-ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) : QGraphicsItem(parent), _index(index_) {
- _fontMetrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
- _layout = 0;
- _lines = 0;
-}
-
-ChatItem::~ChatItem() {
-
-}
-
-QVariant ChatItem::data(int role) const {
- if(!_index.isValid()) {
- qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
- return QVariant();
- }
- return _index.data(role);
-}
-
-int ChatItem::setWidth(int w) {
- w -= 10;
- if(w == _boundingRect.width()) return _boundingRect.height();
- int h = heightForWidth(w);
- _boundingRect.setWidth(w);
- _boundingRect.setHeight(h);
- if(haveLayout()) updateLayout();
- return h;
-}
-
-int ChatItem::heightForWidth(int width) {
- if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
- return fontMetrics()->lineSpacing(); // only contents can be multi-line
-
- ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
- _lines = 1;
- qreal w = 0;
- for(int i = 0; i < wrapList.count(); i++) {
- w += wrapList.at(i).width;
- if(w <= width) {
- w += wrapList.at(i).trailing;
- continue;
- }
- _lines++;
- w = wrapList.at(i).width;
- while(w >= width) { // handle words longer than a line
- _lines++;
- // We do not want to compute an exact split position (that would require us to calculate glyph widths
- // and also apply formats in this step...)
- // Just using width should be a good estimate, but since a character can't be split in the middle, we
- // subtract averageCharWidth as well... sometimes this won't be enough, but meh.
- w -= width - fontMetrics()->averageCharWidth();
- }
- w += wrapList.at(i).trailing;
- }
- return _lines * fontMetrics()->lineSpacing();
-}
-
-void ChatItem::layout() {
- if(haveLayout()) return;
- _layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
-
- QTextOption option;
- option.setWrapMode(QTextOption::WrapAnywhere);
- _layout->setTextOption(option);
-
- // Convert format information into a FormatRange
- QList<QTextLayout::FormatRange> formatRanges;
- UiStyle::FormatList formatList = data(MessageModel::FormatRole).value<UiStyle::FormatList>();
- QTextLayout::FormatRange range;
- int i = 0;
- for(i = 0; i < formatList.count(); i++) {
- range.format = QtUi::style()->mergedFormat(formatList.at(i).second);
- range.start = formatList.at(i).first;
- if(i > 0) formatRanges.last().length = range.start - formatRanges.last().start;
- formatRanges.append(range);
- }
- if(i > 0) formatRanges.last().length = _layout->text().length() - formatRanges.last().start;
- _layout->setAdditionalFormats(formatRanges);
- updateLayout();
-}
-
-void ChatItem::updateLayout() {
- if(!haveLayout()) layout();
-
- // Now layout
- ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
- if(!wrapList.count()) return; // empty chatitem
- int wordidx = 0;
- ChatLineModel::Word word = wrapList.at(0);
-
- qreal h = 0;
- _layout->beginLayout();
- forever {
- QTextLine line = _layout->createLine();
- if (!line.isValid())
- break;
-
- if(word.width >= width()) {
- line.setLineWidth(width());
- word.width -= line.naturalTextWidth();
- word.start = line.textStart() + line.textLength();
- } else {
- int w = 0;
- while((w += word.width) <= width() && wordidx < wrapList.count()) {
- w += word.trailing;
- if(++wordidx < wrapList.count()) word = wrapList.at(wordidx);
+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();
+ }
+ }