1/***************************************************************************
2 * Copyright (C) 2005-2014 by the Quassel Project *
3 * devel@quassel-irc.org *
4 * *
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. *
9 * *
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. *
14 * *
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
20
21#include <QApplication>
22#include <QClipboard>
23#include <QDesktopServices>
24#include <QDrag>
25#include <QGraphicsSceneMouseEvent>
26#include <QMenu>
27#include <QMenuBar>
28#include <QMimeData>
29#include <QPersistentModelIndex>
30#include <QUrl>
31
32#ifdef HAVE_KDE
33# include <KMenuBar>
34#else
35# include <QMenuBar>
36#endif
37
38#ifdef HAVE_WEBKIT
39# include <QWebView>
40#endif
41
42#include "chatitem.h"
43#include "chatline.h"
44#include "chatlinemodelitem.h"
45#include "chatscene.h"
46#include "chatview.h"
47#include "client.h"
48#include "clientbacklogmanager.h"
49#include "columnhandleitem.h"
50#include "contextmenuactionprovider.h"
51#include "iconloader.h"
52#include "mainwin.h"
53#include "markerlineitem.h"
54#include "messagefilter.h"
55#include "qtui.h"
56#include "qtuistyle.h"
57#include "chatviewsettings.h"
58#include "webpreviewitem.h"
59
60const qreal minContentsWidth = 200;
61
62ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent)
63 : QGraphicsScene(0, 0, width, 0, (QObject *)parent),
64 _chatView(parent),
65 _idString(idString),
66 _model(model),
67 _singleBufferId(BufferId()),
68 _sceneRect(0, 0, width, 0),
69 _firstLineRow(-1),
70 _viewportHeight(0),
71 _markerLine(new MarkerLineItem(width)),
72 _markerLineVisible(false),
73 _markerLineValid(false),
74 _markerLineJumpPending(false),
75 _cutoffMode(CutoffRight),
76 _selectingItem(0),
77 _selectionStart(-1),
78 _isSelecting(false),
79 _clickMode(NoClick),
80 _clickHandled(true),
81 _leftButtonPressed(false)
82{
83 MessageFilter *filter = qobject_cast<MessageFilter *>(model);
84 if (filter && filter->isSingleBufferFilter()) {
85 _singleBufferId = filter->singleBufferId();
86 }
87
88 addItem(_markerLine);
89 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _markerLine, SLOT(sceneRectChanged(const QRectF &)));
90
91 ChatViewSettings defaultSettings;
92 _defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt();
93 _defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt();
94
95 ChatViewSettings viewSettings(this);
96 _firstColHandlePos = viewSettings.value("FirstColumnHandlePos", _defaultFirstColHandlePos).toInt();
97 _secondColHandlePos = viewSettings.value("SecondColumnHandlePos", _defaultSecondColHandlePos).toInt();
98
99 _firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
100 addItem(_firstColHandle);
101 _firstColHandle->setXPos(_firstColHandlePos);
102 connect(_firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(firstHandlePositionChanged(qreal)));
103 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
104
105 _secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
106 addItem(_secondColHandle);
107 _secondColHandle->setXPos(_secondColHandlePos);
108 connect(_secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(secondHandlePositionChanged(qreal)));
109
110 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
111
112 setHandleXLimits();
113
114 if (model->rowCount() > 0)
115 rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
116
117 connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
118 this, SLOT(rowsInserted(const QModelIndex &, int, int)));
119 connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
120 this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
121 connect(model, SIGNAL(rowsRemoved(QModelIndex, int, int)),
122 this, SLOT(rowsRemoved()));
123 connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), SLOT(dataChanged(QModelIndex, QModelIndex)));
124
125#ifdef HAVE_WEBKIT
126 webPreview.timer.setSingleShot(true);
127 connect(&webPreview.timer, SIGNAL(timeout()), this, SLOT(webPreviewNextStep()));
128#endif
129 _showWebPreview = defaultSettings.showWebPreview();
130 defaultSettings.notify("ShowWebPreview", this, SLOT(showWebPreviewChanged()));
131
132 _clickTimer.setInterval(QApplication::doubleClickInterval());
133 _clickTimer.setSingleShot(true);
134 connect(&_clickTimer, SIGNAL(timeout()), SLOT(clickTimeout()));
135
136 setItemIndexMethod(QGraphicsScene::NoIndex);
137}
138
139
140ChatScene::~ChatScene()
141{
142}
143
144
145ChatView *ChatScene::chatView() const
146{
147 return _chatView;
148}
149
150
151ColumnHandleItem *ChatScene::firstColumnHandle() const
152{
153 return _firstColHandle;
154}
155
156
