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 auto *filter = new MessageFilter(Client::messageModel(), filterList, this);
48 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
49 : QGraphicsView(parent),
56 void ChatView::init(MessageFilter *filter)
58 _bufferContainer = nullptr;
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, &QTimer::timeout, this, &ChatView::scrollTimerTimeout);
77 _scene = new ChatScene(filter, filter->idString(), viewport()->width(), this);
78 connect(_scene, &QGraphicsScene::sceneRectChanged, this, &ChatView::adjustSceneRect);
79 connect(_scene, &ChatScene::lastLineChanged, this, &ChatView::lastLineChanged);
80 connect(_scene, &ChatScene::mouseMoveWhileSelecting, this, &ChatView::mouseMoveWhileSelecting);
83 connect(verticalScrollBar(), &QAbstractSlider::valueChanged, this, &ChatView::verticalScrollbarChanged);
84 _lastScrollbarPos = verticalScrollBar()->maximum();
86 connect(Client::networkModel(), &NetworkModel::markerLineSet, this, &ChatView::markerLineSet);
88 // only connect if client is synched with a core
89 if (Client::isConnected())
90 connect(Client::ignoreListManager(), &ClientIgnoreListManager::ignoreListChanged, this, &ChatView::invalidateFilter);
94 bool ChatView::event(QEvent *event)
96 if (event->type() == QEvent::KeyPress) {
97 auto *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 && ((QTouchEvent*)event)->device()->type() == QTouchDevice::TouchScreen) {
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 (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
122 // End scroll and reset settings to default
123 setDragMode(QGraphicsView::NoDrag);
124 setInteractive(true);
125 _firstTouchUpdateHappened = false;
129 if (event->type() == QEvent::TouchUpdate) {
130 if (!_firstTouchUpdateHappened) {
131 // After the first movement of a Touch-Point, calculate the distance in both axis
132 // and if the point moved more horizontally abort scroll.
133 QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
134 double dx = qAbs(p.lastPos().x() - p.pos().x());
135 double dy = qAbs(p.lastPos().y() - p.pos().y());
137 setDragMode(QGraphicsView::NoDrag);
138 setInteractive(true);
140 _firstTouchUpdateHappened = true;
142 // Applying the movement happens automatically by the drag-mode
144 if (event->type() == QEvent::Wheel || (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->device()->type() == QTouchDevice::TouchScreen) || event->type() == QEvent::TouchUpdate) {
145 if (!verticalScrollBar()->isVisible()) {
146 scene()->requestBacklog();
151 if (event->type() == QEvent::Show) {
152 if (_invalidateFilter)
156 return QGraphicsView::event(event);
160 void ChatView::resizeEvent(QResizeEvent *event)
162 // if view is currently scrolled to bottom, we want it that way after resizing
163 bool atBottom = (_lastScrollbarPos == verticalScrollBar()->maximum());
165 QGraphicsView::resizeEvent(event);
167 // if scrolling to bottom, do it immediately.
170 // we can reduce viewport updates if we scroll to the bottom allready at the beginning
171 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
174 scene()->updateForViewport(viewport()->width(), viewport()->height());
179 _lastScrollbarPos = verticalScrollBar()->maximum();
180 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
182 checkChatLineCaches();
186 void ChatView::adjustSceneRect()
188 // Workaround for QTBUG-6322
189 // If the viewport's sceneRect() is (almost) as wide as as the viewport itself,
190 // Qt wants to reserve space for scrollbars even if they're turned off, resulting in
191 // an ugly white space at the bottom of the ChatView.
192 // Since the view's scene's width actually doesn't matter at all, we just adjust it
193 // by some hopefully large enough value to avoid this problem.
