* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include <QApplication>
+#include <QClipboard>
+#include <QDesktopServices>
#include <QFontMetrics>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
+#include <QPalette>
#include <QTextLayout>
#include "chatitem.h"
#include "chatlinemodel.h"
#include "qtui.h"
+#include "qtuistyle.h"
-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(const qreal &width, const qreal &height, const QPointF &pos, QGraphicsItem *parent)
+ : QGraphicsItem(parent),
+ _data(0),
+ _boundingRect(0, 0, width, height),
+ _selectionMode(NoSelection),
+ _selectionStart(-1)
+{
+ setAcceptHoverEvents(true);
+ setZValue(20);
+ setPos(pos);
}
ChatItem::~ChatItem() {
- delete _layout;
+ delete _data;
}
QVariant ChatItem::data(int role) const {
- if(!_index.isValid()) {
- qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
+ QModelIndex index = model()->index(row(), column());
+ if(!index.isValid()) {
+ qWarning() << "ChatItem::data(): model index is invalid!" << index;
return QVariant();
}
- return _index.data(role);
+ return model()->data(index, role);
}
-int ChatItem::setWidth(int w) {
- if(w == _boundingRect.width()) return _boundingRect.height();
- _boundingRect.setWidth(w);
- int h = heightForWidth(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
-
- _lines = 1;
- WrapColumnFinder finder(this);
- while(finder.nextWrapColumn() > 0) _lines++;
- return _lines * fontMetrics()->lineSpacing();
-}
-
-QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
+QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) const {
QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
QTextOption option;
return layout;
}
-void ChatItem::updateLayout() {
- switch(data(ChatLineModel::ColumnTypeRole).toUInt()) {
- case ChatLineModel::TimestampColumn:
- if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft);
- // fallthrough
- case ChatLineModel::SenderColumn:
- if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignRight);
- _layout->beginLayout();
- {
- QTextLine line = _layout->createLine();
- if(line.isValid()) {
- line.setLineWidth(width());
- line.setPosition(QPointF(0, fontMetrics()->leading()));
- }
- _layout->endLayout();
+void ChatItem::doLayout() {
+ QTextLayout *layout_ = layout();
+ layout_->beginLayout();
+ QTextLine line = layout_->createLine();
+ if(line.isValid()) {
+ line.setLineWidth(width());
+ line.setPosition(QPointF(0,0));
+ }
+ layout_->endLayout();
+}
+
+void ChatItem::clearLayout() {
+ delete _data;
+ _data = 0;
+}
+
+ChatItemPrivate *ChatItem::privateData() const {
+ if(!_data) {
+ ChatItem *that = const_cast<ChatItem *>(this);
+ that->_data = that->newPrivateData();
+ that->doLayout();
+ }
+ return _data;
+}
+
+// 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->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
+ //if(_selectionMode == FullSelection) {
+ //painter->save();
+ //painter->fillRect(boundingRect(), QApplication::palette().brush(QPalette::Highlight));
+ //painter->restore();
+ //}
+ QVector<QTextLayout::FormatRange> formats = additionalFormats();
+ if(_selectionMode != NoSelection) {
+ QTextLayout::FormatRange selectFmt;
+ selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
+ selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
+ if(_selectionMode == PartialSelection) {
+ selectFmt.start = qMin(_selectionStart, _selectionEnd);
+ selectFmt.length = qAbs(_selectionStart - _selectionEnd);
+ } else { // FullSelection
+ selectFmt.start = 0;
+ selectFmt.length = data(MessageModel::DisplayRole).toString().length();
+ }
+ formats.append(selectFmt);
+ }
+ 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>().toInt());
+// QPointF bottomPoint = boundingRect().bottomLeft();
+// bottomPoint.ry() -= 2;
+// painter->drawText(bottomPoint, msgIdString);
+// }
+ // 3) draw bounding rect
+// painter->drawRect(_boundingRect.adjusted(0, 0, -1, -1));
