Resolve name and avatar on 1-on-1 rooms

include/ChatPage.h

@@ -59,6 +59,7 @@ private slots:
 	void logout();
 
 private:
+	void updateDisplayNames(const RoomState &state);
 	void updateRoomState(RoomState &room_state, const QJsonArray &events);
 
 	QHBoxLayout *topLayout_;

include/RoomInfoListItem.h

@@ -50,8 +50,8 @@ protected:
 	void paintEvent(QPaintEvent *event) override;
 
 private:
-	const int Padding = 10;
-	const int IconSize = 45;
+	const int Padding = 7;
+	const int IconSize = 46;
 
 	RippleOverlay *ripple_overlay_;
 
@@ -66,7 +66,7 @@ private:
 
 	bool isPressed_ = false;
 
-	int maxHeight_ = 60;
+	int maxHeight_;
 	int unreadMsgCount_ = 0;
 };
 
@@ -87,5 +87,5 @@ inline RoomState RoomInfoListItem::state() const
 
 inline void RoomInfoListItem::setAvatar(const QImage &img)
 {
-	roomAvatar_ = QPixmap::fromImage(img.scaled(IconSize, IconSize, Qt::KeepAspectRatio, Qt::SmoothTransformation));
+	roomAvatar_ = QPixmap::fromImage(img.scaled(IconSize, IconSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
 }

include/RoomState.h

@@ -18,6 +18,7 @@
 #pragma once
 
 #include <QPixmap>
+#include <QUrl>
 
 #include "AliasesEventContent.h"
 #include "AvatarEventContent.h"
@@ -25,6 +26,7 @@
 #include "CreateEventContent.h"
 #include "HistoryVisibilityEventContent.h"
 #include "JoinRulesEventContent.h"
+#include "MemberEventContent.h"
 #include "NameEventContent.h"
 #include "PowerLevelsEventContent.h"
 #include "TopicEventContent.h"
@@ -38,11 +40,20 @@ namespace events = matrix::events;
 class RoomState
 {
 public:
-	QString resolveName() const;
-	inline QString resolveTopic() const;
+	// Calculate room data that are not immediatly accessible. Like room name and avatar.
+	//
+	// e.g If the room is 1-on-1 name and avatar should be extracted from a user.
+	void resolveName();
+	void resolveAvatar();
 
-	QPixmap avatar_img_;
+	inline QUrl getAvatar() const;
+	inline QString getName() const;
+	inline QString getTopic() const;
 
+	void removeLeaveMemberships();
+	void update(const RoomState &state);
+
+	// The latest state events.
 	events::StateEvent<events::AliasesEventContent> aliases;
 	events::StateEvent<events::AvatarEventContent> avatar;
 	events::StateEvent<events::CanonicalAliasEventContent> canonical_alias;
@@ -52,9 +63,30 @@ public:
 	events::StateEvent<events::NameEventContent> name;
 	events::StateEvent<events::PowerLevelsEventContent> power_levels;
 	events::StateEvent<events::TopicEventContent> topic;
+
+	// Contains the m.room.member events for all the joined users.
+	QMap<QString, events::StateEvent<events::MemberEventContent>> memberships;
+
+private:
+	QUrl avatar_;
+	QString name_;
+
+	// It defines the user whose avatar is used for the room. If the room has an avatar
+	// event this should be empty.
+	QString userAvatar_;
 };
 
-inline QString RoomState::resolveTopic() const
+inline QString RoomState::getTopic() const
 {
 	return topic.content().topic().simplified();
 }
+
+inline QString RoomState::getName() const
+{
+	return name_;
+}
+
+inline QUrl RoomState::getAvatar() const
+{
+	return avatar_;
+}

include/events/MemberEventContent.h

@@ -28,19 +28,19 @@ namespace events
 {
 enum class Membership {
 	// The user is banned.
-	BanState,
+	Ban,
 
 	// The user has been invited.
-	InviteState,
+	Invite,
 
 	// The user has joined.
-	JoinState,
+	Join,
 
 	// The user has requested to join.
-	KnockState,
+	Knock,
 
 	// The user has left.
-	LeaveState,
+	Leave,
 };
 
