756 lines
21 KiB
C++
756 lines
21 KiB
C++
/*
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* Copyright 2006-2007 Aaron Seigo <aseigo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "theme.h"
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#include <QApplication>
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#include <QFile>
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#include <QFileInfo>
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#include <QTimer>
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#ifdef Q_WS_X11
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#include <QX11Info>
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#endif
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#include <kcolorscheme.h>
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#include <kcomponentdata.h>
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#include <kconfiggroup.h>
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#include <kdebug.h>
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#include <kdirwatch.h>
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#include <kglobal.h>
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#include <kglobalsettings.h>
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#include <kmanagerselection.h>
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#include <kpixmapcache.h>
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#include <ksharedconfig.h>
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#include <kstandarddirs.h>
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#include <kwindowsystem.h>
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#include "private/packages_p.h"
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namespace Plasma
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{
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#define DEFAULT_WALLPAPER_THEME "Air"
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#define DEFAULT_WALLPAPER_SUFFIX ".jpg"
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static const int DEFAULT_WALLPAPER_WIDTH = 1920;
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static const int DEFAULT_WALLPAPER_HEIGHT = 1200;
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class ThemePrivate
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{
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public:
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ThemePrivate(Theme *theme)
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: q(theme),
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colorScheme(QPalette::Active, KColorScheme::Window, KSharedConfigPtr(0)),
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buttonColorScheme(QPalette::Active, KColorScheme::Button, KSharedConfigPtr(0)),
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defaultWallpaperTheme(DEFAULT_WALLPAPER_THEME),
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defaultWallpaperSuffix(DEFAULT_WALLPAPER_SUFFIX),
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defaultWallpaperWidth(DEFAULT_WALLPAPER_WIDTH),
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defaultWallpaperHeight(DEFAULT_WALLPAPER_HEIGHT),
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pixmapCache(0),
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locolor(false),
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compositingActive(KWindowSystem::compositingActive()),
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isDefault(false),
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useGlobal(true),
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hasWallpapers(false),
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useNativeWidgetStyle(false)
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{
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generalFont = QApplication::font();
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cacheTheme = cacheConfig().readEntry("CacheTheme", true);
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#ifdef Q_WS_X11
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Display *dpy = QX11Info::display();
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int screen = DefaultScreen(dpy);
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locolor = DefaultDepth(dpy, screen) < 16;
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if (!locolor) {
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char net_wm_cm_name[100];
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sprintf(net_wm_cm_name, "_NET_WM_CM_S%d", screen);
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compositeWatch = new KSelectionWatcher(net_wm_cm_name, -1, q);
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QObject::connect(compositeWatch, SIGNAL(newOwner(Window)), q, SLOT(compositingChanged()));
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QObject::connect(compositeWatch, SIGNAL(lostOwner()), q, SLOT(compositingChanged()));
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}
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#endif
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saveTimer = new QTimer(q);
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saveTimer->setSingleShot(true);
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QObject::connect(saveTimer, SIGNAL(timeout()), q, SLOT(scheduledCacheUpdate()));
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}
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~ThemePrivate()
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{
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delete pixmapCache;
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}
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KConfigGroup cacheConfig()
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{
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return KConfigGroup(KSharedConfig::openConfig(themeRcFile), "CachePolicies");
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}
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KConfigGroup &config()
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{
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if (!cfg.isValid()) {
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QString groupName = "Theme";
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if (!useGlobal) {
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QString app = KGlobal::mainComponent().componentName();
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if (!app.isEmpty() && app != "plasma") {
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kDebug() << "using theme for app" << app;
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groupName.append("-").append(app);
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}
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}
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cfg = KConfigGroup(KSharedConfig::openConfig(themeRcFile), groupName);
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}
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return cfg;
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}
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QString findInTheme(const QString &image, const QString &theme) const;
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void compositingChanged();
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void discardCache();
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void discardCache(bool recreateElementsCache);
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void scheduledCacheUpdate();
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void colorsChanged();
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bool useCache();
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void settingsFileChanged(const QString &);
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void setThemeName(const QString &themeName, bool writeSettings);
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static const char *defaultTheme;
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static const char *themeRcFile;
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static PackageStructure::Ptr packageStructure;
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Theme *q;
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QString themeName;
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KSharedConfigPtr colors;
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KColorScheme colorScheme;
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KColorScheme buttonColorScheme;
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KConfigGroup cfg;
