Adding plasma5 support for QKdeTheme

Plasma 5 uses the same config files structure, but follows XDG spec
instead of storing them in custom locations.
Added '5' to supported KDE session version, and passing it to other
methods because 'kdeglobals' is located directly under XDG config
dirs and not deeper inside.

[ChangeLog][QtPlatformSupport][QKdeTheme] adding plasma5 support

Change-Id: I5f1d8d8f8d02449328db3ffc391ad23506cd67c7
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 36 insertions, 28 deletions

diff --git a/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp b/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
index 2e17c3f63c..cd38498217 100644
--- a/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
+++ b/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
@@ -47,6 +47,7 @@
 #include <QtCore/QLoggingCategory>
 #include <QtCore/QSettings>
 #include <QtCore/QVariant>
+#include <QtCore/QStandardPaths>
 #include <QtCore/QStringList>
 #include <private/qguiapplication_p.h>
 #include <qpa/qplatformintegration.h>
@@ -209,14 +210,16 @@ public:
         , wheelScrollLines(3)
     { }
 
-    static QString kdeGlobals(const QString &kdeDir)
+    static QString kdeGlobals(const QString &kdeDir, int kdeVersion)
     {
+        if (kdeVersion > 4)
+            return kdeDir + QStringLiteral("/kdeglobals");
         return kdeDir + QStringLiteral("/share/config/kdeglobals");
     }
 
     void refresh();
-    static QVariant readKdeSetting(const QString &key, const QStringList &kdeDirs, QHash<QString, QSettings*> &kdeSettings);
-    static void readKdeSystemPalette(const QStringList &kdeDirs, QHash<QString, QSettings*> &kdeSettings, QPalette *pal);
+    static QVariant readKdeSetting(const QString &key, const QStringList &kdeDirs, int kdeVersion, QHash<QString, QSettings*> &kdeSettings);
+    static void readKdeSystemPalette(const QStringList &kdeDirs, int kdeVersion, QHash<QString, QSettings*> &kdeSettings, QPalette *pal);
     static QFont *kdeFont(const QVariant &fontValue);
     static QStringList kdeIconThemeSearchPaths(const QStringList &kdeDirs);
 
@@ -246,30 +249,30 @@ void QKdeThemePrivate::refresh()
     QHash<QString, QSettings*> kdeSettings;
 
     QPalette systemPalette = QPalette();
-    readKdeSystemPalette(kdeDirs, kdeSettings, &systemPalette);
+    readKdeSystemPalette(kdeDirs, kdeVersion, kdeSettings, &systemPalette);
     resources.palettes[QPlatformTheme::SystemPalette] = new QPalette(systemPalette);
     //## TODO tooltip color
 
-    const QVariant styleValue = readKdeSetting(QStringLiteral("widgetStyle"), kdeDirs, kdeSettings);
+    const QVariant styleValue = readKdeSetting(QStringLiteral("widgetStyle"), kdeDirs, kdeVersion, kdeSettings);
     if (styleValue.isValid()) {
         const QString style = styleValue.toString();
         if (style != styleNames.front())
             styleNames.push_front(style);
     }
 
-    const QVariant singleClickValue = readKdeSetting(QStringLiteral("KDE/SingleClick"), kdeDirs, kdeSettings);
+    const QVariant singleClickValue = readKdeSetting(QStringLiteral("KDE/SingleClick"), kdeDirs, kdeVersion, kdeSettings);
     if (singleClickValue.isValid())
         singleClick = singleClickValue.toBool();
 
-    const QVariant themeValue = readKdeSetting(QStringLiteral("Icons/Theme"), kdeDirs, kdeSettings);
+    const QVariant themeValue = readKdeSetting(QStringLiteral("Icons/Theme"), kdeDirs, kdeVersion, kdeSettings);
     if (themeValue.isValid())
         iconThemeName = themeValue.toString();
 
