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e1bece6378b9794c9f71ca3d76b4770fbb722e28
VoiletMark/src/ThemeManager.cpp
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liyepan e1bece6378 feat: v0.2.0 —— 文件夹侧栏、源代码模式、按时段主题与格式快捷键 
主题
- 新增「按时段自动」模式：6:00–18:00 浅色，其余时间深色
- 主题菜单改为四种模式，默认仍为跟随系统

侧栏
- 左侧文件夹侧栏（Ctrl+B 开关），递归扫描 *.md / *.markdown / *.mdown / *.mkd
- 文件 → 打开文件夹…（Ctrl+Shift+O），记住上次打开的目录
- 点击文件名即打开，当前文件在列表中高亮，支持手动刷新

编辑
- 左下角 <src> 按钮 / Ctrl+Shift+M 切换源代码模式（关高亮、行号、当前行）
- Ctrl+1~6 设置标题级别，再按一次取消
- Ctrl+/ 把选中内容包成围栏代码块，再按一次拆掉（含光标在块内的情况）

其他
- 模板回归脚本验证了标题与代码块的文本变换
- README 与截图更新
2026-10-22 17:20:17 +08:00

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#include "ThemeManager.h"
#include <QApplication>
#include <QDateTime>
#include <QDir>
#include <QFile>
#include <QGuiApplication>
#include <QPalette>
#include <QProcess>
#include <QSettings>
#include <QStandardPaths>
#include <QTime>
#include <QTimer>
#include <QXmlStreamReader>
namespace {
QString runCommand(const QString &program, const QStringList &arguments, int timeoutMs)
{
QProcess process;
process.start(program, arguments);
if (!process.waitForFinished(timeoutMs)) {
process.kill();
process.waitForFinished(200);
return QString();
}
if (process.exitStatus() != QProcess::NormalExit || process.exitCode() != 0)
return QString();
return QString::fromUtf8(process.readAllStandardOutput()).trimmed();
}
bool looksDark(const QString &themeName)
{
return themeName.contains(QLatin1String("dark"), Qt::CaseInsensitive);
}
/// XFCE 把界面主题记录在 xfconf 的 xsettings.xml 里。
QString xfceThemeName()
{
QFile file(QDir::homePath() + QStringLiteral("/.config/xfce4/xfconf/xfce-perchannel-xml/xsettings.xml"));
if (!file.open(QIODevice::ReadOnly))
return QString();
QXmlStreamReader xml(&file);
while (!xml.atEnd()) {
xml.readNext();
if (!xml.isStartElement() || xml.name().toString() != QLatin1String("property"))
continue;
const QXmlStreamAttributes attributes = xml.attributes();
if (attributes.value(QLatin1String("name")).toString() == QLatin1String("ThemeName"))
return attributes.value(QLatin1String("value")).toString();
}
return QString();
}
QColor hex(const char *value)
{
return QColor(QString::fromLatin1(value));
}
ThemeColors lightColors()
{
ThemeColors c;
c.window = hex("#f2f3f5");
c.windowText = hex("#1f2328");
c.base = hex("#ffffff");
c.alternateBase = hex("#f6f7f9");
c.text = hex("#1f2328");
c.button = hex("#ffffff");
c.buttonText = hex("#1f2328");
c.border = hex("#dcdfe4");
c.accent = hex("#0969da");
c.highlight = hex("#cfe3ff");
c.highlightedText = hex("#0b1f38");
c.disabled = hex("#9aa2ab");
c.placeholder = hex("#6b7480");
c.menuBackground = hex("#ffffff");
c.scrollHandle = hex("#c9ced6");
c.scrollHandleHover = hex("#aeb5bf");
c.sidebarBackground = hex("#f8f9fb");
c.hoverBackground = hex("#eaedf1");
c.editorBase = hex("#ffffff");
c.editorText = hex("#24292f");
c.gutterBackground = hex("#fafbfc");
c.gutterText = hex("#b0b7c0");
c.gutterActiveText = hex("#5c6670");
c.currentLine = hex("#f4f6f9");
c.heading = hex("#0a52a3");
c.headingMarker = hex("#b3b9c2");
c.strong = hex("#11151a");
c.emphasis = hex("#4b535c");
c.code = hex("#b4295a");
c.codeBackground = hex("#f2f4f7");
c.link = hex("#0969da");
c.linkUrl = hex("#6b7480");
c.quote = hex("#6b7480");
c.quoteMarker = hex("#c3c9d2");
c.listMarker = hex("#0969da");
c.rule = hex("#d6dae0");
c.taskDone = hex("#1a7f37");
return c;
}
ThemeColors darkColors()
{
ThemeColors c;
c.window = hex("#1b1d21");
c.windowText = hex("#d6d9dd");
c.base = hex("#1e2024");
c.alternateBase = hex("#23262b");
c.text = hex("#d6d9dd");
c.button = hex("#26292f");
c.buttonText = hex("#d6d9dd");
c.border = hex("#2d3137");
c.accent = hex("#3b8eea");
c.highlight = hex("#26466b");
c.highlightedText = hex("#eef3f8");
c.disabled = hex("#5d646d");
c.placeholder = hex("#8b939d");
c.menuBackground = hex("#242730");
c.scrollHandle = hex("#3a3f47");
c.scrollHandleHover = hex("#4d535d");