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QFont generalFont;
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QString defaultWallpaperTheme;
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QString defaultWallpaperSuffix;
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int defaultWallpaperWidth;
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int defaultWallpaperHeight;
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KPixmapCache *pixmapCache;
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KSharedConfigPtr svgElementsCache;
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QHash<QString, QSet<QString> > invalidElements;
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QHash<QString, QPixmap> pixmapsToCache;
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QTimer *saveTimer;
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#ifdef Q_WS_X11
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KSelectionWatcher *compositeWatch;
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#endif
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bool locolor : 1;
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bool compositingActive : 1;
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bool isDefault : 1;
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bool useGlobal : 1;
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bool hasWallpapers : 1;
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bool cacheTheme : 1;
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bool useNativeWidgetStyle :1;
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};
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PackageStructure::Ptr ThemePrivate::packageStructure(0);
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const char *ThemePrivate::defaultTheme = "default";
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const char *ThemePrivate::themeRcFile = "plasmarc";
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bool ThemePrivate::useCache()
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{
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if (cacheTheme && !pixmapCache) {
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pixmapCache = new KPixmapCache("plasma_theme_" + themeName);
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pixmapCache->setCacheLimit(cacheConfig().readEntry("ThemeCacheKb", 80 * 1024));
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}
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return cacheTheme;
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}
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QString ThemePrivate::findInTheme(const QString &image, const QString &theme) const
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{
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//TODO: this should be using Package
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QString search;
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if (locolor) {
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search = "desktoptheme/" + theme + "/locolor/" + image;
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search = KStandardDirs::locate("data", search);
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} else if (!compositingActive) {
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search = "desktoptheme/" + theme + "/opaque/" + image;
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search = KStandardDirs::locate("data", search);
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}
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//not found or compositing enabled
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if (search.isEmpty()) {
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search = "desktoptheme/" + theme + '/' + image;
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search = KStandardDirs::locate("data", search);
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}
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return search;
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}
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void ThemePrivate::compositingChanged()
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{
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#ifdef Q_WS_X11
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bool nowCompositingActive = compositeWatch->owner() != None;
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if (compositingActive != nowCompositingActive) {
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compositingActive = nowCompositingActive;
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discardCache(true);
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emit q->themeChanged();
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}
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#endif
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}
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void ThemePrivate::discardCache()
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{
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discardCache(true);
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}
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void ThemePrivate::discardCache(bool recreateElementsCache)
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{
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KPixmapCache::deleteCache("plasma_theme_" + themeName);
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delete pixmapCache;
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pixmapCache = 0;
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invalidElements.clear();
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pixmapsToCache.clear();
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saveTimer->stop();
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svgElementsCache = 0;
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QString svgElementsFile = KStandardDirs::locateLocal("cache", "plasma-svgelements-" + themeName);
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if (!svgElementsFile.isEmpty()) {
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QFile f(svgElementsFile);
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f.remove();
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}
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if (recreateElementsCache) {
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svgElementsCache = KSharedConfig::openConfig(svgElementsFile);
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}
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}
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void ThemePrivate::scheduledCacheUpdate()
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{
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//kDebug()<< "Saving to cache:";
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QHash<QString, QPixmap>::const_iterator it = pixmapsToCache.constBegin();
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while (it != pixmapsToCache.constEnd()) {
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//kDebug()<< "Saving item to cache: " << it.key();
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pixmapCache->insert(it.key(), it.value());
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++it;
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}
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pixmapsToCache.clear();
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}
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void ThemePrivate::colorsChanged()
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{
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discardCache(true);
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colorScheme = KColorScheme(QPalette::Active, KColorScheme::Window, colors);
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buttonColorScheme = KColorScheme(QPalette::Active, KColorScheme::Button, colors);
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emit q->themeChanged();
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}
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class ThemeSingleton
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{
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public:
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ThemeSingleton()
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{
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self.d->isDefault = true;
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//FIXME: if/when kconfig gets change notification, this will be unecessary
