Replace highdpi window flag with t.highdpi in love.conf

src/modules/window/Window.cpp

@@ -26,6 +26,18 @@ namespace love
 namespace window
 {
 
+static bool highDPIAllowed = false;
+
+void setHighDPIAllowed(bool enable)
+{
+	highDPIAllowed = enable;
+}
+
+bool isHighDPIAllowed()
+{
+	return highDPIAllowed;
+}
+
 Window::~Window()
 {
 }

src/modules/window/Window.h

@@ -43,6 +43,10 @@ class Graphics;
 namespace window
 {
 
+// Applied when the window is first created.
+void setHighDPIAllowed(bool enable);
+bool isHighDPIAllowed();
+
 // Forward-declared so it can be used in the class methods. We can't define the
 // whole thing here because it uses the Window::Type enum.
 struct WindowSettings;
@@ -66,7 +70,7 @@ public:
 		SETTING_BORDERLESS,
 		SETTING_CENTERED,
 		SETTING_DISPLAY,
-		SETTING_HIGHDPI,
+		SETTING_HIGHDPI, // Deprecated
 		SETTING_USE_DPISCALE,
 		SETTING_REFRESHRATE,
 		SETTING_X,
@@ -261,7 +265,6 @@ struct WindowSettings
 	bool borderless = false;
 	bool centered = true;
 	int display = 0;
-	bool highdpi = false;
 	bool usedpiscale = true;
 	double refreshrate = 0.0;
 	bool useposition = false;

src/modules/window/sdl/Window.cpp

@@ -477,7 +477,7 @@ bool Window::setWindow(int width, int height, WindowSettings *settings)
 	if (f.borderless)
 		sdlflags |= SDL_WINDOW_BORDERLESS;
 
-	if (f.highdpi)
+	if (isHighDPIAllowed())
 		sdlflags |= SDL_WINDOW_ALLOW_HIGHDPI;
 
 	int x = f.x;
@@ -596,7 +596,8 @@ void Window::updateSettings(const WindowSettings &newsettings, bool updateGraphi
 
 	getPosition(settings.x, settings.y, settings.display);
 
-	settings.highdpi = (wflags & SDL_WINDOW_ALLOW_HIGHDPI) != 0;
+	setHighDPIAllowed((wflags & SDL_WINDOW_ALLOW_HIGHDPI) != 0);
+
 	settings.usedpiscale = newsettings.usedpiscale;
 
 	// Only minimize on focus loss if the window is in exclusive-fullscreen mode

src/modules/window/wrap_Window.cpp

@@ -75,9 +75,19 @@ static int readWindowSettings(lua_State *L, int idx, WindowSettings &settings)
 	settings.borderless = luax_boolflag(L, idx, settingName(Window::SETTING_BORDERLESS), settings.borderless);
 	settings.centered = luax_boolflag(L, idx, settingName(Window::SETTING_CENTERED), settings.centered);
 	settings.display = luax_intflag(L, idx, settingName(Window::SETTING_DISPLAY), settings.display+1) - 1;
-	settings.highdpi = luax_boolflag(L, idx, settingName(Window::SETTING_HIGHDPI), settings.highdpi);
 	settings.usedpiscale = luax_boolflag(L, idx, settingName(Window::SETTING_USE_DPISCALE), settings.usedpiscale);
 
+	lua_getfield(L, idx, settingName(Window::SETTING_HIGHDPI));
+	if (!lua_isnoneornil(L, -1))
+	{
+		luax_markdeprecated(L, "window.highdpi", API_FIELD, DEPRECATED_REPLACED, "t.highdpi in love.conf");
+		bool highdpi = luax_checkboolean(L, -1);
+		if (!instance()->isOpen())
+			setHighDPIAllowed(highdpi);
+
+	}
+	lua_pop(L, 1);
+
 	lua_getfield(L, idx, settingName(Window::SETTING_VSYNC));
 	if (lua_isnumber(L, -1))
 		settings.vsync = (int) lua_tointeger(L, -1);
@@ -201,9 +211,6 @@ int w_getMode(lua_State *L)
 	lua_pushinteger(L, settings.display + 1);
 	lua_setfield(L, -2, settingName(Window::SETTING_DISPLAY));
 
-	luax_pushboolean(L, settings.highdpi);
-	lua_setfield(L, -2, settingName(Window::SETTING_HIGHDPI));
-
 	luax_pushboolean(L, settings.usedpiscale);
 	lua_setfield(L, -2, settingName(Window::SETTING_USE_DPISCALE));
 
@@ -219,6 +226,12 @@ int w_getMode(lua_State *L)
 	return 3;
 }
 
+int w_isHighDPIAllowed(lua_State *L)
+{
+	luax_pushboolean(L, isHighDPIAllowed());
+	return 1;
+}
+
 int w_getDisplayOrientation(lua_State *L)
 {
 	int displayindex = 0;
@@ -618,6 +631,7 @@ static const luaL_Reg functions[] =
 	{ "setMode", w_setMode },
 	{ "updateMode", w_updateMode },
 	{ "getMode", w_getMode },
+	{ "isHighDPIAllowed", w_isHighDPIAllowed },
 	{ "getDisplayOrientation", w_getDisplayOrientation },
 	{ "getFullscreenModes", w_getFullscreenModes },
 	{ "setFullscreen", w_setFullscreen },