Text area

Introduction¶

A container with a text, slider, and scroller.

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 text-area object

var textArea = scene.rexUI.add.textArea(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 text-area object

var textArea = scene.rexUI.add.textArea(config);

Import class¶

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

Import class

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

Add text-area object

var textArea = new TextArea(scene, config);
scene.add.existing(textArea);

Add text-area object¶

var textArea = scene.rexUI.add.textArea({
    // x: 0,
    // y: 0,
    // anchor: undefined,
    // width: undefined,
    // height: undefined,

    // Elements
    background: backgroundGameObject,

    text: textGameObject,
    // textWidth: undefined,
    // textHeight: undefined,
    // textMask: false,
    // alwaysScrollable: false,

    slider: {
        // background: sliderBackgroundGameObject,
        track: trackGameObject,
        /* 
        track: { 
            width: 1, height: 1,
            radius: 0, 
            color: undefined, alpha: 1,
            strokeColor: undefined, strokeAlpha: 1, strokeWidth: 2,
            shape: undefined
        }
        */


        // indicator: indicatorGameObject,
        thumb: thumbGameObject,
        /* 
        thumb: { 
            width: 1, height: 1,
            radius: 0, 
            color: undefined, alpha: 1,
            strokeColor: undefined, strokeAlpha: 1, strokeWidth: 2,
            shape: undefined
        }
        */

        // input: 'drag',
        // position: 'right',

        // hideUnscrollableSlider: false,
        // adaptThumbSize: false,
        // minThumbSize: undefined,

        // buttons: {
        //     top: topButtonGameObject, bottom: bottomButtonGameObject,
        //     left: leftButtonGameObject, right: rightButtonGameObject,
        //     step: 0.01,
        // }
    },

    // scroller: {
    //     threshold: 10,
    //     slidingDeceleration: 5000,
    //     backDeceleration: 2000,
    //     pointerOutRelease: true,
    //     dragRate: 1,
    // },

    mouseWheelScroller: false,
    // mouseWheelScroller: {
    //     focus: true,
    //     speed: 0.1
    // },

    clamplChildOY: false,

    header: headerGameObject,
    footer: footerGameObject,

    space: {
        left: 0,
        right: 0,
        top: 0,
        bottom: 0,

        text: 0,
        // text: {
        //    top: 0,
        //    bottom: 0,
        //    left: 0,
        //    right: 0,
        //},

        slider: 0,
        // slider: {
        //     top: 0,
        //     bottom: 0,
        //     left: 0,
        //     right: 0,
        // },

        header: 0,
        footer: 0,
    },

    expand: {
        header: true,
        footer: true,
    },

    align: {
        header: 'center',
        footer: 'center',
    },

    content: '',

    // 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.
background : Game object of background, optional. This background game object will be resized to fit the size of text area.
text : Text object, bbcode text object, tag text object, or bitmap text object
textWidth : Fixed width of text game object. Set undefined to ignore this feature.
textHeight : Fixed height of text game object. Set undefined to ignore this feature.
textMask :
- false : Crop text game object. Default behavior if text game object has setCrop method.
- true : Apply mask on text to crop text game object. Default behavior if text game object does not have setCrop method (ex. bitmaptext game object).
slider : Componments of slider, optional.
- slider.background : Game object of slider background, optional.
- slider.track : Game object of track.
- slider.thumb : Game object of thumb.
- slider.input :
  - 'pan', 'drag', or 0 : Control slider by panning/dragging thumb game object. Default setting.
  - 'click', or 1 : Control slider by touching track game object.
  - 'none', or -1 : Disable sider controlling.
- slider.position : Position of this slider.
  - 0, 'right', 'bottom' : Slider at right/bottom side. Default value.
  - 1, 'left', 'top' : Slider at left/top side.
- slider.hideUnscrollableSlider :
  - false : Slider is always visible no matter it is scrollable or not. Default behavior.
  - true : Set slider to invisible if it is unscrollable.
- slider.adaptThumbSize :
  - false : Don't adjust height/width of thumb. Default behavior.
  - true : Adjust height/width of thumb according to ratio of visible child.
    - Minimum height/width of thumb = slider.minThumbSize. If content is larger then a page.
    - Maximum height/width of thumb = height/width of slider.track. If content is less then a page.
- slider.minThumbSize : Minimum height/width of thumb used in slider.adaptThumbSize mode.
- slider.buttons : Press button to scroll content in each tick.
  - slider.buttons.top, slider.buttons.bottom : Top and bottom buttons.
  - slider.buttons.left, slider.buttons.right : Left and right buttons
  - slider.buttons.step : Scrolling step in each tick. Default value is 0.01.
- Set to false to skip creating slider.
scroller : Configuration of scroller behavior.
- scroller.threshold : Minimal movement to scroll. Set 0 to scroll immediately.
- scroller.slidingDeceleration : Deceleration of slow down when dragging released.
  - Set false to disable it.
- scroller.backDeceleration : Deceleration of pull back when out of bounds.
  - Set false to disable it.
- scroller.pointerOutRelease : Set to true to release input control when pointer out of gameObject.
- scroller.dragRate : Rate of dragging distance/dragging speed. Default value is 1.
- Set to false to skip creating scroller.
mouseWheelScroller : Configuration of mouse-wheel-scroller behavior.
- mouseWheelScroller.focus :
  - true : Only scrolling when cursor is over textArea. Default behavior.
  - false : Scrolling without checking cursor.
- mouseWheelScroller.speed : Scrolling speed, default value is 0.1.
- Set to false to skip creating mouse-wheel-scroller. Default behavior.
clamplChildOY : Set true to clamp scrolling.
alwaysScrollable :
- false : Can't scroll if content is less then 1 page. Default behavior.
- true : Can scroll in all cases
header : Game object of header, optional.
footer : Game object of footer, optional.
space : Pads spaces
- space.left, space.right, space.top, space.bottom : Space of bounds.
- space.text :
  - A number: Space between text object and slider object.
  - An object: Padding of text object.
    - space.text.top, space.text.bottom : Top, bottom padding space of text object.
    - space.text.right : Space between text object and slider object.
- space.slider :
  - 0 : No space around slider.
  - space.slider.left, space.slider.right, space.slider.top, space.slider.bottom : Space around slider.
- space.header : Space between header and text object.
- space.footer : Space between footer and text object.
expand : Expand width or height of element
- expand.header : Set true to expand width or height of header game object.
- expand.footer : Set true to expand width or height of footer game object.
align : Align element
- align.header
  - '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.
- align.footer
content : Content of this text area.
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 MyTextArea extends RexPlugins.UI.TextArea {
    constructor(scene, config) {
        super(scene, config);
        // ...
        scene.add.existing(this);
    }
    // ...
}

