Qt: Add GamepadButtonEvent and remove signal associated; use this for button controls in emulator

src/platform/qt/CMakeLists.txt

@@ -44,6 +44,7 @@ set(SOURCE_FILES
 	GIFView.cpp
 	GameController.cpp
 	GamePakView.cpp
+	GamepadButtonEvent.cpp
 	InputController.cpp
 	KeyEditor.cpp
 	LoadSaveState.cpp

src/platform/qt/GBAKeyEditor.cpp

@@ -112,7 +112,6 @@ GBAKeyEditor::GBAKeyEditor(InputController* controller, int type, QWidget* paren
 
 #ifdef BUILD_SDL
 	if (type == SDL_BINDING_BUTTON) {
-		connect(m_controller, SIGNAL(buttonPressed(int)), this, SLOT(setButton(int)));
 		connect(m_controller, SIGNAL(axisChanged(int, int32_t)), this, SLOT(setAxisValue(int, int32_t)));
 	}
 #endif
@@ -237,14 +236,6 @@ void GBAKeyEditor::setAxisValue(int axis, int32_t value) {
 	KeyEditor* focused = *m_currentKey;
 	focused->setValueAxis(axis, value);
 }
-
-void GBAKeyEditor::setButton(int button) {
-	if (!findFocus()) {
-		return;
-	}
-	KeyEditor* focused = *m_currentKey;
-	focused->setValueButton(button);
-}
 #endif
 
 KeyEditor* GBAKeyEditor::keyById(GBAKey key) {

src/platform/qt/GBAKeyEditor.h

@@ -40,7 +40,6 @@ private slots:
 	void save();
 #ifdef BUILD_SDL
 	void setAxisValue(int axis, int32_t value);
-	void setButton(int button);
 #endif
 
 private:

src/platform/qt/GamepadButtonEvent.cpp

@@ -0,0 +1,41 @@
+/* Copyright (c) 2013-2015 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "GamepadButtonEvent.h"
+
+#include "InputController.h"
+
+using namespace QGBA;
+
+QEvent::Type GamepadButtonEvent::s_downType = QEvent::None;
+QEvent::Type GamepadButtonEvent::s_upType = QEvent::None;
+
+GamepadButtonEvent::GamepadButtonEvent(QEvent::Type type, int button, InputController* controller)
+	: QEvent(type)
+	, m_button(button)
+	, m_controller(controller)
+	, m_key(GBA_KEY_NONE)
+{
+	ignore();
+#ifdef BUILD_SDL
+	if (controller) {
+		m_key = GBAInputMapKey(controller->map(), SDL_BINDING_BUTTON, button);
+	}
+#endif
+}
+
+QEvent::Type GamepadButtonEvent::Down() {
+	if (s_downType == None) {
+		s_downType = static_cast<Type>(registerEventType());
+	}
+	return s_downType;
+}
+
+QEvent::Type GamepadButtonEvent::Up() {
+	if (s_upType == None) {
+		s_upType = static_cast<Type>(registerEventType());
+	}
+	return s_upType;
+}

src/platform/qt/GamepadButtonEvent.h

@@ -0,0 +1,40 @@
+/* Copyright (c) 2013-2015 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef QGBA_GAMEPAD_BUTTON_EVENT
+#define QGBA_GAMEPAD_BUTTON_EVENT
+
+#include <QEvent>
+
+extern "C" {
+#include "gba-input.h"
+}
+
+namespace QGBA {
+
+class InputController;
+
+class GamepadButtonEvent : public QEvent  {
+public:
+	GamepadButtonEvent(Type type, int button, InputController* controller = nullptr);
+
+	int value() const { return m_button; }
+	GBAKey gbaKey() const { return m_key; }
+
+	static Type Down();
+	static Type Up();
+
+private:
+	static Type s_downType;
+	static Type s_upType;
+
+	int m_button;
+	InputController* m_controller;
+	GBAKey m_key;
+};
+
+}
+
+#endif

src/platform/qt/InputController.cpp

@@ -6,8 +6,11 @@
 #include "InputController.h"
 
 #include "ConfigController.h"
+#include "GamepadButtonEvent.h"
 
