198c884b85
We have mechanisms to clear the cache as the current theme changes and it only makes us access the disk repeatedly for no reason.
462 lines
12 KiB
C++
462 lines
12 KiB
C++
/*
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SPDX-FileCopyrightText: 2006-2007 Aaron Seigo <aseigo@kde.org>
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SPDX-License-Identifier: LGPL-2.0-or-later
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*/
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#include "theme.h"
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#include "private/svg_p.h"
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#include "private/theme_p.h"
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#include <QFile>
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#include <QFileInfo>
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#include <QFontDatabase>
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#include <QFontMetrics>
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#include <QMutableListIterator>
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#include <QPair>
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#include <QStringBuilder>
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#include <QThread>
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#include <QTimer>
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#include "config-plasma.h"
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#include <KColorScheme>
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#include <KConfigGroup>
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#include <KDirWatch>
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#include <KImageCache>
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#include <KWindowEffects>
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#include <KWindowSystem>
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#include <QDebug>
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#include <QStandardPaths>
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#include "debug_p.h"
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namespace Plasma
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{
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Theme::Theme(QObject *parent)
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: QObject(parent)
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{
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if (!ThemePrivate::globalTheme) {
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ThemePrivate::globalTheme = new ThemePrivate;
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ThemePrivate::globalTheme->settingsChanged(false);
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}
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ThemePrivate::globalTheme->ref.ref();
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d = ThemePrivate::globalTheme;
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if (QCoreApplication::instance()) {
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connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, d, &ThemePrivate::onAppExitCleanup);
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}
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connect(d, &ThemePrivate::themeChanged, this, &Theme::themeChanged);
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connect(d, &ThemePrivate::defaultFontChanged, this, &Theme::defaultFontChanged);
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connect(d, &ThemePrivate::smallestFontChanged, this, &Theme::smallestFontChanged);
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}
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Theme::Theme(const QString &themeName, QObject *parent)
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: QObject(parent)
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{
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auto &priv = ThemePrivate::themes[themeName];
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if (!priv) {
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priv = new ThemePrivate;
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}
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priv->ref.ref();
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d = priv;
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// turn off caching so we don't accidentally trigger unnecessary disk activity at this point
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bool useCache = d->cacheTheme;
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d->cacheTheme = false;
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d->setThemeName(themeName, false, false);
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d->cacheTheme = useCache;
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d->fixedName = true;
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if (QCoreApplication::instance()) {
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connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, d, &ThemePrivate::onAppExitCleanup);
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}
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connect(d, &ThemePrivate::themeChanged, this, &Theme::themeChanged);
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}
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Theme::~Theme()
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{
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if (d == ThemePrivate::globalTheme) {
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if (!d->ref.deref()) {
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disconnect(ThemePrivate::globalTheme, nullptr, this, nullptr);
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delete ThemePrivate::globalTheme;
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ThemePrivate::globalTheme = nullptr;
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d = nullptr;
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}
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} else {
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if (!d->ref.deref()) {
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delete ThemePrivate::themes.take(d->themeName);
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}
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}
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}
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void Theme::setThemeName(const QString &themeName)
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{
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if (d->themeName == themeName) {
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return;
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}
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if (d != ThemePrivate::globalTheme) {
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disconnect(QCoreApplication::instance(), nullptr, d, nullptr);
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if (!d->ref.deref()) {
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delete ThemePrivate::themes.take(d->themeName);
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}
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auto &priv = ThemePrivate::themes[themeName];
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if (!priv) {
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priv = new ThemePrivate;
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}
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priv->ref.ref();
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d = priv;
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if (QCoreApplication::instance()) {
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connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, d, &ThemePrivate::onAppExitCleanup);
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}
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connect(d, &ThemePrivate::themeChanged, this, &Theme::themeChanged);
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}
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d->setThemeName(themeName, true, true);
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}
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QString Theme::themeName() const
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{
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return d->themeName;
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}
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QString Theme::imagePath(const QString &name) const
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{
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// look for a compressed svg file in the theme
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if (name.contains(QLatin1String("../")) || name.isEmpty()) {
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// we don't support relative paths
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// qCDebug(LOG_PLASMA) << "Theme says: bad image path " << name;
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return QString();
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}
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const QString svgzName = name % QLatin1String(".svgz");
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QString path = d->findInTheme(svgzName, d->themeName);
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if (path.isEmpty()) {
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// try for an uncompressed svg file
