1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include <QApplication>
23 #include <QDesktopServices>
24 #include <QFontMetrics>
25 #include <QGraphicsSceneMouseEvent>
28 #include <QTextLayout>
33 #include "chatlinemodel.h"
35 #include "qtuistyle.h"
37 ChatItem::ChatItem(const qreal &width, const qreal &height, const QPointF &pos, QGraphicsItem *parent)
38 : QGraphicsItem(parent),
40 _boundingRect(0, 0, width, height),
41 _selectionMode(NoSelection),
44 setAcceptHoverEvents(true);
49 ChatItem::~ChatItem() {
53 QVariant ChatItem::data(int role) const {
54 QModelIndex index = model()->index(row(), column());
55 if(!index.isValid()) {
56 qWarning() << "ChatItem::data(): model index is invalid!" << index;
59 return model()->data(index, role);
62 QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) const {
63 QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
66 option.setWrapMode(wrapMode);
67 option.setAlignment(alignment);
68 layout->setTextOption(option);
70 QList<QTextLayout::FormatRange> formatRanges
71 = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
72 layout->setAdditionalFormats(formatRanges);
76 void ChatItem::doLayout() {
77 QTextLayout *layout_ = layout();
78 layout_->beginLayout();
79 QTextLine line = layout_->createLine();
81 line.setLineWidth(width());
82 line.setPosition(QPointF(0,0));
87 void ChatItem::clearLayout() {
92 ChatItemPrivate *ChatItem::privateData() const {
94 ChatItem *that = const_cast<ChatItem *>(this);
95 that->_data = that->newPrivateData();
101 // NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
102 // This is a deliberate trade-off. (-> selectFmt creation, data() call)
103 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
104 Q_UNUSED(option); Q_UNUSED(widget);
105 painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
106 QVector<QTextLayout::FormatRange> formats = additionalFormats();
107 QTextLayout::FormatRange selectFmt = selectionFormat();
108 if(selectFmt.format.isValid()) formats.append(selectFmt);
109 layout()->draw(painter, QPointF(0,0), formats, boundingRect());
112 // uncomment partially or all of the following stuff:
114 // 0) alternativ painter color for debug stuff
116 // painter->setPen(Qt::red);
118 // painter->setPen(Qt::blue);
119 // 1) draw wordwrap points in the first line
120 // if(column() == 2) {
121 // ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
122 // foreach(ChatLineModel::Word word, wrapList) {
123 // if(word.endX > width())
125 // painter->drawLine(word.endX, 0, word.endX, height());
128 // 2) draw MsgId over the time column
129 // if(column() == 0) {
130 // QString msgIdString = QString::number(data(MessageModel::MsgIdRole).value<MsgId>().toInt());
131 // QPointF bottomPoint = boundingRect().bottomLeft();
132 // bottomPoint.ry() -= 2;
133 // painter->drawText(bottomPoint, msgIdString);
135 // 3) draw bounding rect
136 // painter->drawRect(_boundingRect.adjusted(0, 0, -1, -1));
139 qint16 ChatItem::posToCursor(const QPointF &pos) {
140 if(pos.y() > height()) return data(MessageModel::DisplayRole).toString().length();
141 if(pos.y() < 0) return 0;
142 for(int l = layout()->lineCount() - 1; l >= 0; l--) {
143 QTextLine line = layout()->lineAt(l);
144 if(pos.y() >= line.y()) {
145 return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
151 void ChatItem::setFullSelection() {
152 if(_selectionMode != FullSelection) {
153 _selectionMode = FullSelection;
158 void ChatItem::clearSelection() {
159 _selectionMode = NoSelection;
163 void ChatItem::continueSelecting(const QPointF &pos) {
164 _selectionMode = PartialSelection;
165 _selectionEnd = posToCursor(pos);
169 QTextLayout::FormatRange ChatItem::selectionFormat() const {
170 QTextLayout::FormatRange selectFmt;
171 if(_selectionMode != NoSelection) {
172 selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
173 selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
174 if(_selectionMode == PartialSelection) {
175 selectFmt.start = qMin(_selectionStart, _selectionEnd);
176 selectFmt.length = qAbs(_selectionStart - _selectionEnd);
177 } else { // FullSelection
179 selectFmt.length = data(MessageModel::DisplayRole).toString().length();
182 selectFmt.start = -1;
183 selectFmt.length = 0;
188 QList<QRectF> ChatItem::findWords(const QString &searchWord, Qt::CaseSensitivity caseSensitive) {
189 QList<QRectF> resultList;
190 const QAbstractItemModel *model_ = model();
194 QString plainText = model_->data(model_->index(row(), column()), MessageModel::DisplayRole).toString();
