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melekhin
357
QWERTYkez.WordProcessor/Builders/FormulaHelper.cs
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357
QWERTYkez.WordProcessor/Builders/FormulaHelper.cs
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using Base = DocumentFormat.OpenXml.Math.Base;
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using ControlProperties = DocumentFormat.OpenXml.Math.ControlProperties;
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using Degree = DocumentFormat.OpenXml.Math.Degree;
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using Denominator = DocumentFormat.OpenXml.Math.Denominator;
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using Fraction = DocumentFormat.OpenXml.Math.Fraction;
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using FractionProperties = DocumentFormat.OpenXml.Math.FractionProperties;
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using HideDegree = DocumentFormat.OpenXml.Math.HideDegree;
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using MathRun = DocumentFormat.OpenXml.Math.Run;
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using MathRunProperties = DocumentFormat.OpenXml.Math.RunProperties;
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using MathText = DocumentFormat.OpenXml.Math.Text;
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using Numerator = DocumentFormat.OpenXml.Math.Numerator;
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using Radical = DocumentFormat.OpenXml.Math.Radical;
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using RadicalProperties = DocumentFormat.OpenXml.Math.RadicalProperties;
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using SubArgument = DocumentFormat.OpenXml.Math.SubArgument;
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using Subscript = DocumentFormat.OpenXml.Math.Subscript;
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using SubSuperscript = DocumentFormat.OpenXml.Math.SubSuperscript;
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using SuperArgument = DocumentFormat.OpenXml.Math.SuperArgument;
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using Superscript = DocumentFormat.OpenXml.Math.Superscript;
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namespace QWERTYkez.WordProcessor.Builders;
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internal static class FormulaHelper
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{
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// Вспомогательный метод для создания MathRun с форматированием
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public static MathRun CreateMathRun(FontProps? font)
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{
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var mathRun = new MathRun();
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// 1. Математический стиль (полужирный/курсив) – добавляем первым
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if (font is not null && font.TryExtractForMath(out var mathStyleElements))
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{
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var mathPr = new MathRunProperties(mathStyleElements);
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mathRun.AppendChild(mathPr);
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}
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// 2. Wordprocessing: цвет, размер, подчёркивание (без семейства шрифта)
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var wordPr = new RunProperties();
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if (font is not null && font.TryExtractWithoutFamily(out var wordElements))
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{
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foreach (var elem in wordElements)
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wordPr.AppendChild(elem.CloneNode(true));
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}
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mathRun.AppendChild(wordPr);
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return mathRun;
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}
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public static void AddText(OpenXmlElement parent, string text, FontProps? font)
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{
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if (parent is MathRun mathRun)
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{
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mathRun.AppendChild(new MathText(text));
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}
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else
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{
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var run = CreateMathRun(font);
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run.AppendChild(new MathText(text));
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parent.AppendChild(run);
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}
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}
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public static Fraction CreateFraction(
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Action<IFormula> numeratorBuilder,
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Action<IFormula> denominatorBuilder,
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IFormula builder)
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{
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var fraction = new Fraction();
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var font = builder.BaseFont;
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// Добавляем свойства дроби с форматированием (для черты дроби)
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var fPr = new FractionProperties();
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if (font.TryExtractWithoutFamily(out var wordElements))
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{
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var ctrlPr = new ControlProperties();
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var rPr = new RunProperties();
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foreach (var elem in wordElements)
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rPr.AppendChild(elem.CloneNode(true));
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rPr.AppendChild(new RunFonts { Ascii = "Cambria Math", HighAnsi = "Cambria Math" });
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ctrlPr.AppendChild(rPr);
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fPr.AppendChild(ctrlPr);
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}
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fraction.AppendChild(fPr);
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// Числитель
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var numeratorElem = new Numerator();
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fraction.AppendChild(numeratorElem);
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builder.PushContext(numeratorElem);
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numeratorBuilder(builder);
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builder.PopContext();
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// Знаменатель
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var denominatorElem = new Denominator();
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fraction.AppendChild(denominatorElem);
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builder.PushContext(denominatorElem);
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denominatorBuilder(builder);
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builder.PopContext();
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return fraction;
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}
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public static Radical CreateRadical(
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Action<IFormula> radicandBuilder,
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Action<IFormula>? degreeBuilder,
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IFormula builder)
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{
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var radical = new Radical();
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var font = builder.BaseFont;
