GridLayout class
This simple layout places all of the Parts in a grid-like arrangement, ordered, spaced apart, and wrapping as needed. It ignores any Links connecting the Nodes being laid out. There are many samples that use GridLayout. Every Palette uses a GridLayout by default.
If you want to experiment interactively with most of the properties, try the Grid Layout sample. See samples that make use of GridLayout in the samples index.
By default this layout will sort all of the Parts alphabetically
(comparing Part#text values, respecting case)
and position them left-to-right, separated by #spacing.width,
until they do not fit in the current row.
At that time it starts a new row, separated from the previous row by #spacing.height.
There is a uniform cell size equal to the maximum Part width (plus spacing width)
and the maximum part height (plus spacing height).
At least one part is placed in each row, even if the part by itself is wider than the wrapping width.
You can specify values for the #cellSize width and height.
If a part is wider than the cell size, it spans more than one cell in the row.
You can also specify a value for the #wrappingWidth,
which will be used instead of the diagram's viewport width, to control when each row is considered "full".
The value of Layout#isViewportSized will be true when
the value of #wrappingWidth is NaN.
This causes the layout to be performed again automatically as the viewport changes size.
You can also set #wrappingColumn to limit the number of items in each row. Both the #wrappingWidth and the #wrappingColumn are respected when deciding when to wrap to the next row.
This layout is sufficiently simple that it does not use a LayoutNetwork.
- Implemented types
- Available extensions
- Annotations
-
- @JS()
- @staticInterop
Constructors
- GridLayout([dynamic init])
-
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- ascending ↔ EnumValue
-
Lay out each child according to the sort order given by GridLayout#comparer
This value is used for GridLayout#sorting.
getter/setter pair
- descending ↔ EnumValue
-
Lay out each child in reverse sort order given by GridLayout#comparer
This value is used for GridLayout#sorting.
getter/setter pair
- forward ↔ EnumValue
-
Lay out each child in the order in which they were found;
This value is used for GridLayout#sorting.
getter/setter pair
- leftToRight ↔ EnumValue
-
Fill each row from left to right;
This value is used for GridLayout#arrangement.
getter/setter pair
- location ↔ EnumValue
-
Position the part's Part#location at a grid point;
This value is used for GridLayout#alignment.
getter/setter pair
- position ↔ EnumValue
-
Position the top-left corner of each part at a grid point;
This value is used for GridLayout#alignment.
getter/setter pair
- reverse ↔ EnumValue
-
Lay out each child in reverse order from which they were found;
This value is used for GridLayout#sorting.
getter/setter pair
- rightToLeft ↔ EnumValue
-
Fill each row from right to left;
This value is used for GridLayout#arrangement.
getter/setter pair