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"
33 #include "qtuistyle.h"
35 ChatItem::ChatItem(ChatLineModel::ColumnType col, QAbstractItemModel *model, QGraphicsItem *parent)
36 : QGraphicsItem(parent),
38 _selectionMode(NoSelection),
43 QModelIndex index = model->index(row(), col);
44 _fontMetrics = QtUi::style()->fontMetrics(model->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
45 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 qreal ChatItem::setGeometry(qreal w, qreal h) {
63 if(w == _boundingRect.width()) return _boundingRect.height();
64 prepareGeometryChange();
65 _boundingRect.setWidth(w);
66 if(h < 0) h = computeHeight();
67 _boundingRect.setHeight(h);
68 if(haveLayout()) updateLayout();
72 qreal ChatItem::computeHeight() {
73 return fontMetrics()->lineSpacing(); // only contents can be multi-line
76 QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
77 QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
80 option.setWrapMode(wrapMode);
81 option.setAlignment(alignment);
82 layout->setTextOption(option);
84 QList<QTextLayout::FormatRange> formatRanges
85 = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
86 layout->setAdditionalFormats(formatRanges);
90 void ChatItem::updateLayout() {
92 setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft));
94 layout()->beginLayout();
95 QTextLine line = layout()->createLine();
97 line.setLineWidth(width());
98 line.setPosition(QPointF(0,0));
100 layout()->endLayout();
103 void ChatItem::clearLayout() {
108 // NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
109 // This is a deliberate trade-off. (-> selectFmt creation, data() call)
110 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
111 Q_UNUSED(option); Q_UNUSED(widget);
112 if(!haveLayout()) updateLayout();
113 painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
114 //if(_selectionMode == FullSelection) {
116 //painter->fillRect(boundingRect(), QApplication::palette().brush(QPalette::Highlight));
117 //painter->restore();
119 QVector<QTextLayout::FormatRange> formats = additionalFormats();
120 if(_selectionMode != NoSelection) {
121 QTextLayout::FormatRange selectFmt;
122 selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
123 selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
124 if(_selectionMode == PartialSelection) {
125 selectFmt.start = qMin(_selectionStart, _selectionEnd);
126 selectFmt.length = qAbs(_selectionStart - _selectionEnd);
127 } else { // FullSelection
129 selectFmt.length = data(MessageModel::DisplayRole).toString().length();
131 formats.append(selectFmt);
133 layout()->draw(painter, QPointF(0,0), formats, boundingRect());
136 qint16 ChatItem::posToCursor(const QPointF &pos) {
137 if(pos.y() > height()) return data(MessageModel::DisplayRole).toString().length();
138 if(pos.y() < 0) return 0;
139 if(!haveLayout()) updateLayout();
140 for(int l = layout()->lineCount() - 1; l >= 0; l--) {
141 QTextLine line = layout()->lineAt(l);
142 if(pos.y() >= line.y()) {
143 return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
149 void ChatItem::setFullSelection() {
150 if(_selectionMode != FullSelection) {
151 _selectionMode = FullSelection;
156 void ChatItem::clearSelection() {
157 _selectionMode = NoSelection;
161 void ChatItem::continueSelecting(const QPointF &pos) {
162 _selectionMode = PartialSelection;
163 _selectionEnd = posToCursor(pos);
167 QList<QRectF> ChatItem::findWords(const QString &searchWord, Qt::CaseSensitivity caseSensitive) {
168 QList<QRectF> resultList;
169 const QAbstractItemModel *model_ = model();
173 QString plainText = model_->data(model_->index(row(), column()), MessageModel::DisplayRole).toString();
174 QList<int> indexList;
175 int searchIdx = plainText.indexOf(searchWord, 0, caseSensitive);
176 while(searchIdx != -1) {
177 indexList << searchIdx;
178 searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
184 foreach(int idx, indexList) {
185 QTextLine line = layout()->lineForTextPosition(idx);
186 qreal x = line.cursorToX(idx);
187 qreal width = line.cursorToX(idx + searchWord.count()) - x;
188 qreal height = fontMetrics()->lineSpacing();
189 qreal y = height * line.lineNumber();
190 resultList << QRectF(x, y, width, height);
195 void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
196 if(event->buttons() == Qt::LeftButton) {
197 chatScene()->setSelectingItem(this);
198 _selectionStart = _selectionEnd = posToCursor(event->pos());
199 _selectionMode = NoSelection; // will be set to PartialSelection by mouseMoveEvent
207 void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
208 if(event->buttons() == Qt::LeftButton) {
209 if(contains(event->pos())) {
210 qint16 end = posToCursor(event->pos());
211 if(end != _selectionEnd) {
213 _selectionMode = (_selectionStart != _selectionEnd ? PartialSelection : NoSelection);
218 chatScene()->startGlobalSelection(this, event->pos());
226 void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
227 if(_selectionMode != NoSelection && !event->buttons() & Qt::LeftButton) {
228 _selectionEnd = posToCursor(event->pos());
230 = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
231 chatScene()->putToClipboard(selection);
238 /*************************************************************************************************/
240 /*************************************************************************************************/
242 void SenderChatItem::updateLayout() {
243 if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignRight));
244 ChatItem::updateLayout();
247 /*************************************************************************************************/
249 ContentsChatItem::ContentsChatItem(QAbstractItemModel *model, QGraphicsItem *parent) : ChatItem(column(), model, parent),
255 ContentsChatItem::~ContentsChatItem() {
259 qreal ContentsChatItem::computeHeight() {
261 WrapColumnFinder finder(this);
262 while(finder.nextWrapColumn() > 0) lines++;
263 return lines * fontMetrics()->lineSpacing();
266 void ContentsChatItem::setLayout(QTextLayout *layout) {
268 _layoutData = new LayoutData;
269 _layoutData->clickables = findClickables();
271 delete _layoutData->layout;
273 _layoutData->layout = layout;
276 void ContentsChatItem::clearLayout() {
281 void ContentsChatItem::updateLayout() {
282 if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere));
285 ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
286 if(!wrapList.count()) return; // empty chatitem
289 WrapColumnFinder finder(this);
290 layout()->beginLayout();
292 QTextLine line = layout()->createLine();
296 int col = finder.nextWrapColumn();
297 line.setNumColumns(col >= 0 ? col - line.textStart() : layout()->text().length());
298 line.setPosition(QPointF(0, h));
299 h += fontMetrics()->lineSpacing();
301 layout()->endLayout();
304 // NOTE: This method is not threadsafe and not reentrant!
