added option to configure shadow color

default is set to Qt::black
BUG: 349360

kdecoration/breezedecoration.cpp

@@ -66,6 +66,7 @@ namespace Breeze
     static int g_sDecoCount = 0;
     static int g_shadowSize = 0;
     static int g_shadowStrength = 0;
+    static QColor g_shadowColor = Qt::black;
     static QSharedPointer<KDecoration2::DecorationShadow> g_sShadow;
 
     //________________________________________________________________
@@ -587,11 +588,17 @@ namespace Breeze
     {
 
         // assign global shadow if exists and parameters match
-        if( !( g_sShadow && g_shadowSize == m_internalSettings->shadowSize() && g_shadowStrength == m_internalSettings->shadowStrength() ) )
+        if(
+            !g_sShadow  ||
+            g_shadowSize != m_internalSettings->shadowSize() ||
+            g_shadowStrength != m_internalSettings->shadowStrength() ||
+            g_shadowColor != m_internalSettings->shadowColor()
+            )
         {
             // assign parameters
             g_shadowSize = m_internalSettings->shadowSize();
             g_shadowStrength = m_internalSettings->shadowStrength();
+            g_shadowColor = m_internalSettings->shadowColor();
             const int shadowOffset = qMax( 6*g_shadowSize/16, Metrics::Shadow_Overlap*2 );
 
             // create image
@@ -609,17 +616,14 @@ namespace Breeze
                 return color;
             };
 
-            auto c = client().data();
-            const QColor shadowColor( c->palette().color( QPalette::Shadow ) );
-
-            QRadialGradient radialGradient( g_shadowSize, g_shadowSize, g_shadowSize);
+            QRadialGradient radialGradient( g_shadowSize, g_shadowSize, g_shadowSize );
             for( int i = 0; i < 10; ++i )
             {
                 const qreal x( qreal( i )/9 );
-                radialGradient.setColorAt(x,  gradientStopColor(shadowColor, alpha(x)*g_shadowStrength));
+                radialGradient.setColorAt(x,  gradientStopColor( g_shadowColor, alpha(x)*g_shadowStrength ) );
             }
 
-            radialGradient.setColorAt(1, gradientStopColor( shadowColor, 0 ) );
+            radialGradient.setColorAt(1, gradientStopColor( g_shadowColor, 0 ) );
 
             // fill
             QPainter painter(&image);
@@ -628,7 +632,7 @@ namespace Breeze
 
             // contrast pixel
             painter.setBrush( Qt::NoBrush );
-            painter.setPen( gradientStopColor(shadowColor, g_shadowStrength) );
+            painter.setPen( gradientStopColor( g_shadowColor, g_shadowStrength ) );
             painter.setRenderHints(QPainter::Antialiasing );
             painter.drawRoundedRect( QRect( g_shadowSize-shadowOffset, g_shadowSize-shadowOffset, shadowOffset, shadowOffset ), 3, 3 );
             painter.end();

kdecoration/breezesettingsdata.kcfg

@@ -19,6 +19,10 @@
        <max>64</max>
     </entry>
 
+    <entry name="ShadowColor" type = "Color">
+       <default>0, 0, 0</default>
+    </entry>
+
     <!-- close button -->
     <entry name="OutlineCloseButton" type = "Bool">
         <default>true</default>

kdecoration/config/breezeconfigwidget.cpp

@@ -59,6 +59,7 @@ namespace Breeze
         // track shadows changes
         connect( m_ui.shadowSize, SIGNAL(valueChanged(int)), SLOT(updateChanged()) );
         connect( m_ui.shadowStrength, SIGNAL(valueChanged(int)), SLOT(updateChanged()) );
+        connect( m_ui.shadowColor, SIGNAL(changed(QColor)), SLOT(updateChanged()) );
 
