+ChatItem::ChatItem(const QRectF& boundingRect, ChatLine* parent)
+ : _parent(parent)
+ , _boundingRect(boundingRect)
+ , _selectionMode(NoSelection)
+ , _selectionStart(-1)
+ , _cachedLayout(nullptr)
+{}
+
+ChatItem::~ChatItem()
+{
+ delete _cachedLayout;
+}
+
+ChatLine* ChatItem::chatLine() const
+{
+ return _parent;
+}
+
+ChatScene* ChatItem::chatScene() const
+{
+ return chatLine()->chatScene();
+}
+
+ChatView* ChatItem::chatView() const
+{
+ return chatScene()->chatView();
+}
+
+const QAbstractItemModel* ChatItem::model() const
+{
+ return chatLine()->model();
+}
+
+int ChatItem::row() const
+{
+ return chatLine()->row();
+}
+
+QPointF ChatItem::mapToLine(const QPointF& p) const
+{
+ return p + pos();
+}
+
+QPointF ChatItem::mapFromLine(const QPointF& p) const
+{
+ return p - pos();
+}
+
+// relative to the ChatLine
+QPointF ChatItem::mapToScene(const QPointF& p) const
+{
+ return chatLine()->mapToScene(p /* + pos() */);
+}
+
+QPointF ChatItem::mapFromScene(const QPointF& p) const
+{
+ return chatLine()->mapFromScene(p) /* - pos() */;
+}
+
+QVariant ChatItem::data(int role) const
+{
+ QModelIndex index = model()->index(row(), column());
+ if (!index.isValid()) {
+ qWarning() << "ChatItem::data(): model index is invalid!" << index;
+ return QVariant();
+ }
+ return model()->data(index, role);
+}
+
+QTextLayout* ChatItem::layout() const
+{
+ if (_cachedLayout)
+ return _cachedLayout;
+
+ _cachedLayout = new QTextLayout;
+ initLayout(_cachedLayout);
+ chatView()->setHasCache(chatLine());
+ return _cachedLayout;
+}
+
+void ChatItem::clearCache()
+{
+ delete _cachedLayout;
+ _cachedLayout = nullptr;
+}
+
+void ChatItem::initLayoutHelper(QTextLayout* layout, QTextOption::WrapMode wrapMode, Qt::Alignment alignment) const
+{
+ Q_ASSERT(layout);
+
+ layout->setText(data(MessageModel::DisplayRole).toString());
+
+ QTextOption option;
+ option.setWrapMode(wrapMode);
+ option.setAlignment(alignment);
+ layout->setTextOption(option);
+
+ QList<QTextLayout::FormatRange> formatRanges = QtUi::style()
+ ->toTextLayoutList(formatList(),
+ layout->text().length(),
+ data(ChatLineModel::MsgLabelRole).value<UiStyle::MessageLabel>());
+ layout->setAdditionalFormats(formatRanges);
+}
+
+void ChatItem::initLayout(QTextLayout* layout) const
+{
+ initLayoutHelper(layout, QTextOption::NoWrap);
+ doLayout(layout);
+}
+
+void ChatItem::doLayout(QTextLayout* layout) const
+{
+ layout->beginLayout();
+ QTextLine line = layout->createLine();
+ if (line.isValid()) {
+ line.setLineWidth(width());
+ line.setPosition(QPointF(0, 0));
+ }
+ layout->endLayout();
+}
+
+UiStyle::FormatList ChatItem::formatList() const
+{
+ return data(MessageModel::FormatRole).value<UiStyle::FormatList>();
+}
+
+qint16 ChatItem::posToCursor(const QPointF& posInLine) const
+{
+ QPointF pos = mapFromLine(posInLine);
+ if (pos.y() > height())
+ return data(MessageModel::DisplayRole).toString().length();
+ if (pos.y() < 0)
+ return 0;
+
+ for (int l = layout()->lineCount() - 1; l >= 0; l--) {
+ QTextLine line = layout()->lineAt(l);
+ if (pos.y() >= line.y()) {
+ return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
+ }
+ }
+ return 0;
+}
+
+void ChatItem::paintBackground(QPainter* painter)
+{
+ QVariant bgBrush;
+ if (_selectionMode == FullSelection)
+ bgBrush = data(ChatLineModel::SelectedBackgroundRole);
+ else
+ bgBrush = data(ChatLineModel::BackgroundRole);
+ if (bgBrush.isValid())
+ painter->fillRect(boundingRect(), bgBrush.value<QBrush>());
+}
+
+// NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
+// This is a deliberate trade-off. (-> selectFmt creation, data() call)
+void ChatItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
+{
+ Q_UNUSED(option);
+ Q_UNUSED(widget);
+ painter->save();
+ painter->setClipRect(boundingRect());
+ paintBackground(painter);
+
+ layout()->draw(painter, pos(), additionalFormats(), boundingRect());
+
+ // layout()->draw(painter, QPointF(0,0), formats, boundingRect());
+
+ // Debuging Stuff
+ // uncomment partially or all of the following stuff:
+ //
+ // 0) alternativ painter color for debug stuff
+ // if(row() % 2)
+ // painter->setPen(Qt::red);
+ // else