-    const QVariant toolBarIconSizeValue = readKdeSetting(QStringLiteral("ToolbarIcons/Size"), kdeDirs, kdeSettings);
+    const QVariant toolBarIconSizeValue = readKdeSetting(QStringLiteral("ToolbarIcons/Size"), kdeDirs, kdeVersion, kdeSettings);
     if (toolBarIconSizeValue.isValid())
         toolBarIconSize = toolBarIconSizeValue.toInt();
 
-    const QVariant toolbarStyleValue = readKdeSetting(QStringLiteral("Toolbar style/ToolButtonStyle"), kdeDirs, kdeSettings);
+    const QVariant toolbarStyleValue = readKdeSetting(QStringLiteral("Toolbar style/ToolButtonStyle"), kdeDirs, kdeVersion, kdeSettings);
     if (toolbarStyleValue.isValid()) {
         const QString toolBarStyle = toolbarStyleValue.toString();
         if (toolBarStyle == QLatin1String("TextBesideIcon"))
@@ -280,17 +283,17 @@ void QKdeThemePrivate::refresh()
             toolButtonStyle = Qt::ToolButtonTextUnderIcon;
     }
 
-    const QVariant wheelScrollLinesValue = readKdeSetting(QStringLiteral("KDE/WheelScrollLines"), kdeDirs, kdeSettings);
+    const QVariant wheelScrollLinesValue = readKdeSetting(QStringLiteral("KDE/WheelScrollLines"), kdeDirs, kdeVersion, kdeSettings);
     if (wheelScrollLinesValue.isValid())
         wheelScrollLines = wheelScrollLinesValue.toInt();
 
     // Read system font, ignore 'smallestReadableFont'
-    if (QFont *systemFont = kdeFont(readKdeSetting(QStringLiteral("font"), kdeDirs, kdeSettings)))
+    if (QFont *systemFont = kdeFont(readKdeSetting(QStringLiteral("font"), kdeDirs, kdeVersion, kdeSettings)))
         resources.fonts[QPlatformTheme::SystemFont] = systemFont;
     else
         resources.fonts[QPlatformTheme::SystemFont] = new QFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize);
 
-    if (QFont *fixedFont = kdeFont(readKdeSetting(QStringLiteral("fixed"), kdeDirs, kdeSettings))) {
+    if (QFont *fixedFont = kdeFont(readKdeSetting(QStringLiteral("fixed"), kdeDirs, kdeVersion, kdeSettings))) {
         resources.fonts[QPlatformTheme::FixedFont] = fixedFont;
     } else {
         fixedFont = new QFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize);
@@ -301,12 +304,12 @@ void QKdeThemePrivate::refresh()
     qDeleteAll(kdeSettings);
 }
 
-QVariant QKdeThemePrivate::readKdeSetting(const QString &key, const QStringList &kdeDirs, QHash<QString, QSettings*> &kdeSettings)
+QVariant QKdeThemePrivate::readKdeSetting(const QString &key, const QStringList &kdeDirs, int kdeVersion, QHash<QString, QSettings*> &kdeSettings)
 {
     foreach (const QString &kdeDir, kdeDirs) {
         QSettings *settings = kdeSettings.value(kdeDir);
         if (!settings) {
-            const QString kdeGlobalsPath = kdeGlobals(kdeDir);
+            const QString kdeGlobalsPath = kdeGlobals(kdeDir, kdeVersion);
             if (QFileInfo(kdeGlobalsPath).isReadable()) {
                 settings = new QSettings(kdeGlobalsPath, QSettings::IniFormat);
                 kdeSettings.insert(kdeDir, settings);
@@ -334,9 +337,9 @@ static inline bool kdeColor(QPalette *pal, QPalette::ColorRole role, const QVari
     return true;
 }
 
