feat(toxid): Show NoSpam and checksum parts of ToxID in colors.

Also added the explanation to the ToxID tooltip message.

src/widget/form/profileform.cpp

@@ -62,8 +62,6 @@ ProfileForm::ProfileForm(QWidget* parent)
 
     // tox
     toxId = new ClickableTE();
-    toxId->setReadOnly(true);
-    toxId->setFrame(false);
     toxId->setFont(Style::getFont(Style::Small));
     toxId->setToolTip(bodyUI->toxId->toolTip());
 
@@ -213,13 +211,11 @@ void ProfileForm::showProfilePictureContextMenu(const QPoint& point)
 
 void ProfileForm::copyIdClicked()
 {
-    toxId->selectAll();
     QString txt = toxId->text();
-    txt.replace('\n', "");
+    txt.remove(QRegularExpression("<[^>]*>"));
     QApplication::clipboard()->setText(txt, QClipboard::Clipboard);
     if (QApplication::clipboard()->supportsSelection())
         QApplication::clipboard()->setText(txt, QClipboard::Selection);
-    toxId->setCursorPosition(0);
 
     if (!hasCheck) {
         bodyUI->toxIdLabel->setText(bodyUI->toxIdLabel->text() + " ✔");
@@ -245,8 +241,12 @@ void ProfileForm::onSelfAvatarLoaded(const QPixmap& pic)
 
 void ProfileForm::setToxId(const ToxId& id)
 {
-    toxId->setText(id.toString());
-    toxId->setCursorPosition(0);
+    auto idString = id.toString();
+    static const QString ToxIdColor = QStringLiteral("%1<span style='color:blue'>%2</span><span style='color:gray'>%3</span>");
+    toxId->setText(ToxIdColor
+      .arg(idString.mid(0, 64))
+      .arg(idString.mid(64, 8))
+      .arg(idString.mid(72, 4)));
 
     delete qr;
     qr = new QRWidget();
@@ -466,7 +466,8 @@ void ProfileForm::retranslateUi()
     // We have to add the toxId tooltip here and not in the .ui or Qt won't know how to translate it
     // dynamically
     toxId->setToolTip(tr("This bunch of characters tells other Tox clients how to contact "
-                         "you.\nShare it with your friends to communicate."));
+                         "you.\nShare it with your friends to communicate.\n\n"
+                         "This ID includes the NoSpam code (in blue), and the checksum (in gray)."));
 }
 
 void ProfileForm::showRegisterToxme()

src/widget/form/profileform.h

@@ -36,7 +36,7 @@ namespace Ui {
 class IdentitySettings;
 }
 
-class ClickableTE : public QLineEdit
+class ClickableTE : public QLabel
 {
     Q_OBJECT
 public:

src/widget/form/profileform.ui

@@ -206,12 +206,12 @@ Share it with your friends to communicate.</string>
            </widget>
           </item>
           <item>
-           <widget class="QLineEdit" name="toxId">
+           <widget class="QLabel" name="toxId">
             <property name="accessibleDescription">
              <string>Your Tox ID</string>
             </property>
-            <property name="frame">
-             <bool>true</bool>
+            <property name="textFormat">
+             <enum>Qt::RichText</enum>
             </property>
            </widget>
           </item>