195 setSceneRect(scene()->sceneRect().adjusted(0, 0, -25, 0));
199 void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos)
201 int y = (int)mapFromScene(scenePos).y();
205 else if (y > height())
206 _scrollOffset = y - height();
208 if (_scrollOffset && !_scrollTimer.isActive())
209 _scrollTimer.start();
213 void ChatView::scrollTimerTimeout()
216 QAbstractSlider *vbar = verticalScrollBar();
217 if (_scrollOffset < 0 && vbar->value() > 0)
218 vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
219 else if (_scrollOffset > 0 && vbar->value() < vbar->maximum())
220 vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
224 void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset)
227 // disabled until further testing/discussion
228 //if(!scene()->isScrollingAllowed())
231 QAbstractSlider *vbar = verticalScrollBar();
233 if (vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor) { // 5px grace area
234 vbar->setValue(vbar->maximum());
239 void ChatView::verticalScrollbarChanged(int newPos)
241 QAbstractSlider *vbar = verticalScrollBar();
244 // check for backlog request
245 if (newPos < _lastScrollbarPos) {
246 int relativePos = 100;
247 if (vbar->maximum() - vbar->minimum() != 0)
248 relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
250 if (relativePos < 20) {
251 scene()->requestBacklog();
254 _lastScrollbarPos = newPos;
256 // FIXME: Fugly workaround for the ChatView scrolling up 1px on buffer switch
257 if (vbar->maximum() - newPos <= 2)
258 vbar->setValue(vbar->maximum());
262 MsgId ChatView::lastMsgId() const
267 QAbstractItemModel *model = scene()->model();
268 if (!model || model->rowCount() == 0)
271 return model->index(model->rowCount() - 1, 0).data(MessageModel::MsgIdRole).value<MsgId>();
275 MsgId ChatView::lastVisibleMsgId() const
277 ChatLine *line = lastVisibleChatLine();
280 return line->msgId();
286 bool chatLinePtrLessThan(ChatLine *one, ChatLine *other)
288 return one->row() < other->row();
292 // TODO: figure out if it's cheaper to use a cached list (that we'd need to keep updated)
293 QSet<ChatLine *> ChatView::visibleChatLines(Qt::ItemSelectionMode mode) const
295 QSet<ChatLine *> result;
296 foreach(QGraphicsItem *item, items(viewport()->rect().adjusted(-1, -1, 1, 1), mode)) {
297 auto *line = qgraphicsitem_cast<ChatLine *>(item);
305 QList<ChatLine *> ChatView::visibleChatLinesSorted(Qt::ItemSelectionMode mode) const
307 QList<ChatLine *> result = visibleChatLines(mode).toList();
308 qSort(result.begin(), result.end(), chatLinePtrLessThan);
313 ChatLine *ChatView::lastVisibleChatLine(bool ignoreDayChange) const
318 QAbstractItemModel *model = scene()->model();
319 if (!model || model->rowCount() == 0)
324 QSet<ChatLine *> visibleLines = visibleChatLines(Qt::ContainsItemBoundingRect);
325 foreach(ChatLine *line, visibleLines) {
326 if (line->row() > row && (ignoreDayChange ? line->msgType() != Message::DayChange : true))
331 return scene()->chatLine(row);
337 void ChatView::setMarkerLineVisible(bool visible)
339 scene()->setMarkerLineVisible(visible);
343 void ChatView::setMarkerLine(MsgId msgId)
345 if (!scene()->isSingleBufferScene())
348 BufferId bufId = scene()->singleBufferId();
349 Client::setMarkerLine(bufId, msgId);
353 void ChatView::markerLineSet(BufferId buffer, MsgId msgId)
355 if (!scene()->isSingleBufferScene() || scene()->singleBufferId() != buffer)
358 scene()->setMarkerLine(msgId);
359 scene()->setMarkerLineVisible(true);
363 void ChatView::jumpToMarkerLine(bool requestBacklog)
365 scene()->jumpToMarkerLine(requestBacklog);
369 void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos)
372 auto *bw = qobject_cast<BufferWidget *>(bufferContainer());
374 bw->addActionsToMenu(menu, pos);
375 menu->addSeparator();
380 void ChatView::zoomIn()
382 _currentScaleFactor *= 1.2;
384 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
388 void ChatView::zoomOut()
390 _currentScaleFactor /= 1.2;
391 scale(1 / 1.2, 1 / 1.2);
392 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
396 void ChatView::zoomOriginal()
398 scale(1/_currentScaleFactor, 1/_currentScaleFactor);
399 _currentScaleFactor = 1;
400 scene()->setWidth(viewport()->width() - 2);
404 void ChatView::invalidateFilter()
406 // if this is the currently selected chatview
407 // invalidate immediately
409 _scene->filter()->invalidateFilter();
410 _invalidateFilter = false;
412 // otherwise invalidate whenever the view is shown
414 _invalidateFilter = true;
419 void ChatView::scrollContentsBy(int dx, int dy)
421 QGraphicsView::scrollContentsBy(dx, dy);
422 checkChatLineCaches();
426 void ChatView::setHasCache(ChatLine *line, bool hasCache)
429 _linesWithCache.insert(line);
431 _linesWithCache.remove(line);
435 void ChatView::checkChatLineCaches()
437 qreal top = mapToScene(viewport()->rect().topLeft()).y() - 10; // some grace area to avoid premature cleaning
438 qreal bottom = mapToScene(viewport()->rect().bottomRight()).y() + 10;
439 QSet<ChatLine *>::iterator iter = _linesWithCache.begin();
440 while (iter != _linesWithCache.end()) {
441 ChatLine *line = *iter;
442 if (line->pos().y() + line->height() < top || line->pos().y() > bottom) {
444 iter = _linesWithCache.erase(iter);