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const QString svgName = name % QLatin1String(".svg");
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path = d->findInTheme(svgName, d->themeName);
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// search in fallback themes if necessary
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for (int i = 0; path.isEmpty() && i < d->fallbackThemes.count(); ++i) {
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if (d->themeName == d->fallbackThemes[i]) {
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continue;
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}
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// try a compressed svg file in the fallback theme
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path = d->findInTheme(svgzName, d->fallbackThemes[i]);
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if (path.isEmpty()) {
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// try an uncompressed svg file in the fallback theme
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path = d->findInTheme(svgName, d->fallbackThemes[i]);
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}
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}
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}
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/*
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if (path.isEmpty()) {
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#ifndef NDEBUG
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// qCDebug(LOG_PLASMA) << "Theme says: bad image path " << name;
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#endif
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}
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*/
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return path;
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}
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QString Theme::backgroundPath(const QString &image) const
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{
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return d->imagePath(themeName(), QStringLiteral("/appbackgrounds/"), image);
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}
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QString Theme::styleSheet(const QString &css) const
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{
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return d->processStyleSheet(css, Svg::Status::Normal);
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}
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QPalette Theme::palette() const
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{
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return d->palette;
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}
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QString Theme::wallpaperPath(const QSize &size) const
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{
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QString fullPath;
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QString image = d->defaultWallpaperTheme + QStringLiteral("/contents/images/%1x%2") + d->defaultWallpaperSuffix;
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QString defaultImage = image.arg(d->defaultWallpaperWidth).arg(d->defaultWallpaperHeight);
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if (size.isValid()) {
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// try to customize the paper to the size requested
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// TODO: this should do better than just fallback to the default size.
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// a "best fit" matching would be far better, so we don't end
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// up returning a 1920x1200 wallpaper for a 640x480 request ;)
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image = image.arg(size.width()).arg(size.height());
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} else {
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image = defaultImage;
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}
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// TODO: the theme's wallpaper overrides regularly installed wallpapers.
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// should it be possible for user installed (e.g. locateLocal) wallpapers
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// to override the theme?
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if (d->hasWallpapers) {
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// check in the theme first
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fullPath = d->findInTheme(QLatin1String("wallpapers/") % image, d->themeName);
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if (fullPath.isEmpty()) {
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fullPath = d->findInTheme(QLatin1String("wallpapers/") % defaultImage, d->themeName);
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}
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}
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if (fullPath.isEmpty()) {
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// we failed to find it in the theme, so look in the standard directories
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// qCDebug(LOG_PLASMA) << "looking for" << image;
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fullPath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("wallpapers/") + image);
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}
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if (fullPath.isEmpty()) {
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// we still failed to find it in the theme, so look for the default in
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// the standard directories
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// qCDebug(LOG_PLASMA) << "looking for" << defaultImage;
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fullPath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("wallpapers/") + defaultImage);
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if (fullPath.isEmpty()) {
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#ifndef NDEBUG
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// qCDebug(LOG_PLASMA) << "exhausted every effort to find a wallpaper.";
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#endif
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}
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}
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return fullPath;
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}
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QString Theme::wallpaperPathForSize(int width, int height) const
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{
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return Plasma::Theme::wallpaperPath(QSize(width, height));
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}
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bool Theme::currentThemeHasImage(const QString &name) const
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{
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if (name.contains(QLatin1String("../"))) {
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// we don't support relative paths
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return false;
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}
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return !d->findInTheme(name % QLatin1String(".svgz"), d->themeName).isEmpty() || !d->findInTheme(name % QLatin1String(".svg"), d->themeName).isEmpty();
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}
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KSharedConfigPtr Theme::colorScheme() const
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{
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return d->colors;
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}
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QColor Theme::color(ColorRole role, ColorGroup group) const
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{
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return d->color(role, group);
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}
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void Theme::setUseGlobalSettings(bool useGlobal)
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{
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if (d->useGlobal == useGlobal) {
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return;
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}
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d->useGlobal = useGlobal;
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d->cfg = KConfigGroup();
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d->themeName.clear();
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d->settingsChanged(true);
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}
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bool Theme::useGlobalSettings() const
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{
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return d->useGlobal;
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}
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bool Theme::findInCache(const QString &key, QPixmap &pix, unsigned int lastModified)
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{
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// TODO KF6: Make lastModified non-optional.
