feat(extensions): UI updates for extension support

Added a UI element to indicate extension support of the chatroom. For
all groups it will always be red since we do not support extensions in
groups. In a 1-1 chat the indicator will either be green/yellow/red
depending on if the friend has support for all/some/none of qTox's
desired extension set.

CMakeLists.txt

@@ -362,6 +362,8 @@ set(${PROJECT_NAME}_SOURCES
   src/widget/contentlayout.h
   src/widget/emoticonswidget.cpp
   src/widget/emoticonswidget.h
+  src/widget/extensionstatus.cpp
+  src/widget/extensionstatus.h
   src/widget/flowlayout.cpp
   src/widget/flowlayout.h
   src/widget/searchform.cpp

res.qrc

@@ -28,6 +28,9 @@
         <file>img/status/offline_notification.svg</file>
         <file>img/status/online.svg</file>
         <file>img/status/online_notification.svg</file>
+        <file>img/status/extensions_available.svg</file>
+        <file>img/status/extensions_partial.svg</file>
+        <file>img/status/extensions_unavailable.svg</file>
         <file>img/taskbar/dark/taskbar_online.svg</file>
         <file>img/taskbar/dark/taskbar_online_event.svg</file>
         <file>img/taskbar/dark/taskbar_away.svg</file>

src/widget/chatformheader.cpp

@@ -18,6 +18,9 @@
 */
 
 #include "chatformheader.h"
+#include "extensionstatus.h"
+
+#include "src/model/status.h"
 
 #include "src/widget/gui.h"
 #include "src/widget/maskablepixmapwidget.h"
@@ -117,16 +120,24 @@ ChatFormHeader::ChatFormHeader(QWidget* parent)
     avatar = new MaskablePixmapWidget(this, AVATAR_SIZE, ":/img/avatar_mask.svg");
     avatar->setObjectName("avatar");
 
+    nameLine = new QHBoxLayout();
+    nameLine->setSpacing(3);
+
+    extensionStatus = new ExtensionStatus();
+
     nameLabel = new CroppingLabel();
     nameLabel->setObjectName("nameLabel");
     nameLabel->setMinimumHeight(Style::getFont(Style::Medium).pixelSize());
     nameLabel->setEditable(true);
     nameLabel->setTextFormat(Qt::PlainText);
     connect(nameLabel, &CroppingLabel::editFinished, this, &ChatFormHeader::nameChanged);
 
+    nameLine->addWidget(extensionStatus);
+    nameLine->addWidget(nameLabel);
+
     headTextLayout = new QVBoxLayout();
     headTextLayout->addStretch();
-    headTextLayout->addWidget(nameLabel);
+    headTextLayout->addLayout(nameLine);
     headTextLayout->addStretch();
 
     micButton = createButton("micButton", this, &ChatFormHeader::micMuteToggle);
@@ -223,6 +234,11 @@ void ChatFormHeader::removeCallConfirm()
     callConfirm.reset(nullptr);
 }
 
+void ChatFormHeader::updateExtensionSupport(ExtensionSet extensions)
+{
+    extensionStatus->onExtensionSetUpdate(extensions);
+}
+
 void ChatFormHeader::updateCallButtons(bool online, bool audio, bool video)
 {
     const bool audioAvaliable = online && (mode & Mode::Audio);

src/widget/chatformheader.h

@@ -21,14 +21,19 @@
 
 #include <QWidget>
 
+#include "src/core/extension.h"
+
 #include <memory>
 
 class MaskablePixmapWidget;
 class QVBoxLayout;
+class QHBoxLayout;
 class CroppingLabel;
 class QPushButton;
 class QToolButton;
 class CallConfirmWidget;
+class QLabel;
+class ExtensionStatus;
 
 class ChatFormHeader : public QWidget
 {
@@ -64,6 +69,7 @@ class ChatFormHeader : public QWidget
     void showCallConfirm();
     void removeCallConfirm();
 
