From 613dc0a44057ad6454004328c0408815a07ec5c7 Mon Sep 17 00:00:00 2001
From: Mathias Soeken <soeken@pprojekt.de>
Date: Mon, 19 Jan 2009 11:43:49 +0000
Subject: [PATCH] kruler is now configurable to be (semi-)transparent. There is
 a new menu "Opacity" in the context menu with a slider to set windowOpacity.
 This value is stored and restored in the settings file.

BUGS: 116318


svn path=/trunk/KDE/kdegraphics/kruler/; revision=913428
---
 klineal.cpp | 23 +++++++++++++++++++++++
 klineal.h   |  1 +
 kruler.kcfg |  4 ++++
 3 files changed, 28 insertions(+)

diff --git a/klineal.cpp b/klineal.cpp
index 17f11e3..7087a2a 100644
--- a/klineal.cpp
+++ b/klineal.cpp
@@ -23,6 +23,8 @@
 #include <QPainter>
 #include <QMouseEvent>
 #include <QShortcut>
+#include <QSlider>
+#include <QWidgetAction>
 
 #include <KAction>
 #include <KColorDialog>
@@ -189,6 +191,20 @@ KLineal::KLineal( QWidget *parent )
   new QShortcut( Qt::Key_O, this, SLOT( slotOffset() ) );
   mMenu->addMenu( scaleMenu );
 
+  setWindowOpacity( RulerSettings::self()->opacity() / 100.0 );
+  KMenu* opacityMenu = new KMenu( i18n( "O&pacity" ), this );
+  QWidgetAction *opacityAction = new QWidgetAction( this );
+  QSlider *slider = new QSlider( this );
+  slider->setMinimum( 10 );
+  slider->setMaximum( 100 );
+  slider->setSingleStep( 1 );
+  slider->setOrientation( Qt::Horizontal );
+  slider->setValue( int( windowOpacity() * 100 ) );
+  connect( slider, SIGNAL( valueChanged( int ) ), this, SLOT( slotOpacity( int ) ) );
+  opacityAction->setDefaultWidget( slider );
+  opacityMenu->addAction( opacityAction );
+  mMenu->addMenu( opacityMenu );
+
   mMenu->addAction( KStandardAction::preferences( this, SLOT( slotPreferences() ), this ) );
   mMenu->addSeparator();
   KAction *copyColorAction = KStandardAction::copy( this, SLOT( copyColor() ), this );
@@ -514,6 +530,13 @@ void KLineal::slotLength()
   }
 }
 
+void KLineal::slotOpacity( int value )
+{
+  setWindowOpacity( value / 100.0 );
+  RulerSettings::self()->setOpacity( value );
+  RulerSettings::self()->writeConfig();
+}
+
 void KLineal::slotPreferences()
 {
   KConfigDialog *dialog = new KConfigDialog( this, "settings", RulerSettings::self() );
diff --git a/klineal.h b/klineal.h
index bc0915b..db2b9c1 100644
--- a/klineal.h
+++ b/klineal.h
@@ -101,6 +101,7 @@ public slots:
   void centerOrigin();
   void slotOffset();
   void slotLength();
+  void slotOpacity( int value );
   void slotPreferences();
   void switchRelativeScale( bool checked );
   void copyColor();
diff --git a/kruler.kcfg b/kruler.kcfg
index 7fce971..e495bf4 100644
--- a/kruler.kcfg
+++ b/kruler.kcfg
@@ -37,5 +37,9 @@
       <label>Is a tray icon used</label>
       <default>false</default>
     </entry>
+    <entry name="Opacity" type="Int">
+      <label>Opacity of the window</label>
+      <default>100</default>
+    </entry>
   </group>
 </kcfg>
-- 
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