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Sizer

Introduction

Layout children game objects.

It is inspired from wxSizer.

• Author: Rex
• Game object

Live demos

• Nested sizer
• Proportion
• DOM child

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.sizer(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.sizer(config);
  

Import class

• Install rex plugins from npm

  npm i phaser3-rex-plugins
  

• Import class

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

• Add sizer object

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

Add sizer object

var sizer = scene.rexUI.add.sizer({
    orientation: 0,

    // x: 0,
    // y: 0,
    // anchor: undefined,
    // width: undefined,
    // height: undefined,
    // space: { left: 0, right:0, top:0, bottom:0, item:0 },

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

or

var sizer = scene.rexUI.add.sizer(x, y, {
    orientation: 0,

    // width: undefined,
    // height: undefined,
    // anchor: undefined,
    // space: { left: 0, right:0, top:0, bottom:0, item:0 },

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

or

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

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

or

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

• 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 : Minimum width, minimum height.
• orientation : Main orientation of the sizer.
  • 'left-to-right', 'horizontal','h', 'x', or 0 : Arrange game objects from left ot right.
  • 'top-to-bottom', 'vertical','v', 'y', or 1 : Arrange game objects from top to bottom.
• space : Pads spaces.
  • space.left, space.right, space.top, space.bottom : Space of bounds.
  • space.item : Space between 2 children game objects.
• 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.

Custom class

• Define class

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

• Create instance

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

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.

Add child

Add a game obejct to sizer

sizer.add(child);

or

sizer.add(child,
    {
        proportion: 0,
        align: 'center',
        padding: {left: 0, right: 0, top: 0, bottom: 0},
        expand: false,
        key: undefined,
        index: undefined,
        minWidth: undefined,
        minHeight: undefined
    }
);

or

sizer.add(child, proportion, align, padding, expand, key, index);
// sizer.add(child, proportion, align, padding, expand, key, index);

• child : A game object.
• proportion :
  • 0, or 'min' : Place next game object closely. Default value.
  • > 0 : Stretch game object via proportion value.
  • null : Don't arrange this child.
• 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.
• 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 : Set true to
  • Expand height when orientation is 0 (left-to-right), or
  • Expand width when orientation is 1 (top-to-bottom)
• key : Add this child into childMap, which could be read back by sizer.getElement(key).
  • undefined : Don't add this child. Default value.
• index : Insert child to.
  • undefined : Insert child at last.
• minWidth : Minimum width of normal (non-sizer) game object, used when orientation is x, and proportion is not 0. Default value is current display width.
• minHeight : Minimum height of normal (non-sizer) game object, used when orientation is y, and proportion is not 0. Default value is current display height.

Add space

Add a stretchable space.

sizer.addSpace();
// sizer.addSpace(proportion);

Layout children

Arrange position of all children.

sizer.layout();

See also - dirty

Remove child

• Remove a child

  sizer.remove(child);
  

• Remove and destroy a child

  sizer.remove(child, 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);
  

Get element

• Get element
  • 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.

Events

Note

Enable sizer events by set sizerEvents to true in config.

• Fire 'sizer.postlayout' event to all children after layout.

  child.on('sizer.postlayout', function(prevState, child, parentSizer){
  
  })
  

  • prevState : Properties before layout.
    • prevState.x, prevState.y : Child position before layout.
    • prevState.width, prevState.height, prevState.displayWidth, prevState.displayHeight, prevState.scaleX, prevState.scaleY : Child size before layout.
• Fire 'sizer.remove' event to removed without destroyed child.

  child.on('sizer.remove', function(child, parentSizer){
  
  })
  

Other properties

See base sizer object.