 /*

src/ChatPage.cc

@@ -220,6 +220,17 @@ void ChatPage::syncFailed(const QString &msg)
 	sync_timer_->start(sync_interval_ * 5);
 }
 
+// TODO: Should be moved in another class that manages this global list.
+void ChatPage::updateDisplayNames(const RoomState &state)
+{
+	for (const auto member : state.memberships) {
+		auto displayName = member.content().displayName();
+
+		if (!displayName.isEmpty())
+			TimelineViewManager::DISPLAY_NAMES.insert(member.stateKey(), displayName);
+	}
+}
+
 void ChatPage::syncCompleted(const SyncResponse &response)
 {
 	client_->setNextBatchToken(response.nextBatch());
@@ -234,8 +245,16 @@ void ChatPage::syncCompleted(const SyncResponse &response)
 
 		updateRoomState(room_state, it.value().state().events());
 		updateRoomState(room_state, it.value().timeline().events());
-
-		state_manager_.insert(it.key(), room_state);
+		updateDisplayNames(room_state);
+
+		if (state_manager_.contains(it.key())) {
+			// TODO: Use pointers instead of copying.
+			auto oldState = state_manager_[it.key()];
+			oldState.update(room_state);
+			state_manager_.insert(it.key(), oldState);
+		} else {
+			qWarning() << "New rooms cannot be added after initial sync, yet.";
+		}
 
 		if (it.key() == current_room_)
 			changeTopRoomInfo(it.key());
@@ -260,6 +279,12 @@ void ChatPage::initialSyncCompleted(const SyncResponse &response)
 		updateRoomState(room_state, it.value().state().events());
 		updateRoomState(room_state, it.value().timeline().events());
 
+		room_state.removeLeaveMemberships();
+		room_state.resolveName();
+		room_state.resolveAvatar();
+
+		updateDisplayNames(room_state);
+
 		state_manager_.insert(it.key(), room_state);
 	}
 
@@ -298,13 +323,13 @@ void ChatPage::changeTopRoomInfo(const QString &room_id)
 
 	auto state = state_manager_[room_id];
 
-	top_bar_->updateRoomName(state.resolveName());
-	top_bar_->updateRoomTopic(state.resolveTopic());
+	top_bar_->updateRoomName(state.getName());
+	top_bar_->updateRoomTopic(state.getTopic());
 
 	if (room_avatars_.contains(room_id))
 		top_bar_->updateRoomAvatar(room_avatars_.value(room_id).toImage());
 	else
-		top_bar_->updateRoomAvatarFromName(state.resolveName());
+		top_bar_->updateRoomAvatarFromName(state.getName());
 
 	current_room_ = room_id;
 }
@@ -383,15 +408,7 @@ void ChatPage::updateRoomState(RoomState &room_state, const QJsonArray &events)
 				events::StateEvent<events::MemberEventContent> member;
 				member.deserialize(event);
 
-				auto display_name = member.content().displayName();
-
-				if (display_name.isEmpty())
-					display_name = member.stateKey();
-
-				auto current_name = TimelineViewManager::DISPLAY_NAMES.value(member.stateKey());
-
-				if (current_name.isEmpty() || current_name == member.stateKey())
-					TimelineViewManager::DISPLAY_NAMES.insert(member.stateKey(), display_name);
+				room_state.memberships.insert(member.stateKey(), member);
 
 				break;
 			}

src/RoomInfoListItem.cc

@@ -29,7 +29,7 @@ RoomInfoListItem::RoomInfoListItem(RoomState state, QString room_id, QWidget *pa
     , state_(state)
     , roomId_(room_id)
     , isPressed_(false)
-    , maxHeight_(60)
+    , maxHeight_(IconSize + 2 * Padding)
     , unreadMsgCount_(0)
 {
 	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
@@ -71,7 +71,7 @@ void RoomInfoListItem::paintEvent(QPaintEvent *event)
 	QRect avatarRegion(Padding, Padding, IconSize, IconSize);
 
 	// Description line
-	int bottom_y = avatarRegion.center().y() + metrics.height() / 2 + Padding / 2;
+	int bottom_y = maxHeight_ - Padding - metrics.height() / 2 + Padding / 2;
 
 	if (width() > ui::sidebar::SmallSize) {
 		if (isPressed_) {
@@ -79,8 +79,8 @@ void RoomInfoListItem::paintEvent(QPaintEvent *event)
 			p.setPen(pen);
 		}
 