         // track exception changes
         connect( m_ui.exceptions, SIGNAL(changed(bool)), SLOT(updateChanged()) );
@@ -85,6 +86,7 @@ namespace Breeze
         // load shadows
         m_ui.shadowSize->setValue( m_internalSettings->shadowSize() );
         m_ui.shadowStrength->setValue( qRound(qreal(m_internalSettings->shadowStrength()*100)/255 ) );
+        m_ui.shadowColor->setColor( m_internalSettings->shadowColor() );
 
         // load exceptions
         ExceptionList exceptions;
@@ -113,6 +115,7 @@ namespace Breeze
 
         m_internalSettings->setShadowSize( m_ui.shadowSize->value() );
         m_internalSettings->setShadowStrength( qRound( qreal(m_ui.shadowStrength->value()*255)/100 ) );
+        m_internalSettings->setShadowColor( m_ui.shadowColor->color() );
 
         // save configuration
         m_internalSettings->save();
@@ -160,6 +163,7 @@ namespace Breeze
 
         m_ui.shadowSize->setValue( m_internalSettings->shadowSize() );
         m_ui.shadowStrength->setValue( qRound(qreal(m_internalSettings->shadowStrength()*100)/255 ) );
+        m_ui.shadowColor->setColor( m_internalSettings->shadowColor() );
 
     }
 
@@ -186,6 +190,7 @@ namespace Breeze
         // shadows
         else if( m_ui.shadowSize->value() !=  m_internalSettings->shadowSize() ) modified = true;
         else if( qRound( qreal(m_ui.shadowStrength->value()*255)/100 ) != m_internalSettings->shadowStrength() ) modified = true;
+        else if( m_ui.shadowColor->color() != m_internalSettings->shadowColor() ) modified = true;
 
         // exceptions
         else if( m_ui.exceptions->isChanged() ) modified = true;

kdecoration/config/ui/breezeconfigurationui.ui

@@ -11,7 +11,16 @@
    </rect>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
-   <property name="margin">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
     <number>0</number>
    </property>
    <item>
@@ -225,33 +234,7 @@
       <attribute name="title">
        <string>Shadows</string>
       </attribute>
-      <layout class="QGridLayout" name="gridLayout_6">
-       <item row="1" column="1">
-        <widget class="QSpinBox" name="shadowStrength">
-         <property name="suffix">
-          <string>%</string>
-         </property>
-         <property name="minimum">
-          <number>10</number>
-         </property>
-         <property name="maximum">
-          <number>100</number>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="2">
-        <spacer name="horizontalSpacer_5">
-         <property name="orientation">
-          <enum>Qt::Horizontal</enum>
-         </property>
-         <property name="sizeHint" stdset="0">
-          <size>
-           <width>40</width>
-           <height>20</height>
-          </size>
-         </property>
-        </spacer>
-       </item>
+      <layout class="QGridLayout" name="gridLayout">
        <item row="0" column="0">
         <widget class="QLabel" name="label">
          <property name="text">
@@ -291,7 +274,46 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="0" colspan="3">
+       <item row="1" column="1">
+        <widget class="QSpinBox" name="shadowStrength">
+         <property name="suffix">
+          <string>%</string>
+         </property>
+         <property name="minimum">
+          <number>10</number>
+         </property>
+         <property name="maximum">
+          <number>100</number>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="2">
+        <spacer name="horizontalSpacer_5">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item row="2" column="0">
+        <widget class="QLabel" name="label_5">
+         <property name="text">
+          <string>Color:</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="1">
+        <widget class="KColorButton" name="shadowColor"/>
+       </item>
+       <item row="3" column="0" colspan="3">
         <spacer name="verticalSpacer_3">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
@@ -328,6 +350,11 @@
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>KColorButton</class>
+   <extends>QPushButton</extends>
+   <header>kcolorbutton.h</header>
+  </customwidget>
   <customwidget>
    <class>Breeze::ExceptionListWidget</class>
    <extends>QWidget</extends>