Implement decryption of images

It is a bit of a hack, but it works...

3 files changed, 23 insertions, 3 deletions

diff --git a/src/timeline/TimelineModel.cpp b/src/timeline/TimelineModel.cpp

index f606b603..2c58e2f5 100644
--- a/src/timeline/TimelineModel.cpp
+++ b/src/timeline/TimelineModel.cpp
@@ -673,6 +673,19 @@ TimelineModel::internalAddEvents(
                         continue; // don't insert redaction into timeline
                 }
 
+                if (auto event =
+                      boost::get<mtx::events::EncryptedEvent<mtx::events::msg::Encrypted>>(&e)) {
+                        auto temp    = decryptEvent(*event).event;
+                        auto encInfo = boost::apply_visitor(
+                          [](const auto &ev) -> boost::optional<mtx::crypto::EncryptedFile> {
+                                  return eventEncryptionInfo(ev);
+                          },
+                          temp);
+
+                        if (encInfo)
+                                emit newEncryptedImage(encInfo.value());
+                }
+
                 this->events.insert(id, e);
                 ids.push_back(id);
         }
diff --git a/src/timeline/TimelineModel.h b/src/timeline/TimelineModel.h

index f52091e6..06c64acf 100644
--- a/src/timeline/TimelineModel.h
+++ b/src/timeline/TimelineModel.h
@@ -6,6 +6,7 @@
 #include <QHash>
 #include <QSet>
 
+#include <mtx/common.hpp>
 #include <mtx/responses.hpp>
 
 #include "Cache.h"
@@ -188,6 +189,7 @@ signals:
         void nextPendingMessage();
         void newMessageToSend(mtx::events::collections::TimelineEvents event);
         void mediaCached(QString mxcUrl, QString cacheUrl);
+        void newEncryptedImage(mtx::crypto::EncryptedFile encryptionInfo);
 
 private:
         DecryptionResult decryptEvent(
diff --git a/src/timeline/TimelineViewManager.cpp b/src/timeline/TimelineViewManager.cpp

index c44bcbbf..25f72a6d 100644
--- a/src/timeline/TimelineViewManager.cpp
+++ b/src/timeline/TimelineViewManager.cpp
@@ -102,9 +102,14 @@ TimelineViewManager::sync(const mtx::responses::Rooms &rooms)
 void
 TimelineViewManager::addRoom(const QString &room_id)
 {
-        if (!models.contains(room_id))
-                models.insert(room_id,
-                              QSharedPointer<TimelineModel>(new TimelineModel(this, room_id)));
+        if (!models.contains(room_id)) {
+                QSharedPointer<TimelineModel> newRoom(new TimelineModel(this, room_id));
+                connect(newRoom.data(),
+                        &TimelineModel::newEncryptedImage,
+                        imgProvider,
+                        &MxcImageProvider::addEncryptionInfo);
+                models.insert(room_id, std::move(newRoom));
+        }
 }
 
 void