Use invite text layout for selection and wrapped emoji positions

tools/chatgui/src/messagedelegate.cpp

@@ -823,6 +823,9 @@ static void drawAnimatedEmojiOverlay(QPainter *p, const QFont &font,
 
         if (!para.isEmpty()) {
             QTextLayout layout(para, font);
+            if (text.contains(QStringLiteral("utun://"))) {
+                QTextOption wrap; wrap.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere); layout.setTextOption(wrap);
+            }
             layout.beginLayout();
             qreal localY = 0;
             while (true) {
@@ -839,7 +842,7 @@ static void drawAnimatedEmojiOverlay(QPainter *p, const QFont &font,
                     const QString &unicode = it.key();
                     int pos = text.indexOf(unicode, ls);
                     while (pos >= 0 && pos + unicode.length() <= le) {
-                        int linePos = pos - globalChar - line.textStart();
+                        int linePos = pos - globalChar;
                         int cp1 = linePos, cp2 = linePos + unicode.length();
                         qreal x1 = line.cursorToX(&cp1);
                         qreal x2 = line.cursorToX(&cp2);
@@ -1368,14 +1371,34 @@ void MessageDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
     painter->setFont(textFont);
 
     QString msgText = index.data(MsgTextRole).toString();
-    if (msgText.contains(QStringLiteral("utun://"))) {
+    const bool hasInvite = msgText.contains(QStringLiteral("utun://"));
+    if (hasInvite) {
         QString display = msgText; display.replace('\n', QChar(0x2028));
         QTextLayout layout(display, textFont);
         layoutInviteText(layout, L.textRect.width());
-        layout.draw(painter, L.textRect.topLeft());
+        QVector<QTextLayout::FormatRange> selections;
+        if (singleTextSel && cv) {
+            auto cursorAt = [&](const QPoint& point) {
+                for (int i = 0; i < layout.lineCount(); ++i) {
+                    const auto line = layout.lineAt(i);
+                    if (point.y() < line.y() + line.height()) return line.xToCursor(point.x());
+                }
+                return msgText.length();
+            };
+            const auto& selection = cv->textSelection();
+            int start = cursorAt(selection.clickPos - L.textRect.topLeft());
+            int end = cursorAt(selection.dragPos - L.textRect.topLeft());
+            if (start > end) qSwap(start, end);
+            if (start == end && end < msgText.length()) ++end;
+            const_cast<ChatView*>(cv)->setTextSelChars(start, end);
+            QTextLayout::FormatRange range;
+            range.start = start; range.length = end - start; range.format.setBackground(QColor(0x33, 0x90, 0xEC, 60));
+            selections.append(range);
+        }
+        layout.draw(painter, L.textRect.topLeft(), selections);
     } else painter->drawText(L.textRect, Qt::AlignLeft | Qt::TextWordWrap, msgText);
 
-    if (singleTextSel && cv) {
+    if (singleTextSel && cv && !hasInvite) {
         const auto &ts = cv->textSelection();
         QPoint localP1(ts.clickPos.x() - L.textRect.left(),
                        ts.clickPos.y() - L.textRect.top());

tools/chatgui/tests/test_invite_links.cpp

@@ -53,6 +53,20 @@ private slots:
         QCOMPARE(clicked.count(), 1); QCOMPARE(clicked.last().first().toString(), first);
         QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, secondPoint);
         QCOMPARE(clicked.count(), 2); QCOMPARE(clicked.last().first().toString(), second);
+        /* Выделение использует те же перенесённые строки, что и отрисовка ссылки. */
+        QPoint dragEnd = firstPoint + QPoint(20, 0);
+        QTest::mousePress(view.viewport(), Qt::LeftButton, Qt::NoModifier, firstPoint);
+        QMouseEvent drag(QEvent::MouseMove, dragEnd, view.viewport()->mapToGlobal(dragEnd),
+                         Qt::NoButton, Qt::LeftButton, Qt::NoModifier);
+        QApplication::sendEvent(view.viewport(), &drag);
+        QTest::mouseRelease(view.viewport(), Qt::LeftButton, Qt::NoModifier, dragEnd);
+        QTest::qWait(20);
+        QCOMPARE(clicked.count(), 2);
+        const auto selection = view.textSelection();
+        QVERIFY(selection.startChar >= text.indexOf(first));
+        QVERIFY(selection.endChar <= text.indexOf(first) + first.length());
+        QVERIFY(selection.endChar > selection.startChar);
+        QVERIFY(selection.endChar - selection.startChar < 20);
     }
 
     void memberPlusTargetsOtherMembersOnly() {