157ColumnHandleItem *ChatScene::secondColumnHandle() const
158{
159 return _secondColHandle;
160}
161
162void ChatScene::resetColumnWidths()
163{
164 //make sure first column is at least 80 px wide, second 120 px
165 int firstColHandlePos = qMax(_defaultFirstColHandlePos,
166 80);
167 int secondColHandlePos = qMax(_defaultSecondColHandlePos,
168 firstColHandlePos + 120);
169
170 _firstColHandle->setXPos(firstColHandlePos);
171 _secondColHandle->setXPos(secondColHandlePos);
172}
173
174ChatLine *ChatScene::chatLine(MsgId msgId, bool matchExact, bool ignoreDayChange) const
175{
176 if (!_lines.count())
177 return 0;
178
179 QList<ChatLine *>::ConstIterator start = _lines.begin();
180 QList<ChatLine *>::ConstIterator end = _lines.end();
181 QList<ChatLine *>::ConstIterator middle;
182
183 int n = int(end - start);
184 int half;
185
186 while (n > 0) {
187 half = n >> 1;
188 middle = start + half;
189 if ((*middle)->msgId() < msgId) {
190 start = middle + 1;
191 n -= half + 1;
192 }
193 else {
194 n = half;
195 }
196 }
197
198 if (start != end && (*start)->msgId() == msgId && (ignoreDayChange ? (*start)->msgType() != Message::DayChange : true))
199 return *start;
200
201 if (matchExact)
202 return 0;
203
204 if (start == _lines.begin()) // not (yet?) in our scene
205 return 0;
206
207 // if we didn't find the exact msgId, take the next-lower one (this makes sense for lastSeen)
208
209 if (start == end) { // higher than last element
210 if (!ignoreDayChange)
211 return _lines.last();
212
213 for (int i = _lines.count() -1; i >= 0; i--) {
214 if (_lines.at(i)->msgType() != Message::DayChange)
215 return _lines.at(i);
216 }
217 return 0;
218 }
219
220 // return the next-lower line
221 if (!ignoreDayChange)
222 return *(--start);
223
224 do {
225 if ((*(--start))->msgType() != Message::DayChange)
226 return *start;
227 }
228 while (start != _lines.begin());
229 return 0;
230}
231
232
233ChatItem *ChatScene::chatItemAt(const QPointF &scenePos) const
234{
235 foreach(QGraphicsItem *item, items(scenePos, Qt::IntersectsItemBoundingRect, Qt::AscendingOrder)) {
236 ChatLine *line = qgraphicsitem_cast<ChatLine *>(item);
237 if (line)
238 return line->itemAt(line->mapFromScene(scenePos));
239 }
240 return 0;
241}
242
243
244bool ChatScene::containsBuffer(const BufferId &id) const
245{
246 MessageFilter *filter = qobject_cast<MessageFilter *>(model());
247 if (filter)
248 return filter->containsBuffer(id);
249 else
250 return false;
251}
252
253
254void ChatScene::setMarkerLineVisible(bool visible)
255{
256 _markerLineVisible = visible;
257 if (visible && _markerLineValid)
258 markerLine()->setVisible(true);
259 else
260 markerLine()->setVisible(false);
261}
262
263
264void ChatScene::setMarkerLine(MsgId msgId)
265{
266 if (!isSingleBufferScene())
267 return;
268
269 if (!msgId.isValid())
270 msgId = Client::markerLine(singleBufferId());
271
272 if (msgId.isValid()) {
273 ChatLine *line = chatLine(msgId, false, true);
274 if (line) {
275 markerLine()->setChatLine(line);
276 // if this was the last line, we won't see it because it's outside the sceneRect
277 // .. which is exactly what we want :)
278 markerLine()->setPos(line->pos() + QPointF(0, line->height()));
279
280 // DayChange messages might have been hidden outside the scene rect, don't make the markerline visible then!
281 if (markerLine()->pos().y() >= sceneRect().y()) {
282 _markerLineValid = true;
283 if (_markerLineVisible)
284 markerLine()->setVisible(true);
285 if (_markerLineJumpPending) {
286 _markerLineJumpPending = false;
287 if (markerLine()->isVisible()) {
288 markerLine()->ensureVisible(QRectF(), 50, 50);
289 }
290 }
291 return;
292 }
293 }
294 }
295 _markerLineValid = false;
296 markerLine()->setVisible(false);
297}
298
299
300void ChatScene::jumpToMarkerLine(bool requestBacklog)
301{
302 if (!isSingleBufferScene())
303 return;
304
305 if (markerLine()->isVisible()) {
306 markerLine()->ensureVisible(QRectF(), 50, 50);
307 return;
308 }
309 if (!_markerLineValid && requestBacklog) {
310 MsgId msgId = Client::markerLine(singleBufferId());
311 if (msgId.isValid()) {
312 _markerLineJumpPending = true;
313 Client::backlogManager()->requestBacklog(singleBufferId(), msgId, -1, -1, 0);
314
315 // If we filtered out the lastSeenMsg (by changing filters after setting it), we'd never jump because the above request
316 // won't fetch any prior lines. Thus, trigger a dynamic backlog request just in case, so repeated
317 // jump tries will eventually cause enough backlog to be fetched.
318 // This is a bit hackish, but not wasteful, as jumping to the top of the ChatView would trigger a dynamic fetch anyway.
