Add option to override the UI color

* Add -color option to core plugin which will override
   the base UI color for that session.

Reviewed-by: thorbjorn

src/plugins/coreplugin/Core.pluginspec

@@ -12,4 +12,7 @@ Alternatively, this plugin may be used under the terms of the GNU Lesser General
     </license>
     <description>The core plugin for the Qt IDE.</description>
     <url>http://qt.nokia.com</url>
+    <argumentList>
+        <argument name="-color" parameter="color">Override selected UI color</argument>
+    </argumentList>
 </plugin>

src/plugins/coreplugin/coreplugin.cpp

@@ -37,6 +37,7 @@
 #include <extensionsystem/pluginmanager.h>
 
 #include <QtCore/QtPlugin>
+#include <QtCore/QDebug>
 
 using namespace Core::Internal;
 
@@ -58,9 +59,20 @@ CorePlugin::~CorePlugin()
     delete m_mainWindow;
 }
 
+void CorePlugin::parseArguments(const QStringList &arguments)
+{
+    for (int i = 0; i < arguments.size() - 1; i++) {
+        if (arguments.at(i) == QLatin1String("-color")) {
+            const QString colorcode(arguments.at(i + 1));
+            m_mainWindow->setOverrideColor(QColor(colorcode));
+            i++; // skip the argument
+        }
+    }
+}
+
 bool CorePlugin::initialize(const QStringList &arguments, QString *errorMessage)
 {
-    Q_UNUSED(arguments)
+    parseArguments(arguments);
     const bool success = m_mainWindow->init(errorMessage);
     if (success) {
         EditorManager *editorManager = m_mainWindow->editorManager();

src/plugins/coreplugin/coreplugin.h

@@ -54,6 +54,8 @@ public slots:
     void remoteArgument(const QString&);
 
 private:
+    void parseArguments(const QStringList & arguments);
+
     MainWindow *m_mainWindow;
     EditMode *m_editMode;
 };

src/plugins/coreplugin/mainwindow.cpp

@@ -228,6 +228,11 @@ void MainWindow::setSuppressNavigationWidget(bool suppress)
         m_navigationWidget->setSuppressed(suppress);
 }
 
+void MainWindow::setOverrideColor(const QColor &color)
+{
+    m_overrideColor = color;
+}
+
 MainWindow::~MainWindow()
 {
     hide();
@@ -1103,7 +1108,10 @@ void MainWindow::readSettings()
 {
     m_settings->beginGroup(QLatin1String(settingsGroup));
 
-    Utils::StyleHelper::setBaseColor(m_settings->value(QLatin1String(colorKey)).value<QColor>());
+    if (m_overrideColor.isValid())
+        Utils::StyleHelper::setBaseColor(m_overrideColor);
+    else
+        Utils::StyleHelper::setBaseColor(m_settings->value(QLatin1String(colorKey)).value<QColor>());
 
     const QVariant geom = m_settings->value(QLatin1String(geometryKey));
     if (geom.isValid()) {
@@ -1126,7 +1134,8 @@ void MainWindow::writeSettings()
 {
     m_settings->beginGroup(QLatin1String(settingsGroup));
 
-    m_settings->setValue(QLatin1String(colorKey), Utils::StyleHelper::baseColor());
+    if (!(m_overrideColor.isValid() && Utils::StyleHelper::baseColor() == m_overrideColor))
+        m_settings->setValue(QLatin1String(colorKey), Utils::StyleHelper::baseColor());
 
     if (windowState() & (Qt::WindowMaximized | Qt::WindowFullScreen)) {
         m_settings->setValue(QLatin1String(maxKey), (bool) (windowState() & Qt::WindowMaximized));

src/plugins/coreplugin/mainwindow.h

@@ -35,6 +35,7 @@
 #include "eventfilteringmainwindow.h"
 
 #include <QtCore/QMap>
+#include <QtGui/QColor>
 
 QT_BEGIN_NAMESPACE
 class QSettings;
@@ -121,6 +122,8 @@ public:
 
     void setSuppressNavigationWidget(bool suppress);
 
+    void setOverrideColor(const QColor &color);
+
 signals:
     void windowActivated();
 
@@ -219,6 +222,7 @@ private:
 #endif
 
     QToolButton *m_toggleSideBarButton;
+    QColor m_overrideColor;
 };
 
 } // namespace Internal