Welcome the all new EventsSink infrastructure

--each applet has now its own Sunk events to handle,
and as such each applet can now have different paddings
and that does not create any issues or missing events

app/main.cpp

@@ -169,6 +169,11 @@ int main(int argc, char **argv)
     filterDebugInputMask.setDescription(QStringLiteral("Show visual window indicators for calculated input mask."));
     filterDebugInputMask.setFlags(QCommandLineOption::HiddenFromHelp);
     parser.addOption(filterDebugInputMask);
+
+    QCommandLineOption filterDebugEventSinkMask(QStringList() << QStringLiteral("events-sink"));
+    filterDebugEventSinkMask.setDescription(QStringLiteral("Show visual indicators for areas of EventsSink."));
+    filterDebugEventSinkMask.setFlags(QCommandLineOption::HiddenFromHelp);
+    parser.addOption(filterDebugEventSinkMask);
     //! END: Hidden options
 
     parser.process(app);

containment/package/contents/ui/abilities/Debug.qml

@@ -24,6 +24,7 @@ import org.kde.latte.abilities.definition 0.1 as AbilityDefinition
 import org.kde.latte.abilities.host 0.1 as AbilityHost
 
 AbilityHost.Debug {
+    eventsSinkEnabled: Qt.application.arguments.indexOf("--events-sink")>=0
     graphicsEnabled: Qt.application.arguments.indexOf("--graphics")>=0
     inputMaskEnabled: Qt.application.arguments.indexOf("--input")>=0
     layouterEnabled: Qt.application.arguments.indexOf("--layouter")>=0