-		auto name = metrics.elidedText(state_.resolveName(), Qt::ElideRight, (width() - IconSize - 2 * Padding) * 0.8);
-		p.drawText(QPoint(2 * Padding + IconSize, avatarRegion.center().y() - metrics.height() / 2), name);
+		auto name = metrics.elidedText(state_.getName(), Qt::ElideRight, (width() - IconSize - 2 * Padding) * 0.8);
+		p.drawText(QPoint(2 * Padding + IconSize, Padding + metrics.height()), name);
 
 		if (!isPressed_) {
 			QPen pen(QColor("#5d6565"));
@@ -92,7 +92,7 @@ void RoomInfoListItem::paintEvent(QPaintEvent *event)
 		if (unreadMsgCount_ > 0)
 			descPercentage = 0.8;
 
-		auto description = metrics.elidedText(state_.resolveTopic(), Qt::ElideRight, width() * descPercentage - 2 * Padding - IconSize);
+		auto description = metrics.elidedText(state_.getTopic(), Qt::ElideRight, width() * descPercentage - 2 * Padding - IconSize);
 		p.drawText(QPoint(2 * Padding + IconSize, bottom_y), description);
 	}
 
@@ -113,7 +113,7 @@ void RoomInfoListItem::paintEvent(QPaintEvent *event)
 		p.setFont(font);
 		p.setPen(QColor("#333"));
 		p.setBrush(Qt::NoBrush);
-		p.drawText(avatarRegion.translated(0, -1), Qt::AlignCenter, QChar(state_.resolveName()[0]));
+		p.drawText(avatarRegion.translated(0, -1), Qt::AlignCenter, QChar(state_.getName()[0]));
 	} else {
 		p.save();
 

src/RoomList.cc

@@ -100,8 +100,8 @@ void RoomList::setInitialRooms(const QMap<QString, RoomState> &states)
 		auto room_id = it.key();
 		auto state = it.value();
 
-		if (!state.avatar.content().url().toString().isEmpty())
-			client_->fetchRoomAvatar(room_id, state.avatar.content().url());
+		if (!state.getAvatar().toString().isEmpty())
+			client_->fetchRoomAvatar(room_id, state.getAvatar());
 
 		RoomInfoListItem *room_item = new RoomInfoListItem(state, room_id, scrollArea_);
 		connect(room_item, &RoomInfoListItem::clicked, this, &RoomList::highlightSelectedRoom);
@@ -133,8 +133,8 @@ void RoomList::sync(const QMap<QString, RoomState> &states)
 
 		auto room = rooms_[room_id];
 
-		auto current_avatar = room->state().avatar.content().url();
-		auto new_avatar = state.avatar.content().url();
+		auto current_avatar = room->state().getAvatar();
+		auto new_avatar = state.getAvatar();
 
 		if (current_avatar != new_avatar && !new_avatar.toString().isEmpty())
 			client_->fetchRoomAvatar(room_id, new_avatar);

src/RoomState.cc

@@ -15,18 +15,138 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <QDebug>
+#include <QSettings>
+
 #include "RoomState.h"
 
-QString RoomState::resolveName() const
+namespace events = matrix::events;
+
+void RoomState::resolveName()
 {
-	if (!name.content().name().isEmpty())
-		return name.content().name().simplified();
+	name_ = "Empty Room";
+	userAvatar_.clear();
+
+	if (!name.content().name().isEmpty()) {
+		name_ = name.content().name().simplified();
+		return;
+	}
+
+	if (!canonical_alias.content().alias().isEmpty()) {
+		name_ = canonical_alias.content().alias().simplified();
+		return;
+	}
+
+	// FIXME: Doesn't follow the spec guidelines.
+	if (aliases.content().aliases().size() != 0) {
+		name_ = aliases.content().aliases()[0].simplified();
+		return;
+	}
+
+	QSettings settings;
+	auto user_id = settings.value("auth/user_id");
+
+	// TODO: Display names should be sorted alphabetically.
+	for (const auto membership : memberships) {
+		if (membership.stateKey() == user_id)
+			continue;
+
+		if (membership.content().membershipState() == events::Membership::Join) {
+			userAvatar_ = membership.stateKey();
+
+			if (membership.content().displayName().isEmpty())
+				name_ = membership.stateKey();
+			else
+				name_ = membership.content().displayName();
+
+			break;
+		}
+	}
+
+	// TODO: pluralization
+	if (memberships.size() > 2)
+		name_ = QString("%1 and %2 others").arg(name_).arg(memberships.size());
+}
+
+void RoomState::resolveAvatar()
+{
+	if (userAvatar_.isEmpty()) {
+		avatar_ = avatar.content().url();
+		return;
+	}
+
+	if (memberships.contains(userAvatar_)) {
+		avatar_ = memberships[userAvatar_].content().avatarUrl();
+	} else {
+		qWarning() << "Setting room avatar from unknown user id" << userAvatar_;
+	}
+}
+
+// Should be used only after initial sync.
+void RoomState::removeLeaveMemberships()
+{
+	for (auto it = memberships.begin(); it != memberships.end();) {
+		if (it.value().content().membershipState() == events::Membership::Leave) {
+			it = memberships.erase(it);
+		} else {
+			++it;
+		}
+	}
+}
+
+void RoomState::update(const RoomState &state)
+{
+	bool needsNameCalculation = false;
+	bool needsAvatarCalculation = false;
+
+	if (aliases.eventId() != state.aliases.eventId()) {
+		aliases = state.aliases;
+	}
+
+	if (avatar.eventId() != state.avatar.eventId()) {
+		avatar = state.avatar;
+		needsAvatarCalculation = true;
+	}
+
+	if (canonical_alias.eventId() != state.canonical_alias.eventId()) {
+		canonical_alias = state.canonical_alias;
+		needsNameCalculation = true;
+	}
+
+	if (create.eventId() != state.create.eventId())
+		create = state.create;
+	if (history_visibility.eventId() != state.history_visibility.eventId())
+		history_visibility = state.history_visibility;
+	if (join_rules.eventId() != state.join_rules.eventId())
+		join_rules = state.join_rules;
+
+	if (name.eventId() != state.name.eventId()) {
+		name = state.name;
+		needsNameCalculation = true;
+	}
+
+	if (power_levels.eventId() != state.power_levels.eventId())
+		power_levels = state.power_levels;
+	if (topic.eventId() != state.topic.eventId())
+		topic = state.topic;
+
+	for (auto it = state.memberships.constBegin(); it != state.memberships.constEnd(); ++it) {
+		auto membershipState = it.value().content().membershipState();
+
+		if (it.key() == userAvatar_) {
+			needsNameCalculation = true;
+			needsAvatarCalculation = true;
+		}
 
-	if (!canonical_alias.content().alias().isEmpty())
-		return canonical_alias.content().alias().simplified();
+		if (membershipState == events::Membership::Leave)
+			this->memberships.remove(it.key());
+		else
+			this->memberships.insert(it.key(), it.value());
+	}
 
-	if (aliases.content().aliases().size() != 0)
-		return aliases.content().aliases()[0].simplified();
+	if (needsNameCalculation)
+		resolveName();
 
-	return "Unknown Room Name";
+	if (needsAvatarCalculation)
+		resolveAvatar();
 }

src/events/MemberEventContent.cc

@@ -34,15 +34,15 @@ void MemberEventContent::deserialize(const QJsonValue &data)
 	auto value = object.value("membership").toString();
 
 	if (value == "ban")
-		membership_state_ = Membership::BanState;
+		membership_state_ = Membership::Ban;
 	else if (value == "invite")
-		membership_state_ = Membership::InviteState;
+		membership_state_ = Membership::Invite;
 	else if (value == "join")
-		membership_state_ = Membership::JoinState;
+		membership_state_ = Membership::Join;
 	else if (value == "knock")
-		membership_state_ = Membership::KnockState;
+		membership_state_ = Membership::Knock;
 	else if (value == "leave")
-		membership_state_ = Membership::LeaveState;
+		membership_state_ = Membership::Leave;
 	else
 		throw DeserializationException(QString("Unknown membership value: %1").arg(value).toUtf8().constData());