Class type DGraphView.view

class type [['vertex, 'edge, 'cluster]] view = object .. end

Graph widget derived from GnoCanvas.canvas. Support zooming and scrolling.

Inherits

GnoCanvas.canvas

method model : ('vertex, 'edge, 'cluster) DGraphModel.abstract_model

Getters

method get_node : 'vertex -> 'vertex DGraphViewItem.view_item

method get_edge : 'edge -> 'edge DGraphViewItem.view_item

method get_cluster : 'cluster -> 'cluster DGraphViewItem.view_item

Iterators

method iter_nodes : ('vertex DGraphViewItem.view_item -> unit) -> unit

method iter_edges : ('vertex DGraphViewItem.view_item -> 'vertex DGraphViewItem.view_item -> unit) ->
       unit

method iter_edges_e : ('edge DGraphViewItem.view_item -> unit) -> unit

method iter_clusters : ('cluster DGraphViewItem.view_item -> unit) -> unit

method iter_succ : ('vertex DGraphViewItem.view_item -> unit) ->
       'vertex DGraphViewItem.view_item -> unit

method iter_pred : ('vertex DGraphViewItem.view_item -> unit) ->
       'vertex DGraphViewItem.view_item -> unit

method iter_succ_e : ('edge DGraphViewItem.view_item -> unit) ->
       'vertex DGraphViewItem.view_item -> unit

method iter_pred_e : ('edge DGraphViewItem.view_item -> unit) ->
       'vertex DGraphViewItem.view_item -> unit

method iter_associated_vertex : ('vertex DGraphViewItem.view_item -> unit) ->
       'vertex DGraphViewItem.view_item -> unit

Membership functions

method mem_edge : 'vertex DGraphViewItem.view_item -> 'vertex DGraphViewItem.view_item -> bool

method find_edge : 'vertex DGraphViewItem.view_item ->
       'vertex DGraphViewItem.view_item -> 'edge DGraphViewItem.view_item

method src : 'edge DGraphViewItem.view_item -> 'vertex DGraphViewItem.view_item

method dst : 'edge DGraphViewItem.view_item -> 'vertex DGraphViewItem.view_item

Zooming

method zoom_factor : float

The current zoom factor.

method zoom_to : float -> unit

Set an absolute zoom factor.

method zoom_in : unit -> unit

Increase zoom_factor by zoom_factor*zoom_padding.

method zoom_out : unit -> unit

Decrease zoom_factor by zoom_factor*zoom_padding.

method adapt_zoom : unit -> unit

Zoom in order to view the whole graph (bird eye view).

method set_zoom_padding : float -> unit

Set the zoom padding used by zoom_in and zoom_out. It defaults to 0.1.

method center_node : 'vertex DGraphViewItem.view_item -> unit

Center canvas on a node.

Highlighting

method connect_highlighting_event : unit -> unit

method highlight : ?color:int32 * int32 -> 'vertex DGraphViewItem.view_item -> unit

Change the color of the given vertex item. May be cancelled by dehighlight. If color is primary,secondary, then primary is used except if the current color is primary. In this case, secondary is used.

method dehighlight : 'vertex DGraphViewItem.view_item -> unit

Cancel highlight.