319 this->requestBacklog();
320 }
321 }
322}
323
324
325void ChatScene::rowsInserted(const QModelIndex &index, int start, int end)
326{
327 Q_UNUSED(index);
328
329// QModelIndex sidx = model()->index(start, 2);
330// QModelIndex eidx = model()->index(end, 2);
331// qDebug() << "rowsInserted:";
332// if(start > 0) {
333// QModelIndex ssidx = model()->index(start - 1, 2);
334// qDebug() << "Start--:" << start - 1 << ssidx.data(MessageModel::MsgIdRole).value<MsgId>()
335// << ssidx.data(Qt::DisplayRole).toString();
336// }
337// qDebug() << "Start:" << start << sidx.data(MessageModel::MsgIdRole).value<MsgId>()
338// << sidx.data(Qt::DisplayRole).toString();
339// qDebug() << "End:" << end << eidx.data(MessageModel::MsgIdRole).value<MsgId>()
340// << eidx.data(Qt::DisplayRole).toString();
341// if(end + 1 < model()->rowCount()) {
342// QModelIndex eeidx = model()->index(end + 1, 2);
343// qDebug() << "End++:" << end + 1 << eeidx.data(MessageModel::MsgIdRole).value<MsgId>()
344// << eeidx.data(Qt::DisplayRole).toString();
345// }
346
347 qreal h = 0;
348 qreal y = 0;
349 qreal width = _sceneRect.width();
350 bool atBottom = (start == _lines.count());
351 bool atTop = !atBottom && (start == 0);
352
353 if (start < _lines.count()) {
354 y = _lines.value(start)->y();
355 }
356 else if (atBottom && !_lines.isEmpty()) {
357 y = _lines.last()->y() + _lines.last()->height();
358 }
359
360 qreal contentsWidth = width - secondColumnHandle()->sceneRight();
361 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
362 qreal timestampWidth = firstColumnHandle()->sceneLeft();
363 QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
364 QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
365
366 if (atTop) {
367 for (int i = end; i >= start; i--) {
368 ChatLine *line = new ChatLine(i, model(),
369 width,
370 timestampWidth, senderWidth, contentsWidth,
371 senderPos, contentsPos);
372 h += line->height();
373 line->setPos(0, y-h);
374 _lines.insert(start, line);
375 addItem(line);
376 }
377 }
378 else {
379 for (int i = start; i <= end; i++) {
380 ChatLine *line = new ChatLine(i, model(),
381 width,
382 timestampWidth, senderWidth, contentsWidth,
383 senderPos, contentsPos);
384 line->setPos(0, y+h);
385 h += line->height();
386 _lines.insert(i, line);
387 addItem(line);
388 }
389 }
390
391 // update existing items
392 for (int i = end+1; i < _lines.count(); i++) {
393 _lines[i]->setRow(i);
394 }
395
396 // update selection
397 if (_selectionStart >= 0) {
398 int offset = end - start + 1;
399 int oldStart = _selectionStart;
400 if (_selectionStart >= start)
401 _selectionStart += offset;
402 if (_selectionEnd >= start) {
403 _selectionEnd += offset;
404 if (_selectionStart == oldStart)
405 for (int i = start; i < start + offset; i++)
406 _lines[i]->setSelected(true);
407 }
408 if (_firstSelectionRow >= start)
409 _firstSelectionRow += offset;
410 }
411
412 // neither pre- or append means we have to do dirty work: move items...
413 if (!(atTop || atBottom)) {
414 ChatLine *line = 0;
415 for (int i = 0; i <= end; i++) {
416 line = _lines.at(i);
417 line->setPos(0, line->pos().y() - h);
418 if (line == markerLine()->chatLine())
419 markerLine()->setPos(line->pos() + QPointF(0, line->height()));
420 }
421 }
422
423 // check if all went right
424 Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
425// if(start != 0) {
426// if(_lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() != _lines.at(start)->pos().y()) {
427// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
428// qDebug() << "line[start - 1]:" << _lines.at(start - 1)->pos().y() << "+" << _lines.at(start - 1)->height() << "=" << _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height();
429// qDebug() << "line[start]" << _lines.at(start)->pos().y();
430// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
431// Q_ASSERT(false)
432// }
433// }
434 Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
435// if(end + 1 < _lines.count()) {
436// if(_lines.at(end)->pos().y() + _lines.at(end)->height() != _lines.at(end + 1)->pos().y()) {
437// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
438// qDebug() << "line[end]:" << _lines.at(end)->pos().y() << "+" << _lines.at(end)->height() << "=" << _lines.at(end)->pos().y() + _lines.at(end)->height();
439// qDebug() << "line[end+1]" << _lines.at(end + 1)->pos().y();
440// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
441// Q_ASSERT(false);
442// }
443// }
444
445 if (!atBottom) {
446 if (start < _firstLineRow) {
447 int prevFirstLineRow = _firstLineRow + (end - start + 1);
448 for (int i = end + 1; i < prevFirstLineRow; i++) {
449 _lines.at(i)->show();
450 }
451 }
452 // force new search for first proper line
453 _firstLineRow = -1;
454 }
455 updateSceneRect();
456 if (atBottom) {
457 emit lastLineChanged(_lines.last(), h);
458 }
459
460 // now move the marker line if necessary. we don't need to do anything if we appended lines though...
461 if (!_markerLineValid)
462 setMarkerLine();
463}
464
465
466void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
467{
468 Q_UNUSED(parent);
469
470 qreal h = 0; // total height of removed items;
471
472 bool atTop = (start == 0);
473 bool atBottom = (end == _lines.count() - 1);
474
475 // clear selection
476 if (_selectingItem) {
477 int row = _selectingItem->row();
478 if (row >= start && row <= end)
479 setSelectingItem(0);
480 }
481
482 // remove items from scene
483 QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
484 int lineCount = start;
485 while (lineIter != _lines.end() && lineCount <= end) {
486 if ((*lineIter) == markerLine()->chatLine())
487 markerLine()->setChatLine(0);
488 h += (*lineIter)->height();
489 delete *lineIter;
490 lineIter = _lines.erase(lineIter);
491 lineCount++;
492 }
493
494 // update rows of remaining chatlines
495 for (int i = start; i < _lines.count(); i++) {
496 _lines.at(i)->setRow(i);
497 }
498
499 // update selection
500 if (_selectionStart >= 0) {
501 int offset = end - start + 1;
502 if (_selectionStart >= start)
503 _selectionStart = qMax(_selectionStart - offset, start);
504 if (_selectionEnd >= start)
505 _selectionEnd -= offset;
506 if (_firstSelectionRow >= start)
507 _firstSelectionRow -= offset;
508
509 if (_selectionEnd < _selectionStart) {
510 _isSelecting = false;
511 _selectionStart = -1;
512 }
513 }
514
515 // neither removing at bottom or top means we have to move items...
