560 lines
16 KiB
C++
560 lines
16 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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#ifdef Q_WS_X11
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#include <QX11Info>
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#endif
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#include <KColorScheme>
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#include <KComponentData>
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#include <KConfigGroup>
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#include <KDebug>
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#include <KGlobal>
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#include <KGlobalSettings>
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#include <KPixmapCache>
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#include <KSelectionWatcher>
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#include <KSharedConfig>
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#include <KStandardDirs>
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#include <KWindowSystem>
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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 "Blue_Curl"
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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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{
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KConfigGroup cg(KGlobal::config(), "CachePolicies");
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bool useCache = cg.readEntry("CacheTheme", true);
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if (useCache) {
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pixmapCache = new KPixmapCache(KGlobal::mainComponent().componentName());
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pixmapCache->setCacheLimit(cg.readEntry("ThemeCacheKb", 80 * 1024));
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}
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generalFont = QApplication::font();
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}
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~ThemePrivate()
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{
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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("plasmarc"), 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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static const char *defaultTheme;
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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, QList<QString> > invalidElements;
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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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};
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PackageStructure::Ptr ThemePrivate::packageStructure(0);
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const char *ThemePrivate::defaultTheme = "default";
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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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emit q->themeChanged();
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}
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#endif
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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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}
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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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#ifdef Q_WS_X11
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Display *dpy = QX11Info::display();
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int screen = DefaultScreen(dpy);
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d->locolor = DefaultDepth(dpy, screen) < 16;
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if (!d->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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d->compositeWatch = new KSelectionWatcher(net_wm_cm_name, -1, this);
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connect(d->compositeWatch, SIGNAL(newOwner(Window)), this, SLOT(compositingChanged()));
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connect(d->compositeWatch, SIGNAL(lostOwner()), this, SLOT(compositingChanged()));
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}
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#endif
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}
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Theme::~Theme()
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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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void Theme::settingsChanged()
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{
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setThemeName(d->config().readEntry("name", ThemePrivate::defaultTheme));
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}
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void Theme::setThemeName(const QString &themeName)
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{
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QString theme = themeName;
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if (theme.isEmpty() || theme == d->themeName) {
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// let's try and get the default theme at least
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if (d->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() && d->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 (d->themeName == theme) {
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return;
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}
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if (!d->themeName.isEmpty() && d->pixmapCache) {
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d->pixmapCache->discard();
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}
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d->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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KConfig metadata(KStandardDirs::locate("data", "desktoptheme/" + theme + "/metadata.desktop"));
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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 = d->config();
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}
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d->defaultWallpaperTheme = cg.readEntry("defaultWallpaperTheme", DEFAULT_WALLPAPER_THEME);
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d->defaultWallpaperSuffix = cg.readEntry("defaultFileSuffix", DEFAULT_WALLPAPER_SUFFIX);
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d->defaultWallpaperWidth = cg.readEntry("defaultWidth", DEFAULT_WALLPAPER_WIDTH);
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d->defaultWallpaperHeight = cg.readEntry("defaultHeight", DEFAULT_WALLPAPER_HEIGHT);
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disconnect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()),
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this, SIGNAL(themeChanged()));
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if (colorsFile.isEmpty()) {
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d->colors = 0;
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connect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()),
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this, SIGNAL(themeChanged()));
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} else {
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d->colors = KSharedConfig::openConfig(colorsFile);
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}
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d->colorScheme = KColorScheme(QPalette::Active, KColorScheme::Window, d->colors);
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d->buttonColorScheme = KColorScheme(QPalette::Active, KColorScheme::Button, d->colors);
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d->hasWallpapers =
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!KStandardDirs::locate("data", "desktoptheme/" + theme + "/wallpapers").isEmpty();
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if (d->isDefault) {
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// we're the default theme, let's save our state
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KConfigGroup &cg = d->config();
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if (ThemePrivate::defaultTheme == d->themeName) {
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cg.deleteEntry("name");
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} else {
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cg.writeEntry("name", d->themeName);
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}
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}
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QString svgElementsFile = KStandardDirs::locateLocal("cache", "plasma-svgelements-"+themeName);
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d->invalidElements.clear();
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d->svgElementsCache = KSharedConfig::openConfig(svgElementsFile);
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emit 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("../")) {
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// we don't support relative paths
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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("wallpaper/" + image, d->themeName);
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if (fullPath.isEmpty()) {
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fullPath = d->findInTheme("wallpaper/" + 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
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{
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if (name.contains("../")) {
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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 + ".svgz", d->themeName).isEmpty()) ||
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!(d->findInTheme(name + ".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) const
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{
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switch (role) {
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case TextColor:
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return d->colorScheme.foreground(KColorScheme::NormalText).color();
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break;
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case HighlightColor:
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return d->colorScheme.background(KColorScheme::ActiveBackground).color();
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break;
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case BackgroundColor:
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return d->colorScheme.background().color();
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break;
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case ButtonTextColor:
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return d->buttonColorScheme.foreground(KColorScheme::NormalText).color();
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break;
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case ButtonBackgroundColor:
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return d->buttonColorScheme.background(KColorScheme::ActiveBackground).color();
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break;
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}
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return QColor();
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}
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void Theme::setFont(const QFont &font, FontRole role)
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{
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Q_UNUSED(role)
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d->generalFont = font;
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}
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QFont Theme::font(FontRole role) const
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{
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Q_UNUSED(role)
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switch (role) {
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case DesktopFont:
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{
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KConfigGroup cg(KGlobal::config(), "General");
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return cg.readEntry("desktopFont", QFont("Sans Serif", 10));
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}
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break;
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case DefaultFont:
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default:
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return d->generalFont;
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break;
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}
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}
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QFontMetrics Theme::fontMetrics() const
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{
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//TODO: allow this to be overridden with a plasma specific font?
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return QFontMetrics(d->generalFont);
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}
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bool Theme::windowTranslucencyEnabled() const
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{
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return d->compositingActive;
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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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settingsChanged();
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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)
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{
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return d->pixmapCache && d->pixmapCache->find(key, pix);
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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->pixmapCache) {
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d->pixmapCache->insert(key, pix);
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}
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}
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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->pixmapCache) {
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return false;
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}
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KConfigGroup imageGroup(d->svgElementsCache, image);
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rect = imageGroup.readEntry(element+"Size", QRectF());
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if (!d->invalidElements.contains(image)) {
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d->invalidElements[image] = imageGroup.readEntry("invalidElements", QStringList());
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}
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return d->invalidElements[image].contains(element) || rect.isValid();
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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->pixmapCache) {
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return;
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}
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KConfigGroup imageGroup(d->svgElementsCache, image);
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if (rect.isValid()) {
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imageGroup.writeEntry(element+"Size", rect);
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} else if (!d->invalidElements[image].contains(element)) {
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d->invalidElements[image].append(element);
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if (d->invalidElements[image].count() > 1000) {
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d->invalidElements[image].pop_front();
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}
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imageGroup.writeEntry("invalidElements", d->invalidElements[image]);
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}
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}
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void Theme::invalidateRectsCache(const QString& image)
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{
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KConfigGroup imageGroup(d->svgElementsCache, image);
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imageGroup.deleteGroup();
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}
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void Theme::setCacheLimit(int kbytes)
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{
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if (d->pixmapCache) {
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d->pixmapCache->setCacheLimit(kbytes);
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}
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}
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}
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#include <theme.moc>
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