c.sidebarBackground = hex("#1a1c20");
c.hoverBackground = hex("#272b31");
c.editorBase = hex("#1e2024");
c.editorText = hex("#d7dade");
c.gutterBackground = hex("#1a1c20");
c.gutterText = hex("#4f565f");
c.gutterActiveText = hex("#aeb5bf");
c.currentLine = hex("#23262c");
c.heading = hex("#79b8ff");
c.headingMarker = hex("#5d6570");
c.strong = hex("#f2f4f7");
c.emphasis = hex("#c3c9d1");
c.code = hex("#ff8fbf");
c.codeBackground = hex("#292c33");
c.link = hex("#62a8ff");
c.linkUrl = hex("#7f8791");
c.quote = hex("#8b939d");
c.quoteMarker = hex("#4f565f");
c.listMarker = hex("#62a8ff");
c.rule = hex("#33373e");
c.taskDone = hex("#5fbf7f");
return c;
}
} // namespace
ThemeManager *ThemeManager::instance()
{
static ThemeManager *manager = new ThemeManager();
return manager;
}
ThemeManager::ThemeManager(QObject *parent)
: QObject(parent)
{
if (qApp) {
const QColor window = qApp->palette().color(QPalette::Window);
m_paletteGuess = window.lightness() < 128 ? Scheme::Dark : Scheme::Light;
}
m_pollTimer = new QTimer(this);
m_pollTimer->setInterval(2000);
connect(m_pollTimer, &QTimer::timeout, this, &ThemeManager::pollSystemTheme);
}
void ThemeManager::initialize(Mode forcedMode, bool persist)
{
if (forcedMode != Mode::System) {
setMode(forcedMode, persist);
} else {
const QString saved = QSettings().value(QStringLiteral("theme/mode")).toString();
m_mode = modeFromString(saved, nullptr);
applyScheme(schemeForMode(m_mode), true);
}
m_pollTimer->start();
}
void ThemeManager::setMode(Mode mode, bool persist)
{
m_mode = mode;
if (persist)
QSettings().setValue(QStringLiteral("theme/mode"), modeToString(mode));
applyScheme(schemeForMode(m_mode), true);
}
void ThemeManager::pollSystemTheme()
{
if (m_mode == Mode::Light || m_mode == Mode::Dark)
return;
// 跟随系统：读桌面设置；按时段：到 6:00 / 18:00 自动翻转。
const Scheme target = schemeForMode(m_mode);
if (target != m_scheme)
applyScheme(target, false);
}
ThemeManager::Scheme ThemeManager::schemeForMode(Mode mode) const
{
switch (mode) {
case Mode::Light: return Scheme::Light;
case Mode::Dark: return Scheme::Dark;
case Mode::Schedule: return scheduleScheme();
case Mode::System: break;
}
return detectSystemScheme();
}
ThemeManager::Scheme ThemeManager::scheduleScheme() const
{
const int hour = QTime::currentTime().hour();
return (hour >= 6 && hour < 18) ? Scheme::Light : Scheme::Dark;
}
void ThemeManager::applyScheme(Scheme scheme, bool force)
{
const bool changed = (scheme != m_scheme) || force;
m_scheme = scheme;
buildColors(m_scheme);
applyToApplication();
if (changed)
emit schemeChanged(m_scheme);
}
void ThemeManager::buildColors(Scheme scheme)
{
m_colors = (scheme == Scheme::Dark) ? darkColors() : lightColors();
}
void ThemeManager::applyToApplication()
{
QPalette palette;
palette.setColor(QPalette::Window, m_colors.window);
palette.setColor(QPalette::WindowText, m_colors.windowText);
palette.setColor(QPalette::Base, m_colors.base);
palette.setColor(QPalette::AlternateBase, m_colors.alternateBase);
palette.setColor(QPalette::Text, m_colors.text);
palette.setColor(QPalette::Button, m_colors.button);
palette.setColor(QPalette::ButtonText, m_colors.buttonText);
palette.setColor(QPalette::BrightText, Qt::white);
palette.setColor(QPalette::Highlight, m_colors.highlight);
palette.setColor(QPalette::HighlightedText, m_colors.highlightedText);
palette.setColor(QPalette::ToolTipBase, m_colors.menuBackground);
palette.setColor(QPalette::ToolTipText, m_colors.text);
palette.setColor(QPalette::PlaceholderText, m_colors.placeholder);
palette.setColor(QPalette::Link, m_colors.link);
palette.setColor(QPalette::LinkVisited, m_colors.link);
palette.setColor(QPalette::Disabled, QPalette::WindowText, m_colors.disabled);
palette.setColor(QPalette::Disabled, QPalette::Text, m_colors.disabled);
palette.setColor(QPalette::Disabled, QPalette::ButtonText, m_colors.disabled);
palette.setColor(QPalette::Disabled, QPalette::HighlightedText, m_colors.disabled);
qApp->setPalette(palette);
