Add a timeline message when encryption is enabled

CMakeLists.txt

@@ -170,6 +170,7 @@ set(SRC_FILES
     src/ui/Avatar.cc
     src/ui/Badge.cc
     src/ui/LoadingIndicator.cc
+    src/ui/InfoMessage.cpp
     src/ui/FlatButton.cc
     src/ui/FloatingButton.cc
     src/ui/Label.cc
@@ -283,6 +284,7 @@ qt5_wrap_cpp(MOC_HEADERS
     include/ui/Avatar.h
     include/ui/Badge.h
     include/ui/LoadingIndicator.h
+    include/ui/InfoMessage.hpp
     include/ui/FlatButton.h
     include/ui/Label.h
     include/ui/FloatingButton.h

include/timeline/TimelineView.h

@@ -107,40 +107,6 @@ enum class TimelineDirection
         Bottom,
 };
 
-class DateSeparator : public QWidget
-{
-        Q_OBJECT
-
-        Q_PROPERTY(QColor textColor WRITE setTextColor READ textColor)
-        Q_PROPERTY(QColor boxColor WRITE setBoxColor READ boxColor)
-
-public:
-        DateSeparator(QDateTime datetime, QWidget *parent = nullptr);
-
-        void setTextColor(QColor color) { textColor_ = color; }
-        void setBoxColor(QColor color) { boxColor_ = color; }
-
-        QColor textColor() const { return textColor_; }
-        QColor boxColor() const { return boxColor_; }
-
-protected:
-        void paintEvent(QPaintEvent *event) override;
-
-private:
-        static constexpr int VPadding = 6;
-        static constexpr int HPadding = 12;
-        static constexpr int HMargin  = 20;
-
-        int width_;
-        int height_;
-
-        QString msg_;
-        QFont font_;
-
-        QColor textColor_ = QColor("black");
-        QColor boxColor_  = QColor("white");
-};
-
 class TimelineView : public QWidget
 {
         Q_OBJECT
@@ -162,7 +128,6 @@ public:
                             uint64_t size);
         void updatePendingMessage(const std::string &txn_id, const QString &event_id);
         void scrollDown();
-        QLabel *createDateSeparator(QDateTime datetime);
 
         //! Remove an item from the timeline with the given Event ID.
         void removeEvent(const QString &event_id);
@@ -220,7 +185,7 @@ private:
         void getMessages();
         //! HACK: Fixing layout flickering when adding to the bottom
         //! of the timeline.
-        void pushTimelineItem(TimelineItem *item)
+        void pushTimelineItem(QWidget *item)
         {
                 item->hide();
                 scroll_layout_->addWidget(item);
@@ -230,7 +195,7 @@ private:
         //! Decides whether or not to show or hide the scroll down button.
         void toggleScrollDownButton();
         void init();
-        void addTimelineItem(TimelineItem *item,
+        void addTimelineItem(QWidget *item,
                              TimelineDirection direction = TimelineDirection::Bottom);
         void updateLastSender(const QString &user_id, TimelineDirection direction);
         void notifyForLastEvent();
@@ -295,8 +260,8 @@ private:
                               const QDateTime &second = QDateTime::currentDateTime()) const;
 
         // Return nullptr if the event couldn't be parsed.
-        TimelineItem *parseMessageEvent(const mtx::events::collections::TimelineEvents &event,
-                                        TimelineDirection direction);
+        QWidget *parseMessageEvent(const mtx::events::collections::TimelineEvents &event,
+                                   TimelineDirection direction);
 
         QVBoxLayout *top_layout_;
         QVBoxLayout *scroll_layout_;

include/ui/InfoMessage.hpp

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <QColor>
+#include <QDateTime>
+#include <QWidget>
+
+class InfoMessage : public QWidget
+{
+        Q_OBJECT
+
+        Q_PROPERTY(QColor textColor WRITE setTextColor READ textColor)
+        Q_PROPERTY(QColor boxColor WRITE setBoxColor READ boxColor)
+
+public:
+        explicit InfoMessage(QWidget *parent = nullptr);
+        InfoMessage(QString msg, QWidget *parent = nullptr);
+
+        void setTextColor(QColor color) { textColor_ = color; }
+        void setBoxColor(QColor color) { boxColor_ = color; }
+        void saveDatetime(QDateTime datetime) { datetime_ = datetime; }
+
+        QColor textColor() const { return textColor_; }
+        QColor boxColor() const { return boxColor_; }
+        QDateTime datetime() const { return datetime_; }
+
+protected:
+        void paintEvent(QPaintEvent *event) override;
+
+        int width_;
+        int height_;
+
+        QString msg_;
+        QFont font_;
+
+        QDateTime datetime_;
+
+        QColor textColor_ = QColor("black");
+        QColor boxColor_  = QColor("white");
+};
+
+class DateSeparator : public InfoMessage
+{
+        Q_OBJECT
+
+public:
+        DateSeparator(QDateTime datetime, QWidget *parent = nullptr);
+};

