From 20d6064f68ba674dc6967f6f091b084d5ba7512a Mon Sep 17 00:00:00 2001
From: Didier Clerc <shiba@Mac-mini.local>
Date: Thu, 18 Oct 2012 10:36:42 +0200
Subject: [PATCH] Managed enable state of items regarding screen number

---
 resources/etc/Uniboard.css           | 7 ++++++-
 src/core/UBPreferencesController.cpp | 8 ++++++++
 src/core/UBPreferencesController.h   | 5 ++++-
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/resources/etc/Uniboard.css b/resources/etc/Uniboard.css
index bd5cbbcf..9ae3cf38 100644
--- a/resources/etc/Uniboard.css
+++ b/resources/etc/Uniboard.css
@@ -1,6 +1,11 @@
-*
+QWidget:enabled
 {
    color: #3F3F3F;
+}
+
+QWidget:disabled
+{
+    color: #AAAAAA;
 }
 
 QTextEdit, 
diff --git a/src/core/UBPreferencesController.cpp b/src/core/UBPreferencesController.cpp
index 64fb3b20..06f62b5d 100644
--- a/src/core/UBPreferencesController.cpp
+++ b/src/core/UBPreferencesController.cpp
@@ -64,9 +64,12 @@ UBPreferencesController::UBPreferencesController(QWidget *parent)
     , mPenProperties(0)
     , mMarkerProperties(0)
 {
+    mDesktop = qApp->desktop();
     mPreferencesWindow = new UBPreferencesDialog(this,parent, Qt::Dialog);
     mPreferencesUI = new Ui::preferencesDialog();  // deleted in
     mPreferencesUI->setupUi(mPreferencesWindow);
+    adjustScreens(1);
+    connect(mDesktop, SIGNAL(screenCountChanged(int)), this, SLOT(adjustScreens(int)));
 
     wire();
 }
@@ -83,6 +86,11 @@ UBPreferencesController::~UBPreferencesController()
     delete mMarkerProperties;
 }
 
+void UBPreferencesController::adjustScreens(int screen)
+{
+    UBDisplayManager displayManager;
+    mPreferencesUI->multiDisplayGroupBox->setEnabled(displayManager.numScreens() > 1);
+}
 
 void UBPreferencesController::show()
 {
diff --git a/src/core/UBPreferencesController.h b/src/core/UBPreferencesController.h
index 7ce7e0e9..74529392 100644
--- a/src/core/UBPreferencesController.h
+++ b/src/core/UBPreferencesController.h
@@ -85,12 +85,15 @@ class UBPreferencesController : public QObject
         void onCommunityPasswordChanged();
         void onCommunityPersistenceChanged();
 
-    private:
+    private slots:
+        void adjustScreens(int screen);
 
+    private:
         static qreal sSliderRatio;
         static qreal sMinPenWidth;
         static qreal sMaxPenWidth;
         void persistanceCheckboxUpdate();
+        QDesktopWidget* mDesktop;
 
 };