+#include <QApplication>
 #include <QTimer>
+#include <QWidget>
 
 extern "C" {
 #include "util/configuration.h"
@@ -91,6 +94,9 @@ int InputController::testSDLEvents() {
 		if (key == GBA_KEY_NONE) {
 			continue;
 		}
+		if (hasPendingEvent(key)) {
+			continue;
+		}
 		if (SDL_JoystickGetButton(joystick, i)) {
 			activeButtons |= 1 << key;
 		}
@@ -191,10 +197,29 @@ void InputController::testGamepad() {
 	activeButtons.subtract(oldButtons);
 	oldButtons.subtract(m_activeButtons);
 	for (int button : activeButtons) {
-		emit buttonPressed(button);
+		GamepadButtonEvent* event = new GamepadButtonEvent(GamepadButtonEvent::Down(), button, this);
+		postPendingEvent(event->gbaKey());
+		QApplication::sendEvent(QApplication::focusWidget(), event);
+		if (!event->isAccepted()) {
+			clearPendingEvent(event->gbaKey());
+		}
 	}
 	for (int button : oldButtons) {
-		emit buttonReleased(button);
+		GamepadButtonEvent* event = new GamepadButtonEvent(GamepadButtonEvent::Up(), button, this);
+		clearPendingEvent(event->gbaKey());
+		QApplication::sendEvent(QApplication::focusWidget(), event);
 	}
 #endif
 }
+
+void InputController::postPendingEvent(GBAKey key) {
+	m_pendingEvents.insert(key);
+}
+
+void InputController::clearPendingEvent(GBAKey key) {
+	m_pendingEvents.remove(key);
+}
+
+bool InputController::hasPendingEvent(GBAKey key) const {
+	return m_pendingEvents.contains(key);
+}

src/platform/qt/InputController.h

@@ -59,13 +59,15 @@ public:
 
 signals:
 	void axisChanged(int axis, int32_t value);
-	void buttonPressed(int button);
-	void buttonReleased(int button);
 
 public slots:
 	void testGamepad();
 
 private:
+	void postPendingEvent(GBAKey);
+	void clearPendingEvent(GBAKey);
+	bool hasPendingEvent(GBAKey) const;
+
 	GBAInputMap m_inputMap;
 	ConfigController* m_config;
 
@@ -76,6 +78,8 @@ private:
 	QSet<int> m_activeButtons;
 	QSet<QPair<int, int32_t>> m_activeAxes;
 	QTimer* m_gamepadTimer;
+
+	QSet<GBAKey> m_pendingEvents;
 };
 
 }

src/platform/qt/KeyEditor.cpp

@@ -5,6 +5,8 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "KeyEditor.h"
 
+#include "GamepadButtonEvent.h"
+
 #include <QKeyEvent>
 
 using namespace QGBA;
@@ -56,3 +58,15 @@ void KeyEditor::keyPressEvent(QKeyEvent* event) {
 	}
 	event->accept();
 }
+
+bool KeyEditor::event(QEvent* event) {
+	if (!m_button) {
+		return QWidget::event(event);
+	}
+	if (event->type() == GamepadButtonEvent::Down()) {
+		setValueButton(static_cast<GamepadButtonEvent*>(event)->value());
+		event->accept();
+		return true;
+	}
+	return QWidget::event(event);
+}

src/platform/qt/KeyEditor.h

@@ -35,6 +35,7 @@ signals:
 
 protected:
 	virtual void keyPressEvent(QKeyEvent* event) override;
+	virtual bool event(QEvent* event) override;
 
 private:
 	int m_key;

src/platform/qt/LoadSaveState.cpp

@@ -6,6 +6,7 @@
 #include "LoadSaveState.h"
 
 #include "GameController.h"
+#include "GamepadButtonEvent.h"
 #include "VFileDevice.h"
 
