com.gwtext.client.widgets.layout
Class AnchorLayout

java.lang.Object
  com.gwtext.client.widgets.layout.ContainerLayout
      com.gwtext.client.widgets.layout.AnchorLayout

Direct Known Subclasses:

AbsoluteLayout, FormLayout

public class AnchorLayout
extends ContainerLayout

This is a layout that enables anchoring of contained elements relative to the container's dimensions. If the container is resized, all anchored items are automatically rerendered according to their anchor rules.

AnchorLayout does not have any direct config options (other than inherited ones). However, the container using the AnchorLayout can supply an anchoring-specific config property of anchorSize. By default, AnchorLayout will calculate anchor measurements based on the size of the container itself. However, if anchorSize is specifed, the layout will use it as a virtual container for the purposes of calculating anchor measurements based on it instead, allowing the container to be sized independently of the anchoring logic if necessary.

The items added to an AnchorLayout can also supply an anchoring-specific config property of anchor which is a string containing two values: the horizontal anchor value and the vertical anchor value (for example, '100% 50%'). This value is what tells the layout how the item should be anchored to the container. The following types of anchor values are supported:

• Percentage: Any value between 1 and 100, expressed as a percentage. The first anchor is the percentage width that the item should take up within the container, and the second is the percentage height. Example: '100% 50%' would render an item the complete width of the container and 1/2 its height. If only one anchor value is supplied it is assumed to be the width value and the height will default to auto.
• Offsets: Any positive or negative integer value. The first anchor is the offset from the right edge of the container, and the second is the offset from the bottom edge. Example: '-50 -100' would render an item the complete width of the container minus 50 pixels and the complete height minus 100 pixels. If only one anchor value is supplied it is assumed to be the right offset value and the bottom offset will default to 0.
• Sides: Valid values are 'right' (or 'r') and 'bottom' (or 'b'). Either the container must have a fixed size or an anchorSize config value defined at render time in order for these to have any effect.

Anchor values can also be mixed as needed. For example, '-50 75%' would render the width offset from the container right edge by 50 pixels and 75% of the container's height.

See Also:

AnchorLayoutData

Field Summary

Fields inherited from class com.gwtext.client.widgets.layout.ContainerLayout

configJS

Constructor Summary

AnchorLayout()
Create a new AnchorLayout

AnchorLayout(int width, int height)
Create a new AnchorLayout.

Method Summary

protected com.google.gwt.core.client.JavaScriptObject	create(com.google.gwt.core.client.JavaScriptObject config)
com.google.gwt.core.client.JavaScriptObject	getContainerAttributes()

Methods inherited from class com.gwtext.client.widgets.layout.ContainerLayout

getActiveItem, getJsObj, getSpacing, setExtraCls, setRenderHidden, setSpacing

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AnchorLayout

public AnchorLayout()

Create a new AnchorLayout

AnchorLayout

public AnchorLayout(int width,
                    int height)

Create a new AnchorLayout.

Parameters:

width - the width

height - the height

Method Detail

create

protected com.google.gwt.core.client.JavaScriptObject create(com.google.gwt.core.client.JavaScriptObject config)

Overrides:

create in class ContainerLayout

getContainerAttributes

public com.google.gwt.core.client.JavaScriptObject getContainerAttributes()

Overrides:

getContainerAttributes in class ContainerLayout