Synopsis

                    GooCanvas;
struct              GooCanvasClass;

GtkWidget *         goo_canvas_new                      (void);

GooCanvasItem *     goo_canvas_get_root_item            (GooCanvas *canvas);
void                goo_canvas_set_root_item            (GooCanvas *canvas,
                                                         GooCanvasItem *item);
GooCanvasItemModel * goo_canvas_get_root_item_model     (GooCanvas *canvas);
void                goo_canvas_set_root_item_model      (GooCanvas *canvas,
                                                         GooCanvasItemModel *model);

GooCanvasItem *     goo_canvas_get_static_root_item     (GooCanvas *canvas);
void                goo_canvas_set_static_root_item     (GooCanvas *canvas,
                                                         GooCanvasItem *item);
GooCanvasItemModel * goo_canvas_get_static_root_item_model
                                                        (GooCanvas *canvas);
void                goo_canvas_set_static_root_item_model
                                                        (GooCanvas *canvas,
                                                         GooCanvasItemModel *model);

void                goo_canvas_get_bounds               (GooCanvas *canvas,
                                                         gdouble *left,
                                                         gdouble *top,
                                                         gdouble *right,
                                                         gdouble *bottom);
void                goo_canvas_set_bounds               (GooCanvas *canvas,
                                                         gdouble left,
                                                         gdouble top,
                                                         gdouble right,
                                                         gdouble bottom);
gdouble             goo_canvas_get_scale                (GooCanvas *canvas);
void                goo_canvas_set_scale                (GooCanvas *canvas,
                                                         gdouble scale);

GooCanvasItem *     goo_canvas_get_item                 (GooCanvas *canvas,
                                                         GooCanvasItemModel *model);
GooCanvasItem *     goo_canvas_get_item_at              (GooCanvas *canvas,
                                                         gdouble x,
                                                         gdouble y,
                                                         gboolean is_pointer_event);
GList *             goo_canvas_get_items_at             (GooCanvas *canvas,
                                                         gdouble x,
                                                         gdouble y,
                                                         gboolean is_pointer_event);
GList *             goo_canvas_get_items_in_area        (GooCanvas *canvas,
                                                         const GooCanvasBounds *area,
                                                         gboolean inside_area,
                                                         gboolean allow_overlaps,
                                                         gboolean include_containers);

void                goo_canvas_scroll_to                (GooCanvas *canvas,
                                                         gdouble left,
                                                         gdouble top);
void                goo_canvas_render                   (GooCanvas *canvas,
                                                         cairo_t *cr,
                                                         const GooCanvasBounds *bounds,
                                                         gdouble scale);

void                goo_canvas_convert_to_pixels        (GooCanvas *canvas,
                                                         gdouble *x,
                                                         gdouble *y);
void                goo_canvas_convert_from_pixels      (GooCanvas *canvas,
                                                         gdouble *x,
                                                         gdouble *y);
void                goo_canvas_convert_to_item_space    (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         gdouble *x,
                                                         gdouble *y);
void                goo_canvas_convert_from_item_space  (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         gdouble *x,
                                                         gdouble *y);
void                goo_canvas_convert_bounds_to_item_space
                                                        (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         GooCanvasBounds *bounds);
void                goo_canvas_convert_units_to_pixels  (GooCanvas *canvas,
                                                         gdouble *x,
                                                         gdouble *y);
void                goo_canvas_convert_units_from_pixels
                                                        (GooCanvas *canvas,
                                                         gdouble *x,
                                                         gdouble *y);

GdkGrabStatus       goo_canvas_pointer_grab             (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         GdkEventMask event_mask,
                                                         GdkCursor *cursor,
                                                         guint32 time);
void                goo_canvas_pointer_ungrab           (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         guint32 time);

void                goo_canvas_grab_focus               (GooCanvas *canvas,
                                                         GooCanvasItem *item);
GdkGrabStatus       goo_canvas_keyboard_grab            (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         gboolean owner_events,
                                                         guint32 time);
void                goo_canvas_keyboard_ungrab          (GooCanvas *canvas,
                                                         GooCanvasItem *item,
                                                         guint32 time);

cairo_t *           goo_canvas_create_cairo_context     (GooCanvas *canvas);
GooCanvasItem *     goo_canvas_create_item              (GooCanvas *canvas,
                                                         GooCanvasItemModel *model);
void                goo_canvas_unregister_item          (GooCanvas *canvas,
                                                         GooCanvasItemModel *model);
void                goo_canvas_register_widget_item     (GooCanvas *canvas,
                                                         GooCanvasWidget *witem);
void                goo_canvas_unregister_widget_item   (GooCanvas *canvas,
                                                         GooCanvasWidget *witem);
void                goo_canvas_update                   (GooCanvas *canvas);
void                goo_canvas_request_update           (GooCanvas *canvas);
void                goo_canvas_request_redraw           (GooCanvas *canvas,
                                                         const GooCanvasBounds *bounds);
void                goo_canvas_request_item_redraw      (GooCanvas *canvas,
                                                         const GooCanvasBounds *bounds,
                                                         gboolean is_static);
gdouble             goo_canvas_get_default_line_width   (GooCanvas *canvas);