516 if (!(atTop || atBottom)) {
517 qreal offset = h;
518 int moveStart = 0;
519 int moveEnd = _lines.count() - 1;
520 if (start < _lines.count() - start) {
521 // move top part
522 moveEnd = start - 1;
523 }
524 else {
525 // move bottom part
526 moveStart = start;
527 offset = -offset;
528 }
529 ChatLine *line = 0;
530 for (int i = moveStart; i <= moveEnd; i++) {
531 line = _lines.at(i);
532 line->setPos(0, line->pos().y() + offset);
533 }
534 }
535
536 Q_ASSERT(start == 0 || start >= _lines.count() || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
537
538 // update sceneRect
539 // when searching for the first non-date-line we have to take into account that our
540 // model still contains the just removed lines so we cannot simply call updateSceneRect()
541 int numRows = model()->rowCount();
542 QModelIndex firstLineIdx;
543 _firstLineRow = -1;
544 bool needOffset = false;
545 do {
546 _firstLineRow++;
547 if (_firstLineRow >= start && _firstLineRow <= end) {
548 _firstLineRow = end + 1;
549 needOffset = true;
550 }
551 firstLineIdx = model()->index(_firstLineRow, 0);
552 }
553 while ((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) == Message::DayChange && _firstLineRow < numRows);
554
555 if (needOffset)
556 _firstLineRow -= end - start + 1;
557 updateSceneRect();
558}
559
560
561void ChatScene::rowsRemoved()
562{
563 // move the marker line if necessary
564 setMarkerLine();
565}
566
567
568void ChatScene::dataChanged(const QModelIndex &tl, const QModelIndex &br)
569{
570 layout(tl.row(), br.row(), _sceneRect.width());
571}
572
573
574void ChatScene::updateForViewport(qreal width, qreal height)
575{
576 _viewportHeight = height;
577 setWidth(width);
578}
579
580
581void ChatScene::setWidth(qreal width)
582{
583 if (width == _sceneRect.width())
584 return;
585 layout(0, _lines.count()-1, width);
586}
587
588
589void ChatScene::layout(int start, int end, qreal width)
590{
591 // clock_t startT = clock();
592
593 // disabling the index while doing this complex updates is about
594 // 2 to 10 times faster!
595 //setItemIndexMethod(QGraphicsScene::NoIndex);
596
597 if (end >= 0) {
598 int row = end;
599 qreal linePos = _lines.at(row)->scenePos().y() + _lines.at(row)->height();
600 qreal contentsWidth = width - secondColumnHandle()->sceneRight();
601 while (row >= start) {
602 _lines.at(row--)->setGeometryByWidth(width, contentsWidth, linePos);
603 }
604
605 if (row >= 0) {
606 // remaining items don't need geometry changes, but maybe repositioning?
607 ChatLine *line = _lines.at(row);
608 qreal offset = linePos - (line->scenePos().y() + line->height());
609 if (offset != 0) {
610 while (row >= 0) {
611 line = _lines.at(row--);
612 line->setPos(0, line->scenePos().y() + offset);
613 }
614 }
615 }
616 }
617
618 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
619
620 updateSceneRect(width);
621 setHandleXLimits();
622 setMarkerLine();
623 emit layoutChanged();
624
625// clock_t endT = clock();
626// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
627}
628
629
630void ChatScene::firstHandlePositionChanged(qreal xpos)
631{
632 if (_firstColHandlePos == xpos)
633 return;
634
635 _firstColHandlePos = xpos >= 0 ? xpos : 0;
636 ChatViewSettings viewSettings(this);
637 viewSettings.setValue("FirstColumnHandlePos", _firstColHandlePos);
638 ChatViewSettings defaultSettings;
639 defaultSettings.setValue("FirstColumnHandlePos", _firstColHandlePos);
640
641 // clock_t startT = clock();
642
643 // disabling the index while doing this complex updates is about
644 // 2 to 10 times faster!
645 //setItemIndexMethod(QGraphicsScene::NoIndex);
646
647 QList<ChatLine *>::iterator lineIter = _lines.end();
648 QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
649 qreal timestampWidth = firstColumnHandle()->sceneLeft();
650 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
651 QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
652
653 while (lineIter != lineIterBegin) {
654 lineIter--;
655 (*lineIter)->setFirstColumn(timestampWidth, senderWidth, senderPos);
656 }
657 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
658
659 setHandleXLimits();
660
661// clock_t endT = clock();
662// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
663}
664
665
666void ChatScene::secondHandlePositionChanged(qreal xpos)
667{
668 if (_secondColHandlePos == xpos)
669 return;
670
671 _secondColHandlePos = xpos;
672 ChatViewSettings viewSettings(this);
673 viewSettings.setValue("SecondColumnHandlePos", _secondColHandlePos);
674 ChatViewSettings defaultSettings;
675 defaultSettings.setValue("SecondColumnHandlePos", _secondColHandlePos);
676
677 // clock_t startT = clock();
678
679 // disabling the index while doing this complex updates is about
680 // 2 to 10 times faster!
