DolphinQt: Add setting to enable iterative input mappings.

Source/Core/DolphinQt/Config/Mapping/MappingButton.cpp

@@ -11,8 +11,6 @@
 #include "DolphinQt/Config/Mapping/IOWindow.h"
 #include "DolphinQt/Config/Mapping/MappingWidget.h"
 #include "DolphinQt/Config/Mapping/MappingWindow.h"
-#include "DolphinQt/QtUtils/BlockUserInputFilter.h"
-#include "DolphinQt/QtUtils/SetWindowDecorations.h"
 
 #include "InputCommon/ControlReference/ControlReference.h"
 #include "InputCommon/ControllerEmu/ControllerEmu.h"
@@ -67,15 +65,10 @@ static QString RefToDisplayString(ControlReference* ref)
   return expression;
 }
 
-bool MappingButton::IsInput() const
-{
-  return m_reference->IsInput();
-}
-
 MappingButton::MappingButton(MappingWidget* parent, ControlReference* ref)
     : ElidedButton(RefToDisplayString(ref)), m_mapping_window(parent->GetParent()), m_reference(ref)
 {
-  if (IsInput())
+  if (m_reference->IsInput())
   {
     setToolTip(
         tr("Left-click to detect input.\nMiddle-click to clear.\nRight-click for more options."));
@@ -88,10 +81,8 @@ MappingButton::MappingButton(MappingWidget* parent, ControlReference* ref)
   connect(this, &MappingButton::clicked, this, &MappingButton::Clicked);
 
   connect(parent, &MappingWidget::ConfigChanged, this, &MappingButton::ConfigChanged);
-  connect(this, &MappingButton::ConfigChanged, [this] {
-    setText(RefToDisplayString(m_reference));
-    m_is_mapping = false;
-  });
+  connect(this, &MappingButton::ConfigChanged,
+          [this] { setText(RefToDisplayString(m_reference)); });
 }
 
 void MappingButton::AdvancedPressed()
@@ -114,7 +105,6 @@ void MappingButton::Clicked()
     return;
   }
 
-  m_is_mapping = true;
   m_mapping_window->QueueInputDetection(this);
 }
 
@@ -131,14 +121,6 @@ void MappingButton::Clear()
   m_mapping_window->UnQueueInputDetection(this);
 }
 
-void MappingButton::StartMapping()
-{
-  // Focus just makes it more clear which button is currently being mapped.
-  setFocus();
-  setText(tr("[ Press Now ]"));
-  QtUtils::InstallKeyboardBlocker(this, this, &MappingButton::ConfigChanged);
-}
-
 void MappingButton::mouseReleaseEvent(QMouseEvent* event)
 {
   switch (event->button())

Source/Core/DolphinQt/Config/Mapping/MappingButton.h

@@ -17,12 +17,11 @@ class MappingButton : public ElidedButton
 public:
   MappingButton(MappingWidget* widget, ControlReference* ref);
 
-  bool IsInput() const;
   ControlReference* GetControlReference();
-  void StartMapping();
 
 signals:
   void ConfigChanged();
+  void QueueNextButtonMapping();
 
 private:
   void Clear();
@@ -33,5 +32,4 @@ private:
 
   MappingWindow* const m_mapping_window;
   ControlReference* const m_reference;
-  bool m_is_mapping = false;
 };

Source/Core/DolphinQt/Config/Mapping/MappingCommon.cpp

@@ -10,6 +10,7 @@
 
 #include "DolphinQt/Config/Mapping/MappingButton.h"
 #include "DolphinQt/Config/Mapping/MappingWindow.h"
+#include "DolphinQt/QtUtils/BlockUserInputFilter.h"
 
 #include "InputCommon/ControlReference/ControlReference.h"
 #include "InputCommon/ControllerEmu/ControllerEmu.h"
@@ -49,7 +50,10 @@ public:
     const auto& default_device = m_parent->GetController()->GetDefaultDevice();
     auto& button = m_clicked_mapping_buttons.front();
 
-    button->StartMapping();
+    // Focus just makes it more clear which button is currently being mapped.
+    button->setFocus();
+    button->setText(tr("[ Press Now ]"));
+    QtUtils::InstallKeyboardBlocker(button, button, &MappingButton::ConfigChanged);
 
     std::vector device_strings{default_device.ToString()};
     if (m_parent->IsCreateOtherDeviceMappingsEnabled())
@@ -73,9 +77,17 @@ public:
 
     if (m_input_detector->IsComplete())
     {
-      // No inputs detected. Cancel this and any other queued mappings.
+      auto* const button = m_clicked_mapping_buttons.back();
+
       if (!FinalizeMapping(m_input_detector->TakeResults()))
+      {
+        // No inputs detected. Cancel this and any other queued mappings.
         CancelMapping();
+      }
+      else if (m_parent->IsIterativeMappingEnabled() && m_clicked_mapping_buttons.empty())
+      {
+        button->QueueNextButtonMapping();
+      }
     }
   }
 
