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