Allow loading image only after explicit interactions

resources/qml/delegates/ImageMessage.qml

@@ -20,6 +20,8 @@ AbstractButton {
     required property int containerHeight
     property double divisor: EventDelegateChooser.isReply ? 10 : 4
 
+    property bool showImage: room.showImage()
+
     EventDelegateChooser.keepAspectRatio: true
     EventDelegateChooser.maxWidth: originalWidth
     EventDelegateChooser.maxHeight: containerHeight / divisor
@@ -113,7 +115,7 @@ AbstractButton {
 
         visible: !mxcimage.loaded
         anchors.fill: parent
-        source: url != "" ? (url.replace("mxc://", "image://MxcImage/") + "?scale") : ""
+        source: (url != "" && showImage) ? (url.replace("mxc://", "image://MxcImage/") + "?scale") : ""
         asynchronous: true
         fillMode: Image.PreserveAspectFit
         horizontalAlignment: Image.AlignLeft
@@ -130,7 +132,7 @@ AbstractButton {
         visible: loaded
         roomm: room
         play: !Settings.animateImagesOnHover || parent.hovered
-        eventId: parent.eventId
+        eventId: showImage ? parent.eventId : ""
 
         anchors.fill: parent
     }
@@ -147,7 +149,9 @@ AbstractButton {
         anchors.fill: parent
     }
 
-    onClicked: Settings.openImageExternal ? room.openMedia(eventId) : TimelineManager.openImageOverlay(room, url, eventId, originalWidth, proportionalHeight);
+    onClicked: {
+        Settings.openImageExternal ? room.openMedia(eventId) : TimelineManager.openImageOverlay(room, url, eventId, originalWidth, proportionalHeight);
+    }
 
     Item {
         id: overlay
@@ -180,4 +184,13 @@ AbstractButton {
 
     }
 
+    Button {
+        anchors.centerIn: parent
+        visible: !showImage && !parent.EventDelegateChooser.isReply
+        enabled: visible
+        text: qsTr("Show")
+        onClicked: {
+            showImage = true;
+        }
+    }
 }

src/UserSettingsPage.cpp

@@ -133,6 +133,12 @@ UserSettings::load(std::optional<QString> profile)
         presenceValue = 0;
     presence_ = static_cast<Presence>(presenceValue);
 
+    auto tempShowImage  = settings.value(prefix + "user/show_images", "").toString().toStdString();
+    auto showImageValue = QMetaEnum::fromType<ShowImage>().keyToValue(tempShowImage.c_str());
+    if (showImageValue < 0)
+        showImageValue = 0;
+    showImage_ = static_cast<ShowImage>(showImageValue);
+
     collapsedSpaces_.clear();
     auto tempSpaces = settings.value(prefix + "user/collapsed_spaces", QList<QVariant>{}).toList();
     for (const auto &e : std::as_const(tempSpaces))
@@ -612,6 +618,16 @@ UserSettings::setPresence(Presence state)
     save();
 }
 
+void
+UserSettings::setShowImage(ShowImage state)
+{
+    if (state == showImage_)
+        return;
+    showImage_ = state;
+    emit showImageChanged(state);
+    save();
+}
+
 void
 UserSettings::setTheme(QString theme)
 {
@@ -955,6 +971,9 @@ UserSettings::save()
     settings.setValue(
       prefix + "user/presence",
       QString::fromUtf8(QMetaEnum::fromType<Presence>().valueToKey(static_cast<int>(presence_))));
+    settings.setValue(
+      prefix + "user/show_images",
+      QString::fromUtf8(QMetaEnum::fromType<ShowImage>().valueToKey(static_cast<int>(showImage_))));
 
