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902 lines
17 KiB
JavaScript
902 lines
17 KiB
JavaScript
/**
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* TextInput encapsulates an html <input> element into a PIXI Container.
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*
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* @author 'Mwni' (https://github.com/Mwni), Nikita Agafonov
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* @copyright (c) 2018 Mwni
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* @license Distributed under the terms of the MIT License
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*
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* @note TextInput was initially developed by 'Mwni' and is available under the MIT License.
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* We are currently modifying it to our needs.
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*/
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import * as PIXI from "pixi.js-legacy";
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export class TextInput extends PIXI.Container
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{
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constructor(styles)
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{
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super();
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this._input_style = Object.assign(
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{
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position: "absolute",
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background: "none",
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border: "none",
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outline: "none",
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text: "",
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transformOrigin: "0 0",
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lineHeight: "1",
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boxSizing: "border-box"
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},
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styles.input,
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);
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if (styles.box)
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{
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this._box_generator = typeof styles.box === "function" ? styles.box : new DefaultBoxGenerator(styles.box);
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}
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else
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{
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this._box_generator = null;
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}
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if (this._input_style.hasOwnProperty("multiline"))
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{
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this._multiline = !!this._input_style.multiline;
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delete this._input_style.multiline;
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}
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else
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{
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this._multiline = false;
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}
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this._anchor = new PIXI.ObservablePoint(this._onAnchorUpdate, this, 0, 0);
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this._box_cache = {};
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this._previous = {};
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this._dom_added = false;
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this._dom_visible = true;
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this._placeholder = "";
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this._placeholderColor = 0xa9a9a9;
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this._selection = [0, 0];
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this._restrict_value = "";
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this._createDOMInput();
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this.substituteText = !this._multiline;
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this._setState("DEFAULT");
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}
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// GETTERS & SETTERS
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get substituteText()
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{
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return this._substituted;
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}
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set substituteText(substitute)
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{
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if (this._substituted == substitute)
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{
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return;
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}
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this._substituted = substitute;
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if (substitute)
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{
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this._createSurrogate();
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this._dom_visible = false;
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}
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else
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{
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this._destroySurrogate();
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this._dom_visible = true;
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}
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this.placeholder = this._placeholder;
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this._update();
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}
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get placeholder()
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{
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return this._placeholder;
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}
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set placeholder(text)
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{
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this._placeholder = text;
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if (this._substituted)
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{
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this._updateSurrogate();
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this._dom_input.placeholder = "";
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}
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else
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{
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this._dom_input.placeholder = text;
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}
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}
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get disabled()
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{
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return this._disabled;
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}
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set disabled(disabled)
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{
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this._disabled = disabled;
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this._dom_input.disabled = disabled;
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this._dom_input.contentEditable = !disabled;
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this._setState(disabled ? "DISABLED" : "DEFAULT");
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}
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get maxLength()
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{
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return this._max_length;
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}
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set maxLength(length)
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{
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this._max_length = length;
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this._dom_input.setAttribute("maxlength", length);
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}
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get restrict()
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{
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return this._restrict_regex;
