#ifndef GTK_IMPORTS_H
#define GTK_IMPORTS_H

/*************************************************************************************
 * boiler plate code to initialize Gtk functions etc.
 *************************************************************************************/

void loadGtkFunctions(void (*loader)(const char *, void **, void *), void *user_data);

/*************************************************************************************
 * Gtk Functions to load from shared library
 *************************************************************************************/

#ifdef GTK_DECLARE_FUNCS
    #define EXTERN
    #ifndef NULL
    #define NULL 0
    #endif
    #define DECL(ret, f, arg1) EXTERN ret (*f) arg1 = NULL;
#else
    #ifdef GTK_LOAD_FUNCS
        #define DECL(ret, f, arg1) loader(#f, (void **) &f, user_data);
    #else
        #define EXTERN extern
        #define DECL(ret, f, arg1) EXTERN ret (*f) arg1;
    #endif
#endif

#ifndef GTK_IMPORTS_TYPES
#define GTK_IMPORTS_TYPES

typedef void GtkWidget;
typedef void GtkWindow;
typedef void GtkApplication;
typedef void GApplication;
typedef void GObject;
typedef void *GCallback;
typedef void *gpointer;
typedef int gboolean;
typedef int gint;
typedef char gchar;
typedef void GClosure;
typedef void (*GClosureNotify) (gpointer data, GClosure *closure);

typedef enum {
    GTK_WINDOW_TOPLEVEL = 0
} GtkWindowType;

typedef enum {
    G_APPLICATION_FLAGS_NONE = 0,
    G_APPLICATION_DEFAULT_FLAGS = 0,
    G_APPLICATION_IS_SERVICE = 1,
    G_APPLICATION_IS_LAUNCHER = 2,
    G_APPLICATION_HANDLES_OPEN = 4,
    G_APPLICATION_HANDLES_COMMAND_LINE = 8,
    G_APPLICATION_SEND_ENVIRONMENT = 16,
    G_APPLICATION_NON_UNIQUE = 32,
    G_APPLICATION_CAN_OVERRIDE_APP_ID = 64,
    G_APPLICATION_ALLOW_REPLACEMENT = 128,
    G_APPLICATION_REPLACE = 256
}  GApplicationFlags;

typedef enum {
    G_CONNECT_DEFAULT = 0,
    G_CONNECT_AFTER = 1,
    G_CONNECT_SWAPPED = 2
} GConnectFlags;

#endif

DECL(GtkApplication *, gtk_application_new, (const char *name, GApplicationFlags flags))
DECL(int, g_application_run, (GApplication* application, int argc, char** argv))

DECL(GtkWidget*, gtk_application_window_new, ( GtkApplication* application ))
DECL(GtkWidget *, gtk_window_new, (GtkWindowType))
DECL(void, gtk_window_close, (GtkWindow *))
DECL(void, gtk_widget_show_all, (GtkWindow *window))
DECL(void, gtk_window_get_size, (GtkWindow *win, int *width, int *height))
DECL(void, gtk_window_resize, (GtkWindow* window, gint width, gint height))
DECL(void, gtk_window_set_default_size, (GtkWindow *window, gint width, gint height))
DECL(void, gtk_window_get_position, (GtkWindow* window, gint* root_x, gint* root_y))
DECL(void, gtk_window_move, (GtkWindow* window, gint x, gint y))

DECL(gboolean, gtk_window_get_decorated, (GtkWindow* window))

DECL(void, gtk_window_set_title, (GtkWindow* window, const gchar* title))
DECL(const gchar*, gtk_window_get_title, (GtkWindow* window))

DECL(void, gtk_main, (void))
DECL(void, gtk_main_quit, (void))

DECL(unsigned long, g_signal_connect_data, (GObject *obj, const char *signal, GCallback c_handler, gpointer data, GClosureNotify destroy_data, GConnectFlags connect_flags))
DECL(void, g_object_unref, (GObject* object))

#define g_signal_connect(instance, signal, c_handler, data) \
    g_signal_connect_data(instance, signal, reinterpret_cast<void *>(c_handler), data, NULL, G_CONNECT_DEFAULT)

#endif // GTK_IMPORTS_H