Remove some old sdl version code and require 2.0.5

CMakeLists.txt

@@ -392,7 +392,7 @@ if(${PLAYER_TARGET_PLATFORM} STREQUAL "SDL2")
 		src/sdl2_ui.h)
 	target_compile_definitions(${PROJECT_NAME} PUBLIC USE_SDL=2)
 
-	find_package(SDL2 REQUIRED)
+	find_package(SDL2 2.0.5 REQUIRED)
 	target_link_libraries(${PROJECT_NAME} SDL2::SDL2main)
 elseif(${PLAYER_TARGET_PLATFORM} STREQUAL "libretro")
 	target_sources(${PROJECT_NAME} PRIVATE

configure.ac

@@ -44,7 +44,7 @@ AS_IF([test "x$with_freetype" != "xno"], [
 		PKG_CHECK_MODULES([HARFBUZZ],[harfbuzz],[AC_DEFINE(HAVE_HARFBUZZ,[1],[Enable HarfBuzz text shaping])],[auto_harfbuzz=0])
 	])
 ])
-PKG_CHECK_MODULES([SDL],[sdl2],[AC_DEFINE(USE_SDL,[2],[Enable SDL2])],[
+PKG_CHECK_MODULES([SDL],[sdl2 >= 2.0.5],[AC_DEFINE(USE_SDL,[2],[Enable SDL2])],[
 	PKG_CHECK_MODULES([SDL],[sdl],[AC_DEFINE(USE_SDL,[1],[Enable SDL])])
 ])
 AC_ARG_WITH([audio],[AS_HELP_STRING([--without-audio], [Disable audio support. @<:@default=on@:>@])])

src/sdl2_ui.cpp

@@ -453,12 +453,8 @@ void Sdl2Ui::ToggleZoom() {
 		// get maximum usable window size
 		int display_index = SDL_GetWindowDisplayIndex(sdl_window);
 		SDL_Rect max_mode;
-#if SDL_VERSION_ATLEAST(2, 0, 5)
 		// this takes account of the menu bar and dock on macOS and task bar on windows
 		SDL_GetDisplayUsableBounds(display_index, &max_mode);
-#else
-		SDL_GetDisplayBounds(display_index, &max_mode);
-#endif
 		// reset zoom, if it does not fit
 		if ((max_mode.h < SCREEN_TARGET_HEIGHT * current_display_mode.zoom) ||
 			(max_mode.w < SCREEN_TARGET_WIDTH * current_display_mode.zoom)) {
@@ -656,12 +652,9 @@ void Sdl2Ui::ProcessMouseWheelEvent(SDL_Event& evnt) {
 
 	int amount = evnt.wheel.y;
 
-	// FIXME: Debian ships older SDL2
-#if SDL_VERSION_ATLEAST(2, 0, 4)
 	// translate direction
 	if (evnt.wheel.direction == SDL_MOUSEWHEEL_FLIPPED)
 		amount *= -1;
-#endif
 
 	keys[Input::Keys::MOUSE_SCROLLUP] = amount > 0;
 	keys[Input::Keys::MOUSE_SCROLLDOWN] = amount < 0;