Absolute Layout

Ext JS 4 Layouts Guide

David Feinberg

Copyright © 2011 Sencha, Inc. All rights reserved.

Pre-Release Content

All the content in this guide is based on a early pre-release version of Ext JS 4. The concepts and code

examples presented in this guide may not be applicable to the final release.

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Table of Contents

Ext JS Layout Guide ........................................................................................................ 1

............................................................................................................................... 1

Overview ................................................................................................................. 1

Box Model Layout vs Sencha Layouts ...................................................................... 1

What's a Sencha Layout? ........................................................................................ 1

Overview of Container Layouts ................................................................................. 2

Absolute .......................................................................................................... 2

Anchor ............................................................................................................ 2

Auto ................................................................................................................ 3

Border ............................................................................................................. 3

Card ................................................................................................................ 3

Column ........................................................................................................... 4

Fit ................................................................................................................... 4

HBox ............................................................................................................... 4

VBox ............................................................................................................... 5

Table ............................................................................................................... 5

Examples of Container Layouts ................................................................................ 6

AbsoluteLayout in Action .................................................................................. 6

AnchorLayout in Action .................................................................................... 8

AutoLayout in Action ...................................................................................... 10

FitLayout in Action ......................................................................................... 11

CardLayout in Action ...................................................................................... 12

HBoxLayout in Action ..................................................................................... 14

VBoxLayout in Action ..................................................................................... 16

ColumnLayout in Action ................................................................................. 18

TableLayout in Action ..................................................................................... 20

BorderLayout in Action ................................................................................... 22

Layout Tips ............................................................................................................ 25

Default Layout ............................................................................................... 25

When to Call doLayout ................................................................................... 25

Scrolling and Dynamic Container Sizing .................................................................. 26

Scrolling AutoLayout - Containers and Panels ................................................. 26

Scrolling VBox and HBoxLayouts .................................................................... 31

Scrolling ColumnLayout .................................................................................. 39

The Unscrollables - Fit, Card and BorderLayouts ............................................. 42

Scrolling Applications - Viewport ..................................................................... 42

ColumnLayout in a Viewport - With Vertical Scrolling ........................................ 45

Scrolling Applications - BorderLayout .............................................................. 47

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List of Figures

1. Two Inner Panels Absolutely Positioned in a Containing Panel ....................................... 6

2. Three Inner Panels Anchored to a Containing Panel ...................................................... 8

3. Two Inner Panels Inside a Containing Panel Using AutoLayout ..................................... 10

4. Inner Panel Inside a Containing Panel Using FitLayout ................................................. 11

5.

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