data/ComposeDocumentFormat.cpp
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|---|---|---|---|
| 1 | #include "ComposeDocumentFormat.h" | ||
| 2 | |||
| 3 | #include <QHash> | ||
| 4 | #include <QTextBlock> | ||
| 5 | #include <QTextCharFormat> | ||
| 6 | #include <QUrl> | ||
| 7 | #include <cmath> | ||
| 8 | |||
| 9 | namespace ComposeDocumentFormat { | ||
| 10 | |||
| 11 | 71 | const QList<FontFamily> &fontFamilies() { | |
| 12 | static const QList<FontFamily> families{ | ||
| 13 | 5 | {QStringLiteral("default"), QStringLiteral("Default"), QString(), QString()}, | |
| 14 | 5 | {QStringLiteral("sans"), QStringLiteral("Arial"), QStringLiteral("Arial"), | |
| 15 | 5 | QStringLiteral("Arial, Helvetica, sans-serif")}, | |
| 16 | 5 | {QStringLiteral("verdana"), QStringLiteral("Verdana"), QStringLiteral("Verdana"), | |
| 17 | 5 | QStringLiteral("Verdana, Geneva, sans-serif")}, | |
| 18 | 5 | {QStringLiteral("tahoma"), QStringLiteral("Tahoma"), QStringLiteral("Tahoma"), | |
| 19 | 5 | QStringLiteral("Tahoma, Verdana, sans-serif")}, | |
| 20 | 5 | {QStringLiteral("trebuchet"), QStringLiteral("Trebuchet MS"), QStringLiteral("Trebuchet MS"), | |
| 21 | 5 | QStringLiteral("'Trebuchet MS', Helvetica, sans-serif")}, | |
| 22 | 5 | {QStringLiteral("georgia"), QStringLiteral("Georgia"), QStringLiteral("Georgia"), | |
| 23 | 5 | QStringLiteral("Georgia, 'Times New Roman', serif")}, | |
| 24 | 5 | {QStringLiteral("times"), QStringLiteral("Times New Roman"), QStringLiteral("Times New Roman"), | |
| 25 | 5 | QStringLiteral("'Times New Roman', Times, serif")}, | |
| 26 | 5 | {QStringLiteral("mono"), QStringLiteral("Courier New"), QStringLiteral("Courier New"), | |
| 27 | 5 | QStringLiteral("'Courier New', Consolas, monospace")}, | |
| 28 |
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121 | }; |
| 29 | 71 | return families; | |
| 30 | 155 | } | |
| 31 | |||
| 32 | 11956 | const FontFamily *fontFamilyFor(const QString &familyOrKey) { | |
| 33 |
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11956 | if (familyOrKey.isEmpty()) return nullptr; |
| 34 |
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277 | for (const FontFamily &family : fontFamilies()) { |
| 35 |
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272 | if (family.key.isEmpty() || family.family.isEmpty()) continue; |
| 36 |
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389 | if (family.key.compare(familyOrKey, Qt::CaseInsensitive) == 0 || |
| 37 | 188 | family.family.compare(familyOrKey, Qt::CaseInsensitive) == 0) | |
| 38 | 66 | return &family; | |
| 39 | } | ||
| 40 | 5 | return nullptr; | |
| 41 | } | ||
| 42 | |||
| 43 | 15029 | QString mapForeignFontFamily(const QString &cssFamilies) { | |
| 44 | // The first family decides; the fallbacks after it are the sender's | ||
| 45 | // stack, not a choice. System and generic defaults mean "no family". | ||
| 46 |
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15029 | QString name = cssFamilies.section(QLatin1Char(','), 0, 0).trimmed(); |
| 47 |
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15029 | if (name.size() >= 2 && (name.startsWith(QLatin1Char('"')) || name.startsWith(QLatin1Char('\'')))) |
| 48 | ✗ | name = name.mid(1, name.size() - 2); | |
| 49 |
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15029 | const QString lower = name.toLower(); |
| 50 | static const QHash<QString, QString> families{ | ||
| 51 | 27 | {QStringLiteral("arial"), QStringLiteral("Arial")}, | |
| 52 | 27 | {QStringLiteral("helvetica"), QStringLiteral("Arial")}, | |
| 53 | 27 | {QStringLiteral("helvetica neue"), QStringLiteral("Arial")}, | |
| 54 | 27 | {QStringLiteral("calibri"), QStringLiteral("Arial")}, | |
| 55 | 27 | {QStringLiteral("aptos"), QStringLiteral("Arial")}, | |
| 56 | 27 | {QStringLiteral("liberation sans"), QStringLiteral("Arial")}, | |
| 57 | 27 | {QStringLiteral("verdana"), QStringLiteral("Verdana")}, | |
| 58 | 27 | {QStringLiteral("geneva"), QStringLiteral("Verdana")}, | |
| 59 | 27 | {QStringLiteral("tahoma"), QStringLiteral("Tahoma")}, | |
| 60 | 27 | {QStringLiteral("trebuchet ms"), QStringLiteral("Trebuchet MS")}, | |
| 61 | 27 | {QStringLiteral("trebuchet"), QStringLiteral("Trebuchet MS")}, | |
| 62 | 27 | {QStringLiteral("georgia"), QStringLiteral("Georgia")}, | |
| 63 | 27 | {QStringLiteral("cambria"), QStringLiteral("Georgia")}, | |
| 64 | 27 | {QStringLiteral("times new roman"), QStringLiteral("Times New Roman")}, | |
