#include "window.h"
#include "image.h"
#include "input.h"
#include <gtk-3.0/gtk/gtk.h>

GtkWidget *window;
GtkWidget *scrolled_window;

static gboolean key_press(GtkWindow *window, GdkEvent *event, gpointer data)
{
    handle_key_press(event->key);
    return FALSE;
}

static gboolean button_press(GtkWindow *window, GdkEvent *event, gpointer data)
{
    handle_button_press(event);
    return TRUE;
}

static gboolean button_release(GtkWindow *window, GdkEvent *event,
                               gpointer data)
{
    handle_button_release();
    return TRUE;
}

static gboolean motion_notify(GtkWindow *window, GdkEvent *event, gpointer data)
{
    handle_mouse_move(event->motion.x, event->motion.y);
    return TRUE;
}

static gboolean scroll_callback(GtkWindow *window, GdkEvent *event,
                                gpointer data)
{
    handle_scroll(event);
    return TRUE;
}

static gboolean configure_callback(GtkWindow *window, GdkEvent *event,
                                   gpointer data)
{
    handle_resize();
    return TRUE;
}

void create_main_window(GApplication *app)
{
    window = gtk_application_window_new(GTK_APPLICATION(app));
    gtk_window_set_title(GTK_WINDOW(window), "qwe");
    gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
    g_signal_connect(G_OBJECT(window), "configure-event",
                     G_CALLBACK(configure_callback), NULL);
    g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press),
                     NULL);
    g_signal_connect(G_OBJECT(window), "button-press-event",
                     G_CALLBACK(button_press), NULL);
    g_signal_connect(G_OBJECT(window), "button-release-event",
                     G_CALLBACK(button_release), NULL);
    g_signal_connect(G_OBJECT(window), "motion-notify-event",
                     G_CALLBACK(motion_notify), NULL);
    gtk_widget_add_events(GTK_WIDGET(window), GDK_SCROLL_MASK);
    g_signal_connect(G_OBJECT(window), "scroll-event",
                     G_CALLBACK(scroll_callback), NULL);

    scrolled_window = gtk_scrolled_window_new(NULL, NULL);
    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
                                   GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_container_add(GTK_CONTAINER(scrolled_window), GTK_WIDGET(new_image()));
    gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(scrolled_window));
    gtk_widget_show_all(GTK_WIDGET(window));
}

void scroll_window(gdouble x, gdouble y)
{
    GtkAdjustment *h_adj = gtk_scrolled_window_get_hadjustment(
        GTK_SCROLLED_WINDOW(scrolled_window));
    GtkAdjustment *v_adj = gtk_scrolled_window_get_vadjustment(
        GTK_SCROLLED_WINDOW(scrolled_window));
    gtk_adjustment_set_value(h_adj, gtk_adjustment_get_value(h_adj) + x);
    gtk_adjustment_set_value(v_adj, gtk_adjustment_get_value(v_adj) + y);
    gtk_scrolled_window_set_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window),
                                        h_adj);
    gtk_scrolled_window_set_vadjustment(GTK_SCROLLED_WINDOW(scrolled_window),
                                        v_adj);
}

void get_curr_win_size(gint *width, gint *height)
{
    gtk_window_get_size(GTK_WINDOW(window), width, height);
}

void quit()
{
    g_application_quit(
        G_APPLICATION(gtk_window_get_application(GTK_WINDOW(window))));
}