Overlap sizer

Introduction¶

Layout children game objects overlapped.

Author: Rex
Game object

Live demos¶

Usage¶

Sample code

Install plugin¶

Load minify file¶

Load plugin (minify file) in preload stage

scene.load.scenePlugin('rexuiplugin', 'https://raw.githubusercontent.com/rexrainbow/phaser3-rex-notes/master/dist/rexuiplugin.min.js', 'rexUI', 'rexUI');

Add sizer object

var sizer = scene.rexUI.add.overlapSizer(config);

Import plugin¶

Install rex plugins from npm
```
npm i phaser3-rex-plugins
```

Install plugin in configuration of game

import UIPlugin from 'phaser3-rex-plugins/templates/ui/ui-plugin.js';
var config = {
    // ...
    plugins: {
        scene: [{
            key: 'rexUI',
            plugin: UIPlugin,
            mapping: 'rexUI'
        },
        // ...
        ]
    }
    // ...
};
var game = new Phaser.Game(config);

Add sizer object

var sizer = scene.rexUI.add.overlapSizer(config);

Import class¶

Install rex plugins from npm
```
npm i phaser3-rex-plugins
```

Import class

import { OverlapSizer } from 'phaser3-rex-plugins/templates/ui/ui-components.js';

Add sizer object

var sizer = new OverlapSizer(scene, config);
scene.add.existing(sizer);

Add sizer object¶

var sizer = scene.rexUI.add.overlapSizer({
    // x: 0,
    // y: 0,
    // anchor: undefined,
    // width: undefined,
    // height: undefined,
    // space: { left: 0, right:0, top:0, bottom:0 },

    // name: '',
    // draggable: false,
    // sizerEvents: false,
    // enableLayer: false,
});

or

var sizer = scene.rexUI.add.overlapSizer(x, y, {
    // width: undefined,
    // height: undefined,
    // anchor: undefined,
    // space: { left: 0, right:0, top:0, bottom:0 },

    // name: '',
    // draggable: false,
    // sizerEvents: false,
    // enableLayer: false,
});

or

var sizer = scene.rexUI.add.overlapSizer(x, y, width, height, {
    // anchor: undefined,
    // space: { left: 0, right:0, top:0, bottom:0 },

    // name: '',
    // draggable: false,
    // sizerEvents: false,
    // enableLayer: false,
});

x, y : Position of this object, it is valid when this object is the top object.
anchor : See anchor.
- left, right, centerX, x, top, bottom, centerY, y : Position based on visible window, which composed of
  - Percentage of visible width/height : 'p%', p: 0 ~ 100.
    - 'left'(=0%), 'center'(=50%), 'right'(=100%)
    - 'top'(=0%), 'center'(=50%), 'bottom'(=100%)
  - Offset : '+n', or '-n'.
- width, height : Set size (invoke onResizeCallback) based on visible window, which composed of
  - Percentage of visible width/height : 'p%', p: 0 ~ 100.
  - Padding : '+n', or '-n'.
- onResizeCallback : A default resize callback will be assigned interanlly.
width, height : Minimum width, minimum height.
space : Pads spaces.
- space.left, space.right, space.top, space.bottom : Space of bounds.
name : Set name of this game object.
draggable : Set true to drag top-most object.
sizerEvents : Set true to fire sizer events. Default value is false.
enableLayer :
- false : Add child game objects into scene's display list. Default behavior.
- true : Add child game objects into an internal layer game object. See also.

Custom class¶

Define class

class MySizer extends RexPlugins.UI.OverlapSizer {
    constructor(scene, x, y, minWidth, minHeight, config) {
        super(scene, x, y, minWidth, minHeight, config);
        // ...
        scene.add.existing(this);
    }
    // ...
}

Create instance

var sizer = new MySizer(scene, x, y, minWidth, minHeight, config);

Add background¶

sizer.addBackground(child);

or

sizer.addBackground(child, {left: 0, right: 0, top: 0, bottom: 0}, key);

left, right, top, bottom : Extra padded space. Default is 0.
key : Add this child into childMap, which could be read back by sizer.getElement(key).
- undefined : Don't add this child. Default value.
- items is a reserved key, which is used to store all children.