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}
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set restrict(regex)
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{
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if (regex instanceof RegExp)
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{
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regex = regex.toString().slice(1, -1);
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if (regex.charAt(0) !== "^")
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{
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regex = "^" + regex;
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}
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if (regex.charAt(regex.length - 1) !== "$")
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{
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regex = regex + "$";
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}
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regex = new RegExp(regex);
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}
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else
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{
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regex = new RegExp("^[" + regex + "]*$");
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}
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this._restrict_regex = regex;
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}
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get text()
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{
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if (this._dom_input.tagName === "INPUT" || this._dom_input.tagName === "TEXTAREA") {
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return this._dom_input.value;
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}
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// innerText, not textContent properly preserves new lines
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return this._dom_input.innerText;
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}
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set text(text)
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{
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if (this._dom_input.tagName === "INPUT" || this._dom_input.tagName === "TEXTAREA") {
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this._dom_input.value = text;
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} else {
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this._dom_input.innerText = text;
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}
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if (this._substituted)
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{
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this._updateSurrogate();
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}
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}
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get htmlInput()
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{
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return this._dom_input;
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}
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get anchor ()
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{
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return this._anchor;
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}
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set anchor (v)
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{
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this._anchor.copyFrom(v);
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}
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focus(options = { preventScroll: true })
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{
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if (this._substituted && !this.dom_visible)
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{
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this._setDOMInputVisible(true);
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}
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this._dom_input.focus(options);
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}
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blur()
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{
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this._dom_input.blur();
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}
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select()
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{
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this.focus();
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this._dom_input.select();
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}
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setInputStyle(key, value)
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{
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this._input_style[key] = value;
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this._dom_input.style[key] = value;
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if (this._substituted && (key === "fontFamily" || key === "fontSize"))
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{
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this._updateFontMetrics();
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}
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if (this._last_renderer)
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{
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this._update();
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}
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}
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getInputStyle (key) {
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return this._dom_input.style[key];
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}
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destroy(options)
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{
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this._destroyBoxCache();
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super.destroy(options);
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}
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// SETUP
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_createDOMInput()
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{
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if (this._multiline)
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{
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// this._dom_input = document.createElement("textarea");
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// this._dom_input.style.resize = "none";
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this._dom_input = document.createElement("div");
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this._dom_input.contentEditable = "true";
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}
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else
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{
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this._dom_input = document.createElement("input");
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this._dom_input.type = "text";
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}
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for (let key in this._input_style)
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{
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this._dom_input.style[key] = this._input_style[key];
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}
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}
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_addListeners()
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{
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this.on("added", this._onAdded.bind(this));
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this.on("removed", this._onRemoved.bind(this));
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this._dom_input.addEventListener("keydown", this._onInputKeyDown.bind(this));
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this._dom_input.addEventListener("input", this._onInputInput.bind(this));
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this._dom_input.addEventListener("keyup", this._onInputKeyUp.bind(this));
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this._dom_input.addEventListener("focus", this._onFocused.bind(this));
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this._dom_input.addEventListener("blur", this._onBlurred.bind(this));
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}
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_onAnchorUpdate () {
