Canvas.
A canvas widget is composed of a root canvas group. A group can contain full_items (a groups is a fullitem too).
Coordinates of an item are relative to its parent group.
All item classes takes optional x and y arguments to define their coordinates relatively to their group, with default value 0. The group can be given with the optional group argument, or set with the set_group method. These three arguments are also handled by convenient functions to create items.
class virtual item : ?group:group option -> ?x:int option -> ?y:int option -> unit -> object ... endThis virtual class defines the item interface. Most of the virtual methods correspond to methods of Widget.widget and are defined by inherting from Widget.widget or other widgets.
class full_item : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA full_item is a Widget.widget with item interface.
class +'b container_item : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... enda container_item is a Container.container with item interface.
class group : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA group is a [full_item] container_item. Its default class_ is "canvas_group".
class rect : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> w:int -> h:int -> unit -> object ... endAn item to draw a rectangle. Default class_ is "canvas_rect". Width and height of the rectangle can be specified with optional arguments w and h.
class label : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA Text.label as item. Default class_ is "canvas_label".
class glyph : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA Text.glyph as item. Default class_ is "canvas_glyph".
class 'a box : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA Pack.box as item..
class paned : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA Pack.paned as item. Default class_ is "canvas_paned".
class fixed_size : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> ?w:int option -> ?h:int option ->
unit -> object ... endA Bin.fixed_size as item.
class 'a flex : ?class_:string option -> ?name:string option -> ?props:Props.t option -> ?group:
group
option -> ?x:int option -> ?y:int option -> unit -> object ... endA Flex.flex as item. Default class_ is "canvas_flex".
These convenient functions are used to create items. They all take x and y optional arguments to specify the coordinates of the created item, and group to specify the group the item belongs to. Other arguments are generic widget arguments or arguments specific to the kind of item.
val group :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
unit ->
groupCreates a group.
val rect :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
w:int ->
h:int ->
unit ->
rectCreates a rect.
val label :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
string ->
labelCreates a label.
val glyph :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
int ->
glyphCreates a glyph.
val vbox :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
unit ->
'a boxCreates a box with vertical orientation. Default class_ is "canvas_hbox".
val hbox :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
unit ->
'a boxCreates a box with horizontal orientation. Default class_ is "canvas_hbox".
val vpaned :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
unit ->
panedCreates a paned with vertical orientation. Default class_ is "canvas_vpaned".
val hpaned :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
unit ->
panedCreates a paned with horizontal orientation. Default class_ is "canvas_hpaned".
val fixed_size :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
?w:int ->
?h:int ->
unit ->
fixed_sizeCreates a fixed_size.
val flex :
?class_:string ->
?name:string ->
?props:Props.t ->
?group:group ->
?x:int ->
?y:int ->
?orientation:Props.orientation ->
?justification:Flex.justification ->
?items_alignment:Flex.item_alignment ->
?content_alignment:Flex.content_alignment ->
?inter_space:int ->
?wrap:bool ->
?wrap_on_break:bool ->
?collapse_spaces:bool ->
unit ->
'a flexCreates a flex.
val canvas :
?class_:string ->
?name:string ->
?props:Props.t ->
?pack:(Widget.widget -> unit) ->
unit ->
canvasConvenient function to create a canvas. See widget_arguments for arguments.