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<h1 class="page-title">Source: visual/TextBox.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* Editable TextBox Stimulus.
*
* @author Alain Pitiot
* @version 2021.2.0
* @copyright (c) 2017-2020 Ilixa Ltd. (http://ilixa.com) (c) 2020-2021 Open Science Tools Ltd. (https://opensciencetools.org)
* @license Distributed under the terms of the MIT License
*/
import * as PIXI from 'pixi.js-legacy';
import {VisualStim} from './VisualStim';
import {Color} from '../util/Color';
import {ColorMixin} from '../util/ColorMixin';
import {TextInput} from './TextInput';
import {ButtonStim} from './ButtonStim.js';
import * as util from '../util/Util';
// TODO finish documenting all options
/**
* @name module:visual.TextBox
* @class
* @extends VisualStim
* @mixes ColorMixin
* @param {Object} options
* @param {String} options.name - the name used when logging messages from this stimulus
* @param {module:core.Window} options.win - the associated Window
* @param {string} [options.text=""] - the text to be rendered
* @param {string} [options.font= "Arial"] - the font family
* @param {Array.&lt;number>} [options.pos= [0, 0]] - the position of the center of the text
*
* @param {Color} [options.color= Color('white')] the background color
* @param {number} [options.opacity= 1.0] - the opacity
* @param {number} [options.depth= 0] - the depth (i.e. the z order)
* @param {number} [options.contrast= 1.0] - the contrast
* @param {string} [options.units= "norm"] - the units of the text size and position
* @param {number} [options.ori= 0.0] - the orientation (in degrees)
* @param {number} [options.height= 0.1] - the height of the text
* @param {boolean} [options.bold= false] - whether or not the text is bold
* @param {boolean} [options.italic= false] - whether or not the text is italic
* @param {string} [options.anchor = 'left'] - horizontal alignment
*
* @param {boolean} [options.multiline= false] - whether or not a textarea is used
* @param {boolean} [options.autofocus= true] - whether or not the first input should receive focus by default
* @param {boolean} [options.flipHoriz= false] - whether or not to flip the text horizontally
* @param {boolean} [options.flipVert= false] - whether or not to flip the text vertically
* @param {PIXI.Graphics} [options.clipMask= null] - the clip mask
* @param {boolean} [options.autoDraw= false] - whether or not the stimulus should be automatically drawn on every frame flip
* @param {boolean} [options.autoLog= false] - whether or not to log
*/
export class TextBox extends util.mix(VisualStim).with(ColorMixin)
{
constructor({name, win, pos, anchor, size, units, ori, opacity, depth, text, font, letterHeight, bold, italic, alignment, color, contrast, flipHoriz, flipVert, fillColor, borderColor, borderWidth, padding, editable, multiline, autofocus, clipMask, autoDraw, autoLog} = {})
{
super({name, win, pos, size, units, ori, opacity, depth, clipMask, autoDraw, autoLog});
this._addAttribute(
'text',
text,
'',
this._onChange(true, true)
);
this._addAttribute(
'placeholder',
text,
'',
this._onChange(true, true)
);
this._addAttribute(
'anchor',
anchor,
'center',
this._onChange(false, true)
);
this._addAttribute(
'flipHoriz',
flipHoriz,
false,
this._onChange(false, false)
);
this._addAttribute(
'flipVert',
flipVert,
false,
this._onChange(false, false)
);
// font:
this._addAttribute(
'font',
font,
'Arial',
this._onChange(true, true)
);
this._addAttribute(
'letterHeight',
letterHeight,
this._getDefaultLetterHeight(),
this._onChange(true, true)
);
this._addAttribute(
'bold',
bold,
false,
this._onChange(true, true)
);
this._addAttribute(
'italic',
italic,
false,
this._onChange(true, true)
);
this._addAttribute(
'alignment',
alignment,
'left',
this._onChange(true, true)
);
// colors:
this._addAttribute(
'color',
color,
'white',
this._onChange(true, false)
);
this._addAttribute(
'fillColor',
fillColor,
'lightgrey',
this._onChange(true, false)
);
this._addAttribute(
'borderColor',
borderColor,
this.fillColor,
this._onChange(true, false)
);
this._addAttribute(
'contrast',
contrast,
1.0,
this._onChange(true, false)
);
// default border width: 1px
this._addAttribute(
'borderWidth',
borderWidth,
util.to_unit([1, 0], 'pix', win, this._units)[0],
this._onChange(true, true)
);
// default padding: half of the letter height
this._addAttribute(
'padding',
padding,
this._letterHeight / 2.0,
this._onChange(true, true)
);
this._addAttribute('multiline', multiline, false, this._onChange(true, true));
this._addAttribute('editable', editable, false, this._onChange(true, true));
this._addAttribute('autofocus', autofocus, true, this._onChange(true, false));
// this._setAttribute({
// name: 'vertices',
// value: vertices,
// assert: v => (v != null) &amp;&amp; (typeof v !== 'undefined') &amp;&amp; Array.isArray(v) )
// log);
// estimate the bounding box:
this._estimateBoundingBox();
if (this._autoLog)
{
this._psychoJS.experimentLogger.exp(`Created ${this.name} = ${this.toString()}`);
}
}
/**
* Clears the current text value or sets it back to match the placeholder.
