// Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include "chatdialog.h" #include #include #include #include #include ChatDialog::ChatDialog(QWidget *parent) : QDialog(parent) { setupUi(this); lineEdit->setFocusPolicy(Qt::StrongFocus); textEdit->setFocusPolicy(Qt::NoFocus); textEdit->setReadOnly(true); listWidget->setFocusPolicy(Qt::NoFocus); connect(lineEdit, &QLineEdit::returnPressed, this, &ChatDialog::returnPressed); connect(&client, &Client::newMessage, this, &ChatDialog::appendMessage); connect(&client, &Client::newParticipant, this, &ChatDialog::newParticipant); connect(&client, &Client::participantLeft, this, &ChatDialog::participantLeft); myNickName = client.nickName(); newParticipant(myNickName); tableFormat.setBorder(0); QTimer::singleShot(10 * 1000, this, &ChatDialog::showInformation); } void ChatDialog::appendMessage(const QString &from, const QString &message) { if (from.isEmpty() || message.isEmpty()) return; QTextCursor cursor(textEdit->textCursor()); cursor.movePosition(QTextCursor::End); QTextTable *table = cursor.insertTable(1, 2, tableFormat); table->cellAt(0, 0).firstCursorPosition().insertText('<' + from + "> "); table->cellAt(0, 1).firstCursorPosition().insertText(message); QScrollBar *bar = textEdit->verticalScrollBar(); bar->setValue(bar->maximum()); } void ChatDialog::returnPressed() { QString text = lineEdit->text(); if (text.isEmpty()) return; if (text.startsWith(QChar('/'))) { QColor color = textEdit->textColor(); textEdit->setTextColor(Qt::red); textEdit->append(tr("! Unknown command: %1") .arg(text.left(text.indexOf(' ')))); textEdit->setTextColor(color); } else { client.sendMessage(text); appendMessage(myNickName, text); } lineEdit->clear(); } void ChatDialog::newParticipant(const QString &nick) { if (nick.isEmpty()) return; QColor color = textEdit->textColor(); textEdit->setTextColor(Qt::gray); textEdit->append(tr("* %1 has joined").arg(nick)); textEdit->setTextColor(color); listWidget->addItem(nick); } void ChatDialog::participantLeft(const QString &nick) { if (nick.isEmpty()) return; QList items = listWidget->findItems(nick, Qt::MatchExactly); if (items.isEmpty()) return; delete items.at(0); QColor color = textEdit->textColor(); textEdit->setTextColor(Qt::gray); textEdit->append(tr("* %1 has left").arg(nick)); textEdit->setTextColor(color); } void ChatDialog::showInformation() { if (listWidget->count() == 1) { QMessageBox::information(this, tr("Chat"), tr("Launch several instances of this " "program on your local network and " "start chatting!")); } }