Index: plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.h
===================================================================
--- plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.h
+++ plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.h
@@ -84,7 +84,9 @@
     int m_lineHeight;
     bool m_displayHelpText;
     qreal m_mouseX;
-    bool m_isDown;
+    QPoint m_ev;
+    qreal m_width;
+    
     
     friend class KisShadeSelectorLineComboBox;
 
Index: plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.cpp
===================================================================
--- plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.cpp
+++ plugins/extensions/dockers/advancedcolorselector/kis_shade_selector_line.cpp
@@ -44,8 +44,10 @@
     setParam(0, 0, 0, 0, 0, 0);
     updateSettings();
     setMouseTracking(true);
-    m_mouseX=width()+14;
-    m_isDown=false;
+    m_mouseX=width()/2;
+  //  m_isDown=false;
+    m_ev.setX(0);
+    m_ev.setY(5);
 }
 
 KisShadeSelectorLine::KisShadeSelectorLine(qreal hueDelta, qreal satDelta, qreal valDelta,
@@ -58,8 +60,10 @@
 {
     setParam(hueDelta, satDelta, valDelta, hueShift, satShift, valShift);
     updateSettings();
-    m_mouseX=width()+14;
-    m_isDown=false;
+    m_mouseX=width()/2;
+    //m_isDown=false;
+    m_ev.setX(0);
+    m_ev.setY(5);
 }
 
 KisShadeSelectorLine::~KisShadeSelectorLine()
@@ -81,7 +85,7 @@
 {
     m_realColor = color;
     m_realColor.convertTo(m_parentProxy->colorSpace());
-    m_mouseX=width()+14;
+    m_mouseX=width()/2;
 
     update();
 }
@@ -160,7 +164,7 @@
         qreal saturation = qBound<qreal>(0., baseSaturation + (i * saturationStep) + m_saturationShift, 1.);
         qreal value = qBound<qreal>(0., baseValue + (i * valueStep) + m_valueShift, 1.);
        
-        if ((i<=5)&&(i>=-5))
+        if (qAbs(i) <= 5)
         {
             hue = baseHue;
             saturation=baseSaturation;
@@ -186,8 +190,10 @@
     wpainter.setPen(QColor(75,75,75));
     wpainter.drawRect(renderedImage.width()/2-4,0,8,renderedImage.height()-1);
     wpainter.setPen(QColor(175,175,175));
-    wpainter.drawRect(m_mouseX-5,0,10,renderedImage.height()-1);
+    m_ev.setX(qBound(5.0,m_mouseX,m_width-5));
+    wpainter.drawRect(m_ev.x()-5,0,10,renderedImage.height()-1);
     emit update();
+    m_width=width();
 
     if(m_displayHelpText) {
         QString helpText(i18n("delta h=%1 s=%2 v=%3 shift h=%4 s=%5 v=%6",
@@ -206,8 +212,9 @@
 {
     QSize m_old = e->oldSize();
     QSize m_new = e->size();       
-    int m_nWidth = m_new.QSize::width();
-    int m_oWidth = m_old.QSize::width();
+    int m_nWidth = m_new.width();
+    int m_oWidth = m_old.width();
+    m_width=width();
     m_mouseX = m_mouseX*m_nWidth/m_oWidth;
     
     
@@ -222,16 +229,19 @@
     m_parentProxy->showColorPreview();
     e->accept();
     m_mouseX=e->x();
-    m_isDown=true;
-
+    
+   
 }
 
 void KisShadeSelectorLine::mouseMoveEvent(QMouseEvent *e)
 {
-    KoColor color(Acs::pickColor(m_realPixelCache, e->pos()));     
-    m_parentProxy->updateColorPreview(color);
-    if(m_isDown==true){
+   
+    if (e->buttons() & Qt::LeftButton){
         m_mouseX=e->x();
+        m_ev.setX(qBound(5.0,m_mouseX,m_width-5));
+        m_ev.setY(5);
+        KoColor color(Acs::pickColor(m_realPixelCache, m_ev));     
+        m_parentProxy->updateColorPreview(color);
     }
 }
 
@@ -242,14 +252,16 @@
         return;
     }
 
-    if (!rect().contains(e->pos())) {
+  /*  if (!rect().contains(e->pos())) {
         e->accept();
         return;
     }
-    m_isDown=false;
-
-    KoColor color(Acs::pickColor(m_realPixelCache, e->pos()));
-
+    */
+    m_mouseX=e->x();
+    m_ev.setX(qBound(5.0,m_mouseX,m_width-5));
+    m_ev.setY(5);
+    KoColor color(Acs::pickColor(m_realPixelCache, m_ev));
+    m_parentProxy->updateColorPreview(color);
     Acs::ColorRole role = Acs::buttonToRole(e->button());
 
     KConfigGroup cfg =  KSharedConfig::openConfig()->group("advancedColorSelector");