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>
31 #include "chatlinemodel.h"
34 ChatItem::ChatItem(ChatLineModel::ColumnType col, QAbstractItemModel *model, QGraphicsItem *parent)
35 : QGraphicsItem(parent),
37 _selectionMode(NoSelection),
42 QModelIndex index = model->index(row(), col);
43 _fontMetrics = QtUi::style()->fontMetrics(model->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
44 setAcceptHoverEvents(true);
48 ChatItem::~ChatItem() {
52 QVariant ChatItem::data(int role) const {
53 QModelIndex index = model()->index(row(), column());
54 if(!index.isValid()) {
55 qWarning() << "ChatItem::data(): model index is invalid!" << index;
58 return model()->data(index, role);
61 qreal ChatItem::setGeometry(qreal w, qreal h) {
62 if(w == _boundingRect.width()) return _boundingRect.height();
63 prepareGeometryChange();
64 _boundingRect.setWidth(w);
65 if(h < 0) h = computeHeight();
66 _boundingRect.setHeight(h);
67 if(haveLayout()) updateLayout();
71 qreal ChatItem::computeHeight() {
72 return fontMetrics()->lineSpacing(); // only contents can be multi-line
75 QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
76 QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
79 option.setWrapMode(wrapMode);
80 option.setAlignment(alignment);
81 layout->setTextOption(option);
83 QList<QTextLayout::FormatRange> formatRanges
84 = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
85 layout->setAdditionalFormats(formatRanges);
89 void ChatItem::updateLayout() {
91 setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft));
93 layout()->beginLayout();
94 QTextLine line = layout()->createLine();
96 line.setLineWidth(width());
97 line.setPosition(QPointF(0,0));
99 layout()->endLayout();
102 void ChatItem::clearLayout() {
107 // NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
108 // This is a deliberate trade-off. (-> selectFmt creation, data() call)
109 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
110 Q_UNUSED(option); Q_UNUSED(widget);
111 if(!haveLayout()) updateLayout();
112 painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
113 //if(_selectionMode == FullSelection) {
115 //painter->fillRect(boundingRect(), QApplication::palette().brush(QPalette::Highlight));
116 //painter->restore();
118 QVector<QTextLayout::FormatRange> formats = additionalFormats();
119 if(_selectionMode != NoSelection) {
120 QTextLayout::FormatRange selectFmt;
121 selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
122 selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
123 if(_selectionMode == PartialSelection) {
124 selectFmt.start = qMin(_selectionStart, _selectionEnd);
125 selectFmt.length = qAbs(_selectionStart - _selectionEnd);
126 } else { // FullSelection
128 selectFmt.length = data(MessageModel::DisplayRole).toString().length();
130 formats.append(selectFmt);
132 layout()->draw(painter, QPointF(0,0), formats, boundingRect());
135 qint16 ChatItem::posToCursor(const QPointF &pos) {
136 if(pos.y() > height()) return data(MessageModel::DisplayRole).toString().length();
137 if(pos.y() < 0) return 0;
138 if(!haveLayout()) updateLayout();
139 for(int l = layout()->lineCount() - 1; l >= 0; l--) {
140 QTextLine line = layout()->lineAt(l);
141 if(pos.y() >= line.y()) {
142 return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
148 void ChatItem::setFullSelection() {
149 if(_selectionMode != FullSelection) {
150 _selectionMode = FullSelection;
155 void ChatItem::clearSelection() {
156 _selectionMode = NoSelection;
160 void ChatItem::continueSelecting(const QPointF &pos) {
