Add DPI override options

config.def.h

@@ -651,6 +651,10 @@ static const unsigned default_content_history_size = 100;
 /* Show Menu start-up screen on boot. */
 static const bool menu_show_start_screen = true;
 
+static const bool menu_dpi_override_enable = false;
+
+static const unsigned menu_dpi_override_value = 72;
+
 /* Log level for libretro cores (GET_LOG_INTERFACE). */
 static const unsigned libretro_log_level = 0;
 

configuration.c

@@ -554,6 +554,9 @@ static void config_set_defaults(void)
    settings->menu.entry_hover_color                 = menu_entry_hover_color;
    settings->menu.title_color                       = menu_title_color;
 
+   settings->menu.dpi.override_enable               = menu_dpi_override_enable;
+   settings->menu.dpi.override_value                = menu_dpi_override_value;
+
    settings->menu.navigation.wraparound.horizontal_enable               = true;
    settings->menu.navigation.wraparound.vertical_enable                 = true;
    settings->menu.navigation.browser.filter.supported_extensions_enable = true;
@@ -1183,6 +1186,10 @@ static bool config_load_file(const char *path, bool set_defaults)
 #ifdef HAVE_THREADS
    CONFIG_GET_BOOL_BASE(conf, settings, menu.threaded_data_runloop_enable, "threaded_data_runloop_enable");
 #endif
+
+   CONFIG_GET_BOOL_BASE(conf, settings, menu.dpi.override_enable, "dpi_override_enable");
+   CONFIG_GET_INT_BASE (conf, settings, menu.dpi.override_value,  "dpi_override_value");
+
    CONFIG_GET_BOOL_BASE(conf, settings, menu.pause_libretro, "menu_pause_libretro");
    CONFIG_GET_BOOL_BASE(conf, settings, menu.mouse.enable,   "menu_mouse_enable");
    CONFIG_GET_BOOL_BASE(conf, settings, menu.pointer.enable, "menu_pointer_enable");
@@ -2244,6 +2251,9 @@ bool config_save_file(const char *path)
 #ifdef HAVE_THREADS
    config_set_bool(conf,"threaded_data_runloop_enable", settings->menu.threaded_data_runloop_enable);
 #endif
+
+   config_set_bool(conf, "dpi_override_enable", settings->menu.dpi.override_enable);
+   config_set_int (conf, "dpi_override_value", settings->menu.dpi.override_value);
    config_set_string(conf,"menu_driver", settings->menu.driver);
    config_set_bool(conf,"menu_pause_libretro", settings->menu.pause_libretro);
    config_set_bool(conf,"menu_mouse_enable", settings->menu.mouse.enable);

configuration.h

@@ -139,6 +139,13 @@ typedef struct settings
             } filter;
          } browser;
       } navigation;
+
+      struct
+      {
+         bool     override_enable;
+         unsigned override_value;
+      } dpi;
+
       bool collapse_subgroups_enable;
       bool show_advanced_settings;
 #ifdef HAVE_THREADS

menu/menu_display.c

@@ -84,13 +84,16 @@ bool menu_display_init(menu_handle_t *menu)
 
 float menu_display_get_dpi(menu_handle_t *menu)
 {
-   float dpi, dpi_orig = 128;
+   float dpi;
+   settings_t *settings = config_get_ptr();
 
-   if (!menu)
+   if (!menu || !settings)
-      return dpi_orig;
+      return 128;
 
-   if (!gfx_ctx_get_metrics(DISPLAY_METRIC_DPI, &dpi))
+   if (   settings->menu.dpi.override_enable ||
-      dpi = dpi_orig;
+         !gfx_ctx_get_metrics(DISPLAY_METRIC_DPI, &dpi)
+      )
+      return settings->menu.dpi.override_value;
 
    return dpi;
 }

settings.c

@@ -5480,6 +5480,33 @@ static bool setting_append_list_menu_options(
          general_read_handler);
 
 
+   END_SUB_GROUP(list, list_info);
+
+   START_SUB_GROUP(list, list_info, "Display", group_info.name, subgroup_info);
+
+   CONFIG_BOOL(
+         settings->menu.dpi.override_enable,
+         "dpi_override_enable",
+         "DPI Override Enable",
+         menu_dpi_override_enable,
+         "OFF",
+         "ON",
+         group_info.name,
+         subgroup_info.name,
+         general_write_handler,
+         general_read_handler);
+
+   CONFIG_UINT(
+         settings->menu.dpi.override_value,
+         "dpi_override_value",
+         "DPI Override",
+         menu_dpi_override_value,
+         group_info.name,
+         subgroup_info.name,
+         general_write_handler,
+         general_read_handler);
+   settings_list_current_add_range(list, list_info, 72, 999, 1, true, true);
+
    END_SUB_GROUP(list, list_info);
 
    END_GROUP(list, list_info);