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Menu: handle empty menu

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This commit is contained in:
Aleksandr Kutuzov
2020-10-20 16:20:30 +03:00
parent e2157b2403
commit 224668e156
1 changed files with 10 additions and 8 deletions
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8
applications/menu/menu.c
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@@ -56,9 +56,6 @@ void menu_build_main(Menu* menu) {
menu->root = menu_item_alloc_menu(NULL, NULL); menu->root = menu_item_alloc_menu(NULL, NULL);
menu->settings = menu_item_alloc_menu("Setting", NULL); menu->settings = menu_item_alloc_menu("Setting", NULL);
menu_item_subitem_add(menu->settings, menu_item_alloc_function("one", NULL, NULL, NULL));
menu_item_subitem_add(menu->settings, menu_item_alloc_function("two", NULL, NULL, NULL));
menu_item_subitem_add(menu->settings, menu_item_alloc_function("three", NULL, NULL, NULL));
menu_item_add(menu, menu->settings); menu_item_add(menu, menu->settings);
} }
@@ -88,12 +85,17 @@ void menu_widget_callback(CanvasApi* canvas, void* context) {
canvas->clear(canvas); canvas->clear(canvas);
canvas->set_color(canvas, ColorBlack); canvas->set_color(canvas, ColorBlack);
canvas->set_font(canvas, FontSecondary); canvas->set_font(canvas, FontSecondary);
if (MenuItemArray_size(*items)) {
for(size_t i = 0; i < 5; i++) { for(size_t i = 0; i < 5; i++) {
size_t shift_position = i + menu->position + MenuItemArray_size(*items) - 2; size_t shift_position = i + menu->position + MenuItemArray_size(*items) - 2;
shift_position = shift_position % (MenuItemArray_size(*items)); shift_position = shift_position % (MenuItemArray_size(*items));
MenuItem* item = *MenuItemArray_get(*items, shift_position); MenuItem* item = *MenuItemArray_get(*items, shift_position);
canvas->draw_str(canvas, 2, 12 * (i + 1), menu_item_get_label(item)); canvas->draw_str(canvas, 2, 12 * (i + 1), menu_item_get_label(item));
} }
} else {
canvas->draw_str(canvas, 2, 32, "Empty");
}
} }
release_mutex((ValueMutex*)context, menu); release_mutex((ValueMutex*)context, menu);