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this.pivot.x = this._anchor.x * this.scale.x * this.width;
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this.pivot.y = this._anchor.y * this.scale.y * this.height;
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}
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_onInputKeyDown(e)
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{
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this._selection = [
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this._dom_input.selectionStart,
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this._dom_input.selectionEnd,
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];
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this.emit("keydown", e.keyCode);
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}
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_onInputInput(e)
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{
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if (this._disabled)
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{
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return;
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}
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if (this._restrict_regex)
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{
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this._applyRestriction();
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}
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if (this._substituted)
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{
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this._updateSubstitution();
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}
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this._updateBox();
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this.emit("input", this.text);
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}
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_onInputKeyUp(e)
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{
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this.emit("keyup", e.keyCode);
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}
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_onFocused()
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{
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this._setState("FOCUSED");
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this.emit("focus");
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}
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_onBlurred()
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{
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this._setState("DEFAULT");
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this.emit("blur");
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}
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_onAdded()
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{
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document.body.appendChild(this._dom_input);
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this._updateDOMInput();
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this._dom_added = true;
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}
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_onRemoved()
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{
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document.body.removeChild(this._dom_input);
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this._dom_added = false;
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}
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_setState(state)
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{
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this.state = state;
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this._updateBox();
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if (this._substituted)
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{
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this._updateSubstitution();
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}
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}
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// RENDER & UPDATE
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// for pixi v4
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renderWebGL(renderer)
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{
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super.renderWebGL(renderer);
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this._renderInternal(renderer);
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}
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// for pixi v4
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renderCanvas(renderer)
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{
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super.renderCanvas(renderer);
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this._renderInternal(renderer);
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}
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// for pixi v5
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render(renderer)
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{
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super.render(renderer);
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this._renderInternal(renderer);
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}
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_renderInternal(renderer)
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{
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this._resolution = renderer.resolution;
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this._last_renderer = renderer;
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this._canvas_bounds = this._getCanvasBounds();
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if (this._needsUpdate())
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{
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this._update();
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}
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}
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_update()
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{
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this._updateDOMInput();
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if (this._substituted)
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{
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this._updateSurrogate();
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}
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this._updateBox();
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}
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_updateBox()
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{
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if (!this._box_generator)
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{
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return;
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}
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if (this._needsNewBoxCache())
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{
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this._buildBoxCache();
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}
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if (
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this.state == this._previous.state
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&& this._box == this._box_cache[this.state]
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)
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{
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return;
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}
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if (this._box)
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{
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this.removeChild(this._box);
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}
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this._box = this._box_cache[this.state];
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this._box.interactive = !this._disabled;
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this.addChildAt(this._box, 0);
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this._previous.state = this.state;
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this.pivot.x = this._anchor.x * this.scale.x * this.width;
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this.pivot.y = this._anchor.y * this.scale.y * this.height;
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}
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_updateSubstitution()
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{
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if (this.state === "FOCUSED")