 #include <QKeyEvent>
@@ -104,6 +105,40 @@ bool LoadSaveState::eventFilter(QObject* object, QEvent* event) {
 			}
 		}
 	}
+	if (event->type() == GamepadButtonEvent::Down()) {
+		int column = m_currentFocus % 3;
+		int row = m_currentFocus - column;
+		switch (static_cast<GamepadButtonEvent*>(event)->gbaKey()) {
+		case GBA_KEY_UP:
+			row += 6;
+			break;
+		case GBA_KEY_DOWN:
+			row += 3;
+			break;
+		case GBA_KEY_LEFT:
+			column += 2;
+			break;
+		case GBA_KEY_RIGHT:
+			column += 1;
+			break;
+		case GBA_KEY_B:
+			close();
+			break;
+		case GBA_KEY_A:
+		case GBA_KEY_START:
+			event->accept();
+			triggerState(m_currentFocus + 1);
+			return true;
+		default:
+			return false;
+		}
+		column %= 3;
+		row %= 9;
+		m_currentFocus = column + row;
+		m_slots[m_currentFocus]->setFocus();
+		event->accept();
+		return true;
+	}
 	return false;
 }
 

src/platform/qt/LoadSaveState.h

@@ -13,6 +13,7 @@
 namespace QGBA {
 
 class GameController;
+class InputController;
 class SavestateButton;
 
 enum class LoadSave {
@@ -28,6 +29,7 @@ public:
 
 	LoadSaveState(GameController* controller, QWidget* parent = nullptr);
 
+	void setInputController(InputController* controller);
 	void setMode(LoadSave mode);
 
 signals:
@@ -45,6 +47,7 @@ private:
 
 	Ui::LoadSaveState m_ui;
 	GameController* m_controller;
+	InputController* m_inputController;
 	SavestateButton* m_slots[NUM_SLOTS];
 	LoadSave m_mode;
 

src/platform/qt/ShortcutController.cpp

@@ -5,6 +5,8 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "ShortcutController.h"
 
+#include "GamepadButtonEvent.h"
+
 #include <QAction>
 #include <QMenu>
 
@@ -166,16 +168,20 @@ void ShortcutController::updateButton(const QModelIndex& index, int button) {
 	emit dataChanged(createIndex(index.row(), 0, index.internalId()), createIndex(index.row(), 2, index.internalId()));
 }
 
-void ShortcutController::pressButton(int button) {
-	auto item = m_buttons.find(button);
-	if (item == m_buttons.end()) {
-		return;
+bool ShortcutController::eventFilter(QObject*, QEvent* event) {
+	if (event->type() == GamepadButtonEvent::Down()) {
+		auto item = m_buttons.find(static_cast<GamepadButtonEvent*>(event)->value());
+		if (item == m_buttons.end()) {
+			return false;
+		}
+		QAction* action = item.value()->action();
+		if (action->isEnabled()) {
+			action->trigger();
+		}
+		event->accept();
+		return true;
 	}
-	QAction* action = item.value()->action();
-	if (!action->isEnabled()) {
-		return;
-	}
-	action->trigger();
+	return false;
 }
 
 ShortcutController::ShortcutItem::ShortcutItem(QAction* action, const QString& name)

src/platform/qt/ShortcutController.h

@@ -36,8 +36,8 @@ public:
 	void updateKey(const QModelIndex& index, const QKeySequence& keySequence);
 	void updateButton(const QModelIndex& index, int button);
 
-private slots:
-	void pressButton(int button);
+protected:
+	bool eventFilter(QObject*, QEvent*) override;
 
 private:
 	class ShortcutItem {

src/platform/qt/ShortcutView.cpp

@@ -5,6 +5,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "ShortcutView.h"
 
+#include "GamepadButtonEvent.h"
 #include "ShortcutController.h"
 
 using namespace QGBA;
@@ -15,10 +16,11 @@ ShortcutView::ShortcutView(QWidget* parent)
 	, m_inputController(nullptr)
 {
 	m_ui.setupUi(this);
+	m_ui.keyEdit->setValueButton(-1);
 
 	connect(m_ui.keySequenceEdit, SIGNAL(editingFinished()), this, SLOT(updateKey()));
 	connect(m_ui.keyEdit, SIGNAL(valueChanged(int)), this, SLOT(updateButton(int)));
-	connect(m_ui.shortcutTable, SIGNAL(doubleClicked(const QModelIndex&)), this, SLOT(loadKey(const QModelIndex&)));
+	connect(m_ui.shortcutTable, SIGNAL(doubleClicked(const QModelIndex&)), this, SLOT(load(const QModelIndex&)));
 }
 
