353 lines
15 KiB
JavaScript
353 lines
15 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Text = exports.stringToArray = void 0;
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const Util_1 = require("../Util");
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const Factory_1 = require("../Factory");
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const Shape_1 = require("../Shape");
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const Validators_1 = require("../Validators");
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const Global_1 = require("../Global");
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function stringToArray(string) {
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return Array.from(string);
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}
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exports.stringToArray = stringToArray;
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var AUTO = 'auto', CENTER = 'center', JUSTIFY = 'justify', CHANGE_KONVA = 'Change.konva', CONTEXT_2D = '2d', DASH = '-', LEFT = 'left', TEXT = 'text', TEXT_UPPER = 'Text', TOP = 'top', BOTTOM = 'bottom', MIDDLE = 'middle', NORMAL = 'normal', PX_SPACE = 'px ', SPACE = ' ', RIGHT = 'right', WORD = 'word', CHAR = 'char', NONE = 'none', ELLIPSIS = '…', ATTR_CHANGE_LIST = [
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'fontFamily',
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'fontSize',
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'fontStyle',
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'fontVariant',
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'padding',
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'align',
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'verticalAlign',
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'lineHeight',
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'text',
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'width',
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'height',
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'wrap',
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'ellipsis',
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'letterSpacing',
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], attrChangeListLen = ATTR_CHANGE_LIST.length;
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function normalizeFontFamily(fontFamily) {
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return fontFamily
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.split(',')
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.map((family) => {
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family = family.trim();
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const hasSpace = family.indexOf(' ') >= 0;
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const hasQuotes = family.indexOf('"') >= 0 || family.indexOf("'") >= 0;
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if (hasSpace && !hasQuotes) {
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family = `"${family}"`;
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}
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return family;
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})
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.join(', ');
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}
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var dummyContext;
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function getDummyContext() {
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if (dummyContext) {
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return dummyContext;
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}
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dummyContext = Util_1.Util.createCanvasElement().getContext(CONTEXT_2D);
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return dummyContext;
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}
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function _fillFunc(context) {
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context.fillText(this._partialText, this._partialTextX, this._partialTextY);
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}
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function _strokeFunc(context) {
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context.strokeText(this._partialText, this._partialTextX, this._partialTextY);
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}
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function checkDefaultFill(config) {
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config = config || {};
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if (!config.fillLinearGradientColorStops &&
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!config.fillRadialGradientColorStops &&
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!config.fillPatternImage) {
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config.fill = config.fill || 'black';
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}
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return config;
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}
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class Text extends Shape_1.Shape {
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constructor(config) {
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super(checkDefaultFill(config));
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this._partialTextX = 0;
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this._partialTextY = 0;
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for (var n = 0; n < attrChangeListLen; n++) {
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this.on(ATTR_CHANGE_LIST[n] + CHANGE_KONVA, this._setTextData);
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}
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this._setTextData();
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}
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_sceneFunc(context) {
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var textArr = this.textArr, textArrLen = textArr.length;
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if (!this.text()) {
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return;
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}
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var padding = this.padding(), fontSize = this.fontSize(), lineHeightPx = this.lineHeight() * fontSize, verticalAlign = this.verticalAlign(), alignY = 0, align = this.align(), totalWidth = this.getWidth(), letterSpacing = this.letterSpacing(), fill = this.fill(), textDecoration = this.textDecoration(), shouldUnderline = textDecoration.indexOf('underline') !== -1, shouldLineThrough = textDecoration.indexOf('line-through') !== -1, n;
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var translateY = 0;
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var translateY = lineHeightPx / 2;
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var lineTranslateX = 0;
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var lineTranslateY = 0;
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context.setAttr('font', this._getContextFont());
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context.setAttr('textBaseline', MIDDLE);
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context.setAttr('textAlign', LEFT);
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if (verticalAlign === MIDDLE) {
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alignY = (this.getHeight() - textArrLen * lineHeightPx - padding * 2) / 2;
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}
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else if (verticalAlign === BOTTOM) {
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alignY = this.getHeight() - textArrLen * lineHeightPx - padding * 2;
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}
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context.translate(padding, alignY + padding);
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for (n = 0; n < textArrLen; n++) {
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var lineTranslateX = 0;
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var lineTranslateY = 0;
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var obj = textArr[n], text = obj.text, width = obj.width, lastLine = n !== textArrLen - 1, spacesNumber, oneWord, lineWidth;
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context.save();
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if (align === RIGHT) {
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lineTranslateX += totalWidth - width - padding * 2;
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}
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else if (align === CENTER) {
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lineTranslateX += (totalWidth - width - padding * 2) / 2;
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}
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if (shouldUnderline) {
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context.save();
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context.beginPath();
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context.moveTo(lineTranslateX, translateY + lineTranslateY + Math.round(fontSize / 2));
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spacesNumber = text.split(' ').length - 1;
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oneWord = spacesNumber === 0;
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lineWidth =
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align === JUSTIFY && lastLine && !oneWord
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? totalWidth - padding * 2
