/** * @file view_stack.h * GUI: ViewStack API * * ViewStack accumulates several Views in one stack. * Draw callbacks are called sequentially starting from * first added. Input callbacks are called in reverse order. * Consumed input is not passed on underlying layers. */ #pragma once #include <stdbool.h> #include "view.h" #ifdef __cplusplus extern "C" { #endif /** ViewStack, anonymous type. */ typedef struct ViewStack ViewStack; /** Allocate and init ViewStack * * @return ViewStack instance */ ViewStack* view_stack_alloc(void); /** Free ViewStack instance * * @param view_stack instance */ void view_stack_free(ViewStack* view_stack); /** Get View of ViewStack. * Should this View to any view manager such as * ViewDispatcher or ViewHolder. * * @param view_stack instance */ View* view_stack_get_view(ViewStack* view_stack); /** Add View to ViewStack. * Adds View on top of ViewStack. * * @param view_stack instance * @view view view to add */ void view_stack_add_view(ViewStack* view_stack, View* view); /** Remove any View in ViewStack. * If no View to remove found - ignore. * * @param view_stack instance * @view view view to remove */ void view_stack_remove_view(ViewStack* view_stack, View* view); #ifdef __cplusplus } #endif