[sdl2] minimal UI ported to sdl2, only LCD area displayed for now

.gitignore

@@ -1,4 +1,4 @@
 src/*.o
-src/tools/*.o
+src/legacy_tools/*.o
 
 dist/x48ng*

Makefile

@@ -105,6 +105,17 @@ ifeq ($(WITH_X11), yes)
 	DOTOS += src/ui_x11.o
 endif
 
+### SDL2 UI
+ifeq ($(WITH_SDL2), yes)
+	WITH_SDL = no
+	SDLCFLAGS = $(shell "$(PKG_CONFIG)" --cflags sdl2)
+	SDLLIBS = $(shell "$(PKG_CONFIG)" --libs sdl2)
+
+	override CFLAGS += $(SDLCFLAGS) -DHAS_SDL2=1
+	LIBS += $(SDLLIBS)
+	DOTOS += src/ui_sdl2.o
+endif
+
 ### SDL UI
 ifeq ($(WITH_SDL), yes)
 	SDLCFLAGS = $(shell "$(PKG_CONFIG)" --cflags SDL_gfx sdl12_compat)

src/config.c

@@ -278,6 +278,7 @@ int config_init( int argc, char* argv[] )
 
         {"debug",            no_argument,       &clopt_useDebugger,             true         },
 
+        {"sdl2",             no_argument,       &clopt_frontend_type,           FRONTEND_SDL2},
         {"sdl",              no_argument,       &clopt_frontend_type,           FRONTEND_SDL },
         {"no-chrome",        no_argument,       &clopt_hide_chrome,             true         },
         {"fullscreen",       no_argument,       &clopt_show_ui_fullscreen,      true         },
@@ -327,6 +328,7 @@ int config_init( int argc, char* argv[] )
                             "%s)\n"
                             "  -V --verbose            be verbose (default: false)\n"
                             "     --x11                use X11 front-end (default: true)\n"
+                            "     --sdl2               use SDL2 front-end (default: false)\n"
                             "     --sdl                use SDL front-end (default: false)\n"
                             "     --tui                use text front-end (default: false)\n"
                             "     --tui-small          use text small front-end (2×2 pixels per character) (default: "
@@ -522,6 +524,8 @@ int config_init( int argc, char* argv[] )
     lua_getglobal( config_lua_values, "frontend" );
 #ifdef HAS_X11
 #  define DEFAULT_FRONTEND "x11"
+#elif HAS_SDL2
+#  define DEFAULT_FRONTEND "sdl2"
 #elif HAS_SDL
 #  define DEFAULT_FRONTEND "sdl"
 #else
@@ -531,6 +535,8 @@ int config_init( int argc, char* argv[] )
     if ( svalue != NULL ) {
         if ( strcmp( svalue, "x11" ) == 0 )
             config.frontend_type = FRONTEND_X11;
+        if ( strcmp( svalue, "sdl2" ) == 0 )
+            config.frontend_type = FRONTEND_SDL2;
         if ( strcmp( svalue, "sdl" ) == 0 )
             config.frontend_type = FRONTEND_SDL;
         if ( strcmp( svalue, "tui" ) == 0 ) {
@@ -691,6 +697,9 @@ int config_init( int argc, char* argv[] )
             case FRONTEND_X11:
                 fprintf( stdout, "x11" );
                 break;
+            case FRONTEND_SDL2:
+                fprintf( stdout, "sdl2" );
+                break;
             case FRONTEND_SDL:
                 fprintf( stdout, "sdl" );
                 break;

src/config.h

@@ -3,6 +3,7 @@
 
 #include <stdbool.h>
 
+#define FRONTEND_SDL2 3
 #define FRONTEND_SDL 0
 #define FRONTEND_X11 1
 #define FRONTEND_TEXT 2

src/ui.c

@@ -2104,6 +2104,15 @@ void start_UI( int argc, char** argv )
             break;
 #endif
 
+#if defined( HAS_SDL2 )
+        case FRONTEND_SDL2:
+#  if !defined( HAS_X11 )
+        default:
+#  endif
+            init_sdl2_ui( argc, argv );
+            break;
+#endif
+
 #if defined( HAS_SDL )
         case FRONTEND_SDL:
 #  if !defined( HAS_X11 )
@@ -2114,7 +2123,7 @@ void start_UI( int argc, char** argv )
 #endif
 
         case FRONTEND_TEXT:
-#if ( !defined( HAS_X11 ) && !defined( HAS_SDL ) )
+#if ( !defined( HAS_X11 ) && !defined( HAS_SDL2 ) && !defined( HAS_SDL ) )
         default:
 #endif
             init_text_ui( argc, argv );
@@ -2132,6 +2141,15 @@ void ui_stop( void )
             break;
 #endif
 
+#if defined( HAS_SDL2 )
+        case FRONTEND_SDL2:
+#  if !defined( HAS_X11 )
+        default:
+#  endif
+            sdl2_ui_stop();
+            break;
+#endif
+
 #if defined( HAS_SDL )
         case FRONTEND_SDL:
 #  if !defined( HAS_X11 )
@@ -2142,7 +2160,7 @@ void ui_stop( void )
 #endif
 
         case FRONTEND_TEXT:
-#if ( !defined( HAS_X11 ) && !defined( HAS_SDL ) )
+#if ( !defined( HAS_X11 ) && !defined( HAS_SDL2 ) && !defined( HAS_SDL ) )
         default:
 #endif
             text_ui_stop();

src/ui.h

@@ -21,6 +21,11 @@ extern void init_x11_ui( int argc, char** argv );
 extern void x11_ui_stop( void );
 #endif
 
+#ifdef HAS_SDL2
+extern void init_sdl2_ui( int argc, char** argv );
+extern void sdl2_ui_stop( void );
+#endif
+
 #ifdef HAS_SDL
 extern void init_sdl_ui( int argc, char** argv );
 extern void sdl_ui_stop( void );