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KDirWatch::self()->addFile(KStandardDirs::locateLocal("config", ThemePrivate::themeRcFile));
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QObject::connect(KDirWatch::self(), SIGNAL(created(QString)), &self, SLOT(settingsFileChanged(QString)));
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QObject::connect(KDirWatch::self(), SIGNAL(dirty(QString)), &self, SLOT(settingsFileChanged(QString)));
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}
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Theme self;
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};
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K_GLOBAL_STATIC(ThemeSingleton, privateThemeSelf)
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Theme *Theme::defaultTheme()
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{
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return &privateThemeSelf->self;
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}
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Theme::Theme(QObject *parent)
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: QObject(parent),
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d(new ThemePrivate(this))
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{
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settingsChanged();
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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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d(new ThemePrivate(this))
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{
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// turn off caching so we don't accidently 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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setThemeName(themeName);
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d->cacheTheme = useCache;
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}
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Theme::~Theme()
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{
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QHashIterator<QString, QSet<QString> > it(d->invalidElements);
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while (it.hasNext()) {
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it.next();
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KConfigGroup imageGroup(d->svgElementsCache, it.key());
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imageGroup.writeEntry("invalidElements", it.value().toList()); //FIXME: add QSet support to KConfig
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}
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delete d;
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}
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PackageStructure::Ptr Theme::packageStructure()
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{
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if (!ThemePrivate::packageStructure) {
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ThemePrivate::packageStructure = new ThemePackage();
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}
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return ThemePrivate::packageStructure;
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}
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KPluginInfo::List Theme::listThemeInfo()
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{
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QStringList themes = KGlobal::dirs()->findAllResources("data", "desktoptheme/*/metadata.desktop",
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KStandardDirs::NoDuplicates);
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return KPluginInfo::fromFiles(themes);
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}
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void ThemePrivate::settingsFileChanged(const QString &file)
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{
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if (file.endsWith(themeRcFile)) {
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config().config()->reparseConfiguration();
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q->settingsChanged();
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}
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}
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void Theme::settingsChanged()
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{
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d->setThemeName(d->config().readEntry("name", ThemePrivate::defaultTheme), false);
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}
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void Theme::setThemeName(const QString &themeName)
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{
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d->setThemeName(themeName, true);
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}
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void ThemePrivate::setThemeName(const QString &tempThemeName, bool writeSettings)
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{
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//kDebug() << tempThemeName;
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QString theme = tempThemeName;
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if (theme.isEmpty() || theme == themeName) {
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// let's try and get the default theme at least
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if (themeName.isEmpty()) {
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theme = ThemePrivate::defaultTheme;
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} else {
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return;
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}
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}
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//TODO: should we care about names with relative paths in them?
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QString themePath = KStandardDirs::locate("data", "desktoptheme/" + theme + '/');
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if (themePath.isEmpty() && themeName.isEmpty()) {
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themePath = KStandardDirs::locate("data", "desktoptheme/default/");
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if (themePath.isEmpty()) {
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return;
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}
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theme = ThemePrivate::defaultTheme;
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}
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if (themeName == theme) {
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return;
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}
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//discard the old theme cache
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if (!themeName.isEmpty() && pixmapCache) {
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discardCache(false);
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}
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themeName = theme;
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// load the color scheme config
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QString colorsFile = KStandardDirs::locate("data", "desktoptheme/" + theme + "/colors");
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//kDebug() << "we're going for..." << colorsFile << "*******************";
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// load the wallpaper settings, if any
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QString metadataPath(KStandardDirs::locate("data", "desktoptheme/" + theme + "/metadata.desktop"));
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KConfig metadata(metadataPath);
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KConfigGroup cg;
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if (metadata.hasGroup("Wallpaper")) {
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// we have a theme color config, so let's also check to see if
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// there is a wallpaper defined in there.
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cg = KConfigGroup(&metadata, "Wallpaper");
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} else {
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// since we didn't find an entry in the theme, let's look in the main
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// theme config
