Qt: Implement save state menus

src/duckstation-qt/mainwindow.cpp

@@ -22,7 +22,6 @@ MainWindow::MainWindow(QtHostInterface* host_interface) : QMainWindow(nullptr),
   m_ui.setupUi(this);
   setupAdditionalUi();
   connectSignals();
-  populateLoadSaveStateMenus(QString());
 
   resize(750, 690);
 }
@@ -136,7 +135,7 @@ void MainWindow::onSystemPerformanceCountersUpdated(float speed, float fps, floa
 
 void MainWindow::onRunningGameChanged(QString filename, QString game_code, QString game_title)
 {
-  populateLoadSaveStateMenus(game_code);
+  m_host_interface->populateSaveStateMenus(game_code.toStdString().c_str(), m_ui.menuLoadState, m_ui.menuSaveState);
   if (game_title.isEmpty())
     setWindowTitle(tr("DuckStation"));
   else
@@ -367,14 +366,16 @@ void MainWindow::connectSignals()
     if (!entry)
     {
       m_ui.statusBar->clearMessage();
-      populateLoadSaveStateMenus(QString());
+      m_host_interface->populateSaveStateMenus("", m_ui.menuLoadState, m_ui.menuSaveState);
       return;
     }
 
     m_ui.statusBar->showMessage(QString::fromStdString(entry->path));
-    populateLoadSaveStateMenus(QString::fromStdString(entry->code));
+    m_host_interface->populateSaveStateMenus(entry->code.c_str(), m_ui.menuLoadState, m_ui.menuSaveState);
   });
 
+  m_host_interface->populateSaveStateMenus(nullptr, m_ui.menuLoadState, m_ui.menuSaveState);
+
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.actionDebugShowVRAM, "Debug/ShowVRAM");
   SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.actionDebugDumpCPUtoVRAMCopies,
                                                "Debug/DumpCPUToVRAMCopies");
@@ -443,39 +444,6 @@ void MainWindow::updateDebugMenuGPURenderer()
   }
 }
 
-void MainWindow::populateLoadSaveStateMenus(QString game_code)
-{
-  static constexpr int NUM_SAVE_STATE_SLOTS = 10;
-
-  QMenu* const load_menu = m_ui.menuLoadState;
-  QMenu* const save_menu = m_ui.menuSaveState;
-
-  load_menu->clear();
-  save_menu->clear();
-
-  load_menu->addAction(tr("Resume State"));
-  load_menu->addSeparator();
-
-  for (int i = 0; i < NUM_SAVE_STATE_SLOTS; i++)
-  {
-    // TODO: Do we want to test for the existance of these on disk here?
-    load_menu->addAction(tr("Global Save %1 (2020-01-01 00:01:02)").arg(i + 1));
-    save_menu->addAction(tr("Global Save %1").arg(i + 1));
-  }
-
-  if (!game_code.isEmpty())
-  {
-    load_menu->addSeparator();
-    save_menu->addSeparator();
-
-    for (int i = 0; i < NUM_SAVE_STATE_SLOTS; i++)
-    {
-      load_menu->addAction(tr("Game Save %1 (2020-01-01 00:01:02)").arg(i + 1));
-      save_menu->addAction(tr("Game Save %1").arg(i + 1));
-    }
-  }
-}
-
 void MainWindow::closeEvent(QCloseEvent* event)
 {
   m_host_interface->powerOffSystem(true, true);

src/duckstation-qt/mainwindow.h

@@ -54,7 +54,6 @@ private:
   void doSettings(SettingsDialog::Category category = SettingsDialog::Category::Count);
   void updateDebugMenuCPUExecutionMode();
   void updateDebugMenuGPURenderer();
-  void populateLoadSaveStateMenus(QString game_code);
 
   Ui::MainWindow m_ui;
 

src/duckstation-qt/qthostinterface.cpp

@@ -11,8 +11,10 @@
 #include "qtsettingsinterface.h"
 #include "qtutils.h"
 #include <QtCore/QCoreApplication>
+#include <QtCore/QDateTime>
 #include <QtCore/QDebug>
 #include <QtCore/QEventLoop>
+#include <QtWidgets/QMenu>
 #include <QtWidgets/QMessageBox>
 #include <memory>
 Log_SetChannel(QtHostInterface);
@@ -354,15 +356,22 @@ std::vector<QtHostInterface::HotkeyInfo> QtHostInterface::getHotkeyList() const
     {QStringLiteral("DecreaseResolutionScale"), QStringLiteral("Decrease Resolution Scale"),
      QStringLiteral("Graphics")}};
 