305 // (RegExps are not constant while matching, and they are static here for efficiency)
306 QList<ContentsChatItem::Clickable> ContentsChatItem::findClickables() {
308 static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
309 static QString urlChars("(?:[\\w\\-~@/?&=+$()!%#]|[,.;:]\\w)");
311 static QRegExp regExp[] = {
313 // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
314 QRegExp(QString("((?:(?:https?://|s?ftp://|irc://|mailto:)|www)%1+)%2").arg(urlChars, urlEnd)),
317 // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
318 QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b")
320 // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
323 static const int regExpCount = 2; // number of regexps in the array above
325 qint16 matches[] = { 0, 0, 0 };
326 qint16 matchEnd[] = { 0, 0, 0 };
328 QString str = data(ChatLineModel::DisplayRole).toString();
330 QList<Clickable> result;
337 minidx = str.length();
338 for(int i = 0; i < regExpCount; i++) {
339 if(matches[i] < 0 || matchEnd[i] > str.length()) continue;
340 if(idx >= matchEnd[i]) {
341 matches[i] = str.indexOf(regExp[i], qMax(matchEnd[i], idx));
342 if(matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
344 if(matches[i] >= 0 && matches[i] < minidx) {
350 idx = matchEnd[type];
351 if(type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
352 if(!str.mid(matches[type], matchEnd[type]-matches[type]).contains('(')) matchEnd[type]--;
354 result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
359 if(!result.isEmpty()) qDebug() << str;
360 foreach(Clickable click, result) {
361 qDebug() << str.mid(click.start, click.length);
367 QVector<QTextLayout::FormatRange> ContentsChatItem::additionalFormats() const {
368 // mark a clickable if hovered upon
369 QVector<QTextLayout::FormatRange> fmt;
370 if(layoutData()->currentClickable.isValid()) {
371 Clickable click = layoutData()->currentClickable;
372 QTextLayout::FormatRange f;
373 f.start = click.start;
374 f.length = click.length;
375 f.format.setFontUnderline(true);
381 void ContentsChatItem::endHoverMode() {
382 if(layoutData()->currentClickable.isValid()) {
383 setCursor(Qt::ArrowCursor);
384 layoutData()->currentClickable = Clickable();
389 void ContentsChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
390 layoutData()->hasDragged = false;
391 ChatItem::mousePressEvent(event);
394 void ContentsChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
395 if(!event->buttons() && !layoutData()->hasDragged) {
397 Clickable click = layoutData()->currentClickable;
398 if(click.isValid()) {
399 QString str = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
402 QDesktopServices::openUrl(str);
404 case Clickable::Channel:
405 // TODO join or whatever...
412 ChatItem::mouseReleaseEvent(event);
415 void ContentsChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
416 // mouse move events always mean we're not hovering anymore...
418 // also, check if we have dragged the mouse
419 if(!layoutData()->hasDragged && event->buttons() & Qt::LeftButton
420 && (event->buttonDownScreenPos(Qt::LeftButton) - event->screenPos()).manhattanLength() >= QApplication::startDragDistance())
421 layoutData()->hasDragged = true;
422 ChatItem::mouseMoveEvent(event);
425 void ContentsChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
430 void ContentsChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
431 bool onClickable = false;
432 qint16 idx = posToCursor(event->pos());
433 for(int i = 0; i < layoutData()->clickables.count(); i++) {
434 Clickable click = layoutData()->clickables.at(i);
435 if(idx >= click.start && idx < click.start + click.length) {
436 if(click.type == Clickable::Url)
438 else if(click.type == Clickable::Channel) {
439 // TODO: don't make clickable if it's our own name
440 //onClickable = true; //FIXME disabled for now
443 setCursor(Qt::PointingHandCursor);
444 layoutData()->currentClickable = click;
450 if(!onClickable) endHoverMode();
454 /*************************************************************************************************/
456 ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
459 wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
467 ContentsChatItem::WrapColumnFinder::~WrapColumnFinder() {
471 qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
472 while(wordidx < wrapList.count()) {
473 w += wrapList.at(wordidx).width;
474 if(w >= item->width()) {
475 if(lastwrapcol >= wrapList.at(wordidx).start) {
476 // first word, and it doesn't fit
477 if(!line.isValid()) {
478 layout = item->createLayout(QTextOption::NoWrap);
479 layout->beginLayout();
480 line = layout->createLine();
481 line.setLineWidth(item->width());
484 int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
485 qreal x = line.cursorToX(idx, QTextLine::Trailing);
486 w = w - wrapList.at(wordidx).width - (x - lastwrappos);
491 // not the first word, so just wrap before this
492 lastwrapcol = wrapList.at(wordidx).start;
493 lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
497 w += wrapList.at(wordidx).trailing;