+ // painter->setPen(Qt::blue);
+ // 1) draw wordwrap points in the first line
+ // if(column() == 2) {
+ // ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+ // foreach(ChatLineModel::Word word, wrapList) {
+ // if(word.endX > width())
+ // break;
+ // painter->drawLine(word.endX, 0, word.endX, height());
+ // }
+ // }
+ // 2) draw MsgId over the time column
+ // if(column() == 0) {
+ // QString msgIdString = QString::number(data(MessageModel::MsgIdRole).value<MsgId>().toLongLong());
+ // QPointF bottomPoint = boundingRect().bottomLeft();
+ // bottomPoint.ry() -= 2;
+ // painter->drawText(bottomPoint, msgIdString);
+ // }
+ // 3) draw bounding rect
+ // painter->drawRect(_boundingRect.adjusted(0, 0, -1, -1));
+
+ painter->restore();
+}
+
+void ChatItem::overlayFormat(UiStyle::FormatList& fmtList, quint16 start, quint16 end, UiStyle::FormatType overlayFmt) const
+{
+ for (size_t i = 0; i < fmtList.size(); i++) {
+ int fmtStart = fmtList.at(i).first;
+ int fmtEnd = (i < fmtList.size() - 1 ? fmtList.at(i + 1).first : data(MessageModel::DisplayRole).toString().length());
+
+ if (fmtEnd <= start)
+ continue;
+ if (fmtStart >= end)
+ break;
+
+ // split the format if necessary
+ if (fmtStart < start) {
+ fmtList.insert(fmtList.begin() + i, fmtList.at(i));
+ fmtList[++i].first = start;
+ }
+ if (end < fmtEnd) {
+ fmtList.insert(fmtList.begin() + i, fmtList.at(i));
+ fmtList[i + 1].first = end;
+ }
+
+ fmtList[i].second.type |= overlayFmt;
+ }
+}
+
+QVector<QTextLayout::FormatRange> ChatItem::additionalFormats() const
+{
+ // Calculate formats to overlay (only) if there's a selection, and/or a hovered clickable
+ if (!hasSelection() && !hasActiveClickable()) {
+ return {};
+ }
+
+ using Label = UiStyle::MessageLabel;
+ using Format = UiStyle::Format;
+
+ auto itemLabel = data(ChatLineModel::MsgLabelRole).value<Label>();
+ const auto& fmtList = formatList();
+
+ struct LabelFormat
+ {
+ quint16 offset;
+ Format format;
+ Label label;
+ };
+
+ // Transform formatList() into an extended list of LabelFormats
+ std::vector<LabelFormat> labelFmtList;
+ std::transform(fmtList.cbegin(), fmtList.cend(), std::back_inserter(labelFmtList), [itemLabel](const std::pair<quint16, Format>& f) {
+ return LabelFormat{f.first, f.second, itemLabel};
+ });
+ // Append dummy element to avoid special-casing handling the last real format
+ labelFmtList.push_back(LabelFormat{quint16(data(MessageModel::DisplayRole).toString().length()), Format(), itemLabel});
+
+ // Apply the given label to the given range in the format list, splitting formats as necessary
+ auto applyLabel = [&labelFmtList](quint16 start, quint16 end, Label label) {
+ size_t i = 0;
+
+ // Skip unaffected formats
+ for (; i < labelFmtList.size() - 1; ++i) {
+ if (labelFmtList[i + 1].offset > start)
+ break;
+ }
+ // Range start doesn't align; split affected format and let the index point to the newly inserted copy
+ if (labelFmtList[i].offset < start) {
+ labelFmtList.insert(labelFmtList.begin() + i, labelFmtList[i]);
+ labelFmtList[++i].offset = start;
+ }
+
+ // Apply label to formats fully affected
+ for (; i < labelFmtList.size() - 1; ++i) {
+ if (labelFmtList[i + 1].offset <= end) {
+ labelFmtList[i].label |= label;
+ continue;
+ }
+ // Last affected format, split if end of range doesn't align
+ if (labelFmtList[i + 1].offset > end) {
+ labelFmtList.insert(labelFmtList.begin() + i, labelFmtList[i]);
+ labelFmtList[i].label |= label;
+ labelFmtList[i + 1].offset = end;
+ }
+ break;
+ }
+ };
+
+ // Apply selection label
+ if (hasSelection()) {
+ quint16 start, end;
+ if (_selectionMode == FullSelection) {
+ start = 0;
+ end = data(MessageModel::DisplayRole).toString().length();
+ }
+ else {
+ start = qMin(_selectionStart, _selectionEnd);
+ end = qMax(_selectionStart, _selectionEnd);
+ }
+ applyLabel(start, end, Label::Selected);
+ }
+
+ // Apply hovered label
+ if (hasActiveClickable()) {
+ applyLabel(activeClickableRange().first, activeClickableRange().second, Label::Hovered);
+ }
+
+ // Add all formats that have an extra label to the additionalFormats list
+ QList<QTextLayout::FormatRange> additionalFormats;