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: width;
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context.lineTo(lineTranslateX + Math.round(lineWidth), translateY + lineTranslateY + Math.round(fontSize / 2));
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context.lineWidth = fontSize / 15;
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context.strokeStyle = fill;
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context.stroke();
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context.restore();
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}
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if (shouldLineThrough) {
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context.save();
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context.beginPath();
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context.moveTo(lineTranslateX, translateY + lineTranslateY);
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spacesNumber = text.split(' ').length - 1;
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oneWord = spacesNumber === 0;
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lineWidth =
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align === JUSTIFY && lastLine && !oneWord
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? totalWidth - padding * 2
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: width;
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context.lineTo(lineTranslateX + Math.round(lineWidth), translateY + lineTranslateY);
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context.lineWidth = fontSize / 15;
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context.strokeStyle = fill;
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context.stroke();
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context.restore();
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}
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if (letterSpacing !== 0 || align === JUSTIFY) {
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spacesNumber = text.split(' ').length - 1;
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var array = stringToArray(text);
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for (var li = 0; li < array.length; li++) {
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var letter = array[li];
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if (letter === ' ' && n !== textArrLen - 1 && align === JUSTIFY) {
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lineTranslateX += (totalWidth - padding * 2 - width) / spacesNumber;
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}
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this._partialTextX = lineTranslateX;
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this._partialTextY = translateY + lineTranslateY;
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this._partialText = letter;
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context.fillStrokeShape(this);
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lineTranslateX += this.measureSize(letter).width + letterSpacing;
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}
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}
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else {
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this._partialTextX = lineTranslateX;
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this._partialTextY = translateY + lineTranslateY;
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this._partialText = text;
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context.fillStrokeShape(this);
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}
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context.restore();
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if (textArrLen > 1) {
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translateY += lineHeightPx;
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}
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}
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}
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_hitFunc(context) {
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var width = this.getWidth(), height = this.getHeight();
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context.beginPath();
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context.rect(0, 0, width, height);
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context.closePath();
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context.fillStrokeShape(this);
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}
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setText(text) {
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var str = Util_1.Util._isString(text)
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? text
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: text === null || text === undefined
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? ''
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: text + '';
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this._setAttr(TEXT, str);
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return this;
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}
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getWidth() {
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var isAuto = this.attrs.width === AUTO || this.attrs.width === undefined;
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return isAuto ? this.getTextWidth() + this.padding() * 2 : this.attrs.width;
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}
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getHeight() {
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var isAuto = this.attrs.height === AUTO || this.attrs.height === undefined;
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return isAuto
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? this.fontSize() * this.textArr.length * this.lineHeight() +
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this.padding() * 2
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: this.attrs.height;
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}
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getTextWidth() {
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return this.textWidth;
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}
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getTextHeight() {
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Util_1.Util.warn('text.getTextHeight() method is deprecated. Use text.height() - for full height and text.fontSize() - for one line height.');
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return this.textHeight;
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}
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measureSize(text) {
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var _context = getDummyContext(), fontSize = this.fontSize(), metrics;
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_context.save();
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_context.font = this._getContextFont();
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metrics = _context.measureText(text);
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_context.restore();
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return {
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width: metrics.width,
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height: fontSize,
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};
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}
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_getContextFont() {
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return (this.fontStyle() +
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SPACE +
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this.fontVariant() +
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SPACE +
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(this.fontSize() + PX_SPACE) +
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normalizeFontFamily(this.fontFamily()));
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}
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_addTextLine(line) {
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if (this.align() === JUSTIFY) {
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line = line.trim();
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}
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var width = this._getTextWidth(line);
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return this.textArr.push({ text: line, width: width });
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}
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_getTextWidth(text) {
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var letterSpacing = this.letterSpacing();
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var length = text.length;
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return (getDummyContext().measureText(text).width +
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(length ? letterSpacing * (length - 1) : 0));
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}
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_setTextData() {
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var lines = this.text().split('\n'), fontSize = +this.fontSize(), textWidth = 0, lineHeightPx = this.lineHeight() * fontSize, width = this.attrs.width, height = this.attrs.height, fixedWidth = width !== AUTO && width !== undefined, fixedHeight = height !== AUTO && height !== undefined, padding = this.padding(), maxWidth = width - padding * 2, maxHeightPx = height - padding * 2, currentHeightPx = 0, wrap = this.wrap(), shouldWrap = wrap !== NONE, wrapAtWord = wrap !== CHAR && shouldWrap, shouldAddEllipsis = this.ellipsis();