681 //setItemIndexMethod(QGraphicsScene::NoIndex);
682
683 QList<ChatLine *>::iterator lineIter = _lines.end();
684 QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
685 qreal linePos = _sceneRect.y() + _sceneRect.height();
686 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
687 qreal contentsWidth = _sceneRect.width() - secondColumnHandle()->sceneRight();
688 QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
689 while (lineIter != lineIterBegin) {
690 lineIter--;
691 (*lineIter)->setSecondColumn(senderWidth, contentsWidth, contentsPos, linePos);
692 }
693 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
694
695 updateSceneRect();
696 setHandleXLimits();
697 emit layoutChanged();
698
699// clock_t endT = clock();
700// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
701}
702
703
704void ChatScene::setHandleXLimits()
705{
706 _firstColHandle->setXLimits(0, _secondColHandle->sceneLeft());
707 _secondColHandle->setXLimits(_firstColHandle->sceneRight(), width() - minContentsWidth);
708 update();
709}
710
711
712void ChatScene::setSelectingItem(ChatItem *item)
713{
714 if (_selectingItem) _selectingItem->clearSelection();
715 _selectingItem = item;
716}
717
718
719void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos)
720{
721 _selectionStart = _selectionEnd = _firstSelectionRow = item->row();
722 _selectionStartCol = _selectionMinCol = item->column();
723 _isSelecting = true;
724 _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
725 updateSelection(item->mapToScene(itemPos));
726}
727
728
729void ChatScene::updateSelection(const QPointF &pos)
730{
731 int curRow = rowByScenePos(pos);
732 if (curRow < 0) return;
733 int curColumn = (int)columnByScenePos(pos);
734 ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol);
735 if (minColumn != _selectionMinCol) {
736 _selectionMinCol = minColumn;
737 for (int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
738 _lines[l]->setSelected(true, minColumn);
739 }
740 }
741 int newstart = qMin(curRow, _firstSelectionRow);
742 int newend = qMax(curRow, _firstSelectionRow);
743 if (newstart < _selectionStart) {
744 for (int l = newstart; l < _selectionStart; l++)
745 _lines[l]->setSelected(true, minColumn);
746 }
747 if (newstart > _selectionStart) {
748 for (int l = _selectionStart; l < newstart; l++)
749 _lines[l]->setSelected(false);
750 }
751 if (newend > _selectionEnd) {
752 for (int l = _selectionEnd+1; l <= newend; l++)
753 _lines[l]->setSelected(true, minColumn);
754 }
755 if (newend < _selectionEnd) {
756 for (int l = newend+1; l <= _selectionEnd; l++)
757 _lines[l]->setSelected(false);
758 }
759
760 _selectionStart = newstart;
761 _selectionEnd = newend;
762
763 if (newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
764 if (!_selectingItem) {
765 // _selectingItem has been removed already
766 return;
767 }
768 _lines[curRow]->setSelected(false);
769 _isSelecting = false;
770 _selectionStart = -1;
771 _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
772 }
773}
774
775
776bool ChatScene::isPosOverSelection(const QPointF &pos) const
777{
778 ChatItem *chatItem = chatItemAt(pos);
779 if (!chatItem)
780 return false;
781 if (hasGlobalSelection()) {
782 int row = chatItem->row();
783 if (row >= qMin(_selectionStart, _selectionEnd) && row <= qMax(_selectionStart, _selectionEnd))
784 return columnByScenePos(pos) >= _selectionMinCol;
785 }
786 else {
787 return chatItem->isPosOverSelection(chatItem->mapFromScene(pos));
788 }
789 return false;
790}
791
792
793bool ChatScene::isScrollingAllowed() const
794{
795 if (_isSelecting)
796 return false;
797
798 // TODO: Handle clicks and single-item selections too
799
800 return true;
801}
802
803
804/******** MOUSE HANDLING **************************************************************************/
805
806void ChatScene::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
807{
808 QPointF pos = event->scenePos();
809 QMenu menu;
810
811 // zoom actions and similar
812 chatView()->addActionsToMenu(&menu, pos);
813 menu.addSeparator();
814
815 // item-specific options (select link etc)
816 ChatItem *item = chatItemAt(pos);
817 if (item)
818 item->addActionsToMenu(&menu, item->mapFromScene(pos));
819 else
820 // no item -> default scene actions
821 GraphicalUi::contextMenuActionProvider()->addActions(&menu, filter(), BufferId());
822
823 // If we have text selected, insert the Copy Selection as first item
824 if (isPosOverSelection(pos)) {
825 QAction *sep = menu.insertSeparator(menu.actions().first());
826 QAction *act = new Action(SmallIcon("edit-copy"), tr("Copy Selection"), &menu, this,
827 SLOT(selectionToClipboard()), QKeySequence::Copy);
828 menu.insertAction(sep, act);
829
830 QString searchSelectionText = selection();
831 if (searchSelectionText.length() > _webSearchSelectionTextMaxVisible)
832 searchSelectionText = searchSelectionText.left(_webSearchSelectionTextMaxVisible).append(QString::fromUtf8("…"));
833 searchSelectionText = tr("Search '%1'").arg(searchSelectionText);
834
