feat(genericchatform): add "Quote selected text" feature to chat window

add "Quote selected text" feature to chat window context menu and set keyboard shortcut ALT+Q

src/widget/form/genericchatform.cpp

@@ -191,6 +191,10 @@ GenericChatForm::GenericChatForm(QWidget *parent)
                                     QString(), this, SLOT(onSaveLogClicked()));
     clearAction = menu.addAction(QIcon::fromTheme("edit-clear"),
                                  QString(), this, SLOT(clearChatArea(bool)));
+
+    quoteAction = menu.addAction(QIcon(),
+                                 QString(), this, SLOT(quoteSelectedText()));
+
     menu.addSeparator();
 
     connect(emoteButton, &QPushButton::clicked,
@@ -199,6 +203,7 @@ GenericChatForm::GenericChatForm(QWidget *parent)
             this, &GenericChatForm::onChatContextMenuRequested);
 
     new QShortcut(Qt::CTRL + Qt::SHIFT + Qt::Key_L, this, SLOT(clearChatArea()));
+    new QShortcut(Qt::ALT + Qt::Key_Q, this, SLOT(quoteSelectedText()));
 
     chatWidget->setStyleSheet(Style::getStylesheet(":/ui/chatArea/chatArea.css"));
     headWidget->setStyleSheet(Style::getStylesheet(":/ui/chatArea/chatHead.css"));
@@ -562,6 +567,26 @@ void GenericChatForm::onShowMessagesClicked()
     }
 }
 
+void GenericChatForm::quoteSelectedText()
+{
+    QString selectedText = chatWidget->getSelectedText();
+
+    if (selectedText.isEmpty())
+        return;
+
+    // forming pretty quote text
+    // 1. insert "> " to the begining of quote;
+    // 2. replace all possible line terminators with "\n> ";
+    // 3. append new line to the end of quote.
+    QString quote = selectedText;
+
+    quote.insert(0, "> ");
+    quote.replace(QRegExp(QString("\r\n|[\r\n\u2028\u2029]")), QString("\n> "));
+    quote.append("\n");
+
+    msgEdit->append(quote);
+}
+
 void GenericChatForm::retranslateUi()
 {
     QString callObjectName = callButton->objectName();
@@ -587,6 +612,7 @@ void GenericChatForm::retranslateUi()
     screenshotButton->setToolTip(tr("Send a screenshot"));
     saveChatAction->setText(tr("Save chat log"));
     clearAction->setText(tr("Clear displayed messages"));
+    quoteAction->setText(tr("Quote selected text"));
 }
 
 void GenericChatForm::showNetcam()

src/widget/form/genericchatform.h

@@ -91,6 +91,7 @@ protected slots:
     void hideFileMenu();
     void onShowMessagesClicked();
     void onSplitterMoved(int pos, int index);
+    void quoteSelectedText();
 
 private:
     void retranslateUi();
@@ -109,7 +110,7 @@ protected slots:
     virtual bool eventFilter(QObject* object, QEvent* event) final override;
 
 protected:
-    QAction* saveChatAction, *clearAction;
+    QAction* saveChatAction, *clearAction, *quoteAction;
     ToxId previousId;
     QDateTime prevMsgDateTime;
     Widget *parent;

translations/ru.ts

@@ -1175,6 +1175,10 @@ will be sent to them when they appear online to you.</source>
         <source>Clear displayed messages</source>
         <translation>Очистить показываемые сообщения</translation>
     </message>
+    <message>
+        <source>Quote selected text</source>
+        <translation>Цитировать выделенное</translation>
+    </message>
     <message>
         <source>Not sent</source>
         <translation>Не отправлено</translation>