gp_app_event.h

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//SPDX-License-Identifier: LGPL-2.0-or-later
 
/*
 
   Copyright (c) 2014-2024 Cyril Hrubis <metan@ucw.cz>
 
 */
 
#ifndef GP_APP_EVENT_H
#define GP_APP_EVENT_H
 
#include <widgets/gp_widget_event.h>
 
void gp_app_on_event_set(int (*on_event)(gp_widget_event *ev));
 
#define GP_APP_EVENT_DEFAULT_MASK (1<<GP_WIDGET_EVENT_FREE)
 
void gp_app_event_mask(enum gp_widget_event_type ev_type);
 
void gp_app_event_unmask(enum gp_widget_event_type ev_type);
 
struct gp_app {
        uint32_t ev_mask;
        int (*on_event)(gp_widget_event *ev);
};
 
extern const struct gp_app *gp_app;
 
static inline int gp_app_send_event(enum gp_widget_event_type ev_type, ...)
{
        va_list va;
        long val;
 
        if (!gp_app->on_event)
                return 0;
 
        if (!(gp_app->ev_mask & (1<<ev_type)))
                return 0;
 
        va_start(va, ev_type);
        val = va_arg(va, long);
        va_end(va);
 
        gp_widget_event ev = {
                .type = ev_type,
                .val = val,
        };
 
        return gp_app->on_event(&ev);
}
 
#endif /* GP_APP_EVENT_H */