Native Menu Bars for Windows and MacOS

examples/CMakeLists.txt

@@ -126,6 +126,7 @@ macro(add_sdl_example_executable TARGET)
     endif()
 endmacro()
 
+add_sdl_example_executable(video-menubar SOURCES video/01-menubar/menubar.c)
 add_sdl_example_executable(renderer-clear SOURCES renderer/01-clear/clear.c)
 add_sdl_example_executable(renderer-primitives SOURCES renderer/02-primitives/primitives.c)
 add_sdl_example_executable(renderer-lines SOURCES renderer/03-lines/lines.c)

examples/video/01-menubar/menubar.c

@@ -0,0 +1,299 @@
+/*
+ * This example code $WHAT_IT_DOES.
+ *
+ * This code is public domain. Feel free to use it for any purpose!
+ */
+
+#define SDL_MAIN_USE_CALLBACKS 1  /* use the callbacks instead of main() */
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+
+SDL_Window* window_1 = NULL;
+SDL_Renderer *renderer_1 = NULL;
+
+SDL_Window *window_2 = NULL;
+SDL_Renderer *renderer_2 = NULL;
+
+SDL_MenuItem *checkable[2] = {
+    NULL,
+    NULL
+};
+
+SDL_MenuItem *null_out_button[2] = {
+    NULL,
+    NULL
+};
+
+SDL_MenuItem *menu_bar_1;
+SDL_MenuItem *menu_bar_2;
+
+typedef enum SDL_EventType_MenuExt
+{
+    MENU_BAR_FILE,
+    MENU_BAR_FILE_SWAP_BARS,
+    MENU_BAR_FILE_NULL_OUT_BAR,
+    MENU_BAR_FILE_DISABLE_NULL_OUT_BAR,
+    MENU_BAR_BOOKMARKS,
+    MENU_BAR_BOOKMARKS_TOOLBAR,
+    MENU_BAR_BOOKMARKS_TOOLBAR_GITHUB,
+    MENU_BAR_BOOKMARKS_TOOLBAR_WIKI,
+    MENU_BAR_BOOKMARKS_TOOLBAR_DISCORD,
+    MENU_BAR_BOOKMARKS_OTHER_BOOKMARKS,
+    MENU_BAR_BOOKMARKS_OTHER_BOOKMARKS_STACKOVERFLOW,
+    MENU_BAR_INCOGNITO,
+    MENU_BAR_TOP_LEVEL_BUTTON,
+    MENU_BAR_EXIT,
+
+    MENU_BAR_LAST
+} SDL_EventType_MenuExt;
+
+static SDL_EventType_MenuExt EVENT_START = (SDL_EventType_MenuExt)0;
+
+void PrintMenuItems(SDL_Renderer* renderer, SDL_MenuItem *menu_item, int indent, int *total_index)
+{
+    SDL_MenuItem *app_menu = NULL;
+    Sint64 item_count = 0;
+    Sint64 i = 0;
+
+    if (!menu_item) {
+        return;
+    }
+
+    const char* label = SDL_GetMenuItemLabel(menu_item);
+
+    if (!label) {
+        label = "no label given";
+    }
+
+    SDL_RenderDebugText(renderer, (float)(8 * indent * 2), (float)(*total_index * 8), label);
+    ++(*total_index);
+
+
+    if (SDL_GetMenuItemType(menu_item) == SDL_MENUITEM_MENUBAR) {
+        app_menu = SDL_GetMenuBarAppMenu(menu_item);
+
+        if (app_menu) {
+            SDL_RenderDebugText(renderer, (float)(8 * (indent + 1) * 2), (float)(*total_index * 8), " -> AppMenu");
+            ++(*total_index);
+
+            item_count = SDL_GetMenuChildItems(app_menu);
+
+            for (i = 0; i < item_count; ++i) {
+                PrintMenuItems(renderer, SDL_GetMenuChildItem(app_menu, (size_t)i), indent + 2, total_index);
+            }
+        }
+    }
+
+    item_count = SDL_GetMenuChildItems(menu_item);
+
+    for (i = 0; i < item_count; ++i) {
+        PrintMenuItems(renderer, SDL_GetMenuChildItem(menu_item, (size_t)i), indent + 1, total_index);
+    }
+}
+
+
+void CreateMenuBar_1()
+{
+    menu_bar_1 = SDL_CreateMenuBar();
+
+    {
+        SDL_MenuItem *menu = SDL_CreateMenuItem(menu_bar_1, "File_1", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_CreateMenuItem(menu, "Swap Bars", SDL_MENUITEM_BUTTON, MENU_BAR_FILE_SWAP_BARS);
+        null_out_button[0] = SDL_CreateMenuItem(menu, "Null Out Bar", SDL_MENUITEM_BUTTON, MENU_BAR_FILE_NULL_OUT_BAR);
+        SDL_SetMenuItemEnabled(null_out_button[0], false);
+        checkable[0] = SDL_CreateMenuItem(menu, "Enable Null Out Bar", SDL_MENUITEM_CHECKABLE, MENU_BAR_FILE_DISABLE_NULL_OUT_BAR);
+        SDL_SetMenuItemChecked(checkable[0], false);
+    }
+
+    {
+        SDL_MenuItem *menu = SDL_CreateMenuItem(menu_bar_1, "Bookmarks_1", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *main_bookmarks = SDL_CreateMenuItem(menu, "Bookmarks Toolbar_1", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *discord = SDL_CreateMenuItem(main_bookmarks, "SDL Discord_1", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_DISCORD);
