Add basic room upgrade support.

Add full screen image view.
Fix a bug in image provider.

imports/Spectral/Component/Avatar.qml

@@ -36,8 +36,8 @@ Item {
         visible: !realSource || image.status != Image.Ready
 
         radius: height / 2
-
         color: stringToColor(hint)
+        antialiasing: true
 
         Label {
             anchors.centerIn: parent

imports/Spectral/Component/FullScreenImage.qml

@@ -0,0 +1,41 @@
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+
+ApplicationWindow {
+    property url imageUrl
+    property int sourceWidth
+    property int sourceHeight
+
+    id: root
+
+    flags: Qt.FramelessWindowHint | Qt.WA_TranslucentBackground
+    visible: true
+    visibility: Qt.WindowFullScreen
+
+    title: "Image View - " + imageUrl
+
+    color: "#BB000000"
+
+    Image {
+        anchors.centerIn: parent
+
+        sourceSize.width: root.sourceWidth
+        sourceSize.height: root.sourceHeight
+        source: imageUrl
+    }
+
+    ItemDelegate {
+        anchors.top: parent.top
+        anchors.right: parent.right
+
+        width: 64
+        height: 64
+
+        contentItem: MaterialIcon {
+            icon: "\ue5cd"
+            color: "white"
+        }
+
+        onClicked: root.close()
+    }
+}

imports/Spectral/Component/Timeline/ImageDelegate.qml

@@ -85,8 +85,11 @@ ColumnLayout {
             source: "image://mxc/" +
                     (content.info && content.info.thumbnail_info ?
                          content.thumbnailMediaId : content.mediaId)
-            sourceSize.width: messageListView.width * 0.6
-            sourceSize.height: messageListView.height
+
+            sourceSize.width: 720
+            sourceSize.height: 720
+
+            fillMode: Image.PreserveAspectCrop
 
             layer.enabled: true
             layer.effect: OpacityMask {
@@ -97,6 +100,16 @@ ColumnLayout {
                 }
             }
 
+            Component {
+                id: fullScreenImage
+
+                FullScreenImage {
+                    imageUrl: "image://mxc/" + content.mediaId
+                    sourceWidth: content.info.w
+                    sourceHeight: content.info.h
+                }
+            }
+
             Rectangle {
                 anchors.fill: parent
 
@@ -113,6 +126,11 @@ ColumnLayout {
 
                 id: messageMouseArea
 
+                onPrimaryClicked: {
+                    var window = fullScreenImage.createObject()
+                    window.show()
+                }
+
                 onSecondaryClicked: messageContextMenu.popup()
 
                 Menu {
@@ -126,16 +144,19 @@ ColumnLayout {
                             sourceDialog.open()
                         }
                     }
+
                     MenuItem {
                         text: "Open Externally"
 
                         onTriggered: downloadAndOpen()
                     }
+
                     MenuItem {
                         text: "Save As"
 
                         onTriggered: saveFileAs()
                     }
+
                     MenuItem {
                         text: "Reply"
 
@@ -147,6 +168,7 @@ ColumnLayout {
                             roomPanelInput.focus()
                         }
                     }
+
                     MenuItem {
                         text: "Redact"
 

imports/Spectral/Component/qmldir

@@ -7,3 +7,4 @@ AutoListView 2.0 AutoListView.qml
 AutoTextField 2.0 AutoTextField.qml
 SplitView 2.0 SplitView.qml
 Avatar 2.0 Avatar.qml
+FullScreenImage 2.0 FullScreenImage.qml