     QVariantList v;
     v.reserve(collapsedSpaces_.size());
@@ -1024,6 +1043,8 @@ UserSettingsModel::data(const QModelIndex &index, int role) const
             return tr("Enable small Avatars");
         case AnimateImagesOnHover:
             return tr("Play animated images only on hover");
+        case ShowImage:
+            return tr("Show images automatically");
         case TypingNotifications:
             return tr("Typing notifications");
         case SortByImportance:
@@ -1182,6 +1203,8 @@ UserSettingsModel::data(const QModelIndex &index, int role) const
             return i->smallAvatars();
         case AnimateImagesOnHover:
             return i->animateImagesOnHover();
+        case ShowImage:
+            return static_cast<int>(i->showImage());
         case TypingNotifications:
             return i->typingNotifications();
         case SortByImportance:
@@ -1349,6 +1372,10 @@ UserSettingsModel::data(const QModelIndex &index, int role) const
             return tr("Avatars are resized to fit above the message.");
         case AnimateImagesOnHover:
             return tr("Plays media like GIFs or WEBPs only when explicitly hovering over them.");
+        case ShowImage:
+            return tr("If images should be automatically displayed. You can select between always "
+                      "showing images by default, only show them by default in private rooms or "
+                      "always require interaction to show images.");
         case TypingNotifications:
             return tr(
               "Show who is typing in a room.\nThis will also enable or disable sending typing "
@@ -1504,6 +1531,7 @@ UserSettingsModel::data(const QModelIndex &index, int role) const
         case CameraResolution:
         case CameraFrameRate:
         case Ringtone:
+        case ShowImage:
             return Options;
         case TimelineMaxWidth:
         case PrivacyScreenTimeout:
@@ -1631,6 +1659,12 @@ UserSettingsModel::data(const QModelIndex &index, int role) const
               QStringLiteral("Dark"),
               QStringLiteral("System"),
             };
+        case ShowImage:
+            return QStringList{
+              tr("Always"),
+              tr("Only in private rooms"),
+              tr("Never"),
+            };
         case Microphone:
             return vecToList(CallDevices::instance().names(false, i->microphone().toStdString()));
         case Camera:
@@ -1710,6 +1744,16 @@ UserSettingsModel::setData(const QModelIndex &index, const QVariant &value, int
             } else
                 return false;
         }
+        case ShowImage: {
+            auto showImageValue = value.toInt();
+            if (showImageValue < 0 ||
+
+                QMetaEnum::fromType<UserSettings::ShowImage>().keyCount() <= showImageValue)
+                return false;
+
+            i->setShowImage(static_cast<UserSettings::ShowImage>(showImageValue));
+            return true;
+        }
         case MessageHoverHighlight: {
             if (value.userType() == QMetaType::Bool) {
                 i->setMessageHoverHighlight(value.toBool());
@@ -2241,6 +2285,9 @@ UserSettingsModel::UserSettingsModel(QObject *p)
     connect(s.get(), &UserSettings::animateImagesOnHoverChanged, this, [this]() {
         emit dataChanged(index(AnimateImagesOnHover), index(AnimateImagesOnHover), {Value});
     });
+    connect(s.get(), &UserSettings::showImageChanged, this, [this]() {
+        emit dataChanged(index(ShowImage), index(ShowImage), {Value});
+    });
     connect(s.get(), &UserSettings::typingNotificationsChanged, this, [this]() {
         emit dataChanged(index(TypingNotifications), index(TypingNotifications), {Value});
     });

src/UserSettingsPage.h

@@ -75,6 +75,7 @@ class UserSettings final : public QObject
     Q_PROPERTY(QString font READ font WRITE setFontFamily NOTIFY fontChanged)
     Q_PROPERTY(QString emojiFont READ emojiFont WRITE setEmojiFontFamily NOTIFY emojiFontChanged)
     Q_PROPERTY(Presence presence READ presence WRITE setPresence NOTIFY presenceChanged)
+    Q_PROPERTY(ShowImage showImage READ showImage WRITE setShowImage NOTIFY showImageChanged)
     Q_PROPERTY(QString ringtone READ ringtone WRITE setRingtone NOTIFY ringtoneChanged)
     Q_PROPERTY(QString microphone READ microphone WRITE setMicrophone NOTIFY microphoneChanged)
     Q_PROPERTY(QString camera READ camera WRITE setCamera NOTIFY cameraChanged)
@@ -157,6 +158,14 @@ public:
     };
     Q_ENUM(Presence)
 
+    enum class ShowImage
+    {
+        Always,
+        OnlyPrivate,
+        Never,
+    };
+    Q_ENUM(ShowImage)
+
     void save();
     void load(std::optional<QString> profile);
     void applyTheme();
@@ -196,6 +205,7 @@ public:
     void setPrivacyScreen(bool state);
     void setPrivacyScreenTimeout(int state);
     void setPresence(Presence state);
+    void setShowImage(ShowImage state);
     void setRingtone(QString ringtone);
     void setMicrophone(QString microphone);
     void setCamera(QString camera);
@@ -273,6 +283,7 @@ public:
         return emojiFont_;
     }
     Presence presence() const { return presence_; }
+    ShowImage showImage() const { return showImage_; }
     QString ringtone() const { return ringtone_; }
     QString microphone() const { return microphone_; }
     QString camera() const { return camera_; }
@@ -343,6 +354,7 @@ signals:
     void fontChanged(QString state);
     void emojiFontChanged(QString state);
     void presenceChanged(Presence state);
+    void showImageChanged(ShowImage state);
     void ringtoneChanged(QString ringtone);
     void microphoneChanged(QString microphone);
     void cameraChanged(QString camera);
@@ -418,6 +430,7 @@ private:
     QString font_;
     QString emojiFont_;
     Presence presence_;
+    ShowImage showImage_;
     QString ringtone_;
     QString microphone_;
     QString camera_;
@@ -490,6 +503,7 @@ class UserSettingsModel : public QAbstractListModel
         TimelineSection,
         TimelineMaxWidth,
         EnlargeEmojiOnlyMessages,
+        ShowImage,
         OpenImageExternal,
         OpenVideoExternal,
         ButtonsInTimeline,

src/notifications/Manager.cpp

@@ -5,9 +5,33 @@
 #include "notifications/Manager.h"
 