+        SDL_CreateMenuItem(main_bookmarks, "SDL GitHub_1", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_GITHUB);
+        SDL_CreateMenuItemAt(main_bookmarks, 0, "SDL Wiki_1", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_WIKI);
+
+        SDL_MenuItem *other_bookmarks = SDL_CreateMenuItem(main_bookmarks, "Other Bookmarks_1", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *stack_overflow = SDL_CreateMenuItem(other_bookmarks, "Stack Overflow-test", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_OTHER_BOOKMARKS_STACKOVERFLOW);
+        SDL_SetMenuItemLabel(stack_overflow, "Stack Overflow_1");
+
+        SDL_DestroyMenuItem(discord);
+
+        SDL_SetMenuItemChecked(other_bookmarks, false);
+    }
+
+    {
+        // We can't create a top level checkable .
+        SDL_assert(!SDL_CreateMenuItem(menu_bar_1, "Incognito", SDL_MENUITEM_CHECKABLE, MENU_BAR_INCOGNITO));
+
+        SDL_MenuItem* app_menu = SDL_GetMenuBarAppMenu(menu_bar_1);
+        if (app_menu) {
+            SDL_assert(!SDL_CreateMenuItem(menu_bar_1, "Exit 1", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT));
+            SDL_CreateMenuItem(app_menu, "Exit 1", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT);
+        } else {
+            SDL_CreateMenuItem(menu_bar_1, "Exit 1", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT);
+        }
+    }
+
+    SDL_SetWindowMenuBar(window_1, menu_bar_1);
+
+    EVENT_START = (SDL_EventType_MenuExt)SDL_RegisterEvents(MENU_BAR_LAST);
+}
+
+void CreateMenuBar_2()
+{
+    menu_bar_2 = SDL_CreateMenuBar();
+
+    {
+        SDL_MenuItem *menu = SDL_CreateMenuItem(menu_bar_2, "File_2", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_CreateMenuItem(menu, "Swap Bars", SDL_MENUITEM_BUTTON, MENU_BAR_FILE_SWAP_BARS);
+        null_out_button[1] = SDL_CreateMenuItem(menu, "Null Out Bar", SDL_MENUITEM_BUTTON, MENU_BAR_FILE_NULL_OUT_BAR);
+        SDL_SetMenuItemEnabled(null_out_button[1], false);
+        checkable[1] = SDL_CreateMenuItem(menu, "Enable Null Out Bar", SDL_MENUITEM_CHECKABLE, MENU_BAR_FILE_DISABLE_NULL_OUT_BAR);
+        SDL_SetMenuItemChecked(checkable[1], false);
+    }
+
+    {
+        SDL_MenuItem *menu = SDL_CreateMenuItem(menu_bar_2, "Bookmarks_2", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *main_bookmarks = SDL_CreateMenuItem(menu, "Bookmarks Toolbar_2", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *discord = SDL_CreateMenuItem(main_bookmarks, "SDL Discord_2", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_DISCORD);
+        SDL_CreateMenuItem(main_bookmarks, "SDL GitHub_2", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_GITHUB);
+        SDL_CreateMenuItemAt(main_bookmarks, 0, "SDL Wiki_2", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_TOOLBAR_WIKI);
+
+        SDL_MenuItem *other_bookmarks = SDL_CreateMenuItem(main_bookmarks, "Other Bookmarks_2", SDL_MENUITEM_SUBMENU, MENU_BAR_LAST);
+        SDL_MenuItem *stack_overflow = SDL_CreateMenuItem(other_bookmarks, "Stack Overflow-test_2", SDL_MENUITEM_BUTTON, MENU_BAR_BOOKMARKS_OTHER_BOOKMARKS_STACKOVERFLOW);
+        SDL_SetMenuItemLabel(stack_overflow, "Stack Overflow_2");
+
+        SDL_DestroyMenuItem(discord);
+
+        SDL_SetMenuItemChecked(other_bookmarks, false);
+    }
+
+    {
+        // We can't create a top level checkable .
+        SDL_assert(!SDL_CreateMenuItem(menu_bar_2, "Incognito_2", SDL_MENUITEM_CHECKABLE, MENU_BAR_INCOGNITO));
+
+        SDL_MenuItem* app_menu = SDL_GetMenuBarAppMenu(menu_bar_2);
+        if (app_menu) {
+            SDL_assert(!SDL_CreateMenuItem(menu_bar_2, "Exit 2", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT));
+            SDL_CreateMenuItem(app_menu, "Exit 2", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT);
+        } else {
+            SDL_CreateMenuItem(menu_bar_2, "Exit 2", SDL_MENUITEM_BUTTON, MENU_BAR_EXIT);
+        }
+    }
+
