Add lock to encrypted messages

resources/qml/EncryptionIndicator.qml

@@ -0,0 +1,30 @@
+import QtQuick 2.5
+import QtQuick.Controls 2.5
+import QtGraphicalEffects 1.0
+import com.github.nheko 1.0
+
+Rectangle {
+	id: indicator
+	color: "transparent"
+	width: 16
+	height: 16
+	ToolTip.visible: ma.containsMouse && indicator.visible
+	ToolTip.text: qsTr("Encrypted")
+	MouseArea{
+		id: ma
+		anchors.fill: parent
+		hoverEnabled: true
+	}
+
+	Image {
+		id: stateImg
+		anchors.fill: parent
+		source: "qrc:/icons/icons/ui/lock.png"
+	}
+	ColorOverlay {
+		anchors.fill: stateImg
+		source: stateImg
+		color: colors.buttonText
+	}
+}
+

resources/qml/TimelineView.qml

@@ -124,6 +124,12 @@ Rectangle {
 				Layout.preferredHeight: 16
 			}
 
+			EncryptionIndicator {
+				visible: model.isEncrypted
+				Layout.alignment: Qt.AlignRight | Qt.AlignTop
+				Layout.preferredHeight: 16
+			}
+
 			Button {
 				Layout.alignment: Qt.AlignRight | Qt.AlignTop
 				id: replyButton

resources/res.qrc

@@ -118,6 +118,7 @@
         <file>qml/TimelineView.qml</file>
         <file>qml/Avatar.qml</file>
         <file>qml/StatusIndicator.qml</file>
+        <file>qml/EncryptionIndicator.qml</file>
         <file>qml/delegates/TextMessage.qml</file>
         <file>qml/delegates/NoticeMessage.qml</file>
         <file>qml/delegates/ImageMessage.qml</file>

src/timeline2/TimelineModel.cpp

@@ -293,6 +293,7 @@ TimelineModel::roleNames() const
           {ProportionalHeight, "proportionalHeight"},
           {Id, "id"},
           {State, "state"},
+          {IsEncrypted, "isEncrypted"},
         };
 }
 int
@@ -391,6 +392,11 @@ TimelineModel::data(const QModelIndex &index, int role) const
                         return qml_mtx_events::Read;
                 else
                         return qml_mtx_events::Received;
+        case IsEncrypted: {
+                auto tempEvent = events[id];
+                return boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(
+                         &tempEvent) != nullptr;
+        }
         default:
                 return QVariant();
         }

src/timeline2/TimelineModel.h

@@ -132,6 +132,7 @@ public:
                 ProportionalHeight,
                 Id,
                 State,
+                IsEncrypted,
         };
 
         QHash<int, QByteArray> roleNames() const override;