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{
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this._dom_visible = true;
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this._surrogate.visible = this.text.length === 0;
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}
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else
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{
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this._dom_visible = false;
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this._surrogate.visible = true;
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}
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this._updateDOMInput();
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this._updateSurrogate();
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}
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_updateDOMInput()
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{
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if (!this._canvas_bounds)
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{
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return;
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}
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this._dom_input.style.top = (this._canvas_bounds.top || 0) + "px";
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this._dom_input.style.left = (this._canvas_bounds.left || 0) + "px";
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this._dom_input.style.transform = this._pixiMatrixToCSS(this._getDOMRelativeWorldTransform());
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this._dom_input.style.opacity = this.worldAlpha;
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this._setDOMInputVisible(this.worldVisible && this._dom_visible);
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this._previous.canvas_bounds = this._canvas_bounds;
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this._previous.world_transform = this.worldTransform.clone();
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this._previous.world_alpha = this.worldAlpha;
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this._previous.world_visible = this.worldVisible;
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}
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_applyRestriction()
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{
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if (this._restrict_regex.test(this.text))
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{
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this._restrict_value = this.text;
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}
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else
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{
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this.text = this._restrict_value;
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this._dom_input.setSelectionRange(
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this._selection[0],
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this._selection[1],
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);
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}
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}
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// STATE COMPAIRSON (FOR PERFORMANCE BENEFITS)
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_needsUpdate()
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{
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return (
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!this._comparePixiMatrices(this.worldTransform, this._previous.world_transform)
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|| !this._compareClientRects(this._canvas_bounds, this._previous.canvas_bounds)
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|| this.worldAlpha != this._previous.world_alpha
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|| this.worldVisible != this._previous.world_visible
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);
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}
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_needsNewBoxCache()
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{
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let input_bounds = this._getDOMInputBounds();
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return (
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!this._previous.input_bounds
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|| input_bounds.width != this._previous.input_bounds.width
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|| input_bounds.height != this._previous.input_bounds.height
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);
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}
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// INPUT SUBSTITUTION
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_createSurrogate()
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{
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this._surrogate_hitbox = new PIXI.Graphics();
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this._surrogate_hitbox.alpha = 0;
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this._surrogate_hitbox.interactive = true;
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this._surrogate_hitbox.cursor = "text";
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this._surrogate_hitbox.on("pointerdown", this._onSurrogateFocus.bind(this));
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this.addChild(this._surrogate_hitbox);
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this._surrogate_mask = new PIXI.Graphics();
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this.addChild(this._surrogate_mask);
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this._surrogate = new PIXI.Text("", {});
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this.addChild(this._surrogate);
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this._surrogate.mask = this._surrogate_mask;
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this._updateFontMetrics();
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this._updateSurrogate();
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}
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_updateSurrogate()
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{
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let padding = this._deriveSurrogatePadding();
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let input_bounds = this._getDOMInputBounds();
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this._surrogate.style = this._deriveSurrogateStyle();
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this._surrogate.style.padding = Math.max.apply(Math, padding);
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this._surrogate.y = this._multiline ? padding[0] : (input_bounds.height - this._surrogate.height) / 2;
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this._surrogate.x = padding[3];
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this._surrogate.text = this._deriveSurrogateText();
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switch (this._surrogate.style.align)
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{
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case "left":
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this._surrogate.x = padding[3];
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break;
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case "center":
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this._surrogate.x = input_bounds.width * 0.5 - this._surrogate.width * 0.5;
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break;
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case "right":
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this._surrogate.x = input_bounds.width - padding[1] - this._surrogate.width;
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break;
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}
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this._updateSurrogateHitbox(input_bounds);
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this._updateSurrogateMask(input_bounds, padding);
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}
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_updateSurrogateHitbox(bounds)
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{
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this._surrogate_hitbox.clear();
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this._surrogate_hitbox.beginFill(0);
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this._surrogate_hitbox.drawRect(0, 0, bounds.width, bounds.height);
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this._surrogate_hitbox.endFill();
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this._surrogate_hitbox.interactive = !this._disabled;