835 menu.addAction(SmallIcon("edit-find"), searchSelectionText, this, SLOT(webSearchOnSelection()));
836 }
837
838 if (QtUi::mainWindow()->menuBar()->isHidden())
839 menu.addAction(QtUi::actionCollection("General")->action("ToggleMenuBar"));
840
841 // show column reset action if columns have been resized in this session or there is at least one very narrow column
842 if ((_firstColHandlePos != _defaultFirstColHandlePos) || (_secondColHandlePos != _defaultSecondColHandlePos) ||
843 (_firstColHandlePos <= 10) || (_secondColHandlePos - _firstColHandlePos <= 10))
844 menu.addAction(new Action(tr("Reset Column Widths"), &menu, this, SLOT(resetColumnWidths()), 0));
845
846 menu.exec(event->screenPos());
847}
848
849
850void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
851{
852 if (event->buttons() == Qt::LeftButton) {
853 if (!_clickHandled && (event->scenePos() - _clickPos).toPoint().manhattanLength() >= QApplication::startDragDistance()) {
854 if (_clickTimer.isActive())
855 _clickTimer.stop();
856 if (_clickMode == SingleClick && isPosOverSelection(_clickPos))
857 initiateDrag(event->widget());
858 else {
859 _clickMode = DragStartClick;
860 handleClick(Qt::LeftButton, _clickPos);
861 }
862 _clickMode = NoClick;
863 }
864 if (_isSelecting) {
865 updateSelection(event->scenePos());
866 emit mouseMoveWhileSelecting(event->scenePos());
867 event->accept();
868 }
869 else if (_clickHandled && _clickMode < DoubleClick)
870 QGraphicsScene::mouseMoveEvent(event);
871 }
872 else
873 QGraphicsScene::mouseMoveEvent(event);
874}
875
876
877void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
878{
879 if (event->buttons() == Qt::LeftButton) {
880 _leftButtonPressed = true;
881 _clickHandled = false;
882 if (!isPosOverSelection(event->scenePos())) {
883 // immediately clear selection if clicked outside; otherwise, wait for potential drag
884 clearSelection();
885 }
886 if (_clickMode != NoClick && _clickTimer.isActive()) {
887 switch (_clickMode) {
888 case NoClick:
889 _clickMode = SingleClick; break;
890 case SingleClick:
891 _clickMode = DoubleClick; break;
892 case DoubleClick:
893 _clickMode = TripleClick; break;
894 case TripleClick:
895 _clickMode = DoubleClick; break;
896 case DragStartClick:
897 break;
898 }
899 handleClick(Qt::LeftButton, _clickPos);
900 }
901 else {
902 _clickMode = SingleClick;
903 _clickPos = event->scenePos();
904 }
905 _clickTimer.start();
906 }
907 if (event->type() == QEvent::GraphicsSceneMouseDoubleClick)
908 QGraphicsScene::mouseDoubleClickEvent(event);
909 else
910 QGraphicsScene::mousePressEvent(event);
911}
912
913
914void ChatScene::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
915{
916 // we check for doubleclick ourselves, so just call press handler
917 mousePressEvent(event);
918}
919
920
921void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
922{
923 if (event->button() == Qt::LeftButton && _leftButtonPressed) {
924 _leftButtonPressed = false;
925 if (_clickMode != NoClick) {
926 if (_clickMode == SingleClick)
927 clearSelection();
928 event->accept();
929 if (!_clickTimer.isActive())
930 handleClick(Qt::LeftButton, _clickPos);
931 }
932 else {
933 // no click -> drag or selection move
934 if (isGloballySelecting()) {
935 selectionToClipboard(QClipboard::Selection);
936 _isSelecting = false;
937 event->accept();
938 return;
939 }
940 }
941 }
942 QGraphicsScene::mouseReleaseEvent(event);
943}
944
945
946void ChatScene::clickTimeout()
947{
948 if (!_leftButtonPressed && _clickMode == SingleClick)
949 handleClick(Qt::LeftButton, _clickPos);
950}
951
952
953void ChatScene::handleClick(Qt::MouseButton button, const QPointF &scenePos)
954{
955 if (button == Qt::LeftButton) {
956 clearSelection();
957
958 // Now send click down to items
959 ChatItem *chatItem = chatItemAt(scenePos);
960 if (chatItem) {
961 chatItem->handleClick(chatItem->mapFromScene(scenePos), _clickMode);
962 }
963 _clickHandled = true;
964 }
965}
966
967
968void ChatScene::initiateDrag(QWidget *source)
969{
970 QDrag *drag = new QDrag(source);
971 QMimeData *mimeData = new QMimeData;
972 mimeData->setText(selection());
973 drag->setMimeData(mimeData);
974
975 drag->exec(Qt::CopyAction);
976}
977
978
979/******** SELECTIONS ******************************************************************************/
980
981void ChatScene::selectionToClipboard(QClipboard::Mode mode)
982{
983 if (!hasSelection())
984 return;
985
986 stringToClipboard(selection(), mode);
987}
988
989
990void ChatScene::stringToClipboard(const QString &str_, QClipboard::Mode mode)
991{
992 QString str = str_;
993 // remove trailing linefeeds
994 if (str.endsWith('\n'))
995 str.chop(1);
996
997 switch (mode) {
998 case QClipboard::Clipboard:
999 QApplication::clipboard()->setText(str);
1000 break;
1001 case QClipboard::Selection:
1002 if (QApplication::clipboard()->supportsSelection())
1003 QApplication::clipboard()->setText(str, QClipboard::Selection);
1004 break;
1005 default:
1006 break;
1007 };
1008}
1009
1010
1011//!\brief Convert current selection to human-readable string.
