367 lines
11 KiB
JavaScript
367 lines
11 KiB
JavaScript
/*
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* (c) Copyright Ascensio System SIA 2010-2024
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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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(
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/**
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* @param {Window} window
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* @param {undefined} undefined
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*/
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function (window, undefined) {
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/*
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* Import
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* -----------------------------------------------------------------------------
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*/
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var asc = window["Asc"];
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var asc_lastindexof = asc.lastIndexOf;
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function CharOffset(left, top, height, line) {
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this.left = left;
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this.top = top;
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this.height = height;
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this.lineIndex = line;
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}
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/**
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* CellTextRender
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* -----------------------------------------------------------------------------
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* @param {DrawingContext} drawingCtx Context for drawing on
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*
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* @constructor
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* @memberOf Asc
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* @extends {AscCommonExcel.StringRender}
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*/
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function CellTextRender(drawingCtx) {
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AscCommonExcel.StringRender.apply(this, arguments);
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/** @type RegExp */
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this.reWordBegining = new XRegExp("[^\\p{L}\\p{N}\\'][\\p{L}\\p{N}]", "i");
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return this;
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}
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CellTextRender.prototype = Object.create(AscCommonExcel.StringRender.prototype);
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CellTextRender.prototype.constructor = CellTextRender;
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CellTextRender.prototype.getLinesCount = function () {
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return this.lines.length;
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};
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CellTextRender.prototype.getLineInfo = function (index) {
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return this.lines.length > 0 && index >= 0 && index < this.lines.length ? this.lines[index] : null;
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};
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CellTextRender.prototype.calcLineOffset = function (index) {
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if (index < 0) {
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index = 0;
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}
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if (index > this.lines.length) {
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index = this.lines.length;
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}
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var zoom = this.drawingCtx.getZoom();
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for (var i = 0, h = 0, l = this.lines; i < index; ++i) {
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h += Asc.round(l[i].th * zoom);
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}
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return h;
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};
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CellTextRender.prototype.getPrevChar = function (pos, skipCombined) {
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if (pos <= 0)
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return 0;
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else if (pos > this.chars.length)
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return this.chars.length;
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--pos;
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// By default we skip combined chars
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if (false === skipCombined)
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return pos;
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while (pos > 0 && this._isCombinedChar(pos)) {
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--pos;
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}
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return pos;
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};
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CellTextRender.prototype.getNextChar = function (pos) {
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if (pos >= this.chars.length)
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return this.chars.length;
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else if (pos < 0)
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return 0;
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++pos;
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while (pos < this.chars.length && this._isCombinedChar(pos)) {
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++pos;
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}
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return pos;
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};
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CellTextRender.prototype.getPrevWord = function (pos) {
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//TODO регулярку не меняю, перегоняю в строку
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let s = AscCommonExcel.convertUnicodeToSimpleString(this.chars);
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let i = asc_lastindexof(s.slice(0, pos), this.reWordBegining);
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return i >= 0 ? i + 1 : 0;
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};
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CellTextRender.prototype.getNextWord = function (pos) {
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//TODO регулярку не меняю, перегоняю в строку
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let s = AscCommonExcel.convertUnicodeToSimpleString(this.chars);
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let i = s.slice(pos).search(this.reWordBegining);
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return i >= 0 ? pos + (i + 1) : this.getEndOfLine(pos);
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};
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CellTextRender.prototype.getBeginOfLine = function (pos) {
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pos = pos < 0 ? 0 : Math.min(pos, this.chars.length);
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for (var l = this.lines, i = 0; i < l.length; ++i) {
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if (pos >= l[i].beg && pos <= l[i].end) {
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return l[i].beg;
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}
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}
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// pos - в конце текста
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var lastLine = l.length - 1;
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var lastChar = this.chars.length - 1;
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return this.charWidths[lastChar] !== 0 ? l[lastLine].beg : pos;
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};
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CellTextRender.prototype.getEndOfLine = function (pos) {
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pos = pos < 0 ? 0 : Math.min(pos, this.chars.length);
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var l = this.lines;
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var lastLine = l.length - 1;
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for (var i = 0; i < lastLine; ++i) {
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if (pos >= l[i].beg && pos <= l[i].end) {
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return l[i].end;
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}
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}
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// pos - на последней линии
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var lastChar = this.chars.length - 1;
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return pos > lastChar ? pos : lastChar + (this.charWidths[lastChar] !== 0 ? 1 : 0);
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};
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CellTextRender.prototype.getBeginOfText = function () {
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return 0;
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};
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CellTextRender.prototype.getEndOfText = function () {
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return this.chars.length;
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};
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CellTextRender.prototype.getPrevLine = function (pos) {
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pos = pos < 0 ? 0 : Math.min(pos, this.chars.length);
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for (var l = this.lines, i = 0; i < l.length; ++i) {
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if (pos >= l[i].beg && pos <= l[i].end) {
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return i <= 0 ? 0 : Math.min(l[i - 1].beg + pos - l[i].beg, l[i - 1].end);
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}
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}
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// pos - в конце текста
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var lastLine = l.length - 1;
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var lastChar = this.chars.length - 1;
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return this.charWidths[lastChar] === 0 || l.length < 2 ?