161 _selectionMode = PartialSelection;
162 _selectionEnd = posToCursor(pos);
166 QList<QRectF> ChatItem::findWords(const QString &searchWord, Qt::CaseSensitivity caseSensitive) {
167 QList<QRectF> resultList;
168 const QAbstractItemModel *model_ = model();
172 QString plainText = model_->data(model_->index(row(), column()), MessageModel::DisplayRole).toString();
173 QList<int> indexList;
174 int searchIdx = plainText.indexOf(searchWord, 0, caseSensitive);
175 while(searchIdx != -1) {
176 indexList << searchIdx;
177 searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
183 foreach(int idx, indexList) {
184 QTextLine line = layout()->lineForTextPosition(idx);
185 qreal x = line.cursorToX(idx);
186 qreal width = line.cursorToX(idx + searchWord.count()) - x;
187 qreal height = fontMetrics()->lineSpacing();
188 qreal y = height * line.lineNumber();
189 resultList << QRectF(x, y, width, height);
194 void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
195 if(event->buttons() == Qt::LeftButton) {
196 chatScene()->setSelectingItem(this);
197 _selectionStart = _selectionEnd = posToCursor(event->pos());
198 _selectionMode = NoSelection; // will be set to PartialSelection by mouseMoveEvent
206 void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
207 if(event->buttons() == Qt::LeftButton) {
208 if(contains(event->pos())) {
209 qint16 end = posToCursor(event->pos());
210 if(end != _selectionEnd) {
212 _selectionMode = (_selectionStart != _selectionEnd ? PartialSelection : NoSelection);
217 chatScene()->startGlobalSelection(this, event->pos());
225 void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
226 if(_selectionMode != NoSelection && !event->buttons() & Qt::LeftButton) {
227 _selectionEnd = posToCursor(event->pos());
229 = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
230 chatScene()->putToClipboard(selection);
237 /*************************************************************************************************/
239 /*************************************************************************************************/
241 void SenderChatItem::updateLayout() {
242 if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignRight));
243 ChatItem::updateLayout();
246 /*************************************************************************************************/
248 ContentsChatItem::ContentsChatItem(QAbstractItemModel *model, QGraphicsItem *parent) : ChatItem(column(), model, parent),
254 ContentsChatItem::~ContentsChatItem() {
258 qreal ContentsChatItem::computeHeight() {
260 WrapColumnFinder finder(this);
261 while(finder.nextWrapColumn() > 0) lines++;
262 return lines * fontMetrics()->lineSpacing();
265 void ContentsChatItem::setLayout(QTextLayout *layout) {
267 _layoutData = new LayoutData;
268 _layoutData->clickables = findClickables();
270 delete _layoutData->layout;
272 _layoutData->layout = layout;
275 void ContentsChatItem::clearLayout() {
280 void ContentsChatItem::updateLayout() {
281 if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere));
284 ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
285 if(!wrapList.count()) return; // empty chatitem
288 WrapColumnFinder finder(this);
289 layout()->beginLayout();
291 QTextLine line = layout()->createLine();
295 int col = finder.nextWrapColumn();
296 line.setNumColumns(col >= 0 ? col - line.textStart() : layout()->text().length());
297 line.setPosition(QPointF(0, h));
298 h += fontMetrics()->lineSpacing();
300 layout()->endLayout();
303 // NOTE: This method is not threadsafe and not reentrant!