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if (lastModified == 0) {
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qCWarning(LOG_PLASMA) << "findInCache with a lastModified timestamp of 0 is deprecated";
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return false;
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}
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if (!d->useCache()) {
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return false;
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}
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if (lastModified > uint(d->pixmapCache->lastModifiedTime().toSecsSinceEpoch())) {
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return false;
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}
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const QString id = d->keysToCache.value(key);
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const auto it = d->pixmapsToCache.constFind(id);
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if (it != d->pixmapsToCache.constEnd()) {
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pix = *it;
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return !pix.isNull();
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}
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QPixmap temp;
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if (d->pixmapCache->findPixmap(key, &temp) && !temp.isNull()) {
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pix = temp;
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return true;
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}
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return false;
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}
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void Theme::insertIntoCache(const QString &key, const QPixmap &pix)
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{
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if (d->useCache()) {
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d->pixmapCache->insertPixmap(key, pix);
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}
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}
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void Theme::insertIntoCache(const QString &key, const QPixmap &pix, const QString &id)
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{
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if (d->useCache()) {
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d->pixmapsToCache[id] = pix;
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d->keysToCache[key] = id;
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d->idsToCache[id] = key;
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// always start timer in d->pixmapSaveTimer's thread
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QMetaObject::invokeMethod(d->pixmapSaveTimer, "start", Qt::QueuedConnection);
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}
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}
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#if PLASMA_BUILD_DEPRECATED_SINCE(5, 78)
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bool Theme::findInRectsCache(const QString &image, const QString &element, QRectF &rect) const
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{
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if (!d->useCache()) {
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return false;
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}
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bool ok = false;
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uint id = element.toLong(&ok);
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if (!ok) {
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return false;
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}
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return SvgRectsCache::instance()->findElementRect(id, image, rect);
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}
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QStringList Theme::listCachedRectKeys(const QString &image) const
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{
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if (!d->useCache()) {
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return QStringList();
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}
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return SvgRectsCache::instance()->cachedKeysForPath(image);
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}
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void Theme::insertIntoRectsCache(const QString &image, const QString &element, const QRectF &rect)
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{
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if (!d->useCache()) {
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return;
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}
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bool ok = false;
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uint id = element.toLong(&ok);
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if (!ok) {
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return;
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}
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uint secs = QDateTime::currentSecsSinceEpoch();
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SvgRectsCache::instance()->insert(id, image, rect, secs);
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}
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void Theme::invalidateRectsCache(const QString &image)
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{
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SvgRectsCache::instance()->dropImageFromCache(image);
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}
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void Theme::releaseRectsCache(const QString &image)
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{
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Q_UNUSED(image);
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// No op: the internal svg cache always writes the invalid elements in the proper place
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}
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#endif
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void Theme::setCacheLimit(int kbytes)
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{
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d->cacheSize = kbytes;
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delete d->pixmapCache;
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d->pixmapCache = nullptr;
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}
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#if PLASMA_BUILD_DEPRECATED_SINCE(5, 67)
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KPluginInfo Theme::pluginInfo() const
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{
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return KPluginInfo(d->pluginMetaData);
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}
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#endif
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QFont Theme::defaultFont() const
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{
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return QGuiApplication::font();
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}
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QFont Theme::smallestFont() const
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{
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return QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont);
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}
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QSizeF Theme::mSize(const QFont &font) const
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{
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return QFontMetrics(font).boundingRect(QStringLiteral("M")).size();
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}
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bool Theme::backgroundContrastEnabled() const
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{
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return d->backgroundContrastEnabled;
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}
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bool Theme::adaptiveTransparencyEnabled() const
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{
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return d->adaptiveTransparencyEnabled;
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}
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qreal Theme::backgroundContrast() const
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{
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if (qIsNaN(d->backgroundContrast)) {
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// Make up sensible default values, based on the background color
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// If we're using a dark background color, darken the background
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if (qGray(color(Plasma::Theme::BackgroundColor).rgb()) < 127) {
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return 0.45;
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// for a light theme lighten up the background
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} else {
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return 0.3;
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}
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}
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return d->backgroundContrast;
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}
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qreal Theme::backgroundIntensity() const
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{
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if (qIsNaN(d->backgroundIntensity)) {
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if (qGray(color(Plasma::Theme::BackgroundColor).rgb()) < 127) {
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return 0.45;
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} else {
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return 1.9;
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}
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}
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return d->backgroundIntensity;
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}
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qreal Theme::backgroundSaturation() const
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{
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if (qIsNaN(d->backgroundSaturation)) {
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return 1.7;
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}
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return d->backgroundSaturation;
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}
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bool Theme::blurBehindEnabled() const
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{
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return d->blurBehindEnabled;
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}
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}
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#include "moc_theme.cpp"
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