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(0 > lastLine ? 0 : l[lastLine].beg) :
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lastChar > 0 ? Math.min(l[lastLine - 1].beg + pos - l[lastLine].beg, l[lastLine - 1].end) : 0;
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};
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CellTextRender.prototype.getNextLine = function (pos) {
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pos = pos < 0 ? 0 : Math.min(pos, this.chars.length);
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var l = this.lines;
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var lastLine = l.length - 1;
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for (var i = 0; i < lastLine; ++i) {
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if (pos >= l[i].beg && pos <= l[i].end) {
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return Math.min(l[i + 1].beg + pos - l[i].beg, l[i + 1].end);
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}
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}
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// pos - на последней линии
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return this.chars.length;
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};
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CellTextRender.prototype.getCharInfo = function (pos) {
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for (var p = this.charProps[pos]; (!p || !p.font) && pos > 0; --pos) {
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p = this.charProps[pos - 1];
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}
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return {
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fsz: p.font.FontSize,
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dh: p && p.lm && p.lm.bl2 > 0 ? p.lm.bl2 - p.lm.bl : 0,
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h: p && p.lm ? p.lm.th : 0
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};
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};
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CellTextRender.prototype.charOffset = function (pos, lineIndex, h) {
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var zoom = this.drawingCtx.getZoom();
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var li = this.lines[lineIndex];
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return new CharOffset(li.startX + (pos > 0 ? this._calcCharsWidth(li.beg, pos - 1) : 0), Asc.round(
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h * zoom), Asc.round(li.th * zoom), lineIndex);
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};
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CellTextRender.prototype.calcCharOffset = function (pos, lineIndex) {
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var t = this, l = t.lines, i, h, co;
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if (l.length < 1) {
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return null;
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}
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if (pos < 0) {
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pos = 0;
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}
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if (pos > t.chars.length) {
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pos = t.chars.length;
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}
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for (i = 0, h = 0; i < l.length; ++i) {
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if (pos >= l[i].beg && pos <= l[i].end) {
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//end of line and start of line can have same index
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if (!(lineIndex != null && (pos === l[i].end/* || pos === l[i].beg*/) && lineIndex !== i)) {
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return this.charOffset(pos, i, h);
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}
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}
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if (i !== l.length - 1) {
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h += l[i].th;
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}
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}
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co = this.charOffset(pos, i - 1, h);
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return co;
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};
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CellTextRender.prototype.getCharsCount = function () {
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return this.chars.length;
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};
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CellTextRender.prototype.getChars = function (pos, len) {
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return this.chars.slice(pos, pos + len);
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};
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CellTextRender.prototype.getCharWidth = function (pos) {
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return this.charWidths[pos];
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};
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CellTextRender.prototype.getCharPosByXY = function(x, y, topLine, zoom) {
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let line = this.getLineByY(y, topLine, zoom);
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if (line < 0) {
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return -1;
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}
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let lineInfo = this.getLineInfo(line);
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let _x = lineInfo.startX;
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let dist = Math.abs(x - _x);
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let resultPos = lineInfo.beg;
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for (let charPos = lineInfo.beg; charPos <= lineInfo.end; ++charPos) {
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if (!this._isCombinedChar(charPos) && dist > Math.abs(x - _x)) {
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dist = Math.abs(x - _x);
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resultPos = charPos;
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}
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_x += this.getCharWidth(charPos);
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}
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if (Math.abs(x - _x) < dist)
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resultPos = line === this.getLinesCount() - 1 ? lineInfo.end + 1 : lineInfo.end;
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return resultPos;
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};
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CellTextRender.prototype.getCharPosByXY = function(x, y, topLine, zoom) {
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let line = this.getLineByY(y, topLine, zoom);
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if (line < 0) {
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return -1;
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}
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let lineInfo = this.getLineInfo(line);
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let _x = lineInfo.startX;
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let dist = Math.abs(x - _x);
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let resultPos = lineInfo.beg;
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for (let charPos = lineInfo.beg; charPos <= lineInfo.end; ++charPos) {
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if (!this._isCombinedChar(charPos) && dist > Math.abs(x - _x)) {
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dist = Math.abs(x - _x);
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resultPos = charPos;
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}
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_x += this.getCharWidth(charPos);
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}
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if (Math.abs(x - _x) < dist)
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resultPos = line === this.getLinesCount() - 1 ? lineInfo.end + 1 : lineInfo.end;
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// Если текст обрабатывался как bidi, корректируем позицию
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if (this.bidiProcessed && this.baseDirection === AscFonts.HB_DIRECTION.HB_DIRECTION_RTL) {
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let line = this.getLineByY(y, topLine, zoom);
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if (line >= 0) {
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let lineInfo = this.getLineInfo(line);
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// Для RTL строк логика поиска позиции может быть скорректирована
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// Пока оставляем базовую логику, но это место для дальнейших улучшений
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}
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}
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return resultPos;
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};
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CellTextRender.prototype.getLineByY = function(y, topLine, zoom) {
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let lineCount = this.getLinesCount();
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if (lineCount <= 0) {
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return -1;
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}
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let lineInfo;
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for (let _y = 0, line = Math.max(topLine, 0); line < lineCount; ++line) {
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lineInfo = this.getLineInfo(line);
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_y += Asc.round(lineInfo.th * zoom);
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if (y <= _y) {
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return line;
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}
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}
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return lineCount - 1;
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};
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//------------------------------------------------------------export---------------------------------------------------
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window['AscCommonExcel'] = window['AscCommonExcel'] || {};
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window["AscCommonExcel"].CellTextRender = CellTextRender;
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}
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)(window);
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