AdwaitaPopOver: better sizing and position

Author: grulja

app/simple/AdwaitaPopOver.qml

@@ -71,7 +71,7 @@ FocusScope {
         radius: units.smallSpacing
         Rectangle {
             z: -1
-            y: -units.largeSpacing - 1
+            y: -units.smallSpacing - 1
             antialiasing: true
             border {
                 width: 1
@@ -85,7 +85,7 @@ FocusScope {
         }
         Rectangle {
             color: palette.window
-            y: -units.largeSpacing + 1
+            y: -units.smallSpacing + 1
             anchors.horizontalCenter: parent.horizontalCenter
             width: units.gridUnit
             height: units.gridUnit

app/views/ImageDetails.qml

@@ -246,7 +246,7 @@ Item {
                                         anchors {
                                             horizontalCenter: parent.horizontalCenter
                                             top: parent.bottom
-                                            topMargin: units.largeSpacing + opacity * Math.round(units.gridUnit * 1.5)
+                                            topMargin: units.smallSpacing + opacity * units.gridUnit
                                         }
 
                                         onOpenChanged: {
@@ -368,7 +368,7 @@ Item {
                                         anchors {
                                             horizontalCenter: parent.horizontalCenter
                                             top: parent.bottom
-                                            topMargin: units.largeSpacing + opacity * Math.round(units.gridUnit * 1.5)
+                                            topMargin: units.smallSpacing + opacity * units.gridUnit
                                         }
 
                                         onOpenChanged: {