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cg = config();
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}
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defaultWallpaperTheme = cg.readEntry("defaultWallpaperTheme", DEFAULT_WALLPAPER_THEME);
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defaultWallpaperSuffix = cg.readEntry("defaultFileSuffix", DEFAULT_WALLPAPER_SUFFIX);
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defaultWallpaperWidth = cg.readEntry("defaultWidth", DEFAULT_WALLPAPER_WIDTH);
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defaultWallpaperHeight = cg.readEntry("defaultHeight", DEFAULT_WALLPAPER_HEIGHT);
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cg = KConfigGroup(&metadata, "Settings");
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useNativeWidgetStyle = cg.readEntry("UseNativeWidgetStyle", false);
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QObject::disconnect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()),
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q, SLOT(colorsChanged()));
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if (colorsFile.isEmpty()) {
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colors = 0;
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QObject::connect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()),
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q, SLOT(colorsChanged()));
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} else {
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colors = KSharedConfig::openConfig(colorsFile);
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}
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colorScheme = KColorScheme(QPalette::Active, KColorScheme::Window, colors);
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buttonColorScheme = KColorScheme(QPalette::Active, KColorScheme::Button, colors);
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hasWallpapers = KStandardDirs::exists(KStandardDirs::locateLocal("data", "desktoptheme/" + theme + "/wallpapers/"));
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if (isDefault && writeSettings) {
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// we're the default theme, let's save our state
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KConfigGroup &cg = config();
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if (ThemePrivate::defaultTheme == themeName) {
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cg.deleteEntry("name");
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} else {
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cg.writeEntry("name", themeName);
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}
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cg.sync();
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}
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//check for expired cache
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QFile f(metadataPath);
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QFileInfo info(f);
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if (useCache() && info.lastModified().toTime_t() > pixmapCache->timestamp()) {
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discardCache(false);
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}
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invalidElements.clear();
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QString svgElementsFile = KStandardDirs::locateLocal("cache", "plasma-svgelements-" + themeName);
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svgElementsCache = KSharedConfig::openConfig(svgElementsFile);
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emit q->themeChanged();
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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("../") || name.isEmpty()) {
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// we don't support relative paths
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kDebug() << "Theme says: bad image path " << name;
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return QString();
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}
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QString path = d->findInTheme(name + ".svgz", d->themeName);
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if (path.isEmpty()) {
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// try for an uncompressed svg file
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path = d->findInTheme(name + ".svg", d->themeName);
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if (path.isEmpty() && d->themeName != ThemePrivate::defaultTheme) {
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// try a compressed svg file in the default theme
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path = d->findInTheme(name + ".svgz", ThemePrivate::defaultTheme);
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if (path.isEmpty()) {
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// try an uncompressed svg file in the default theme
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path = d->findInTheme(name + ".svg", ThemePrivate::defaultTheme);
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}
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}
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}
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if (path.isEmpty()) {
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kDebug() << "Theme says: bad image path " << name;
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}
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return path;
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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;
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image.append("/contents/images/%1x%2").append(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("wallpapers/" + image, d->themeName);
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if (fullPath.isEmpty()) {
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fullPath = d->findInTheme("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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//kDebug() << "looking for" << image;
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fullPath = KStandardDirs::locate("wallpaper", 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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//kDebug() << "looking for" << defaultImage;
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fullPath = KStandardDirs::locate("wallpaper", defaultImage);
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if (fullPath.isEmpty()) {
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kDebug() << "exhausted every effort to find a wallpaper.";
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}
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}
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return fullPath;
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}
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|
bool Theme::currentThemeHasImage(const QString &name) const
|
|
{
|
|
if (name.contains("../")) {
|
|
// we don't support relative paths
|
|
return false;
|
|
}
|
|
|
|
return !(d->findInTheme(name + ".svgz", d->themeName).isEmpty()) ||
|
|
!(d->findInTheme(name + ".svg", d->themeName).isEmpty());
|
|
}
|
|
|
|
KSharedConfigPtr Theme::colorScheme() const
|
|
{
|
|
return d->colors;
|
|
}
|
|
|
|
QColor Theme::color(ColorRole role) const
|
|
{
|
|
switch (role) {
|
|
case TextColor:
|
|
return d->colorScheme.foreground(KColorScheme::NormalText).color();
|
|
break;
|
|
|
|
case HighlightColor:
|
|
return d->colorScheme.background(KColorScheme::ActiveBackground).color();
|
|
break;
|
|
|
|
case BackgroundColor:
|
|
return d->colorScheme.background().color();
|
|
break;
|
|
|
|
case ButtonTextColor:
|
|
return d->buttonColorScheme.foreground(KColorScheme::NormalText).color();
|
|
break;
|
|
|
|
case ButtonBackgroundColor:
|
|
return d->buttonColorScheme.background(KColorScheme::ActiveBackground).color();
|
|
break;
|
|
}
|
|
|
|
return QColor();
|
|
}
|
|
|
|
void Theme::setFont(const QFont &font, FontRole role)
|
|
{
|
|
Q_UNUSED(role)
|
|
d->generalFont = font;
|
|
}
|
|
|
|
QFont Theme::font(FontRole role) const
|
|
{
|
|
Q_UNUSED(role)
|
|
switch (role) {
|
|
case DesktopFont:
|
|
{
|
|
KConfigGroup cg(KGlobal::config(), "General");
|
|
return cg.readEntry("desktopFont", QFont("Sans Serif", 10));
|
|
}
|
|
break;
|
|
case DefaultFont:
|
|
default:
|
|
return d->generalFont;
|
|
break;
|
|
}
|
|
}
|
|
|
|
QFontMetrics Theme::fontMetrics() const
|
|
{
|
|
//TODO: allow this to be overridden with a plasma specific font?