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this.textArr = [];
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getDummyContext().font = this._getContextFont();
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var additionalWidth = shouldAddEllipsis ? this._getTextWidth(ELLIPSIS) : 0;
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for (var i = 0, max = lines.length; i < max; ++i) {
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var line = lines[i];
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var lineWidth = this._getTextWidth(line);
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if (fixedWidth && lineWidth > maxWidth) {
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while (line.length > 0) {
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var low = 0, high = line.length, match = '', matchWidth = 0;
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while (low < high) {
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var mid = (low + high) >>> 1, substr = line.slice(0, mid + 1), substrWidth = this._getTextWidth(substr) + additionalWidth;
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if (substrWidth <= maxWidth) {
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low = mid + 1;
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match = substr;
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matchWidth = substrWidth;
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}
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else {
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high = mid;
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}
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}
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if (match) {
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if (wrapAtWord) {
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var wrapIndex;
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var nextChar = line[match.length];
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var nextIsSpaceOrDash = nextChar === SPACE || nextChar === DASH;
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if (nextIsSpaceOrDash && matchWidth <= maxWidth) {
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wrapIndex = match.length;
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}
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else {
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wrapIndex =
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Math.max(match.lastIndexOf(SPACE), match.lastIndexOf(DASH)) +
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1;
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}
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if (wrapIndex > 0) {
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low = wrapIndex;
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match = match.slice(0, low);
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matchWidth = this._getTextWidth(match);
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}
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}
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match = match.trimRight();
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this._addTextLine(match);
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textWidth = Math.max(textWidth, matchWidth);
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currentHeightPx += lineHeightPx;
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if (!shouldWrap ||
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(fixedHeight && currentHeightPx + lineHeightPx > maxHeightPx)) {
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var lastLine = this.textArr[this.textArr.length - 1];
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if (lastLine) {
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if (shouldAddEllipsis) {
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var haveSpace = this._getTextWidth(lastLine.text + ELLIPSIS) < maxWidth;
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if (!haveSpace) {
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lastLine.text = lastLine.text.slice(0, lastLine.text.length - 3);
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}
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this.textArr.splice(this.textArr.length - 1, 1);
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this._addTextLine(lastLine.text + ELLIPSIS);
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}
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}
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break;
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}
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line = line.slice(low);
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line = line.trimLeft();
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if (line.length > 0) {
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lineWidth = this._getTextWidth(line);
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if (lineWidth <= maxWidth) {
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this._addTextLine(line);
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currentHeightPx += lineHeightPx;
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textWidth = Math.max(textWidth, lineWidth);
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break;
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}
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}
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}
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else {
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break;
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}
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}
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}
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else {
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this._addTextLine(line);
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currentHeightPx += lineHeightPx;
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textWidth = Math.max(textWidth, lineWidth);
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}
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if (fixedHeight && currentHeightPx + lineHeightPx > maxHeightPx) {
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break;
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}
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}
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this.textHeight = fontSize;
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this.textWidth = textWidth;
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}
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getStrokeScaleEnabled() {
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return true;
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}
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}
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exports.Text = Text;
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Text.prototype._fillFunc = _fillFunc;
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Text.prototype._strokeFunc = _strokeFunc;
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Text.prototype.className = TEXT_UPPER;
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Text.prototype._attrsAffectingSize = [
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'text',
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'fontSize',
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'padding',
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'wrap',
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'lineHeight',
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'letterSpacing',
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];
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(0, Global_1._registerNode)(Text);
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Factory_1.Factory.overWriteSetter(Text, 'width', (0, Validators_1.getNumberOrAutoValidator)());
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Factory_1.Factory.overWriteSetter(Text, 'height', (0, Validators_1.getNumberOrAutoValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'fontFamily', 'Arial');
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Factory_1.Factory.addGetterSetter(Text, 'fontSize', 12, (0, Validators_1.getNumberValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'fontStyle', NORMAL);
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Factory_1.Factory.addGetterSetter(Text, 'fontVariant', NORMAL);
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Factory_1.Factory.addGetterSetter(Text, 'padding', 0, (0, Validators_1.getNumberValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'align', LEFT);
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Factory_1.Factory.addGetterSetter(Text, 'verticalAlign', TOP);
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Factory_1.Factory.addGetterSetter(Text, 'lineHeight', 1, (0, Validators_1.getNumberValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'wrap', WORD);
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Factory_1.Factory.addGetterSetter(Text, 'ellipsis', false, (0, Validators_1.getBooleanValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'letterSpacing', 0, (0, Validators_1.getNumberValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'text', '', (0, Validators_1.getStringValidator)());
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Factory_1.Factory.addGetterSetter(Text, 'textDecoration', '');
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