| 65 | 27 | {QStringLiteral("times"), QStringLiteral("Times New Roman")}, | |
| 66 | 27 | {QStringLiteral("liberation serif"), QStringLiteral("Times New Roman")}, | |
| 67 | 27 | {QStringLiteral("serif"), QStringLiteral("Times New Roman")}, | |
| 68 | 27 | {QStringLiteral("courier new"), QStringLiteral("Courier New")}, | |
| 69 | 27 | {QStringLiteral("courier"), QStringLiteral("Courier New")}, | |
| 70 | 27 | {QStringLiteral("consolas"), QStringLiteral("Courier New")}, | |
| 71 | 27 | {QStringLiteral("liberation mono"), QStringLiteral("Courier New")}, | |
| 72 | 27 | {QStringLiteral("monospace"), QStringLiteral("Courier New")}, | |
| 73 | 27 | {QStringLiteral("menlo"), QStringLiteral("Courier New")}, | |
| 74 |
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15281 | {QStringLiteral("monaco"), QStringLiteral("Courier New")}}; |
| 75 | 30058 | return families.value(lower); | |
| 76 | 15254 | } | |
| 77 | |||
| 78 | 43537 | int region(const QTextBlock &block) { | |
| 79 |
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43537 | return block.blockFormat().intProperty(RegionProperty); |
| 80 | } | ||
| 81 | |||
| 82 | 31049 | bool isCodeBlock(const QTextBlock &block) { | |
| 83 |
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31049 | return block.blockFormat().hasProperty(QTextFormat::BlockCodeFence); |
| 84 | } | ||
| 85 | |||
| 86 | 32886 | int quoteLevel(const QTextBlock &block) { | |
| 87 |
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32886 | return block.blockFormat().intProperty(QTextFormat::BlockQuoteLevel); |
| 88 | } | ||
| 89 | |||
| 90 | 6731 | bool isHorizontalRule(const QTextBlock &block) { | |
| 91 |
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6731 | return block.blockFormat().hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth); |
| 92 | } | ||
| 93 | |||
| 94 | 44231 | bool isInlineCode(const QTextCharFormat &format) { | |
| 95 | 44231 | return format.boolProperty(CodeProperty); | |
| 96 | } | ||
| 97 | |||
| 98 | 49 | static double luminance(const QColor &color) { | |
| 99 | 147 | const auto channel = [](double value) { | |
| 100 | 147 | value /= 255.0; | |
| 101 |
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147 | return value <= 0.03928 ? value / 12.92 : std::pow((value + 0.055) / 1.055, 2.4); |
| 102 | }; | ||
| 103 | 49 | const QColor rgb = color.toRgb(); | |
| 104 | 49 | return 0.2126 * channel(rgb.red()) + 0.7152 * channel(rgb.green()) + 0.0722 * channel(rgb.blue()); | |
| 105 | } | ||
| 106 | |||
| 107 | // Grey-ish: no hue a reader would notice (HSL saturation below 15 %). | ||
| 108 | 21 | static bool greyish(const QColor &color) { | |
| 109 |
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26 | return color.toHsl().hslSaturationF() < 0.15 || color.toHsl().lightnessF() < 0.08 || |
| 110 |
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26 | color.toHsl().lightnessF() > 0.97; |
| 111 | } | ||
| 112 | |||
| 113 | 36 | bool isDefaultLikeTextColor(const QColor &color) { | |
| 114 |
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36 | return color.isValid() && luminance(color) < 0.03 && greyish(color); // black … #2e2e2e |
| 115 | } | ||
| 116 | |||
| 117 | 13 | bool isDefaultLikeBackground(const QColor &color) { | |
| 118 |
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13 | return color.isValid() && (color.alpha() == 0 || (luminance(color) > 0.85 && greyish(color))); // white … #f0f0f0 |
| 119 | } | ||
| 120 | |||
| 121 | 57 | QString cssColor(const QColor &color) { | |
| 122 |
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57 | return color.toRgb().name(QColor::HexRgb).toLower(); |
| 123 | } | ||
| 124 | |||
| 125 | 4874 | bool isAllowedLink(const QString &href) { | |
| 126 |
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4874 | const QUrl url(href, QUrl::StrictMode); |
| 127 |
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4874 | if (!url.isValid() || href.size() > 2048) return false; |
| 128 |
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4874 | const QString scheme = url.scheme().toLower(); |
| 129 |
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4890 | if (scheme == QLatin1String("mailto")) return !url.path().isEmpty(); |
| 130 |
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9709 | return (scheme == QLatin1String("http") || scheme == QLatin1String("https")) && !url.host().isEmpty(); |
| 131 | 4874 | } | |
| 132 | |||
| 133 | } // namespace ComposeDocumentFormat | ||
| 134 |