 #include "Cache.h"
+#include "Cache_p.h"
 #include "EventAccessors.h"
+#include "UserSettingsPage.h"
 #include "Utils.h"
 
+bool
+NotificationsManager::allowShowingImages(const mtx::responses::Notification &notification)
+{
+    auto show = UserSettings::instance()->showImage();
+
+    switch (show) {
+    case UserSettings::ShowImage::Always:
+        return true;
+    case UserSettings::ShowImage::OnlyPrivate: {
+        auto accessRules = cache::client()
+                             ->getStateEvent<mtx::events::state::JoinRules>(notification.room_id)
+                             .value_or(mtx::events::StateEvent<mtx::events::state::JoinRules>{})
+                             .content;
+
+        return accessRules.join_rule != mtx::events::state::JoinRule::Public;
+    }
+    case UserSettings::ShowImage::Never:
+    default:
+        return false;
+    }
+}
+
 QString
 NotificationsManager::getMessageTemplate(const mtx::responses::Notification &notification)
 {

src/notifications/Manager.h

@@ -66,7 +66,6 @@ private:
                                 const QString &text,
                                 const QImage &icon);
     void closeNotification(uint id);
-
     const bool hasMarkup_;
     const bool hasImages_;
 #endif
@@ -111,6 +110,7 @@ private slots:
 
 private:
     QString getMessageTemplate(const mtx::responses::Notification &notification);
+    bool allowShowingImages(const mtx::responses::Notification &notification);
 
     // notification ID to (room ID, event ID)
     // Only populated on Linux atm

src/notifications/ManagerLinux.cpp

@@ -114,7 +114,7 @@ NotificationsManager::postNotification(const mtx::responses::Notification &notif
     }
 
     if (hasMarkup_) {
-        if (hasImages_ &&
+        if (hasImages_ && allowShowingImages(notification) &&
             (mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image ||
              mtx::accessors::event_type(notification.event) == mtx::events::EventType::Sticker)) {
             MxcImageProvider::download(

src/notifications/ManagerMac.cpp

@@ -93,7 +93,9 @@ NotificationsManager::postNotification(const mtx::responses::Notification &notif
     } else {
         const QString messageInfo =
           (isReply ? tr("%1 replied to a message") : tr("%1 sent a message")).arg(sender);
-        if (mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image)
+        if (allowShowingImages(notification) &&
+            (mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image ||
+             mtx::accessors::event_type(notification.event) == mtx::events::EventType::Sticker))
             MxcImageProvider::download(
               QString::fromStdString(mtx::accessors::url(notification.event)).remove("mxc://"),
               QSize(200, 80),

src/notifications/ManagerWin.cpp

@@ -83,8 +83,9 @@ NotificationsManager::postNotification(const mtx::responses::Notification &notif
     if (!icon.save(iconPath))
         iconPath.clear();
 
-    if (mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image ||
-        mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image) {
+    if (allowShowingImages(notification) &&
+        (mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image ||
+         mtx::accessors::msg_type(notification.event) == mtx::events::MessageType::Image)) {
         MxcImageProvider::download(
           QString::fromStdString(mtx::accessors::url(notification.event))
             .remove(QStringLiteral("mxc://")),

src/timeline/TimelineModel.cpp

@@ -3387,4 +3387,26 @@ TimelineModel::parentSpace()
     return parentSummary.get();
 }
 
+bool
+TimelineModel::showImage() const
+{
+    auto show = UserSettings::instance()->showImage();
+
+    switch (show) {
+    case UserSettings::ShowImage::Always:
+        return true;
+    case UserSettings::ShowImage::OnlyPrivate: {
+        auto accessRules = cache::client()
+                             ->getStateEvent<mtx::events::state::JoinRules>(room_id_.toStdString())
+                             .value_or(mtx::events::StateEvent<mtx::events::state::JoinRules>{})
+                             .content;
+
+        return accessRules.join_rule != mtx::events::state::JoinRule::Public;
+    }
+    case UserSettings::ShowImage::Never:
+    default:
+        return false;
+    }
+}
+
 #include "moc_TimelineModel.cpp"

src/timeline/TimelineModel.h

@@ -323,6 +323,7 @@ public:
       const mtx::events::StateEvent<mtx::events::msc2545::ImagePack> &event) const;
     Q_INVOKABLE QString formatPolicyRule(const QString &id) const;
     Q_INVOKABLE QVariantMap formatRedactedEvent(const QString &id);
+    Q_INVOKABLE bool showImage() const;
 
     Q_INVOKABLE void viewRawMessage(const QString &id);
     Q_INVOKABLE void forwardMessage(const QString &eventId, QString roomId);