Yajbir Singh
107 lines
3.4 KiB
JavaScript
107 lines
3.4 KiB
JavaScript
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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"use strict";
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(function(window)
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{
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/**
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* Класс для шейпинга простой текстовой строки, идущей с одном шрифте
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* @constructor
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*/
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function StringShaper()
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{
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AscFonts.CTextShaper.call(this);
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this.textPr = null;
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this.graphemes = [];
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this.widths = [];
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}
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StringShaper.prototype = Object.create(AscFonts.CTextShaper.prototype);
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StringShaper.prototype.constructor = StringShaper;
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StringShaper.prototype.Shape = function(codePoints, textPr)
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{
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this.textPr = textPr;
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this.codePoints = codePoints.slice();
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this.graphemes = [];
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this.widths = [];
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for (let i = 0; i < codePoints.length; ++i)
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{
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this.AppendToString(codePoints[i]);
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}
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this.FlushWord();
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};
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StringShaper.prototype.FlushGrapheme = function(grapheme, width, codePointCount, isLigature)
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{
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if (codePointCount <= 0)
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return
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this.graphemes.push(grapheme);
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this.widths.push(width);
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if (this.IsRtlDirection())
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this.BufferIndex -= codePointCount;
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else
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this.BufferIndex += codePointCount;
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};
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StringShaper.prototype.GetFontSlot = function(codePoint)
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{
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if (!this.textPr)
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return AscWord.fontslot_ASCII;
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return AscWord.GetFontSlotByTextPr(codePoint, this.textPr);
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};
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StringShaper.prototype.GetDirection = function(script)
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{
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return AscFonts.HB_DIRECTION.HB_DIRECTION_LTR;
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};
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StringShaper.prototype.GetFontInfo = function(fontSlot)
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{
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if (!this.textPr)
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return AscFonts.DEFAULT_TEXTFONTINFO;
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return this.textPr.GetFontInfo(fontSlot);
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};
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StringShaper.prototype.GetGraphemes = function()
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{
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return this.graphemes;
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};
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StringShaper.prototype.GetWidths = function()
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{
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return this.widths;
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};
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//--------------------------------------------------------export----------------------------------------------------
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window['AscFonts'] = window['AscFonts'] || {};
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window['AscFonts'].StringShaper = StringShaper;
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})(window);
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