304 // (RegExps are not constant while matching, and they are static here for efficiency)
305 QList<ContentsChatItem::Clickable> ContentsChatItem::findClickables() {
307 static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
308 static QString urlChars("(?:[\\w\\-~@/?&=+$()!%#]|[,.;:]\\w)");
310 static QRegExp regExp[] = {
312 // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
313 QRegExp(QString("((?:(?:https?://|s?ftp://|irc://|mailto:)|www)%1+)%2").arg(urlChars, urlEnd)),
316 // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
317 QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b")
319 // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
322 static const int regExpCount = 2; // number of regexps in the array above
324 qint16 matches[] = { 0, 0, 0 };
325 qint16 matchEnd[] = { 0, 0, 0 };
327 QString str = data(ChatLineModel::DisplayRole).toString();
329 QList<Clickable> result;
336 minidx = str.length();
337 for(int i = 0; i < regExpCount; i++) {
338 if(matches[i] < 0 || matchEnd[i] > str.length()) continue;
339 if(idx >= matchEnd[i]) {
340 matches[i] = str.indexOf(regExp[i], qMax(matchEnd[i], idx));
341 if(matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
343 if(matches[i] >= 0 && matches[i] < minidx) {
349 idx = matchEnd[type];
350 if(type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
351 if(!str.mid(matches[type], matchEnd[type]-matches[type]).contains('(')) matchEnd[type]--;
353 result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
358 if(!result.isEmpty()) qDebug() << str;
359 foreach(Clickable click, result) {
360 qDebug() << str.mid(click.start, click.length);
366 QVector<QTextLayout::FormatRange> ContentsChatItem::additionalFormats() const {
367 // mark a clickable if hovered upon
368 QVector<QTextLayout::FormatRange> fmt;
369 if(layoutData()->currentClickable.isValid()) {
370 Clickable click = layoutData()->currentClickable;
371 QTextLayout::FormatRange f;
372 f.start = click.start;
373 f.length = click.length;
374 f.format.setFontUnderline(true);
380 void ContentsChatItem::endHoverMode() {
381 if(layoutData()->currentClickable.isValid()) {
382 setCursor(Qt::ArrowCursor);
383 layoutData()->currentClickable = Clickable();
388 void ContentsChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
389 layoutData()->hasDragged = false;
390 ChatItem::mousePressEvent(event);
393 void ContentsChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
394 if(!event->buttons() && !layoutData()->hasDragged) {
396 Clickable click = layoutData()->currentClickable;
397 if(click.isValid()) {
398 QString str = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
401 QDesktopServices::openUrl(str);
403 case Clickable::Channel:
404 // TODO join or whatever...
411 ChatItem::mouseReleaseEvent(event);
414 void ContentsChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
415 // mouse move events always mean we're not hovering anymore...
417 // also, check if we have dragged the mouse
418 if(!layoutData()->hasDragged && event->buttons() & Qt::LeftButton
419 && (event->buttonDownScreenPos(Qt::LeftButton) - event->screenPos()).manhattanLength() >= QApplication::startDragDistance())
420 layoutData()->hasDragged = true;
421 ChatItem::mouseMoveEvent(event);
424 void ContentsChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
429 void ContentsChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
430 bool onClickable = false;
431 qint16 idx = posToCursor(event->pos());
432 for(int i = 0; i < layoutData()->clickables.count(); i++) {
433 Clickable click = layoutData()->clickables.at(i);
434 if(idx >= click.start && idx < click.start + click.length) {
435 if(click.type == Clickable::Url)
437 else if(click.type == Clickable::Channel) {
438 // TODO: don't make clickable if it's our own name
439 //onClickable = true; //FIXME disabled for now
442 setCursor(Qt::PointingHandCursor);
443 layoutData()->currentClickable = click;
449 if(!onClickable) endHoverMode();
453 /*************************************************************************************************/
455 ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
458 wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
466 ContentsChatItem::WrapColumnFinder::~WrapColumnFinder() {
470 qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
471 while(wordidx < wrapList.count()) {
472 w += wrapList.at(wordidx).width;
473 if(w >= item->width()) {
474 if(lastwrapcol >= wrapList.at(wordidx).start) {
475 // first word, and it doesn't fit
476 if(!line.isValid()) {
477 layout = item->createLayout(QTextOption::NoWrap);
478 layout->beginLayout();
479 line = layout->createLine();
480 line.setLineWidth(item->width());
483 int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
484 qreal x = line.cursorToX(idx, QTextLine::Trailing);
485 w = w - wrapList.at(wordidx).width - (x - lastwrappos);
490 // not the first word, so just wrap before this
491 lastwrapcol = wrapList.at(wordidx).start;
492 lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
496 w += wrapList.at(wordidx).trailing;