+    SDL_SetWindowMenuBar(window_2, menu_bar_2);
+
+    EVENT_START = (SDL_EventType_MenuExt)SDL_RegisterEvents(MENU_BAR_LAST);
+}
+
+SDL_AppResult SDL_AppInit(void** appstate, int argc, char** argv) {
+    SDL_CreateWindowAndRenderer("Window 1", 640, 480, 0, &window_1, &renderer_1);
+    SDL_CreateWindowAndRenderer("Window 2", 640, 480, 0, &window_2, &renderer_2);
+
+    CreateMenuBar_1();
+    CreateMenuBar_2();
+
+    //return SDL_APP_SUCCESS;
+    return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppIterate(void* appstate) {
+
+    // Window 1
+    SDL_SetRenderDrawColor(renderer_1, 180, 180, 180, 255);
+    SDL_RenderClear(renderer_1);
+
+    SDL_SetRenderDrawColor(renderer_1, 0, 0, 0, 255);
+    int total_index = 0;
+    PrintMenuItems(renderer_1, SDL_GetWindowMenuBar(window_1), 0, &total_index);
+    SDL_RenderPresent(renderer_1);
+
+    // Window 2
+    SDL_SetRenderDrawColor(renderer_2, 255, 255, 255, 255);
+    SDL_RenderClear(renderer_2);
+
+    SDL_SetRenderDrawColor(renderer_2, 0, 0, 0, 255);
+    total_index = 0;
+    PrintMenuItems(renderer_2, SDL_GetWindowMenuBar(window_2), 0, &total_index);
+    SDL_RenderPresent(renderer_2);
+
+    return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppEvent(void* appstate, SDL_Event* event) {
+
+    switch (event->common.type)
+    {
+        case SDL_EVENT_QUIT:
+        {
+            return SDL_APP_SUCCESS;
+        }
+        case SDL_EVENT_MENU_BUTTON_CLICKED:
+        case SDL_EVENT_MENU_CHECKABLE_CLICKED:
+        {
+            switch (event->menu.user_event_type) {
+                case MENU_BAR_BOOKMARKS_TOOLBAR_GITHUB:
+                {
+                    SDL_OpenURL("https://github.com/libsdl-org/SDL");
+                    break;
+                }
+                case MENU_BAR_BOOKMARKS_TOOLBAR_WIKI:
+                {
+                    SDL_OpenURL("https://wiki.libsdl.org/SDL3/FrontPage");
+                    break;
+                }
+                case MENU_BAR_BOOKMARKS_TOOLBAR_DISCORD:
+                {
+                    SDL_OpenURL("https://discord.gg/BwpFGBWsv8");
+                    break;
+                }
+                case MENU_BAR_BOOKMARKS_OTHER_BOOKMARKS_STACKOVERFLOW:
+                {
+                    SDL_OpenURL("https://stackoverflow.com/questions");
+                    break;
+                }
+                case MENU_BAR_FILE_DISABLE_NULL_OUT_BAR:
+                {
+                    bool is_checked = false;
+                    SDL_GetMenuItemChecked(checkable[0], &is_checked);
+                    SDL_SetMenuItemChecked(checkable[0], !is_checked);
+                    SDL_SetMenuItemChecked(checkable[1], !is_checked);
+
+                    bool is_enabled = false;
+                    SDL_GetMenuItemEnabled(null_out_button[0], &is_enabled);
+                    SDL_SetMenuItemEnabled(null_out_button[0], !is_enabled);
+                    SDL_SetMenuItemEnabled(null_out_button[1], !is_enabled);
+
+                    break;
+                }
+                case MENU_BAR_FILE_SWAP_BARS:
+                {
+                    SDL_MenuItem *menu_bar1 = SDL_GetWindowMenuBar(window_1);
+                    SDL_MenuItem *menu_bar2 = SDL_GetWindowMenuBar(window_2);
+                    SDL_SetWindowMenuBar(window_1, menu_bar2);
+                    SDL_SetWindowMenuBar(window_2, menu_bar1);
+                    break;
+                }
+                case MENU_BAR_FILE_NULL_OUT_BAR:
+                {
+                    SDL_Window *window = SDL_GetWindowFromID(event->menu.windowID);
+                    SDL_SetWindowMenuBar(window, NULL);
+                    break;
+                }
+                case MENU_BAR_EXIT:
+                {
+                    return SDL_APP_SUCCESS;
+                }
+            }
+            SDL_Log("%d\n", event->menu.user_event_type);
+        }
+    }
+
+    return SDL_APP_CONTINUE;
+}
+
+void SDL_AppQuit(void* appstate, SDL_AppResult result) {
+
+}
+
+