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

@@ -0,0 +1,127 @@
+/*
+*  Copyright 2020  Michail Vourlakos <mvourlakos@gmail.com>
+*
+*  This file is part of Latte-Dock
+*
+*  Latte-Dock is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License as
+*  published by the Free Software Foundation; either version 2 of
+*  the License, or (at your option) any later version.
+*
+*  Latte-Dock is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import QtQuick 2.7
+
+import org.kde.plasma.core 2.0 as PlasmaCore
+import org.kde.latte.core 0.2 as LatteCore
+
+Item {
+    property Item destination: null
+
+    readonly property int headThickness: appletItem.metrics.margin.thickness
+    readonly property int tailThickness: destination ? destination.tailThicknessMargin : headThickness
+    readonly property int lengthPadding: {
+        if ( (root.panelAlignment === LatteCore.Types.Justify && appletItem.firstChildOfStartLayout)
+            || (root.panelAlignment === LatteCore.Types.Justify && appletItem.lastChildOfEndLayout)
+            || (root.panelAlignment !== LatteCore.Types.Justify && appletItem.firstChildOfMainLayout)
+            || (root.panelAlignment !== LatteCore.Types.Justify && appletItem.lastChildOfMainLayout)) {
+            //! Fitts Law on corners
+            return appletItem.lengthAppletFullMargin;
+        }
+
+        return appletItem.lengthAppletPadding;
+    }
+
+    readonly property bool active: parent ? parent.active : false
+
+    Loader{
+        anchors.fill: parent
+        active: appletItem.debug.eventsSinkEnabled && active
+
+        sourceComponent: Rectangle {
+            anchors.fill: parent
+            color: "yellow"
+            opacity: 0.2
+            visible: root.latteView && root.latteView.sink.destinationItem === destination
+        }
+    }
+
+    EventsSinkOriginArea {
+        id: topArea
+        anchors.bottom: parent.top
+        anchors.bottomMargin: 1
+        anchors.horizontalCenter: parent.horizontalCenter
+
+        width: plasmoid.formFactor === PlasmaCore.Types.Horizontal ? destination.width + 2 * lengthPadding : destination.width
+        height: {
+            if (plasmoid.formFactor === PlasmaCore.Types.Vertical) {
+                return lengthPadding;
+            } else if (plasmoid.location === PlasmaCore.Types.TopEdge) {
+                return tailThickness;
+            } else {
+                return headThickness;
+            }
+        }
+    }
+
+    EventsSinkOriginArea {
+        id: bottomArea
+        anchors.top: parent.bottom
+        anchors.topMargin: 1
+        anchors.horizontalCenter: parent.horizontalCenter
+
+        width: plasmoid.formFactor === PlasmaCore.Types.Horizontal ? destination.width + 2 * lengthPadding : parent.width
+        height: {
+            if (plasmoid.formFactor === PlasmaCore.Types.Vertical) {
+                return lengthPadding;
+            } else if (plasmoid.location === PlasmaCore.Types.BottomEdge) {
+                return tailThickness;
+            } else {
+                return headThickness;
+            }
+        }
+    }
+
+    EventsSinkOriginArea {
+        id: leftArea
+        anchors.right: parent.left
+        anchors.rightMargin: 1
+        anchors.verticalCenter: parent.verticalCenter
+
+        height: plasmoid.formFactor === PlasmaCore.Types.Horizontal ? parent.height : destination.height + 2 * lengthPadding
+        width: {
+            if (plasmoid.formFactor === PlasmaCore.Types.Horizontal) {
+                return lengthPadding;
+            } else if (plasmoid.location === PlasmaCore.Types.LeftEdge) {
+                return tailThickness;
+            } else {
+                return headThickness;
+            }
+        }
+    }
+
+    EventsSinkOriginArea {
+        id: rightArea
+        anchors.left: parent.right
+        anchors.leftMargin: 1
+        anchors.verticalCenter: parent.verticalCenter
+
+        height: plasmoid.formFactor === PlasmaCore.Types.Horizontal ? parent.height : destination.height + 2 * lengthPadding
+        width: {
+            if (plasmoid.formFactor === PlasmaCore.Types.Horizontal) {
+                return lengthPadding;
+            } else if (plasmoid.location === PlasmaCore.Types.RightEdge) {
+                return tailThickness;
+            } else {
+                return headThickness;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,42 @@
+/*
+*  Copyright 2020  Michail Vourlakos <mvourlakos@gmail.com>
+*
+*  This file is part of Latte-Dock
+*
+*  Latte-Dock is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License as
+*  published by the Free Software Foundation; either version 2 of
+*  the License, or (at your option) any later version.
+*
+*  Latte-Dock is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import QtQuick 2.7
+
+MouseArea {
+    id: __destinationArea
+    enabled: visible
+    hoverEnabled: true
+    visible: root.latteView && root.latteView.sink.originItem !== __destinationArea
+
+    onEntered: {
+        root.latteView.sink.setSink(__destinationArea, destination)
+    }
+
+    Loader{
+        anchors.fill: parent
+        active: appletItem.debug.eventsSinkEnabled && active
+
+        sourceComponent: Rectangle {
+            anchors.fill: parent
+            color: "red"
+            opacity: 0.2
+        }
+    }
+}

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

@@ -473,6 +473,22 @@ Item{
         ]
     }
 
+    //! EventsSink
+
+    Loader {
+        id: eventsSinkLoader
+        anchors.fill: _wrapperContainer
+        active: (appletItem.lockZoom || !appletItem.parabolic.isEnabled || !appletItem.parabolicEffectIsSupported)
+                && !communicator.parabolicEffectIsSupported
+                && !isSeparator
+                && !isSpacer
+
+        sourceComponent: EventsSink {
+            destination: _wrapperContainer
+        }
+    }
+
+    //! InternalViewSplitter
     Loader{
         anchors.fill: _wrapperContainer
         active: appletItem.isInternalViewSplitter && root.inConfigureAppletsMode

declarativeimports/abilities/client/Debug.qml

@@ -24,6 +24,7 @@ import org.kde.latte.abilities.definition 0.1 as AbilityDefinition
 AbilityDefinition.Debug {
     property Item bridge: null
 
+    eventsSinkEnabled: ref.debug.eventsSinkEnabled
     graphicsEnabled: ref.debug.graphicsEnabled
     inputMaskEnabled: ref.debug.inputMaskEnabled
     layouterEnabled: ref.debug.layouterEnabled

declarativeimports/abilities/definition/Debug.qml

@@ -20,6 +20,7 @@
 import QtQuick 2.0
 
 Item {
+    property bool eventsSinkEnabled: false
     property bool graphicsEnabled: false
     property bool inputMaskEnabled: false
     property bool layouterEnabled: false