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var radPr = new RadicalProperties();
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// Цвет, размер и подчёркивание для знака корня (ControlProperties)
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if (font is not null && font.TryExtractWithoutFamily(out var wordElements))
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{
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var ctrlPr = new ControlProperties();
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var rPr = new RunProperties();
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foreach (var elem in wordElements)
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rPr.AppendChild(elem.CloneNode(true));
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rPr.AppendChild(new RunFonts { Ascii = "Cambria Math", HighAnsi = "Cambria Math" });
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ctrlPr.AppendChild(rPr);
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radPr.AppendChild(ctrlPr);
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}
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// Если степень не задана, скрываем её
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if (degreeBuilder is null)
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{
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radPr.HideDegree = new HideDegree { Val = DocumentFormat.OpenXml.Math.BooleanValues.One };
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}
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// Добавляем свойства радикала (с цветом)
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radical.AppendChild(radPr);
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// Степень (если есть)
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if (degreeBuilder is not null)
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{
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var degree = new Degree();
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radical.AppendChild(degree);
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builder.PushContext(degree);
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degreeBuilder(builder);
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builder.PopContext();
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}
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// Подкоренное выражение
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var radicand = new Base();
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radical.AppendChild(radicand);
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builder.PushContext(radicand);
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radicandBuilder(builder);
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builder.PopContext();
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return radical;
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}
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public static void AddIntegral(
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OpenXmlElement currentContext,
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Action<IFormula> functionBuilder,
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Action<IFormula> differentialBuilder,
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Action<IFormula>? lowerLimitBuilder,
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Action<IFormula>? upperLimitBuilder,
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IFormula builder)
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{
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var font = builder.BaseFont;
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if (lowerLimitBuilder is null && upperLimitBuilder is null)
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{
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var integralRun = CreateMathRun(font);
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integralRun.AppendChild(new MathText("∫"));
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currentContext.AppendChild(integralRun);
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var funcRun = CreateMathRun(font);
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currentContext.AppendChild(funcRun);
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builder.PushContext(funcRun);
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functionBuilder(builder);
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builder.PopContext();
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var diffRun = CreateMathRun(font);
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currentContext.AppendChild(diffRun);
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builder.PushContext(diffRun);
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differentialBuilder(builder);
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builder.PopContext();
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}
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else
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{
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var integralWithLimits = new SubSuperscript();
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currentContext.AppendChild(integralWithLimits);
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var baseElem = new Base();
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var integralRun = CreateMathRun(font);
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integralRun.AppendChild(new MathText("∫"));
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baseElem.AppendChild(integralRun);
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integralWithLimits.AppendChild(baseElem);
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if (lowerLimitBuilder is not null)
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{
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var subArg = new SubArgument();
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integralWithLimits.AppendChild(subArg);
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builder.PushContext(subArg);
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lowerLimitBuilder(builder);
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builder.PopContext();
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}
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if (upperLimitBuilder is not null)
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{
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var superArg = new SuperArgument();
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integralWithLimits.AppendChild(superArg);
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builder.PushContext(superArg);
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upperLimitBuilder(builder);
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builder.PopContext();
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}
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var funcRun = CreateMathRun(font);
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currentContext.AppendChild(funcRun);
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builder.PushContext(funcRun);
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functionBuilder(builder);
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builder.PopContext();
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var diffRun = CreateMathRun(font);
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currentContext.AppendChild(diffRun);
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builder.PushContext(diffRun);
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differentialBuilder(builder);
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builder.PopContext();
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}
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}
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public static void AddSum(
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OpenXmlElement currentContext,
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Action<IFormula> expressionBuilder,
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Action<IFormula>? lowerLimitBuilder,
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Action<IFormula>? upperLimitBuilder,
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IFormula builder)
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{
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var font = builder.BaseFont;
