module Canvas: sig .. end
val new_canvas : unit -> GnomeCanvas.canvas Gobject.obj
val new_canvas_aa : unit -> GnomeCanvas.canvas Gobject.obj
val root : [> GnomeCanvas.canvas ] Gobject.obj -> GnomeCanvas.group Gobject.obj
val set_scroll_region : [> GnomeCanvas.canvas ] Gobject.obj ->
x1:float -> y1:float -> x2:float -> y2:float -> unit
val get_scroll_region : [> GnomeCanvas.canvas ] Gobject.obj -> float array
val set_center_scroll_region : [> GnomeCanvas.canvas ] Gobject.obj -> bool -> unit
val get_center_scroll_region : [> GnomeCanvas.canvas ] Gobject.obj -> bool
val set_pixels_per_unit : [> GnomeCanvas.canvas ] Gobject.obj -> float -> unit
val scroll_to : [> GnomeCanvas.canvas ] Gobject.obj -> x:int -> y:int -> unit
val get_scroll_offsets : [> GnomeCanvas.canvas ] Gobject.obj -> int * int
val update_now : [> GnomeCanvas.canvas ] Gobject.obj -> unit
val get_item_at : [> GnomeCanvas.canvas ] Gobject.obj ->
x:float -> y:float -> GnomeCanvas.item Gobject.obj
val w2c_affine : [> GnomeCanvas.canvas ] Gobject.obj -> float array
val w2c : [> GnomeCanvas.canvas ] Gobject.obj -> wx:float -> wy:float -> int * int
val w2c_d : [> GnomeCanvas.canvas ] Gobject.obj -> wx:float -> wy:float -> float * float
val c2w : [> GnomeCanvas.canvas ] Gobject.obj -> cx:float -> cy:float -> float * float
val window_to_world : [> GnomeCanvas.canvas ] Gobject.obj ->
winx:float -> winy:float -> float * float
val world_to_window : [> GnomeCanvas.canvas ] Gobject.obj ->
wox:float -> woy:float -> float * float