@@ -110,22 +122,20 @@ public:
       m_input_detection_start_timer->start(INPUT_DETECT_INITIAL_DELAY);
   }
 
-  void UnQueueInputDetection(MappingButton* button)
+  bool UnQueueInputDetection(MappingButton* button)
   {
-    std::erase(m_clicked_mapping_buttons, button);
+    if (!std::erase(m_clicked_mapping_buttons, button))
+      return false;
     button->ConfigChanged();
     UpdateInputDetectionStartTimer();
+    return true;
   }
 
   void QueueInputDetection(MappingButton* button)
   {
-    // UnQueue if already queued.
-    if (std::erase(m_clicked_mapping_buttons, button))
-    {
-      button->ConfigChanged();
-      UpdateInputDetectionStartTimer();
+    // Just UnQueue if already queued.
+    if (UnQueueInputDetection(button))
       return;
-    }
 
     button->setText(QStringLiteral("[ ... ]"));
     m_clicked_mapping_buttons.push_back(button);

Source/Core/DolphinQt/Config/Mapping/MappingWidget.cpp

@@ -314,6 +314,17 @@ void MappingWidget::CreateControl(const ControllerEmu::Control* control, QFormLa
                                   bool indicator)
 {
   auto* const button = new MappingButton(this, control->control_ref.get());
+
+  if (control->control_ref->IsInput())
+  {
+    if (m_previous_mapping_button)
+    {
+      connect(m_previous_mapping_button, &MappingButton::QueueNextButtonMapping,
+              [this, button]() { m_parent->QueueInputDetection(button); });
+    }
+    m_previous_mapping_button = button;
+  }
+
   button->setMinimumWidth(100);
   button->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
 

Source/Core/DolphinQt/Config/Mapping/MappingWidget.h

@@ -7,6 +7,7 @@
 #include <QWidget>
 
 class InputConfig;
+class MappingButton;
 class MappingNumeric;
 class MappingWindow;
 class QFormLayout;
@@ -55,4 +56,5 @@ protected:
 
 private:
   MappingWindow* m_parent;
+  MappingButton* m_previous_mapping_button = nullptr;
 };

Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp

@@ -117,9 +117,13 @@ void MappingWindow::CreateDevicesLayout()
   m_wait_for_alternate_mappings = new QAction(tr("Wait for Alternate Input Mappings"), options);
   m_wait_for_alternate_mappings->setCheckable(true);
 
+  m_iterative_mapping = new QAction(tr("Enable Iterative Input Mapping"), options);
+  m_iterative_mapping->setCheckable(true);
+
   options->addAction(refresh_action);
   options->addAction(m_other_device_mappings);
   options->addAction(m_wait_for_alternate_mappings);
+  options->addAction(m_iterative_mapping);
   options->setDefaultAction(refresh_action);
 
   m_devices_combo->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed);
@@ -368,6 +372,11 @@ bool MappingWindow::IsWaitForAlternateMappingsEnabled() const
   return m_wait_for_alternate_mappings->isChecked();
 }
 
+bool MappingWindow::IsIterativeMappingEnabled() const
+{
+  return m_iterative_mapping->isChecked();
+}
+
 void MappingWindow::RefreshDevices()
 {
   g_controller_interface.RefreshDevices();

Source/Core/DolphinQt/Config/Mapping/MappingWindow.h

@@ -53,6 +53,7 @@ public:
   ControllerEmu::EmulatedController* GetController() const;
   bool IsCreateOtherDeviceMappingsEnabled() const;
   bool IsWaitForAlternateMappingsEnabled() const;
+  bool IsIterativeMappingEnabled() const;
   void ShowExtensionMotionTabs(bool show);
   void ActivateExtensionTab();
 
@@ -106,6 +107,7 @@ private:
   QComboBox* m_devices_combo;
   QAction* m_other_device_mappings;
   QAction* m_wait_for_alternate_mappings;
+  QAction* m_iterative_mapping;
 
   // Profiles
   QGroupBox* m_profiles_box;