resources/styles/nheko-dark.qss

@@ -23,7 +23,7 @@ QuickSwitcher {
     background-color: #202228;
 }
 
-DateSeparator {
+InfoMessage {
     qproperty-textColor: #caccd1;
     qproperty-boxColor: rgba(45, 49, 57, 120);
 }

resources/styles/nheko.qss

@@ -23,7 +23,7 @@ QuickSwitcher {
     background-color: white;
 }
 
-DateSeparator {
+InfoMessage {
     qproperty-textColor: #333;
     qproperty-boxColor: rgba(220, 220, 220, 120);
 }

resources/styles/system.qss

@@ -25,7 +25,7 @@ QuickSwitcher {
     background-color: palette(window);
 }
 
-DateSeparator {
+InfoMessage {
     qproperty-textColor: palette(text);
     qproperty-boxColor: palette(window);
 }

src/timeline/TimelineView.cc

@@ -23,6 +23,7 @@
 #include "ChatPage.h"
 #include "Config.h"
 #include "FloatingButton.h"
+#include "InfoMessage.hpp"
 #include "Logging.hpp"
 #include "Olm.hpp"
 #include "UserSettingsPage.h"
@@ -36,55 +37,19 @@
 
 using TimelineEvent = mtx::events::collections::TimelineEvents;
 
-DateSeparator::DateSeparator(QDateTime datetime, QWidget *parent)
-  : QWidget{parent}
+//! Retrieve the timestamp of the event represented by the given widget.
+QDateTime
+getDate(QWidget *widget)
 {
-        auto now  = QDateTime::currentDateTime();
-        auto days = now.daysTo(datetime);
+        auto item = qobject_cast<TimelineItem *>(widget);
+        if (item)
+                return item->descriptionMessage().datetime;
 
-        font_.setWeight(60);
-        font_.setPixelSize(conf::timeline::fonts::dateSeparator);
+        auto infoMsg = qobject_cast<InfoMessage *>(widget);
+        if (infoMsg)
+                return infoMsg->datetime();
 
-        QString fmt;
-
-        if (now.date().year() != datetime.date().year())
-                fmt = QString("ddd d MMMM yy");
-        else
-                fmt = QString("ddd d MMMM");
-
-        if (days == 0)
-                msg_ = tr("Today");
-        else if (std::abs(days) == 1)
-                msg_ = tr("Yesterday");
-        else
-                msg_ = datetime.toString(fmt);
-
-        QFontMetrics fm{font_};
-        width_  = fm.width(msg_) + HPadding * 2;
-        height_ = fm.ascent() + 2 * VPadding;
-
-        setFixedHeight(height_ + 2 * HMargin);
-}
-
-void
-DateSeparator::paintEvent(QPaintEvent *)
-{
-        QPainter p(this);
-        p.setRenderHint(QPainter::Antialiasing);
-        p.setFont(font_);
-
-        // Center the box horizontally & vertically.
-        auto textRegion = QRectF(width() / 2 - width_ / 2, HMargin, width_, height_);
-
-        QPainterPath ppath;
-        ppath.addRoundedRect(textRegion, height_ / 2, height_ / 2);
-
-        p.setPen(Qt::NoPen);
-        p.fillPath(ppath, boxColor());
-        p.drawPath(ppath);
-
-        p.setPen(QPen(textColor()));
-        p.drawText(textRegion, Qt::AlignCenter, msg_);
+        return QDateTime();
 }
 
 TimelineView::TimelineView(const mtx::responses::Timeline &timeline,
@@ -231,7 +196,7 @@ TimelineView::addBackwardsEvents(const mtx::responses::Messages &msgs)
         isPaginationInProgress_ = false;
 }
 