+}
+
+qint16 ChatItem::posToCursor(const QPointF &pos) {
+ 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::setFullSelection() {
+ if(_selectionMode != FullSelection) {
+ _selectionMode = FullSelection;
+ update();
+ }
+}
+
+void ChatItem::clearSelection() {
+ _selectionMode = NoSelection;
+ update();
+}
+
+void ChatItem::continueSelecting(const QPointF &pos) {
+ _selectionMode = PartialSelection;
+ _selectionEnd = posToCursor(pos);
+ update();
+}
+
+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);
+ }
+
+ bool hadPrivateData = hasPrivateData();
+
+ 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);
+ }
+
+ if(!hadPrivateData)
+ clearLayout();
+ return resultList;
+}
+
+void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+ if(event->buttons() == Qt::LeftButton) {
+ chatScene()->setSelectingItem(this);
+ _selectionStart = _selectionEnd = posToCursor(event->pos());
+ _selectionMode = NoSelection; // will be set to PartialSelection by mouseMoveEvent
+ update();
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+
+void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+ if(event->buttons() == Qt::LeftButton) {
+ if(contains(event->pos())) {
+ qint16 end = posToCursor(event->pos());
+ if(end != _selectionEnd) {
+ _selectionEnd = end;
+ _selectionMode = (_selectionStart != _selectionEnd ? PartialSelection : NoSelection);
+ update();
}
+ } else {
+ setFullSelection();
+ chatScene()->startGlobalSelection(this, event->pos());
+ }
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+
+void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+ if(_selectionMode != NoSelection && !event->buttons() & Qt::LeftButton) {
+ _selectionEnd = posToCursor(event->pos());
+ QString selection
+ = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
+ chatScene()->putToClipboard(selection);
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+
+// ************************************************************
+// SenderChatItem
+// ************************************************************
+
+// ************************************************************
+// ContentsChatItem
+// ************************************************************
+ContentsChatItem::ContentsChatItem(const qreal &width, const QPointF &pos, QGraphicsItem *parent)
+ : ChatItem(0, 0, pos, parent)
+{
+ const QAbstractItemModel *model_ = model();
+ QModelIndex index = model_->index(row(), column());
+ _fontMetrics = QtUi::style()->fontMetrics(model_->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
+
+ setGeometryByWidth(width);
+}
+
+qreal ContentsChatItem::setGeometryByWidth(qreal w) {
+ if(w != width()) {
+ prepareGeometryChange();
+ setWidth(w);
+ // compute height
+ int lines = 1;
+ WrapColumnFinder finder(this);
+ while(finder.nextWrapColumn() > 0)
+ lines++;
+ setHeight(lines * fontMetrics()->lineSpacing());
+ }
+ return height();
+}
+
+void ContentsChatItem::doLayout() {
+ ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+ if(!wrapList.count()) return; // empty chatitem
+
+ qreal h = 0;
+ WrapColumnFinder finder(this);
+ layout()->beginLayout();
+ forever {
+ QTextLine line = layout()->createLine();
+ if(!line.isValid())
break;
- case ChatLineModel::ContentsColumn: {
- if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
-
- // 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;
- WrapColumnFinder finder(this);
- _layout->beginLayout();
- forever {
- QTextLine line = _layout->createLine();
- if (!line.isValid())
- break;
- int col = finder.nextWrapColumn();
- line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
+ int col = finder.nextWrapColumn();
+ line.setNumColumns(col >= 0 ? col - line.textStart() : layout()->text().length());
+ line.setPosition(QPointF(0, h));
+ h += fontMetrics()->lineSpacing();
+ }
+ layout()->endLayout();
+}
+
+// NOTE: This method is not threadsafe and not reentrant!