*
* @name module:visual.TextBox#reset
* @public
*/
reset()
{
const text = this.editable ? '' : this.placeholder;
this.setText(this.placeholder);
}
/**
* Clears the current text value.
*
* @name module:visual.TextBox#clear
* @public
*/
clear()
{
this.setText();
}
/**
* For tweaking the underlying input value.
*
* @name module:visual.TextBox#setText
* @public
* @param {string} text
*/
setText(text = '')
{
if (typeof this._pixi !== 'undefined')
{
this._pixi.text = text;
}
this._text = text;
}
/**
* For accessing the underlying input value.
*
* @name module:visual.TextBox#getText
* @public
* @return {string} - the current text value of the underlying input element.
*/
getText()
{
if (typeof this._pixi !== 'undefined')
{
return this._pixi.text;
}
return this._text;
}
/**
* Setter for the size attribute.
*
* @name module:visual.TextBox#setSize
* @public
* @param {boolean} size - whether or not to wrap the text at the given width
* @param {boolean} [log= false] - whether of not to log
*/
setSize(size, log)
{
// test with the size is undefined, or [undefined, undefined]:
let isSizeUndefined = (
(typeof size === 'undefined') || (size === null) ||
( Array.isArray(size) &amp;&amp; size.every( v => typeof v === 'undefined' || v === null) )
);
if (isSizeUndefined)
{
size = TextBox._defaultSizeMap.get(this._units);
if (typeof size === 'undefined')
{
throw {
origin: 'TextBox.setSize',
context: 'when setting the size of TextBox: ' + this._name,
error: 'no default size for unit: ' + this._units
};
}
}
const hasChanged = this._setAttribute('size', size, log);
if (hasChanged)
{
this._needUpdate = true;
this._needPixiUpdate = true;
// immediately estimate the bounding box:
this._estimateBoundingBox();
}
}
/**
* Get the default letter height given the stimulus' units.
*
* @name module:visual.TextBox#_getDefaultLetterHeight
* @return {number} - the letter height corresponding to this stimulus' units.
* @protected
*/
_getDefaultLetterHeight()
{
const height = TextBox._defaultLetterHeightMap.get(this._units);
if (typeof height === 'undefined')
{
throw {
origin: 'TextBox._getDefaultLetterHeight',
context: 'when getting the default height of TextBox: ' + this._name,
error: 'no default letter height for unit: ' + this._units
};
}
return height;
}
/**
* Get the TextInput options applied to the PIXI.TextInput.
*
* @name module:visual.TextBox#_getTextInputOptions
* @private
*/
_getTextInputOptions()
{
const letterHeight_px = Math.round(this._getLengthPix(this._letterHeight));
const padding_px = Math.round(this._getLengthPix(this._padding));
const width_px = Math.round(this._getLengthPix(this._size[0]));
const borderWidth_px = Math.round(this._getLengthPix(this._borderWidth));
const height_px = Math.round(this._getLengthPix(this._size[1]));
const multiline = this._multiline;
return {
input: {
fontFamily: this._font,
fontSize: letterHeight_px + 'px',
color: new Color(this._color).hex,
fontWeight: (this._bold) ? 'bold' : 'normal',
fontStyle: (this._italic) ? 'italic' : 'normal',
padding: padding_px + 'px',
multiline,
text: this._text,
height: multiline ? (height_px - 2 * padding_px) + 'px' : undefined,
width: (width_px - 2 * padding_px) + 'px'
},
box: {
fill: new Color(this._fillColor).int,
rounded: 5,
stroke: {
color: new Color(this._borderColor).int,
width: borderWidth_px
}
/*default: {
fill: new Color(this._fillColor).int,
rounded: 5,
stroke: {
color: new Color(this._borderColor).int,
width: borderWidth_px
}
},
focused: {
fill: new Color(this._fillColor).int,
rounded: 5,
stroke: {
color: new Color(this._borderColor).int,
width: borderWidth_px
}
},
disabled: {
fill: new Color(this._fillColor).int,
rounded: 5,
stroke: {
color: new Color(this._borderColor).int,
width: borderWidth_px
}
}*/
}
};
}
/**
* Estimate the bounding box.