Create instance

var textArea = new MyTextArea(scene, config);

Layout children¶

Arrange position of all elements.

textArea.layout();

Content¶

Set
```
textArea.setText(text);
```
Append
```
textArea.appendText(text);
```
Get
```
var text = textArea.text;
```

Scroll content¶

Scroll down lines
```
textArea.scrollLine(lineCount);
```

Set

textArea.childOY = oy;
// textArea.setChildOY(oy);

Set and clamp
```
textArea.setChildOY(oy, true);
```
Add
```
textArea.addChildOY(oy);
```
Add and clamp
```
textArea.addChildOY(oy, true);
```
Get
```
var childOY = textArea.childOY;
```
Top OY
```
var topOY = textArea.topChildOY;
```
Bottom OY
```
var bottomOY = textArea.bottomChildOY;
```
Is overflow (height of content is larger than display height)
```
var isOverflow = textArea.isOverflow;
```

Scroll by percentage¶

Set

textArea.t = t;  // t: 0~1
// textArea.setT(t);

Set and clamp
```
textArea.setT(t, true);
```
Get
```
var t = textArea.t;
```

Scroll to top/bottom¶

Scroll to top
```
textArea.scrollToTop();
```
- Equal to textArea.t = 0;
Scroll to bottom
```
textArea.scrollToBottom();
```
- Equal to textArea.t = 1;

Scroll to line¶

Scroll to next line
```
textArea.scrollToNextLine();
```
Scroll to next n line
```
textArea.scrollToNextLine(n);
```
Scroll to line
```
textArea.scrollToLine(lineIndex);
```
Get current line index
```
var lineIndex = textArea.lineIndex;
```

Enable/disable scrolling¶

Slider

Set enable state

textArea.setSliderEnable(enabled);

or

textArea.sliderEnable = enabled;

Get enable state
```
var enable = textArea.sliderEnable;
```

Scroller

Set enable state

textArea.setScrollerEnable(enabled);

or

textArea.scrollerEnable = enabled;

Get enable state
```
var enable = textArea.scrollerEnable;
```

Mouse-Wheel-Scroller

Set enable state

textArea.setMouseWheelScrollerEnable(enabled);

or

textArea.mouseWheelScrollerEnable = enabled;

Get enable state

var enable = textArea.mouseWheelScrollerEnable;

Event¶

Scroll

textArea.on('scroll', function(textArea) {
    // ...
})

Scroller drag start

textArea.getElement('scroller').on('dragstart', function(panel) {
    // ...
})

Scroller drag end

textArea.getElement('scroller').on('dragend', function(panel) {
    // ...
})

Lines count¶

var linesCount = textArea.linesCount;

Other properties¶

See sizer object, base sizer object, container-lite.

Get element¶

Get element

Background game object

var background = textArea.getElement('background');

Text game object

var text = textArea.getElement('text');

Slider

Track

var track = textArea.getElement('slider.track');

Thumb

var thumb = textArea.getElement('slider.thumb');

Scroller

var scroller = textArea.getElement('scroller');

Get by name

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

or

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

recursive : Set true to search all children recursively.