qApp->setStyleSheet(styleSheet());
}
QString ThemeManager::styleSheet() const
{
QString qss = QString::fromLatin1(R"(
QMainWindow, QDialog { background-color: @window; }
QMenuBar { background-color: @window; color: @windowText; border-bottom: 1px solid @border; }
QMenuBar::item { background: transparent; padding: 5px 10px; border-radius: 5px; }
QMenuBar::item:selected { background-color: @highlight; color: @highlightedText; }
QMenu { background-color: @menuBackground; color: @text; border: 1px solid @border; padding: 5px; }
QMenu::item { padding: 6px 28px 6px 22px; border-radius: 5px; }
QMenu::item:selected { background-color: @highlight; color: @highlightedText; }
QMenu::item:disabled { color: @disabled; }
QMenu::separator { height: 1px; background-color: @border; margin: 5px 8px; }
QStatusBar { background-color: @window; color: @placeholder; border-top: 1px solid @border; }
QStatusBar::item { border: none; }
QPlainTextEdit { background-color: @editorBase; color: @editorText; border: none;
selection-background-color: @highlight; selection-color: @highlightedText; }
QScrollBar:vertical { background: transparent; width: 11px; margin: 0; }
QScrollBar::handle:vertical { background-color: @scrollHandle; border-radius: 4px;
min-height: 28px; margin: 2px 2px; }
QScrollBar::handle:vertical:hover { background-color: @scrollHandleHover; }
QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical { height: 0; }
QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical { background: transparent; }
QScrollBar:horizontal { background: transparent; height: 11px; margin: 0; }
QScrollBar::handle:horizontal { background-color: @scrollHandle; border-radius: 4px;
min-width: 28px; margin: 2px 2px; }
QScrollBar::handle:horizontal:hover { background-color: @scrollHandleHover; }
QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal { width: 0; }
QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal { background: transparent; }
QPushButton { background-color: @button; color: @buttonText; border: 1px solid @border;
border-radius: 6px; padding: 5px 16px; min-width: 68px; }
QPushButton:hover { background-color: @highlight; color: @highlightedText; }
QPushButton:default { background-color: @accent; color: #ffffff; border-color: @accent; }
QToolTip { background-color: @menuBackground; color: @text; border: 1px solid @border; padding: 4px; }
QToolButton { border: none; border-radius: 5px; padding: 3px 8px; color: @text; background: transparent; }
QToolButton:hover { background-color: @hoverBackground; }
QToolButton:checked { background-color: @highlight; color: @highlightedText; }
QDockWidget { color: @text; }
QDockWidget::title { background-color: @window; padding: 6px 8px; }
QListWidget { background-color: @sidebarBackground; border: 1px solid @border; border-radius: 6px;
padding: 3px; outline: 0; }
QListWidget::item { padding: 4px 6px; border-radius: 4px; }
QListWidget::item:hover { background-color: @hoverBackground; }
QListWidget::item:selected { background-color: @highlight; color: @highlightedText; }
)");
// 先替换长 token，避免 @window 吃掉 @windowText 这类前缀冲突。
qss.replace(QLatin1String("@scrollHandleHover"), m_colors.scrollHandleHover.name());
qss.replace(QLatin1String("@highlightedText"), m_colors.highlightedText.name());
qss.replace(QLatin1String("@buttonText"), m_colors.buttonText.name());
qss.replace(QLatin1String("@windowText"), m_colors.windowText.name());
qss.replace(QLatin1String("@editorText"), m_colors.editorText.name());
qss.replace(QLatin1String("@menuBackground"), m_colors.menuBackground.name());
qss.replace(QLatin1String("@scrollHandle"), m_colors.scrollHandle.name());
qss.replace(QLatin1String("@editorBase"), m_colors.editorBase.name());
qss.replace(QLatin1String("@placeholder"), m_colors.placeholder.name());
qss.replace(QLatin1String("@disabled"), m_colors.disabled.name());
qss.replace(QLatin1String("@border"), m_colors.border.name());