*
* @name module:visual.TextBox#_estimateBoundingBox
* @function
* @override
* @protected
*/
_estimateBoundingBox()
{
// estimate the vertical size:
const boxHeight = this._letterHeight + 2 * this._padding + 2 * this._borderWidth;
// take the alignment into account:
const anchor = this._getAnchor();
this._boundingBox = new PIXI.Rectangle(
this._pos[0] - anchor[0] * this._size[0],
this._pos[1] - anchor[1] * boxHeight,
this._size[0],
boxHeight
);
// TODO take the orientation into account
}
/**
* Update the stimulus, if necessary.
*
* @name module:visual.TextBox#_updateIfNeeded
* @private
*
* @todo take size into account
*/
_updateIfNeeded()
{
if (!this._needUpdate)
{
return;
}
this._needUpdate = false;
// update the PIXI representation, if need be:
if (this._needPixiUpdate)
{
this._needPixiUpdate = false;
if (typeof this._pixi !== 'undefined')
{
this._pixi.destroy(true);
}
// Get the currently entered text
let enteredText = this._pixi !== undefined? this._pixi.text: '';
// Create new TextInput
this._pixi = new TextInput(this._getTextInputOptions());
// listeners required for regular textboxes, but may cause problems with button stimuli
if (!(this instanceof ButtonStim))
{
this._pixi._addListeners();
}
// check if other TextBox instances are already in focus
const { _drawList = [] } = this.psychoJS.window;
const otherTextBoxWithFocus = _drawList.some(item => item instanceof TextBox &amp;&amp; item._pixi &amp;&amp; item._pixi._hasFocus());
if (this._autofocus &amp;&amp; !otherTextBoxWithFocus)
{
this._pixi._onSurrogateFocus();
}
if (this._multiline)
{
this._pixi._multiline = this._multiline;
}
if (this._editable)
{
this.text = enteredText;
this._pixi.placeholder = this._placeholder;
}
else
{
this._pixi.text = this._text;
}
}
this._pixi.disabled = !this._editable;
const anchor = this._getAnchor();
this._pixi.pivot.x = anchor[0] * this._pixi.width;
this._pixi.pivot.y = anchor[1] * this._pixi.height;
this._pixi.scale.x = this._flipHoriz ? -1 : 1;
this._pixi.scale.y = this._flipVert ? 1 : -1;
this._pixi.rotation = this._ori * Math.PI / 180;
[this._pixi.x, this._pixi.y] = util.to_px(this._pos, this._units, this._win);
this._pixi.alpha = this._opacity;
this._pixi.zIndex = this._depth;
// apply the clip mask:
this._pixi.mask = this._clipMask;
}
/**
* Convert the anchor attribute into numerical values.
*
* @name module:visual.TextBox#_getAnchor
* @function
* @protected
* @return {number[]} - the anchor, as an array of numbers in [0,1]
*/
_getAnchor()
{
const anchor = [0.5, 0.5];
if (this._anchor.indexOf('left') > -1)
{
anchor[0] = 0;
}
else if (this._anchor.indexOf('right') > -1)
{
anchor[0] = 1;
}
if (this._anchor.indexOf('top') > -1)
{
anchor[1] = 0;
}
else if (this._anchor.indexOf('bottom') > -1)
{
anchor[1] = 1;
}
return anchor;
}
}
/**
* &lt;p>This map associates units to default letter height.&lt;/p>
*
* @name module:visual.TextBox#_defaultLetterHeightMap
* @readonly
* @private
*/
TextBox._defaultLetterHeightMap = new Map([
['cm', 1.0],
['deg', 1.0],
['degs', 1.0],
['degFlatPos', 1.0],
['degFlat', 1.0],
['norm', 0.1],
['height', 0.2],
['pix', 20],
['pixels', 20]
]);
/**
* &lt;p>This map associates units to default sizes.&lt;/p>
*
* @name module:visual.TextBox#_defaultSizeMap
* @readonly
* @private
*/
TextBox._defaultSizeMap = new Map([
['cm', [15.0, -1]],
['deg', [15.0, -1]],
['degs', [15.0, -1]],
['degFlatPos', [15.0, -1]],
['degFlat', [15.0, -1]],
['norm', [1, -1]],
['height', [1, -1]],
['pix', [500, -1]],
['pixels', [500, -1]]
]);
</code></pre>
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