improve how config window size is calculated

app/view/settings/primaryconfigview.cpp

@@ -142,6 +142,9 @@ void PrimaryConfigView::init()
 
     updateEnabledBorders();
 
+    int currentScrId = m_latteView->positioner()->currentScreenId();
+    m_availableScreenGeometry = m_corona->availableScreenRect(currentScrId);
+
     auto source = QUrl::fromLocalFile(m_latteView->containment()->corona()->kPackage().filePath(tempFilePath));
     setSource(source);
     syncGeometry();
@@ -177,6 +180,11 @@ void PrimaryConfigView::deleteSecondaryWindow()
     }
 }
 
+QRect PrimaryConfigView::availableScreenGeometry() const
+{
+    return m_availableScreenGeometry;
+}
+
 QRect PrimaryConfigView::geometryWhenVisible() const
 {
     return m_geometryWhenVisible;

app/view/settings/primaryconfigview.h

@@ -70,6 +70,8 @@ class PrimaryConfigView : public PlasmaQuick::ConfigView
 
     Q_PROPERTY(int complexity READ complexity WRITE setComplexity NOTIFY complexityChanged)
 
+    Q_PROPERTY(QRect availableScreenGeometry READ availableScreenGeometry NOTIFY availableScreenGeometryChanged)
+
     Q_PROPERTY(Plasma::FrameSvg::EnabledBorders enabledBorders READ enabledBorders NOTIFY enabledBordersChanged)
 
 public:
@@ -92,6 +94,7 @@ public:
     int complexity() const;
     void setComplexity(int complexity);
 
+    QRect availableScreenGeometry() const;
     QRect geometryWhenVisible() const;
 
     Plasma::FrameSvg::EnabledBorders enabledBorders() const;
@@ -105,6 +108,7 @@ public slots:
     Q_INVOKABLE void updateLaunchersForGroup(int groupInt);
 
 signals:
+    void availableScreenGeometryChanged();
     void complexityChanged();
     void enabledBordersChanged();
     void raiseDocksTemporaryChanged();
@@ -144,6 +148,7 @@ private:
     Latte::Types::Visibility m_originalMode{Latte::Types::DodgeActive};
     Latte::Types::SettingsComplexity m_complexity{Latte::Types::BasicSettings};
 
+    QRect m_availableScreenGeometry;
     QRect m_geometryWhenVisible;
 
     QPointer<Latte::View> m_latteView;

shell/package/contents/configuration/LatteDockConfiguration.qml

@@ -54,8 +54,8 @@ FocusScope {
     //!    we use 100px. or 50px. in order to give space for othe views to be shown and to have also
     //!    some space around the settings window
     property int maxHeight: plasmoid.formFactor === PlasmaCore.Types.Horizontal ?
-                                latteView.screenGeometry.height - latteView.editThickness - 64 :
-                                latteView.height - 50
+                                viewConfig.availableScreenGeometry.height - (latteView.editThickness - latteView.normalThickness) - 16 :
+                                viewConfig.availableScreenGeometry.height - 16
     property int maxWidth: 0.6 * latteView.screenGeometry.width
 
     //! propose size based on font size