-TimelineItem *
+QWidget *
 TimelineView::parseMessageEvent(const mtx::events::collections::TimelineEvents &event,
                                 TimelineDirection direction)
 {
@@ -255,6 +220,12 @@ TimelineView::parseMessageEvent(const mtx::events::collections::TimelineEvents &
                 });
 
                 return nullptr;
+        } else if (mpark::holds_alternative<StateEvent<state::Encryption>>(event)) {
+                auto msg  = mpark::get<StateEvent<state::Encryption>>(event);
+                auto item = new InfoMessage(tr("Encryption is enabled"), this);
+                item->saveDatetime(QDateTime::fromMSecsSinceEpoch(msg.origin_server_ts));
+
+                return item;
         } else if (mpark::holds_alternative<RoomEvent<msg::Audio>>(event)) {
                 auto audio = mpark::get<RoomEvent<msg::Audio>>(event);
                 return processMessageEvent<AudioEvent, AudioItem>(audio, direction);
@@ -280,13 +251,18 @@ TimelineView::parseMessageEvent(const mtx::events::collections::TimelineEvents &
                 return processMessageEvent<Sticker, StickerItem>(mpark::get<Sticker>(event),
                                                                  direction);
         } else if (mpark::holds_alternative<EncryptedEvent<msg::Encrypted>>(event)) {
-                auto res  = parseEncryptedEvent(mpark::get<EncryptedEvent<msg::Encrypted>>(event));
-                auto item = parseMessageEvent(res.event, direction);
+                auto res = parseEncryptedEvent(mpark::get<EncryptedEvent<msg::Encrypted>>(event));
+                auto widget = parseMessageEvent(res.event, direction);
 
-                if (item != nullptr && res.isDecrypted)
+                if (widget == nullptr)
+                        return nullptr;
+
+                auto item = qobject_cast<TimelineItem *>(widget);
+
+                if (item && res.isDecrypted)
                         item->markReceived(true);
 
-                return item;
+                return widget;
         }
 
         return nullptr;
@@ -374,7 +350,7 @@ TimelineView::renderBottomEvents(const std::vector<TimelineEvent> &events)
         int counter = 0;
 
         for (const auto &event : events) {
-                TimelineItem *item = parseMessageEvent(event, TimelineDirection::Bottom);
+                QWidget *item = parseMessageEvent(event, TimelineDirection::Bottom);
 
                 if (item != nullptr) {
                         addTimelineItem(item, TimelineDirection::Bottom);
@@ -395,7 +371,7 @@ TimelineView::renderBottomEvents(const std::vector<TimelineEvent> &events)
 void
 TimelineView::renderTopEvents(const std::vector<TimelineEvent> &events)
 {
-        std::vector<TimelineItem *> items;
+        std::vector<QWidget *> items;
 
         // Reset the sender of the first message in the timeline
         // cause we're about to insert a new one.
@@ -408,7 +384,7 @@ TimelineView::renderTopEvents(const std::vector<TimelineEvent> &events)
         while (ii != 0) {
                 --ii;
 
-                TimelineItem *item = parseMessageEvent(events[ii], TimelineDirection::Top);
+                auto item = parseMessageEvent(events[ii], TimelineDirection::Top);
 
                 if (item != nullptr)
                         items.push_back(item);
@@ -429,9 +405,16 @@ TimelineView::renderTopEvents(const std::vector<TimelineEvent> &events)
 
         // If this batch is the first being rendered (i.e the first and the last
         // events originate from this batch), set the last sender.
-        if (lastSender_.isEmpty() && !items.empty())
-                saveLastMessageInfo(items.at(0)->descriptionMessage().userid,
-                                    items.at(0)->descriptionMessage().datetime);
+        if (lastSender_.isEmpty() && !items.empty()) {
+                for (const auto &w : items) {
+                        auto timelineItem = qobject_cast<TimelineItem *>(w);
+                        if (timelineItem) {
+                                saveLastMessageInfo(timelineItem->descriptionMessage().userid,
+                                                    timelineItem->descriptionMessage().datetime);
+                                break;
+                        }
+                }
+        }
 }
 
 void
@@ -569,17 +552,16 @@ TimelineView::isSenderRendered(const QString &user_id,
 }
 