195 QList<int> indexList;
196 int searchIdx = plainText.indexOf(searchWord, 0, caseSensitive);
197 while(searchIdx != -1) {
198 indexList << searchIdx;
199 searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
202 bool hadPrivateData = hasPrivateData();
204 foreach(int idx, indexList) {
205 QTextLine line = layout()->lineForTextPosition(idx);
206 qreal x = line.cursorToX(idx);
207 qreal width = line.cursorToX(idx + searchWord.count()) - x;
208 qreal height = line.height();
209 qreal y = height * line.lineNumber();
210 resultList << QRectF(x, y, width, height);
218 void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
219 if(event->buttons() == Qt::LeftButton) {
220 chatScene()->setSelectingItem(this);
221 _selectionStart = _selectionEnd = posToCursor(event->pos());
222 _selectionMode = NoSelection; // will be set to PartialSelection by mouseMoveEvent
230 void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
231 if(event->buttons() == Qt::LeftButton) {
232 if(contains(event->pos())) {
233 qint16 end = posToCursor(event->pos());
234 if(end != _selectionEnd) {
236 _selectionMode = (_selectionStart != _selectionEnd ? PartialSelection : NoSelection);
241 chatScene()->startGlobalSelection(this, event->pos());
249 void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
250 if(_selectionMode != NoSelection && !event->buttons() & Qt::LeftButton) {
251 _selectionEnd = posToCursor(event->pos());
253 = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
254 chatScene()->putToClipboard(selection);
261 // ************************************************************
263 // ************************************************************
265 void SenderChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
266 Q_UNUSED(option); Q_UNUSED(widget);
268 painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
269 qreal layoutWidth = layout()->minimumWidth();
271 if(chatScene()->senderCutoffMode() == ChatScene::CutoffLeft)
272 offset = qMin(width() - layoutWidth, (qreal)0);
274 offset = qMax(layoutWidth - width(), (qreal)0);
276 QTextLayout::FormatRange selectFmt = selectionFormat();
278 if(layoutWidth > width()) {
279 // Draw a nice gradient for longer items
280 // Qt's text drawing with a gradient brush sucks, so we use an alpha-channeled pixmap instead
281 QPixmap pixmap(layout()->boundingRect().toRect().size());
282 pixmap.fill(Qt::transparent);
283 QPainter pixPainter(&pixmap);
284 layout()->draw(&pixPainter, QPointF(qMax(offset, (qreal)0), 0), QVector<QTextLayout::FormatRange>() << selectFmt);
287 // Create alpha channel mask
288 QPixmap mask(pixmap.size());
289 QPainter maskPainter(&mask);
290 QLinearGradient gradient;
292 gradient.setStart(0, 0);
293 gradient.setFinalStop(12, 0);
294 gradient.setColorAt(0, Qt::black);
295 gradient.setColorAt(1, Qt::white);
297 gradient.setStart(width()-10, 0);
298 gradient.setFinalStop(width(), 0);
299 gradient.setColorAt(0, Qt::white);
300 gradient.setColorAt(1, Qt::black);
302 maskPainter.fillRect(boundingRect(), gradient);
303 pixmap.setAlphaChannel(mask);
304 painter->drawPixmap(0, 0, pixmap);
306 layout()->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>() << selectFmt, boundingRect());
310 // ************************************************************
312 // ************************************************************
313 ContentsChatItem::ContentsChatItem(const qreal &width, const QPointF &pos, QGraphicsItem *parent)
314 : ChatItem(0, 0, pos, parent)
316 const QAbstractItemModel *model_ = model();
317 QModelIndex index = model_->index(row(), column());
318 _fontMetrics = QtUi::style()->fontMetrics(model_->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
320 setGeometryByWidth(width);
323 qreal ContentsChatItem::setGeometryByWidth(qreal w) {
325 prepareGeometryChange();
329 WrapColumnFinder finder(this);
330 while(finder.nextWrapColumn() > 0)
332 setHeight(lines * fontMetrics()->lineSpacing());
337 void ContentsChatItem::doLayout() {
338 ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
339 if(!wrapList.count()) return; // empty chatitem
342 WrapColumnFinder finder(this);
343 layout()->beginLayout();
345 QTextLine line = layout()->createLine();
349 int col = finder.nextWrapColumn();
350 line.setNumColumns(col >= 0 ? col - line.textStart() : layout()->text().length());
351 line.setPosition(QPointF(0, h));
352 h += fontMetrics()->lineSpacing();
354 layout()->endLayout();
357 // NOTE: This method is not threadsafe and not reentrant!
