Qt: Add hotkey for increasing/decreasing resolution scale

src/duckstation-qt/qthostinterface.cpp

@@ -346,7 +346,10 @@ std::vector<QtHostInterface::HotkeyInfo> QtHostInterface::getHotkeyList() const
     {QStringLiteral("Pause"), QStringLiteral("Toggle Pause"), QStringLiteral("General")},
     {QStringLiteral("ToggleSoftwareRendering"), QStringLiteral("Toggle Software Rendering"),
      QStringLiteral("Graphics")},
-  };
+    {QStringLiteral("IncreaseResolutionScale"), QStringLiteral("Increase Resolution Scale"),
+     QStringLiteral("Graphics")},
+    {QStringLiteral("DecreaseResolutionScale"), QStringLiteral("Decrease Resolution Scale"),
+     QStringLiteral("Graphics")}};
 
   for (u32 i = 1; i <= NUM_SAVE_STATE_HOTKEYS; i++)
   {
@@ -392,6 +395,16 @@ void QtHostInterface::updateHotkeyInputMap()
       ToggleSoftwareRendering();
   });
 
+  hk(QStringLiteral("IncreaseResolutionScale"), [this](bool pressed) {
+    if (!pressed)
+      ModifyResolutionScale(1);
+  });
+
+  hk(QStringLiteral("DecreaseResolutionScale"), [this](bool pressed) {
+    if (!pressed)
+      ModifyResolutionScale(-1);
+  });
+
   for (u32 i = 1; i <= NUM_SAVE_STATE_HOTKEYS; i++)
   {
     hk(QStringLiteral("LoadState%1").arg(i), [this, i](bool pressed) {