTo("select", input))) {
                 if (config->isMappedLike("right", input) || config->isMappedTo("select", input)) {
                     if (input.value != 0) {
@@ -140,7 +142,7 @@ void Window::input(InputConfig* config, Input input)
                     return;
                 }
                 else if (config->isMappedTo("start", input) && input.value != 0) {
-                    // Launch game!
+                    // Launch game.
                     cancelScreenSaver();
                     mScreenSaver->launchGame();
                     // To force handling the wake up process.
@@ -388,8 +390,7 @@ void Window::setHelpPrompts(const std::vector<HelpPrompt>& prompts, const HelpSt
         int i = 0;
         int aVal = 0;
         int bVal = 0;
-        while (map[i] != nullptr)
+        while (map[i] != nullptr) {
-        {
             if (a.first == map[i])
                 aVal = i;
             if (b.first == map[i])

es-core/src/Window.h

@@ -27,7 +27,8 @@ struct HelpStyle;
 class Window
 {
 public:
-    class ScreenSaver {
+    class ScreenSaver
+    {
     public:
         virtual void startScreenSaver() = 0;
         virtual void stopScreenSaver() = 0;
@@ -41,7 +42,8 @@ public:
         virtual void resetCounts() = 0;
     };
 
-    class InfoPopup {
+    class InfoPopup
+    {
     public:
         virtual void render(const Transform4x4f& parentTrans) = 0;
         virtual void stop() = 0;

es-core/src/guis/GuiDetectDevice.cpp

@@ -51,7 +51,7 @@ GuiDetectDevice::GuiDetectDevice(
 
     // Message.
     mMsg1 = std::make_shared<TextComponent>(mWindow,
-            "HOLD A BUTTON ON YOUR DEVICE TO CONFIGURE IT.",
+            "HOLD A BUTTON ON YOUR DEVICE OR KEYBOARD TO CONFIGURE IT.",
             Font::get(FONT_SIZE_SMALL), 0x777777FF, ALIGN_CENTER);
     mGrid.setEntry(mMsg1, Vector2i(0, 2), false, true);
 

es-core/src/guis/GuiInputConfig.cpp

@@ -200,22 +200,33 @@ GuiInputConfig::GuiInputConfig(
     // Buttons.
     std::vector< std::shared_ptr<ButtonComponent> > buttons;
     std::function<void()> okFunction = [this, okCallback] {
-        InputManager::getInstance()->writeDeviceConfig(mTargetConfig); // save
+        // If we have just configured the keyboard, then unset the flag to indicate that
+        // we are using the default keyboard mappings.
+        if (mTargetConfig->getDeviceId() == DEVICE_KEYBOARD) {
+            InputManager::getInstance()->
+                    getInputConfigByDevice(DEVICE_KEYBOARD)->unsetDefaultConfigFlag();
+        }
+        InputManager::getInstance()->writeDeviceConfig(mTargetConfig); // Save.
         if (okCallback)
             okCallback();
         delete this;
     };
-    buttons.push_back(std::make_shared<ButtonComponent>(mWindow, "OK", "ok", [this, okFunction] {
+
-        // Check if the hotkey enable button is set. if not prompt the
+    buttons.push_back(std::make_shared<ButtonComponent>
-        // user to use select or nothing.
+            (mWindow, "OK", "ok", [this, okFunction] { okFunction(); }));
-        Input input;
+
-        okFunction();
+//    This code is disabled as there is no intention to provide emulator configuration or
-        // Temporarily commented out, needs to be properly cleaned up later.
+//    control via ES Desktop Edition. Let's keep the code for reference though.
+//    buttons.push_back(std::make_shared<ButtonComponent>(mWindow, "OK", "ok", [this, okFunction] {
+//        // Check if the hotkey enable button is set. if not prompt the
+//        // user to use select or nothing.
+//        Input input;
+//        okFunction();
 //        if (!mTargetConfig->getInputByName("HotKeyEnable", &input)) {
 //            mWindow->pushGui(new GuiMsgBox(mWindow, getHelpStyle(),
-//              "YOU DIDN'T CHOOSE A HOTKEY ENABLE BUTTON. THIS IS REQUIRED FOR EXITING GAMES "
+//                    "YOU DIDN'T CHOOSE A HOTKEY ENABLE BUTTON. THIS IS REQUIRED FOR EXITING "
-//              "WITH A CONTROLLER. DO YOU WANT TO USE THE SELECT BUTTON DEFAULT ? PLEASE ANSWER "
+//                    "GAMES WITH A CONTROLLER. DO YOU WANT TO USE THE SELECT BUTTON DEFAULT ? "
-//              "YES TO USE SELECT OR NO TO NOT SET A HOTKEY ENABLE BUTTON.",
+//                    "PLEASE ANSWER YES TO USE SELECT OR NO TO NOT SET A HOTKEY ENABLE BUTTON.",
 //                    "YES", [this, okFunction] {
 //                Input input;
 //                mTargetConfig->getInputByName("Select", &input);
@@ -223,18 +234,17 @@ GuiInputConfig::GuiInputConfig(
 //                okFunction();
 //            },
 //            "NO", [this, okFunction] {
-//                  // for a disabled hotkey enable button, set to a key with id 0,
+//                // For a disabled hotkey enable button, set to a key with id 0,
 //                // so the input configuration script can be backwards compatible.
 //                mTargetConfig->mapInput("HotKeyEnable", Input(DEVICE_KEYBOARD,
 //                    TYPE_KEY, 0, 1, true));
 //                okFunction();
-//              }
+//            }));
-//          ));
 //        }
 //        else {
 //            okFunction();
 //        }
-    }));
+//    }));
 
     mButtonGrid = makeButtonGrid(mWindow, buttons);
     mGrid.setEntry(mButtonGrid, Vector2i(0, 6), true, false);
@@ -354,8 +364,8 @@ bool GuiInputConfig::assign(Input input, int inputId)
     input.configured = true;
     mTargetConfig->mapInput(GUI_INPUT_CONFIG_LIST[inputId].name, input);
 
-    LOG(LogInfo) << "  Mapping [" << input.string() << "] -> " <<
+    LOG(LogInfo) << "Mapping [" << input.string() << "] to [" <<
-            GUI_INPUT_CONFIG_LIST[inputId].name;
+            GUI_INPUT_CONFIG_LIST[inputId].name << "]";
 
     return true;
 }