 void ShortcutView::setController(ShortcutController* controller) {
@@ -28,11 +30,19 @@ void ShortcutView::setController(ShortcutController* controller) {
 
 void ShortcutView::setInputController(InputController* controller) {
 	m_inputController = controller;
-	connect(controller, SIGNAL(buttonPressed(int)), m_ui.keyEdit, SLOT(setValueButton(int)));
 	connect(controller, SIGNAL(axisChanged(int, int32_t)), m_ui.keyEdit, SLOT(setValueAxis(int, int32_t)));
 }
 
-void ShortcutView::loadKey(const QModelIndex& index) {
+bool ShortcutView::event(QEvent* event) {
+	if (event->type() == GamepadButtonEvent::Down()) {
+		updateButton(static_cast<GamepadButtonEvent*>(event)->value());
+		event->accept();
+		return true;
+	}
+	return QWidget::event(event);
+}
+
+void ShortcutView::load(const QModelIndex& index) {
 	if (!m_controller) {
 		return;
 	}
@@ -40,8 +50,11 @@ void ShortcutView::loadKey(const QModelIndex& index) {
 	if (!action) {
 		return;
 	}
-	m_ui.keySequenceEdit->setFocus();
-	m_ui.keySequenceEdit->setKeySequence(action->shortcut());
+	if (m_ui.gamepadButton->isChecked()) {
+		loadButton();
+	} else {
+		loadKey(action);
+	}
 }
 
 void ShortcutView::updateKey() {
@@ -59,3 +72,12 @@ void ShortcutView::updateButton(int button) {
 	m_controller->updateButton(m_ui.shortcutTable->selectionModel()->currentIndex(), button);
 
 }
+void ShortcutView::loadKey(const QAction* action) {
+	m_ui.keySequenceEdit->setFocus();
+	m_ui.keySequenceEdit->setKeySequence(action->shortcut());
+}
+
+void ShortcutView::loadButton() {
+	m_ui.keyEdit->setFocus();
+	m_ui.keyEdit->setValueButton(-1); // TODO: Real value
+}

src/platform/qt/ShortcutView.h

@@ -25,12 +25,18 @@ public:
 	void setController(ShortcutController* controller);
 	void setInputController(InputController* controller);
 
+protected:
+	virtual bool event(QEvent* event) override;
+
 private slots:
-	void loadKey(const QModelIndex&);
+	void load(const QModelIndex&);
 	void updateKey();
 	void updateButton(int button);
 
 private:
+	void loadKey(const QAction*);
+	void loadButton();
+
 	Ui::ShortcutView m_ui;
 
 	ShortcutController* m_controller;

src/platform/qt/Window.cpp

@@ -93,8 +93,6 @@ Window::Window(ConfigController* config, QWidget* parent)
 	connect(this, SIGNAL(fpsTargetChanged(float)), m_controller, SLOT(setFPSTarget(float)));
 	connect(&m_fpsTimer, SIGNAL(timeout()), this, SLOT(showFPS()));
 
-	connect(&m_inputController, SIGNAL(buttonPressed(int)), m_shortcutController, SLOT(pressButton(int)));
-
 	m_logView->setLevels(GBA_LOG_WARN | GBA_LOG_ERROR | GBA_LOG_FATAL);
 	m_fpsTimer.setInterval(FPS_TIMER_INTERVAL);
 
@@ -431,6 +429,7 @@ void Window::setupMenu(QMenuBar* menubar) {
 	menubar->clear();
 	QMenu* fileMenu = menubar->addMenu(tr("&File"));
 	m_shortcutController->addMenu(fileMenu);
+	installEventFilter(m_shortcutController);
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &ROM..."), this, SLOT(selectROM()), QKeySequence::Open), "loadROM");
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &BIOS..."), this, SLOT(selectBIOS())), "loadBIOS");
 	addControlledAction(fileMenu, fileMenu->addAction(tr("Load &patch..."), this, SLOT(selectPatch())), "loadPatch");