[Qt] XSideBar now handles controller navigation

(Dpad only for now)

src/xenia/ui/qt/tabs/split_tab.cc

@@ -86,16 +86,13 @@ void SplitTab::Build() {
 
     sidebar_->addSpacing(20);
 
-    QButtonGroup* bg = new QButtonGroup();
-
     // loop over sidebar button items and connect them to slots
     int counter = 0;
     for (auto it = sidebar_items_.begin(); it != sidebar_items_.end();
          ++it, ++counter) {
       SidebarItem& item = *it;
       auto btn = sidebar_->addAction(item.glyph(), item.title());
       btn->setCheckable(true);
-      bg->addButton(btn);
 
       // set the first item to checked
       if (counter == 0) {

src/xenia/ui/qt/widgets/sidebar.cc

@@ -1,15 +1,20 @@
 #include "xenia/ui/qt/widgets/sidebar.h"
 
+#include <QButtonGroup>
+
+#include "xenia/ui/qt/events/hid_event.h"
+
 namespace xe {
 namespace ui {
 namespace qt {
 
-XSideBar::XSideBar() : Themeable<QToolBar>("XSideBar") {}
+XSideBar::XSideBar()
+    : Themeable<QToolBar>("XSideBar"), buttons_(new QButtonGroup(this)) {}
 
 XSideBarButton* XSideBar::addAction(const QString& text) {
   auto button = new XSideBarButton(text);
 
-  buttons_.append(button);
+  buttons_->addButton(button);
   QToolBar::addWidget(button);
 
   return button;
@@ -18,7 +23,7 @@ XSideBarButton* XSideBar::addAction(const QString& text) {
 XSideBarButton* XSideBar::addAction(QChar glyph, const QString& text) {
   auto button = new XSideBarButton(glyph, text);
 
-  buttons_.append(button);
+  buttons_->addButton(button);
   QToolBar::addWidget(button);
 
   return button;
@@ -31,6 +36,42 @@ QWidget* XSideBar::addSpacing(int size) {
   return spacer;
 }
 
+bool XSideBar::event(QEvent* event) {
+  if (event->type() == HidEvent::ButtonPressType) {
+    auto button_press_event = static_cast<ButtonPressEvent*>(event);
+    // skip repeat presses
+    if (button_press_event->is_repeat()) {
+      return false;
+    }
+
+    int direction = 0;
+
+    if (button_press_event->buttons() & kInputDpadDown) {
+      direction = -1;
+    } else if (button_press_event->buttons() & kInputDpadUp) {
+      direction = 1;
+    }
+
+    if (direction != 0) {
+      for (const auto& btn : buttons_->buttons()) {
+        if (btn->hasFocus()) {
+          if (int id = buttons_->id(btn); id != -1) {
+            if (auto next = buttons_->button(id + direction)) {
+              next->setFocus();
+              break;
+            }
+          }
+        }
+      }
+
+      event->accept();
+      return true;
+    }
+  }
+
+  return Themeable<QToolBar>::event(event);
+}
+
 }  // namespace qt
 }  // namespace ui
-}  // namespace xe
+}  // namespace xe

src/xenia/ui/qt/widgets/sidebar.h

@@ -18,8 +18,13 @@ class XSideBar : public Themeable<QToolBar> {
 
   QWidget* addSpacing(int size);
 
+  QButtonGroup* buttons() const { return buttons_; }
+
+ protected:
+  bool event(QEvent* event) override;
+
  private:
-  QVector<XSideBarButton*> buttons_;
+  QButtonGroup* buttons_;
 };
 
 }  // namespace qt