358 // (RegExps are not constant while matching, and they are static here for efficiency)
359 QList<ContentsChatItem::Clickable> ContentsChatItem::findClickables() const {
361 static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
362 static QString urlChars("(?:[,.;:]*[\\w\\-~@/?&=+$()!%#*|{}\\[\\]])");
364 static QRegExp regExp[] = {
366 // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
367 QRegExp(QString("((?:(?:https?://|s?ftp://|irc://|mailto:)|www)%1+)%2").arg(urlChars, urlEnd), Qt::CaseInsensitive),
370 // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
371 QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b", Qt::CaseInsensitive)
373 // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
376 static const int regExpCount = 2; // number of regexps in the array above
378 qint16 matches[] = { 0, 0, 0 };
379 qint16 matchEnd[] = { 0, 0, 0 };
381 QString str = data(ChatLineModel::DisplayRole).toString();
383 QList<Clickable> result;
390 minidx = str.length();
391 for(int i = 0; i < regExpCount; i++) {
392 if(matches[i] < 0 || matchEnd[i] > str.length()) continue;
393 if(idx >= matchEnd[i]) {
394 matches[i] = str.indexOf(regExp[i], qMax(matchEnd[i], idx));
395 if(matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
397 if(matches[i] >= 0 && matches[i] < minidx) {
403 idx = matchEnd[type];
404 if(type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
405 if(!str.mid(matches[type], matchEnd[type]-matches[type]).contains('(')) matchEnd[type]--;
407 result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
412 if(!result.isEmpty()) qDebug() << str;
413 foreach(Clickable click, result) {
414 qDebug() << str.mid(click.start, click.length);
420 QVector<QTextLayout::FormatRange> ContentsChatItem::additionalFormats() const {
421 // mark a clickable if hovered upon
422 QVector<QTextLayout::FormatRange> fmt;
423 if(privateData()->currentClickable.isValid()) {
424 Clickable click = privateData()->currentClickable;
425 QTextLayout::FormatRange f;
426 f.start = click.start;
427 f.length = click.length;
428 f.format.setFontUnderline(true);
434 void ContentsChatItem::endHoverMode() {
435 if(hasPrivateData()) {
436 if(privateData()->currentClickable.isValid()) {
437 setCursor(Qt::ArrowCursor);
438 privateData()->currentClickable = Clickable();
445 void ContentsChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
446 privateData()->hasDragged = false;
447 ChatItem::mousePressEvent(event);
450 void ContentsChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
451 if(!event->buttons() && !privateData()->hasDragged) {
453 Clickable click = privateData()->currentClickable;
454 if(click.isValid()) {
455 QString str = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
458 if(!str.contains("://"))
459 str = "http://" + str;
460 QDesktopServices::openUrl(QUrl::fromEncoded(str.toAscii()));
462 case Clickable::Channel:
463 // TODO join or whatever...