+// (RegExps are not constant while matching, and they are static here for efficiency)
+QList<ContentsChatItem::Clickable> ContentsChatItem::findClickables() const {
+ // For matching URLs
+ static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
+ static QString urlChars("(?:[,.;:]*[\\w\\-~@/?&=+$()!%#])");
+
+ static QRegExp regExp[] = {
+ // URL
+ // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
+ QRegExp(QString("((?:(?:https?://|s?ftp://|irc://|mailto:)|www)%1+)%2").arg(urlChars, urlEnd), Qt::CaseInsensitive),
+
+ // Channel name
+ // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
+ QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b", Qt::CaseInsensitive)
- h += fontMetrics()->leading();
- line.setPosition(QPointF(0, h));
- h += line.height();
+ // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
+ };
+
+ static const int regExpCount = 2; // number of regexps in the array above
+
+ qint16 matches[] = { 0, 0, 0 };
+ qint16 matchEnd[] = { 0, 0, 0 };
+
+ QString str = data(ChatLineModel::DisplayRole).toString();
+
+ QList<Clickable> result;
+ qint16 idx = 0;
+ qint16 minidx;
+ int type = -1;
+
+ do {
+ type = -1;
+ minidx = str.length();
+ for(int i = 0; i < regExpCount; i++) {
+ if(matches[i] < 0 || matchEnd[i] > str.length()) continue;
+ if(idx >= matchEnd[i]) {
+ matches[i] = str.indexOf(regExp[i], qMax(matchEnd[i], idx));
+ if(matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
+ }
+ if(matches[i] >= 0 && matches[i] < minidx) {
+ minidx = matches[i];
+ type = i;
+ }
+ }
+ if(type >= 0) {
+ idx = matchEnd[type];
+ if(type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
+ if(!str.mid(matches[type], matchEnd[type]-matches[type]).contains('(')) matchEnd[type]--;
}
- _layout->endLayout();
+ result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
}
- break;
+ } while(type >= 0);
+
+ /* testing
+ if(!result.isEmpty()) qDebug() << str;
+ foreach(Clickable click, result) {
+ qDebug() << str.mid(click.start, click.length);
}
+ */
+ return result;
}
-void ChatItem::clearLayout() {
- delete _layout;
- _layout = 0;
+QVector<QTextLayout::FormatRange> ContentsChatItem::additionalFormats() const {
+ // mark a clickable if hovered upon
+ QVector<QTextLayout::FormatRange> fmt;
+ if(privateData()->currentClickable.isValid()) {
+ Clickable click = privateData()->currentClickable;
+ QTextLayout::FormatRange f;
+ f.start = click.start;
+ f.length = click.length;
+ f.format.setFontUnderline(true);
+ fmt.append(f);
+ }
+ return fmt;
}
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
- Q_UNUSED(option); Q_UNUSED(widget);
- if(!haveLayout()) updateLayout();
- _layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
- //painter->drawRect(boundingRect());
+void ContentsChatItem::endHoverMode() {
+ if(hasPrivateData()) {
+ if(privateData()->currentClickable.isValid()) {
+ setCursor(Qt::ArrowCursor);
+ privateData()->currentClickable = Clickable();
+ }
+ clearWebPreview();
+ update();
+ }
+}
+void ContentsChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+ privateData()->hasDragged = false;
+ ChatItem::mousePressEvent(event);
}
-/*
-void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
- qDebug() << (void*)this << "moving" << event->pos();
- if(event->pos().y() < 0) {
- QTextCursor cursor(document());
- //cursor.insertText("foo");
- //cursor.select(QTextCursor::Document);
- event->ignore();
- } else QGraphicsTextItem::mouseMoveEvent(event);
+void ContentsChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+ if(!event->buttons() && !privateData()->hasDragged) {
+ // got a click
+ Clickable click = privateData()->currentClickable;
+ if(click.isValid()) {
+ QString str = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
+ switch(click.type) {
+ case Clickable::Url:
+ if(!str.contains("://"))
+ str = "http://" + str;
+ QDesktopServices::openUrl(str);
+ break;
+ case Clickable::Channel:
+ // TODO join or whatever...
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ ChatItem::mouseReleaseEvent(event);
+}
+
+void ContentsChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+ // mouse move events always mean we're not hovering anymore...