|
|
return QFontMetrics(d->generalFont);
|
|
}
|
|
|
|
bool Theme::windowTranslucencyEnabled() const
|
|
{
|
|
return d->compositingActive;
|
|
}
|
|
|
|
void Theme::setUseGlobalSettings(bool useGlobal)
|
|
{
|
|
if (d->useGlobal == useGlobal) {
|
|
return;
|
|
}
|
|
|
|
d->useGlobal = useGlobal;
|
|
d->cfg = KConfigGroup();
|
|
d->themeName.clear();
|
|
settingsChanged();
|
|
}
|
|
|
|
bool Theme::useGlobalSettings() const
|
|
{
|
|
return d->useGlobal;
|
|
}
|
|
|
|
bool Theme::useNativeWidgetStyle() const
|
|
{
|
|
return d->useNativeWidgetStyle;
|
|
}
|
|
|
|
bool Theme::findInCache(const QString &key, QPixmap &pix)
|
|
{
|
|
if (d->useCache()) {
|
|
if (d->pixmapsToCache.contains(key)) {
|
|
pix = d->pixmapsToCache.value(key);
|
|
return true;
|
|
}
|
|
|
|
return d->pixmapCache->find(key, pix);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// BIC FIXME: Should be merged with the other findInCache method above when we break BC
|
|
bool Theme::findInCache(const QString &key, QPixmap &pix, unsigned int lastModified)
|
|
{
|
|
if (d->useCache() && lastModified > d->pixmapCache->timestamp()) {
|
|
d->discardCache();
|
|
}
|
|
|
|
return findInCache(key, pix);
|
|
}
|
|
|
|
void Theme::insertIntoCache(const QString& key, const QPixmap& pix)
|
|
{
|
|
if (d->useCache()) {
|
|
d->pixmapsToCache.insert(key, pix);
|
|
d->saveTimer->start(500);
|
|
}
|
|
}
|
|
|
|
bool Theme::findInRectsCache(const QString &image, const QString &element, QRectF &rect) const
|
|
{
|
|
if (!d->pixmapCache) {
|
|
return false;
|
|
}
|
|
|
|
KConfigGroup imageGroup(d->svgElementsCache, image);
|
|
rect = imageGroup.readEntry(element + "Size", QRectF());
|
|
|
|
if (rect.isValid()) {
|
|
return true;
|
|
}
|
|
|
|
//A single _ means the element is empty and we're asked for the size of
|
|
//the whole image, so the whole image is never invalid
|
|
if (element.count('_') == 1) {
|
|
return false;
|
|
}
|
|
|
|
bool invalid = false;
|
|
|
|
QHash<QString, QSet<QString> >::iterator it = d->invalidElements.find(image);
|
|
if (it == d->invalidElements.end()) {
|
|
QSet<QString> elements = imageGroup.readEntry("invalidElements", QStringList()).toSet();
|
|
d->invalidElements.insert(image, elements);
|
|
invalid = elements.contains(element);
|
|
} else {
|
|
invalid = it.value().contains(element);
|
|
}
|
|
|
|
return invalid;
|
|
}
|
|
|
|
void Theme::insertIntoRectsCache(const QString& image, const QString &element, const QRectF &rect)
|
|
{
|
|
if (!d->pixmapCache) {
|
|
return;
|
|
}
|
|
|
|
if (rect.isValid()) {
|
|
KConfigGroup imageGroup(d->svgElementsCache, image);
|
|
imageGroup.writeEntry(element + "Size", rect);
|
|
} else {
|
|
QHash<QString, QSet<QString> >::iterator it = d->invalidElements.find(image);
|
|
if (it == d->invalidElements.end()) {
|
|
d->invalidElements[image].insert(element);
|
|
} else if (!it.value().contains(element)) {
|
|
if (it.value().count() > 1000) {
|
|
it.value().erase(it.value().begin());
|
|
}
|
|
|
|
it.value().insert(element);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Theme::invalidateRectsCache(const QString& image)
|
|
{
|
|
KConfigGroup imageGroup(d->svgElementsCache, image);
|
|
imageGroup.deleteGroup();
|
|
|
|
releaseRectsCache(image);
|
|
}
|
|
|
|
void Theme::releaseRectsCache(const QString &image)
|
|
{
|
|
QHash<QString, QSet<QString> >::iterator it = d->invalidElements.find(image);
|
|
if (it != d->invalidElements.end()) {
|
|
d->invalidElements.erase(it);
|
|
}
|
|
}
|
|
|
|
void Theme::setCacheLimit(int kbytes)
|
|
{
|
|
if (d->useCache()) {
|
|
d->pixmapCache->setCacheLimit(kbytes);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#include <theme.moc>
|