[devicelock] Device lock for the homescreen.

src/qml/DeviceLock.qml

+import QtQuick 2.1
+import QtQuick.Controls 1.0
+import QtQuick.Controls.Nemo 1.0
+import QtQuick.Controls.Styles.Nemo 1.0
+import QtQuick.Layouts 1.0
+
+Item {
+    id: root
+    anchors.top: clock.bottom
+    anchors.bottom: parent.bottom
+    anchors.left: parent.left
+    anchors.right: parent.right
+    ColumnLayout {
+        anchors.fill: parent
+        spacing: 40
+        TextField {
+            id: lockCodeField
+            readOnly: true
+            echoMode: TextInput.PasswordEchoOnEdit
+        }
+
+        GridLayout {
+            height: parent.height
+            width: parent.width
+            columns: 3
+            Repeater {
+                model: ["1","2","3","4","5","6","7","8","9","Ca","0","OK"]
+                delegate:
+                Button {
+                    Layout.fillWidth: true
+                    text: modelData
+                    onClicked: {
+                        if (text !== "Ca" && text !== "OK") {
+                            lockCodeField.insert(lockCodeField.cursorPosition, text)
+                        } else {
+                            if (text === "OK") {
+                                if(deviceLock.checkCode(lockCodeField.text)) {
+                                    deviceLock.setState(0)
+                                    lockCodeField.text = ""
+                                } else {
+                                    lockCodeField.text = ""
+                                }
+                            } else if (text === "Ca"){
+                                lockCodeField.text = ""
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/qml/Lockscreen.qml

@@ -6,12 +6,20 @@ Image {
     visible: LipstickSettings.lockscreenVisible
 
     LockscreenClock {
+        id: clock
         anchors {
             top: parent.top
             left: parent.left
             right: parent.right
         }
     }
+    DeviceLock {
+        id: deviceLockUI
+        anchors.fill: parent
+        visible: deviceLock.state === 1
+        z: 201
+    }
+
     MouseArea {
         anchors.fill: parent
     }

src/qml/compositor.qml

@@ -133,6 +133,7 @@ Compositor {
         property real lockThreshold: 0.25
         property int lockscreenX
         property int lockscreenY
+        enabled: deviceLock.state === 0
 
         onGestureStarted: {
             swipeAnimation.stop()

src/src.pro

@@ -35,7 +35,8 @@ qml.files = qml/MainScreen.qml \
     qml/BatteryPanel.qml \
     qml/CommonPanel.qml \
     qml/ShutdownScreen.qml \
-    qml/GlacierRotation.qml
+    qml/GlacierRotation.qml \
+    qml/DeviceLock.qml
 
 qmlcompositor.path = /usr/share/lipstick-glacier-home-qt5/qml/compositor
 qmlcompositor.files = qml/compositor/WindowWrapperMystic.qml \
@@ -107,6 +108,7 @@ OTHER_FILES += qml/*.qml \
     qml/BatteryPanel.qml \
     qml/CommonPanel.qml \
     qml/ShutdownScreen.qml \
-    qml/GlacierRotation.qml
+    qml/GlacierRotation.qml \
+    qml/DeviceLock.qml