Add child¶

Add a game obejct to sizer

sizer.add(child);

or

sizer.add(child,
    {
        key: undefined,
        align: 'center',     
        offsetX: 0,
        offsetY: 0,   
        padding: {left: 0, right: 0, top: 0, bottom: 0},
        expand: true,        // expand: {width, height}
        minWidth: undefined,
        minHeight: undefined,
        aspectRatio: 0,
    }
);

or

sizer.add(child, key, align, padding, expand, minWidth, minHeight, offsetX, offsetY);

child : A game object.
key : Add this child into childMap, which could be read back by sizer.getElement(key).
- undefined : Use current timestamp as key.
- items is a reserved key, which is used to store all children.
align :
- 'center', or Phaser.Display.Align.CENTER : Align game object at center. Default value.
- 'left', or Phaser.Display.Align.LEFT_CENTER : Align game object at left-center.
- 'right', or Phaser.Display.Align.RIGHT_CENTER : Align game object at right-center.
- 'top', or Phaser.Display.Align.RIGHT_CENTER : Align game object at top-center.
- 'bottom', or Phaser.Display.Align.BOTTOM_CENTER : Align game object at bottom-center.
- 'left-top' , or Phaser.Display.Align.TOP_LEFT : Align game object at left-top.
- 'left-center' , or Phaser.Display.Align.LEFT_CENTER : Align game object at left-center.
- 'left-bottom' , or Phaser.Display.Align.BOTTOM_LEFT : Align game object at left-bottom.
- 'center-top' , or Phaser.Display.Align.TOP_CENTER : Align game object at center-top.
- 'center-center' , or Phaser.Display.Align.CENTER : Align game object at center-center.
- 'center-bottom' , or Phaser.Display.Align.BOTTOM_CENTER : Align game object at center-bottom.
- 'right-top' , or Phaser.Display.Align.TOP_RIGHT : Align game object at right-top.
- 'right-center' , or Phaser.Display.Align.RIGHT_CENTER : Align game object at right-center.
- 'right-bottom' , or Phaser.Display.Align.BOTTOM_RIGHT : Align game object at right-bottom.
offsetX, offsetY : Apply offset to x, y coordinate after alignment.
padding : Extra padded space. Default is 0.
- A number for left/right/top/bottom bounds,
- Or a plain object.
```
{
    left: 0,
    right: 0,
    top: 0,
    bottom: 0
}
```
expand :
- Boolean value
  - true : Expand width and height of child. Default value.
  - false : Don't expand width or height of child.
- A plain object
  - {width: true} : Only expand width of child.
  - {height: true} : only expand height of child.
  - {width: true, height: true} : Expand width and height of child.
minWidth : Minimum width of normal (non-sizer) game object, used when expand width mode. Default value is current display width.
minHeight : Minimum height of normal (non-sizer) game object, used when expand height mode. Default value is current display height.
aspectRatio : Keep aspect ratio after layout.
- 0 : Don't keep aspect ratio. Default behavior.
- true : Keep aspect ratio via current size.
- A number : Keep aspect ratio via given value.

Layout children¶

Arrange position of all children.

sizer.layout();

Remove child¶

Remove a child

sizer.remove(child);

or

sizer.remove(key);

Remove and destroy a child

sizer.remove(child, true);

or

sizer.remove(key, true);

Remove all children
```
sizer.removeAll();
```
Remove and destroy all children
```
sizer.removeAll(true);
```
Remove all children and backgrounds
```
sizer.clear();
```
Remove and destroy all children and backgrounds
```
sizer.clear(true);
```
Remove from parent sizer
```
sizer.removeFromParentSizer();
```

Get element¶

Get element

A child

var item = sizer.getElement(key);

or

var item = sizer.getElement('items[' + key + ']');

All children items
```
var items = sizer.getElement('items');
```

Get by name

var gameObject = sizer.getElement('#' + name);
// var gameObject = sizer.getElement('#' + name, recursive);

or

var gameObject = sizer.getByName(name);
// var gameObject = sizer.getByName(name, recursive);

recursive : Set true to search all children recursively.

Get child index¶

var index = sizer.getChildIndex(child);

index : A number, string, or null.

Other properties¶

See base sizer object, container-lite.