1 /***************************************************************************
2 * Copyright (C) 2005-2018 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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #include <QGraphicsTextItem>
26 #include "bufferwidget.h"
27 #include "chatscene.h"
30 #include "messagefilter.h"
32 #include "qtuistyle.h"
33 #include "clientignorelistmanager.h"
37 ChatView::ChatView(BufferId bufferId, QWidget *parent)
38 : QGraphicsView(parent),
41 QList<BufferId> filterList;
42 filterList.append(bufferId);
43 MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
48 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
49 : QGraphicsView(parent),
56 void ChatView::init(MessageFilter *filter)
59 _currentScaleFactor = 1;
60 _invalidateFilter = false;
62 setAttribute(Qt::WA_AcceptTouchEvents);
63 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
64 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
65 setAlignment(Qt::AlignLeft|Qt::AlignBottom);
67 //setOptimizationFlags(QGraphicsView::DontClipPainter | QGraphicsView::DontAdjustForAntialiasing);
68 // setOptimizationFlags(QGraphicsView::DontAdjustForAntialiasing);
69 setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
70 // setTransformationAnchor(QGraphicsView::NoAnchor);
71 setTransformationAnchor(QGraphicsView::AnchorViewCenter);
73 _scrollTimer.setInterval(100);
74 _scrollTimer.setSingleShot(true);
75 connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
77 _scene = new ChatScene(filter, filter->idString(), viewport()->width(), this);
78 connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(adjustSceneRect()));
79 connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
80 connect(_scene, SIGNAL(mouseMoveWhileSelecting(const QPointF &)), this, SLOT(mouseMoveWhileSelecting(const QPointF &)));
83 connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
84 _lastScrollbarPos = verticalScrollBar()->maximum();
86 connect(Client::networkModel(), SIGNAL(markerLineSet(BufferId, MsgId)), SLOT(markerLineSet(BufferId, MsgId)));
88 // only connect if client is synched with a core
89 if (Client::isConnected())
90 connect(Client::ignoreListManager(), SIGNAL(ignoreListChanged()), this, SLOT(invalidateFilter()));
94 bool ChatView::event(QEvent *event)
96 if (event->type() == QEvent::KeyPress) {
97 QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
98 switch (keyEvent->key()) {
102 case Qt::Key_PageDown:
103 if (!verticalScrollBar()->isVisible()) {
104 scene()->requestBacklog();
112 #if QT_VERSION >= 0x050000
113 if (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->device()->type()==QTouchDevice::TouchScreen) {
115 if (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->deviceType()==QTouchEvent::TouchScreen) {
117 // Enable scrolling by draging, disable selecting/clicking content
118 setDragMode(QGraphicsView::ScrollHandDrag);
119 setInteractive(false);
120 // if scrollbar is not visible we need to request backlog below else we need to accept
121 // the event now (return true) so that we will receive TouchUpdate and TouchEnd/TouchCancel
122 if (verticalScrollBar()->isVisible()) return true;
125 #if QT_VERSION >= 0x050000
126 if (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
128 if (event->type() == QEvent::TouchEnd) {
130 // End scroll and reset settings to default
131 setDragMode(QGraphicsView::NoDrag);
132 setInteractive(true);
133 _firstTouchUpdateHappened = false;
137 if (event->type() == QEvent::TouchUpdate) {
138 if (!_firstTouchUpdateHappened) {
139 // After the first movement of a Touch-Point, calculate the distance in both axis
140 // and if the point moved more horizontally abort scroll.
141 QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
142 double dx = qAbs(p.lastPos().x() - p.pos().x());
143 double dy = qAbs(p.lastPos().y() - p.pos().y());
145 setDragMode(QGraphicsView::NoDrag);
146 setInteractive(true);
148 _firstTouchUpdateHappened = true;
150 // Applying the movement happens automatically by the drag-mode
152 #if QT_VERSION >= 0x050000
153 if (event->type() == QEvent::Wheel || (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->device()->type()==QTouchDevice::TouchScreen) || event->type() == QEvent::TouchUpdate) {
155 if (event->type() == QEvent::Wheel || (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->deviceType()==QTouchEvent::TouchScreen) || event->type() == QEvent::TouchUpdate) {
157 if (!verticalScrollBar()->isVisible()) {
158 scene()->requestBacklog();
163 if (event->type() == QEvent::Show) {
164 if (_invalidateFilter)
168 return QGraphicsView::event(event);
172 void ChatView::resizeEvent(QResizeEvent *event)
174 // if view is currently scrolled to bottom, we want it that way after resizing
175 bool atBottom = (_lastScrollbarPos == verticalScrollBar()->maximum());
177 QGraphicsView::resizeEvent(event);
179 // if scrolling to bottom, do it immediately.
182 // we can reduce viewport updates if we scroll to the bottom allready at the beginning
183 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
186 scene()->updateForViewport(viewport()->width(), viewport()->height());
191 _lastScrollbarPos = verticalScrollBar()->maximum();
192 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
194 checkChatLineCaches();
198 void ChatView::adjustSceneRect()
200 // Workaround for QTBUG-6322
201 // If the viewport's sceneRect() is (almost) as wide as as the viewport itself,
202 // Qt wants to reserve space for scrollbars even if they're turned off, resulting in
203 // an ugly white space at the bottom of the ChatView.
204 // Since the view's scene's width actually doesn't matter at all, we just adjust it
205 // by some hopefully large enough value to avoid this problem.