-  for (u32 i = 1; i <= NUM_SAVE_STATE_HOTKEYS; i++)
+  for (u32 global_i = 0; global_i < 2; global_i++)
   {
-    hotkeys.push_back(
-      {QStringLiteral("LoadState%1").arg(i), QStringLiteral("Load State %1").arg(i), QStringLiteral("Save States")});
-  }
-  for (u32 i = 1; i <= NUM_SAVE_STATE_HOTKEYS; i++)
-  {
-    hotkeys.push_back(
-      {QStringLiteral("SaveState%1").arg(i), QStringLiteral("Save State %1").arg(i), QStringLiteral("Save States")});
+    const bool global = ConvertToBoolUnchecked(global_i);
+    const u32 count = global ? GLOBAL_SAVE_STATE_SLOTS : PER_GAME_SAVE_STATE_SLOTS;
+    for (u32 i = 1; i <= count; i++)
+    {
+      hotkeys.push_back({QStringLiteral("Load%1State%2").arg(global ? "Global" : "Game").arg(i),
+                         QStringLiteral("Load %1 State %2").arg(global ? tr("Global") : tr("Game")).arg(i),
+                         QStringLiteral("Save States")});
+    }
+    for (u32 slot = 1; slot <= count; slot++)
+    {
+      hotkeys.push_back({QStringLiteral("Save%1State%2").arg(global ? "Global" : "Game").arg(slot),
+                         QStringLiteral("Save %1 State %2").arg(global ? tr("Global") : tr("Game")).arg(slot),
+                         QStringLiteral("Save States")});
+    }
   }
 
   return hotkeys;
@@ -408,17 +417,21 @@ void QtHostInterface::updateHotkeyInputMap()
       ModifyResolutionScale(-1);
   });
 
-  for (u32 i = 1; i <= NUM_SAVE_STATE_HOTKEYS; i++)
+  for (u32 global_i = 0; global_i < 2; global_i++)
   {
-    hk(QStringLiteral("LoadState%1").arg(i), [this, i](bool pressed) {
-      if (!pressed)
-        HostInterface::LoadState(StringUtil::StdStringFromFormat("savestate_%u.bin", i).c_str());
-    });
-
-    hk(QStringLiteral("SaveState%1").arg(i), [this, i](bool pressed) {
-      if (!pressed)
-        HostInterface::SaveState(StringUtil::StdStringFromFormat("savestate_%u.bin", i).c_str());
-    });
+    const bool global = ConvertToBoolUnchecked(global_i);
+    const u32 count = global ? GLOBAL_SAVE_STATE_SLOTS : PER_GAME_SAVE_STATE_SLOTS;
+    for (u32 slot = 1; slot <= count; slot++)
+    {
+      hk(QStringLiteral("Load%1State%2").arg(global ? "Global" : "Game").arg(slot), [this, global, slot](bool pressed) {
+        if (!pressed)
+          loadState(global, slot);
+      });
+      hk(QStringLiteral("Save%1State%2").arg(global ? "Global" : "Game").arg(slot), [this, global, slot](bool pressed) {
+        if (!pressed)
+          saveState(global, slot);
+      });
+    }
   }
 }
 