-void QKdeThemePrivate::readKdeSystemPalette(const QStringList &kdeDirs, QHash<QString, QSettings*> &kdeSettings, QPalette *pal)
+void QKdeThemePrivate::readKdeSystemPalette(const QStringList &kdeDirs, int kdeVersion, QHash<QString, QSettings*> &kdeSettings, QPalette *pal)
 {
-    if (!kdeColor(pal, QPalette::Button, readKdeSetting(QStringLiteral("Colors:Button/BackgroundNormal"), kdeDirs, kdeSettings))) {
+    if (!kdeColor(pal, QPalette::Button, readKdeSetting(QStringLiteral("Colors:Button/BackgroundNormal"), kdeDirs, kdeVersion, kdeSettings))) {
         // kcolorscheme.cpp: SetDefaultColors
         const QColor defaultWindowBackground(214, 210, 208);
         const QColor defaultButtonBackground(223, 220, 217);
@@ -344,18 +347,18 @@ void QKdeThemePrivate::readKdeSystemPalette(const QStringList &kdeDirs, QHash<QS
         return;
     }
 
-    kdeColor(pal, QPalette::Window, readKdeSetting(QStringLiteral("Colors:Window/BackgroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::Text, readKdeSetting(QStringLiteral("Colors:View/ForegroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::WindowText, readKdeSetting(QStringLiteral("Colors:Window/ForegroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::Base, readKdeSetting(QStringLiteral("Colors:View/BackgroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::Highlight, readKdeSetting(QStringLiteral("Colors:Selection/BackgroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::HighlightedText, readKdeSetting(QStringLiteral("Colors:Selection/ForegroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::AlternateBase, readKdeSetting(QStringLiteral("Colors:View/BackgroundAlternate"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::ButtonText, readKdeSetting(QStringLiteral("Colors:Button/ForegroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::Link, readKdeSetting(QStringLiteral("Colors:View/ForegroundLink"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::LinkVisited, readKdeSetting(QStringLiteral("Colors:View/ForegroundVisited"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::ToolTipBase, readKdeSetting(QStringLiteral("Colors:Tooltip/BackgroundNormal"), kdeDirs, kdeSettings));
-    kdeColor(pal, QPalette::ToolTipText, readKdeSetting(QStringLiteral("Colors:Tooltip/ForegroundNormal"), kdeDirs, kdeSettings));
+    kdeColor(pal, QPalette::Window, readKdeSetting(QStringLiteral("Colors:Window/BackgroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::Text, readKdeSetting(QStringLiteral("Colors:View/ForegroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::WindowText, readKdeSetting(QStringLiteral("Colors:Window/ForegroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::Base, readKdeSetting(QStringLiteral("Colors:View/BackgroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::Highlight, readKdeSetting(QStringLiteral("Colors:Selection/BackgroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::HighlightedText, readKdeSetting(QStringLiteral("Colors:Selection/ForegroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::AlternateBase, readKdeSetting(QStringLiteral("Colors:View/BackgroundAlternate"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::ButtonText, readKdeSetting(QStringLiteral("Colors:Button/ForegroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::Link, readKdeSetting(QStringLiteral("Colors:View/ForegroundLink"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::LinkVisited, readKdeSetting(QStringLiteral("Colors:View/ForegroundVisited"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::ToolTipBase, readKdeSetting(QStringLiteral("Colors:Tooltip/BackgroundNormal"), kdeDirs, kdeVersion, kdeSettings));
+    kdeColor(pal, QPalette::ToolTipText, readKdeSetting(QStringLiteral("Colors:Tooltip/ForegroundNormal"), kdeDirs, kdeVersion, kdeSettings));
 
     // The above code sets _all_ color roles to "normal" colors. In KDE, the disabled
     // color roles are calculated by applying various effects described in kdeglobals.
@@ -497,6 +500,11 @@ QPlatformTheme *QKdeTheme::createKdeTheme()
     if (kdeVersion < 4)
         return 0;
 
+    if (kdeVersion > 4)
+        // Plasma 5 follows XDG spec
+        // but uses the same config file format:
+        return new QKdeTheme(QStandardPaths::standardLocations(QStandardPaths::GenericConfigLocation), kdeVersion);
+
     // Determine KDE prefixes in the following priority order:
     // - KDEHOME and KDEDIRS environment variables
     // - ~/.kde(<version>)