207 setSceneRect(scene()->sceneRect().adjusted(0, 0, -25, 0));
211 void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos)
213 int y = (int)mapFromScene(scenePos).y();
217 else if (y > height())
218 _scrollOffset = y - height();
220 if (_scrollOffset && !_scrollTimer.isActive())
221 _scrollTimer.start();
225 void ChatView::scrollTimerTimeout()
228 QAbstractSlider *vbar = verticalScrollBar();
229 if (_scrollOffset < 0 && vbar->value() > 0)
230 vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
231 else if (_scrollOffset > 0 && vbar->value() < vbar->maximum())
232 vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
236 void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset)
239 // disabled until further testing/discussion
240 //if(!scene()->isScrollingAllowed())
243 QAbstractSlider *vbar = verticalScrollBar();
245 if (vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor) { // 5px grace area
246 vbar->setValue(vbar->maximum());
251 void ChatView::verticalScrollbarChanged(int newPos)
253 QAbstractSlider *vbar = verticalScrollBar();
256 // check for backlog request
257 if (newPos < _lastScrollbarPos) {
258 int relativePos = 100;
259 if (vbar->maximum() - vbar->minimum() != 0)
260 relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
262 if (relativePos < 20) {
263 scene()->requestBacklog();
266 _lastScrollbarPos = newPos;
268 // FIXME: Fugly workaround for the ChatView scrolling up 1px on buffer switch
269 if (vbar->maximum() - newPos <= 2)
270 vbar->setValue(vbar->maximum());
274 MsgId ChatView::lastMsgId() const
279 QAbstractItemModel *model = scene()->model();
280 if (!model || model->rowCount() == 0)
283 return model->index(model->rowCount() - 1, 0).data(MessageModel::MsgIdRole).value<MsgId>();
287 MsgId ChatView::lastVisibleMsgId() const
289 ChatLine *line = lastVisibleChatLine();
292 return line->msgId();
298 bool chatLinePtrLessThan(ChatLine *one, ChatLine *other)
300 return one->row() < other->row();
304 // TODO: figure out if it's cheaper to use a cached list (that we'd need to keep updated)
305 QSet<ChatLine *> ChatView::visibleChatLines(Qt::ItemSelectionMode mode) const
307 QSet<ChatLine *> result;
308 foreach(QGraphicsItem *item, items(viewport()->rect().adjusted(-1, -1, 1, 1), mode)) {
309 ChatLine *line = qgraphicsitem_cast<ChatLine *>(item);
317 QList<ChatLine *> ChatView::visibleChatLinesSorted(Qt::ItemSelectionMode mode) const
319 QList<ChatLine *> result = visibleChatLines(mode).toList();
320 qSort(result.begin(), result.end(), chatLinePtrLessThan);
325 ChatLine *ChatView::lastVisibleChatLine(bool ignoreDayChange) const
330 QAbstractItemModel *model = scene()->model();
331 if (!model || model->rowCount() == 0)
336 QSet<ChatLine *> visibleLines = visibleChatLines(Qt::ContainsItemBoundingRect);
337 foreach(ChatLine *line, visibleLines) {
338 if (line->row() > row && (ignoreDayChange ? line->msgType() != Message::DayChange : true))
343 return scene()->chatLine(row);
349 void ChatView::setMarkerLineVisible(bool visible)
351 scene()->setMarkerLineVisible(visible);
355 void ChatView::setMarkerLine(MsgId msgId)
357 if (!scene()->isSingleBufferScene())
360 BufferId bufId = scene()->singleBufferId();
361 Client::setMarkerLine(bufId, msgId);
365 void ChatView::markerLineSet(BufferId buffer, MsgId msgId)
367 if (!scene()->isSingleBufferScene() || scene()->singleBufferId() != buffer)
370 scene()->setMarkerLine(msgId);
371 scene()->setMarkerLineVisible(true);
375 void ChatView::jumpToMarkerLine(bool requestBacklog)
377 scene()->jumpToMarkerLine(requestBacklog);
381 void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos)
384 BufferWidget *bw = qobject_cast<BufferWidget *>(bufferContainer());
386 bw->addActionsToMenu(menu, pos);
387 menu->addSeparator();
392 void ChatView::zoomIn()
394 _currentScaleFactor *= 1.2;
396 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
400 void ChatView::zoomOut()
402 _currentScaleFactor /= 1.2;
403 scale(1 / 1.2, 1 / 1.2);
404 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
408 void ChatView::zoomOriginal()
410 scale(1/_currentScaleFactor, 1/_currentScaleFactor);
411 _currentScaleFactor = 1;
412 scene()->setWidth(viewport()->width() - 2);
416 void ChatView::invalidateFilter()
418 // if this is the currently selected chatview
419 // invalidate immediately
421 _scene->filter()->invalidateFilter();
422 _invalidateFilter = false;
424 // otherwise invalidate whenever the view is shown
426 _invalidateFilter = true;
431 void ChatView::scrollContentsBy(int dx, int dy)
433 QGraphicsView::scrollContentsBy(dx, dy);
434 checkChatLineCaches();
438 void ChatView::setHasCache(ChatLine *line, bool hasCache)
441 _linesWithCache.insert(line);
443 _linesWithCache.remove(line);
447 void ChatView::checkChatLineCaches()
449 qreal top = mapToScene(viewport()->rect().topLeft()).y() - 10; // some grace area to avoid premature cleaning
450 qreal bottom = mapToScene(viewport()->rect().bottomRight()).y() + 10;
451 QSet<ChatLine *>::iterator iter = _linesWithCache.begin();
452 while (iter != _linesWithCache.end()) {
453 ChatLine *line = *iter;
454 if (line->pos().y() + line->height() < top || line->pos().y() > bottom) {
456 iter = _linesWithCache.erase(iter);