@@ -555,6 +568,106 @@ void QtHostInterface::createAudioStream()
   }
 }
 
+void QtHostInterface::populateSaveStateMenus(const char* game_code, QMenu* load_menu, QMenu* save_menu)
+{
+  const std::vector<SaveStateInfo> available_states(GetAvailableSaveStates(game_code));
+
+  load_menu->clear();
+  if (!available_states.empty())
+  {
+    bool last_global = available_states.front().global;
+    for (const SaveStateInfo& ssi : available_states)
+    {
+      const s32 slot = ssi.slot;
+      const bool global = ssi.global;
+      const QDateTime timestamp(QDateTime::fromSecsSinceEpoch(static_cast<qint64>(ssi.timestamp)));
+      const QString path(QString::fromStdString(ssi.path));
+
+      QString title = tr("%1 Save %2 (%3)")
+                        .arg(global ? tr("Global") : tr("Game"))
+                        .arg(slot)
+                        .arg(timestamp.toString(Qt::SystemLocaleShortDate));
+
+      if (global != last_global)
+      {
+        load_menu->addSeparator();
+        last_global = global;
+      }
+
+      QAction* action = load_menu->addAction(title);
+      connect(action, &QAction::triggered, [this, path]() { loadState(path); });
+    }
+  }
+
+  save_menu->clear();
+  if (game_code && std::strlen(game_code) > 0)
+  {
+    for (s32 i = 1; i <= PER_GAME_SAVE_STATE_SLOTS; i++)
+    {
+      QAction* action = save_menu->addAction(tr("Game Save %1").arg(i));
+      connect(action, &QAction::triggered, [this, i]() { saveState(i, false); });
+    }
+
+    save_menu->addSeparator();
+  }
+
+  for (s32 i = 1; i <= GLOBAL_SAVE_STATE_SLOTS; i++)
+  {
+    QAction* action = save_menu->addAction(tr("Global Save %1").arg(i));
+    connect(action, &QAction::triggered, [this, i]() { saveState(i, true); });
+  }
+}
+
+void QtHostInterface::loadState(QString filename)
+{
+  if (!isOnWorkerThread())
+  {
+    QMetaObject::invokeMethod(this, "loadState", Qt::QueuedConnection, Q_ARG(QString, filename));
+    return;
+  }
+
+  if (m_system)
+    LoadState(filename.toStdString().c_str());
+  else
+    doBootSystem(QString(), filename);
+}
+
+void QtHostInterface::loadState(bool global, qint32 slot)
+{
+  if (!isOnWorkerThread())
+  {
+    QMetaObject::invokeMethod(this, "loadState", Qt::QueuedConnection, Q_ARG(bool, global), Q_ARG(qint32, slot));
+    return;
+  }
+
+  if (m_system)
+  {
+    LoadState(slot, global);
+    return;
+  }
+
+  if (!global)
+  {
+    // can't load a non-global system without a game code
+    return;
+  }
+
+  loadState(QString::fromStdString(GetGlobalSaveStateFileName(slot)));
+}
+
+void QtHostInterface::saveState(bool global, qint32 slot, bool block_until_done /* = false */)
+{
+  if (!isOnWorkerThread())
+  {
+    QMetaObject::invokeMethod(this, "saveState", block_until_done ? Qt::BlockingQueuedConnection : Qt::QueuedConnection,
+                              Q_ARG(bool, global), Q_ARG(qint32, slot), Q_ARG(bool, block_until_done));
+    return;
+  }
+
+  if (m_system)
+    SaveState(global, slot);
+}
+
 void QtHostInterface::createThread()
 {
   m_original_thread = QThread::currentThread();

src/duckstation-qt/qthostinterface.h

@@ -16,6 +16,7 @@
 class ByteStream;
 
 class QEventLoop;
+class QMenu;
 class QWidget;
 
 class GameList;
@@ -61,6 +62,8 @@ public:
   };
   std::vector<HotkeyInfo> getHotkeyList() const;
 
+  void populateSaveStateMenus(const char* game_code, QMenu* load_menu, QMenu* save_menu);
+
 Q_SIGNALS:
   void errorReported(QString message);
   void messageReported(QString message);
@@ -81,6 +84,9 @@ public Q_SLOTS:
   void resetSystem();
   void pauseSystem(bool paused);
   void changeDisc(QString new_disc_filename);
+  void loadState(QString filename);
+  void loadState(bool global, qint32 slot);
+  void saveState(bool global, qint32 slot, bool block_until_done = false);
 
 private Q_SLOTS:
   void doStopThread();
@@ -97,11 +103,6 @@ protected:
 private:
   using InputButtonHandler = std::function<void(bool)>;
 
-  enum : u32
-  {
-    NUM_SAVE_STATE_HOTKEYS = 8
-  };
-
   class Thread : public QThread
   {
   public: