BASE: Add command line stretch mode arg

README

@@ -1527,6 +1527,7 @@ arguments -- see the next section.
   -f, --fullscreen         Force full-screen mode
   -F, --no-fullscreen      Force windowed mode
   -g, --gfx-mode=MODE      Select graphics scaler (see also section 5.3)
+  --stretch-mode=MODE      Select stretch mode (center, integral, fit, stretch)
   --filtering              Force filtered graphics mode
   --no-filtering           Force unfiltered graphics mode
 

base/commandLine.cpp

@@ -93,6 +93,7 @@ static const char HELP_STRING[] =
 	"  -g, --gfx-mode=MODE      Select graphics scaler (1x,2x,3x,2xsai,super2xsai,\n"
 	"                           supereagle,advmame2x,advmame3x,hq2x,hq3x,tv2x,\n"
 	"                           dotmatrix)\n"
+	"  --stretch-mode=MODE      Select stretch mode (center, integral, fit, stretch)"
 	"  --filtering              Force filtered graphics mode\n"
 	"  --no-filtering           Force unfiltered graphics mode\n"
 	"  --gui-theme=THEME        Select GUI theme\n"
@@ -213,6 +214,7 @@ void registerDefaults() {
 	ConfMan.registerDefault("gfx_mode", "normal");
 	ConfMan.registerDefault("render_mode", "default");
 	ConfMan.registerDefault("desired_screen_aspect_ratio", "auto");
+	ConfMan.registerDefault("stretch_mode", "default");
 
 	// Sound & Music
 	ConfMan.registerDefault("music_volume", 192);
@@ -509,6 +511,9 @@ Common::String parseCommandLine(Common::StringMap &settings, int argc, const cha
 			DO_OPTION('g', "gfx-mode")
 			END_OPTION
 
+			DO_LONG_OPTION("stretch-mode")
+			END_OPTION
+
 			DO_OPTION_INT('m', "music-volume")
 			END_OPTION
 

base/main.cpp

@@ -296,6 +296,8 @@ static void setupGraphics(OSystem &system) {
 			system.setFeatureState(OSystem::kFeatureFullscreenMode, ConfMan.getBool("fullscreen"));
 		if (ConfMan.hasKey("filtering"))
 			system.setFeatureState(OSystem::kFeatureFilteringMode, ConfMan.getBool("filtering"));
+		if (ConfMan.hasKey("stretch_mode"))
+			system.setStretchMode(ConfMan.get("stretch_mode").c_str());
 	system.endGFXTransaction();
 
 	// When starting up launcher for the first time, the user might have specified