+    void updateExtensionSupport(ExtensionSet extensions);
     void updateCallButtons(bool online, bool audio, bool video = false);
     void updateMuteMicButton(bool active, bool inputMuted);
     void updateMuteVolButton(bool active, bool outputMuted);
@@ -98,6 +104,8 @@ private slots:
     Mode mode;
     MaskablePixmapWidget* avatar;
     QVBoxLayout* headTextLayout;
+    QHBoxLayout* nameLine;
+    ExtensionStatus* extensionStatus;
     CroppingLabel* nameLabel;
 
     QPushButton* callButton;

src/widget/extensionstatus.cpp

@@ -0,0 +1,54 @@
+/*
+    Copyright © 2019-2020 by The qTox Project Contributors
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    qTox is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    qTox is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "extensionstatus.h"
+
+#include <QIcon>
+
+ExtensionStatus::ExtensionStatus(QWidget* parent)
+    : QLabel(parent)
+{
+    // Initialize with 0 extensions
+    onExtensionSetUpdate(ExtensionSet());
+}
+
+void ExtensionStatus::onExtensionSetUpdate(ExtensionSet extensionSet)
+{
+    QString iconName;
+    QString hoverText;
+    if (extensionSet.all()) {
+        iconName = ":/img/status/extensions_available.svg";
+        hoverText = tr("All extensions supported");
+    } else if (extensionSet.none()) {
+        iconName = ":/img/status/extensions_unavailable.svg";
+        hoverText = tr("No extensions supported");
+    } else {
+        iconName = ":/img/status/extensions_partial.svg";
+        hoverText = tr("Not all extensions supported");
+    }
+
+    hoverText += "\n";
+    hoverText += tr("Multipart Messages: ");
+    hoverText += extensionSet[ExtensionType::messages] ? "✔" : "❌";
+
+    auto pixmap = QIcon(iconName).pixmap(QSize(16, 16));
+
+    setPixmap(pixmap);
+    setToolTip(hoverText);
+}

src/widget/extensionstatus.h

@@ -0,0 +1,34 @@
+/*
+    Copyright © 2019-2020 by The qTox Project Contributors
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    qTox is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    qTox is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "src/core/extension.h"
+
+#include <QLabel>
+
+class ExtensionStatus : public QLabel
+{
+    Q_OBJECT
+public:
+    ExtensionStatus(QWidget* parent = nullptr);
+
+public slots:
+    void onExtensionSetUpdate(ExtensionSet extensionSet);
+};

src/widget/form/chatform.cpp

@@ -181,6 +181,8 @@ ChatForm::ChatForm(Profile& profile, Friend* chatFriend, IChatLog& chatLog, IMes
 
     connect(bodySplitter, &QSplitter::splitterMoved, this, &ChatForm::onSplitterMoved);
 
+    connect(f, &Friend::extensionSupportChanged, this, &ChatForm::onExtensionSupportChanged);
+
     updateCallButtons();
 
     setAcceptDrops(true);
@@ -224,6 +226,11 @@ void ChatForm::onFileNameChanged(const ToxPk& friendPk)
                             "so you can save the file on Windows."));
 }
 
+void ChatForm::onExtensionSupportChanged(ExtensionSet extensions)
+{
+    headWidget->updateExtensionSupport(extensions);
+}
+
 void ChatForm::onTextEditChanged()
 {
     if (!Settings::getInstance().getTypingNotification()) {

src/widget/form/chatform.h

@@ -72,6 +72,7 @@ public slots:
     void onAvEnd(uint32_t friendId, bool error);
     void onAvatarChanged(const ToxPk& friendPk, const QPixmap& pic);
     void onFileNameChanged(const ToxPk& friendPk);
+    void onExtensionSupportChanged(ExtensionSet extensions);
     void clearChatArea();
     void onShowMessagesClicked();
     void onSplitterMoved(int pos, int index);