qss.replace(QLatin1String("@hoverBackground"), m_colors.hoverBackground.name());
qss.replace(QLatin1String("@sidebarBackground"), m_colors.sidebarBackground.name());
qss.replace(QLatin1String("@accent"), m_colors.accent.name());
qss.replace(QLatin1String("@highlight"), m_colors.highlight.name());
qss.replace(QLatin1String("@button"), m_colors.button.name());
qss.replace(QLatin1String("@window"), m_colors.window.name());
qss.replace(QLatin1String("@text"), m_colors.text.name());
return qss;
}
QString ThemeManager::modeToString(Mode mode)
{
switch (mode) {
case Mode::Light: return QStringLiteral("light");
case Mode::Dark: return QStringLiteral("dark");
case Mode::Schedule: return QStringLiteral("schedule");
case Mode::System: break;
}
return QStringLiteral("system");
}
ThemeManager::Mode ThemeManager::modeFromString(const QString &value, bool *ok)
{
const QString normalized = value.trimmed().toLower();
if (normalized == QLatin1String("light")) { if (ok) *ok = true; return Mode::Light; }
if (normalized == QLatin1String("dark")) { if (ok) *ok = true; return Mode::Dark; }
if (normalized == QLatin1String("schedule")) { if (ok) *ok = true; return Mode::Schedule; }
if (ok) *ok = (normalized == QLatin1String("system") || normalized.isEmpty());
return Mode::System;
}
QString ThemeManager::modeLabel(Mode mode)
{
switch (mode) {
case Mode::Light: return QObject::tr("浅色");
case Mode::Dark: return QObject::tr("深色");
case Mode::Schedule: return QObject::tr("按时段自动");
case Mode::System: break;
}
return QObject::tr("跟随系统");
}
ThemeManager::Scheme ThemeManager::detectSystemScheme() const
{
// 1) 显式覆盖：打包、测试或用户强制指定时使用。
const QString override = qEnvironmentVariable("VOILETMARK_THEME").trimmed().toLower();
if (override == QLatin1String("dark"))
return Scheme::Dark;
if (override == QLatin1String("light"))
return Scheme::Light;
#if defined(Q_OS_WIN)
QSettings registry(
QStringLiteral("HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize"),
QSettings::NativeFormat);
const QVariant appsUseLight = registry.value(QStringLiteral("AppsUseLightTheme"));
if (appsUseLight.isValid())
return appsUseLight.toInt() == 0 ? Scheme::Dark : Scheme::Light;
return m_paletteGuess;
#elif defined(Q_OS_MACOS)
const QString style = runCommand(QStringLiteral("defaults"),
{QStringLiteral("read"), QStringLiteral("-g"),
QStringLiteral("AppleInterfaceStyle")},
500);
return style.compare(QLatin1String("Dark"), Qt::CaseInsensitive) == 0 ? Scheme::Dark : Scheme::Light;
#else
// 2) gsettings 需要启动子进程，做 3 秒缓存；找不到命令就整段跳过。
static const QString gsettings = QStandardPaths::findExecutable(QStringLiteral("gsettings"));
const qint64 now = QDateTime::currentMSecsSinceEpoch();
if (!gsettings.isEmpty()
&& (now - m_lastGsettingsCheck > 3000 || m_cachedColorScheme.isEmpty())) {
m_cachedColorScheme = runCommand(gsettings,
{QStringLiteral("get"),
QStringLiteral("org.gnome.desktop.interface"),
QStringLiteral("color-scheme")},
500);
m_cachedGtkTheme = runCommand(gsettings,
{QStringLiteral("get"),
QStringLiteral("org.gnome.desktop.interface"),
QStringLiteral("gtk-theme")},
500);
m_lastGsettingsCheck = now;
}
const QString colorScheme = m_cachedColorScheme.toLower();
if (colorScheme.contains(QLatin1String("prefer-dark")))
return Scheme::Dark;
if (colorScheme.contains(QLatin1String("prefer-light")))
return Scheme::Light;
// 3) KDE 全局配色。
QSettings kdeGlobals(QDir::homePath() + QStringLiteral("/.config/kdeglobals"),
QSettings::IniFormat);
const QString kdeScheme = kdeGlobals.value(QStringLiteral("General/ColorScheme")).toString();
if (!kdeScheme.isEmpty())
return looksDark(kdeScheme) ? Scheme::Dark : Scheme::Light;
// 4) GTK 主题名。
if (!m_cachedGtkTheme.isEmpty())
return looksDark(m_cachedGtkTheme) ? Scheme::Dark : Scheme::Light;
// 5) XFCE 主题名。
const QString xfceName = xfceThemeName();
if (!xfceName.isEmpty())
return looksDark(xfceName) ? Scheme::Dark : Scheme::Light;
// 6) 兜底。
return m_paletteGuess;
#endif
}
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