stub for the task manager

containments/taskpanel/package/contents/ui/TaskSwitcher.qml

+/*
+ *   Copyright 2015 Marco Martin <notmart@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as
+ *   published by the Free Software Foundation; either version 2, or
+ *   (at your option) any later version.
+ *
+ *   This program 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 Library General Public License for more details
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+import QtQuick 2.0
+import QtQuick.Layouts 1.1
+import QtQuick.Window 2.2
+import org.kde.plasma.core 2.0 as PlasmaCore
+import org.kde.plasma.components 2.0 as PlasmaComponents
+
+Window {
+    id: window
+
+    visible: false
+    width: Screen.width
+    height: Screen.height
+    property int offset: 0
+    property int overShoot: units.gridUnit * 2
+
+    color: Qt.rgba(0, 0, 0, 0.6 * (Math.min(tasksView.contentY + window.height, window.height) / window.height))
+
+    function show() {
+        visible = true;
+        scrollAnim.to = 0;
+        scrollAnim.running = true;
+    }
+    function hide() {
+        scrollAnim.to = -tasksView.headerItem.height;
+        scrollAnim.running = true;
+    }
+
+    SequentialAnimation {
+        id: scrollAnim
+        property alias to: internalAnim.to
+        ScriptAction {
+            script: window.visible = true;
+        }
+        NumberAnimation {
+            id: internalAnim
+            target: tasksView
+            properties: "contentY"
+            duration: units.longDuration
+            easing.type: Easing.InOutQuad
+        }
+        ScriptAction {
+            script: {
+                if (tasksView.contentY <= -tasksView.headerItem.height) {
+                    window.visible = false;
+                }
+            }
+        }
+    }
+    GridView {
+        id: tasksView
+        width: window.width
+        height: window.height
+        cellWidth: window.width/2
+        cellHeight: window.height/2
+        onFlickingChanged: {
+            if (!draggingVertically && contentY < -headerItem.height + window.height) {
+                scrollAnim.to = Math.round(contentY/window.height) * window.height
+                scrollAnim.running = true;
+            }
+        }
+        onDraggingVerticallyChanged: {
+            if (draggingVertically) {
+                return;
+            }
+
+            //manage separately the first page, the lockscreen
+            //scrolling down
+            if (verticalVelocity > 0 && contentY < -headerItem.height + window.height &&
+                contentY > (-headerItem.height + window.height/6)) {
+                show();
+                return;
+
+            //scrolling up
+            } else if (verticalVelocity < 0 && contentY < -headerItem.height + window.height &&
+                contentY < (-headerItem.height + window.height/6*5)) {
+                hide();
+                return;
+            }
+
+            if (contentY < 0) {
+                show();
+            }
+        }
+
+        model: 10
+        header: Item {
+            width: window.width
+            height: window.height
+        }
+        delegate: Item {
+            width: window.width/2
+            height: window.height/2
+            Rectangle {
+                anchors {
+                    fill: parent
+                    margins: units.gridUnit
+                }
+                radius: units.gridUnit
+                opacity: 0.8
+                PlasmaComponents.Label {
+                    anchors {
+                        bottom: parent.bottom
+                        horizontalCenter: parent.horizontalCenter
+                    }
+                    text: "Task " + modelData
+                }
+            }
+        }
+    }
+}

containments/taskpanel/package/contents/ui/main.qml

@@ -24,39 +24,56 @@ import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.plasma.components 2.0 as PlasmaComponents
 import org.kde.kquickcontrolsaddons 2.0
 
-Rectangle {
-    anchors.fill: parent
-    //TODO: decide what color we want applets
-    color: theme.backgroundColor
-
+PlasmaCore.ColorScope {
+    id: root
     width: 600
-    height: 40
-
-    property Item toolBox
-    
-    PlasmaComponents.ToolButton {
-        id: showDesktopButton
-        height: parent.height
-        width: height
-        anchors.horizontalCenter: parent.horizontalCenter
-        iconSource: "go-home"
-        checkable: true
-        onCheckedChanged: {
-            plasmoid.nativeInterface.showDesktop = checked;
+    height: 480
+    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
+
+    TaskSwitcher {
+        id: taskSwitcher
+    }
+    Rectangle {
+        anchors.fill: parent
+        color: root.backgroundColor
+
+        width: 600
+        height: 40
+
+        property Item toolBox
+
+        Button {
+            anchors.left: parent.left
+            height: parent.height
+            width: parent.width/3
+            iconSource: "applications-other"
+            onClicked: taskSwitcher.visible ? taskSwitcher.hide() : taskSwitcher.show();
         }
-        Connections {
-            target: plasmoid.nativeInterface
-            onShowingDesktopChanged: {
-                showDesktopButton.checked = plasmoid.nativeInterface.showDesktop;
+
+        Button {
+            id: showDesktopButton
+            height: parent.height
+            width: parent.width/3
+            anchors.horizontalCenter: parent.horizontalCenter
+            iconSource: "go-home"
+            checkable: true
+            onCheckedChanged: {print (checked)
+                plasmoid.nativeInterface.showDesktop = checked;
+            }
+            Connections {
+                target: plasmoid.nativeInterface
+                onShowingDesktopChanged: {
+                    showDesktopButton.checked = plasmoid.nativeInterface.showDesktop;
+                }
             }
         }
-    }
 
-    PlasmaComponents.ToolButton {
-        height: parent.height
-        width: height
-        anchors.right: parent.right
-        iconSource: "window-close"
-        onClicked: plasmoid.nativeInterface.executeScript("close");
+        Button {
+            height: parent.height
+            width: parent.width/3
+            anchors.right: parent.right
+            iconSource: "window-close"
+            onClicked: plasmoid.nativeInterface.executeScript("close");
+        }
     }
 }