Add cli options to force fullscreen or windowed

Author: drhelius

README.md

@@ -69,7 +69,13 @@ Don't hesitate to report bugs or ask for new features by [opening an issue](http
 
 ### Command Line Usage
 ```
-gearboy [rom_file] [symbol_file]
+gearboy [options] [rom_file] [symbol_file]
+
+Options:
+  -f, --fullscreen    Start in fullscreen mode
+  -w, --windowed      Start in windowed mode with menu visible
+  -v, --version       Display version information
+  -h, --help          Display this help message
 ```
 
 ## Build Instructions

platforms/desktop-shared/application.cpp

@@ -50,14 +50,25 @@ static void render(void);
 static void frame_throttle(void);
 static void save_window_size(void);
 
-int application_init(const char* rom_file, const char* symbol_file)
+int application_init(const char* rom_file, const char* symbol_file, bool force_fullscreen, bool force_windowed)
 {
     Log("\n%s", GEARBOY_TITLE_ASCII);
     Log("%s %s Desktop App", GEARBOY_TITLE, GEARBOY_VERSION);
 
     config_init();
     config_read();
 
+    if (force_fullscreen)
+    {
+        config_emulator.fullscreen = true;
+        config_emulator.show_menu = false;
+    }
+    else if (force_windowed)
+    {
+        config_emulator.fullscreen = false;
+        config_emulator.show_menu = true;
+    }
+
     int ret = sdl_init();
     emu_init();
 

platforms/desktop-shared/application.h

@@ -36,7 +36,7 @@ EXTERN float application_display_scale;
 EXTERN SDL_version application_sdl_build_version;
 EXTERN SDL_version application_sdl_link_version;
 
-EXTERN int application_init(const char* rom_file, const char* symbol_file);
+EXTERN int application_init(const char* rom_file, const char* symbol_file, bool force_fullscreen, bool force_windowed);
 EXTERN void application_destroy(void);
 EXTERN void application_mainloop(void);
 EXTERN void application_trigger_quit(void);

platforms/desktop-shared/main.cpp

@@ -25,6 +25,8 @@ int main(int argc, char* argv[])
     char* rom_file = NULL;
     char* symbol_file = NULL;
     bool show_usage = false;
+    bool force_fullscreen = false;
+    bool force_windowed = false;
     int ret = 0;
 
     for (int i = 0; i < argc; i++)
@@ -42,6 +44,14 @@ int main(int argc, char* argv[])
             printf("Author: Ignacio Sánchez (drhelius)\n");
             return 0;
         }
+        else if ((strcmp(argv[i], "-f") == 0) || (strcmp(argv[i], "--fullscreen") == 0))
+        {
+            force_fullscreen = true;
+        }
+        else if ((strcmp(argv[i], "-w") == 0) || (strcmp(argv[i], "--windowed") == 0))
+        {
+            force_windowed = true;
+        }
         else if (argv[i][0] == '-')
         {
             show_usage = true;
@@ -68,11 +78,20 @@ int main(int argc, char* argv[])
 
     if (show_usage)
     {
-        printf("Usage: %s [rom_file] [symbol_file]\n", argv[0]);
+        printf("Usage: %s [options] [rom_file] [symbol_file]\n", argv[0]);
+        printf("Options:\n");
+        printf("  -f, --fullscreen    Start in fullscreen mode\n");
+        printf("  -w, --windowed      Start in windowed mode with menu visible\n");
+        printf("  -v, --version       Display version information\n");
+        printf("  -h, --help          Display this help message\n");
         return ret;
     }
 
-    ret = application_init(rom_file, symbol_file);
+    // Don't allow both fullscreen and windowed at the same time
+    if (force_fullscreen && force_windowed)
+        force_fullscreen = false;
+
+    ret = application_init(rom_file, symbol_file, force_fullscreen, force_windowed);
 
     if (ret == 0)
         application_mainloop();