+
+ game->blanktile = rsvg_handle_new_from_file ("tiles/blanktile.svg", &error);
+ if (error)
+ FATAL_ERROR (error->message);
+
+ game->current_tile = game->deck.num_tiles - 1;
+}
+
+static gboolean on_expose_event (GtkWidget *widget, GdkEventExpose *event, game_t *game)
+{
+ cairo_t *cr;
+
+ cr = gdk_cairo_create (widget->window);
+
+ deck_draw(game, cr);
+
+ cairo_destroy (cr);
+
+ return TRUE;
+}
+
+static gboolean on_key_press_event (GtkWidget *widget, GdkEventKey *event, game_t *game)
+{
+ printf ("You pressed key %d\n", event->keyval);
+
+ return TRUE;
+}
+
+static gboolean on_button_press_event (GtkWidget *widget, GdkEventButton *event, game_t *game)
+{
+ int i, tile_x, tile_y;
+
+ for (i = 0; i < game->deck.num_tiles; i++)
+ {
+ tile_x = game->deck.tiles[i].x;
+ tile_y = game->deck.tiles[i].y;
+ if (event->x >= tile_x && event->x <= (tile_x + TILE_WIDTH) &&
+ event->y >= tile_y && event->y <= (tile_y + TILE_HEIGHT) )
+
+ game->current_tile = i;
+ }
+
+ return TRUE;
+}
+
+static gboolean on_button_release_event (GtkWidget *widget, GdkEventButton *event, game_t *game)
+{
+ printf ("You released button %d\n", event->button);
+
+ return TRUE;
+}
+
+static gboolean on_button_motion_event (GtkWidget *widget, GdkEventMotion *event,
+ game_t *game, cairo_t *cr)
+{
+ tile_t *tile;
+
+ tile = &game->deck.tiles[game->current_tile];
+
+ /* First, invalidate the region where the tile currently is. */
+ gtk_widget_queue_draw_area (widget, tile->x - 1, tile->y - 1, TILE_WIDTH + 1, TILE_HEIGHT + 2);
+
+ /* Then, move the tile */
+ tile->x = event->x;
+ tile->y = event->y;
+
+ /* Finally, invalidate the region where the tile is now. */
+ gtk_widget_queue_draw_area (widget, tile->x - 1, tile->y - 1, TILE_WIDTH + 1, TILE_HEIGHT + 2);
+
+ return TRUE;