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}
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_updateSurrogateMask(bounds, padding)
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{
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this._surrogate_mask.clear();
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this._surrogate_mask.beginFill(0);
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this._surrogate_mask.drawRect(padding[3], 0, bounds.width - padding[3] - padding[1], bounds.height);
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this._surrogate_mask.endFill();
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}
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_destroySurrogate()
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{
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if (!this._surrogate)
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{
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return;
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}
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this.removeChild(this._surrogate);
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this.removeChild(this._surrogate_hitbox);
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this._surrogate.destroy();
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this._surrogate_hitbox.destroy();
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this._surrogate = null;
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this._surrogate_hitbox = null;
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}
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_onSurrogateFocus()
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{
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this._setDOMInputVisible(true);
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// sometimes the input is not being focused by the mouseclick
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setTimeout(this._ensureFocus.bind(this), 10);
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}
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_ensureFocus()
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{
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if (!this._hasFocus())
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{
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this.focus();
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}
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}
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_deriveSurrogateStyle()
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{
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let style = new PIXI.TextStyle();
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for (const key in this._input_style)
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|
{
|
|
switch (key)
|
|
{
|
|
case "color":
|
|
style.fill = this._input_style.color;
|
|
break;
|
|
|
|
case "fontFamily":
|
|
case "fontSize":
|
|
case "fontWeight":
|
|
case "fontVariant":
|
|
case "fontStyle":
|
|
style[key] = this._input_style[key];
|
|
break;
|
|
|
|
case "letterSpacing":
|
|
style.letterSpacing = parseFloat(this._input_style.letterSpacing);
|
|
break;
|
|
|
|
case "textAlign":
|
|
style.align = this._input_style.textAlign;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (this._multiline)
|
|
{
|
|
style.lineHeight = parseFloat(style.fontSize);
|
|
style.wordWrap = true;
|
|
style.wordWrapWidth = this._getDOMInputBounds().width;
|
|
}
|
|
|
|
if (this._dom_input.value.length === 0)
|
|
{
|
|
style.fill = this._placeholderColor;
|
|
}
|
|
|
|
return style;
|
|
}
|
|
|
|
_deriveSurrogatePadding()
|
|
{
|
|
let indent = this._input_style.textIndent ? parseFloat(this._input_style.textIndent) : 0;
|
|
|
|
if (this._input_style.padding && this._input_style.padding.length > 0)
|
|
{
|
|
let components = this._input_style.padding.trim().split(" ");
|
|
|
|
if (components.length == 1)
|
|
{
|
|
let padding = parseFloat(components[0]);
|
|
return [padding, padding, padding, padding + indent];
|
|
}
|
|
else if (components.length == 2)
|
|
{
|
|
let paddingV = parseFloat(components[0]);
|
|
let paddingH = parseFloat(components[1]);
|
|
return [paddingV, paddingH, paddingV, paddingH + indent];
|
|
}
|
|
else if (components.length == 4)
|
|
{
|
|
let padding = components.map((component) =>
|
|
{
|
|
return parseFloat(component);
|
|
});
|
|
padding[3] += indent;
|
|
return padding;
|
|
}
|
|
}
|
|
|
|
return [0, 0, 0, indent];
|
|
}
|
|
|
|
_deriveSurrogateText()
|
|
{
|
|
if (this._dom_input.value.length === 0)
|
|
{
|
|
return this._placeholder;
|
|
}
|
|
|
|
if (this._dom_input.type == "password")
|
|
{
|
|
return "•".repeat(this._dom_input.value.length);
|
|
}
|
|
|
|
return this._dom_input.value;
|
|
}
|
|
|
|
_updateFontMetrics()
|
|
{
|
|
const style = this._deriveSurrogateStyle();
|
|
const font = style.toFontString();
|
|
|
|
this._font_metrics = PIXI.TextMetrics.measureFont(font);
|
|
}
|
|
|
|
// CACHING OF INPUT BOX GRAPHICS
|
|
|
|
_buildBoxCache()
|
|
{
|
|
this._destroyBoxCache();
|
|
|
|
let states = ["DEFAULT", "FOCUSED", "DISABLED"];
|
|
let input_bounds = this._getDOMInputBounds();
|
|
|
|
states.forEach((state) =>
|
|
{
|
|
this._box_cache[state] = this._box_generator(
|
|
input_bounds.width,
|
|
input_bounds.height,
|
|
state,
|
|
);
|
|
});
|
|
|
|
this._previous.input_bounds = input_bounds;
|
|
}
|
|
|
|
_destroyBoxCache()
|
|
{
|
|
if (this._box)
|
|
{
|
|
this.removeChild(this._box);
|
|
this._box = null;
|
|
}
|
|
|
|
for (let i in this._box_cache)
|
|
{
|
|
this._box_cache[i].destroy();
|
|
this._box_cache[i] = null;
|
|
delete this._box_cache[i];
|
|
}
|
|
}
|
|
|
|
// HELPER FUNCTIONS
|
|
|
|
_hasFocus()
|
|
{
|
|
return document.activeElement === this._dom_input;
|
|
}
|
|
|
|
_setDOMInputVisible(visible)
|
|
{
|
|
const definedStyle = this._input_style.display;
|
|
this._dom_input.style.display = visible ? (definedStyle ? definedStyle : "display") : "none";
|
|
}
|
|
|
|
_getCanvasBounds()
|
|
{
|
|
let rect = this._last_renderer.view.getBoundingClientRect();
|
|
let bounds = { top: rect.top, left: rect.left, width: rect.width, height: rect.height };
|
|
bounds.left += window.scrollX;
|
|
bounds.top += window.scrollY;
|
|
return bounds;
|
|
}
|
|
|
|
_getDOMInputBounds()
|
|
{
|
|
let remove_after = false;
|
|
|
|
if (!this._dom_added)
|
|
{
|
|
document.body.appendChild(this._dom_input);
|
|
remove_after = true;
|
|
}
|
|
|
|
let org_transform = this._dom_input.style.transform;
|
|
let org_display = this._dom_input.style.display;
|
|
this._dom_input.style.transform = "";
|
|
this._dom_input.style.display = "block";
|
|
let bounds = this._dom_input.getBoundingClientRect();
|
|
this._dom_input.style.transform = org_transform;
|
|
this._dom_input.style.display = org_display;
|
|
|
|
if (remove_after)
|
|
{
|
|
document.body.removeChild(this._dom_input);
|
|
}
|
|
|
|
return bounds;
|
|
}
|
|
|
|
_getDOMRelativeWorldTransform()
|
|
{
|
|
let canvas_bounds = this._last_renderer.view.getBoundingClientRect();
|
|
let matrix = this.worldTransform.clone();
|
|
|
|
matrix.scale(this._resolution, this._resolution);
|
|
matrix.scale(canvas_bounds.width / this._last_renderer.width, canvas_bounds.height / this._last_renderer.height);
|
|
return matrix;
|
|
}
|
|
|
|
_pixiMatrixToCSS(m)
|
|
{
|
|
return "matrix(" + [m.a, m.b, m.c, m.d, m.tx, m.ty].join(",") + ")";
|
|
}
|
|
|
|
_comparePixiMatrices(m1, m2)
|
|
{
|
|
if (!m1 || !m2)
|
|
{
|
|
return false;
|
|
}
|
|
return (
|
|
m1.a == m2.a
|
|
&& m1.b == m2.b
|
|
&& m1.c == m2.c
|
|
&& m1.d == m2.d
|
|
&& m1.tx == m2.tx
|
|
&& m1.ty == m2.ty
|
|
);
|
|
}
|
|
|
|
_compareClientRects(r1, r2)
|
|
{
|
|
if (!r1 || !r2)
|
|
{
|
|
return false;
|
|
}
|
|
return (
|
|
r1.left == r2.left
|
|
&& r1.top == r2.top
|
|
&& r1.width == r2.width
|
|
&& r1.height == r2.height
|
|
);
|
|
}
|
|
}
|
|
|
|
function DefaultBoxGenerator(styles)
|
|
{
|
|
styles = styles || { fill: 0xcccccc };
|
|
|
|
if (styles.default)
|
|
{
|
|
styles.focused = styles.focused || styles.default;
|
|
styles.disabled = styles.disabled || styles.default;
|
|
}
|
|
else
|
|
{
|
|
let temp_styles = styles;
|
|
styles = {};
|
|
styles.default = styles.focused = styles.disabled = temp_styles;
|
|
}
|
|
|
|
return function(w, h, state)
|
|
{
|
|
let style = styles[state.toLowerCase()];
|
|
let box = new PIXI.Graphics();
|
|
|
|
if (this._multiline) {
|
|
box.interactive = !this._disabled;
|
|
box.on("pointerdown", () => {
|
|
this._dom_input.focus();
|
|
});
|
|
}
|
|
|
|
box.beginFill(style.fill, style.alpha);
|
|
|
|
if (style.stroke)
|
|
{
|
|
box.lineStyle(
|
|
style.stroke.width ?? 1,
|
|
style.stroke.color,
|
|
style.stroke.alpha,
|
|
);
|
|
}
|
|
|
|
if (style.rounded)
|
|
{
|
|
box.drawRoundedRect(0, 0, w, h, style.rounded);
|
|
}
|
|
else
|
|
{
|
|
box.drawRect(0, 0, w, h);
|
|
}
|
|
|
|
box.endFill();
|
|
box.closePath();
|
|
|
|
return box;
|
|
};
|
|
}
|