111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
// Copyright 2018 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "DolphinQt/Config/GameConfigHighlighter.h"
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#include <QBrush>
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#include <QColor>
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#include <QRegularExpression>
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#include <QTextBlock>
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#include <QTextCharFormat>
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#include <QTextDocument>
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#include "DolphinQt/Settings.h"
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struct HighlightingRule
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{
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QRegularExpression pattern;
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QTextCharFormat format;
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};
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GameConfigHighlighter::~GameConfigHighlighter() = default;
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GameConfigHighlighter::GameConfigHighlighter(QTextDocument* parent) : QObject(parent)
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{
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const bool is_dark_theme = Settings::Instance().IsThemeDark();
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QTextCharFormat equal_format;
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if (is_dark_theme)
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equal_format.setForeground(QBrush{QColor(255, 96, 96)});
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else
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equal_format.setForeground(Qt::red);
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QTextCharFormat section_format;
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section_format.setFontWeight(QFont::Bold);
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QTextCharFormat comment_format;
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if (is_dark_theme)
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comment_format.setForeground(QBrush{QColor(0, 220, 0)});
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else
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comment_format.setForeground(Qt::darkGreen);
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comment_format.setFontItalic(true);
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QTextCharFormat const_format;
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const_format.setFontWeight(QFont::Bold);
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if (is_dark_theme)
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const_format.setForeground(QBrush{QColor(132, 132, 255)});
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else
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const_format.setForeground(Qt::blue);
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QTextCharFormat num_format;
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if (is_dark_theme)
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num_format.setForeground(QBrush{QColor(66, 138, 255)});
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else
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num_format.setForeground(Qt::darkBlue);
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m_rules.emplace_back(HighlightingRule{QRegularExpression(QStringLiteral("=")), equal_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("^\\[.*?\\]")), section_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("\\bTrue\\b")), const_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("\\bFalse\\b")), const_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("\\b[0-9a-fA-F]+\\b")), num_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("^#.*")), comment_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("^\\$.*")), comment_format});
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m_rules.emplace_back(
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HighlightingRule{QRegularExpression(QStringLiteral("^\\*.*")), comment_format});
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// Highlight block on change.
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// We're manually highlighting blocks because QSyntaxHighlighter
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// hangs with large (>2MB) files for some reason.
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connect(parent, &QTextDocument::contentsChange, this,
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[this, parent](int pos, int removed [[maybe_unused]], int added) {
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QTextBlock block = parent->findBlock(pos);
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const auto pos_end = pos + added;
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while (block.isValid() && block.position() <= pos_end)
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{
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HighlightBlock(block);
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block = block.next();
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}
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});
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// Highlight all blocks right now.
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for (QTextBlock block = parent->begin(); block.isValid(); block = block.next())
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HighlightBlock(block);
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}
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void GameConfigHighlighter::HighlightBlock(const QTextBlock& block)
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{
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QList<QTextLayout::FormatRange> format_ranges;
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for (const auto& rule : m_rules)
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{
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auto it = rule.pattern.globalMatch(block.text());
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while (it.hasNext())
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{
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const auto match = it.next();
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format_ranges.emplace_back(QTextLayout::FormatRange{.start = int(match.capturedStart()),
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.length = int(match.capturedLength()),
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.format = rule.format});
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}
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}
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block.layout()->clearFormats();
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block.layout()->setFormats(format_ranges);
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}
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