+ for (size_t i = 0; i < labelFmtList.size() - 1; ++i) {
+ if (labelFmtList[i].label != itemLabel) {
+ additionalFormats << QtUi::style()->toTextLayoutList({std::make_pair(labelFmtList[i].offset, labelFmtList[i].format)},
+ labelFmtList[i + 1].offset,
+ labelFmtList[i].label);
+ }
+ }
+
+ return additionalFormats.toVector();
+}
+
+bool ChatItem::hasSelection() const
+{
+ if (_selectionMode == NoSelection)
+ return false;
+ if (_selectionMode == FullSelection)
+ return true;
+ // partial
+ return _selectionStart != _selectionEnd;
+}
+
+QString ChatItem::selection() const
+{
+ if (_selectionMode == FullSelection)
+ return data(MessageModel::DisplayRole).toString();
+ if (_selectionMode == PartialSelection)
+ return data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
+ return QString();
+}
+
+void ChatItem::setSelection(SelectionMode mode, qint16 start, qint16 end)
+{
+ _selectionMode = mode;
+ _selectionStart = start;
+ _selectionEnd = end;
+ chatLine()->update();
+}
+
+void ChatItem::setFullSelection()
+{
+ if (_selectionMode != FullSelection) {
+ _selectionMode = FullSelection;
+ chatLine()->update();
+ }
+}
+
+void ChatItem::clearSelection()
+{
+ if (_selectionMode != NoSelection) {
+ _selectionMode = NoSelection;
+ chatLine()->update();
+ }
+}
+
+void ChatItem::continueSelecting(const QPointF& pos)
+{
+ _selectionMode = PartialSelection;
+ _selectionEnd = posToCursor(pos);
+ chatLine()->update();
+}
+
+bool ChatItem::isPosOverSelection(const QPointF& pos) const
+{
+ if (_selectionMode == FullSelection)
+ return true;
+ if (_selectionMode == PartialSelection) {
+ int cursor = posToCursor(pos);
+ return cursor >= qMin(_selectionStart, _selectionEnd) && cursor <= qMax(_selectionStart, _selectionEnd);
+ }
+ return false;
+}
+
+bool ChatItem::hasActiveClickable() const
+{
+ return false;
+}
+
+std::pair<quint16, quint16> ChatItem::activeClickableRange() const
+{
+ return {};
+}
+
+QList<QRectF> ChatItem::findWords(const QString& searchWord, Qt::CaseSensitivity caseSensitive)
+{
+ QList<QRectF> resultList;
+ const QAbstractItemModel* model_ = model();
+ if (!model_)
+ return resultList;
+
+ QString plainText = model_->data(model_->index(row(), column()), MessageModel::DisplayRole).toString();
+ QList<int> indexList;
+ int searchIdx = plainText.indexOf(searchWord, 0, caseSensitive);
+ while (searchIdx != -1) {
+ indexList << searchIdx;
+ searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
+ }
+
+ foreach (int idx, indexList) {
+ QTextLine line = layout()->lineForTextPosition(idx);
+ qreal x = line.cursorToX(idx);
+ qreal width = line.cursorToX(idx + searchWord.count()) - x;
+ qreal height = line.height();
+ qreal y = height * line.lineNumber();
+ resultList << QRectF(x, y, width, height);
+ }
+
+ return resultList;
+}
+
+void ChatItem::handleClick(const QPointF& pos, ChatScene::ClickMode clickMode)
+{
+ // single clicks are already handled by the scene (for clearing the selection)
+ if (clickMode == ChatScene::DragStartClick) {
+ chatScene()->setSelectingItem(this);
+ _selectionStart = _selectionEnd = posToCursor(pos);
+ _selectionMode = NoSelection; // will be set to PartialSelection by mouseMoveEvent
+ chatLine()->update();
+ }
+}
+
+void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
+{
+ if (event->buttons() == Qt::LeftButton) {
+ if (boundingRect().contains(event->pos())) {
+ qint16 end = posToCursor(event->pos());
+ if (end != _selectionEnd) {
+ _selectionEnd = end;
+ _selectionMode = (_selectionStart != _selectionEnd ? PartialSelection : NoSelection);
+ chatLine()->update();
+ }
+ }
+ else {
+ setFullSelection();
+ chatScene()->startGlobalSelection(this, event->pos());
+ }
+ event->accept();
+ }
+ else {
+ event->ignore();
+ }
+}
+
+void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent* event)
+{
+ if (event->buttons() == Qt::LeftButton)
+ event->accept();
+ else
+ event->ignore();
+}
+
+void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
+{
+ if (_selectionMode != NoSelection && event->button() == Qt::LeftButton) {
+ chatScene()->selectionToClipboard(QClipboard::Selection);
+ event->accept();
+ }
+ else
+ event->ignore();
+}