include/SDL3/SDL_events.h

@@ -264,6 +264,10 @@ typedef enum SDL_EventType
     SDL_EVENT_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
     SDL_EVENT_RENDER_DEVICE_LOST, /**< The device has been lost and can't be recovered. */
 
+    /* Menu events */
+    SDL_EVENT_MENU_BUTTON_CLICKED = 0x2100,
+    SDL_EVENT_MENU_CHECKABLE_CLICKED,
+
     /* Reserved events for private platforms */
     SDL_EVENT_PRIVATE0 = 0x4000,
     SDL_EVENT_PRIVATE1,
@@ -1004,6 +1008,14 @@ typedef struct SDL_UserEvent
     void *data2;        /**< User defined data pointer */
 } SDL_UserEvent;
 
+typedef struct SDL_MenuEvent
+{
+    Uint32 type; /**< SDL_EVENT_MENU_BUTTON_CLICKED or SDL_EVENT_MENU_CHECKABLE_CLICKED */
+    Uint32 reserved;
+    Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */
+    SDL_WindowID windowID; /**< The associated window if any */
+    Uint16 user_event_type;
+} SDL_MenuEvent;
 
 /**
  * The structure for all events in SDL.
@@ -1054,6 +1066,7 @@ typedef union SDL_Event
     SDL_RenderEvent render;                 /**< Render event data */
     SDL_DropEvent drop;                     /**< Drag and drop event data */
     SDL_ClipboardEvent clipboard;           /**< Clipboard event data */
+    SDL_MenuEvent menu;                     /**< Menu event data */
 
     /* This is necessary for ABI compatibility between Visual C++ and GCC.
        Visual C++ will respect the push pack pragma and use 52 bytes (size of