 void
-TimelineView::addTimelineItem(TimelineItem *item, TimelineDirection direction)
+TimelineView::addTimelineItem(QWidget *item, TimelineDirection direction)
 {
-        const auto newDate = item->descriptionMessage().datetime;
+        const auto newDate = getDate(item);
 
         if (direction == TimelineDirection::Bottom) {
                 const auto lastItemPosition = scroll_layout_->count() - 1;
-                auto lastItem =
-                  qobject_cast<TimelineItem *>(scroll_layout_->itemAt(lastItemPosition)->widget());
+                const auto lastItem         = scroll_layout_->itemAt(lastItemPosition)->widget();
 
                 if (lastItem) {
-                        auto oldDate = lastItem->descriptionMessage().datetime;
+                        const auto oldDate = getDate(lastItem);
 
                         if (oldDate.daysTo(newDate) != 0) {
                                 auto separator = new DateSeparator(newDate, this);
@@ -594,11 +576,10 @@ TimelineView::addTimelineItem(TimelineItem *item, TimelineDirection direction)
                 // The first item (position 0) is a stretch widget that pushes
                 // the widgets to the bottom of the page.
                 if (scroll_layout_->count() > 1) {
-                        auto firstItem =
-                          qobject_cast<TimelineItem *>(scroll_layout_->itemAt(1)->widget());
+                        const auto firstItem = scroll_layout_->itemAt(1)->widget();
 
                         if (firstItem) {
-                                auto oldDate = firstItem->descriptionMessage().datetime;
+                                const auto oldDate = getDate(firstItem);
 
                                 if (newDate.daysTo(oldDate) != 0) {
                                         auto separator = new DateSeparator(oldDate);

src/ui/InfoMessage.cpp

@@ -0,0 +1,79 @@
+#include "Config.h"
+#include "InfoMessage.hpp"
+
+#include <QDateTime>
+#include <QPainter>
+#include <QPen>
+
+constexpr int VPadding = 6;
+constexpr int HPadding = 12;
+constexpr int HMargin  = 20;
+
+InfoMessage::InfoMessage(QWidget *parent)
+  : QWidget{parent}
+{
+        font_.setWeight(60);
+        font_.setPixelSize(conf::timeline::fonts::dateSeparator);
+}
+
+InfoMessage::InfoMessage(QString msg, QWidget *parent)
+  : QWidget{parent}
+  , msg_{msg}
+{
+        font_.setWeight(60);
+        font_.setPixelSize(conf::timeline::fonts::dateSeparator);
+
+        QFontMetrics fm{font_};
+        width_  = fm.width(msg_) + HPadding * 2;
+        height_ = fm.ascent() + 2 * VPadding;
+
+        setFixedHeight(height_ + 2 * HMargin);
+}
+
+void
+InfoMessage::paintEvent(QPaintEvent *)
+{
+        QPainter p(this);
+        p.setRenderHint(QPainter::Antialiasing);
+        p.setFont(font_);
+
+        // Center the box horizontally & vertically.
+        auto textRegion = QRectF(width() / 2 - width_ / 2, HMargin, width_, height_);
+
+        QPainterPath ppath;
+        ppath.addRoundedRect(textRegion, height_ / 2, height_ / 2);
+
+        p.setPen(Qt::NoPen);
+        p.fillPath(ppath, boxColor());
+        p.drawPath(ppath);
+
+        p.setPen(QPen(textColor()));
+        p.drawText(textRegion, Qt::AlignCenter, msg_);
+}
+
+DateSeparator::DateSeparator(QDateTime datetime, QWidget *parent)
+  : InfoMessage{parent}
+{
+        auto now  = QDateTime::currentDateTime();
+        auto days = now.daysTo(datetime);
+
+        QString fmt;
+
+        if (now.date().year() != datetime.date().year())
+                fmt = QString("ddd d MMMM yy");
+        else
+                fmt = QString("ddd d MMMM");
+
+        if (days == 0)
+                msg_ = tr("Today");
+        else if (std::abs(days) == 1)
+                msg_ = tr("Yesterday");
+        else
+                msg_ = datetime.toString(fmt);
+
+        QFontMetrics fm{font_};
+        width_  = fm.width(msg_) + HPadding * 2;
+        height_ = fm.ascent() + 2 * VPadding;
+
+        setFixedHeight(height_ + 2 * HMargin);
+}