1 /***************************************************************************
2 * Copyright (C) 2005-2016 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 (event->type() == QEvent::TouchBegin) {
113 // Enable scrolling by draging, disable selecting/clicking content
114 setDragMode(QGraphicsView::ScrollHandDrag);
115 setInteractive(false);
116 // if scrollbar is not visible we need to request backlog below else we need to accept
117 // the event now (return true) so that we will receive TouchUpdate and TouchEnd/TouchCancel
118 if (verticalScrollBar()->isVisible()) return true;
121 #if QT_VERSION >= 0x050000
122 if (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
124 if (event->type() == QEvent::TouchEnd) {
126 // End scroll and reset settings to default
127 setDragMode(QGraphicsView::NoDrag);
128 setInteractive(true);
129 _firstTouchUpdateHappened = false;
133 if (event->type() == QEvent::TouchUpdate) {
134 if (!_firstTouchUpdateHappened) {
135 // After the first movement of a Touch-Point, calculate the distance in both axis
136 // and if the point moved more horizontally abort scroll.
137 QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
138 double dx = qAbs(p.lastPos().x() - p.pos().x());
139 double dy = qAbs(p.lastPos().y() - p.pos().y());
141 setDragMode(QGraphicsView::NoDrag);
142 setInteractive(true);
144 _firstTouchUpdateHappened = true;
146 // Applying the movement happens automatically by the drag-mode
149 if (event->type() == QEvent::Wheel || event->type() == QEvent::TouchBegin || event->type() == QEvent::TouchUpdate) {
150 if (!verticalScrollBar()->isVisible()) {
151 scene()->requestBacklog();
156 if (event->type() == QEvent::Show) {
157 if (_invalidateFilter)
161 return QGraphicsView::event(event);
165 void ChatView::resizeEvent(QResizeEvent *event)
167 // if view is currently scrolled to bottom, we want it that way after resizing
168 bool atBottom = (_lastScrollbarPos == verticalScrollBar()->maximum());
170 QGraphicsView::resizeEvent(event);
172 // if scrolling to bottom, do it immediately.
175 // we can reduce viewport updates if we scroll to the bottom allready at the beginning
176 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
179 scene()->updateForViewport(viewport()->width(), viewport()->height());
184 _lastScrollbarPos = verticalScrollBar()->maximum();
185 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
187 checkChatLineCaches();
191 void ChatView::adjustSceneRect()
193 // Workaround for QTBUG-6322
194 // If the viewport's sceneRect() is (almost) as wide as as the viewport itself,
195 // Qt wants to reserve space for scrollbars even if they're turned off, resulting in
196 // an ugly white space at the bottom of the ChatView.
197 // Since the view's scene's width actually doesn't matter at all, we just adjust it
198 // by some hopefully large enough value to avoid this problem.
200 setSceneRect(scene()->sceneRect().adjusted(0, 0, -25, 0));
204 void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos)
206 int y = (int)mapFromScene(scenePos).y();
210 else if (y > height())
211 _scrollOffset = y - height();
213 if (_scrollOffset && !_scrollTimer.isActive())
214 _scrollTimer.start();
218 void ChatView::scrollTimerTimeout()
221 QAbstractSlider *vbar = verticalScrollBar();
222 if (_scrollOffset < 0 && vbar->value() > 0)
223 vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
224 else if (_scrollOffset > 0 && vbar->value() < vbar->maximum())
225 vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
229 void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset)
232 // disabled until further testing/discussion
233 //if(!scene()->isScrollingAllowed())
236 QAbstractSlider *vbar = verticalScrollBar();
238 if (vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor) { // 5px grace area
239 vbar->setValue(vbar->maximum());
244 void ChatView::verticalScrollbarChanged(int newPos)
246 QAbstractSlider *vbar = verticalScrollBar();
249 // check for backlog request
250 if (newPos < _lastScrollbarPos) {
251 int relativePos = 100;