+ endHoverMode();
+ // also, check if we have dragged the mouse
+ if(hasPrivateData() && !privateData()->hasDragged && event->buttons() & Qt::LeftButton
+ && (event->buttonDownScreenPos(Qt::LeftButton) - event->screenPos()).manhattanLength() >= QApplication::startDragDistance())
+ privateData()->hasDragged = true;
+ ChatItem::mouseMoveEvent(event);
+}
+
+void ContentsChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
+ endHoverMode();
+ event->accept();
+}
+
+void ContentsChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
+ bool onClickable = false;
+ qint16 idx = posToCursor(event->pos());
+ for(int i = 0; i < privateData()->clickables.count(); i++) {
+ Clickable click = privateData()->clickables.at(i);
+ if(idx >= click.start && idx < click.start + click.length) {
+ if(click.type == Clickable::Url) {
+ onClickable = true;
+ showWebPreview(click);
+ } else if(click.type == Clickable::Channel) {
+ // TODO: don't make clickable if it's our own name
+ //onClickable = true; //FIXME disabled for now
+ }
+ if(onClickable) {
+ setCursor(Qt::PointingHandCursor);
+ privateData()->currentClickable = click;
+ update();
+ break;
+ }
+ }
+ }
+ if(!onClickable) endHoverMode();
+ event->accept();
+}
+
+void ContentsChatItem::showWebPreview(const Clickable &click) {
+#ifdef HAVE_WEBKIT
+ QTextLine line = layout()->lineForTextPosition(click.start);
+ qreal x = line.cursorToX(click.start);
+ qreal width = line.cursorToX(click.start + click.length) - x;
+ qreal height = line.height();
+ qreal y = height * line.lineNumber();
+
+ QPointF topLeft = scenePos() + QPointF(x, y);
+ QRectF urlRect = QRectF(topLeft.x(), topLeft.y(), width, height);
+
+ QString url = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
+ if(!url.contains("://"))
+ url = "http://" + url;
+ chatScene()->loadWebPreview(this, url, urlRect);
+#endif
+}
+
+void ContentsChatItem::clearWebPreview() {
+#ifdef HAVE_WEBKIT
+ chatScene()->clearWebPreview(this);
+#endif
}
-*/
/*************************************************************************************************/
-ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
- wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
- wordidx = 0;
- layout = 0;
- lastwrapcol = 0;
- lastwrappos = 0;
- w = 0;
+ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
+ : item(_item),
+ layout(0),
+ wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
+ wordidx(0),
+ lineCount(0),
+ choppedTrailing(0)
+{
}
-ChatItem::WrapColumnFinder::~WrapColumnFinder() {
+ContentsChatItem::WrapColumnFinder::~WrapColumnFinder() {
delete layout;
}
-int ChatItem::WrapColumnFinder::nextWrapColumn() {
- while(wordidx < wrapList.count()) {
- w += wrapList.at(wordidx).width;
- if(w >= item->width()) {
- if(lastwrapcol >= wrapList.at(wordidx).start) {
- // first word, and it doesn't fit
- if(!line.isValid()) {
- layout = item->createLayout(QTextOption::NoWrap);
- layout->beginLayout();
- line = layout->createLine();
- line.setLineWidth(item->width());
- layout->endLayout();
- }
- int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
- qreal x = line.cursorToX(idx, QTextLine::Trailing);
- w = w - wrapList.at(wordidx).width - (x - lastwrappos);
- lastwrappos = x;
- lastwrapcol = idx;
- return idx;
- }
- // not the first word, so just wrap before this
- lastwrapcol = wrapList.at(wordidx).start;
- lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
- w = 0;
- return lastwrapcol;
+qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
+ if(wordidx >= wrapList.count())
+ return -1;
+
+ lineCount++;
+ qreal targetWidth = lineCount * item->width() + choppedTrailing;
+
+ qint16 start = wordidx;
+ qint16 end = wrapList.count() - 1;
+
+ // check if the whole line fits
+ if(wrapList.at(end).endX <= targetWidth) // || start == end)
+ return -1;
+
+ // check if we have a very long word that needs inter word wrap
+ if(wrapList.at(start).endX > targetWidth) {
+ if(!line.isValid()) {
+ layout = item->createLayout(QTextOption::NoWrap);
+ layout->beginLayout();
+ line = layout->createLine();
+ layout->endLayout();
}
- w += wrapList.at(wordidx).trailing;
- wordidx++;
+ return line.xToCursor(targetWidth, QTextLine::CursorOnCharacter);
}
+
+ while(true) {
+ if(start + 1 == end) {
+ wordidx = end;
+ const ChatLineModel::Word &lastWord = wrapList.at(start); // the last word we were able to squeeze in
+
+ // both cases should be cought preliminary
+ Q_ASSERT(lastWord.endX <= targetWidth); // ensure that "start" really fits in
+ Q_ASSERT(end < wrapList.count()); // ensure that start isn't the last word
+
+ choppedTrailing += lastWord.trailing - (targetWidth - lastWord.endX);
+ return wrapList.at(wordidx).start;
+ }
+
+ qint16 pivot = (end + start) / 2;
+ if(wrapList.at(pivot).endX > targetWidth) {
+ end = pivot;
+ } else {
+ start = pivot;
+ }
+ }
+ Q_ASSERT(false);
return -1;
}
+
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