1012QString ChatScene::selection() const
1013{
1014 //TODO Make selection format configurable!
1015 if (hasGlobalSelection()) {
1016 int start = qMin(_selectionStart, _selectionEnd);
1017 int end = qMax(_selectionStart, _selectionEnd);
1018 if (start < 0 || end >= _lines.count()) {
1019 qDebug() << "Invalid selection range:" << start << end;
1020 return QString();
1021 }
1022 QString result;
1023 for (int l = start; l <= end; l++) {
1024 if (_selectionMinCol == ChatLineModel::TimestampColumn)
1025 result += _lines[l]->item(ChatLineModel::TimestampColumn)->data(MessageModel::DisplayRole).toString() + " ";
1026 if (_selectionMinCol <= ChatLineModel::SenderColumn)
1027 result += _lines[l]->item(ChatLineModel::SenderColumn)->data(MessageModel::DisplayRole).toString() + " ";
1028 result += _lines[l]->item(ChatLineModel::ContentsColumn)->data(MessageModel::DisplayRole).toString() + "\n";
1029 }
1030 return result;
1031 }
1032 else if (selectingItem())
1033 return selectingItem()->selection();
1034 return QString();
1035}
1036
1037
1038bool ChatScene::hasSelection() const
1039{
1040 return hasGlobalSelection() || (selectingItem() && selectingItem()->hasSelection());
1041}
1042
1043
1044bool ChatScene::hasGlobalSelection() const
1045{
1046 return _selectionStart >= 0;
1047}
1048
1049
1050bool ChatScene::isGloballySelecting() const
1051{
1052 return _isSelecting;
1053}
1054
1055
1056void ChatScene::clearGlobalSelection()
1057{
1058 if (hasGlobalSelection()) {
1059 for (int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++)
1060 _lines[l]->setSelected(false);
1061 _isSelecting = false;
1062 _selectionStart = -1;
1063 }
1064}
1065
1066
1067void ChatScene::clearSelection()
1068{
1069 clearGlobalSelection();
1070 if (selectingItem())
1071 selectingItem()->clearSelection();
1072}
1073
1074
1075/******** *************************************************************************************/
1076
1077void ChatScene::webSearchOnSelection()
1078{
1079 if (!hasSelection())
1080 return;
1081
1082 ChatViewSettings settings;
1083 QString webSearchBaseUrl = settings.webSearchUrlFormatString();
1084 QString webSearchUrl = webSearchBaseUrl.replace(QString("%s"), selection());
1085 QUrl url = QUrl::fromUserInput(webSearchUrl);
1086 QDesktopServices::openUrl(url);
1087}
1088
1089
1090/******** *************************************************************************************/
1091
1092void ChatScene::requestBacklog()
1093{
1094 MessageFilter *filter = qobject_cast<MessageFilter *>(model());
1095 if (filter)
1096 return filter->requestBacklog();
1097 return;
1098}
1099
1100
1101ChatLineModel::ColumnType ChatScene::columnByScenePos(qreal x) const
1102{
1103 if (x < _firstColHandle->x())
1104 return ChatLineModel::TimestampColumn;
1105 if (x < _secondColHandle->x())
1106 return ChatLineModel::SenderColumn;
1107
1108 return ChatLineModel::ContentsColumn;
1109}
1110
1111
1112int ChatScene::rowByScenePos(qreal y) const
1113{
1114 QList<QGraphicsItem *> itemList = items(QPointF(0, y));
1115
1116 // ChatLine should be at the bottom of the list
1117 for (int i = itemList.count()-1; i >= 0; i--) {
1118 ChatLine *line = qgraphicsitem_cast<ChatLine *>(itemList.at(i));
1119 if (line)
1120 return line->row();
1121 }
1122 return -1;
1123}
1124
1125
1126void ChatScene::updateSceneRect(qreal width)
1127{
1128 if (_lines.isEmpty()) {
1129 updateSceneRect(QRectF(0, 0, width, 0));
1130 return;
1131 }
1132
1133 // we hide day change messages at the top by making the scene rect smaller
1134 // and by calling QGraphicsItem::hide() on all leading day change messages
1135 // the first one is needed to ensure proper scrollbar ranges
1136 // the second for cases where the viewport is larger then the set scenerect
1137 // (in this case the items are shown anyways)
1138 if (_firstLineRow == -1) {
1139 int numRows = model()->rowCount();
1140 _firstLineRow = 0;
1141 QModelIndex firstLineIdx;
1142 while (_firstLineRow < numRows) {
1143 firstLineIdx = model()->index(_firstLineRow, 0);
1144 if ((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)
1145 break;
1146 _lines.at(_firstLineRow)->hide();
1147 _firstLineRow++;
1148 }
1149 }
1150
1151 // the following call should be safe. If it crashes something went wrong during insert/remove
1152 if (_firstLineRow < _lines.count()) {
1153 ChatLine *firstLine = _lines.at(_firstLineRow);
1154 ChatLine *lastLine = _lines.last();
1155 updateSceneRect(QRectF(0, firstLine->pos().y(), width, lastLine->pos().y() + lastLine->height() - firstLine->pos().y()));
1156 }
1157 else {
1158 // empty scene rect
1159 updateSceneRect(QRectF(0, 0, width, 0));
1160 }
1161}
1162
1163
1164void ChatScene::updateSceneRect(const QRectF &rect)