252 if (vbar->maximum() - vbar->minimum() != 0)
253 relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
255 if (relativePos < 20) {
256 scene()->requestBacklog();
259 _lastScrollbarPos = newPos;
261 // FIXME: Fugly workaround for the ChatView scrolling up 1px on buffer switch
262 if (vbar->maximum() - newPos <= 2)
263 vbar->setValue(vbar->maximum());
267 MsgId ChatView::lastMsgId() const
272 QAbstractItemModel *model = scene()->model();
273 if (!model || model->rowCount() == 0)
276 return model->index(model->rowCount() - 1, 0).data(MessageModel::MsgIdRole).value<MsgId>();
280 MsgId ChatView::lastVisibleMsgId() const
282 ChatLine *line = lastVisibleChatLine();
285 return line->msgId();
291 bool chatLinePtrLessThan(ChatLine *one, ChatLine *other)
293 return one->row() < other->row();
297 // TODO: figure out if it's cheaper to use a cached list (that we'd need to keep updated)
298 QSet<ChatLine *> ChatView::visibleChatLines(Qt::ItemSelectionMode mode) const
300 QSet<ChatLine *> result;
301 foreach(QGraphicsItem *item, items(viewport()->rect().adjusted(-1, -1, 1, 1), mode)) {
302 ChatLine *line = qgraphicsitem_cast<ChatLine *>(item);
310 QList<ChatLine *> ChatView::visibleChatLinesSorted(Qt::ItemSelectionMode mode) const
312 QList<ChatLine *> result = visibleChatLines(mode).toList();
313 qSort(result.begin(), result.end(), chatLinePtrLessThan);
318 ChatLine *ChatView::lastVisibleChatLine(bool ignoreDayChange) const
323 QAbstractItemModel *model = scene()->model();
324 if (!model || model->rowCount() == 0)
329 QSet<ChatLine *> visibleLines = visibleChatLines(Qt::ContainsItemBoundingRect);
330 foreach(ChatLine *line, visibleLines) {
331 if (line->row() > row && (ignoreDayChange ? line->msgType() != Message::DayChange : true))
336 return scene()->chatLine(row);
342 void ChatView::setMarkerLineVisible(bool visible)
344 scene()->setMarkerLineVisible(visible);
348 void ChatView::setMarkerLine(MsgId msgId)
350 if (!scene()->isSingleBufferScene())
353 BufferId bufId = scene()->singleBufferId();
354 Client::setMarkerLine(bufId, msgId);
358 void ChatView::markerLineSet(BufferId buffer, MsgId msgId)
360 if (!scene()->isSingleBufferScene() || scene()->singleBufferId() != buffer)
363 scene()->setMarkerLine(msgId);
364 scene()->setMarkerLineVisible(true);
368 void ChatView::jumpToMarkerLine(bool requestBacklog)
370 scene()->jumpToMarkerLine(requestBacklog);
374 void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos)
377 BufferWidget *bw = qobject_cast<BufferWidget *>(bufferContainer());
379 bw->addActionsToMenu(menu, pos);
380 menu->addSeparator();
385 void ChatView::zoomIn()
387 _currentScaleFactor *= 1.2;
389 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
393 void ChatView::zoomOut()
395 _currentScaleFactor /= 1.2;
396 scale(1 / 1.2, 1 / 1.2);
397 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
401 void ChatView::zoomOriginal()
403 scale(1/_currentScaleFactor, 1/_currentScaleFactor);
404 _currentScaleFactor = 1;
405 scene()->setWidth(viewport()->width() - 2);
409 void ChatView::invalidateFilter()
411 // if this is the currently selected chatview
412 // invalidate immediately
414 _scene->filter()->invalidateFilter();
415 _invalidateFilter = false;
417 // otherwise invalidate whenever the view is shown
419 _invalidateFilter = true;
424 void ChatView::scrollContentsBy(int dx, int dy)
426 QGraphicsView::scrollContentsBy(dx, dy);
427 checkChatLineCaches();
431 void ChatView::setHasCache(ChatLine *line, bool hasCache)
434 _linesWithCache.insert(line);
436 _linesWithCache.remove(line);
440 void ChatView::checkChatLineCaches()
442 qreal top = mapToScene(viewport()->rect().topLeft()).y() - 10; // some grace area to avoid premature cleaning
443 qreal bottom = mapToScene(viewport()->rect().bottomRight()).y() + 10;
444 QSet<ChatLine *>::iterator iter = _linesWithCache.begin();
445 while (iter != _linesWithCache.end()) {
446 ChatLine *line = *iter;
447 if (line->pos().y() + line->height() < top || line->pos().y() > bottom) {
449 iter = _linesWithCache.erase(iter);