[konheko] Show file messages and allow some basic downloads

qml/pages/Message.qml

@@ -144,6 +144,14 @@ Item {
 
         }
 
+        DelegateChoice {
+            roleValue: EventType.FileMessage
+
+            FileMessage {
+            }
+
+        }
+
         DelegateChoice {
             Placeholder {
             }

qml/pages/delegates/FileMessage.qml

+import QtQuick 2.0
+import QtQuick.Layouts 1.0
+import Sailfish.Silica 1.0
+
+RowLayout {
+    IconButton {
+        id: downloadButton
+
+        property var downloader
+
+        icon.source: "image://theme/icon-m-cloud-download"
+        onClicked: downloader = mxcDownloader.downloadToDownloadFolder(model.Url, model.Body)
+    }
+
+    ColumnLayout {
+        Text {
+            id: body
+
+            text: model.Body
+            color: Theme.primaryColor
+            wrapMode: Text.Wrap
+            Layout.fillWidth: true
+        }
+
+        Text {
+            id: fileSize
+
+            text: model.FileSize
+            color: Theme.primaryColor
+            wrapMode: Text.Wrap
+            Layout.fillWidth: true
+        }
+
+    }
+
+}

src/models/roommodel.cpp

@@ -46,6 +46,11 @@ template <class T> auto eventWidth(const mtx::events::RoomEvent<T> &e) -> declty
     return e.content.info.w;
 }
 
+template <class T> uint64_t eventFileSize(const Event<T> &) { return 0; }
+template <class T> auto eventFileSize(const mtx::events::RoomEvent<T> &e) -> decltype(e.content.info.size) {
+    return e.content.info.size;
+}
+
 template <class T> double eventPropHeight(const mtx::events::RoomEvent<T> &e) {
     auto w = eventWidth(e);
     auto h = eventHeight(e);
@@ -627,6 +632,7 @@ QHash<int, QByteArray> Room::roleNames() const {
     roles[ThumbnailUrl] = "ThumbnailUrl";
     roles[Height] = "Height";
     roles[Width] = "Width";
+    roles[FileSize] = "FileSize";
     roles[ProportionalHeight] = "ProportionalHeight";
     roles[IsSender] = "IsSender";
     return roles;
@@ -673,6 +679,22 @@ QVariant Room::data(const QModelIndex &index, int role) const {
         return std::visit([](const auto &e) -> uint64_t { return eventHeight(e); }, event);
     case Width:
         return std::visit([](const auto &e) -> uint64_t { return eventWidth(e); }, event);
+    case FileSize: {
+        auto bytes = std::visit([](const auto &e) -> uint64_t { return eventFileSize(e); }, event);
+
+        // from nheko
+        constexpr static const char *units[] = {"B", "KiB", "MiB", "GiB", "TiB"};
+        constexpr static const int length = sizeof(units) / sizeof(units[0]);
+
+        int u = 0;
+        double size = static_cast<double>(bytes);
+        while (size >= 1024.0 && u < length) {
+            ++u;
+            size /= 1024.0;
+        }
+
+        return QString::number(size, 'g', 4) + ' ' + units[u];
+    }
     case ProportionalHeight:
         return std::visit([](const auto &e) -> double { return eventPropHeight(e); }, event);
     case IsSender:

src/models/roommodel.h

@@ -111,6 +111,7 @@ struct Room : public QAbstractListModel {
         ThumbnailUrl,
         Height,
         Width,
+        FileSize,
         ProportionalHeight,
         IsSender,
     };

src/mxcdownloader.cpp

@@ -51,3 +51,13 @@ bool MXCDownloader::cached(QString url) {
 
     return cacheFile.exists();
 }
+
+Q_INVOKABLE QObject *MXCDownloader::downloadToDownloadFolder(QString url, QString filename) {
+    auto temp = new MXCDownloadResponse(url);
+
+    connect(temp, &MXCDownloadResponse::downloaded, temp, [filename](QString oldName) {
+        auto newName = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + "/" + filename;
+        QFile::rename(oldName, newName);
+    });
+    return temp;
+}

src/mxcdownloader.h

@@ -24,5 +24,6 @@ class MXCDownloader : public QObject {
 
   public:
     Q_INVOKABLE QObject *download(QString url) { return new MXCDownloadResponse(url); }
+    Q_INVOKABLE QObject *downloadToDownloadFolder(QString url, QString filename);
     Q_INVOKABLE bool cached(QString url);
 };