1165{
1166 _sceneRect = rect;
1167 setSceneRect(rect);
1168 update();
1169}
1170
1171
1172// ========================================
1173// Webkit Only stuff
1174// ========================================
1175#ifdef HAVE_WEBKIT
1176void ChatScene::loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect)
1177{
1178 if (!_showWebPreview)
1179 return;
1180
1181 if (webPreview.urlRect != urlRect)
1182 webPreview.urlRect = urlRect;
1183
1184 if (webPreview.parentItem != parentItem)
1185 webPreview.parentItem = parentItem;
1186
1187 if (webPreview.url != url) {
1188 webPreview.url = url;
1189 // prepare to load a different URL
1190 if (webPreview.previewItem) {
1191 if (webPreview.previewItem->scene())
1192 removeItem(webPreview.previewItem);
1193 delete webPreview.previewItem;
1194 webPreview.previewItem = 0;
1195 }
1196 webPreview.previewState = WebPreview::NoPreview;
1197 }
1198
1199 if (webPreview.url.isEmpty())
1200 return;
1201
1202 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1203 switch (webPreview.previewState) {
1204 case WebPreview::NoPreview:
1205 webPreview.previewState = WebPreview::NewPreview;
1206 webPreview.timer.start(500);
1207 break;
1208 case WebPreview::NewPreview:
1209 case WebPreview::DelayPreview:
1210 case WebPreview::ShowPreview:
1211 // we're already waiting for the next step or showing the preview
1212 break;
1213 case WebPreview::HidePreview:
1214 // we still have a valid preview
1215 webPreview.previewState = WebPreview::DelayPreview;
1216 webPreview.timer.start(1000);
1217 break;
1218 }
1219 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1220}
1221
1222
1223void ChatScene::webPreviewNextStep()
1224{
1225 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1226 switch (webPreview.previewState) {
1227 case WebPreview::NoPreview:
1228 break;
1229 case WebPreview::NewPreview:
1230 Q_ASSERT(!webPreview.previewItem);
1231 webPreview.previewItem = new WebPreviewItem(webPreview.url);
1232 webPreview.previewState = WebPreview::DelayPreview;
1233 webPreview.timer.start(1000);
1234 break;
1235 case WebPreview::DelayPreview:
1236 Q_ASSERT(webPreview.previewItem);
1237 // calc position and show
1238 {
1239 qreal previewY = webPreview.urlRect.bottom();
1240 qreal previewX = webPreview.urlRect.x();
1241 if (previewY + webPreview.previewItem->boundingRect().height() > sceneRect().bottom())
1242 previewY = webPreview.urlRect.y() - webPreview.previewItem->boundingRect().height();
1243
1244 if (previewX + webPreview.previewItem->boundingRect().width() > sceneRect().width())
1245 previewX = sceneRect().right() - webPreview.previewItem->boundingRect().width();
1246
1247 webPreview.previewItem->setPos(previewX, previewY);
1248 }
1249 addItem(webPreview.previewItem);
1250 webPreview.previewState = WebPreview::ShowPreview;
1251 break;
1252 case WebPreview::ShowPreview:
1253 qWarning() << "ChatScene::webPreviewNextStep() called while in ShowPreview Step!";
1254 qWarning() << "removing preview";
1255 if (webPreview.previewItem && webPreview.previewItem->scene())
1256 removeItem(webPreview.previewItem);
1257 // Fall through to deletion!
1258 case WebPreview::HidePreview:
1259 if (webPreview.previewItem) {
1260 delete webPreview.previewItem;
1261 webPreview.previewItem = 0;
1262 }
1263 webPreview.parentItem = 0;
1264 webPreview.url = QUrl();
1265 webPreview.urlRect = QRectF();
1266 webPreview.previewState = WebPreview::NoPreview;
1267 }
1268 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1269}
1270
1271
1272void ChatScene::clearWebPreview(ChatItem *parentItem)
1273{
1274 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1275 switch (webPreview.previewState) {
1276 case WebPreview::NewPreview:
1277 webPreview.previewState = WebPreview::NoPreview; // we haven't loaded anything yet
1278 break;
1279 case WebPreview::ShowPreview:
1280 if (parentItem == 0 || webPreview.parentItem == parentItem) {
1281 if (webPreview.previewItem && webPreview.previewItem->scene())
1282 removeItem(webPreview.previewItem);
1283 }
1284 // fall through into to set hidden state
1285 case WebPreview::DelayPreview:
1286 // we're just loading, so haven't shown the preview yet.
1287 webPreview.previewState = WebPreview::HidePreview;
1288 webPreview.timer.start(5000);
1289 break;
1290 case WebPreview::NoPreview:
1291 case WebPreview::HidePreview:
1292 break;
1293 }
1294 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1295}
1296
1297
1298#endif
1299
1300// ========================================
1301// end of webkit only
1302// ========================================
1303
1304void ChatScene::showWebPreviewChanged()
1305{
1306 ChatViewSettings settings;
1307 _showWebPreview = settings.showWebPreview();
1308}
1309