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if (lowerLimitBuilder is null && upperLimitBuilder is null)
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{
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var sumRun = CreateMathRun(font);
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sumRun.AppendChild(new MathText("∑"));
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currentContext.AppendChild(sumRun);
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var exprRun = CreateMathRun(font);
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currentContext.AppendChild(exprRun);
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builder.PushContext(exprRun);
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expressionBuilder(builder);
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builder.PopContext();
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}
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else
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{
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var sumWithLimits = new SubSuperscript();
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currentContext.AppendChild(sumWithLimits);
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var baseElem = new Base();
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var sumRun = CreateMathRun(font);
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sumRun.AppendChild(new MathText("∑"));
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baseElem.AppendChild(sumRun);
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sumWithLimits.AppendChild(baseElem);
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if (lowerLimitBuilder is not null)
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{
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var subArg = new SubArgument();
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sumWithLimits.AppendChild(subArg);
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builder.PushContext(subArg);
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lowerLimitBuilder(builder);
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builder.PopContext();
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}
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if (upperLimitBuilder is not null)
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{
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var superArg = new SuperArgument();
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sumWithLimits.AppendChild(superArg);
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builder.PushContext(superArg);
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upperLimitBuilder(builder);
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builder.PopContext();
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}
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var exprRun = CreateMathRun(font);
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currentContext.AppendChild(exprRun);
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builder.PushContext(exprRun);
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expressionBuilder(builder);
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builder.PopContext();
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}
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}
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/// <summary>Создаёт степень.</summary>
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public static Superscript CreateSuperscript(
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Action<IFormula> baseBuilder,
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Action<IFormula> supBuilder,
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IFormula builder)
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{
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var superscript = new Superscript();
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// Основание
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var baseElem = new Base();
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superscript.AppendChild(baseElem);
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builder.PushContext(baseElem);
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baseBuilder(builder);
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builder.PopContext();
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// Показатель
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var superArg = new SuperArgument();
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superscript.AppendChild(superArg);
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builder.PushContext(superArg);
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supBuilder(builder);
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builder.PopContext();
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return superscript;
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}
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/// <summary>Создаёт нижний индекс.</summary>
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public static Subscript CreateSubscript(
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Action<IFormula> baseBuilder,
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Action<IFormula> subBuilder,
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IFormula builder)
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{
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var subscript = new Subscript();
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var baseElem = new Base();
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subscript.AppendChild(baseElem);
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builder.PushContext(baseElem);
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baseBuilder(builder);
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builder.PopContext();
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var subArg = new SubArgument();
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subscript.AppendChild(subArg);
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builder.PushContext(subArg);
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subBuilder(builder);
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builder.PopContext();
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return subscript;
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}
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/// <summary>Создаёт одновременные нижний и верхний индексы.</summary>
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public static SubSuperscript CreateSubSuperscript(
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Action<IFormula> baseBuilder,
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Action<IFormula> subBuilder,
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Action<IFormula> supBuilder,
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IFormula builder)
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{
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var subSup = new SubSuperscript();
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var baseElem = new Base();
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subSup.AppendChild(baseElem);
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builder.PushContext(baseElem);
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baseBuilder(builder);
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builder.PopContext();
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var subArg = new SubArgument();
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subSup.AppendChild(subArg);
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builder.PushContext(subArg);
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subBuilder(builder);
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builder.PopContext();
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var superArg = new SuperArgument();
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subSup.AppendChild(superArg);
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builder.PushContext(superArg);
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supBuilder(builder);
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builder.PopContext();
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return subSup;
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}
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}
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