fix #713,solid background for maximized windows

--this works similar with transparency with no-maximized
windows feature but on reverse. e.g. transparency for
non-maximized windows and solidness for maximized ones
--opacity to 1 when applet is active
--when the user uses a semi transparent panel for
un-maximized active windows and the user activates
a pop up for an applet a better visual effect is the
panel to not have any transparency
--improve translation strings and options order

containment/package/contents/config/main.xml

@@ -72,6 +72,9 @@
     <entry name="backgroundOnlyOnMaximized" type="Bool">
       <default>false</default>
     </entry>
+    <entry name="solidBackgroundForMaximized" type="Bool">
+      <default>false</default>
+    </entry>
     <entry name="splitterPosition" type="Int">
       <default>-1</default>
     </entry>

containment/package/contents/ui/PanelBox.qml

@@ -257,7 +257,9 @@ Item{
             anchors.bottomMargin: Latte.WindowSystem.compositingActive ? shadowsSvgItem.margins.bottom - bottomIncreaser : 0
             anchors.fill:parent
 
-            opacity: root.solidPanel ?  1 : plasmoid.configuration.panelTransparency / 100
+            opacity: root.solidPanel || root.forceSolidPanel
+                     || (root.hasExpandedApplet && root.zoomFactor===1 && plasmoid.configuration.panelSize===100) ?
+                         1 : plasmoid.configuration.panelTransparency / 100
 
             property rect efGeometry: Qt.rect(-1,-1,0,0)
 

containment/package/contents/ui/main.qml

@@ -68,6 +68,8 @@ DragDrop.DropArea {
     }
 
     property bool blurEnabled: plasmoid.configuration.blurEnabled && !root.forceTransparentPanel
+                               || (hasExpandedApplet && zoomFactor===1 && plasmoid.configuration.panelSize===100)
+
     property bool confirmedDragEntered: false
     property bool containsOnlyPlasmaTasks: false //this is flag to indicate when from tasks only a plasma based one is found
     property bool dockContainsMouse: dock && dock.visibility ? dock.visibility.containsMouse : false
@@ -75,6 +77,7 @@ DragDrop.DropArea {
     property bool disablePanelShadowMaximized: plasmoid.configuration.disablePanelShadowForMaximized
     property bool drawShadowsExternal: panelShadowsActive && behaveAsPlasmaPanel
     property bool editMode: plasmoid.userConfiguring
+    property bool forceSolidPanel:  plasmoid.configuration.solidBackgroundForMaximized && windowsModel.hasMaximizedWindow
     property bool forceTransparentPanel: root.backgroundOnlyOnMaximized && !windowsModel.hasMaximizedWindow && Latte.WindowSystem.compositingActive
                                          && !(hasExpandedApplet && zoomFactor===1 && plasmoid.configuration.panelSize===100)
 
@@ -99,6 +102,7 @@ DragDrop.DropArea {
     property bool onlyAddingStarup: true //is used for the initialization phase in startup where there arent removals, this variable provides a way to grow icon size
     property bool shrinkThickMargins: plasmoid.configuration.shrinkThickMargins
     property bool solidPanel: Latte.WindowSystem.compositingActive ? plasmoid.configuration.solidPanel : true
+
     //FIXME: possibly this is going to be the default behavior, this user choice
     //has been dropped from the Dock Configuration Window
     //property bool smallAutomaticIconJumps: plasmoid.configuration.smallAutomaticIconJumps
@@ -1319,7 +1323,7 @@ DragDrop.DropArea {
     Loader{
         id: windowsModel
 
-        active: (plasmoid.configuration.backgroundOnlyOnMaximized || root.disablePanelShadowMaximized) && dock
+        active: (plasmoid.configuration.backgroundOnlyOnMaximized || root.disablePanelShadowMaximized || plasmoid.configuration.solidBackgroundForMaximized) && dock
 
         property bool hasMaximizedWindow: active && item ? item.maximizedWindowOnScreen : false
         sourceComponent: WindowsModel{}

shell/package/contents/configuration/TweaksConfig.qml

@@ -84,10 +84,24 @@ PlasmaComponents.Page {
                 }
             }
 
+            PlasmaComponents.CheckBox {
+                id: solidForMaximizedChk
+                Layout.leftMargin: units.smallSpacing * 2
+                text: i18n("Force solid background for maximized windows")
+                checked: plasmoid.configuration.solidBackgroundForMaximized
+                tooltip: i18n("The panel background removes its transparency setting \n when there is a maximized window")
+
+                onClicked: {
+                    plasmoid.configuration.solidBackgroundForMaximized = checked;
+                  //  plasmoid.configuration.disablePanelShadowForMaximized = false;
+                  //  hideShadowsOnMaximizedChk.checked = false;
+                }
+            }
+
             PlasmaComponents.CheckBox {
                 id: onlyOnMaximizedChk
                 Layout.leftMargin: units.smallSpacing * 2
-                text: i18n("Show background only for maximized windows")
+                text: i18n("Hide background for not maximized windows")
                 checked: plasmoid.configuration.backgroundOnlyOnMaximized
                 tooltip: i18n("The panel background becomes transparent but is shown \nwhen there is a maximized window")