470 ChatItem::mouseReleaseEvent(event);
473 void ContentsChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
474 // mouse move events always mean we're not hovering anymore...
476 // also, check if we have dragged the mouse
477 if(hasPrivateData() && !privateData()->hasDragged && event->buttons() & Qt::LeftButton
478 && (event->buttonDownScreenPos(Qt::LeftButton) - event->screenPos()).manhattanLength() >= QApplication::startDragDistance())
479 privateData()->hasDragged = true;
480 ChatItem::mouseMoveEvent(event);
483 void ContentsChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
488 void ContentsChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
489 bool onClickable = false;
490 qint16 idx = posToCursor(event->pos());
491 for(int i = 0; i < privateData()->clickables.count(); i++) {
492 Clickable click = privateData()->clickables.at(i);
493 if(idx >= click.start && idx < click.start + click.length) {
494 if(click.type == Clickable::Url) {
496 showWebPreview(click);
497 } else if(click.type == Clickable::Channel) {
498 // TODO: don't make clickable if it's our own name
499 //onClickable = true; //FIXME disabled for now
502 setCursor(Qt::PointingHandCursor);
503 privateData()->currentClickable = click;
509 if(!onClickable) endHoverMode();
513 void ContentsChatItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
514 qint16 idx = posToCursor(event->pos());
515 for(int i = 0; i < privateData()->clickables.count(); i++) {
516 Clickable click = privateData()->clickables.at(i);
517 if(idx >= click.start && idx < click.start + click.length) {
518 if(click.type == Clickable::Url) {
520 QAction *copyToClipboard = menu.addAction(QObject::tr("Copy to Clipboard"));
521 QAction *selected = menu.exec(event->screenPos());
522 if(selected == copyToClipboard) {
523 QString url = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
525 QApplication::clipboard()->setText(url, QClipboard::Selection);
528 QApplication::clipboard()->setText(url);
536 void ContentsChatItem::showWebPreview(const Clickable &click) {
540 QTextLine line = layout()->lineForTextPosition(click.start);
541 qreal x = line.cursorToX(click.start);
542 qreal width = line.cursorToX(click.start + click.length) - x;
543 qreal height = line.height();
544 qreal y = height * line.lineNumber();
546 QPointF topLeft = scenePos() + QPointF(x, y);
547 QRectF urlRect = QRectF(topLeft.x(), topLeft.y(), width, height);
549 QString url = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
550 if(!url.contains("://"))
551 url = "http://" + url;
552 chatScene()->loadWebPreview(this, url, urlRect);
556 void ContentsChatItem::clearWebPreview() {
558 chatScene()->clearWebPreview(this);
562 /*************************************************************************************************/
564 ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
567 wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
574 ContentsChatItem::WrapColumnFinder::~WrapColumnFinder() {
578 qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
579 if(wordidx >= wrapList.count())
583 qreal targetWidth = lineCount * item->width() + choppedTrailing;
585 qint16 start = wordidx;
586 qint16 end = wrapList.count() - 1;
588 // check if the whole line fits
589 if(wrapList.at(end).endX <= targetWidth) // || start == end)
592 // check if we have a very long word that needs inter word wrap
593 if(wrapList.at(start).endX > targetWidth) {
594 if(!line.isValid()) {
595 layout = item->createLayout(QTextOption::NoWrap);
596 layout->beginLayout();
597 line = layout->createLine();
600 return line.xToCursor(targetWidth, QTextLine::CursorOnCharacter);
604 if(start + 1 == end) {
606 const ChatLineModel::Word &lastWord = wrapList.at(start); // the last word we were able to squeeze in
608 // both cases should be cought preliminary
609 Q_ASSERT(lastWord.endX <= targetWidth); // ensure that "start" really fits in
610 Q_ASSERT(end < wrapList.count()); // ensure that start isn't the last word
612 choppedTrailing += lastWord.trailing - (targetWidth - lastWord.endX);
613 return wrapList.at(wordidx).start;
616 qint16 pivot = (end + start) / 2;
617 if(wrapList.at(pivot).endX > targetWidth) {