anchor thin tooltips on their visual parents

BUG:447631

containment/package/contents/ui/applet/ParabolicArea.qml

@@ -61,10 +61,10 @@ Item {
 
         if (isParabolicEnabled) {
             if (root.isHorizontal){
-                appletItem.layouts.currentSpot = mouseX;
+                appletItem.layouts.currentSpot = Math.round(mouseX);
                 calculateParabolicScales(mouseX);
             } else{
-                appletItem.layouts.currentSpot = mouseY;
+                appletItem.layouts.currentSpot = Math.round(mouseY);
                 calculateParabolicScales(mouseY);
             }
         }
@@ -84,14 +84,14 @@ Item {
                 if (root.isHorizontal){
                     var step = Math.abs(appletItem.layouts.currentSpot-mouseX);
                     if (step >= appletItem.animations.hoverPixelSensitivity){
-                        appletItem.layouts.currentSpot = mouseX;
+                        appletItem.layouts.currentSpot = Math.round(mouseX);
                         calculateParabolicScales(mouseX);
                     }
                 }
                 else{
                     var step = Math.abs(appletItem.layouts.currentSpot-mouseY);
                     if (step >= appletItem.animations.hoverPixelSensitivity){
-                        appletItem.layouts.currentSpot = mouseY;
+                        appletItem.layouts.currentSpot = Math.round(mouseY);
                         calculateParabolicScales(mouseY);
                     }
                 }

containment/package/contents/ui/applet/TitleTooltipParent.qml

@@ -4,13 +4,16 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
-import QtQuick 2.0
+import QtQuick 2.7
 
 import org.kde.plasma.plasmoid 2.0
 import org.kde.plasma.core 2.0 as PlasmaCore
 
 Item{
     id: visual
+    //used from LatteCore.Dialog Tooltips in order to be anchored properly to their visual parent
+    signal anchoredTooltipPositionChanged();
+
     width: root.isVertical ?  thickness : size
     height: root.isVertical ? size : thickness
 
@@ -26,6 +29,12 @@ Item{
     //border.color: "green"
     //color: "transparent"
 
+    Connections {
+        target: appletItem.layouts
+        enabled: parabolic.isEnabled && appletItem.containsMouse
+        onCurrentSpotChanged: visual.anchoredTooltipPositionChanged();
+    }
+
     states:[
         State{
             name: "bottom"

declarativeimports/abilities/host/ThinTooltip.qml

@@ -11,6 +11,7 @@ import org.kde.plasma.plasmoid 2.0
 import org.kde.plasma.components 2.0 as PlasmaComponents
 import org.kde.plasma.core 2.0 as PlasmaCore
 
+import org.kde.latte.core 0.2 as LatteCore
 import org.kde.latte.abilities.definition 0.1 as AbilityDefinition
 
 AbilityDefinition.ThinTooltip {
@@ -108,7 +109,7 @@ AbilityDefinition.ThinTooltip {
         }
     }
 
-    PlasmaCore.Dialog{
+    LatteCore.Dialog{
         id: _tooltipDialog
         type: PlasmaCore.Dialog.Tooltip
         flags: Qt.WindowStaysOnTopHint | Qt.WindowDoesNotAcceptFocus | Qt.ToolTip

declarativeimports/abilities/items/BasicItem.qml

@@ -100,6 +100,13 @@ Item{
     readonly property bool isHorizontal: !isVertical
     readonly property bool isVertical: plasmoid.formFactor === PlasmaCore.Types.Vertical
     readonly property bool parabolicAreaContainsMouse: parabolicEventsAreaLoader.active && parabolicEventsAreaLoader.item.containsMouse
+    readonly property int parabolicAreaLastMousePos: {
+        if (parabolicEventsAreaLoader.active) {
+            return Math.round(plasmoid.formFactor === PlasmaCore.Types.Horizontal ? parabolicEventsAreaLoader.item.lastMouseX : parabolicEventsAreaLoader.lastMouseY);
+        }
+
+        return 0;
+    }
 
     readonly property int location: {
         if (plasmoid.location === PlasmaCore.Types.LeftEdge

declarativeimports/abilities/items/basicitem/TitleTooltipParent.qml

@@ -4,19 +4,28 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
-import QtQuick 2.0
+import QtQuick 2.7
 
 import org.kde.plasma.plasmoid 2.0
 import org.kde.plasma.core 2.0 as PlasmaCore
 
 Item{
     id: visual
+    //used from LatteCore.Dialog Tooltips in order to be anchored properly to their visual parent
+    signal anchoredTooltipPositionChanged();
+
     width: abilityItem.isVertical ?  thickness : size
     height: abilityItem.isVertical ? size : thickness
 
     property int size: 1
     property int thickness: 64
 
+    Connections {
+        target: abilityItem
+        enabled: abilityItem.abilities.parabolic.isEnabled && abilityItem.containsMouse
+        onParabolicAreaLastMousePosChanged: visual.anchoredTooltipPositionChanged();
+    }
+
     states:[
         State{
             name: "bottom"

declarativeimports/core/dialog.cpp

@@ -16,6 +16,7 @@ namespace Quick {
 Dialog::Dialog(QQuickItem *parent)
     : PlasmaQuick::Dialog(parent)
 {
+    connect(this, &PlasmaQuick::Dialog::visualParentChanged, this, &Dialog::onVisualParentChanged);
 }
 
 bool Dialog::containsMouse() const
@@ -66,6 +67,31 @@ int Dialog::appletsPopUpMargin() const
     return margin.isValid() ? margin.toInt() : -1;
 }
 
+void Dialog::onVisualParentChanged()
+{
+    // clear mode
+    for (auto &c : m_visualParentConnections) {
+        disconnect(c);
+    }
+
+    if (!visualParent() || !flags().testFlag(Qt::ToolTip) || !visualParent()->metaObject())  {
+        return;
+    }
+
+    bool hassignal = (visualParent()->metaObject()->indexOfSignal(QMetaObject::normalizedSignature("anchoredTooltipPositionChanged()")) != -1);
+
+    if (hassignal) {
+        m_visualParentConnections[0] = connect(visualParent(), SIGNAL(anchoredTooltipPositionChanged()) , this, SLOT(updateGeometry()));
+    }
+}
+
+void Dialog::updateGeometry()
+{
+    if (visualParent()) {
+        setPosition(popupPosition(visualParent(), size()));
+    }
+}
+
 void Dialog::updatePopUpEnabledBorders()
 {
     QRect appletslayoutgeometry = appletsLayoutGeometryFromContainment();

declarativeimports/core/dialog.h

@@ -47,6 +47,9 @@ private slots:
     void setContainsMouse(bool contains);
     void updatePopUpEnabledBorders();
 
+    void onVisualParentChanged();
+    void updateGeometry();
+
 private:
     bool isRespectingAppletsLayoutGeometry() const;
     QRect appletsLayoutGeometryFromContainment() const;
@@ -58,6 +61,7 @@ private:
 
     Plasma::Types::Location m_edge{Plasma::Types::BottomEdge};
 
+    std::array<QMetaObject::Connection, 2> m_visualParentConnections;
 
 };