imports/Spectral/Panel/RoomDrawer.qml

@@ -271,6 +271,102 @@ Drawer {
                 }
             }
 
+            Control {
+                Layout.fillWidth: true
+
+                visible: room ? room.predecessorId : false
+
+                padding: 8
+
+                contentItem: RowLayout {
+                    MaterialIcon {
+                        Layout.preferredWidth: 48
+                        Layout.preferredHeight: 48
+
+                        icon: "\ue8d4"
+                    }
+
+                    ColumnLayout {
+                        Layout.fillWidth: true
+
+                        spacing: 0
+
+                        Label {
+                            Layout.fillWidth: true
+
+                            font.bold: true
+                            color: MPalette.foreground
+                            text: "This room is a continuation of another conversation."
+                        }
+
+                        Label {
+                            Layout.fillWidth: true
+
+                            color: MPalette.lighter
+                            text: "Click here to see older messages."
+                        }
+                    }
+                }
+
+                background: Rectangle {
+                    color: MPalette.banner
+
+                    RippleEffect {
+                        anchors.fill: parent
+
+                        onClicked: roomListForm.enteredRoom = spectralController.connection.room(room.predecessorId)
+                    }
+                }
+            }
+
+            Control {
+                Layout.fillWidth: true
+
+                visible: room ? room.successorId : false
+
+                padding: 8
+
+                contentItem: RowLayout {
+                    MaterialIcon {
+                        Layout.preferredWidth: 48
+                        Layout.preferredHeight: 48
+
+                        icon: "\ue8d4"
+                    }
+
+                    ColumnLayout {
+                        Layout.fillWidth: true
+
+                        spacing: 0
+
+                        Label {
+                            Layout.fillWidth: true
+
+                            font.bold: true
+                            color: MPalette.foreground
+                            text: "This room has been replaced and is no longer active."
+                        }
+
+                        Label {
+                            Layout.fillWidth: true
+
+                            color: MPalette.lighter
+                            text: "The conversation continues here."
+                        }
+                    }
+                }
+
+                background: Rectangle {
+                    color: MPalette.banner
+
+                    RippleEffect {
+                        anchors.fill: parent
+
+                        onClicked: roomListForm.enteredRoom = spectralController.connection.room(room.successorId)
+                    }
+                }
+            }
+
             MenuSeparator {
                 Layout.fillWidth: true
             }

imports/Spectral/Panel/RoomListPanel.qml

@@ -60,6 +60,9 @@ Item {
         ]
 
         filters: [
+            ExpressionFilter {
+                expression: joinState != "upgraded"
+            },
             RegExpFilter {
                 roleName: "name"
                 pattern: searchField.text
@@ -272,7 +275,7 @@ Item {
                 }
 
                 Rectangle {
-                    width: unreadCount > 0 ? 4 : 0
+                    width: unreadCount >= 0 ? 4 : 0
                     height: parent.height
 
                     color: Material.accent

res.qrc

@@ -43,5 +43,6 @@
         <file>imports/Spectral/Component/Avatar.qml</file>
         <file>imports/Spectral/Setting/Palette.qml</file>
         <file>imports/Spectral/Component/Timeline/FileDelegate.qml</file>
+        <file>imports/Spectral/Component/FullScreenImage.qml</file>
     </qresource>
 </RCC>

src/roomlistmodel.cpp

@@ -195,6 +195,11 @@ QVariant RoomListModel::data(const QModelIndex& index, int role) const {
     return room->lastEvent();
   if (role == LastActiveTimeRole)
     return room->lastActiveTime();
+  if (role == JoinStateRole) {
+    if (!room->successorId().isEmpty())
+      return QStringLiteral("upgraded");
+    return toCString(room->joinState());
+  }
   if (role == CurrentRoomRole)
     return QVariant::fromValue(room);
   return QVariant();
@@ -231,6 +236,7 @@ QHash<int, QByteArray> RoomListModel::roleNames() const {
   roles[HighlightCountRole] = "highlightCount";
   roles[LastEventRole] = "lastEvent";
   roles[LastActiveTimeRole] = "lastActiveTime";
+  roles[JoinStateRole] = "joinState";
   roles[CurrentRoomRole] = "currentRoom";
   return roles;
 }

src/roomlistmodel.h

@@ -39,6 +39,7 @@ class RoomListModel : public QAbstractListModel {
     HighlightCountRole,
     LastEventRole,
     LastActiveTimeRole,
+    JoinStateRole,
     CurrentRoomRole,
   };