Use enum for screen sizing

2 files changed, 23 insertions, 12 deletions

diff --git a/src/frontend/qt_sdl/Config.h b/src/frontend/qt_sdl/Config.h
index 0ad589f..bce6ea2 100644
--- a/src/frontend/qt_sdl/Config.h
+++ b/src/frontend/qt_sdl/Config.h
@@ -38,6 +38,17 @@ enum
     HK_MAX
 };
 
+enum
+{
+    screenSizing_Even,
+    screenSizing_EmphTop,
+    screenSizing_EmphBop,
+    screenSizing_Auto,
+    screenSizing_TopOnly,
+    screenSizing_BotOnly,
+    screenSizing_MAX,
+};
+
 namespace Config
 {
 
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index c31e78a..d970514 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -503,7 +503,7 @@ void EmuThread::run()
             micProcess();
 
             // auto screen layout
-            if (Config::ScreenSizing == 3)
+            if (Config::ScreenSizing == screenSizing_Auto)
             {
                 mainScreenPos[2] = mainScreenPos[1];
                 mainScreenPos[1] = mainScreenPos[0];
@@ -515,14 +515,14 @@ void EmuThread::run()
                 {
                     // constant flickering, likely displaying 3D on both screens
                     // TODO: when both screens are used for 2D only...???
-                    guess = 0;
+                    guess = screenSizing_Even;
                 }
                 else
                 {
                     if (mainScreenPos[0] == 1)
-                        guess = 1;
+                        guess = screenSizing_EmphTop;
                     else
-                        guess = 2;
+                        guess = screenSizing_EmphBop;
                 }
 
                 if (guess != autoScreenSizing)
@@ -1557,7 +1557,7 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
 
             const char* screensizing[] = {"Even", "Emphasize top", "Emphasize bottom", "Auto", "Top only", "Bottom only"};
 
-            for (int i = 0; i < 6; i++)
+            for (int i = 0; i < screenSizing_MAX; i++)
             {
                 actScreenSizing[i] = submenu->addAction(QString(screensizing[i]));
                 actScreenSizing[i]->setActionGroup(grpScreenSizing);
@@ -2778,18 +2778,18 @@ void MainWindow::onChangeScreenSwap(bool checked)
     Config::ScreenSwap = checked?1:0;
 
     // Swap between top and bottom screen when displaying one screen. 
-    if (Config::ScreenSizing == 4)
+    if (Config::ScreenSizing == screenSizing_TopOnly)
     {
         // Bottom Screen.
-        Config::ScreenSizing = 5;
-        actScreenSizing[4]->setChecked(false);
+        Config::ScreenSizing = screenSizing_BotOnly;
+        actScreenSizing[screenSizing_TopOnly]->setChecked(false);
         actScreenSizing[Config::ScreenSizing]->setChecked(true);
     }
-    else if (Config::ScreenSizing == 5)
+    else if (Config::ScreenSizing == screenSizing_BotOnly)
     {
         // Top Screen.
-        Config::ScreenSizing = 4;
-        actScreenSizing[5]->setChecked(false);
+        Config::ScreenSizing = screenSizing_TopOnly;
+        actScreenSizing[screenSizing_BotOnly]->setChecked(false);
         actScreenSizing[Config::ScreenSizing]->setChecked(true);
     }
     
@@ -3016,7 +3016,7 @@ int main(int argc, char** argv)
     SANITIZE(Config::ScreenRotation, 0, 3);
     SANITIZE(Config::ScreenGap, 0, 500);
     SANITIZE(Config::ScreenLayout, 0, 3);
-    SANITIZE(Config::ScreenSizing, 0, 5);
+    SANITIZE(Config::ScreenSizing, 0, (int)screenSizing_MAX);
     SANITIZE(Config::ScreenAspectTop, 0, 4);
     SANITIZE(Config::ScreenAspectBot, 0, 4);
 #undef SANITIZE